Carrier | HXC076-186 | Specifications | Carrier HXC076-186 Specifications

30GXN,R080-528
30HXA,HXC076-271
Air-Cooled and Water-Cooled Chillers with ComfortLink™ Controls
50/60 Hz
Series 6
Controls Start-Up, Operation,
Service, and Troubleshooting
SAFETY CONSIDERATIONS

Installing, starting up, and servicing this equipment can be
hazardous due to system pressures, electrical components, and
equipment location (roof, elevated structures, etc.). Only
trained, qualified installers and service mechanics should
install, start up, and service this equipment.
When working on this equipment, observe precautions in
the literature, and on tags, stickers, and labels attached to the
equipment, and any other safety precautions that apply. Follow
all safety codes. Wear safety glasses and work gloves. Use care
in handling, rigging, and setting this equipment, and in
handling all electrical components.
DO NOT USE TORCH to remove any component. System
contains oil and refrigerant under pressure.
To remove a component, wear protective gloves and goggles and proceed as follows:
a. Shut off electrical power to unit.
b. Recover refrigerant to relieve all pressure from system using both high-pressure and low pressure ports.
c. Traces of vapor should be displaced with nitrogen
and the work area should be well ventilated. Refrigerant in contact with an open flame produces toxic
gases.
d. Cut component connection tubing with tubing cutter
and remove component from unit. Use a pan to catch
any oil that may come out of the lines and as a gage
for how much oil to add to the system.
e. Carefully unsweat remaining tubing stubs when necessary. Oil can ignite when exposed to torch flame.
Failure to follow these procedures may result in personal
injury or death.
Electrical shock can cause personal injury and death. Shut
off all power to this equipment during installation and service. There may be more than one disconnect switch. Tag
all disconnect locations to alert others not to restore power
until work is completed.
This unit uses a microprocessor-based electronic control
system. Do not use jumpers or other tools to short out components, or to bypass or otherwise depart from recommended procedures. Any short-to-ground of the control
board or accompanying wiring may destroy the electronic
modules or electrical components.
To prevent potential damage to heat exchanger tubes
always run fluid through heat exchangers when adding or
removing refrigerant charge. Use appropriate brine solutions in cooler and condenser fluid loops to prevent the
freezing of heat exchangers when the equipment is exposed
to temperatures below 32 F (0 C).
DO NOT VENT refrigerant relief valves within a building.
Outlet from relief valves must be vented outdoors in accordance with the latest edition of ANSI/ASHRAE (American
National Standards Institute/American Society of Heating,
Refrigeration and Air Conditioning Engineers) 15 (Safety
Code for Mechanical Refrigeration). The accumulation of
refrigerant in an enclosed space can displace oxygen and
cause asphyxiation. Provide adequate ventilation in enclosed
or low overhead areas. Inhalation of high concentrations of
vapor is harmful and may cause heart irregularities,
unconsciousness or death. Misuse can be fatal. Vapor is
heavier than air and reduces the amount of oxygen available
for breathing. Product causes eye and skin irritation.
Decomposition products are hazardous.

DO NOT re-use compressor oil or any oil that has been
exposed to the atmosphere. Dispose of oil per local codes
and regulations. DO NOT leave refrigerant system open to
air any longer than the actual time required to service the
equipment. Seal circuits being serviced and charge with
dry nitrogen to prevent oil contamination when timely
repairs cannot be completed. Failure to follow these procedures may result in damage to equipment.
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
MAJOR SYSTEM COMPONENTS . . . . . . . . . . . . . . . .3,4
Main Base Board (MBB) . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Screw Compressor Board (SCB) . . . . . . . . . . . . . . . . . 3
Electronic Expansion Valve (EXV) Board . . . . . . . . . 3
ComfortLink Compressor Protection
(CCP) Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Energy Management Module (EMM) . . . . . . . . . . . . . . 3
Enable/Off/Remote Connect Switch . . . . . . . . . . . . . . 3
Emergency On/Off Switch . . . . . . . . . . . . . . . . . . . . . . . . 3
Board Addresses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Control Module Communication. . . . . . . . . . . . . . . . . . 3
Carrier Comfort Network (CCN) Interface. . . . . . . . . 4
OPERATION DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40
Electronic Expansion Valve (EXV) . . . . . . . . . . . . . . . . 4
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 903
Catalog No. 533-00052
Printed in U.S.A.
Form 30G,H-9T
Pg 1
612 1-04
Replaces: New
Book 2
Tab 5c
Page
• INSPECTING/OPENING ELECTRONIC
EXPANSION VALVES
• BRAZED-PLATE ECONOMIZERS
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52-71
Servicing Coolers and Condensers. . . . . . . . . . . . . . 52
• TUBE PLUGGING
• RETUBING
• TIGHTENING COOLER/CONDENSER HEAD BOLTS
Inspecting/Cleaning Heat Exchangers . . . . . . . . . . . 52
• COOLERS
• CONDENSERS (30HX Only)
Water Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Condenser Coils (30GXN,R Only). . . . . . . . . . . . . . . . 53
• COIL CLEANING
• CLEANING E-COATED COILS
Condenser Fans (30GXN,R Only) . . . . . . . . . . . . . . . . 54
Refrigerant Charging/Adding Charge . . . . . . . . . . . . 55
Oil Charging/Low Oil Recharging. . . . . . . . . . . . . . . . 56
Oil Filter Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
• REPLACING THE EXTERNAL OIL FILTER
• REPLACING THE INTERNAL OIL FILTER
Compressor Changeout Sequence . . . . . . . . . . . . . . 57
• BURNOUT CLEAN-UP PROCEDURE
Moisture-Liquid Indicator. . . . . . . . . . . . . . . . . . . . . . . . 59
Filter Drier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Liquid Line Service Valve. . . . . . . . . . . . . . . . . . . . . . . . 59
Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
• LOCATION
• THERMISTOR REPLACEMENT
Pressure Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
• TROUBLESHOOTING
• FLOW SENSOR
Safety Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
• COMPRESSOR PROTECTION
• OIL SEPARATOR HEATERS (30GX)
• COOLER PROTECTION
Relief Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
• PRESSURE RELIEF VALVES
Control Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
• MAIN BASE BOARD (MBB), SCREW COMPRESSOR
BOARD (SCB), EXPANSION VALVE BOARD (EXV),
ENERGY MANAGEMENT MODULE (EMM),
COMFORTLINK™ COMPRESSOR PROTECTION
BOARD (CCP), AND THE NAVIGATOR
• RED LED
• GREEN LED
• YELLOW LED
Carrier Comfort Network (CCN) Interface . . . . . . . . 69
Replacing Defective Processor Module. . . . . . . . . . 69
Winter Shutdown Preparation . . . . . . . . . . . . . . . . . . . 70
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
PRE-START-UP PROCEDURE. . . . . . . . . . . . . . . . . . . . 71
System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
START-UP AND OPERATION. . . . . . . . . . . . . . . . . . 71,72
Actual Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Operating Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
FIELD WIRING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72-74
APPENDIX A
(Compressor Must Trip Amps) . . . . . . . . . . . . . 75-84
APPENDIX B
(Capacity Loading Sequence) . . . . . . . . . . . . . . 85-89
APPENDIX C (Available Accessories). . . . . . . . . 90,91
APPENDIX D (Building Interface) . . . . . . . . . . . . . 92-94
APPENDIX E (Cooler and
Condenser Pressure Drop) . . . . . . . . . . . . . . . . 95-100
APPENDIX F
(Typical System Components) . . . . . . . . . . . 101-112
APPENDIX G (CCN Configuration). . . . . . . . . . 113-125
APPENDIX H (30GXN,R Duplex Combinations) . . 126
CONTENTS (cont)
Page
• EXV OPERATION
• ECONOMIZER OPERATION
Oil Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Motor Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Back Pressure Valve (30GXN,R
and 30HXA only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ComfortLink Compressor Protection
(CCP) Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
• OUTPUTS
• INPUTS
Wye-Delta vs Across-the-Line (XL)
Starting Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Capacity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
• MINUTES LEFT FOR START
• MINUTES OFF TIME
• LOADING SEQUENCE
• CLOSE CONTROL
• LEAD/LAG DETERMINATION
• CAPACITY SEQUENCE DETERMINATION
• MINIMUM LOAD VALVE
• CAPACITY CONTROL OVERRIDES
Head Pressure Control . . . . . . . . . . . . . . . . . . . . . . . . . . 11
• GENERAL
• AIR-COOLED UNITS (30GXN,R)
• WATER-COOLED UNITS (30HXC)
• CONDENSERLESS UNITS (30HXA)
• 09DK AIR-COOLED CONDENSERS
• 09AZ AIR-COOLED CONDENSERS
• OPERATION SEQUENCE
• VARIABLE SPEED FAN CONTROL
• ADJUSTING PID ROUTINES
Control Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
• SWITCH
• 7-DAY SCHEDULE
• OCCUPANCY
• CCN
Cooling Setpoint Select . . . . . . . . . . . . . . . . . . . . . . . . . 17
Ice Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Cooler and Condenser (30HXC)
Pump Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
• COOLER PUMP CONTROL
• CONDENSER PUMP CONTROL
Flow Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Cooler Heater Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Oil Heater Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Navigator Display Module Usage . . . . . . . . . . . . . . . . 18
Service Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Configuring and Operating Dual Chiller
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Alarms/Alerts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Run Hours and Starts . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Temperature Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Demand Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
• DEMAND LIMIT (2-Stage Switch Controlled)
• EXTERNALLY POWERED DEMAND LIMIT
• DEMAND LIMIT (CCN Loadshed Controlled)
Cooling Set Point (4 to 20 mA). . . . . . . . . . . . . . . . . . . 39
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 41-51
Checking Display Codes . . . . . . . . . . . . . . . . . . . . . . . . 41
Unit Shutoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Complete Unit Stoppage . . . . . . . . . . . . . . . . . . . . . . . . 41
Single Circuit Stoppage . . . . . . . . . . . . . . . . . . . . . . . . . 41
Restart Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
• POWER FAILURE EXTERNAL TO THE UNIT
Alarms and Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Compressor Alarm/Alert Circuit . . . . . . . . . . . . . . . . . 42
EXV Troubleshooting Procedure. . . . . . . . . . . . . . . . . 50
2
CONTENTS (cont)
ComfortLink Compressor Protection (CCP)
Board — The CCP board monitors the high-pressure
Page
switch status, running current and motor temperature for each
compressor. Each CCP board controls up to 2 compressors.
The CCP board also controls the motor cooling solenoid, oil
solenoid and contactor outputs. A pre-punched configuration
header for each compressor determines the must trip amps
setting. Each CCP board sends the MBB each compressor's
motor temperature, relay status and running current as a
percentage of the must trip amps value. The CCP board also
communicates any alarm conditions as the feedback value.
Energy Management Module (EMM) — The EMM
is available as a factory-installed option or as a field-installed
accessory. The EMM receives 4 to 20 mA inputs for the
temperature reset, cooling set point reset and demand limit
functions. The EMM also receives the switch inputs for the
field-installed 2-stage demand limit and ice done functions.
The EMM communicates the status of all inputs with the
MBB, and the MBB adjusts the control point, capacity limit,
and other functions according to the inputs received.
Enable/Off/Remote Contact Switch — The Enable/
Off/Remote Contact switch is a 3-position switch used to
control the chiller (see Table 1). When switched to the Enable
position the chiller is under its own control. Move the switch to
the Off position to shut the chiller down. Move the switch to
the Remote Contact position and a field-installed dry contact
can be used to start the chiller. The contacts must be capable of
handling a 24-vac, 20-mA load. In the Enable and Remote
Contact (dry contacts closed) positions, the chiller is allowed to
operate and respond to the scheduling configuration, CCN configuration and set point data.
Emergency On/Off Switch — The Emergency On/
Off switch should only be used when it is required to shut the
chiller off immediately. Power to the MBB, EMM, EXV, SCB
and Navigator display is interrupted when this switch is off and
all outputs from these modules will be turned off.
APPENDIX I (Motormaster® V
Operation Instructions) . . . . . . . . . . . . . . . . . . 127-129
APPENDIX J (Maintenance Log) . . . . . . . . . . . . . . . . 130
START-UP CHECKLIST (For 30GX,HX
Liquid Chiller). . . . . . . . . . . . . . . . . . . . . . . CL-1 to CL-10
GENERAL
IMPORTANT: These units use refrigerant R-134a.
Compressor oil used with R-134a is Castrol Icematic
SW-220, Carrier Specification #PP47-32.
This publication contains Controls Start-Up, Service, Operation and Troubleshooting data for the 30GXN,R080-528 and
30HXA,C076-271 screw chillers.
Circuits are identified as circuits A and B, and compressors
are identified as A1 or A2 in circuit A, and B1 or B2 in
circuit B. Refer to Appendix H for Duplex unit combinations.
The 30GXN,GXR,HX Series chillers feature microprocessor-based electronic controls and electronic expansion valves
(EXV) in each refrigeration circuit.
The control system cycles compressor loaders and/or compressors to maintain the selected leaving fluid temperature set
point. The system automatically positions the EXV to maintain
the specified discharge gas superheat temperature in the circuit.
The system also has capabilities to control a condenser water
valve to maintain suitable discharge pressure for the 30HXC
unit. Safeties are continuously monitored to prevent the unit
from operating under unsafe conditions. A scheduling function
can be programmed by the user to control the unit’s occupied
and unoccupied schedules. The control also operates a test
function and a manual control function that allows the operator
to check output signals and ensure components are operable.
MAJOR SYSTEM COMPONENTS
Main Base Board (MBB) — This board contains the
Board Addresses — The Main Base Board (MBB) has
an Instance jumper that must be set to ‘1’. The EXV, SCB and
EMM boards have 4-position DIP switches that must be set to
'On' for all boards. The CCP address has a 4-position DIP
switch. Switches 3 and 4 set the address.
majority of the control system operating software and controls
the operation of the machine. It has 11 input channels and
11 output channels.
The MBB continuously monitors input/output channel information received from all the modules and controls all output
signals for all output channels. The processor module also
controls the EXV driver module, commanding it to open or
close each EXV in order to maintain the proper cooler level.
Information is transmitted between the MBB; ComfortLink™
Compressor Protection (CCP) boards, the EXV driver module,
the Screw Compressor Board (SCB), the Energy Management
Module (EMM) and the Navigator modules through a 3-wire
communications bus called the Local Equipment Network
(LEN). The remote enhanced display is connected to the MBB
through a 3-wire communications bus, but uses a different
communication bus called the Carrier Comfort Network
(CCN). The CCN bus is also used to communicate to
other CCN devices when the unit is installed in a network
application.
Screw Compressor Board (SCB) — The SCB has
8 inputs along with 2 analog and 5 discrete outputs. The SCB
module communicates the status of the inputs with the MBB
and operates the oil heater (30GXN,R only), cooler heater
(30GXN,R only) and oil pump outputs.
Control Module Communication
RED LED — Proper operation of the control boards can be visually checked by looking at the red status LEDs (lightemitting diodes). When operating correctly, the red status
LEDs should be blinking in unison at a rate of once every
2 seconds. If the red LEDs are not blinking in unison, verify the
board address and that correct power is being supplied to all
modules. Be sure that the Main Base Board (MBB) is supplied
with the current software. If necessary, reload current software.
If the problem still persists, replace the MBB. A board LED
that is lit continuously or blinking at a rate of once per second
or faster indicates that the board should be replaced.
GREEN LED — The MBB has one green LED. The Local
Equipment Network (LEN) LED should always be blinking
whenever power is on. All other boards have a LEN LED that
should be blinking whenever power is on. Check LEN connections for potential communication errors at the board J3 and/or
J4 connectors. Communication between modules is accomplished by a 3-wire bus. These 3 wires run in parallel from
module to module. The J5 connector on the MBB provides
both power and communication directly to the Navigator.
YELLOW LED — The MBB has one yellow LED. The
Carrier Comfort Network (CCN) LED will blink during times
of network communication.
Electronic Expansion Valve (EXV) Board —
The EXV board has 4 inputs and 2 outputs. It receives signals
from the MBB and operates the electronic expansion devices.
The electronic expansion valve board also sends the MBB the
status of its 4 input channels.
3
Carrier Comfort Network (CCN) Interface —
OPERATION DATA
Electronic Expansion Valve (EXV) — The
The 30GXN,R and 30HX chiller units can be connected to the
CCN if desired. The communication bus wiring is a shielded,
3-conductor cable with drain wire and is supplied and installed
in the field. The system elements are connected to the communication bus in a daisy chain arrangement. The positive pin of
each system element communication connector must be wired
to the positive pins of the system elements on either side of it.
This is also required for the negative and signal ground pins of
each system element. Wiring connections for CCN should be
made at TB3. Consult the CCN Contractor's Manual for further information.
NOTE: Conductors and drain wire must be 20 AWG (American Wire Gage) minimum stranded, tinned copper. Individual
conductors must be insulated with PVC, PVC/nylon, vinyl,
Teflon, or polyethylene. An aluminum/polyester 100% foil
shield and an outer jacket of PVC, PVC/nylon, chrome vinyl,
or Teflon with a minimum operating temperature range of
–20 C to 60 C is required. Wire manufactured by Alpha (2413
or 5463), American (A22503), Belden (8772), or Columbia
(02525) meets the above mentioned requirements. It is important when connecting to a CCN communication bus that a
color-coding scheme be used for the entire network to simplify
the installation. It is recommended that red be used for the
signal positive, black for the signal negative and white for the
signal ground. Use a similar scheme for cables containing
different colored wires. At each system element, the shields of
its communication bus cables must be tied together. If the communication bus is entirely within one building, the resulting
continuous shield must be connected to a ground at one point
only. If the communication bus cable exits from one building
and enters another, the shields must be connected to grounds at
the lightning suppressor in each building where the cable
enters or exits the building (one point per building only).
To connect the unit to the network:
1. Turn off power to the control box.
2. Cut the CCN wire and strip the ends of the red (+), white
(ground), and black (–) conductors. (Substitute appropriate colors for different colored cables.)
3. Connect the red wire to (+) terminal on TB3, the white
wire to COM terminal, and the black wire to the
(–) terminal.
4. The RJ-14 CCN connector on TB3 can also be used, but
is only intended for temporary connection (for example: a
laptop computer running Service Tool).
MBB
controls the EXV through the EXV board. The EXV (electronic expansion valve) is a device that contains a linear actuator
stepper motor. See Fig. 1.
EXV
COOLER FEED
SIGHT GLASS
Fig. 1 — Electronic Expansion Valve (EXV)
EXV OPERATION — High-pressure liquid refrigerant enters
the valve through the side. A series of calibrated slots are located inside the orifice assembly. As refrigerant passes through
the orifice, the pressure drops and the refrigerant changes to a
2-phase condition (liquid and vapor). To control refrigerant
flow for different operating conditions, the sleeve moves up
and down over the orifice, thereby changing orifice size. The
sleeve is moved by a linear stepper motor. The stepper motor
moves in increments and is controlled directly by the processor
module. As the stepper motor rotates, motion is transferred into
linear movement by the lead screw. Through the stepper motor
and lead screw, 15,000 discrete steps of motion are obtained.
The large number of steps and long stroke result in very accurate control of refrigerant flow.
Each compressor has a discharge gas temperature sensor
mounted vertically in the top of the muffler assembly. The
discharge gas temperature sensor monitors the discharge gas
temperature leaving each compressor and sends this information to the MBB through LEN communication with the EXV
board. At initial start-up, the EXV position is at zero. After
that, the microprocessor keeps accurate track of the valve
position in order to use this information as input for the other
control functions. The processor does this by initializing the
EXVs at start-up. The processor sends out enough closing
pulses to the valve to move it from fully open to fully closed,
then resets the position counter to zero. From this point, until
the next initialization, the processor counts the total number of
open and closed steps it has sent to each valve.
ECONOMIZER OPERATION — Economizers are factory
installed on 30GXN,R108,118-350 and associated modular
units and 30HXA,C161-271 units. All other sizes use standard
EXVs. The economizer is a brazed plate heat exchanger
designed to improve chiller capacity and efficiency as well as
providing compressor motor cooling. See Fig. 2. On 30GX
chillers the economizer is active when any compressor is fully
loaded. On 30HXA,C chillers the economizer is active all the
time.
Liquid refrigerant is supplied from the condenser to the
top of the economizer. As the refrigerant passes through the
economizer, its pressure is reduced to an intermediate level.
Next, the refrigerant flows to the EXV which regulates flow to
the cooler to maintain the discharge superheat setpoint.
Table 1 — Unit Mode from Control/Enable/Off/
Remote Contact and CCN State
SWITCH
POSITION
REMOTE
CONTACTS
ENABLE
NR
OFF
NR
OPEN
REMOTE
CONTACT
CLOSED
CCN
CONFIGURATION
DISABLE
ENABLE
NR
NR
DISABLE
ENABLE
CCN
STATE
NR
RUN
STOP
NR
NR
NR
RUN
STOP
UNIT
MODE
LOCAL ON
CCN ON
CCN OFF
LOCAL OFF
LOCAL OFF
LOCAL ON
CCN ON
CCN OFF
LEGEND
CCN — Carrier Comfort Network
NR
— Input Not Read by Processor
NOTE: If the unit is configured for a clock, then the unit is under clock control if
it is in an ON mode.
4
OIL FEED
TO COMPRESSOR
MOTOR COOLING
SOLENOID
CHECK
VALVE
TXV
BULB
OIL SUPPLY
LINE TO PUMP
OIL
PUMP
TXV
SOLENOID
(30GXN,R ONLY)
OIL
SEPARATOR
FILTER
BRAZED PLATE
ECONOMIZER
Fig. 3 — Oil Pump
Fig. 2 — Brazed Plate Economizer
The increase in performance is achieved by diverting a
small amount of liquid through a thermostatic expansion valve
to a second circuit in the brazed-plate heat exchanger. This will
further subcooling the liquid in the first circuit as the refrigerant
flashes to vapor. This increase in subcooling provides additional capacity. Also, since the additional power required to accomplish this is minimal; the efficiency of the machine improves.
The vapor that flashes leaves the top of the economizer where
it passes to the compressor and is used to provide motor cooling. After passing over the motor windings, the refrigerant
reenters the cycle at an intermediate port in the compression
cycle.
When the oil pump is operating, it is capable of increasing
oil pressure from 0 psi to 50 psi depending on the oil flow
requirements of the compressor. For example, if the compressor needs 2 gpm (high pressure differential condition) and
the oil pump is capable of 1.2 gpm, there is no pressure rise and
the oil flow will bypass the check valve and supply the 2 gpm
to the compressor. If the compressor requires .75 gpm, the
oil pump will increase pressure to satisfy the oil pressure
requirement.
The pump will continue to operate until the discharge pressure minus economizer pressure is greater then 17 psi plus the
oil system pressure drop.
Example:
Discharge pressure
80 psi
Oil pressure
65 psi
Oil system pressure drop
80 – 65 = 15 psi
Economizer pressure
55 psi
Differential oil pressure
(65 – 55) = 10 psi
Suction pressure
40 psi
Based on the above conditions the oil pump will be started
because differential oil pressure equals 10 psi. See Table 2.
Oil Pumps — The 30GXN,GXR,HX screw chillers use
one externally mounted prelubricating oil pump per circuit.
This pump is operated as part of the start-up sequence. On
30GXN,R units, the pumps are mounted above the base rails
on the oil separator side of the unit (see Fig. 3). The pumps are
mounted to a bracket on the condensers of 30HXC units and to
the oil separator on 30HXA units.
When a circuit is required to start, the controls energize the
oil pump first and read the oil pressure transducer reading. The
pump is operated for a period of 20 seconds, after which the oil
solenoid is energized to open the oil inlet valve at the compressor. The control again reads the pressure from the oil pressure
transducer. If the pump has built up sufficient oil pressure, the
compressor is allowed to start after 15 seconds.
Once the compressor has started, the oil pump will continue
to run for 120 seconds.
If the pump is not able to build up enough oil pressure, the
pump is turned off. Within 3 seconds, the pump is re-energized
and makes two additional attempts, if necessary, to build oil
pressure. The control generates an alarm if the third attempt
fails.
The oil pump is also used to supplement system pressure
under certain operating conditions. The oil flow requirements
of the compressor vary based on pressure differential across the
compressor. The oil pump is designed to provide differential oil
pressure during low pressure differential conditions. It is not
designed to overcome high pressure drop across filters during
high pressure differential conditions.
If the differential oil pressure (oil pressure – economizer
pressure) for a compressor is too low the oil pump will be
started. Just before the oil pump is started the control measures
the pressure differential between the discharge pressure and oil
pressure (oil system pressure drop). The oil system pressure
drop is saved and used to determine when the oil pump should
be shut off.
Table 2 — Oil Pump Suction Pressure
Requirements
SUCTION PRESSURE
(SP)
 35 psig
35 psig < SP < 51 psig
 51 psig
OIL PUMP TURNS ON
WHEN DIFFERENTIAL
PRESSURE IS LESS THAN:
12 psig
14.5 psig
17 psig
The oil pump will continue to operate until the discharge
pressure minus economizer pressure (which equals 25) is
greater than 17 plus 15 (oil system loss before pump was
started). The only way this can be satisfied is if the discharge
pressure increases or the compressor unloads at which point the
oil pump will be shut off.
Motor Cooling — Compressor motor winding temperatures are controlled to a set point of 200 F (93.3 C). The control
accomplishes this by cycling the motor cooling solenoid valve
to allow liquid refrigerant to flow across the motor windings as
needed. On 30GXN,R units equipped with economizers, flash
gas leaves the top of the economizer (when the circuit is fully
loaded for 30GXN,R models only) and continually flows to the
motor windings. All refrigerant used for motor cooling reenters
the rotors through a port located midway along the compression cycle and is compressed to discharge pressure.
5
separator is not at least 15 psig greater than the economizer
pressure.
Back Pressure Valve (30GXN,R and 30HXA
only) — This valve is located on the oil separator outlet on
30GXN,R units and mounted on the oil separator shell of
30HXA units. The valve’s function is to ensure that there is
sufficient system differential pressure to allow for oil to be
driven back to the compressor. A small copper line (economizer pressure) is connected to the top of the valve, which contains
an internal spring that closes a piston if the pressure in the oil
Sensors — The 30GXN,GXR,HX ComfortLink™ control
system gathers information from sensors to control the operation
of the chiller. The units use up to 10 standard pressure transducers and up to 10 standard thermistors (including 4 motor
temperature thermistors). The sensors are listed in Table 3.
Table 3 — Thermistor and Transducer Locations
Sensor
T1
T2
Motor Temp A1
Motor Temp A2*
Motor Temp B1
Motor Temp B2†
T5
T6
T3*
T4†
T9 (optional)**
T10 (optional)**
COND EWT (optional)**
COND LWT (optional)**
Sensor
DPT-A
SPT-A
EPT-A
OPT-A1
OPT-A2*
DPT-B
SPT-B
EPT-B
OPT-B1
OPT-B2†
THERMISTORS
Description
Location
Cooler Leaving Fluid Temp
Cooler Head Leaving Fluid Side
Cooler Entering Fluid Temp
Cooler Head Entering Fluid Side
Motor Temperature A1
Compressor A1 Junction Box
Motor Temperature A2
Compressor A2 Junction Box
Motor Temperature B1
Compressor B1 Junction Box
Motor Temperature B2
Compressor B2 Junction Box
Discharge Gas Temp Comp A1
Top of Comp A1 Discharge Line
Discharge Gas Temp Comp B1
Top of Comp B1 Discharge Line
Discharge Gas Temp Comp A2
Top of Comp A2 Discharge Line
Discharge Gas Temp Comp B2
Top of Comp B2 Discharge Line
Outdoor Air Thermistor/Dual LWT
Outside Air Stream/Common Leaving Fluid
Space Temperature
Conditioned Space
Condenser Entering Water Thermistor
Condenser Entering Fluid Line
Condenser Leaving Water Thermistor
Condenser Leaving Fluid Line
PRESSURE TRANSDUCERS
Description
Location
Discharge Pressure Circuit A
Top of Condenser Separator Circuit A
Suction Pressure Circuit A
Top of Cooler Circuit A
Economizer Pressure Circuit A
Economizer Line Entering Comp A
Oil Pressure Compressor A1
Compressor A1 Oil Connection
Oil Pressure Compressor A2
Compressor A2 Oil Connection
Discharge Pressure Circuit B
Top of Oil Separator Circuit B
Suction Pressure Circuit B
Top of Cooler Circuit B
Economizer Pressure Circuit B
Economizer Line Entering Comp B
Oil Pressure Compressor B1
Compressor B1 Oil Connection
Oil Pressure Compressor B2
Compressor B1 Oil Connection
*30HX206-271 and 30GXN,R204-350, 370-528 only.
†30GXN,R281-350 only.
**Sensors are available as accessories for field installation (30HXC only).
6
Connection Terminals
MBB, J8-13,14
MBB, J8-11,12
CCP1, plug J5
CCP2, plug J5
CCP1, plug J9
CCP2, plug J9
EXV, J5-11,12
EXV, J5-9,10
EXV, J5-7,8
EXV, J5-5,6
TB5, terminals 7,8
TB5, terminals 5,6
TB2, terminals 1,2
TB2, terminals 3,4
Connection Terminals
MBB, J8-21,22,23
MBB, J8-24,25,26
SCB, J5-7,8,9
SCB, J5-4,5,6
SCB, J5-1,2,3
MBB, J8-15,16,17
MBB, J8-18,19,20
SCB, J6-7,8,9
SCB, J6-4,5,6
SCB, J6-1,2,3
INPUTS:
• motor temperature
• three-phase current
• high-pressure switch
A diagram of the CCP board is shown in Fig. 4. One CCP
board is installed on 30GXN,R080-178 and 30HXA,C076-186
units and two CCP boards are installed on 30GXN,R204-350
and 30HXA,C206-271 units. The address for each CCP board
is set using DIP (dual in-line package) switches. For CCP1
(compressor A1 and B1), DIP switch 1 should be set to ‘L’
(‘On’ position for LEN communication). Switches 2, 3 and 4
should be set to ‘0’ (“OFF” position). For CCP2 (compressor
A2 for 30GXN,R204-268 and 30HXA,C206-271 and compressor B2 for 30GXN,R281-350), switch 1 should be set to
‘L’ and switches 3 and 4 should be set to ‘1’ (“ON” position).
Switch 2 should be set to ‘0’ (“OFF” position). See Table 4 for
CCP board connections. The CCP has a reset button located
between the DIP switch and the J10 connector.
Each compressor's MTA (must trip amps) setting is communicated to the MBB during the initialization period. See Table 5
for DIP switch settings.
ComfortLink™ Compressor Protection (CCP)
Board — One CCP board controls up to 2 compressors.
The CCP provides the following functions:
• compressor main contactor control
• Wye-Delta contactor transition
• compressor ground current protection
• motor temperature reading
• high-pressure protection
• reverse rotation protection
• current imbalance protection
• compressor oil solenoid control
• motor cooling solenoid control
• LEN communications
• starting and running overcurrent protection
The CCP has the following 4 output relays and 3 inputs:
OUTPUTS:
• compressor contactor
• compressor oil solenoid
• compressor motor cooling solenoid
• Wye-Delta transition relay
J7
ON
1
L
1
1 2 3 4 5
J1
J6
3
2
1
J9
COMP B1/B2
MTA HEADER
S
0
SW1
1
2
3
0
SW3
1
2
3
4
1
8
SW2
J8
1
2
3
SW4
3
2
1
J10
1 1
NOTES:
1. The red LED blinks continuously when the module is operating properly.
2. The green LED blinks continuously when communicating properly with MBB.
3. On all connectors, pin 1 is identified by a “●”.
4. Control power to CCP board must be off before
making any changes to DIP switch settings.
5. DIP switch 2 disables compressor ground current
protection, ON = DISABLE.
RESET
BUTTON
L
LEGEND
Light-Emitting Diode
Main Base Board
Must Trip Amps
LEN (Local Equipment Network)
SIO (Sensor Input/Output)
J4
RED LED
ON
—
—
—
—
—
0 0
LED
MBB
MTA
L
S
1 2 3 4
S
DIP
SWITCH
COMP A1/A2
MTA HEADER
J5
J2
8
1
GREEN LED
J3
5 4 3 2 1
Fig. 4 — ComfortLink™ Compressor Protection (CCP) Board
7
1
2
3
1
2
3
J11
3
2
1
1
2
3
4
Position 12 in model number) are supplied with factoryinstalled Wye-Delta starters. All other voltage options can be
ordered with either Wye-Delta or XL starting options. The XL
starting method is the most cost effective and simply starts the
compressor motor in a Delta configuration (the motors are
designed for continuous operation in this configuration) using a
single contactor. See Fig. 5. This is the simplest starting method to use and is ideal where starting current does not require
limiting.
Where current limitations exist, the Wye-Delta option may
be used. See Fig. 6. This option uses a factory-installed starter
assembly for each compressor, which consists of 3 contactors
labelled 1M, 2M, and S. As the compressor is started, the CCP
module energizes contactors 1M and S, which connects and
energizes the motor windings in a Wye configuration. The
starting current required will be approximately 60% less than
that required for an XL start due to the higher impedance of the
motor windings when Wye connected. The compressor will
attain about 100% of its normal operating speed (approximately 3 to 5 seconds) before the CCP module deenergizes the S
contactor and energizes the 2M contactor, switching the compressor windings to a Delta wiring configuration. The S and
2M contactors in the starter assembly are both mechanically
and electrically interlocked so that they will not both be energized at the same time.
Do not alter the factory-installed power wiring from the
control box terminal block to the compressor junction block.
Doing so will cause permanent damage to the compressor and
will require that the compressor be replaced.
Table 4 — ComfortLink™ Compressor Protection
(CCP) Board Plug Connections
CCP PLUG
J1
J2, J6
J3, J7
J4, J8
J5, J9
J10, J11
DESCRIPTION
24-vac Power Input
Compressor Contactor(s)
High Pressure Switch, Oil and Motor Cooling
Solenoids
Current Sensor Input
Compressor Motor Temperature Input
Communication Connections
NOTE: Plugs J2-J5 are for compressors A1 (CCP1) or A2 (CCP2).
Plugs J6-J9 are for compressor B1 (CCP1) or B2 (CCP2).
Table 5 — CCP Address DIP Switch Settings
UNIT
30GXN,R080-178
30HXA076-186
30HXC076-186
30GXN,R204-350
30HXA206-271
30HXC206-271
1
L
CCP1
2
3
OFF 0
4
0
1
—
L
OFF
0
L
0
CCP2
2
3
—
—
OFF
1
4
—
1
To verify proper must trip amps header configuration, use
the Navigator and the Configuration mode portion of Appendix
A to locate the items CM.A1, CM.A2, CM.B1 and CM.B2 in
the UNIT sub-mode. See Appendix A for correct settings. If
the values do not match those in Appendix A, verify that the
configuration headers have been properly punched out.
The CCP communicates on the LEN (Local Equipment
Network) bus to the MBB. Proper operation of the CCP board
can be verified by observing the 2 LEDs located on the board.
The red LED blinks at a rate of once every 1 to 2 seconds. This
indicates that the module is powered and operating correctly.
The green LED blinks when the module is satisfactorily communicating with the MBB. The CCP communicates status of
its inputs and outputs and reports 13 different alarm conditions
to the MBB.
Capacity Control — The control system cycles com-
pressors, loaders, and minimum load control valves to maintain
the user-configured leaving chilled fluid temperature set point.
Entering fluid temperature is used by the microprocessor to
determine the temperature drop across the cooler and is used in
determining the optimum time to add or subtract capacity
stages. The chilled fluid temperature set point can be automatically reset by the return fluid temperature, space temperature or
outdoor-air temperature reset features. It can also be reset from
an external 4 to 20 mA signal (requires optional EMM), or
from a network signal.
The capacity control algorithm runs every 30 seconds. The
algorithm attempts to maintain the Control Point at the desired
set point. Each time it runs, the control reads the entering and
leaving fluid temperatures. The control determines the rate at
which conditions are changing and calculates 2 variables based
on these conditions. Next, a capacity ratio (SMZ, Outputs
under Sub-mode GEN.O) is calculated using the 2 variables to
determine whether or not to make any changes to the current
stages of capacity. This ratio value ranges from –100 to
+ 100%. If the next stage of capacity is a compressor, the control starts (stops) a compressor when the ratio reaches + 100%
(–100%). If the next stage of capacity is a loader, the control
energizes (deenergizes) a loader when the ratio reaches + 60%
(–60%). Loaders are allowed to cycle faster than compressors,
to minimize the number of starts and stops on each compressor.
A delay of 90 seconds occurs after each capacity step change.
MINUTES LEFT FOR START — This value is displayed in
the Status subfunction and represents the amount of time to
elapse before the unit is started. This value can be zero without
the machine running in many situations. This can include
being unoccupied, Remote Contact/Off/Enable switch in the
OFF position, CCN not allowing unit to start, Demand Limit in
effect, no call for cooling due to no load, and alarm or alert
conditions present. If the machine should be running and none
of the above are true, a minimum off time may be in effect.
The machine should start normally once the time limit has
expired.
The CCP module has many features that are specifically
designed to protect the compressor, including reverse rotation protection. Do not attempt to bypass or alter any of the
factory wiring. Any compressor operation in the reverse
direction will result in a compressor failure that will require
compressor replacement.
The MBB will generate an alert when it receives an
alarm input from the CCP. The alert will be generated as T051,
T052, T055, or T056 (for Compressors A1, A2, B1,
B2 respectively). Press the ENTER and ESCAPE buttons on the
Navigator simultaneously to expand the full meaning of the
alert. For example, the Navigator will read: T055 CIRCUIT B,
COMPRESSOR 1 FAILURE-HIGH PRESSURE SWITCH
TRIP.
The high-pressure switch is wired in series with the relay
coils of the 8 relays on the CCP. If this switch opens during
operation, all relays on the CCP are deenergized and the compressor is stopped. The failure is reported to the MBB and the
processor module locks off the compressor from restarting
until the alarm is manually reset.
Wye-Delta vs Across-the-Line (XL) Starting
Option — All 30GXN,R and 30HX chillers operating at
voltages of 230-3-60, 208/230-3-60 or 230-3-50 (4, 5, or 8 at
8
COMPRESSOR JUNCTION BOX
COMPRESSOR CONTACTOR
TERMINAL BLOCK
1
1
21
L1
T1
L2
T1
L3
T3
2
2
22
2
4
3
3
23
6
1
5
3
JUMPER BARS
Fig. 5 — Across-the-Line (XL) Compressor Wiring
1
1
21
T1
L1
2
L2
22
3
23
COMPRESSOR JUNCTION BOX
COMPRESSOR STARTER ASSEMBLY
TERMINAL BLOCK
6
4
2
1M
T2
3
L3
T3
L1
T1
1
6
2
4
3
5
21
L2
T2
2M
T3
L3
23
T1
L1
L2
22
S
T2
5
T3
L3
Fig. 6 — Wye-Delta Compressor Wiring
required to maintain better leaving fluid temperature
regulation. All stages of unloading are available. See
Appendix B for an example.
LEAD/LAG DETERMINATION (LLCS, Configuration
mode under sub-mode OPT2) — This is a configurable
choice and is factory set to be automatic. The value can be
changed to Circuit A or Circuit B leading, as desired. Set at
automatic, the circuit with the lowest hours is started first.
Changes to which circuit is the lead circuit and which is the lag
are made when shutting off compressors.
On 30HX206-271 and 30GXN,R204-350 units set for
staged loading, the control fully loads the lead circuit before
starting the lag circuit and unloads the lag circuit first. When
these units are set for equal loading, the control maintains
nearly equal capacities in each circuit when the chiller is loading and unloading.
CAPACITY SEQUENCE DETERMINATION (LOAD,
Configuration mode, under sub-mode OPT2) — This is configurable as equal circuit loading or staged circuit loading with
the default set at staged. The control determines the order in
which the steps of capacity for each circuit are changed. This
control choice does NOT have any impact on machines with
only 2 compressors.
MINUTES OFF TIME (DELY, Configuration mode under
sub-mode OPT2) — This user-configurable time period is
used by the control to determine how long unit operation is
delayed after power is applied/restored to the unit. Typically,
this time period is configured when multiple machines are
located on a single site. For example, this gives the user the
ability to prevent all the units from restarting at once after a
power failure. A value of zero for this variable does not mean
that the unit should be running.
LOADING SEQUENCE — The 30GXN,GXR,HX compressor efficiency is greatest at full load. Therefore, the following
sequence list applies to capacity control.
1. The next compressor is not started until all others are
running at 100%.
2. The second unloading stage is only used during initial
capacity staging of the unit at start-up.
3. Whenever a compressor is started in a circuit, the loaders
in the circuit are deenergized for 15 seconds before the
compressor is started. The loaders are energized 90 seconds after the compressor is started.
CLOSE CONTROL (CLS.C, Configuration mode under
sub-mode OPT2) — When configured for Close Control, the
control is allowed to use any loading/capacity control devices
9
6. Adjust the minimum load ball valve until the cooler
temperature difference reading from Step 5 is equal to
half of the temperature difference reading from Step 3.
7. Open the ball valve to decrease the temperature difference or close the ball valve to increase the temperature
difference (T). When the valve is adjusted correctly, the
difference between cooler entering and leaving fluid temperatures when the minimum load control is energized
must be at least half of the temperature difference when
the minimum load control is deenergized. For example, if
the difference between the cooler entering and leaving
water temperature is 3 F with the valve deenergized,
then the difference between cooler entering and leaving
water temperature must be at least 1.5 F with the valve
energized.
Once the outputs have been tested and the ball valve
adjusted, the installation is complete. Disable manual control
and return chiller to desired operational status.
CAPACITY CONTROL OVERRIDES — The following overrides will modify the normal operation of the routine.
Deadband Multiplier — The user configurable Deadband
Multiplier (Z.GN, Configuration mode under sub-mode SLCT)
has a default value of 2.0. The range is from 1.0 to 4.0. When
set to other than 1.0, this factor is applied to the capacity Load/
Unload Factor. The larger this value is set, the longer the control will delay between adding or removing stages of capacity.
Figure 7 shows how compressor starts can be reduced over
time if the leaving water temperature is allowed to drift a larger
amount above and below the set point. This value should be set
in the range of 3.0 to 4.0 for systems with small loop volumes.
The Main Base Board (MBB) closely follows the rate of compressor cycling for each circuit.
First Stage Override — If the current capacity stage is zero,
the control will modify the routine with a 1.2 factor on adding
the first stage to reduce cycling. This factor is also applied
when the control is attempting to remove the last stage of
capacity.
Slow Change Override — The control prevents the capacity
stages from being changed when the leaving fluid temperature
is close to the set point (within an adjustable deadband) and
moving towards the set point.
Ramp Loading — (RL.S, Configuration mode under submode SLCT) — Limits the rate of change of leaving fluid
temperature. If the unit is in a Cooling mode and configured
for Ramp Loading, the control makes 2 comparisons before
deciding to change stages of capacity. The control calculates a
temperature difference between the control point and leaving
fluid temperature. If the difference is greater than 4° F (2.2° C)
and the rate of change (°F or °C per minute) is more than the
configured Cooling Ramp Loading value (CRMP, Configuration mode under sub-mode SLCT), the control does not allow
any changes to the current stage of capacity.
Low Entering Fluid Temperature Unloading — When the
entering fluid temperature is below the control point, the
control will attempt to remove 25% of the current stages being
used. If exactly 25% cannot be removed, the control removes
an amount greater than 25%, but no more than necessary. The
lowest stage will not be removed.
Low Discharge Superheat — If a circuit’s discharge superheat
is less than 15 F (8.3 C), the control does not increase the
current capacity stage. If the discharge superheat is less than
5 F (2.8 C) and decreasing, the circuit is unloaded every
30 seconds until the superheat is greater than 5 F (2.8 C). The
final capacity stage is not unloaded unless an alarm condition
exists. This override is ignored for the first 3 minutes after a
compressor is started.
MINIMUM LOAD VALVE (MLVS, Configuration mode
under sub-mode OPT1) — When this option is installed and
configured, the first stage of capacity is altered by energizing
the Minimum Load valve relay. Once the control requires
more capacity, the minimum load valve is deenergized and
normal capacity staging resumes with loaders and compressors. Similarly, the Minimum Load valve relay will be energized for the last stage of capacity to be used before the circuit
is shut down.
Configure Unit for Minimum Load Control — The chiller
must be configured for minimum load control operation. This
may be done using the Navigator. Set the Enable/Off/Remote
Contact switch in the Off position.
1. Press
ESCAPE
2. Press
3. Press
then
until ‘Select a Menu Item’ is displayed.
to illuminate the Configuration mode LED.
and
to select ‘OPT1’. Press
to select ‘MLV’.
ENTER
ENTER
and
4. Press ENTER and enter the Password (use arrow
keys and press ENTER for each digit) if required.
5. Use
to change the flashing ‘No’ to ‘Yes’. Press
and the display says ‘MLV Yes’.
ENTER
The chiller is now configured for minimum load valve control.
Test Minimum Load Relay Outputs — After the unit is configured, test the operation of the relay and solenoid valve using
the Service Test mode.
1. Switch the Enable/Off/Remote Contact switch to the
‘Off’ position.
2. Press ESCAPE on the Navigator to display ‘Select a Menu
Item’ and press
to illuminate the Service Test LED.
3. Press
4. Press
ENTER
and ‘TEST OFF’ will be displayed.
ENTER
(enter Password if required),
to display ‘TEST ON’.
and then
ENTER
5. Switch the EOR (Enable/Off/Remote Contact) switch to
the “Enable” position.
6. Press
to select ‘COMP’ and press
ENTER
.
7. Press
to select ‘MLV OFF’. Press ENTER followed
by
and ENTER again. The minimum load valve output
will be turned on. Both circuits’ solenoids are turned on at
the same time.
8. Press ENTER , followed by
the valve output off.
and
ENTER
again to turn
Adjust Setting of Minimum Load Ball Valve — The minimum load ball valve must be adjusted to suit the application.
Calibrate one circuit at a time as follows:
1. Adjust the ball valve so that it is approximately half open.
2. Operate the chiller in Manual Control mode, with one
circuit operating, and all compressor loaders deenergized.
3. Record the cooler T (the difference between cooler
entering fluid temperature and cooler leaving fluid
temperature) at this fully unloaded condition.
4. Use the Manual Control feature to enable the minimum
load valve for the circuit that is operating.
5. Observe and record the cooler T with the minimum load
valve energized.
10
2 STARTS
DEADBAND EXAMPLE
47
7
6
46
45
LWT (F)
LWT (C)
8
44
43
42
5
41
0
200
400
600
TIME (SECONDS)
800
1000
3 STARTS
STANDARD
DEADBAND
LEGEND
LWT — Leaving Water Temperature
MODIFIED
DEADBAND
Fig. 7 — Deadband Multiplier
fan cycling pressure switches (shipped in the 30HXA control
box), temperature switches, and an accessory Motormaster®
control to maintain head pressure independent of 30HXA unit
control. The fans are staged or speed varied (30GXN,R) or
water valve controlled (30HXC) based on each circuit’s saturated condensing temperature and compressor status. Water
cooled units (30HXC) operating at less than 70 F (21.1 C) for
entering condenser water require the use of head pressure
control.
The chiller must be field configured for the options shown
in Table 6. Fan stage settings are shown in Table 7.
AIR-COOLED UNITS (30GXN,R) — See Fig. 8 for condenser fan locations.
Without Motormaster V Control — The first stage of fans are
turned on based on compressor status or a Head Pressure Set
Point based on Saturated Condensing Temperature (SCT).
Additional fan stages are added when the SCT exceeds the
Head Pressure Set Point. The Head Pressure Set Point is
configurable in the Set Point sub-mode. The default is 113 F
(45 C). Once a fan stage has been added, the software temporarily modifies the head pressure set point by adding 15 F
(8.3 C) for 35 seconds. A fan stage will be removed when the
Saturated Condensing Temperature has been less than the
Head Pressure Set Point minus 35 F (19.4 C) for 2 minutes.
The control uses the higher of the 2 Saturated Condensing
Temperature values for 30GXN,R080-160 units. For the
30GXN,R153, 163-350 units, each circuit’s fan stages are
independently controlled based on the circuit Saturated
Condensing Temperature. Refer to Table 8 for condenser fan
control information. See Fig. 9A for operational information.
With Motormaster V Control — For low-ambient operation,
the lead fan in each circuit can be equipped with the optional or
accessory Motormaster head pressure controller. If factory
installed, the controller will be configured for 4 to 20 mA control. With the Variable Head Pressure Select option set to 1 (4
to 20 mA), the MBB module calculates the required output
based on Saturated Condensing temperature, Head Pressure set
point, and a PID (proportional integral derivative) loop calculation. This 4 to 20 mA output is driven through the SCB.
Proportional, Integral, and Derivative gain parameters for
air-cooled controls are adjustable and can be found in the
SERV sub-mode under the Configuration mode. Only certified
Carrier Comfort Network technicians should perform checkout
and adjustment of the PID loop. To obtain this accessory for
field installation, order by part number 30GX-900---071, 072,
073 for a single controller package (30GXN,R080-160). Order
part number 30GX-900---074, 075, 076 for a dual controller
package (30GXN,R153, 163-350). These packages contain all
the hardware required to install this accessory. See Fig. 9B for
operational information.
Low Saturated Suction Temperature — To avoid freezing the
cooler, the control will compare the circuit Saturated Suction
temperature with a predetermined freeze point.
For water [brine] circuits, if the Saturated Suction temperature falls below 34 F (1.1 C) [the Brine Freeze Point], the unit
capacity will not increase. If the Saturated Suction temperature
falls below 28 F (–2.2 C), [the Brine Freeze Point minus 6 F
(3.3 C)], for 90 seconds, all loaders in the circuit are turned
off. If this condition continues for a total of 3 minutes, the circuit will alarm and shut down.
For Brine applications, the Brine Freeze Point (Configuration Mode, SERV sub-mode, BR.FZ) must be configured for
the freeze point of the brine solution. The control will use the
Brine Freeze Point value minus 6° F (3.3° C) as the point to
compare with the Saturated Suction Temperature. The default
for the Brine Freeze Point is 34 F (1.1 C), which means the
control will use 28 F (–2.2 C) as the freeze point. The Brine
Freeze Point is adjustable from –20 F to 34 F (–29 C to 1.1 C).
Failure to set the Brine Freeze Point correctly will cause
improper unit operation.
High Condensing Temperature Unloading — Every 10 seconds the control checks for the conditions below. Loaders will
be cycled as needed to control the saturated condensing
temperature below the configured maximum condensing
temperature. Configured maximums are 154 F (67.8 C) for
30GXN,R, 152 F (66.7 C) for 30HXA, and 122 F (50 C) for
30HXC units. If a circuit’s saturated condensing temperature is
more than 12 F (6.7 C) below the maximum condensing
temperature, the circuit capacity is not allowed to increase. If
the saturated condensing temperature is more than 2 F
(1.1 C) above the maximum condensing temperature for
60 seconds, a loader is turned off. If the saturated condensing
temperature rises to more than 5 F (2.8 C) above the maximum condensing temperature during the 60 seconds, a loader
is turned off immediately. If all the loaders were already off, the
compressor is shut down and an alarm is generated.
MOP (Maximum Operating Pressure) Override — The control monitors saturated condensing and suction temperature for
each circuit as well as differential oil pressure. Based on a
configurable maximum operating set point (saturated suction
temperature), set maximum condensing temperature, and minimum differential oil pressure, the control may reduce the
number of capacity stages being used and/or may lower the
EXD position when system pressures approach the set
parameters.
Head Pressure Control
GENERAL — The microprocessor controls the condenser fans
(30GXN,R) to maintain the saturated condensing temperature
to a configurable set point. The 30HXA condenserless units
with a 09DK condenser use a combination of factory-supplied
11
(HPCT under sub-mode OPT1) must be configured to 1 (aircooled), and Condenser Pump control must be set to 0 (CNPC
must be set to No control, Configuration mode under sub-mode
OPT1).
Low ambient head pressure control can be accomplished
with fan cycling pressure switches (09DK054-094), temperature switches (09DK044, 074-094), and Motormaster®
control. The Motormaster control requires a temperature sensor
input to control condenser fan cycling. The Motormaster V
control also requires a temperature sensor input or the 4 to
20 mA output signal from the Comfortlink™ control system.
See accessory installation instructions for further information.
The Head Pressure Control Type (HPCT under sub-mode
OPT1) may be set to control various types of head pressure
control devices. HPCT may be set to 0 (No Control), 1
(Air Cooled), 3 (Common Condenser), or 4 (Independent
Condenser).
The 30HXA chillers also support the use of a 4 to 20 mA
(2 to 10 vdc), 0 to 20 mA (0 to 10 vdc), or 20 to 0 mA (10 to
0 vdc) for fan speed control. Installing a 500-ohm 1/2 watt
resistor across the 2 output terminals of the mA signal enables
the use of the vdc signal. Set this configuration (VHPT, configuration mode under sub-mode OPT1) to 1 (4 to 20 mA or 2 to
10 vdc), 2 (0 to 20 mA or 0 to 10 vdc), or 3 (20 to 0 mA or 10
to 0 vdc) as desired depending on control type. For common
output applications (single output for both circuits), the signal
connections are made at terminal block TB2, terminals 14 and
15. For independent (one output for each circuit) applications,
the signal connections are made at terminal block TB2, terminals 14 and 15 for circuit A, and terminals 12 and 13 for
circuit B.
The control will use the higher of the 2 Saturated Condensing Temperature values for 30GXN,R080-160 units. For the
30GXN,R153, 163-350 units, each circuit’s fan stages are
independently controlled based on the circuit's Saturated
Condensing Temperature. Refer to Table 9 for condenser fan
staging information.
WATER-COOLED UNITS (30HXC) — The 30HXC chiller
can be configured to control direct acting water valves that are
controlled by a 4 to 20 mA (2 to 10 vdc) signal. A 0 to 20 mA
(0 to 10 vdc) or 20 to 0 mA (10 to 0 vdc) can also be configured. Installing a 500-ohm 1/2 watt resistor across the 2 output
terminals of the mA signal enables the use of the vdc signal.
Set this configuration (VHPT, configuration mode under
sub-mode OPT1) to 1 (4 to 20 mA or 2 to 10 vdc), 2 (0 to
20 mA or 0 to 10 vdc), or 3 (20 to 0 mA or 10 to 0 vdc) as
desired depending on valve type. Signal connections are made
at terminal block TB2, terminals 14 and 15. The control
scheme reads the saturated condensing temperature and uses a
PID (proportional integral derivative) loop to control the head
pressure. Proportional, Integral and Derivative gain parameters
for the water-cooled controls are adjustable and can be found in
the SERV sub-mode under the Configuration mode. Only certified Carrier Comfort Network technicians should perform
checkout and adjustment of the PID loop.
CONDENSERLESS UNITS (30HXA) — The 30HXA unit is
often applied with an 09DK air-cooled condenser. The remote
condenser fans are controlled by 2 relay outputs. These
connections are in the 30HXA control box. See Field Wiring
section on page 72 for wiring details. The 30HXA control must
be configured to turn the 09DK fans on and/or off. To set the
30HXA control for this configuration, Unit Type (TYPE,
Configuration mode under sub-mode UNIT) must be configured to 3 (Split System). The Head Pressure Control Type
Table 6 — Field Configured Head Pressure Control Options
UNIT
30GX
30HXC
30HXA
CONFIGURATION OPTION
DESCRIPTION
Head Pressure Control Type Method of controlling head
pressure
Fan Staging Select
Method of controlling fan staging
Variable Head Pressure
Method of controlling variable head
Select
pressure
POINT NAME
HPCT
FAN.S
VHPT
Head Pressure Control Type Method of controlling head pressure
Variable Head Pressure
Method of controlling variable head
Select
pressure
HPCT
Head Pressure Control Type Method of controlling head
pressure
HPCT
Variable Head Pressure
Select
VHPT
Method of controlling variable
head pressure
VHPT
FACTORY CONFIGURATION
Air Cooled (30GX Default, Do not modify)
See Table 7
0 = None (Default)
1 = 4 to 20 mA (Default if Motormaster FIOP is
installed.)
Set to 4 to 20 mA if Motormaster accessory is
installed.
Water Cooled (30HXC Default, Do not modify)
0=None
1 = 4 to 20 mA (*2 to 10 vdc)
2 = 0 to 20 mA (*0 to 10 vdc)
3 = 20 to 0 mA (*10 to 0 vdc)
No Control
Air Cooled (30HXA Default)
Common Condenser
Independent Condenser
0=None
1 = 4 to 20 mA (*2 to 10 vdc)
2 = 0 to 20 mA (*0 to 10 vdc)
3 = 20 to 0 mA (*10 to 0 vdc)
*A vdc signal can be generated by installing a 500-ohm 1/2-watt resistor across the 2 output terminals of the mA signal.
12
Table 7 — Fan Staging Select Configuration Settings for Air Cooled (30GXN,R) Units
UNIT 30GXN,R
COMPUTER
SOFTWARE DISPLAY
NAVIGATOR DISPLAY
080,090*
6
(1 STAGE COM)
083,093,106,108,
114,125,135*
118,128,138,
150,160*
7
(2 STAGE COM)
8
(3 STAGE COM)
153,174,
204,225*
4
(A2B1 IND)
163,178*
2
(2 STAGE IND)
249,264*
5
(A3B2 IND)
208,228
253,268,281-350*
3
(3 STAGE IND)
DESCRIPTION
1st stage compressor status and SCT set point
2nd stage common control based on highest SCT
1st stage compressor status and SCT set point
2nd and 3rd stage common control based on highest SCT
1st stage compressor status and SCT set point
2nd through 4th stage common control based on highest SCT
1st stage each circuit, compressor status
2nd stage Circuit B independent
2nd and 3rd stage Circuit A independent
1st stage each circuit, compressor status
2nd and 3rd stage each circuit independent
1st stage each circuit, compressor status
2nd stage Circuit B independent
2nd, 3rd and 4th stage Circuit A independent
1st stage each circuit, compressor status
2nd, 3rd and 4th stage each circuit independent
LEGEND
SCT — Saturated Condensing Temperature
*And associated modular sizes.
30GXN,R118, 128, 138,
150, 160*
30GXN,R083, 093, 106, 108, 114,
125, 135*
30GXN,R080, 090*
2
4
6
4
2
4
6
8
2
1
3
1
CONTROL
BOX
END
CONTROL
BOX
END
CONTROL
BOX
END
3
5
1
3
8
6
4
2
7
5
3
1
3
2
4
5
9
7
11
CONTROL
BOX
END
CONTROL
BOX
END
9
7
30GXN,R249, 264*
30GXN,R153, 174, 204, 225*
10
5
1
6
8
10
12
30GXN,R253, 268, 281-350*
16
14
12
10
8
4
6
2
CONTROL
BOX
END
15
13
11
9
7
5
1
3
30GXN,R208, 228*
30GXN,R163, 178*
12
10
8
4
6
14
2
12
10
8
4
6
2
CONTROL
BOX
END
11
9
7
5
3
CONTROL
BOX
END
13
1
11
9
*And associated modular sizes.
Fig. 8 — 30GX Condenser Fan Locations
13
7
5
3
1
30GXN,R UNITS — MOTORMASTER V CONTROL NOT INSTALLED
LEGEND
SCT — Saturated Condensing Temperature
Fig. 9A — 30GXN,R Units Head Pressure Control Without Motormaster® V Control
30GXN,R UNITS — MOTORMASTER V CONTROL INSTALLED
IS SCT GREATER
THAN HEAD
PRESSURE SET
POINT PLUS 15°F
(8.3°C)?
READ CIRCUIT
SATURATED
CONDENSING
TEMPERATURE
AND CURRENT
FAN STAGE
NO
CALCULATE NEW
PID VALUE. DOES
OUTPUT REQUIRE
MORE FANS?
YES
NO
DOES PID OUTPUT
REQUIRE LESS
FANS?
YES
YES
INCREASE
CURRENT FAN
STAGE BY ONE
INCREASE
CURRENT FAN
STAGE BY ONE
NO
DECREASE
CURRENT FAN
STAGE BY ONE
OUTPUT NEW mA
SIGNAL TO
CONTROLLER
Fig. 9B — 30GXN,R Units Head Pressure Control With Motormaster V Control
Table 8 — Control Methods and Cooling Set Points
CONTROL TYPE
(CTRL)
Switch
7 Day Occ
Occupancy
CCN
OCCUPANCY
STATE
Occupied
Unoccupied
Occupied
Unoccupied
Occupied
Unoccupied
Occupied
Unoccupied
Single
ON,CSP1
ON,CSP1
ON,CSP1
OFF
ON,CSP1
OFF
ON,CSP1
ON,CSP1
COOLING SET POINT SELECT (CLSP)
Dual, Switch
Dual, 7 day
Dual, CCN Occ
ON*
ON,CSP1
ON,CSP1
ON*
ON,CSP2
ON,CSP2
ON*
Illegal
Illegal
OFF
Illegal
Illegal
ON*
Illegal
Illegal
OFF
Illegal
Illegal
ON*
ON,CSP1
ON,CSP1
ON*
ON,CSP2
ON,CSP2
*Dual set point switch input used. CSP1 used when switch input is open. CSP2 used when switch input is closed.
†Cooling set point determined from 4 to 20 mA input to Energy Management Module (EMM) to terminals TB6-3,5.
14
4 to 20 mA†
ON
ON
ON
OFF
ON
OFF
ON
ON
Table 9 — 30GXN,R080-350 Condenser Fan Staging (Main Base Board Controlled)
30GXN,R UNIT SIZE
FAN TYPE
Standard
080, 090
High Static
Standard
083, 093, 106-114, 125, 135
High Static
Standard
118, 128, 138, 150, 160
High Static
Standard
153, 174, 204, 225
High Static
Standard
163, 178
High Static
Standard
249, 264
High Static
Standard
208, 228
High Static
Comp.
FC
NAVIGATOR OUTPUT
POINT NAME
Fan 1
Fan 2
Fan 1
Fan 2
Fan 1
Fan 2
Fan 3
Fan 1
Fan 2
Fan 3
Fan 1
Fan 2
Fan 3
Fan 3
Fan 1
Fan 2
Fan 3
Fan 3
Comp. B1 contactor*
Fan 2
Fan 3
Comp. A1/A2 contactor*
Fan 1
Comp. B1 contactor*
Fan 2
Fan 3
Comp. A1/A2 contactor*
Fan 1
Comp. B1 contactor*
Fan 2
Fan 4
Comp. A1 contactor*
Fan 1
Fan 3
Comp. B1 contactor*
Fan 2
Fan 4
Comp. A1 contactor*
Fan 1
Fan 3
Comp. B1 contactor*
Fan 2
Fan 1
Comp. A1/A2 contactor*
Fan 3
Fan 3
Comp. B1 contactor*
Fan 2
Fan 1
Comp. A1/A2 contactor*
Fan 3
Fan 3
Comp. B1 contactor*
Fan 1
Fan 2
Fan 4
Fan 3
Comp. A1/A2 contactor*
Fan 3
Fan 3
Comp. B1 contactor*
Fan 1
Fan 2
Fan 4
Fan 3
Comp. A1/A2 contactor*
Fan 3
Fan 3
LEGEND
— Compressor
— Fan Contactor
FAN CONTACTOR
FANS CONTROLLED
FC-1
FC-2
FC-1, 1A
FC-2, 2A
FC-1
FC-2
FC-3
FC-1, 1A
FC-2, 2A
FC-3, 3A
FC-1
FC-2
FC-3
FC-4
FC-1, 1A
FC-2, 2A
FC-3, 3A
FC-4, 4A
FC-1
FC-2
FC-3
FC-4
FC-5
FC-1, 1A
FC-2, 2A
FC-3, 3A
FC-4, 4A
FC-5, 5A
FC-1
FC-2
FC-3
FC-4
FC-5
FC-6
FC-1, 1A
FC-2, 2A
FC-3, 3A
FC-4, 4A
FC-5, 5A
FC-6, 6A
FC-1
FC-2
FC-3
FC-4
FC-5
FC-6
FC-1, 1A
FC-2, 2A
FC-3, 3A
FC-4, 4A
FC-5, 5A
FC-6, 6A
FC-1
FC-2
FC-3
FC-4
FC-5
FC-6
FC-7
FC-8
FC-1
FC-2, 2A
FC-3
FC-4, 4A
FC-5, 5A
FC-6, 6A
FC-7, 7A
FC-8, 8A
1, 2
3, 4
1, 2
3, 4
1, 2
3, 4
5, 6
1, 2
3, 4
5, 6
1, 2
3, 4
5, 6
7, 8
1, 2
3, 4
5, 6
7, 8
1, 2
3, 4
5, 6
7, 8
9, 10
1, 2
3, 4
5, 6
7, 8
9, 10
1, 2
3, 4
5, 6
7, 8
9, 10
11, 12
1, 2
3, 4
5, 6
7, 8
9, 10
11, 12
1, 2
3, 4
5, 6
7, 8
9, 10
11, 12
1, 2
3, 4
5, 6
7, 8
9, 10
11, 12
1
2, 4
3
5, 7
6, 8
9, 10
11, 12
13, 14
1
2, 4
3
5, 7
6, 8
9, 10
11, 12
13, 14
*Proper rotation of these fans to be checked when compressor(s) is running.
See Fig. 8 for condenser fan locations when viewing from the control box
end.
NOTE: For 30GXN,R153, 163-350 units, fan relays Fan 1 and Fan 3 energize
Circuit A fans. Fan relays Fan 2 and Fan 4 energize Circuit B fans.
15
Table 9 — 30GXN,R080-350 Condenser Fan Staging (Main Base Board Controlled) (cont)
30GXN,R UNIT SIZE
FAN TYPE
Standard
253, 268
High Static
Standard
281-350
High Static
NAVIGATOR OUTPUT
POINT NAME
Comp. B1 contactor*
Fan 1
Fan 2
Fan 4
Fan 3
Comp. A1/A2 contactor*
Fan 3
Fan 3
Fan 1
Comp. B1 contactor*
Fan 1
Fan 2
Fan 4
Fan 3
Comp. A1/A2 contactor*
Fan 3
Fan 3
Fan 1
Comp. B1/B2 contactor*
Fan 2
Fan 4
Fan 4
Fan 1
Comp. A1/A2 contactor*
Fan 3
Fan 3
Comp. B1/B2 contactor*
Fan 2
Fan 4
Fan 4
Fan 1
Comp. A1/A2 contactor*
Fan 3
Fan 3
FAN CONTACTOR
FANS CONTROLLED
FC-1
FC-2
FC-3
FC-4
FC-5
FC-6
FC-7
FC-8
FC-9
FC-1
FC-2, 2A
FC-3
FC-4, 4A
FC-5, 5A
FC-6, 6A
FC-7, 7A
FC-8, 8A
FC-9, 9A
FC-1
FC-2
FC-3
FC-4
FC-5
FC-6
FC-7
FC-8
FC-1, 1A
FC-2, 2A
FC-3, 3A
FC-4, 4A
FC-5, 5A
FC-6, 6A
FC-7, 7A
FC-8, 8A
1
2,4
3
5,7
6,8
9,10
11,12
13,14
15,16
1
2,4
3
5,7
6,8
9,10
11,12
13,14
15,16
1,2
3,4
5,6
7,8
9,10
11,12
13,14
15,16
1,2
3,4
5,6
7,8
9,10
11,12
13,14
15,16
LEGEND
Comp. — Compressor
FC
— Fan Contactor
*Proper rotation of these fans to be checked when compressor(s) is running.
See Fig. 8 for condenser fan locations when viewing from the control box
end.
NOTE: For 30GXN,R153, 163-350 units, fan relays Fan 1 and Fan 3 energize
Circuit A fans. Fan relays Fan 2 and Fan 4 energize Circuit B fans.
09DK AIR-COOLED CONDENSERS
09DK044 Units — The 09DK044 units have accessory provision for fully automatic intermediate-season head pressure
control through condenser fan cycling. Fan number 2 and 3
cycling is controlled by outdoor-air temperature through air
temperature switches (ATS) 1 and 2.
The air temperature switches are located in the lower
divider panel underneath the coil header. The sensing element
is exposed to air entering the no. 1 fan compartment through a
hole in the panel. Fan no. 1 is non-cycling.
The air temperature switch controls the fans as shown in
Table 10.
09DK054-094 — The capacity of an air-cooled condenser
increases with increased temperature difference (defined as
saturated condensing temperature minus entering outdoor-air
temperature) and decreases with decreased temperature difference. A drop in entering outdoor-air temperature results in a
lower saturated condensing temperature. When outdoor-air
temperature drops below the minimum temperature for standard units, additional head pressure control is required.
Model 09DK units have fully automatic intermediateseason head pressure control through condenser fan cycling
using electromechanical fan cycling controls. Standard head
pressure controls regulate the 100 and 50/50% condenser
capacity applications. Head pressure can also be controlled
by fan cycling controls supplemented by the accessory
Motormaster® V solid-state head pressure control. See Motormaster V installation instructions for more information.
In the standard control scheme, fans 1 and 2 are on when
there is a call for cooling from the respective coil circuits. Fans
1 and 2 are non-cycling. On 054 and 064 units, fans 3 and 4 are
controlled by using a fan cycling pressure switch on each of the
primary coil circuits in response to condensing pressure. Fan
cycling switches must be replaced with the switches supplied
in the control box of the 30HXA chiller.
The fan cycling pressure switch controls the fans as follows:
Fans 3 and 4 are on above 185  10 psig (1276  69 kPa) and
off below 97  10 psig (669  69 kPa). If pressure is rising between 97 psig (669 kPa) and 185 psig (1276 kPa), fans 3 and 4
are off. If pressure is falling from 185 psig (1276 kPa) to
97 psig (669 kPa) fans 3 and 4 are on.
Table 10 — Air Temperature Switch Control
(09DK044 Units)
FAN
FAN SWITCH
ON
FAN 2
OFF
ON
FAN 3
OFF
TEMPERATURE
Above 65  3 F (18.3 1.7 C)
Between 55 and 65 F (12.8 and 18.3 C)
and temperature falling
Below 55 3 F (12.8 1.7 C)
Between 55 and 65 F (12.8 and 18.3 C)
and temperature rising
Above 80 3 F (26.7 1.7 C)
Between 70 and 80 F (21.1 and 26.7 C)
and temperature falling
Below 70 3 F (21.1 1.7 C)
Between 70 and 80 F (21.1 and 26.7 C)
and temperature rising
16
REMOTE position. The unit can be enabled and disabled by
this action or all control methods.
7-DAY SCHEDULE — Unit is started and stopped in accordance with the schedule configured under Time Clock mode.
This schedule can be configured from the Navigator or from
CCN.
OCCUPANCY — Unit is started and stopped in accordance
with the local occupancy schedule accessible only from CCN.
Schedule Number in Table SCHEDOVR must be configured
to 1 to utilize the local occupancy schedule, or 65-99 to utilize
a global schedule. If the Schedule Number is set to 0 the unit
will operate in a continuous 24-hr Occupied mode.
CCN — Unit is started and stopped by communication over
the CCN bus. The CHIL_S_S point in the A_UNIT table is
provided for this purpose.
Table 8 illustrates how the control method and cooling
setpoint select variables direct the operation of the chiller and
the set point to which it controls. The illustration also shows
the ON/OFF state of the machine for the given combinations.
The 09DK054-094 condensers are supplied with fan cycling
pressure switches suitable for use with R-22 refrigerant. Fan
cycling pressure switches that are compatible with R-134a
refrigerant pressures are shipped with the 30HXA chillers.
These fan cycling pressure switches must be installed in place
of the 09DK factory-installed switches before charging to
ensure proper head pressure control.
The air temperature switch controls the fans as follows: On
the 074-094 condensers, below 70 ± 3 F (21.1 ± 1.7 C) outdoor
ambient, fans 5 and 6 are off; above 80 ± 3 F (26.7 ± 1.7 C) fans
5 and 6 are on. Between 70 F (21.1 C) and 80 F (26.7 C), whether fans 5 and 6 are on or off depends on whether temperature is
rising or falling. If the temperature is rising from 70 F (21.1 C)
to 80 F (26.7 C), fans 5 and 6 are off. If the temperature is falling from 80 F (26.7 C) to 70 F (21.1 C), fans 5 and 6 are on.
09AZ AIR-COOLED CONDENSERS — The 09AZV091182 units are designed to operate specifically with 30HXA
chillers, using R-134a refrigerant. Units with 8 fans have
2 direct controlled (applied to optional variable speed), 4 refrigerant pressure and 2 ambient temperature controlled fans. Units
with 10 fans have 2 direct controlled (applied to optional variable speed), 4 refrigerant pressure and 4 ambient temperature
controlled fans. Units with 12 fans have 2 direct controlled
(applied to optional variable speed), 6 refrigerant pressure and
4 ambient temperature controlled fans. Field adjust 09AZ
switch settings as follows:
PRESSURE
Cut in 175 psi
Cut out 145 psi
Cooling Set Point Select
SINGLE — Unit operation is based on Cooling Setpoint 1
(CSP1).
DUAL SWITCH — Unit operation is based on Cooling
Setpoint 1 (CSP.1) when the Dual Setpoint switch contacts are
open and Cooling Setpoint 2 (CSP.2) when they are closed.
DUAL 7 DAY — Unit operation is based on Cooling Setpoint
1 (CSP.1) during the occupied mode and Cool Setpoint 2
(CSP.2) during the unoccupied mode as configured under Time
Clock mode. Control method must be configured for Switch.
DUAL CCN OCCUPIED — Unit operation is based on
Cooling Setpoint 1 (CSP.1) during the Occupied mode and
Cooling Setpoint 2 (CSP.2) during the Unoccupied mode as
configured under the local occupancy schedule accessible only
from CCN. Schedule Number in Table SCHEDOVR must be
configured to 1. If the Schedule Number is set to 0 the unit will
operate in a continuous 24-hr Occupied mode. Control method
must be configured for Switch.
4 TO 20 mA INPUT — Unit operation is based on an external 4 to 20 mA signal input to the Energy Management Module
(EMM).
AMBIENT
Cut in 70 F
Cut out 60 F
OPERATION SEQUENCE — All condenser fans are allowed to operate once a call for cooling comes from the chiller.
Direct fans will operate while refrigerant pressure and ambient
temperature control fans maintain refrigerant head pressure
based on existing refrigerant pressure and ambient temperature
conditions. Optional variable speed control will ramp direct fan
motor speed for improved low ambient performance.
VARIABLE SPEED FAN CONTROL — All units, when
ordered with fan head pressure control are furnished with the
number 1 condenser motor as a single-phase motor for use
with head pressure control. The optional factory-mounted
motor head pressure control contains a fan head pressure
control device activated by a pressure sensor. The kit controls
condenser-fan motor speed in response to the saturated
condensing pressure.
ADJUSTING PID ROUTINES — The 30GXN,R, 30HXA
and 30HXC head pressure control routines use PID (proportional integral derivative) loops to maintain a user-configurable
head pressure set point. Gain defaults values are located in the
SERV sub-mode under the Configuration mode (items H.PGN,
H.IGN and H.DGN). The control calculates a new fan speed
(30GXN,R) or water valve position (30HXC) every 5 seconds
based on these gain values and an error term equal to saturated
condensing temperature minus head pressure set point. If the
control routine is not responding fast enough to large changes
(circuit starting, for example), increase the proportional term.
When the routine is making too great a change to valve position or fan speed, decrease the proportional term. To minimize
hunting, keep the integral term positive and as low as possible.
This value is used to control “droop,” which is common in
master/submaster control schemes. The default for the derivative term is zero. The value should not need to be changed.
For more information on tuning PID loops, consult
the Comfort Controller Installation manual, catalog number
808-890. Follow the instructions under Tuning Control loops.
Ice Mode — When Ice Mode is enabled Cooling Setpoint
Select must be set to Dual Switch, Dual 7 day or Dual CCN
Occupied and the Energy Management Module (EMM) must
be installed. Unit operation is based on Cooling Setpoint 1
(CSP.1) during the Occupied mode, Ice Setpoint (CSP.3) during the Unoccupied mode with the Ice Done contacts open and
Cooling Setpoint 2 (CSP.2) during the Unoccupied mode with
the Ice Done contacts closed. These 3 set points can be utilized
to develop your specific control strategy.
Cooler and Condenser (30HXC) Pump Control — The 30GXN,R and 30HX chillers can be configured
for cooler and condenser (30HXC) pump control. Inputs for a
cooler pump interlock and condenser flow switch or interlock
are provided.
COOLER PUMP CONTROL (CPC, Configuration Mode/
sub-mode OPT1) — Proper configuration of the cooler pump
control is required to prevent possible cooler freeze-up. A
cooler flow switch is factory installed to prevent operation
without flow through the cooler. It is also recommended that
the chiller be interlocked with the chiller water pump starter to
provide additional protection. See page 72 of the Field Wiring
section for proper connection of the cooler pump interlock.
The factory default setting for cooler pump control is “OFF.”
It is recommended for all chillers that the cooler pump control
be utilized unless the chilled water pump runs continuously or
the chilled water system contains a suitable antifreeze solution.
Control Methods
SWITCH — Unit is started and stopped manually by switching the ENABLE/OFF/REMOTE CONTACT switch from
OFF to ENABLE or by external contacts with the switch in the
17
When there is chilled water flow, but the flow is inadequate
to close the switch and allow unit operation, one red LED will
illuminate. A red LED can also indicate inoperative pump(s),
closed valve, clogged strainer or air in the system.
When the first green LED is illuminated, the switch is
closed and the unit will start and run. Various conditions can
cause variations in flow and allow the switch to open and cause
a “nuisance trip”. Greater constant flow will help reduce
nuisance tips.
Measure the pressure drop across the cooler and use
Appendix E to determine the cooler flow rate then determine if
the flow rate is adequate for the application. A green LED does
not mean minimum flow requirements have been met.
When the cooler pump control is “ON,” the cooler pump relay
will be energized when the chiller enters an “ON” mode (i.e.,
ON LOCAL, ON TIME, ON CCN). The cooler pump relay
will remain energized for 30 seconds after all compressors stop
due to off command. In the event a freeze protection alarm is
generated, the cooler pump relay will be energized whether
cooler pump control is configured “ON” or “OFF.” The cooler
pump relay is also energized anytime a compressor is started as
well as when certain alarms are generated. The cooler pump relay should be used as an override to the external pump control if
cooler pump control is not utilized.
IMPORTANT: If the cooler pump control relay output is
not wired to control or override the operation of the
chilled water pump an OFF DELAY of 10 minutes must
be provided after the chiller is disabled to maintain
cooler water flow during the pump down period.
Cooler Heater Control — Factory-installed cooler heaters can be ordered for the 30GXN,R chillers. The number of
heaters depends on the size of the machine. The control system
operates the heaters in response to the saturated suction
temperature of each circuits as well as Entering and Leaving
Water Temperature.
The cooler heater will be energized if the unit is OFF (no
mechanical cooling) and either of the following two conditions
has been met:
• The Saturated Suction Temperature in either circuit is
less than BR.FZ Brine Freeze Point (Configuration
Mode, Sub-mode SERV), and the unit has been off for
more than 30 seconds.
• Entering or Leaving Water Temperature is less than
BR.FZ + 3° F (1.7° C). The heaters will remain on until
both Entering and Leaving Water Temperatures equal or
exceed 120° F (48.9° C). The heaters will energize again
when both water temperatures are below 110° F
(43.3° C). Cooler flow must be established in order to
de-energize the cooler heaters.
• If the Entering or Leaving Water Thermistor has failed,
the heaters will stay on.
If after 15 minutes of operation, the Saturated Suction
Temperature for both circuits is not greater than BR.FZ + 10° F
(5.6° C), the Cooler Pump will be commanded ON in attempt
to increase the water temperature.
The cooler heaters will be deenergized if the unit is ON
(mechanical cooling is ON) or if the Saturated Suction Temperature for both circuits is greater than BR.FZ + 10° F (5.6° C)
for at least 10 minutes.
30HXC brine applications below 32 F (0° C) leaving brine
temperature require cooler pump control. To reduce the possibility of condenser freeze-up the cooler pump must be stopped
or isolation valve closed in the event of loss of condenser water
flow.
If cooler pump control is turned “OFF” or “ON” and the
chilled water flow switch/interlock does not close within 5 minutes after the unit is enabled and in an “ON” mode, alarm A200
will be generated. If cooler pump control is turned “ON” and
the chilled water flow switch/interlock is closed when the unit
is enabled and enters an “ON” mode alarm A202 will be generated. Alarm A201 will be generated whenever the cooler pump
interlock is open for at least 10 seconds during chiller operation.
CONDENSER PUMP CONTROL (CNP.I AND CNPC,
Configuration Mode/sub-mode OPT1) — Factory defaults for
both condenser pump control and condenser flow switch are
set to “NO CONTROL” and “OFF,” respectively. The
condenser pump can be controlled in one of two ways: In the
first method, (CNPC set to “ON WHEN OCCUPIED”) the
pump can be controlled like the cooler pump. It is turned on
whenever the machine is in an “ON” mode and turned off
30 seconds after all compressors stop and the machine is in an
“OFF” mode. The second method (CNPC set to “ON WITH
COMPRESSORS”), will energize the condenser pump output
when the first compressor is started and deenergize the output
30 seconds after the last compressor stops.
When configured for a condenser flow switch/interlock
(CNP.I set to “ON”), an alarm A159 is generated if the input
does not close within one minute after the machine enters an
“ON” mode, or within one minute after the condenser pump
relay is energized when configured “ON”. Alarm A159 is also
generated if the flow switch/interlock opens for more than
10 seconds during chiller operation.
30HXC brine applications below 32 F (0° C) leaving brine
temperature require condenser pump control to be configured
to “ON WHEN OCCUPIED” and condenser pump interlock to
be “ON”. A condenser water flow switch must be installed and
wired to TB2 terminals 5 and 6. The condenser pump output
remains energized for 30 minutes after the Enable/Off/Remote
Contact switch is placed in the “OFF” position or the Remote
Contacts are opened allowing refrigerant pressure equalization.
BRN.L (Configuration Mode, sub-mode SLCT) must be
configured to YES if Brine FIOP is installed. This will energize
liquid line solenoid valves on brine units when the condenser
pump is “ON” and when the compressors are “OFF”. Liquid
line solenoids are included as part of the Brine FIOP.
Oil Heater Control (30GXN,R Units Only) —
Standard feature that controls oil temperature based on the discharge gas temperature (DGT) thermistor. Heaters turn on
when DGT < 95 F (35 C) and turn off when DGT > 100 F
(37.8 C) and compressors are off. The heater is deenergized if
the oil level switch is open.
Navigator Display Module Usage (See Fig. 10
and Tables 11-24B) — The Navigator module provides
a mobile user interface to the ComfortLink™ control system.
The display has up and down arrow keys, an ESCAPE key, and an
ENTER
key. These keys are used to navigate through the different
levels of the display structure. See Table 11. Press the ESCAPE
key until ‘Select a Menu Item’ is displayed to move through
the top 11 mode levels indicated by LEDs on the left side of the
display.
Pressing the ESCAPE and ENTER keys simultaneously will put
the Navigator into expanded text mode where full meaning of
all sub-modes, items and their values can be displayed. Pressing the ESCAPE and ENTER keys when the display says ‘Select a
Menu Item’ (Mode LED level) will return the Navigator to its
default menu of rotating display items (those items in the
VIEW sub-mode under the Run Status mode). In addition, the
Flow Sensor — The factory-installed flow sensor/switch
should not require adjustment.
Proper operation of this sensor/switch is necessary to allow
the unit to operate and provide running freeze protection for the
unit. When power is supplied to the switch, the amber LED in
the center of the display will be illuminated.
18
Co m
NA
T IM E
EWT
LW T
SETP
MO
fort
VIG
Two items, OAT Outside Air Temperature (Temperature
Mode, Sub-mode UNIT) and SPT Space Temperature
(Temperature Mode, Sub-mode UNIT) can be forced to a value
at the Navigator. If one of these two points has been forced, a
flashing “f” will appear next to the value indicating a forced
value. To remove the force, select the item and press the ENTER
key so that the value is flashing. Press the up and down arrow
keys simultaneously and the force will be removed.
Li n k
ATO
R
12.
54. 58
44. 6 F
4 4 . 01 F
F
DE
Run
Statu
s
Servi
ce Te
st
Temp
eratur
es
Pres
sures
Setpo
ints
Inputs
Al ar
m St
atu
s
Outpu
ts
Confi
gurat
ion
Time
Cloc
k
Opera
ting
Mode
Alarm
s
s
ENT
Service Test (See Table 13) — Both main power and
ESC
control circuit power must be on. The Service Test function
should be used to verify proper operation of the compressors,
loaders, pumps, solenoids, fans, heaters, etc. To access the
Service Test mode, the Enable/Off/Remote Contact switch
must be in the Off position. Use the display keys to enter the
Service Test mode and display ‘TEST OFF’. Press the ENTER
key and ‘Off’ will flash (Enter the password if required). Use
either arrow key to change the ‘Off’ to ‘On’ and press ENTER .
Switch the Enable/Off/Remote Contact switch to the Enable
position. Use the arrow keys to select either sub-mode OUTS
or COMP. Test the expansion valves, oil pumps, fans, cooler
heaters, cooler/condenser pump relays, remote alarm relay,
head pressure control, and compressor oil and motor cooling
solenoids under the OUTS sub-mode. Note that condenser-fan
motors are NOT started during VH.PA or VH.PB test on
30GXN,R units with Motormaster® control. Measure 4 to
20 mA dc output using meter in series with violet or pink wire
to controller. Refer to the Field Wiring section. These discrete
outputs are then turned off if there is no keypad activity for
10 minutes. Test the compressors, loaders, minimum load
valves and oil heaters under the COMP sub-mode. Compressor
loaders, minimum load valve and oil heaters can be tested with
compressors on or off. All compressor outputs can be turned
on, but the control will limit the rate by staging one compressor
per minute. The relays under the COMP sub-mode will stay on
for 10 minutes if there is no keypad activity. Compressors will
stay on until they are turned off by the operator. The Service
Test mode will remain enabled as long as there is more than
one compressor turned on. All safeties are monitored during
this test and will turn a compressor, circuit or motor off if necessary. Any other mode or sub-mode can be viewed or changed
during the TEST mode. The STAT item (Run Status mode under sub-mode VIEW) will display ‘SERVICE TEST’ as long
as the Service mode is enabled. The TEST sub-mode value
must be changed back to OFF before the chiller can be
switched to Enable or Remote contact for normal operation.
ER
Fig. 10 — Navigator Module
password will be disabled requiring that it be entered again
before changes can be made to password protected items.
The Service Test function should be used to verify proper
protected items. Press the ESCAPE key to exit out of the expanded
text mode.
NOTE: When the LANG variable is changed, all appropriate
display expansions will immediately change to the new
language. No power-off or control reset is required when
reconfiguring languages.
When a specific item is located, the item name appears on
the left of the display, the value will appear near the middle of
the display and the units (if any) will appear on the far right of
the display. Press the ENTER key at a changeable item and the
value will begin to flash. Items in the Configuration and Service Test modes are password protected. The password can be
changed utilizing the Navigator or through CCN devices such
as ComfortWORKS®, ComfortVIEW™ and Service Tool.
The words ‘Enter Password’ will be displayed when required,
with the default password also being displayed. Use the ENTER
and arrow keys to enter the 4 digits of the password. The
default password is 1111. Use the following procedure to
change the password:
1. Enter the correct password under PASS, Service
Password (Configuration Mode, Sub-mode DISP).
2. Change PAS.E Password Enable (Configuration Mode,
Sub-mode DISP) to DSBL.
3. Return to the PASS, Service Password, and change the
password to the desired value. For example, 2222. Once
changed, the screen will show the new value, 2222.
4. Return to the PAS.E Password Enable, and change the
value to ENBL.
The password has been changed. If the password is
required, the machine will show the default 1111 as the
password. Use the up or down arrow keys to change the value
to the correct password.
Changing item values or testing outputs is accomplished in
the same manner. Locate and display the desired item. Press
ENTER so that the item value flashes. Use the arrow keys to
change the value or state of a item and press the ENTER key to
accept it. Press the ESCAPE key to return to the next higher level
of structure. Repeat the process as required for other items. See
Tables 12-25 for further details.
Configuring and Operating Dual Chiller Control (See Table 24A and 24B) — The dual chiller
routine is available for the control of two units supplying
chilled fluid on a common loop. This control is designed for either series or parallel fluid flow (PARA, Configuration mode
under sub-mode RSET) arrangements. One chiller must be
configured as the master chiller, the other as the slave chiller.
For series fluid flow, the master chiller is installed so that it receives entering fluid from the slave chiller and its leaving fluid
supplies the load. See Fig. 11. For parallel flow applications, an
additional leaving water temperature thermistor (Dual Chiller
LWT) must be installed as shown in Fig. 12 and 13 and connected to the master chiller. Refer to Thermistors section for
sensor wiring.
19
RETURN
FLUID
SLAVE
CHILLER
MASTER
CHILLER
point of the slave chiller. The master chiller will also split
demand limiting function appropriately between the two
chillers, if demand limiting is enabled.
The master chiller is now configured for dual chiller operation. To configure the slave chiller, only the LLEN, PARA and
MSSL variables need to be set. Enable the Lead/Lag chiller
variable (LLEN) as shown in Tables 24A and 24B. Similarly,
set the Master/Slave Select variable (MSSL) to SLVE. The parallel variable (PARA) must be configured the same as the
master chiller. The slave chiller does not use the variables
LLBL, LLBD and LLDY.
It is recommended to set the cooling set points to the same
setting on both Master and Slave chillers for series flow
(Duplex) applications. If outdoor air reset is required the
outdoor air thermistor must be connected to the Slave chiller
(TB5 term. 7 and 8). Outdoor Air Broadcast (BCST, OAT.B)
must be configured “ON”. Remote contacts should be connected to both Master and Slave to control unit operation. Optional
control inputs and Energy Management Module (EMM)
should be connected to the Master chiller.
LEAVING
FLUID
Fig. 11 — Dual Chiller Piping Arrangement
(Series Fluid Flow)
RETURN
FLUID
THERMISTOR
WIRING*
LEAVING
FLUID
MASTER
CHILLER
SLAVE
CHILLER
INSTALL DUAL CHILLER LWT
LEAVING FLUID TEMPERATURE
THERMISTOR (T9) HERE
* Depending on piping sizes, use either:
• HH79NZ014 sensor/10HB50106801 well (3-in. sensor/well)
• HH79NZ029 sensor/10HB50106802 well (4-in. sensor/well)
Fig. 12 — Dual Chiller Thermistor Location
Parallel Fluid Flow
DIMENSIONS in. (mm)
A
B
3.10 (78.7)
1.55 (39.4)
4.10 (104.1)
1.28 (32.5)
PART
NUMBER
10HB50106801
10HB50106802
To configure the two chillers for operation, follow the
example shown in Tables 24A and 24B. The master chiller will
be configured with a slave chiller at address 2. Also in this example, the master chiller will be configured to use Lead/Lag
Balance to even out the chiller runtimes weekly. The Lag Start
Delay feature will be set to 10 minutes. The chillers will be
configured for parallel fluid flow. The master and slave chillers
cannot have the same CCN address (CCNA, Configuration
mode under OPT2). In addition, the chillers must be connected
together on the same CCN bus. Connections can be made to
the CCN screw terminals on TB3 in both chillers. The master
chiller will determine which chiller will be Lead and which
will be Lag. The master chiller controls the slave chiller by
forcing the slave chiller ON and OFF, and forcing the control
A
0.505/0.495
0.61
DIA
B
1/4 N.P.T.
6” MINIMUM
CLEARANCE FOR
THERMISTOR
REMOVAL
Fig. 13 — Dual Leaving Water Thermistor Well
Table 11 — Navigator Display Menu Structure
RUN
STATUS
Auto
Display
(VIEW)
SERVICE TEMPERATURES
TEST
Manual
Unit
Mode
Temperatures
On/Off
(UNIT)
(TEST)
Machine
Ckt A/B
Ckt A
Hours/Starts
Outputs
Temperatures
(RUN)
(OUTS)
(CIR.A)
Compressor Compressor
Ckt B
Run Hours
Tests
Temperatures
(HOUR)
(COMP)
(CIR.B)
PRESSURES
Ckt A
Pressures
(PRC.A)
Ckt B
Pressures
(PRC.B)
SET
POINTS
Cooling
(COOL)
INPUTS
OUTPUTS
CONFIGURATION
Unit
Discrete
(GEN.I)
Unit
Discrete
(GEN.O)
Display
(DISP)
TIME
CLOCK
Unit Time
(TIME)
Heating
(HEAT)
Ckt A/B
(CRCT)
Ckt A
(CIR.A)
Machine
(UNIT)
Unit Date
(DATE)
Head
Pressure
(HEAD)
Unit
Analog
(4-20)
Ckt B
(CIR.B)
Options 1
(OPT1)
Daylight
Savings
Time
(DST)
Schedule
(SCHD)
Compressor
Starts
(STRT)
Software
Version
(VERS)
Options 2
(OPT2)
Temperature
Reset
(RSET)
Set Point
Select
(SLCT)
Service
Configuration
(SERV)
Broadcast
Configuration
(BCST)
LEGEND
Ckt — Circuit
20
OPERATING
MODES
Modes
(MODE)
ALARMS
Current
(CRNT)
Reset
Alarms
(RCRN)
Alarm
History
(HIST)
Table 12 — Configuration Mode and Sub-Mode Directory
SUBMODE
DISP
UNIT
KEYPAD
ENTRY
ENTER
ENTER
ITEM
DISPLAY
TEST
ON/OFF
ITEM
EXPANSION
TEST DISPLAY LEDs
METR
ON/OFF
METRIC DISPLAY
LANG
X
LANGUAGE SELECTION
PAS.E
ENBL/DSBL
PASSWORD ENABLE
PASS
XXXX
SERVICE PASSWORD
TYPE
X
UNIT TYPE
COMMENT
See Backlight and Contrast adjustment in
Tables 21 and 22.
Off = English
On = Metric
Default: English
English
Espanol
Francais
Portuguese
Default: 1111
Air Cooled (GXN,R)
Water Cooled (HXC)
Split (HXA)
Heat Machine
Heat Reclaim
TONS
XXX
UNIT SIZE
CAP.A
XXX %
CIRCUIT A % CAPACITY
CMP.A
X
NUMBER CIRC A COMPRESSOR
CMP.B
X
NUMBER CIRC B COMPRESSOR
DIS.S
XX.X F
DISCHARGE SUPER SETPOINT
FAN.S
X
FAN STAGING SELECT
ENTER
CM.A1
XXX AMPS
COMPR. A1 MUST TRIP AMPS
Verify with Appendix A
ENTER
CM.A2
XXX AMPS
COMPR. A2 MUST TRIP AMPS
Verify with Appendix A
ENTER
CM.B1
XXX AMPS
COMPR. B1 MUST TRIP AMPS
Verify with Appendix A
ENTER
CM.B2
XXX AMPS
COMPR. B2 MUST TRIP AMPS
Verify with Appendix A
21
30GXN,R
080, 083, 135, 138 = 54
090, 093, 108, 114, 125, 128, 153 = 59
106 = 63
150 (60 Hz) = 41
160 = 45
174, 178, 281-350 = 50
204 = 64
225 = 61
118, 163 = 55
249, 253 = 71
208 = 70
264, 268 = 67
228 = 72
30HXA,C
076, 186 = 50
086, 126 = 54
096, 116, 136, 161 = 59
106, 246 = 63
146 = 55
171 = 45
206 = 57
261 = 65
271 = 67
HXA,C076-186 = 1
HXA,C206-271 = 2
GXN,R080-178 = 1
GXN,R204-350 = 2
HXA,C076-271 = 1
GXN,R080-268 = 1
GXN,R281-350 = 2
Default: 22° F DISCHARGE SUPERHEAT
None (30HXA, 30HXC)
1 STAGE IND
2 STAGE IND (30GXN,R163, 178)
3 STAGE IND (30GXN,R281-350, 208, 228,
253, 268)
A2B1 IND (30GXN,R153, 174, 204, 225)
A3B2 IND (30GXN,R249, 264)
1 STAGE COM (30GXN,R080, 090)
2 STAGE COM (30GXN,R083, 093, 106, 108, 114,
125, 135)
3 STAGE COM (30GXN,R118, 128, 138, 150, 160)
Table 12  Configuration Mode and Sub-Mode Directory (cont)
SUBMODE
OPT1
OPT2
KEYPAD
ENTRY
ENTER
ENTER
ITEM
DISPLAY
FLUD
X
ITEM
EXPANSION
COOLER FLUID
MLVS
YES/NO
MIN LOAD VALVE SELCT
HPCT
X
HEAD PRESS CONTROL TYPE
VHPT
X
VAR HEAD PRESSURE SELECT
PRTS
YES/NO
PRESSURE TRANSDUCERS
COMMENT
Default: Water
Water
Medium Temperature Brine
Low Temperature Brine (30HX only)
Minimum Load Valve
No Control
Air Cooled (30GXN,R, 30HXA default)
Water Cooled (30HXC default)
Common Cond (30HXA Common Condenser)
Ind Cond (30HXA Independent Condenser)
None (30HX, 30GX No Motormaster)
4-20 mA (2-10 vdc)(30GX with Motormaster)
0-20 mA (0-10 vdc)
20-0 mA (10-0 vdc)
Default: Yes
CPC
ON/OFF
COOLER PUMP CONTROL
CNP.I
ON/OFF
CONDENSER PUMP INTERLOCK
CNPC
X
CONDENSER PUMP CONTROL
Default: Off
(Does not require condenser pump control)
Default: No Control
No Control
On when occupied
On with compressor(s)
Default: Off
CWT.S
YES/NO
CONDENSER FLUID SENSORS
Default: No
EMM
YES/NO
EMM MODULE INSTALLED
CTRL
X
CONTROL METHOD
CCNA
XXX
CCN ADDRESS
CCNB
XXX
CCN BUS NUMBER
BAUD
X
CCN BAUD RATE
LOAD
X
LOADING SEQUENCE SELECT
LLCS
X
LEAD/LAG SEQUENCE SELECT
CP.SQ
X
COMPRESSOR SEQUENCE
LCWT
XX.X F
HIGH LCW ALERT LIMIT
DELY
XX
MINUTES OFF TIME
CLS.C
ENBL/DSBL
CLOSE CONTROL SELECT
Default: Disable
ICE.M
ENBL/DSBL
ICE MODE ENABLE
Default: Disable
C.UNB
XX %
CURRENT UNBALANCE SETPOINT
NO.FL
ENBL/DSBL
ENABLE NO FLOW DETECTION
Default: Enable
W.MSG
ENBL/DSBL
WINTERIZE ALERT CONFIG
Default: Enable
ALR.C
X
ALARM RELAY USAGE
22
Default: Switch
Switch = Enable/Off/Remote Contact
7 Day Occ = 7 Day Schedule
Occupancy = CCN Occupancy
CCN = CCN Control
Default: 1
Range: 1 to 239
Default: 0
Range: 0 to 239
Default: 9600
2400
4800
9600
19,200
38,400
Default: Equal
Equal
Staged
Default: Automatic
Automatic
Circuit A Leads
Circuit B Leads
Default: Automatic
Automatic
Compressor 1 Leads
Compressor 2 Leads
Default: 60
Range: 2 to 60 F
Default: 0 Minutes
Range: 0 to 15 Minutes
Default: 15%
Range: 10 to 25%
Default: Alerts + Alarms
Alerts + Alarms
Alarms Only
Off
Table 12  Configuration Mode and Sub-Mode Directory (cont)
SUBMODE
RSET
KEYPAD
ENTRY
ENTER
ITEM
DISPLAY
CRST
X
ITEM
EXPANSION
COOLING RESET TYPE
CRT1
XXX.X °F
NO COOL RESET TEMP
CRT2
XXX.X °F
FULL COOL RESET TEMP
DGRC
XX.X F
DEGREES COOL RESET
HRST
X
HEATING RESET TYPE
HRT1
XXX.X °F
NO HEAT RESET TEMP
HRT2
XXX.X °F
FULL HEAT RESET TEMP
DGRH
XX.X F
DEGREES HEAT RESET
DMDC
X
DEMAND LIMIT SELECT
DM20
XXX %
DEMAND LIMIT AT 20 mA
SHNM
XXX
LOADSHED GROUP NUMBER
SHDL
XXX %
LOADSHED DEMAND DELTA
SHTM
XXX
MAXIMUM LOADSHED TIME
DLS1
XXX %
DEMAND LIMIT SWITCH 1
DLS2
XXX %
DEMAND LIMIT SWITCH 2
LLEN
ENBL/DSBL
LEAD/LAG CHILLER ENABLE
Default: Disable
MSSL
SLVE/MAST
MASTER/SLAVE SELECT
Default: Master
SLVA
XXX
SLAVE ADDRESS
LLBL
X
LEAD/LAG BALANCE SELECT
LLBD
XXX
LEAD/LAG BALANCE DELTA
LLDY
XXX
LAG START DELAY
PARA
YES/NO
PARALLEL CONFIGURATION
23
COMMENT
Default: No Reset
No Reset
4 to 20 mA Input
Outdoor Air Temperature
Return Fluid
Space Temperature
Default: 125 F
Range: 0° to 125 F
For return fluid reset use cooler T
Default: 0° F
Range: 0° to 125 F
For return fluid reset use cooler T
Default: 0° F
Range: –30 to 30 F
Default: No Reset
No Reset
4 to 20 mA Input
Outdoor Air Temperature
Return Fluid
Space Temperature
Default: 0° F
Range: 0° to 125 F
Default: 125 F
Range: 0° to 125 F
Default: 0° F
Range: –30 to 30 F
Default: None
None
Switch
4 to 20 mA Input
CCN Loadshed
Default: 100%
Range: 0 to 100%
Default: 0
Range: 0 to 99
Default: 0%
Range: 0 to 60%
Default: 60 Minutes
Range: 0 to 120 Minutes
Default: 80%
Range: 0 to 100%
Default: 50%
Range: 0 to 100%
Default: 0
Range: 0 to 239
Default: Master Leads
Master Leads
Slave Leads
Automatic
Default: 168 hours
Range: 40 to 400 hours
Default: 5 minutes
Range: 0 to 30 minutes
Default: No (Series Flow)
Table 12  Configuration Mode and Sub-Mode Directory (cont)
SUB
MODE
SLCT
SERV
BCST
KEYPAD
ENTRY
ENTER
ENTER
ENTER
ITEM
DISPLAY
CLSP
X
ITEM
EXPANSION
COOLING SETPOINT SELECT
HTSP
X
HEATING SETPOINT SELECT
COMMENT
Default: Single
Single
Dual Switch
Dual 7 day
Dual CCN Occupied
4 to 20 mA Input (requires EMM)
Default: Single
Single
Dual Switch
Dual 7 day
Dual CCN Occupied
4 to 20 mA Input (requires EMM)
RL.S
ENBL/DSBL
RAMP LOAD SELECT
CRMP
X.X
COOLING RAMP LOADING
HRMP
X.X
HEATING RAMP LOADING
HCSW
COOL/HEAT
HEAT COOL SELECT
Z.GN
X.X
DEADBAND MULTIPLIER
BRN.L
YES/NO
HXC BRINE CONFIG LOCK
H.PGN
XX.X
HEAD PRESSURE P GAIN
H.IGN
XX.X
HEAD PRESSURE I GAIN
H.DGN
XX.X
HEAD PRESSURE D GAIN
H.MIN
XXX.X
WATER VALVE MINIMUM POS.
MT.SP
XXX.X °F
MOTOR TEMP SETPOINT
BR.FZ
XXX.X °F
BRINE FREEZE POINT
MC.SP
XXX.X °F
MAX. COND. TEMP SETPOINT
EX.S.A
XX.X %
EXVA START POSITION
EX.S.B
XX.X %
EXVB START POSITION
EN.A1
ENBL/DSBL
ENABLE COMPRESSOR A1
Default: Enable (All)
EN.A2
ENBL/DSBL
ENABLE COMPRESSOR A2
Disable (HX076-186, GXN,R080-178)
Enable (HX206-271, GXN,R204-350)
EN.B1
ENBL/DSBL
ENABLE COMPRESSOR B1
Default: Enable (All)
EN.B2
ENBL/DSBL
ENABLE COMPRESSOR B2
Disable (HX076-271, GXN,R080-268
Enable (GXN,R281-350)
W.DNE
YES/NO
WINTERIZATION PERFORMED
ECON
YES/NO
ECONOMIZED
EVPS
X
NUMBER OF EVAP. PASSES
Range: 1 To 4
LWTC
A/B
CIRCUIT WITH LWT SENSOR
According to number of cooler passes.
AP.SP
XXX.X °F
APPROACH SETPOINT
TD.B.C
ON/OFF
CCN TIME/DATE BROADCAST
Default: Off
OAT.B
ON/OFF
CCN OAT BROADCAST
Default: Off
GS.BC
ON/OFF
GLOBAL SCHEDULE BROADCAST
Default: Off
BC.AK
ON/OFF
BROADCAST ACKNOWLEDGER
Default: Off
24
Default: Enable
Default: 1.0
Range: 0.2 to 2.0
Default: 1.0
Range: 0.2 to 2.0
Default: Cool
Default: 2.0
Range: 1.0 to 4.0
Default: No
Yes, if brine FIOP is installed (liquid line
solenoid valves).
Default: 1.0
Range: –20 to 20
Default: 0.1
Range: –20 to 20
Default: 0.0
Range: –20 to 20
Default: 20%
Range: 0 to 100%
Default: 200 F (170 F for Brine)
Default: 34 F
Range: –20 to 34 F
Default: 152 F (GXN,R)
145 F (HXA)
118 F (HXC)
Range: 100 F To Default
Default: 20 %
Range: 0 T0 40 %
Default: 20 %
Range: 0 To 40 %
No (30HX076-146, 30GXN,R080-106,114)
Yes (30HX161-271,30GXN,R108,118-350)
Default: 3.0 F
Range: 0.1 to 20.0 F
Table 13 — Service Test Mode and Sub-Mode Directory
SUBMODE
TEST
OUTS
COMP
KEYPAD
ENTRY
ON/OFF
ITEM
EXPANSION
SERVICE TEST MODE
EXV.A
XXX %
EXV % OPEN
VH.PA
XXX %
VAR HEAD PRESS %
OL.P.A
ON/OFF
OIL PUMP
MC.A1
ON/OFF
MOTOR COOLING SOLENOID A1
MC.A2
ON/OFF
MOTOR COOLING SOLENOID A2
OS.A1
ON/OFF
OIL SOLENOID A1
OS.A2
ON/OFF
OIL SOLENOID A2
EXV.B
XXX %
EXV % OPEN
VH.PB
XXX %
VAR HEAD PRESS %
OL.P.B
ON/OFF
OIL PUMP
MC.B1
ON/OFF
MOTOR COOLING SOLENOID B1
MC.B2
ON/OFF
MOTOR COOLING SOLENOID B2
OS.B1
ON/OFF
OIL SOLENOID B1
OS.B2
ON/OFF
OIL SOLENOID B2
FAN1
ON/OFF
FAN 1 RELAY
FAN2
ON/OFF
FAN 2 RELAY
FAN3
ON/OFF
FAN 3 RELAY
FAN4
ON/OFF
FAN 4 RELAY
CLR.P
ON/OFF
COOLER PUMP RELAY
CLR.H
ON/OFF
COOLER HEATER
CND.P
ON/OFF
CONDENSER PUMP RELAY
RMT.A
ON/OFF
REMOTE ALARM RELAY
CC.A1
ON/OFF
COMPRESSOR A1 RELAY
CC.A2
ON/OFF
COMPRESSOR A2 RELAY
LD.A1
ON/OFF
LOADER A1 RELAY
LD.A2
ON/OFF
LOADER A2 RELAY
MLV
ON/OFF
MINIMUM LOAD VALVE
OL.H.A
ON/OFF
OIL HEATER
CC.B1
ON/OFF
COMPRESSOR B1 RELAY
CC.B2
ON/OFF
COMPRESSOR B2 RELAY
LD.B1
ON/OFF
LOADER B1 RELAY
LD.B2
ON/OFF
LOADER B2 RELAY
OL.H.B
ON/OFF
OIL HEATER
ITEM
ENTER
ENTER
ENTER
DISPLAY
25
COMMENT
To Enable Service Test Mode, move Enable/Off/
Remote Contact switch to OFF. Change TEST to
ON. Move switch to ENABLE.
Fans 1, 2 (080-150,160)
Fans 2, 4 (208, 228, 253, 268)
Fans 5, 6 (249, 264)
Fans 9, 10 (153, 163-178, 204,225,281-350)
Fans 15, 16 (253, 268)
Fans 3, 4 (080-178, 204, 225, 249, 264, 281-350)
Fan 3 (208, 228, 253, 268)
Fans 5, 6 (083, 093-160, 174, 204, 225)
Fans 6, 8 (253, 268)
Fans 7, 8 (118, 128, 138, 150, 160)
Fans 9, 10 (249, 264)
Fans 11, 12 (163, 178, 208, 228-268)
Fans 13, 14 (208, 228, 253, 268-350)
Fans 15, 16 (281-350)
Fans 5, 7 (208, 228, 253, 268)
Fans 5, 6, 7, 8 (281-350)
Fans 11, 12 (163, 178)
Energizes circuit A and B solenoids
Table 14 — Temperature Mode and Sub-Mode Directory
SUB-MODE
KEYPAD
ENTRY
ITEM
DISPLAY
ITEM
EXPANSION
UNIT
ENTER
CEWT
XXX.X °F
COOLER ENTERING FLUID
CLWT
XXX.X °F
COOLER LEAVING FLUID
OAT
XXX.X °F
OUTSIDE AIR TEMPERATURE
SPT
XXX.X °F
SPACE TEMPERATURE
CNDE
XXX.X °F
CONDENSER ENTERING FLUID
CNDL
XXX.X °F
CONDENSER LEAVING FLUID
DLWT
XXX.X °F
LEAD/LAG LEAVING FLUID
SCT.A
XXX.X °F
SATURATED CONDENSING TMP
SST.A
XXX.X °F
SATURATED SUCTION TEMP
SH.A
XXX.X ^F
DISCHARGE SUPERHEAT TEMP
DGT.A
XXX.X °F
DISCHARGE GAS TEMP
DGA.1
XXX.X °F
DISCHARGE GAS TEMP - A1
DGA.2
XXX.X °F
DISCHARGE GAS TEMP - A2
MT.A1
XXX.X °F
A1 MOTOR TEMPERATURE
MT.A2
XXX.X °F
A2 MOTOR TEMPERATURE
SCT.B
XXX.X °F
SATURATED CONDENSING TMP
SST.B
XXX.X °F
SATURATED SUCTION TEMP
SH.B
XXX.X ^F
DISCHARGE SUPERHEAT TEMP
DGT.B
XXX.X °F
DISCHARGE GAS TEMP
DGB.1
XXX.X °F
DISCHARGE GAS TEMP - B1
DGB.2
XXX.X °F
DISCHARGE GAS TEMP - B2
MT.B1
XXX.X °F
B1 MOTOR TEMPERATURE
MT.B2
XXX.X °F
B2 MOTOR TEMPERATURE
CIR.A
CIR.B
ENTER
ENTER
26
COMMENT
Average of A1/A2 values for
GXN,R204-350 and
HX206-271
GXN,R204-350 and
HX206-271 only
GXN,R204-350 and
HX206-271 only
Average of B1/B2 values for
GXN,R281-350
GXN,R281-350 only
GXN,R281-350 only
Table 15 — Pressure Mode and Sub-Mode Directory
SUB-MODE
KEYPAD
ENTRY
ITEM
DISPLAY
ITEM
EXPANSION
PRC.A
ENTER
DP.A
XXX.X PSIG
DISCHARGE PRESSURE
SP.A
XXX.X PSIG
SUCTION PRESSURE
ECN.A
XXX.X PSIG
ECONOMIZER PRESSURE
OP.A1
XXX.X PSIG
A1 OIL PRESSURE
OP.A2
XXX.X PSIG
A2 OIL PRESSURE
DO.A1
XXX.X PSI
A1 OIL PRESSURE DIFF.
DO.A2
XXX.X PSI
A2 OIL PRESSURE DIFF.
FD.A1
XXX.X PSI
A1 OIL FILTER DIFF. PRESS
FD.A2
XXX.X PSI
A2 OIL FILTER DIFF. PRESS
PS.A1
XX.X PSI
CALCULATED OIL PRESS A1
PS.A2
XX.X PSI
CALCULATED OIL PRESS A2
DP.B
XXX.X PSIG
DISCHARGE PRESSURE
SP.B
XXX.X PSIG
SUCTION PRESSURE
ECN.B
XXX.X PSIG
ECONOMIZER PRESSURE
OP.B1
XXX.X PSIG
B1 OIL PRESSURE
OP.B2
XXX.X PSIG
B2 OIL PRESSURE
DO.B1
XXX.X PSI
B1 OIL PRESSURE DIFF.
DO.B2
XXX.X PSI
B2 OIL PRESSURE DIFF.
FD.B1
XXX.X PSI
B1 OIL FILTER DIFF.
FD.B2
XXX.X PSI
B2 OIL FILTER DIFF.
PS.B1
XX.X PSI
CALCULATED OIL PRESS B1
CKT B oil pressure setpoint 1
(See notes for Table 32)
PS.B2
XX.X PSI
CALCULATED OIL PRESS B2
CKT B oil pressure setpoint 2
(See notes for Table 32)
PRC.B
ENTER
COMMENT
Equals oil pressure minus
Economizer pressure
Equals oil pressure minus
Economizer pressure
Equals discharge pressure
minus oil pressure
Equals discharge pressure
minus oil pressure
CKT A oil pressure setpoint 1
(See notes for Table 32)
CKT A oil pressure setpoint 2
(See notes for Table 32)
Equals oil pressure minus
Economizer pressure
Equals oil pressure minus
Economizer pressure
Equals discharge pressure
minus oil pressure
Equals discharge pressure
minus oil pressure
Table 16 — Set Point Mode and Sub-Mode Directory
SUB-MODE
KEYPAD
ENTRY
ITEM
DISPLAY
ITEM
EXPANSION
COOL
ENTER
CSP.1
XXX.X °F
COOLING SETPOINT 1
CSP.2
XXX.X °F
COOLING SETPOINT 2
CSP.3
XXX.X °F
ICE SETPOINT
HSP.1
XXX.X °F
HEATING SETPOINT 1
HSP.2
XXX.X °F
HEATING SETPOINT 2
HD.P.A
XXX.X °F
HEAD PRESSURE SETPOINT A
HD.P.B
XXX.X °F
HEAD PRESSURE SETPOINT B
HEAT
HEAD
ENTER
ENTER
27
COMMENT
Default: 44 F
Default: 44 F
Default: 32 F
Default: 100 F
Default: 100 F
Default: 113 F (30GX,HXA)
85 F (30HXC)
Default: 113 F (30GX,HXA)
85 F (30HXC)
Table 17 — Inputs Mode and Sub-Mode Directory
SUB-MODE
KEYPAD
ENTRY
ITEM
DISPLAY
ITEM
EXPANSION
GEN.I
ENTER
STST
STRT/STOP
START/STOP SWITCH
FLOW
ON/OFF
COOLER FLOW SWITCH
CND.F
ON/OFF
CONDENSER FLOW SWITCH
DLS1
ON/OFF
DEMAND LIMIT SWITCH 1
DLS2
ON/OFF
DEMAND LIMIT SWITCH 2
ICED
ON/OFF
ICE DONE
DUAL
ON/OFF
DUAL SETPOINT SWITCH
FKA1
ON/OFF
COMPRESSOR A1 FEEDBACK
FKA2
ON/OFF
COMPRESSOR A2 FEEDBACK
OIL.A
OPEN/CLSE
OIL LEVEL SWITCH
A1.CR
XXX AMPS
COMP A1 RUNNING CURRENT
A2.CR
XXX AMPS
COMP A2 RUNNING CURRENT
FKB1
ON/OFF
COMPRESSOR B1 FEEDBACK
FKB2
ON/OFF
COMPRESSOR B2 FEEDBACK
OIL.B
OPEN/CLSE
OIL LEVEL SWITCH
B1.CR
XXX AMPS
COMP B1 RUNNING CURRENT
B2.CR
XXX AMPS
COMP B2 RUNNING CURRENT
DMND
XX.X MA
4-20 MA DEMAND SIGNAL
RSET
XX.X MA
4-20 MA RESET SIGNAL
CSP
XX.X MA
4-20 MA COOLING SETPOINT
HSP
XX.X MA
4-20 MA HEATING SETPOINT
CRCT
4-20
ENTER
ENTER
28
COMMENT
Table 18 — Outputs Mode and Sub-Mode Directory
SUB-MODE
KEYPAD
ENTRY
ITEM
DISPLAY
ITEM
EXPANSION
GEN.O
ENTER
FAN1
ON/OFF
FAN 1 RELAY
FAN2
ON/OFF
FAN 2 RELAY
FAN3
ON/OFF
FAN 3 RELAY
FAN4
ON/OFF
FAN 4 RELAY
MLV
ON/OFF
MINIMUM LOAD VALVE
C.PMP
ON/OFF
COOLER PUMP RELAY
C.HT
ON/OFF
COOLER HEATER
CNDP
ON/OFF
CONDENSER PUMP RELAY
SMZ
X.X
LOAD/UNLOAD FACTOR
CC.A1
ON/OFF
COMPRESSOR A1 RELAY
CC.A2
ON/OFF
COMPRESSOR A2 RELAY
LD.A1
ON/OFF
LOADER A1 RELAY
LD.A2
ON/OFF
LOADER A2 RELAY
OL.P.A
ON/OFF
OIL PUMP
MC.A1
ON/OFF
MOTOR COOLING A1 SOLENOID
MC.A2
ON/OFF
MOTOR COOLING A2 SOLENOID
OL.H.A
ON/OFF
OIL HEATER
OL.A1
ON/OFF
OIL SOLENOID A1
OL.A2
ON/OFF
OIL SOLENOID A2
EXV.A
XXX %
EXV % OPEN
VH.PA
XXX %
VARIABLE HEAD PRESS %
CC.B1
ON/OFF
COMPRESSOR B1 RELAY
CC.B2
ON/OFF
COMPRESSOR B2 RELAY
LD.B1
ON/OFF
LOADER B1 RELAY
LD.B2
ON/OFF
LOADER B2 RELAY
OL.P.B
ON/OFF
OIL PUMP
MC.B1
ON/OFF
MOTOR COOLING B1 SOLENOID
MC.B2
ON/OFF
MOTOR COOLING B2 SOLENOID
OL.H.B
ON/OFF
OIL HEATER
OL.B1
ON/OFF
OIL SOLENOID B1
OL.B2
ON/OFF
OIL SOLENOID B2
EXV.B
XXX %
EXV % OPEN
VH.PB
XXX %
VARIABLE HEAD PRESS %
CIR.A
CIR.B
ENTER
ENTER
29
COMMENT
Table 19 — Operating Mode and Sub-Mode Directory
SUB-MODE
KEYPAD
ENTRY
ITEM
DISPLAY
ITEM
EXPANSION
MODE
ENTER
MD01
ON/OFF
CSM CONTROLLING CHILLER
MD02
ON/OFF
WSM CONTROLLING CHILLER
MD03
ON/OFF
MASTER/SLAVE CONTROL
MD04
ON/OFF
LOW SOURCE PROTECTION
MD05
ON/OFF
RAMP LOAD LIMITED
MD06
ON/OFF
TIMED OVERRIDE IN EFFECT
MD07
ON/OFF
LOW COOLER SUCTION TEMPA
MD08
ON/OFF
LOW COOLER SUCTION TEMPB
MD09
ON/OFF
SLOW CHANGE OVERRIDE
MD10
ON/OFF
MINIMUM OFF TIME ACTIVE
MD11
ON/OFF
LOW DISCHRGE SUPERHEAT A
MD12
ON/OFF
LOW DISCHRGE SUPERHEAT B
MD13
ON/OFF
DUAL SETPOINT
MD14
ON/OFF
TEMPERATURE RESET
MD15
ON/OFF
DEMAND LIMIT IN EFFECT
MD16
ON/OFF
COOLER FREEZE PROTECTION
MD17
ON/OFF
LOW TMP COOL/HI TMP HEAT
MD18
ON/OFF
HI TMP COOL/LO TMP HEAT
MD19
ON/OFF
MAKING ICE
MD20
ON/OFF
STORING ICE
MD21
ON/OFF
HIGH SCT CIRCUIT A
MD22
ON/OFF
HIGH SCT CIRCUIT B
MD23
ON/OFF
HIGH MOTOR CURRENT CIR. A
MD24
ON/OFF
HIGH MOTOR CURRENT CIR. B
MD25
ON/OFF
CKT A OFF REF FLOW DELAY*
MD26
ON/OFF
CKT B OFF REF FLOW DELAY*
MD27
ON/OFF
CIRCUIT A — PUMPING OUT
SHUTDOWN IN PROGRESS
MD28
ON/OFF
CIRCUIT B — PUMPOUT OUT
SHUTDOWN IN PROGRESS
MD29
ON/OFF
UNIT OFF: NO WATER FLOW
*Recycle restart pending 15-minute delay due to loss of refrigerant flow detected at start-up.
30
COMMENT
Table 20 — Run Status Mode and Sub-Mode Directory
SUB-MODE
KEYPAD
ENTRY
ITEM
DISPLAY
ITEM
EXPANSION
VIEW
ENTER
EWT
XXX.X °F
ENTERING FLUID TEMP
LWT
XXX.X °F
LEAVING FLUID TEMP
SETP
XXX.X °F
ACTIVE SETPOINT
CTPT
XXX.X °F
CONTROL POINT
STAT
X
CONTROL MODE
OCC
YES/NO
OCCUPIED
MIN.L
XX MIN
MINUTES LEFT FOR START
MODE
YES/NO
OVERRIDE MODES IN EFFECT
CAP
XXX %
PERCENT TOTAL CAPACITY
DEM.L
XXX %
ACTIVE DEMAND LIMIT
ALRM
XXX
CURRENT ALARMS & ALERTS
TIME
XX.XX
TIME OF DAY
MNTH
XX
MONTH OF YEAR
DATE
XX
DAY OF MONTH
YEAR
XX
YEAR
HRS.U
XXXX HRS
MACHINE OPERATING HOURS
STR.U
XXXX
MACHINE STARTS
HRS.A
XXXX HRS
CIRCUIT A RUN HOURS
HRS.B
XXXX HRS
CIRCUIT B RUN HOURS
HR.A1
XXXX HRS
COMPRESSOR A1 RUN HOURS
HR.A2
XXXX HRS
COMPRESSOR A2 RUN HOURS
HR.B1
XXXX HRS
COMPRESSOR B1 RUN HOURS
HR.B2
XXXX HRS
COMPRESSOR B2 RUN HOURS
STR.A
XXXX
CIRCUIT A STARTS
ST.A1
XXXX
COMPRESSOR A1 STARTS
ST.A2
XXXX
COMPRESSOR A2 STARTS
STR.B
XXXX
CIRCUIT B STARTS
ST.B1
XXXX
COMPRESSOR B1 STARTS
ST.B2
XXXX
COMPRESSOR B2 STARTS
RUN
HOUR
STRT
ENTER
ENTER
ENTER
31
COMMENT
SERVICE TEST
OFF LOCAL
OFF CCN
OFF TIME
OFF EMRGCY
ON LOCAL
ON CCN
ON TIME
00.00-23.59
January, February, etc.
01-31
Table 20 — Run Status Mode and Sub-Mode Directory (cont)
SUB-MODE
VERS
KEYPAD
ENTRY
ENTER
ITEM
ITEM
EXPANSION
DISPLAY
COMMENT
MBB
CESR-131344-xx-xx
xx-xx is Version number
EXV
CESR-131172-xx-xx
xx-xx is Version number
EMM
CESR-131174-xx-xx
xx-xx is Version number
CP1
100233-1R1-xx-xx
xx-xx is Version number
CP2
100233-1R1-xx-xx
xx-xx is Version number
SCB
CESR-131226-xx-xx
xx-xx is Version number
NAVI
CESR-131227-xx-xx
xx-xx is Version number
Table 21 — How to Adjust Navigator Backlight from Configuration Mode
SUB-MODE
KEYPAD
ENTRY
ITEM
DISPLAY
ITEM
EXPANSION
DISP
ENTER
TEST
ON/OFF
TEST DISPLAY LEDS
TEST
Enter Password
1111
OFF
TEST
ON
Change value to ‘ON’ (‘ON’ flashes).
TEST
ON
Display Test is Enabled. The alarm and all
mode LED’s light up. The Navigator will display all block segments.
Press arrow keys at the same time. The
Navigator will display ‘Adjust Brightness.’
Use the up arrow key to brighten the backlight and the down arrow key to dim the
backlight. Press the ESCAPE key when finished to exit the mode.
ENTER
ENTER
COMMENT
Enter password as required using ENTER
key after each number.
‘OFF’ will be flashing.
Table 22 — How to Adjust Navigator Contrast from Configuration Mode
SUB-MODE
KEYPAD
ENTRY
ITEM
DISPLAY
ITEM
EXPANSION
DISP
ENTER
TEST
ON/OFF
TEST DISPLAY LEDS
TEST
Enter Password
1111
OFF
TEST
ON
Change value to ‘ON’ (‘ON’ flashes).
TEST
ON
Display Test is Enabled. The alarm and all
mode LED’s light up. The Navigator will display all block segments.
ENTER
ENTER
ENTER
COMMENT
Enter password as required using ENTER
key after each number.
‘OFF’ will be flashing
Press Enter and Escape keys at the same
time. The Navigator will display ‘ADJUST
CONTRAST’ with a percentage indication.
Use the up arrow key to increase contrast
and the down arrow key to decrease the
contrast. Press the ESCAPE key when finished to exit the mode.
ESCAPE
32
Table 23 — Time Clock Mode and Sub-Mode Directory
SUB-MODE
KEYPAD
ENTRY
ITEM
DISPLAY
ITEM
EXPANSION
TIME
ENTER
HH.MM
XX.XX
HOUR AND MINUTE
Military (00:00 — 23:59)
MNTH
XX
MONTH OF YEAR
January, February, etc.
DOM
XX
DAY OF MONTH
DAY
X
DAY OF WEEK
YEAR
XXXX
YEAR
STR.M
XX
MONTH
STR.W
X
WEEK
STR.D
X
DAY
MIN.A
XX
MINUTES TO ADD
STP.M
XX
MONTH
STP.W
XX
WEEK
STR.D
XX
DAY
MIN.5
XX
MINUTES TO SUBTRACT
MON.O
XX.XX
MONDAY OCCUPIED TIME
MON.U
XX.XX
MONDAY UNOCCUIPED TIME
TUE.O
XX.XX
TUESDAY OCCUPIED TIME
TUE.U
XX.XX
TUESDAY UNOCCUPIED TIME
WED.O
XX.XX
WEDNESDAY OCCUPIED TIME
WED.U
XX.XX
WEDNESDAY UNOCCUPIED TIME
THU.O
XX.XX
THURSDAY OCCUPIED TIME
THU.U
XX.XX
THURSDAY UNOCCUPIED TIME
FRI.O
XX.XX
FRIDAY OCCUPIED TIME
FRI.U
XX.XX
FRIDAY UNOCCUPIED TIME
SAT.O
XX.XX
SATURDAY OCCUPIED TIME
SAT.U
XX.XX
SATURDAY UNOCCUPIED TIME
SUN.O
XX.XX
SUNDAY OCCUPIED TIME
SUN.U
XX.XX
SUNDAY UNOCCUPIED TIME
DATE
DST
SCHD
ENTER
ENTER
33
COMMENT
Range: 01-31
Monday, Tuesday, etc.
Default: 4
Range: 1-12
Default: 1
Range: 1-5
Default: 7
Range: 1-7
Default: 60
Range: 0-99
Default: 10
Range: 1-12
Default: 5
Range: 1-5
Default: 7
Range: 1-7
Default: 60
Range: 0-99
Default: 00.00
Range: 00.00 to 23.59
Default: 00.00
Range: 00.00 to 23.59
Default: 00.00
Range: 00.00 to 23.59
Default: 00.00
Range: 00.00 to 23.59
Default: 00.00
Range: 00.00 to 23.59
Default: 00.00
Range: 00.00 to 23.59
Default: 00.00
Range: 00.00 to 23.59
Default: 00.00
Range: 00.00 to 23.59
Default: 00.00
Range: 00.00 to 23.59
Default: 00.00
Range: 00.00 to 23.59
Default: 00.00
Range: 00.00 to 23.59
Default: 00.00
Range: 00.00 to 23.59
Default: 00.00
Range: 00.00 to 23.59
Default: 00.00
Range: 00.00 to 23.59
Table 24A — Example of Configuring Dual Chiller Control (Master Chiller)
SUB-MODE
ITEM
KEYPAD ENTRY
DISPLAY
OPT2
OPT2
ENTER
CTRL
ENTER
SWITCH
CTRL
ENTER
SWITCH
CCNA
ENTER
1
CCNA
ENTER
1
CCNB
ENTER
0
CCNB
ENTER
0
CCNB
ESCAPE
OPT2
RSET
ENTER
ITEM EXPANSION
VALUE FLASHES
CONTROL METHOD
CRST
SEE NOTE 1
DEFAULT 1
CCN ADDRESS
CHANGE IF REQUIRED
DEFAULT 0
CCN BUS NUMBER
RESET
RSET
COMMENT
CHANGE IF REQUIRED
PROCEDE TO SUBMODE RSET
NO RESET
COOLING RESET TYPE
15 ITEMS
LLEN
LLEN
ENTER
DSBL
ENTER
DSBL
VALUE FLASHES
ENBL
SELECT ENBL
ENTER
LEAD/LAG CHILLER ENABLE
ENBL
LEAD/LAG CHILLER ENABLE
SCROLLING STOPS
CHANGE ACCEPTED
MSSL
MSSL
SLVA
ENTER
ENTER
MAST
MASTER/SLAVE SELECT
SLVA
SLAVE ADDRESS
DEFAULT MAST
0
VALUE FLASHES
2
SELECT 2
SLVA
ENTER
2
SLAVE ADDRESS
LLBL
ENTER
MASTER LEADS
LEAD/LAG BALANCE SELECT
AUTOMATIC
CHANGE ACCEPTED
VALUE FLASHES
SELECT AUTOMATIC
LLBL
ENTER
AUTOMATIC
LEAD/LAG BALANCE SELECT
CHANGE ACCEPTED
LLBD
ENTER
168
LEAD/LAG BALANCE DELTA
ENTER
5
LAG START DELAY
ENTER
5
VALUE FLASHES
10
SELECT 10
DEFAULT 168
ENTER
LLDY
LLDY
ENTER
10
LAG START DELAY
PARA
ENTER
NO
PARALLEL CONFIGURATION
PARA
ENTER
YES
ESCAPE
RSET
YES
CHANGE ACCEPTED
DEFAULT NO
SELECT YES
PARALLEL CONFIGURATION
SEE NOTE 2
MASTER COMPLETE
NOTES:
1. The desired control method should be configured for the Master only. The slave is always configured for switch control.
2. Yes = Parallel piping configuration. No = Series piping configuration. Master and Slave chillers must both be configured for the same piping configuration.
34
Table 24B — Example of Configuring Dual Chiller Control (Slave Chiller)
SUB-MODE
ITEM
KEYPAD ENTRY
OPT2
OPT2
ENTER
DISPLAY
ITEM EXPANSION
CTRL
ENTER
SWITCH
CONTROL METHOD
ESCAPE
SWITCH
ESCAPE
CTRL
CTRL
CCNA
CCNA
COMMENT
SEE NOTE 1
CCNA
ENTER
1
ENTER
1
VALUE FLASHES
2
SELECT 2 (SEE NOTE 2)
ENTER
2
ESCAPE
CCNA
CCN ADDRESS
CCN ADDRESS
SCROLLING STOPS
CHANGE ACCEPTED
CCNB
CCNB
ENTER
0
ESCAPE
CCNB
ESCAPE
OPT2
CCN BUS NUMBER
RSET
RSET
RSET
LLEN
LLEN
ENTER
PROCEED TO SUBMODE RSET
CRST
COOLING RESET TYPE
LLEN
LEAD/LAG CHILLER ENABLE
MSSL
15 ITEMS
ENTER
DSBL
SCROLLING STOPS
ENTER
DSBL
VALUE FLASHES
ENBL
SELECT ENBL
ENTER
ENBL
ESCAPE
LLEN
LEAD/LAG CHILLER ENABLE
MSSL
MSSL
DEFAULT 0 (SEE NOTE 3)
CHANGE ACCEPTED
MASTER/SLAVE SELECT
ENTER
MAST
SCROLLING STOPS
ENTER
MAST
VALUE FLASHES
SLVE
SELECT SLAVE
ENTER
SLVE
ESCAPE
MSSL
MASTER/SLAVE SELECT
CHANGE ACCEPTED
5 ITEMS
PARA
ENTER
NO
PARALLEL CONFIGURATION
YES
PARA
ENTER
YES
ESCAPE
RSET
SELECT YES
PARALLEL CONFIGURATION
SEE NOTE 5
SLAVE COMPLETE
NOTES:
1. Slave is always configured for switch control.
2. Slave CCN Address must be different than Master.
3. Slave CCN Bus Number must be the same as Master.
4. Slave does not require LLBL, LLBD or LLDY to be configured.
5. Yes = Parallel piping configuration. No = Series piping configuration.
Master and Slave chillers must both be configured for the same piping configuration.
35
Alarms/Alerts — Alarms and alerts are messages that
one or more faults have been detected. The alarms and alerts
indicate failures that cause the unit to shut down, terminate an
option (such as reset) or result in the use of a default value such
as a set point. Refer to the Troubleshooting section for more
information.
Up to 25 alarms/alerts can be displayed in currently active
alarms. Up to 50 alarms/alerts can be stored in the alarm history. See Tables 25 and 26 to view and clear alarms.
Temperature Reset — The control system is capable of
handling leaving-fluid temperature reset based on return cooler
fluid temperature. Because the change in temperature through
the cooler is a measure of the building load, the return temperature reset is in effect an average building load reset method.
The control system is also capable of temperature reset based
on outdoor-air temperature (OAT), space temperature (SPT), or
from an externally powered 4 to 20 mA signal. Accessory
sensors must be used for OAT and SPT reset (HH79NZ023 for
OAT and HH51BX006 for SPT). The Energy Management
Module (EMM) must be used for temperature reset using a 4 to
20 mA signal.
To use the return reset, four variables must be configured. In
the Configuration mode under the sub-mode RSET, items
CRST, CRT1, CRT2, and DGRC must be set properly. See
Tables 27 and 28 on page 37 for correct configuration.
To reset the return fluid temperature, the unit set point is
reset from full load based on the chilled fluid return temperature. The example uses a reset value of 10 degrees at full reset.
Full reset is at a 2-degree temperature difference across the
cooler and no reset would be at a 10 F difference across the
cooler. See Fig. 14-17 and Table 29.
Under normal operation, the chiller will maintain a constant
leaving fluid temperature approximately equal to the chilled
fluid set point. As the cooler load varies, the entering cooler
fluid will change in proportion to the load as shown in Fig. 14.
Usually the chiller size and leaving-fluid temperature set point
are selected based on a full-load condition. At part load, the
fluid temperature set point may be colder than required. If the
leaving fluid temperature was allowed to increase at part load,
the efficiency of the machine would increase.
Return temperature reset allows for the leaving temperature
set point to be reset upward as a function of the return fluid
temperature or, in effect, the building load.
Figure 14 is an example of no reset. Figures 15, 16, and 17
are examples of outdoor air, space and return water temperature resets.
IMPORTANT: Do not clear the alarms without first
reviewing the full list and investigating and correcting
the cause of the alarms.
When an alarm or alert is stored in the display and the
machine automatically resets, the alarm/alert is deleted. Codes
for safeties which do not automatically reset are not deleted
until the problem is corrected and the machine is reset. To clear
manual reset alarms from the CCP modules, press the reset
button located on the CCP board generating the alarm, for
5 seconds, (CCP1 for compressors A1 or B1, CCP2 for
compressors A2 or B2). Next, follow the example in Table 26
to clear the alarm from the Main Base Board (MBB) history.
Alarm relay usage alerts and alarms are configurable
in (CONFIGURATION MODE, SUB-MODE OPT2) to be
both one or the other or off paragraph.
Run Hours and Starts — The HOUR and STRT sub-
modes under the Run Status mode contain items for number of
hours for each circuit and each compressor and the total
number of starts for each compressor. All items are password
protected, but can be changed if a replacement MBB is
installed.
Press ENTER to make the current value flash. Use the arrow
keys to configure the correct value and press the ENTER key
again. Record the current values from the MBB before removing the module or downloading new software.
Table 25 — Alarms Mode and Sub-Mode Directory
SUB-MODE
KEYPAD ENTRY
ITEM
ITEM EXPANSION
CRNT
ENTER
AXXX or TXXX
CURRENTLY ACTIVE ALARMS
RCRN
ENTER
YES/NO
RESET ALL CURRENT ALARMS
HIST
ENTER
AXXX or TXXX
ALARM HISTORY
COMMENT
Alarms are shown as AXXX.
Alerts are shown as TXXX.
Alarms are shown as AXXX.
Alerts are shown as TXXX.
Table 26 — Example of Reading and Clearing Alarms
SUB-MODE
KEYPAD
ENTRY
ITEM
ITEM EXPANSION
CRNT
ENTER
AXXX or TXXX
CURRENTLY ACTIVE ALARMS
CRNT
ESCAPE
ENTER
COMMENT
ACTIVE ALARMS (AXXX) OR
ALERTS (TXXX) DISPLAYED.*
NO
Use to clear active alarms/alerts
NO
NO Flashes
YES
Select YES
NO
Alarms/alerts clear, YES changes to NO
RCRN
ENTER
*Press
ENTER
and
ESCAPE
simultaneously to display expanded alarm description.
36
Table 27 — Configuring Temperature Reset
MODE
CONFIGURATION
KEYPAD
KEYPAD
ENTRY SUB-MODE ENTRY
ITEM
DISPLAY
ITEM
EXPANSION
DISP
ENTER
TEST
ON/OFF
TEST DISPLAY LEDs
UNIT
ENTER
TYPE
X
UNIT TYPE
OPT1
ENTER
FLUD
X
COOLER FLUID
OPT2
ENTER
CTRL
X
CONTROL METHOD
CRST
X
COOLING RESET TYPE
ENTER
RSET
ENTER
CRT1
CRT2
DGRC
COMMENT
0 = No Reset
1 = 4 to 20 mA Input (EMM required)
(Connect to EMM J6-2,5)
2 = Outdoor-Air Temperature
(Connect to TB5-7,8)
3 = Return Fluid
4 = Space Temperature
(Connect to TB5-5,6)
Default: 125 F (51.7 C)
Range: 0° to125 F
XXX.X F NO COOL RESET TEMP Set to 4.0 for CRST= 1
No Cool Reset T for CRST=3
Default: 0° F (–17.8 C)
Range: 0° to 125 F
XXX.X F FULL COOL RESET TEMP
Set to 20.0 for CRST=1
Full Cool Reset T for CRST=3
Default: 0° F (0° C)
XX.X F DEGREES COOL RESET
Range: –30 to 30 F (–16.7 to 16.7 C)
Table 28 — Return Water Reset
SUB-MODE
KEYPAD
ENTRY
ITEM
DISPLAY
ITEM
EXPANSION
3
COOLING RESET
TYPE
10.0 F
(5.5 C)
2.0 F
(1.1 C)
5.0 F
(2.8 C)
NO COOL RESET
TEMP
FULL COOL
RESET TEMP
DEGREES COOL
RESET
RSET
ENTER
CRST
CRT1
CRT2
DGRC
LEGEND
EWT — Entering Water (Fluid) Temperature
LWT — Leaving Water (Fluid) Temperature
COMMENT
0 = no reset
1 = 4 to 20 mA input
2 = Outdoor air temp
3 = Return Fluid
4 = Space Temperature
Default: 125 F (51.7 C)
Range: 0° to 125 F
Default: 0° F (–17.8 C)
Range: 0° to 125 F
Default: 0°F (0° C)
Range: –30 to 30 F (–16.7 to 16.7 C)
LEGEND
LWT — Leaving Water (Fluid) Temperature
Fig. 15 — Outdoor-Air Temperature Reset
Fig. 14 — Cooling Return Water — No Reset
37
percentages. The second type is by 4 to 20 mA signal input
which will reduce the maximum capacity linearly between
100% at a 4 mA input signal (no reduction) down to the
user-configurable level at a 20 mA input signal. The third type
uses the CCN Loadshed module and has the ability to limit the
current operating capacity to maximum and further reduce the
capacity if required.
NOTE: The 2-stage switch control and 4- to 20-mA input
signal types of demand limiting require the Energy Management Module (EMM).
To use Demand Limit, select the type of demand limiting to
use. Then configure the Demand Limit set points based on the
type selected.
DEMAND LIMIT (2-Stage Switch Controlled) — To configure Demand Limit for 2-stage switch control set the Demand
Limit Select (DMDC) to 1. Then configure the 2 Demand
Limit Switch points (DLS1 and DLS2) to the desired capacity
limit. See Table 29. Capacity steps are controlled by 2 relay
switch inputs field wired to TB6.
For Demand Limit by 2-stage switch control, closing the
first stage demand limit contact will put the unit on the first
demand limit level. The unit will not exceed the percentage of
capacity entered as Demand Limit Switch 1 set point. Closing
contacts on the second demand limit switch prevents the unit
from exceeding the capacity entered as Demand Limit Switch
2 set point. The demand limit stage that is set to the lowest
demand takes priority if both demand limit inputs are closed. If
the demand limit percentage does not match unit staging, the
unit will limit capacity to the closest capacity stage.
To disable demand limit configure the DMDC to 0. See
Table 29.
EXTERNALLY POWERED DEMAND LIMIT (4 to
20 mA Controlled) — To configure Demand Limit for 4 to
20 mA control set the Demand Limit Select (DMDC) to 2.
Then configure the Demand Limit at 20 mA (DM20) to the
maximum loadshed value desired. The control will reduce
allowable capacity to this level for the 20 mA signal.
DEMAND LIMIT (CCN Loadshed Controlled) — To configure Demand Limit for CCN Loadshed control set the
Demand Limit Select (DMDC) to 3. Then configure the
Loadshed Group Number (SHNM), Loadshed Demand Delta
(SHDL), and Maximum Loadshed Time (SHTM). See
Table 29.
The Loadshed Group number is established by the CCN
system designer. The ComfortLink™ Control will respond to a
Redline command from the Loadshed control. When the Redline command is received, the current stage of capacity is set to
the maximum stages available. Should the loadshed control
send a Loadshed command, the ComfortLink Control will
LEGEND
LWT — Leaving Water (Fluid) Temperature
Fig. 16 — Space Temperature Reset
DESIGN RISE
5.0
4.4
3.8
3.3
2.8
2.2
1.7
1.1
.55
0
10
RESET AMOUNT DEGREES F
RESET AMOUNT DEGREES C
5.5
9
8
7
FULL COOL
RESET ΔT
6
5
RESET
AMOUNT
4
CHANGE IN
3 LWT SET
POINT
2
1
NO COOL
RESET ΔT
0
9
5
10
8
6
2
3
4
7
1
TEMPERATURE DIFFERENCE (EWT-LWT) DEGREES F
0 .55 1.1 1.7 2.2 2.8 3.3 3.9 4.4 5.0 5.5
TEMPERATURE DIFFERENCE (EWT-LWT) DEGREES C
LEGEND
EWT — Entering Water (Fluid) Temperature
LWT — Leaving Water (Fluid) Temperature
Fig. 17 — Return Water Reset
Demand Limit — Demand Limit is a feature that allows
the unit capacity to be limited during periods of peak energy usage. See Fig. 18. There are 3 types of demand limiting that can
be configured. The first type is through 2-stage switch control,
which will reduce the maximum capacity to 2 user-configurable
MAX. ALLOWABLE LOAD (%)
100
50% CAPACITY AT 20 mA
80
60
40 100% CAPACITY AT 4 mA
75% CAPACITY AT 12 mA
20
0
0
2
4
12
6
8
10
DEMAND LIMIT SIGNAL – 4 - 20 mA INPUT
14
Fig. 18 — 4 to 20 mA Demand Limiting
38
16
18
20
reduce the current stages by the value entered for Loadshed
Demand delta. The Maximum Loadshed Time is the defines
the maximum length of time that a loadshed condition is
allowed to exist. The control will disable the Redline/Loadshed
command if no Cancel command has been received within the
configured maximum loadshed time limit.
Cooling Set Point (4 to 20 mA) — Unit operation is
based on an external 4 to 20 mA signal input to the Energy
Management Module (EMM). The signal is connected to
TB6-3,5 (+,–). Figure 19 shows how the 4 to 20 mA signal is
linearly calculated on an overall 10 F to 80 F for both Water
and Medium Temperature Brine COOLER FLUID configurations. See Table 30 for configuration instructions.
100
(38)
90
(32)
80
(27)
SET POINT, F (C)
70
(21)
MAXIMUM
SET POINT
70 F (21.1 C)
60
(15)
50
(10)
40
(4.4)
(FLUD = 1) MINIMUM
SET POINT 38 F (3.3 C)
30
(-1)
20
(-7)
(FLUD = 2) MINIMUM
SET POINT 14 F (-10 C)
10
(-12)
0
(-17) 0
2
4
6
8
10
12
14
4 TO 20 mA SIGNAL TO EMM
LEGEND
EMM — Energy Management Module
Fig. 19 — Cooling Set Point (4 to 20 mA)
39
16
18
20
Table 29 — Configuring Demand Limit
MODE
CONFIGURATION
KEYPAD
ENTRY
SUB-MODE
KEYPAD
ENTRY
ITEM
DISPLAY
ITEM EXPANSION
ENTER
DISP
ENTER
TEST
ON/OFF
Test Display LEDs
UNIT
ENTER
TYPE
X
Unit Type
OPT1
ENTER
FLUD
X
Cooler Fluid
OPT2
ENTER
CTRL
X
Control Method
RSET
ENTER
CRST
X
Cooling Reset Type
CRT1
XXX.X °F
No Cool Reset Temperature
CRT2
XXX.X °F
Full Cool Reset Temperature
DGRC
XX.X F
Degrees Cool Reset
DMDC
X
Demand Limit Select
DM20
XXX%
Demand Limit at 20 mA
SHNM
XXX
Loadshed Group
Number
SHDL
XXX%
Loadshed Demand
Delta
SHTM
XXX MIN
Maximum Loadshed
Time
DLS1
XXX %
Demand Limit
Switch 1
DLS2
XXX%
Demand Limit
Switch 2
COMMENT
Default: 0
0 = None
1 = Switch
2 = 4 to 20 mA Input
3 = CCN Loadshed
Default: 100%
Range: 0 to 100
Default: 0
Range: 0 to 99
Default: 0%
Range: 0 to 60%
Default: 60 min.
Range: 0 to 120 min.
Default: 80%
Range: 0 to 100%
Default: 50%
Range: 0 to 100%
NOTE: Heating reset values skipped in this example.
Table 30 — Menu Configuration of 4 to 20 mA Cooling Set Point Control
MODE
(RED LED)
KEYPAD
ENTRY
SUB-MODE
CONFIGURATION
ENTER
DISP
KEYPAD
ENTRY
ITEM
DISPLAY
ITEM
EXPANSION
ENTER
CLSP
0
COOLING SETPOINT SELECT
COMMENT
UNIT
OPT1
OPT2
RSET
SLCT
ENTER
0
Scrolling Stops
ENTER
0
Flashing ‘0’
4
Select ‘4’
4
Change Accepted
ENTER
40
shut down immediately and EXV closes. Refer to Table 31 for
typical stoppage faults and reset types.
TROUBLESHOOTING
The 30GXN,R and 30HX screw chiller control has many
features to aid in troubleshooting. By using the Navigator
control, operating conditions of the chiller can be viewed while
the chiller is running. The Service Test function allows for
testing of all outputs and compressors. Verify that the chiller is
properly configured, including options and/or accessories,
using the Configuration mode. For checking specific items,
refer to the Mode/Sub-Mode directory (Table 11).
If a stoppage occurs more than once as a result of any of
the preceding safety devices, determine and correct the
cause before attempting another restart.
Restart Procedure — After the cause for stoppage has
Checking Display Codes — To determine how the
been corrected, restart is either automatic or manual, depending
on the fault. Manual reset requires that the alarm(s) be reset via
the Navigator. Select the RCRN item under the Alarms mode.
Press ENTER ,
and ENTER again to reset all current alarms and
alerts. A password entry may be required. Some typical fault
conditions are described in Table 31. For a complete list of
fault conditions, codes and reset type, see Table 32.
machine has been programmed to operate, check the diagnostic
information displayed in the Status function and the configuration information displayed in the Service function.
Unit Shutoff — To shut the unit off, move the Enable/
Off/Remote Contact switch to the Off position. Both circuits
will complete a pumpdown cycle and all compressors and solenoids will shut off. For extreme cases, move the Emergency
On/Off switch to the Off position. All compressors, solenoids
and other outputs will stop immediately.
POWER FAILURE EXTERNAL TO THE UNIT — Unit
restarts automatically when power is restored.
Complete Unit Stoppage — Complete unit stoppage
Alarms and Alerts — These are warnings of abnormal
or fault conditions and may cause either one circuit or the
whole unit to shut down. They are assigned code numbers and
a detailed description of each alarm/alert code error including
possible causes is shown in Table 32. The alarm descriptions
are displayed on the Navigator under the ‘CRNT’ or ‘HIST’
sub-modes of the Alarms mode. The Main Base Board
also recognizes and reports illegal configurations as shown in
Table 32.
When an alarm or alert is activated configurable, the alarm
relay output (MBB relay K7, terminals TB5-11,12) is energized. The alarms and alerts indicate failures that cause the unit
to shut down, terminate an option (such as reset) or result in the
use of a default value such as a set point. Refer to Table 32 for
more information.
Up to 50 alarms/alerts can be stored at once. Use Alarm and
Alert tables to view and clear alarms. ComfortLink™ Compressor Protection (CCP) module alarms require an additional
step to reset alarms. To clear these alarms, first find and correct
the cause of the alarm. Then press and hold the reset button on
the CCP board for 5 seconds. This action will reset only the
alarmed circuit or compressor, and clear the CCP. Next, reset
the alarm(s) using the Navigator as shown in Table 26. For
configuration header fault alarms from the CCP module, move
the Enable/Off/Remote Contact switch to the Off position.
Wait for all compressors to stop. Turn off the unit control power. Correct the configuration header problem and restore unit
control power.
can be caused by any of the following conditions:
• cooling load satisfied
• remote on/off contacts open
• programmed schedule
• emergency stop command from CCN
• general power failure
• blown fuse in control power feed disconnect
• open control circuit fuse(s)
• Enable/Off/Remote Contact switch moved to Off
position
• freeze protection trip
• low flow protection trip
• open contacts in chilled water flow switch
• Open contacts in any auxiliary interlock. Terminals that
are jumpered from factory are in series with control
switch. Opening the circuit between these terminals
places unit in Stop mode, similar to moving the control
switch to Off position. Unit cannot start if these contacts
are open. If they open while unit is running, the unit
stops
• cooler entering or leaving fluid thermistor failure
• low/high transducer supply voltage
• loss of communications between the Main Base Board
(MBB) and either the EXV board, SCB board or either
CCP module
• low refrigerant pressure
• off-to-on delay is in effect
Table 31 — Typical Stoppage Faults
and Reset Types
If a stoppage occurs more than once as a result of any of
the above safety devices, determine and correct the
cause before attempting another restart.
STOPPAGE FAULT
Loss of Condenser Flow (30HXC)
Cooler Freeze Protection (Chilled
Fluid, Low Temperature)
Cooler Pump Interlock
Single Circuit Stoppage — Single circuit stoppage
can be caused by the following:
• low oil pressure
• open contacts in high pressure switch
• low refrigerant pressure
• thermistor failure
• transducer failure
• alarm condition from CCP module
Stoppage of one circuit by a safety device action does not
affect other circuit. When a safety device trips, the circuit is
Control Circuit Fuse Blown
High-Pressure Switch Open
Low Sat. Suction Temperature
Low Oil Pressure
Loss of Communications with
WSM or CSM Controller
CSM
WSM
41
RESET TYPE
Manual reset
Auto reset first time, manual if
repeated in same day
Manual reset
Unit restarts automatically
when power is restored
Manual reset
Manual reset after 1 hour
Manual reset
Automatic reset
LEGEND
— Chillervisor™ System Manager
— Water System Manager
fault condition for a compressor alert is included as part of the
alert description displayed on the Navigator. Press ENTER and
ESCAPE simultaneously to display description.
Compressor Alarm/Alert Circuit — Each compressor is directly controlled by a CCP module. Compressor faults
(T051, T052, T055, T056) are reported as alerts. The specific
Table 32  Alarm and Alert Codes
ALARM/ALERT
CODE
T026
T027
T028
T029
ALARM OR
DESCRIPTION
ALERT
Alert
Compressor A1 Low
Oil Pressure – 1
Alert
Alert
Alert
WHY WAS THIS ALARM
GENERATED?
PO-Pe < Oil Set Point 1.
See Note 1 and Fig. 20 on
page 49.
ACTION TAKEN BY
CONTROL
Comp A1 shut down
Compressor A1 Low
Oil Pressure – 2
PO-PS < Oil Set
Point 2.
See Note 1 and Fig. 20 on
page 49.
Comp A1 shut down
Compressor A2 Low
Oil Pressure – 1
PO-Pe < Oil Set
Point 1.
See Note 1 and Fig. 20 on
page 49.
Comp A2 shut down
Compressor A2 Low
Oil Pressure – 2
PO-PS < Oil Set
Point 2.
See Note 1 and Fig. 20 on
page 49.
Comp A2 shut down
Compressor B1 Low
Oil Pressure – 1
PO-Pe < Oil Set
Point 1.
See Note 1 and Fig. 20 on
page 49.
Comp B1 shut down
Compressor B1 Low
Oil Pressure – 2
PO-PS < Oil Set
Point 2.
See Note 1 and Fig. 20 on
page 49.
Comp B1 shut down
Compressor B2 Low
Oil Pressure – 1
PO-Pe < Oil Set
Point 1.
See Note 1 and Fig. 20 on
page 49.
Comp B2 shut down
Compressor B2 Low
Oil Pressure – 2
PO-PS < Oil Set
Point 2.
See Note 1 and Fig. 20 on
page 49.
Comp B2 shut down
A030
Alarm
Compressor A1 PreStart Oil Pressure
Oil Pump did not build suffiCompressor cannot
cient pressure during pre-lube start.
cycle.
A031
Alarm
Compressor A2 PreStart Oil Pressure
Oil Pump did not build suffiCompressor cannot
cient pressure during pre-lube start.
cycle.
A032
Alarm
Compressor B1 PreStart Oil Pressure
Oil Pump did not build suffiCompressor cannot
cient pressure during pre-lube start.
cycle.
A033
Alarm
Compressor B2 PreStart Oil Pressure
Oil Pump did not build suffiCompressor cannot
cient pressure during pre-lube start.
cycle.
42
RESET
PROBABLE CAUSE
METHOD
Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
Manual Low oil, oil pump failure, oil
solenoid failure, oil transducer
failure, check valve failed
open, oil shutoff valve closed.
Manual Low oil, oil pump failure, oil
solenoid failure, oil transducer
failure, check valve failed
open, oil shutoff valve closed.
Manual Low oil, oil pump failure, oil
solenoid failure, oil transducer
failure, check valve failed
open, oil shutoff valve closed.
Manual Low oil, oil pump failure, oil
solenoid failure, oil transducer
failure, check valve failed
open, oil shutoff valve closed.
Table 32  Alarm and Alert Codes (cont)
ALARM/ALERT
CODE
A034
ALARM OR
WHY WAS THIS ALARM
ACTION TAKEN BY
DESCRIPTION
ALERT
GENERATED?
CONTROL
Alarm
Comp. A1 Max. Oil
(Discharge press – Oil press) Comp. A1 shut down
Delta P, check oil line > 100 PSI for more than
5 seconds
A035
Alarm
Comp. A2 Max. Oil
(Discharge press – Oil press) Comp. A2 shut down
Delta P, check oil line > 100 PSI for more than
5 seconds
A036
Alarm
Comp. B1 Max. Oil
(Discharge press – Oil press) Comp. B1 shut down
Delta P, check oil line > 100 PSI for more than
5 seconds
A037
Alarm
Comp. B2 Max. Oil
(Discharge press – Oil press) Comp. B2 shut down
Delta P, check oil line > 100 PSI for more than
5 seconds
A038
Alarm
Comp. A1 Failed Oil
Solenoid
A039
Alarm
Comp. A2 Failed Oil
Solenoid
A040
Alarm
Comp. B1 Failed Oil
Solenoid
A041
Alarm
Comp. B2 Failed Oil
Solenoid
Diff. Oil Pressure > 2.5 PSI
during period after oil pump
starts and before oil solenoid opens
Diff. Oil Pressure > 2.5 PSI
during period after oil pump
starts and before oil solenoid opens
Diff. Oil Pressure > 2.5 PSI
during period after oil pump
starts and before oil solenoid opens
Diff. Oil Pressure > 2.5 PSI
during period after oil pump
starts and before oil solenoid opens
43
Comp. A1 not allowed
to start
RESET
PROBABLE CAUSE
METHOD
Manual Plugged oil filter, closed oil
valve, bad oil solenoid, compressor oil check valve stuck,
oil line check valve stuck,
plugged oil strainer
Manual Plugged oil filter, closed oil
valve, bad oil solenoid, compressor oil check valve stuck,
oil line check valve stuck,
plugged oil strainer
Manual Plugged oil filter, closed oil
valve, bad oil solenoid, compressor oil check valve stuck,
oil line check valve stuck,
plugged oil strainer
Manual Plugged oil filter, closed oil
valve, bad oil solenoid, compressor oil check valve stuck,
oil line check valve stuck,
plugged oil strainer
Manual Faulty oil solenoid valve
Comp. A2 not allowed
to start
Manual
Faulty oil solenoid valve
Comp. B1 not allowed
to start
Manual
Faulty oil solenoid valve
Comp. B2 not allowed
to start
Manual
Faulty oil solenoid valve
Table 32  Alarm and Alert Codes (cont)
ALARM/ALERT
CODE
T051
T052
T055
T056
ALARM OR
WHY WAS THIS ALARM
ACTION TAKEN BY
DESCRIPTION
ALERT
GENERATED?
CONTROL
Alert
Compressor A1
Failure – (See below)
Alert
Compressor A2
Failure – (See below)
See additional descriptions below.
Alert
Compressor B1
Failure – (See below)
Alert
Compressor B2
Failure – (See below)
Manual
No Motor Current
Comp. shut down
Manual
CCP measures current
Circuit shut down
imbalance between phases
must be above C.UNB for
25 minutes
Single Phase Current CCP measures current
Circuit shut down
Loss
imbalance between phases
greater than 50% (running
current <50% of MTA) or
30% (running current  50%
of MTA) for 1 second.
High Motor Current
CCP detects high current
Comp. shut down
compared to MTA setting
Manual
CCP reads less than 10%
of MTA on all legs for
>3.0 seconds
T062
Alert
T063
Alert
T070
Alert
Manual
CCP detects ground current
(4.0 ± 2.0 amps)
Comp. shut down
Manual
Contactor Failure
CCP detects min. 10% of
MTA for 10 seconds after
shutting off compressor contactor. Oil solenoid is energized.
Manual
Current Phase
Reversal
CCP detects phase reversal
from toroid reading or from
incoming power supply.
All remaining compressors shut down.
All loaders deenergized. Min. load valve
of affected circuit
energized (if
equipped)
Circuit shut down
Motor Over
Temperature
CCP detects motor winding
temperature >245 F
Open Thermistor
CCP detects open circuit in Comp. shut down
motor temp thermistor
CCP finds error with MTA
Comp. shut down
value punched out in header.
MTA value stored in MBB
does not agree with MTA
header value from CCP.
Comp. shut down
Comp. not allowed to
start
Shorted Thermistor
Alarm
Manual
Ground Fault Trip
MTA Value Error
A061
Loss of condenser air/water
flow. Operation beyond chiller
capability. Liquid valve not
open.
Power supply disconnected,
blown fuse(s), wiring error, contactor not energized, faulty current toroid, check toroid
wiring.
Loose terminals on power
wires. Alert will be generated if
measured imbalance exceeds
set point.
Blown fuse, wiring error, loose
terminals
Comp. shut down
MTA Header Fault
Alarm
PROBABLE CAUSE
High Pressure Switch
Trip
HPS input to CCP module
open
Current Unbalance
A060
RESET
METHOD
CCP detects short circuit in Comp. shut down
motor temp thermistor
Cooler Leaving Fluid Thermistor outside range of Chiller shut down
Thermistor Failure – 1 –40 to 240° F (–40 to 116° C)
Cooler Leaving Fluid LWT > EWT + 5° F for
Chiller shut down
Thermistor Failure – 2 15 minutes
Cooler Entering Fluid
Thermistor Failure
Condenser Leaving
Fluid Thermistor
Failure
Condenser Entering
Fluid Thermistor
Failure
Cir. A Discharge Gas
Thermistor Failure
Thermistor outside range of
–40 to 240° F (–40 to 116° C)
Thermistor outside range of
–40 to 240° F (–40 to 116° C)
Uses 0.1×F/% Total
Capacity as rise/ton
None. Chiller continues to run.
Thermistor outside range of None. Chiller contin–40 to 240° F (–40 to 116° C) ues to run.
Average of compressor A1
and A2 (if installed)
sensors > 210° F for
30 seconds.
44
Circuit A shut down
Operation beyond chiller capability, improperly punched configuration header, blown fuse
Motor winding(s) gone to
ground, wiring error, loose plug
connector.
Faulty contactor, contactor
welded, wiring error.
Manual
Terminal block power supply
leads not in correct phase.
Toroid wire harness crossed.
Check compressor contactor.
Manual Motor cooling (all) or Economizer (2 comp. circuits) solenoid failure, low refrigerant
charge. Faulty economizer TXV
or poor bulb connection to
motor cooling line.
Manual Wiring error or faulty
thermistor*
Manual Header pins on CCP board
either all or none punched out,
header not fully seated in CCP
board.
Manual Header pin(s) on CCP board
not punched out correctly. See
Appendix A. Incorrect size or
voltage entered when MBB
was downloaded.
Manual Wiring error or faulty
thermistor*
Automatic Thermistor failure, damaged
cable/wire or wiring error.
Manual Thermistor failure, damaged
cable/wire, wiring error or water
piping error.
Automatic Thermistor failure, damaged
cable/wire or wiring error.
Automatic Thermistor failure, damaged
cable/wire or wiring error.
Automatic Thermistor failure, damaged
cable/wire or wiring error.
Manual
Thermistor failure, damaged
cable/wire, wiring error or
motor cooling solenoid failure.
Table 32  Alarm and Alert Codes (cont)
ALARM/
ALERT CODE
T071
ALARM OR
DESCRIPTION
ALERT
Alert
Cir. B Discharge Gas
Thermistor Failure
T073
Alert
T074
Alert
T075
Alert
T076
Alert
T077
Alert
T078
Alert
T079
Alert
T090
Alert
T091
Alert
T092
Alert
T093
Alert
T094
Alert
T095
Alert
T096
Alert
T097
Alert
T098
Alert
Alert
T099
Alert
Alert
T110
Alert
T111
Alert
Outside Air Temperature Thermistor
Failure
Space Temperature
Thermistor Failure
Compressor A1
Discharge Gas
Thermistor Failure
Compressor A2
Discharge Gas
Thermistor Failure
Compressor B1
Discharge Gas
Thermistor Failure
Compressor B2
Discharge Gas
Thermistor Failure
Lead/Lag Leaving
Fluid Temperature
Thermistor Failure
Circuit A Discharge
Pressure Transducer
Failure
Circuit B Discharge
Pressure Transducer
Failure
Circuit A Suction
Pressure Transducer
Failure
Circuit B Suction
Pressure Transducer
Failure
Comp A1 Oil Pressure Transducer
Failure
Comp A2 Oil Pressure Transducer
Failure
Comp B1 Oil Pressure Transducer
Failure
Comp B2 Oil Pressure Transducer
Failure
Circuit A Economizer
Pressure Transducer
Failure – 1
Circuit A Economizer
Pressure Transducer
Failure – 2
Circuit B Economizer
Pressure Transducer
Failure – 1
Circuit B Economizer
Pressure Transducer
Failure – 2
Circuit A Loss of
Charge
Circuit B Loss of
Charge
WHY WAS THIS ALARM
GENERATED?
Average of compressor B1
and B2 (if installed)
sensors > 210° F for
30 seconds.
Thermistor outside range of
–40 to 240 F (–40 to 116 C)
ACTION TAKEN BY
CONTROL
Circuit B shut down
Reset disabled. Runs
under normal control/
set points.
Thermistor outside range of
Reset disabled. Runs
–40 to 240 F (–40 to 116 C)
under normal control/
set points.
Thermistor outside range of – Comp A1 shut down
40 to 240° F (–40 to 116° C)
Thermistor outside range of – Comp A2 shut down
40 to 240° F (–40 to 116° C)
Thermistor outside range of – Comp B1 shut down
40 to 240° F (–40 to 116° C)
Thermistor outside range of – Comp B2 shut down
40 to 240° F (–40 to 116° C)
Thermistor outside range of
–40 to 240 F (–40 to 116 C)
Voltage ratio more than
98.9% or less than 6%.
Breaks Dual Chiller
link if set up for Parallel operation.
Circuit A shut down
Voltage ratio more than
98.9% or less than 6%.
Circuit B shut down
Voltage ratio more than
99.9% or less than 0.5% for
50 seconds.
Voltage ratio more than
99.9% or less than 0.5% for
50 seconds.
Voltage ratio more than
98.9% or less than 6%.
Circuit A shut down
Voltage ratio more than
98.9% or less than 6%.
Comp A2 shut down
Voltage ratio more than
98.9% or less than 6%.
Comp B1 shut down
Voltage ratio more than
98.9% or less than 6%.
Comp B2 shut down
Voltage ratio more than
99.9% or less than 0.5% for
50 seconds.
Economizer pressure is more
than 12 psi (83 kPa) less than
suction pressure.
Voltage ratio more than
99.9% or less than 0.5% for
50 seconds.
Economizer pressure is more
than 12 psi (83 kPa) less than
suction pressure.
Discharge pressure reading
< 10 psig for 30 seconds.
Discharge pressure reading
< 10 psig for 30 seconds.
Circuit A shut down
45
Circuit B shut down
Comp A1 shut down
Circuit A shut down
Circuit B shut down
Circuit B shut down
Circuit A shut down
Circuit B shut down
RESET
METHOD
Manual
PROBABLE CAUSE
Thermistor failure, damaged
cable/wire, wiring error or
motor cooling solenoid failure.
Automatic Thermistor failure, damaged
cable/wire, wiring error or sensor not installed.
Automatic Thermistor failure, damaged
cable/wire, wiring error or sensor not installed.
Automatic Thermistor failure, damaged
cable/wire, wiring error or
motor cooling solenoid failure.
Automatic Thermistor failure, damaged
cable/wire, wiring error or
motor cooling solenoid failure.
Automatic Thermistor failure, damaged
cable/wire, wiring error or
motor cooling solenoid failure.
Automatic Thermistor failure, damaged
cable/wire, wiring error or
motor cooling solenoid failure.
Automatic Thermistor failure, damaged
cable/wire, wiring error or sensor not installed.
Automatic Transducer failure, poor connection to MBB, or wiring
damage/error.
Automatic Transducer failure, poor connection to MBB, or wiring
damage/error.
Automatic Transducer failure, poor connection to MBB, or wiring
damage/error.
Automatic Transducer failure, poor connection to MBB, or wiring
damage/error.
Automatic Transducer failure, poor connection to SCB, or wiring
damage/error.
Automatic Transducer failure, poor connection to SCB, or wiring
damage/error.
Automatic Transducer failure, poor connection to SCB, or wiring
damage/error.
Automatic Transducer failure, poor connection to SCB, or wiring
damage/error.
Automatic Transducer failure, poor connection to SCB, or wiring
damage/error.
Manual
Suction and Economizer pressure connectors/wiring are
swapped.
Automatic Transducer failure, poor connection to SCB, or wiring
damage/error.
Manual
Suction and Economizer pressure connectors/wiring are
swapped.
Manual
Refrigerant leak or transducer
failure.
Manual
Refrigerant leak or transducer
failure.
Table 32  Alarm and Alert Codes (cont)
ALARM/
ALARM OR
DESCRIPTION
ALERT CODE
ALERT
T120
Alert
Circuit A Low
Saturated Suction
Temperature
WHY WAS THIS
ALARM GENERATED?
SST reads 6° F (3.3° C) or
more below the brine freeze
point for 3 minutes or 28° F
below brine freeze point for
2 minutes.
SST reads 6° F (3.3° C) or
more below the brine freeze
point for 3 minutes or 28° F
below brine freeze point for
2 minutes.
After first 90 seconds, SST
> 55 F (12.8 C) and EXV
< 1% for 5 minutes.
After first 90 seconds, SST
> 55 F (12.8 C) and EXV
< 1% for 5 minutes.
Level switch input open.
ACTION TAKEN BY
CONTROL
Circuit A shut down
RESET
METHOD
Manual†
Circuit B shut down
Manual†
Low refrigerant charge,
plugged strainer, faulty expansion valve, or low water flow.
Circuit A shut down
Manual
Faulty expansion valve or
transducer.
Circuit B shut down
Manual
Faulty expansion valve or
transducer.
Circuit A shut down
after 4th failure in
18 hours.
Circuit B shut down
after 4th failure in
18 hours.
Circuit A shut down.
Manual
T121
Alert
Circuit B Low
Saturated Suction
Temperature
T122
Alert
T123
Alert
T124
Alert
Circuit A High
Saturated Suction
Temperature
Circuit B High
Saturated Suction
Temperature
Circuit A Low Oil
Level/Flow
T125
Alert
Circuit B Low Oil
Level/Flow
Level switch input open.
T126
Alert
Circuit A High Discharge Pressure
SCT > MCT_SP + 5° F
(2.8° C)
T127
Alert
Circuit B High Discharge Pressure
SCT > MCT_SP + 5° F
2.8° C)
A128
Alarm
For water cooled chillers only, Chiller shut down.
if SCT < 34 F (1.1° C)
Turns condenser pump
On if Chiller is Off.
A129
Alarm
T135
Alert
Circuit A Condenser
Freeze Protection
(alarm ignored for
brine chillers)
Circuit B Condenser
Freeze Protection
(alarm ignored for
brine chillers)
Circuit A Failure to
Pump Out
T136
Alert
Circuit B Failure to
Pump Out
T137
Alert
Circuit A Low Discharge Superheat
With EXV closed, SST did not None
drop 10° F (5.6° C) in 6 minutes, or SST is not 6° F
(3.3° C) less than Brine
Freeze, or SST is not less
than 10 F (–12 C).
With EXV closed, SST did not None
drop 10° F (5.6° C) in 6 minutes, or SST is not 6° F
(3.3° C) less than Brine
Freeze, or SST is not less
than 10 F (–12 C).
Superheat < 5° F (2.8° C) for Circuit A shut down
10 minutes.
T138
Alert
Circuit B Low Discharge Superheat
Superheat < 5° F (2.8° C) for
10 minutes.
Circuit B shut down
Manual
T140
Alert
Compressor A1 –
High Oil Filter Pressure Drop
None
Manual
T141
Alert
Compressor A2 –
High Oil Filter Pressure Drop
Oil filter pressure drop
(FD.A1) exceeds 25 psig
172 kPa) for water-cooled
units or 30 psig (207 kPa) for
air-cooled and split system
units.
Oil filter pressure drop
(FD.A2) exceeds 25 psig
(172 kPa) for water-cooled
units or 30 psig (207 kPa) for
air-cooled and split system
units.
None
Manual
Circuit B shut down.
For water cooled chillers only, Chiller shut down.
if SCT < 34 F (1.1° C)
Turns condenser pump
On if Chiller is Off.
46
PROBABLE CAUSE
Low refrigerant charge,
plugged strainer, faulty expansion valve, or low water flow.
Low oil level, failed switch,
wiring error, failed control
module.
Manual
Low oil level, failed switch,
wiring error, failed control
module.
Automatic** Faulty transducer/high pressure switch, low/restricted
condenser air/water flow††
Automatic** Faulty transducer/high pressure switch, low/restricted
condenser air/water flow††
Automatic Failed/bad discharge pressure transducer, refrigerant
leak, configured for watercooled condenser.
Automatic Failed/bad discharge pressure transducer, refrigerant
leak, configured for watercooled condenser.
Manual
Faulty transducer or EXV.
Manual
Faulty transducer or EXV
Manual
Faulty thermistor, transducer,
EXV, or Economizer TXV.
Motor cooling solenoid stuck
open.
Faulty thermistor, transducer,
EXV, or Economizer TXV.
Motor cooling solenoid stuck
open.
Filter change needed to prevent machine from shutting
down.
Filter change needed to prevent machine from shutting
down.
Table 32  Alarm and Alert Codes (cont)
ALARM/ALERT ALARM OR
WHY WAS THIS
DESCRIPTION
CODE
ALERT
ALARM GENERATED?
T142
Alert
Compressor B1 –
Oil filter pressure drop
High Oil Filter Pressure (FD.B1) exceeds 25 psig
Drop
(172 kPa) for water-cooled
units or 30 psig (207 kPa) for
air-cooled and split system
units.
T143
Alert
Compressor B2 –
Oil filter pressure drop
High Oil Filter Pressure (FD.B2) exceeds 25 psig
Drop
(172 kPa) for water-cooled
units or 30 psig (207 kPa) for
air-cooled and split system
units.
A150
Alarm
Unit is in Emergency
CCN command received to
Stop
shut unit down
A151
Alarm
Illegal Configuration-x Illegal Configuration has
been entered. Correction
needed.
A152
Alarm
Circuit A&B Off for
Control has shut down both
Alerts. Unit down.
circuits due to alerts.
T153
Alert
Real Time Clock Hard- Time not advancing on
ware Failure
board,
A154
Alarm
Serial EEPROM Hard- Internal failure of the
ware Failure
EEPROM.
A155
Alarm
Serial EEPROM Stor- Internal diagnostic has found
age Failure Error
an error on critical data.
A156
Alarm
A157
Alarm
A159
Alarm
A172
Alarm
T173
Alert
T174
Alert
T175
Alert
T176
Alert
T177
Alert
A178
Alarm
A180
Alarm
A181
Alarm
Critical Serial
Internal diagnostic has found
EEPROM Storage Fail- an error on critical data.
ure Error
A/D Hardware Failure A/D converter on the MBB
has failed.
Loss of Condenser
Flow switch not closed within
Flow
1 minute after pump is
started or if flow switch opens
during normal operation for
> 10 sec.
Loss of CommunicaMBB has lost communication
tion with EXV Module with the EXV Module
ACTION TAKEN BY
CONTROL
None
None
Chiller shut down
Chiller cannot start.
RESET
PROBABLE CAUSE
METHOD
Manual Filter change needed to prevent machine from shutting
down.
Manual
Filter change needed to prevent machine from shutting
down.
CCN/
Network command
Automatic
Manual Configuration error.
See Table 33.
None
Automatic Check individual alarms.
Defaults to occupied
Automatic Time clock not initialized or
board fail
Manual Replace Main Base Board.
Machine shuts down
Machine shuts down
Manual
Machine shuts down
Manual
Re-download the software of
consider replacement of the
Main Base Board.
Replace Main Base Board.
Machine shuts down
Manual
Replace Main Base Board.
Chiller shut down.
Manual
Low condenser water flow,
failed condenser pump.
Automatic Failed EXV Module, wiring
error, loose connections, failed
transformer, wrong address.
Loss of CommunicaMBB has lost communication EMM options are
Automatic Failed EMM, wiring error, loose
tion with Energy Man- with the Energy Management disabled.
connections, failed transformer,
agement Module
Module when this option is
wrong address, wrong configuinstalled.
ration.
4-20 mA Cool Setpoint If configured and input signal Function disabled.
Automatic Faulty signal generator, wiring
Input Failure
to EMM less than 2 mA or
Normal set point used.
error, loss of signal
greater than 22 mA.
4-20 mA Heat Setpoint If configured and input signal Function disabled.
Automatic Faulty signal generator, wiring
Input Failure
to EMM less than 2 mA or
Normal set point used.
error, loss of signal
greater than 22 mA.
4-20 mA Reset Input
If configured and input signal Reset function disAutomatic Faulty signal generator, wiring
Out of Range
to EMM less than 2 mA or
abled. Normal set
error loss of signal
greater than 22 mA.
point used.
4-20 mA Demand Limit If configured and input signal Reset function disAutomatic Faulty signal generator, wiring
Input Out of Range
to EMM less than 2 mA or
abled. Normal set
error, loss of signal
greater than 22 mA.
point used.
Loss of CommunicaMBB has lost communication Chiller shut down.
Automatic Failed SCB Module, wiring
tion with Screw Chiller with the Screw Chiller Module
error, loose connections, failed
Module
transformer, wrong address.
Loss of CommunicaMBB has lost communication Chiller shut down.
Automatic Failed CCP Module, wiring
tion with Compressor
with the Compressor Protecerror, loose connections, failed
Protection Module 1
tion Module 1
transformer, wrong address.
Loss of CommunicaMBB has lost communication Chiller shut down.
Automatic Failed CCP Module, wiring
tion with Compressor
with the Compressor Protecerror, loose connections, failed
Protection Module 2
tion Module 2
transformer, wrong address.
47
Chiller shut down.
Table 32  Alarm and Alert Codes (cont)
ALARM/ALERT ALARM OR
DESCRIPTION
CODE
ALERT
T182
Alert
Compressor Protection Module 1 Internal Diagnostic
T183
Alert
Compressor Protection Module 2 Internal Diagnostic
T184
Alarm
T185
Alarm
A200
Alarm
A201
Alarm`
Compressor Protection Module 1
Compressor Protection Module 2
Cooler Pump Interlock Failed at
Start-Up
Cooler Pump Interlock Opened
Unexpectedly
A202
Alarm
Cooler Pump Interlock Closed When
Pump OFF
T203
Alert
Loss of Communication with the Slave
Chiller
T204
Alert
T205
Alert
T206
Alert
A207
Alarm
T210
Alert
T950
Alert
Loss of Communication with WSM
A951
Alarm
T998
Alert
Loss of Communication with Chillervisor
System Manager
(CSM)
Loss of Refrigerant
Flow in Circuit A.
T999
Alert
WHY WAS THIS
ALARM GENERATED?
The ComfortLink™ Compressor Protection Module has
generated an internal diagnostic alert.
The ComfortLink Compressor Protection Module has
generated an internal diagnostic alert.
CCP has experienced too
many power cycles***
CCP has experienced too
many power cycles***
Interlock did not close within
5 minutes after chiller was
enabled
Interlock opened for at least
10 seconds during operation
and does not close within
5 min.
Interlock closed when pump
relay is off
The master chiller (when configured) has lost communication with the slave chiller for
3 minutes.
Loss of Communica- The slave chiller (when contion with the Master
figured) has lost communicaChiller
tion with the master chiller for
3 minutes.
Master and Slave
The master chiller (when conChiller with Same
figured) has determined that
Address
its address is the same as the
slave address.
High Leaving Chilled LCW read > LCW Delta Alarm
Water Temperature
limit and total capacity is
100% and current LCW >
LCW reading 1 minute ago
Cooler Freeze Protec- Cooler EWT or LWT less than
tion
freeze point. Freeze point is
the brine freeze setpoint +2 F
(1.1 C).
Winterization
SCT<32 F in either circuit
Required
Loss of Refrigerant
Flow in Circuit B.
No communications have
been received by the MBB
within 5 minutes of
transmission.
No communications have
been received by the MBB
within 5 minutes of last
transmission.
Between 40 and 90 seconds
of runtime, SST is less than
0° F (–18 C) and the rate of
change is negative (in 5 second increments).
ACTION TAKEN BY
CONTROL
Affected compressors
are shut down.
Affected compressors
are shut down.
Chiller shut down
Chiller shut down
Chiller shut down.
Pump turned off.
RESET
PROBABLE CAUSE
METHOD
Manual on Eliminate EMI sources around
CCP and the module, consider replaceMBB
ment of the CCP module if
alerts continue.
Manual on Eliminate EMI sources around
CCP and the module, consider replaceMBB
ment of the CCP module if
alerts continue.
Manual Loose connections, frequent
power interruptions.
Manual Loose connections, frequent
power interruptions.
Manual Failure of cooler pump, cooler
pump interlock, or flow switch
Chiller shut down.
Pump turned off.
Manual
Cooler pump remains
off. Unit prevented from
starting.
Manual
Master chiller runs as a
stand-alone chiller.
Slave chiller runs as a
stand-alone chiller.
Dual chiller control disabled.
Failure of cooler pump relay or
interlock, welded contacts.
Cooler pump enabled but mot
controlling pump
Automatic Failed Slave MBB Module, wiring error, loose connections,
wrong address, loss of control
power on slave chiller.
Automatic Failed Master MBB Module,
wiring error, loose connections, wrong address, loss of
control power on master chiller.
Automatic Master and Slave chiller must
have different addresses.
None.
Automatic Building load greater than unit
capacity, low water/brine flow,
or compressor fault. Check for
other alarms or alerts.
Chiller shut down.
Automatic† Faulty thermistor, low water
Leave Cooler pump on.
flow
Turn Cooler pump on if
Chiller is off.
None
Manual Winterization must be performed to avoid cooler freezeup. After winterization has been
completed, configure W.DNE
Winterization Performed (Configuration Mode, Sub-mode
SERV) to YES to reset alert.
WSM forces removed. Automatic Failed module, wiring error,
Runs under own
failed transformer, loose concontrol.
nection plug, wrong address
CSM forces removed.
Runs under own
control.
Automatic Wiring faulty or module failure
Circuit A compressor is
shut down.
Manual
Between 40 and 90 seconds Circuit B compressor is
of runtime, if SST is less than shut down.
0° F (–18 C) and the rate of
change is negative (in 5 second increments).
Manual
48
Failure of cooler pump, cooler
pump interlock, or flow switch
Refrigerant restriction such as
closed suction service valve,
closed liquid line service valve,
faulty liquid line solenoid valve,
faulty EXV/Economizer operation, plugged refrigerant
strainer, closed discharge line
valve.
Refrigerant restriction such as
closed suction service valve,
closed liquid line service valve,
faulty liquid line solenoid valve,
faulty EXV/Economizer operation, plugged refrigerant
strainer, closed discharge line
valve.
LEGEND AND NOTES FOR TABLE
A/D
CCN
CCP
EMI
EMM
EWT
EXV
HPS
LCW
LWT
MBB
MCT_SP
MTA
SCB
SCT
SST
TXV
WSM
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
LEGEND
Analog to Digital Converter
Carrier Comfort Network
ComfortLink™ Compressor Protection
Electromagnetic Interference
Energy Management Module
Entering Water Temperature
Electronic Expansion Valve
High-Pressure Switch
Leaving Chilled Water
Leaving Water Temperature
Main Base Board
Maximum Condensing Temperature Set Point
Compressor Must Trip Amps
Screw Compressor Board
Saturated Condensing Temperature
Saturated Suction Temperature
Thermostatic Expansion Valve
Water-System Manager
NOTES:
1. Low Oil Pressure Alert Criteria and Set Points
Where: Pd = Discharge Pressure, Ps = Suction Pressure.
Po = Oil Pressure and Pe = Economizer Pressure
Two oil set points are used by the control for the Low Oil Pressure
alert trip.
Oil Set Point 1 is defined as:
a. If Ps < 35, then Oil Set Point 1 = 10 psig.
b. If Ps > 35 and < 51, then Oil Set Point 1 = 12.5 psig.
c. If Ps  51, then Oil Set Point 1 = 15 psig.
Oil Set Point 2 (see Fig. 20) is defined as:
a. If (Pd – Ps) < 125, then Oil Set Point 2 = 0.235 x (Pd – Ps) +
0.588
b. If (Pd – Ps) > 125 and < 165, then Oil Set Point 2 = 2.0 x
(Pd – Ps) – 220.0
c. If (Pd – Ps) 165 then Oil Set Point 2 = 0.6364 x (Pd – Ps) +
5.0
2. (Po – Pe) is the Oil pressure differential displayed as items DO.A1
and DO.A2 (Pressures mode under sub-mode PRC.A) for
Circuit A and DO.B1 and DO.B2 (Pressures mode under submode PRC.B) for Circuit B.
3. Alert criteria is based on operating time.
a. On time less than 5 seconds oil pressure is ignored.
b. On time between 5 and 120 seconds, the alert will be generated if the following condition is true for 3 consecutive readings:
(Po – Pe) < [15 psig/120 sec.] x [Compressor Run Time in sec.]
c. On time greater than 120 seconds the alarm will be generated
if one of the following conditions is true:
(Po – Pe) < Oil Set Point 1 for 15 seconds.
(Po – Ps) < Oil Set Point 2 for 15 seconds.
*Compressors are equipped with 2 motor winding temperature
thermistors. Verify first that the problem is not a wiring error
before using backup thermistor.
†Manual reset after 1 hour from occurrence.
**Reset automatic first time, manual if repeated on the same date.
††Note that the high-pressure switch should trip before this alert is
generated. Check HPS operation if this alert is generated.
***Maximum 5 power losses at CCP in one hour.
180
160
OIL PRESSURE SET POINT 2, PSIG
140
120
100
80
60
40
20
0
0
10
20
30 40
50 60 70
80
90 100 110 120 125 130 140 150 160 165 170 180 190 200 210 220 230 240
(DISCHARGE-SUCTION) PRESSURE, PSI
Fig. 20 — Oil Pressure Set Point 2 Calculation
Table 33 — Illegal Configurations (Alarm A151)
CODE NUMBER
1
2
3
4
5
6
7
8
ILLEGAL CONFIGURATION DESCRIPTION
Unit type outside range of 1-5
Number of compressors in Circuit A outside range of 1-2
Number of compressors in Circuit B outside range of 1-2
Invalid FAN.S or HPCT Selection
Air-cooled chiller with Low Temperature Brine fluid (FLUD = Low Brine)
Water-cooled chiller configured for air-cooled head pressure control type (HPCT)
Air-cooled chiller with condenser pump control enabled
Air-cooled chiller with condenser fluid sensors enabled
49
INSPECTING/OPENING ELECTRONIC EXPANSION
VALVES
EXV Troubleshooting Procedure — Follow steps
below to diagnose and correct EXV/Economizer problems.
Check EXV motor operation first. Switch the Enable/Off/
Remote (EOR) Contact switch to the Off position. Press ESCAPE
on the Navigator until ‘Select a menu item’ appears on the display. Use the arrow keys to select the Service Test mode. Press
ENTER . The display will be:
> TEST
OFF
OUTS
COMP
IMPORTANT: Obtain replacement O-ring before opening EXV. Do not reuse O-rings.
To check the physical operation of an EXV, the following
steps must be performed.
1. Close the liquid line service valve of the circuit to be
checked. Put the Enable/Off/Remote Contact switch in
the Off position. Using the Navigator, enter the Service
Test mode and change the sub-mode TEST from ‘OFF’
to ‘ON’. Switch the EOR switch to the Enable position.
Under the COMP sub-mode, enable the desired compressor (CC.xx) for the circuit. Let compressor run until gage
on suction pressure port reads 10 psig. Press ENTER ,
and ENTER to turn the compressor off. The compressor will
complete its pumpout routine and turn off. Immediately
after the compressor shuts off, close the discharge valve.
Press ENTER (password entry may be required) and use
to change ‘OFF’ to ‘ON’. Switch the EOR switch to
Enable. The Service Test mode is now enabled. Move the
pointer down to the OUTS sub-mode and press ENTER . Move the
pointer to item EXV.A or EXV.B as needed. Press ENTER and
the valve position will flash. Use
to select 100% valve
position (hold
for quick movement) and press ENTER .
2. Remove any remaining refrigerant from the system low
side using proper reclaiming techniques. Drain oil from
cooler using Schrader port in cooler inlet line. Turn off
the line voltage power supply to the compressors and
control circuit power.
3. The expansion valve motor is hermetically sealed inside
the top portion of the valve. Carefully unscrew the large
retaining nut securing the motor portion to the body of the
valve making sure the EXV plug is still connected. The
EXV lead screw and sleeve will come off with the motor
portion of the device.
4. Enter the appropriate EXV test step under the OUTS submode in the Service Test mode. Locate the desired item
‘EXV.A’ or ‘EXV.B’. Press ENTER to make the valve position of 0% flash. Press and hold
until 100% is
displayed and press ENTER . Observe the operation of the
lead screw and sleeve. The motor should be turning the
lead screw and sleeve counterclockwise, raising the
sleeve closer to the motor. Lead screw movement should
be smooth and uniform from fully closed to fully open
position. Press ENTER , use
to select 0% and press ENTER
again to check open to closed operation. If the valve is
properly connected to the processor and receiving correct
signals, yet does not operate as described above, the
sealed motor portion of the valve should be replaced.
You should be able to feel the actuator moving by placing
your hand on the EXV. A sight glass is located on the valve
body to verify that the sleeve is moving to expose/cover slots in
the orifice. A hard knocking should be felt from the actuator
when it reaches the top of its stroke (can be heard if surroundings are relatively quiet). Press ENTER again twice if necessary to
confirm this. To close the valve, press ENTER , select 0% with
and press ENTER . The actuator should knock when it reaches
the bottom of its stroke. If it is believed that the valve is not
working properly, continue with the checkout procedure
below:
Check the EXV output signals at appropriate terminals on
the EXV module (see Fig. 21). Connect positive test lead to red
wire (EXV-J6 terminal 3 for Circuit A, EXV-J7 terminal 3 for
Circuit B). Set meter to approximately 20 vdc. Using the
Service Test procedure above, move the valve output under test
to 100%. DO NOT short meter leads together or pin 3 to any
other pin as board damage will occur. During the next several
seconds, carefully connect the negative test lead to pins 1,2,4
and 5 in succession (plug J6 for Circuit A, plug J7 for Circuit
B). Digital voltmeters will average this signal and display approximately 6 vdc. If it remains constant at a voltage other than
6 VDC or shows 0 volts, remove the connector to the valve and
recheck.
The EXV motor moves at 300 steps per second. Commanding the valve to either 0% or 100% will add 7500 steps to the
move. For example, if the EXV is fully closed, selecting 100%
would allow 75 seconds for the dc voltage to be checked
(15,000/300 + 7500/300).
Press ENTER and select 0% to close the valve. Check the 4 position DIP switch on the board (all switches should be set to
On). If a problem still exists, replace the EXV module. If the
reading is correct, the expansion valve and EXV wiring should
be checked. Check the EXV terminal strip and interconnecting
wiring.
1. Check color coding and wire connections. Make sure
they are connected to the correct terminals at the EXV
driver and EXV plug and that the cables are not crossed.
2. Check for continuity and tight connection at all pin
terminals.
Check the resistance of the EXV motor windings. Remove
the EXV module plug (J6 for Circuit A, J7 for Circuit B) and
check the resistance of the two windings between pins 1 and 2
for one winding and pins 4 and 5 for the other winding (see
Fig. 21). The resistance should be 75 ohms ± 7.5 ohms.
Fig. 21 — EXV Cable Connections to EXV Module
50
BRAZED-PLATE ECONOMIZERS — Brazed-plate economizers are factory-installed in each circuit on 30GXN,R108,
118-350 and 30HXA,C161-271 models. A TXV is included to
meter the flow of refrigerant to the economizer port of the
compressor. Flow through the TXV is enabled only when the
circuit is fully loaded for 30GXN,R models. The TXV bulb is
secured to the side of the economizer outlet tube. See Fig. 22
for typical piping arrangement.
Brazed-plate heat exchangers cannot be repaired if they develop a leak. If a refrigerant leak is detected, the heat exchanger
must be replaced. To replace a brazed-plate heat exchanger the
following steps must be performed:
1. Using proper techniques, move the refrigerant remaining
in the circuit to the high side and close the discharge and
liquid line ball valves. Reclaim any refrigerant remaining
in the low side.
2. Un-solder the refrigerant-in and refrigerant-out connections.
3. Remove the four 8mm (1/4-20 on 30HX units) nuts
holding the heat exchanger to the brackets. Save the nuts
and hardware.
4. Check that the replacement heat exchanger is the same as
the original heat exchanger.
5. Insulate the new heat exchanger to match the original and
attach to the mounting brackets with the hardware
removed in Step 3.
6. Carefully braze the refrigerant lines to the connections on
the heat exchanger. Lines should be soldered using silver
as the soldering material with a minimum of 45% silver.
Keep the temperature below 1472 F (800 C) under
normal soldering conditions (no vacuum) to prevent the
copper solder of the brazed plate heat exchanger from
changing its structure. Failure to do so can result in internal or external leakage at the connections which cannot
be repaired.
7. Braze equalizer line in place if removed. Attach economizer and motor cooling solenoid coils to their bodies if
removed.
8. Dehydrate and recharge the circuit. Check for leaks.
NOTE: The brazed-plate heat economizers are not serviceable.
If operating problems persist after economizer replacement,
they may be due to a bad liquid level sensor, suction pressure
transducer, discharge gas thermistor or intermittent connections
between the processor board terminals and EXV plug. Recheck
all wiring connections and voltage signals.
Other possible causes of improper refrigerant flow control
could be restrictions in the liquid line. Check for plugged
strainer(s) or restricted metering slots in the EXV (see Fig. 23).
Formation of ice or frost on lower body of electronic expansion
valve is one symptom of restricted metering slots. However,
frost or ice formation is normally expected when leaving fluid
temperature from the cooler is below 40 F (4.4 C). Clean or replace valve if necessary.
NOTE (non-economized units only): Frosting of valve is
normal during compressor test steps and at initial start-up.
Frost should dissipate after 5 to 10 minutes operation in a
system that is operating properly. If valve is to be replaced,
wrap valve with a wet cloth to prevent excessive heat from
damaging internal components.
EQUALIZER
LINE
MOTOR
COOLING
SOLENOID
TXV
SOLENOID
TXV
BULB
ECONOMIZER
TXV
EXV
BRAZED
PLATE
ECONOMIZER
COOLER
FEED
Fig. 22 — Brazed-Plate Economizer
STRAIN RELIEF
SEAL CAP
MOTOR ASSEMBLY
SLEEVE
SIGHTGLASS
ORIFICE
Torque Specifications
ITEM
Sight Glass
Seal Cap
ft-lb
15-25
18-22
n-m
20-34
24-30
Fig. 23 — Typical 30GXN,GXR,HX EXV
51
SERVICE
Servicing Coolers and Condensers — When cool-
er heads and partition plates are removed, tube sheets are
exposed showing the ends of tubes. The 30GXN,GXR,HX
units use a flooded cooler design. Water flows inside the tubes.
TUBE PLUGGING — A leaky tube in one circuit can be
plugged until retubing can be done. The number of tubes
plugged determines how soon the cooler must be retubed. All
tubes in the 30GXN,R and 30HX coolers and 30HX condensers can be removed. Loss of unit capacity and efficiency as
well as increased pump power will result from plugging tubes.
Failed tubes should be replaced as soon as possible. Up to 10%
of the total number of tubes can be plugged before retubing is
necessary. Figure 24 shows an Elliott tube plug and a crosssectional view of a plug in place. The same components for
plugging and rolling tubes can be used for all coolers and
30HXC condensers. See Table 34. If tube failure is in both
circuits, using tube plugs will not correct problem. Contact
your Carrier representative for assistance.
PIN
TUBE SHEET
PIN
Use extreme care when installing plugs to prevent damage
to the tube sheet section between the holes.
PIN AND RING INSTALLED
Fig. 24 — Tube Plugging
TIGHTENING COOLER/CONDENSER HEAD BOLTS
O-Ring Preparation — When reassembling cooler and condenser heads, always check the condition of the O-ring(s) first.
The O-ring should be replaced if there are any visible signs of
deterioration, cuts or damage. Apply a thin film of grease to the
O-ring before installation. This will aid in holding the O-ring
into the groove while the head is installed. Torque all bolts
to the following specification and in the sequence shown in
Fig. 25.
3/ -in. Diameter Perimeter and
4
Plate Bolts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 to 225 ft-lb
(271 to 305 N-m)
1. Install all bolts finger tight.
2. Follow numbered sequence shown for head type being
installed. This will apply even pressure to the O-ring.
3. Apply torque in one-third steps until required torque is
reached. Load all bolts to each one-third step before
proceeding to the next one-third step.
4. No less than one hour later, retighten all bolts to required
torque values.
5. Restore water/brine flow and check for leaks. Fix leaks as
necessary. Replace insulation (on cooler heads only).
Table 34 — Plugging Components
PART NUMBER
853103-1*
853002-640* or -657†
853103-1A*
853002-738*
S82-112/11
No. 675**
“N”**
Inspecting/Cleaning Heat Exchangers
*Order directly from: Elliott Tube Company, Dayton, Ohio.
†Measure tube ID before ordering.
**Can be obtained locally.
COOLERS — Inspect and clean the cooler tubes at the end of
the first operating season. Because these tubes have internal
ridges, a rotary-type tube cleaning system is necessary to fully
clean the tubes. Tube condition in the cooler will determine the
scheduled frequency for cleaning, and will indicate whether
water treatment is adequate in the chilled water/brine circuit.
Inspect the entering and leaving thermistors for signs of corrosion or scale. Replace the sensor if corroded or remove any
scale if found.
Table 35 — Tube Diameters
ITEM
Tube sheet hole diameter:
Tube OD
Tube ID after rolling:
(includes expansion
due to clearance)
INCHES
0.756
0.750
0.650
to
0.667
TUBE
RING
RETUBING (See Table 35) — When retubing is to be done,
obtain service of qualified personnel experienced in boiler
maintenance and repair. Most standard procedures can be
followed when retubing the 30GXN,R and 30HX heat
exchangers. Care must be taken as the tubes are rolled in the
center tube sheet and require special pulling tools. A 7% crush
is recommended when rolling replacement tubes into the
tubesheet. A 7% crush can be achieved by setting the torque on
the gun at 48 to 50 in.-lb (5.4 to 5.6 N-m).
The following Elliott Co. tube rolling tools are required:
113123 Expander Assembly
213123 Mandrel
2134123 Cage
2115122 Rolls
Place one drop of Loctite No. 675 or equivalent on top of
tube prior to rolling. This material is intended to “wick” into
the area of the tube that is not rolled into the tube sheet, and
prevent fluid from accumulating between the tube and the tube
sheet. New tubes must also be rolled into the center tube sheet
to prevent circuit-to-circuit refrigerant leakage.
COMPONENTS FOR PLUGGING
For Tubes
Brass Pin
Brass Ring
For Holes without Tubes
Brass Pin
Brass Ring
Roller Extension
Loctite
Locquic
RING
MILLIMETERS
19.20
19.05
16.51
to
16.94
NOTE: Tubes replaced along heat exchanger head partitions must
be flush with tube sheet.
52
10
11
9
6
9
5
6
5
NOZZLE
3
2
3
1
4
1
8
11
10
9
3
3
2
2
4
7
14
13
11
9
6
5
6
12
8
7
12
10
5
10
12
16
14
2
NOZZLE
1
12
1
4
14
8
7
8
13
7
13
11
4
15
Fig. 25 — Cooler and Condenser Head Recommended Bolt Torque Sequence
CONDENSERS (30HX Only) — Since this water circuit is
usually an open-type system, the tubes may be subject to
contamination and scale. Clean the condenser tubes with a
rotary tube cleaning system at regular intervals, and more often
if the water is contaminated. Inspect the entering and leaving
condenser water thermistors (if installed) for signs of corrosion
or scale. Replace the sensor if corroded or remove any scale if
found.
Higher than normal condenser pressures, together with inability to reach full refrigeration load, usually indicate dirty
tubes or air in the machine. If the refrigeration log indicates a
rise above normal condenser pressures, check the condenser
refrigerant temperature against the leaving condenser water
temperature. If this reading is more than what the design
difference is supposed to be, then the condenser tubes may be
dirty, or water flow may be incorrect. Due to the pressure in the
R-134a system, air usually will not enter the machine; the
refrigerant will leak out.
During the tube cleaning process, use brushes specially
designed to avoid scraping and scratching the tube wall.
Contact your Carrier representative to obtain these brushes. Do
not use wire brushes.
Water must be within design flow limits, clean and treated
to ensure proper machine performance and reduce the
potential of tubing damage due to corrosion, scaling,
erosion, and algae. Carrier assumes no responsibility for
chiller or condenser damage resulting from untreated or
improperly treated water.
Condenser Coils (30GXN,R only)
COIL CLEANING — For standard aluminum, copper and
pre-coated aluminum fin coils, clean the coils with a vacuum
cleaner, fresh water, compressed air, or a bristle brush (not
wire). Units installed in corrosive environments should have
coil cleaning as part of a planned maintenance schedule. In this
type of application, all accumulations of dirt should be cleaned
off the coil.
Do not use high-pressure water or air to clean coils — fin
damage may result.
CLEANING E-COATED COILS — Follow the outlined procedure below for proper care, cleaning and maintenance of
E-coated aluminum or copper fin coils:
Coil Maintenance and Cleaning Recommendations — Routine cleaning of coil surfaces is essential to maintain proper
operation of the unit. Elimination of contamination and
removal of harmful residues will greatly increase the life of the
coil and extend the life of the unit.
Hard scale may require chemical treatment for its prevention or removal. Consult a water treatment specialist for
proper treatment procedures.
Water Treatment — Untreated or improperly treated water may result in corrosion, scaling, erosion, or algae. The services of a qualified water treatment specialist should be obtained to develop and monitor a treatment program.
53
7. Thoroughly rinse all surfaces with low velocity clean
water using downward rinsing motion of water spray
nozzle. Protect fins from damage from the spray nozzle.
Remove Surface Loaded Fibers — Surface loaded fibers or
dirt should be removed with a vacuum cleaner. If a vacuum
cleaner is not available, a soft brush may be used. In either
case, the tool should be applied in the direction of the fins. Coil
surfaces can be easily damaged (fin edges bent over) if the tool
is applied across the fins.
NOTE: Use of a water stream, such as a garden hose, against a
surface loaded coil will drive the fibers and dirt into the coil.
This will make cleaning efforts more difficult. Surface loaded
fibers must be completely removed prior to using low velocity
clean water rinse.
Periodic Clean Water Rinse — A periodic clean water rinse is
very beneficial for coils that are applied in coastal or industrial
environments. However, it is very important that the water
rinse is made with very low velocity water stream to avoid
damaging the fin edges. Monthly cleaning as described below
is recommended.
Routine Cleaning of Coil Surfaces — Monthly cleaning with
Environmentally Sound Coil Cleaner is essential to extend the
life of coils. It is recommended that all coils, including
standard aluminum, pre-coated, copper/copper or E-coated
coils are cleaned with the Environmentally Sound Coil Cleaner
as described below. Coil cleaning should be part of the units
regularly scheduled maintenance procedures to ensure long life
of the coil. Failure to clean the coils may result in reduced
durability in the environment.
Environmentally Sound Coil Cleaner is non-flammable,
hypoallergenic, non-bacterial, USDA accepted biodegradable
and 100% ecologically safe agent that will not harm the coil or
surrounding components such as electrical wiring, painted
metal surfaces or insulation. Use of non-recommended coil
cleaners is strongly discouraged since coil and unit durability
could be affected.
Environmentally Sound Coil Cleaner Application Equipment
• 21/2 Gallon Garden Sprayer
• Water Rinse with Low Velocity Spray Nozzle
Environmentally Sound Coil Cleaner Application Instructions — Although Environmentally Sound Coil Cleaner is
harmless to humans, animals, and marine life, proper eye protection such as safety glasses is recommended during mixing
and application.
1. Remove all surface loaded fibers and dirt with a vacuum
cleaner as described above.
2. Thoroughly wet finned surfaces with clean water and a
low velocity garden hose being careful not to bend fins.
3. Mix Environmentally Sound Coil Cleaner in a 21/2 gallon
garden sprayer according to the instructions included
with the Enzyme Cleaner. The optimum solution temperature is 100 F.
NOTE: DO NOT USE water in excess of 130 F as the enzymatic activity will be destroyed.
4. Thoroughly apply Environmentally Sound Coil Cleaner
solution to all coil surfaces including finned area, tube
sheets and coil headers.
5. Hold garden sprayer nozzle close to finned areas and
apply cleaner with a vertical, up-and-down motion. Avoid
spraying in horizontal pattern to minimize potential for
fin damage.
6. Ensure cleaner thoroughly penetrates deep into finned
areas. Interior and exterior finned areas must be
thoroughly cleaned. Finned surfaces should remain wet
with cleaning solution for 10 minutes. Ensure surfaces are
not allowed to dry before rinsing. Reapply cleaner as
needed to ensure 10-minute saturation is achieved.
Harsh Chemical and Acid Cleaners — Harsh chemical,
household bleach or acid cleaners should not be used to
clean outdoor or indoors coils of any kind. These cleaners
can be very difficult to rinse out of the coil and can accelerate corrosion at the fin/tube interface where dissimilar
materials are in contact. If there is dirt below the surface of
the coil, use the Environmentally Sound Coil Cleaner as
described above.
High Velocity Water or Compressed Air — High velocity water from a pressure washer, garden hose or
compressed air should never be used to clean a coil. The
force of the water or air jet will bend the fin edges and
increase airside pressure drop. Reduced unit performance
or nuisance unit shutdown may occur.
Condenser Fans (30GXN,R Only) — Each fan is
supported by a formed wire mount bolted to a fan deck and
covered with a wire guard. The exposed end of the fan motor
shaft is protected from weather by grease. If the fan motor must
be removed for service or replacement, be sure to regrease fan
shaft and reinstall fan cover, retaining clips, and fan guard. For
proper performance, the fans should be positioned as shown in
Fig. 26 or 27. Tighten setscrews to 14  1 ft-lb (18  1.3 N-m).
Check for proper rotation of the fan(s) once reinstalled
(clockwise for high static and counterclockwise for standard
viewed from above). If necessary to reverse, switch leads at
contactor(s) in control box.
PLASTIC FAN
PROPELLER
CLEARANCE OF 0.25 INCHES
(6.4 MM) FOR STANDARD
CONDENSER FANS
FAN DECK
SURFACE
FAN ORIFICE
Fig. 26 — Condenser Fan Position (Standard Fan)
MOTOR
SHAFT
FAN HUB
HIGH-STATIC
FAN
PROPELLER
2.15 IN.
FAN DECK
SURFACE
POSITION TOP OF HIGH STATIC FAN PROPELLER HUB
2.15 INCHES (54.6 mm) ABOVE FAN DECK SURFACE
Fig. 27 — Condenser Fan Position
(High-Static Fan)
54
2. At these operating conditions, check the liquid line sight
glass. If there is a clear sight glass, then the unit has
sufficient charge. If the sight glass is flashing, then check
the EXV Percent Open. If this is greater than 60%, then
begin adding charge.
NOTE: A flashing liquid line sight glass at operating
conditions other than those mentioned above is not necessarily an indication of low refrigerant charge.
3. Add 5 lb (2.3 kg) of liquid charge into the cooler using
the fitting located on the tube entering the bottom of the
cooler. This fitting is located between the Electronic
Expansion Valve (EXV) and the cooler.
4. Observe the EXV Percent Open value. The EXV should
begin closing as charge is being added. Allow the unit to
stabilize. If the EXV Percent Open remains above 60%,
and the sight glass continues flashing, add an additional
5 lb (2.3 kg) of liquid charge.
5. Allow the unit to stabilize, and again check the EXV
Percent Open. Continue adding 5 lb (2.3 kg) at a time of
liquid refrigerant charge, and allow the unit to stabilize
before checking the EXV position.
6. When the EXV Percent Open is in the range of 40 to
60%, check the liquid line sight glass. Slowly add enough
additional liquid charge to ensure a clear sight glass. This
should be done slowly to avoid overcharging the unit.
7. Verify adequate charge by continuing to run at full load
with 42 to 46 F (5.6 to 7.8 C) cooler leaving fluid temperature. Check that the refrigerant is not flashing in the
liquid-line sight glass. The EXV Percent Open should be
between 40 and 60%.
To add charge to the 30GX and 30HXA systems:
1. Make sure that the circuit is running at a full load condition and all condenser fans are energized and running on
the keypad, at the appropriate line on the display. To
check whether circuit A is fully loaded, enter the Outputs
mode from the Navigator and then sub-mode ‘CIR.A’ or
‘CIR.B’ depending on the circuit under investigation. The
circuit is fully loaded if its compressor and loader relays
all show ‘On’.
2. It may be necessary to use the Service Test feature to
force the circuit into a full-load condition. If this is the
case, see the instructions for using the Service Test
feature in Table 13 of this manual.
3. With the circuit running at full-load, verify that the cooler
leaving fluid temperature is in the range of 38 to 48 F (5.6
to 7.8 C).
4. For 30HXA chillers, raise the compressor discharge to
approximately 125 F (51.7 C) saturated condensing temperature (185 psig [1276 kPa]). For 30GXN,R chillers,
raise the compressor discharge to approximately 130 F
(54.4 C) saturated condensing temperature (198 psig
[1366 kPa]). Measure the liquid temperature entering the
EXV for 30HXA units. For 30GXN,R units, measure the
liquid temperature after the tee where all liquid lines have
joined (see Fig. 28 and 29). The liquid temperature
should be approximately 107 F (41.7 C) for optimum
charge. If the temperature is greater than 107 F (41.7 C)
and the sight glass is flashing, the circuit is undercharged.
5. Add 5 lb (2.3 kg) of liquid charge into the cooler using
the fitting located on the tube entering the bottom of the
cooler. This fitting is located between the Electronic
Expansion Valve (EXV) and the cooler.
6. Allow the system to stabilize and then recheck the liquid
temperature. Repeat Step 5 as needed allowing the
system to stabilize between each charge addition. Slowly
add charge as the sight glass begins to clear to avoid
overcharging.
Refrigerant Charging/Adding Charge
IMPORTANT: These units are designed for use with
R-134a only. DO NOT USE ANY OTHER REFRIGERANT in these units without first consulting your
Carrier representative.
When adding or removing charge, circulate water through
the condenser (30HXC) and cooler at all times to prevent
freezing. Freezing damage is considered abuse and may
void the Carrier warranty.
DO NOT OVERCHARGE system. Overcharging results
in higher discharge pressure with higher cooling fluid
consumption, possible compressor damage and higher
power consumption.
Indication of low charge on a system:
NOTE: To check for low refrigerant charge on a 30HXC unit,
several factors must be considered. A flashing liquid line sight
glass (located in the EXV body) is not necessarily an indication of inadequate charge. There are many system conditions
where a flashing sight glass occurs under normal operation.
The EXV metering device is designed to work properly under
these conditions.
1. Make sure that the circuit is running at a full-load condition. To check whether circuit A is fully loaded, enter the
Outputs mode from the Navigator and then sub-mode
‘CIR.A’ or ‘CIR.B’ depending on the circuit under investigation. The circuit is fully loaded if its compressor and
loader relays all show ‘On’.
2. It may be necessary to use the Service Test feature to
force the circuit into a full-load condition. If this is the
case, see the instructions for using the Service Test
feature in Table 13 of this manual.
3. With the circuit running at full load, verify that the cooler
leaving fluid temperature is in the range of 38 to 46 F
(3.3 to 7.8 C). Check temperature drop across liquid line
strainer/drier. Maximum allowable temperature drop
is 3° F (1.7° C). Strainer is cleanable if necessary and
contains 1 standard drier core on all 30GX and 30HXA,C
161-271 models.
4. At this condition, observe the refrigerant in the liquid line
sight glass. If there is a clear sight glass, and no signs of
flashing, then the circuit is adequately charged. Skip the
remaining steps.
5. If the refrigerant appears to be flashing, the circuit is
probably low on charge. Verify this by checking the EXV
Percent Open. This information is located under the
sub-mode ‘CIR.A’ or ‘CIR.B’ (Outputs mode) and is
shown as items ‘EXV.A’ and ‘EXV.B’ Scroll through the
Navigator until the desired item is located.
6. If the EXV Percent Open is greater than 60%, and the
liquid line sight glass is flashing, then the circuit is low on
charge. Follow the procedure for adding charge for
30HXC units.
To add charge to the 30HXC systems:
1. Make sure that the unit is running at full load, and that the
cooler leaving fluid temperature is in the range of 42 to
46 F (5.6 to 7.8 C).
55
TEMPERATURE
MEASUREMENT
(CIRCUIT B)
Addition of oil charge to 30HX,GXN,GXR systems:
1. If the 30HX,GXN,GXR unit shuts off repeatedly on Low
Oil Level (Alert number 124 or 125), this may be an
indication of inadequate oil charge. It could also mean
simply that oil is in the process of being reclaimed from
the low-side of the system.
2. Begin by running the unit at full load for 11/2 hours. Use
the Manual Control feature of the software if the unit
does not normally run at full load.
3. After running the unit for 11/2 hours, allow the unit to
restart and run normally. If the Low Oil Level alarms
persist, continue following this procedure.
4. Close the liquid line service valve, and place a pressure
gage on top of the cooler. Enable the Service Test feature
using the Navigator and turn the EOR switch to Enable.
Start the desired compressor by turning it On under the
‘COMP’ sub-mode. Select item ‘CC.A1’ for compressor
A1, ‘CC.B1’ for compressor B1, etc.
5. Before starting the compressor, the unit will go through
its normal pre-lube pump routine. If there is an insufficient level of oil in the oil separator, the compressor will
not start, and a pre-start oil pressure alarm will be posted.
Skip to Step 8.
6. If the compressor starts successfully, observe the cooler
pressure gage. When this gage reads approximately
10 psig, turn the selected compressor Off from the
Navigator and move the EOR switch to the Off position.
7. Open the liquid line service valve and allow the unit to
restart and run normally. If the Low Oil Level alarms
persist, continue following this procedure.
8. If none of the previous steps were successful, the unit is
low on oil charge. Add oil to the oil separator using the
1/ -in. Schrader-type fitting on the discharge line entering
4
the top of the oil separator (30HX units) or through the
Schrader fitting on the top of the oil separator (30GXN,R
units).
MEASUREMENT
LOCATION
(CIRCUIT A)
Fig. 28 — Saturated Liquid Temperature
Measurement (30GXN,R080-150 and 160)
Do not add oil at any other location as improper unit operation may result.
9. Make sure that the unit is not running when adding oil, as
this will make the oil charging process easier. Because the
system is under pressure even when the unit is not running, it will be necessary to use a suitable pump (hand
pump or electric pump) to add oil to the system.
10. Using a suitable pump, add 1/2 gal. (1.89 L) of Castrol
Icematic® SW-220 Polyolester oil (absolutely no substitutes are approved) to the system. Make sure that the oil
level safety switch is NOT jumpered, and allow the unit
to restart and run normally. Do not exceed maximum oil
change. See Table 37.
MEASUREMENT
LOCATION (TYPICAL)
Fig. 29 — Saturated Liquid Temperature
Measurement (30GXN,R153, 163-350)
Oil Charging/Low Oil Recharging
OIL SPECIFICATION — If oil is added, it must meet the
following Carrier specifications:
• Castrol . . . . . . . . . . . . . . . . . . . . . . . . Icematic® SW-220
• Oil type . . . . . . . . . Inhibited polyolester-based synthetic
compressor lubricant for use in screw compressors.
• ISO Viscosity Grade . . . . . . . . . . . . . . . . . . . . . . . . . 220
This oil is available in the following quantities from your
local Carrier representative (see Table 36).
Table 37 — Factory Oil Charges
UNIT
SIZE
30GX080-178
30GX204-268
30GX281-350
30HXA076-186
30HXC076-186
30HXA206-271
30HXC206-271
Table 36 — Available Oil Quantities
and Part Numbers
QUANTITY
1 Quart
1 Gallon
5 Gallons
TOTALINE PART
NUMBER
P903-1225
P903-1201
P903-1205
RCD PART
NUMBER
—
PP23BZ104-001
PP23BZ104-005
56
CIRCUIT
A (gal)
5.0
7.0
7.0
5.0
4.5
8.0
7.5
CIRCUIT
A (L)
18.9
26.5
26.5
18.9
17.0
30.2
28.4
CIRCUIT
B (gal)
5.0
5.0
7.0
5.0
4.5
5.0
5.0
CIRCUIT
B (L)
18.9
18.9
26.5
18.9
17.0
18.9
18.9
shutoff valve (if equipped) for circuit to be changed.
Disconnect the oil inlet line from the compressor. Disconnect oil filter with fitting at shutoff valve side and set
filter and compressor inlet line assembly aside.
3. Remove any remaining refrigerant in the compressor and
refrigerant lines using proper reclaiming techniques. All
of the refrigerant that is in the cooler must be removed if
there is no suction service valve installed on the cooler.
11. If low oil level problems persist, add another 1.89 L
(1/2 gal.) of oil. Continue adding oil in 1.89 L (1/2 gal.)
increments until the problem is resolved. If it is necessary
to add more than 5.75 L (1.5 gallons) of oil to the system,
contact your Carrier representative.
Oil Filter Maintenance — Each compressor has its
own internal oil filter and each circuit also has an in-line external filter. The internal oil filter pressure drop should be checked
and filter changed (if necessary) after the initial 200 to
300 hours of compressor operation. Oil line pressure loss is
monitored by the control and reported for each compressor as
the oil filter pressure drop. This information can be found in the
Pressures mode of the Navigator for each circuit. The ‘PRC.A’
sub-mode contains oil filter pressure differentials for each
Circuit A compressor (items ‘FD.A1’ ‘FD.A2’). Similarly, the
PRC.B sub-mode contains oil filter pressure differentials for
each circuit B compressor (items FD.B1, FD.B2). This pressure differential (discharge pressure minus oil pressure, both
from pressure transducer inputs) is typically 15 to 20 psi
(103 to 138 kPa) for a system with clean internal and external
filters. To determine the oil pressure drop due to the oil lines
and external filter only, connect a gage to the oil pressure bleed
port. Compare this value to the discharge pressure read at the
Navigator. If this value exceeds 10 psi (69 kPa), replace the
external filter. The difference between the gauge pressure and
compressor oil pressure read at the Navigator is the pressure
drop through the internal oil filter. Replace the internal oil filter
if the pressure drop is greater than 25 psi (173 kPa) for 30HXC
and 30 psi (207 kPa) for 30GXN,R and 30HXA chillers.
REPLACING THE EXTERNAL OIL FILTER
IMPORTANT: Cooler and condenser pumps must be
energized. Fluid must be flowing through heat exchangers whenever adding or removing charge.
4. Remove junction box cover of compressor to be changed.
Check main power leads for marked numbers. If no
numbers are visible on leads, mark leads with appropriate
numbers to match those printed on the ends of the
terminal lugs. This is extremely important as power
leads MUST be installed on the exact terminals from
which they were removed.
5. Disconnect main power leads from compressor terminal
lugs. Mark remaining control circuit wires (connected
together with wire nuts) for ease of reconnecting later.
The following color scheme applies (verify with label
diagram on panel):
Loader 1
2 Violet wires
Loader 2
2 Pink wires
Motor Cooling Solenoid 1 Blue wire, 1 Brown wire *
Oil Solenoid
1 Orange wire, 1 Brown wire*
High-Pressure Switch
2 Red wires
*One lead from the motor cooling and oil solenoids are connected together with a single brown wire.
Compressor oil is pressurized. Use proper safety precautions when relieving pressure.
Fully front seat (close) the angle valve on the filter and the
ball valve at the compressor. Connect a charging hose to the oil
pressure bleed port and drain the oil trapped between service
valves. A quart (liter) of oil is typically what is removed during
this process. Remove the charging hose.
Unscrew the nut from the other side of the filter and remove
the old filter. Remove protective plastic caps from new filter
and install. Draw a vacuum at the bleed port. Remove charging
hose. Open angle valve enough to let oil flow. Check both
fittings for leaks and repair if necessary. Backseat angle valve
and open ball valve.
REPLACING THE INTERNAL OIL FILTER — Close the
service valves at the compressor and drain the oil using the
bleed port. If the oil pressure does not bleed off using this
method it will be necessary to remove the entire circuit charge.
Using a 3/4-in. Allen wrench, remove the internal filter access
cover (see Fig. 30). Remove the old filter. Replacement filters
(one for each compressor) are factory supplied to cover the
first changeout. After that, filters are field supplied. Lightly oil
O-ring in the filter and install with filter open end first into the
housing. Replace access cover and retorque to 75 ft-lb
(101 N-m). Follow procedure in previous section for opening
angle valve and purging lines. Check for leaks and repair if
necessary.
Compressor Changeout Sequence — Compressor service requires metric tools and hardware. Change
compressors according to the following procedure:
1. Turn off all main and control circuit power supplying the
machine.
2. Close the discharge and liquid valve(s), suction valve
(if equipped), and cooler inlet line service valve (if
equipped), oil line shutoff valve, and minimum load
Fig. 30 — Compressor Component Diagram
57
13. After checking to ensure all lines, wires, conduits, etc. are
free and out of the way, remove compressor from cooler.
Apply a light film of O-ring grease to new O-ring and
place back into groove in mounting flange of compressor.
If the new compressor is the A1/A2 (30HX units), A2
(30GXN,R204-268 units) or B2 (30GXN,R281-350
units) compressor, remove the compressor junction box
and rotate it 180 degrees. Tighten screws to 6.8 to
9.5 N-m (5 to 7 ft-lb). The A1 and A2 compressors are on
the right side of the unit when facing the unit control box.
14. Remove suction cover plate and bolts from new compressor and set compressor on unit flange. Thread the studs all
the way back into the compressor. Install the 4 lock washers and nuts finger-tight. Tighten bolts in a crossing
pattern to a range of 81.4 to 135.6 N-m (60 to 100 ft-lb).
Do NOT overtighten as damage may result to O-ring.
Install and tighten holddown bolt in mounting foot.
15. Remove motor cooling/economizer and discharge line
cover plates from new compressor.
16. Apply a light film of O-ring grease to motor cooling/
economizer and discharge line O-rings, place back into
grooves and install flange bolts. Tighten discharge line
bolts in a crossing pattern to a range of 81.4 to 135.6 N-m
(60 to 100 ft-lb). Tighten motor cooling/economizer bolts
to a range of 81.4 to 108.5 N-m (60 to 80 ft-lb). Do NOT
overtighten as damage may result to O-rings.
17. Reconnect the oil filter to the shutoff valve and oil line to
the compressor. Install oil line straight into fitting until
ferrule seats against fitting. Thread packing nut onto
fitting and tighten finger tight. Use a backup wrench to
finish tightening the nut. Do not overtighten.
18. Reinstall the loader and oil solenoids, high-pressure
switch, and oil pressure transducer. Make sure the loader
solenoids are installed on the correct number loader.
19. Reconnect conduits back into compressor junction box.
Reconnect all wiring that was removed in Steps 4, 5, and 7.
Temporarily install the reverse rotation low pressure
switch that is supplied with the replacement compressor.
Connect the switch to the second high pressure port using a
standard 1/4-in. service hose. The switch will not reset until
10 psig of pressure is present on the switch. Temporarily
wire the reverse rotation low pressure switch in series with
the compressor’s high pressure switch as shown in Fig. 32.
20. Leak check compressor and refrigerant lines with nitrogen. Repair any leaks found. Remove nitrogen from
system. Evacuate compressor and refrigerant lines. Refer
to the Refrigerant Charging/Adding Charge and Oil
Charging/Low Oil Recharging sections on pages 55 and
56 for recharging procedures.
21. Open all shutoff valves and leak check the circuit and all
fittings and joints. Repair any leaks found.
22. Reset the reverse rotation low pressure switch.
23. Restore main and control power to the machine. Put the
Enable/Off/Remote Contact switch in the Enable position. Using the Navigator under the Service Test mode,
turn the TEST sub-mode ‘On’. Under the OUTS
sub-mode, test each compressor’s oil and motor cooling
solenoids (items ‘MC.A1’, ‘OS.A1’, etc.). Next, locate
and test each loader solenoid under the COMP sub-mode
(items ‘LD.A1’, etc.). It is important that the loaders are
located properly (loader 1 on right hand side when
viewed from side opposite control box on 30HXA,HXC
units, on left hand side when reaching over compressor to
far side on 30GXN,R units).
6. Remove loader (mark solenoids no. 1 and 2 for replacement) and oil solenoids and high-pressure switch from
compressor. Using 2 wrenches, carefully remove the oil
pressure transducer from the compressor. These will all
be reconnected to the replacement compressor.
NOTE: Some oil will leak out of the transducer fitting
when the transducer is removed. See Fig. 30.
7. Mark motor temperature leads (2 blue wires) and remove
from quick connect terminals in the junction box.
The next steps involve compressor unbolting and removal.
Compressor seals are made using O-rings. Use care when
removing bolts and disconnecting flanges. The O-rings
must NOT be re-used. New O-rings are provided with the
replacement compressor. The 06N screw compressors
weigh approximately 920 lb (417 kg). Be sure that an
appropriate lifting cart or hoist is used to avoid injury.
See Fig. 31 for lifting locations and center of gravity
dimensions. Make sure compressor is properly rigged
before unbolting.
8. Remove the 2 bolts securing the motor cooling/economizer line flange to the compressor.
9. Remove the four M14 bolts securing the discharge line
flange to the compressor. Two of the bolts also secure the
mounting bracket for the external oil filter. Support the oil
line to prevent damage to the line while the compressor is
being changed. For 30GX units, place temporary protection over coils to prevent fin and tube damage.
10. Move lifting apparatus into place and attach to the 2 lifting rings on the compressor. Apply minimal tension
to hold the compressor while the remaining bolts are
removed.
11. Remove the 3/8-in. holddown bolt securing the foot at the
discharge end of the compressor to the mounting bracket
on the cooler. A foot bracket will be mounted to the
replacement compressor.
12. Remove the 4 lockwashers and nuts securing the
compressor to the suction flange of the cooler. The compressor is held in place using four M14 x 2 studs through
the suction nozzle of the cooler. The studs have an E-12
external Torx drive head. If possible, remove studs; if
studs hit the cooler insulation, leave them in place — they
will not interfere with compressor removal or installation.
Save all the hardware as it will be needed to install the
replacement compressor.
LIFTING LUGS BOTH OUTSIDE EDGES
EQUIDISTANT FROM GEAR COVER END
COMPRESSOR LIFTING MECHANISM
CENTER OF GRAVITY
OF COMPRESSOR
COMPRESSOR SIDE
MINIMUM
300 mm
(11.8 in.)
MOTOR SIDE
MINIMUM
384 mm
(15.1 in.)
NOTE: Locate strap from center of gravity lifting ring and support
motor casing to provide 3-point level rigging.
Fig. 31 — Compressor Lifting Diagrams
58
HPS
Moisture-Liquid Indicator — Clear flow of liquid
refrigerant indicates sufficient charge in the system. Note,
however, that bubbles in the sight glass do not necessarily indicate insufficient charge. Moisture in the system is measured in
parts per million (ppm), changes of color of indicator are:
Green — moisture is below 80 ppm;
Yellow-green (chartreuse) — 80 to 225 ppm (caution);
Yellow (wet) — above 225 ppm.
Change filter drier at the first sign of moisture in the system.
RRS
LEGEND
HPS — High-Pressure Switch
RRS — Reverse Rotation Switch (HK01CB002)
Fig. 32 — Reverse Rotation Switch Wiring
24. Locate the appropriate compressor item (‘CC.A1’, etc.)
under the COMP sub-mode and start the compressor.
Press ENTER , followed by
to change the value to On,
and then ENTER again. Once the compressor has successfully started, energize both loaders one at a time. Let the
circuit stabilize with both loaders energized. Refer to the
Refrigerant Charging/Adding Charge and Oil Charging/
Low Oil Recharging sections of this document for
recharging procedures and performance criteria.
IMPORTANT: Unit must in operation for at least
12 hours before moisture indicator can give an accurate
reading. With the unit running, the indicating element
must be in contact with liquid refrigerant to give true
reading.
Filter Drier — Whenever moisture-liquid indicator shows
presence of moisture, replace filter drier core. Refer to Carrier
Standards Service Technique Manual, Chapter 1, Refrigerants,
for details on servicing filter driers. Cleanable strainers have
been installed in each circuit’s liquid line to aid in removal of
system contaminants and debris.There is one industry standard
drier core in each strainer. See Fig. 33.
25. Once proper rotation has been verified, disconnect and
lock out the power to the chiller. The reverse rotation low
pressure switch can now be removed from the compressor and high pressure switch circuit.
BURNOUT CLEAN-UP PROCEDURE — If a screw compressor motor burns out on a 30GX,HX chiller, a simple cleanup
should be performed. The following procedure provides the
minimum steps to be taken before restarting the circuit.
1. Remove the oil from the oil separator. This can be facilitated by connecting a hose to the port located on the
service valve entering the external oil filter. Run the hose
to a container(s) that can hold up to 5 to 6 gallons (19 to
20 L) of oil. Pressurize the circuit to force out most of the
oil in the separator. To remove the remaining oil, the
pre-lube pump can be run in the Service Test mode from
the Navigator. Enable the desired pump (either item
‘OL.P.A’ or ‘OL.P.B’ in the OUTS sub-mode). To prevent wear to the pump components, do not allow the prelube pump to operate “dry.”
2. Remove the failed compressor following the Compressor
Changeout Sequence procedure on page 57.
3. Once the compressor is removed access the oil catch pan
through the cooler-compressor mounting flange. Clean
out any debris which may have collected in the oil catch
pan.
4. Install a new compressor.
5. To dilute and remove any residual oil left in the separator,
pump approximately 1/2 gallon (2 L) of compressor oil
into the oil separator using the Schrader port located on
top of the separator (30GXN,R) or on the discharge line
(30HXA,HXC) and remove using the pre-lube pump
described in Step 1.
6. Disconnect the hose from the external oil filter service
valve.
7. Install a new filter drier core and compressor external oil
filter. If desired, a burnout (activated carbon) core may be
used, but should be replaced with a standard filter drier
core during the next filter replacement.
8. Measure in the amount of Castrol SW 220 Polyolester oil
as specified on the nameplate of the chiller.
9. Leak check, evacuate and recharge the machine as
described in this manual with the amount of R-134a
stated on the chiller nameplate.
10. Perform periodic acid checks on the circuit and change
the filter drier core in the liquid line as necessary. Use the
Carrier Standard Service Techniques Manual as a source
of reference.
Liquid Line Service Valve — This valve is located
ahead of the filter drier and provides a 1/4-in. Schrader connection (30GXN,R only) for field charging. In combination with
compressor discharge service valve, each circuit can be
pumped down into the high side for servicing.
Thermistors — To aid in verifying thermistor perfor-
mance, resistances at various temperatures are listed for all
thermistors (except motor thermistors) in Tables 38A-39B. See
Table 40 for motor thermistor values.
LOCATION — General location of thermistor sensors and
terminal connections in the control box are listed in Table 3.
THERMISTOR REPLACEMENT
All thermistors are installed in wells and will slide out of
the wells easily. The wells are under refrigerant pressure
(cooler EWT and LWT are under waterside pressure) and
do not need to be removed to replace a faulty thermistor.
To Replace Thermistors T1, T2, T3, T4, T5, or T6 (Entering, Leaving Water; Discharge Gas Temperature) — Disconnect appropriate connector from the Main Base Board
(MBB) or Screw Compressor Board (SCB). Thermistors T1
and T2 are connected to MBB-J8 and thermistors T3 through
T6 are connected to EXV-J5. These six thermistors use insulation displacement connectors. New thermistors should be
spliced to existing wiring close to the connector unless new
connectors are required. A special AMP crimping tool, part no.
58580-1, is needed if new connectors are used. Remove
thermistor cable from harness. Remove and discard original
thermistor from well. Insert new thermistor in well body to its
full depth. Add a small amount of thermal conductive grease to
thermistor probe and well. Thermistors are friction-fit
thermistors and will slip back into well located at the cooler
head (T1, T2) or at the top of each compressor discharge line
(T3 through T6). Secure thermistor to well body with a wire tie
to prevent thermistor from working its way out of the well. See
Fig. 34.
59
To Service Compressor Motor Thermistors — Two thermistors are factory installed in each compressor. Connections for the
thermistors are located in the compressor junction box. There
are 3 terminals for the thermistors: S1, S2, and C. Motor temperature is measured by leads connected to one of the S terminals
and the C terminal. If a compressor motor thermistor failure
occurs, verify that there is a true short or open circuit at these ter-
minals. If one of the thermistors fails, disconnect and relocate
the wire on one of the S terminals to the other S terminal (S1 to
S2 or S2 to S1). The thermistors are not serviceable in the field.
If both of the compressor motor thermistors fail, compressor
replacement is required. See Table 40 for motor thermistor temperature and resistance values.
DRIER CORE
STRAINER
SCREENS
Fig. 33 — Filter Drier
THERMISTOR JACKETED CABLE
SENSOR TUBE
BEND SLIGHTLY BEFORE WELL INSERTION
4 in.
3/16 in.
Fig. 34 — Thermistor Replacement (T1 through T6)
60
THERMISTOR WELL
Table 38A — 5K Thermistor Temperature (°F) vs Resistance/Voltage
TEMP
(F)
–25
–24
–23
–22
–21
–20
–19
–18
–17
–16
–15
–14
–13
–12
–11
–10
–9
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
VOLTAGE
DROP
(V)
3.699
3.689
3.679
3.668
3.658
3.647
3.636
3.624
3.613
3.601
3.588
3.576
3.563
3.550
3.536
3.523
3.509
3.494
3.480
3.465
3.450
3.434
3.418
3.402
3.386
3.369
3.352
3.335
3.317
3.299
3.281
3.262
3.243
3.224
3.205
3.185
3.165
3.145
3.124
3.103
3.082
3.060
3.038
3.016
2.994
2.972
2.949
2.926
2.903
2.879
2.856
2.832
2.808
2.784
2.759
2.735
2.710
2.685
2.660
2.634
2.609
2.583
2.558
2.532
2.506
2.480
2.454
2.428
2.402
2.376
2.349
2.323
2.296
2.270
2.244
2.217
2.191
2.165
2.138
2.112
2.086
2.060
2.034
2.008
RESISTANCE
(Ohms)
TEMP
(F)
98,010
94,707
91,522
88,449
85,486
82,627
79,871
77,212
74,648
72,175
69,790
67,490
65,272
63,133
61,070
59,081
57,162
55,311
53,526
51,804
50,143
48,541
46,996
45,505
44,066
42,679
41,339
40,047
38,800
37,596
36,435
35,313
34,231
33,185
32,176
31,202
30,260
29,351
28,473
27,624
26,804
26,011
25,245
24,505
23,789
23,096
22,427
21,779
21,153
20,547
19,960
19,393
18,843
18,311
17,796
17,297
16,814
16,346
15,892
15,453
15,027
14,614
14,214
13,826
13,449
13,084
12,730
12,387
12,053
11,730
11,416
11,112
10,816
10,529
10,250
9,979
9,717
9,461
9,213
8,973
8,739
8,511
8,291
8,076
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
VOLTAGE
DROP
(V)
1.982
1.956
1.930
1.905
1.879
1.854
1.829
1.804
1.779
1.754
1.729
1.705
1.681
1.656
1.632
1.609
1.585
1.562
1.538
1.516
1.493
1.470
1.448
1.426
1.404
1.382
1.361
1.340
1.319
1.298
1.278
1.257
1.237
1.217
1.198
1.179
1.160
1.141
1.122
1.104
1.086
1.068
1.051
1.033
1.016
0.999
0.983
0.966
0.950
0.934
0.918
0.903
0.888
0.873
0.858
0.843
0.829
0.815
0.801
0.787
0.774
0.761
0.748
0.735
0.723
0.710
0.698
0.686
0.674
0.663
0.651
0.640
0.629
0.618
0.608
0.597
0.587
0.577
0.567
0.557
0.548
0.538
0.529
0.520
61
RESISTANCE
(Ohms)
TEMP
(F)
7,686
7,665
7,468
7,277
7,091
6,911
6,735
6,564
6,399
6,238
6,081
5,929
5,781
5,637
5,497
5,361
5,229
5,101
4,976
4,855
4,737
4,622
4,511
4,403
4,298
4,196
4,096
4,000
3,906
3,814
3,726
3,640
3,556
3,474
3,395
3,318
3,243
3,170
3,099
3,031
2,964
2,898
2,835
2,773
2,713
2,655
2,597
2,542
2,488
2,436
2,385
2,335
2,286
2,239
2,192
2,147
2,103
2,060
2,018
1,977
1,937
1,898
1,860
1,822
1,786
1,750
1,715
1,680
1,647
1,614
1,582
1,550
1,519
1,489
1,459
1,430
1,401
1,373
1,345
1,318
1,291
1,265
1,240
1,214
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
VOLTAGE
DROP
(V)
0.511
0.502
0.494
0.485
0.477
0.469
0.461
0.453
0.445
0.438
0.430
0.423
0.416
0.408
0.402
0.395
0.388
0.381
0.375
0.369
0.362
0.356
0.350
0.344
0.339
0.333
0.327
0.322
0.317
0.311
0.306
0.301
0.296
0.291
0.286
0.282
0.277
0.272
0.268
0.264
0.259
0.255
0.251
0.247
0.243
0.239
0.235
0.231
0.228
0.224
0.220
0.217
0.213
0.210
0.206
0.203
0.200
0.197
0.194
0.191
0.188
0.185
0.182
0.179
0.176
0.173
0.171
0.168
0.165
0.163
0.160
0.158
0.155
0.153
0.151
0.148
0.146
0.144
0.142
0.140
0.138
0.135
0.133
RESISTANCE
(Ohms)
1,190
1,165
1,141
1,118
1,095
1,072
1,050
1,029
1,007
986
965
945
925
906
887
868
850
832
815
798
782
765
750
734
719
705
690
677
663
650
638
626
614
602
591
581
570
561
551
542
533
524
516
508
501
494
487
480
473
467
461
456
450
445
439
434
429
424
419
415
410
405
401
396
391
386
382
377
372
367
361
356
350
344
338
332
325
318
311
304
297
289
282
Table 38B — 5K Thermistor Temperature (°C) vs Resistance/Voltage
TEMP
(C)
–32
–31
–30
–29
–28
–27
–26
–25
–24
–23
–22
–21
–20
–19
–18
–17
–16
–15
–14
–13
–12
–11
–10
–9
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
VOLTAGE
DROP
(V)
3.705
3.687
3.668
3.649
3.629
3.608
3.586
3.563
3.539
3.514
3.489
3.462
3.434
3.406
3.376
3.345
3.313
3.281
3.247
3.212
3.177
3.140
3.103
3.065
3.025
2.985
2.945
2.903
2.860
2.817
2.774
2.730
2.685
2.639
2.593
2.547
2.500
2.454
2.407
2.360
2.312
2.265
2.217
2.170
2.123
2.076
2.029
RESISTANCE
(Ohms)
TEMP
(C)
100,260
94,165
88,480
83,170
78,125
73,580
69,250
65,205
61,420
57,875
54,555
51,450
48,536
45,807
43,247
40,845
38,592
38,476
34,489
32,621
30,866
29,216
27,633
26,202
24,827
23,532
22,313
21,163
20,079
19,058
18,094
17,184
16,325
15,515
14,749
14,026
13,342
12,696
12,085
11,506
10,959
10,441
9,949
9,485
9,044
8,627
8,231
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
VOLTAGE
DROP
(V)
1.982
1.935
1.889
1.844
1.799
1.754
1.710
1.666
1.623
1.580
1.538
1.497
1.457
1.417
1.378
1.340
1.302
1.265
1.229
1.194
1.160
1.126
1.093
1.061
1.030
0.999
0.969
0.940
0.912
0.885
0.858
0.832
0.807
0.782
0.758
0.735
0.713
0.691
0.669
0.649
0.629
0.610
0.591
0.573
0.555
0.538
0.522
62
RESISTANCE
(Ohms)
TEMP
(C)
7,855
7,499
7,161
6,840
6,536
6,246
5,971
5,710
5,461
5,225
5,000
4,786
4,583
4,389
4,204
4,028
3,861
3,701
3,549
3,404
3,266
3,134
3,008
2,888
2,773
2,663
2,559
2,459
2,363
2,272
2,184
2,101
2,021
1,944
1,871
1,801
1,734
1,670
1,609
1,550
1,493
1,439
1,387
1,337
1,290
1,244
1,200
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
VOLTAGE
DROP
(V)
0.506
0.490
0.475
0.461
0.447
0.433
0.420
0.407
0.395
0.383
0.371
0.360
0.349
0.339
0.329
0.319
0.309
0.300
0.291
0.283
0.274
0.266
0.258
0.251
0.244
0.237
0.230
0.223
0.217
0.211
0.204
0.199
0.193
0.188
0.182
0.177
0.172
0.168
0.163
0.158
0.154
0.150
0.146
0.142
0.138
0.134
RESISTANCE
(Ohms)
1,158
1,118
1,079
1,041
1,006
971
938
906
876
836
805
775
747
719
693
669
645
623
602
583
564
547
531
516
502
489
477
466
456
446
436
427
419
410
402
393
385
376
367
357
346
335
324
312
299
285
Table 39A — 10K Thermistor Temperatures (°F) vs Resistance/Voltage Drop
(For Thermistor T10)
TEMP
(F)
–25
–24
–23
–22
–21
–20
–19
–18
–17
–16
–15
–14
–13
–12
–11
–10
–9
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
VOLTAGE
DROP (V)
4.758
4.750
4.741
4.733
4.724
4.715
4.705
4.696
4.686
4.676
4.665
4.655
4.644
4.633
4.621
4.609
4.597
4.585
4.572
4.560
4.546
4.533
4.519
4.505
4.490
4.476
4.461
4.445
4.429
4.413
4.397
4.380
4.363
4.346
4.328
4.310
4.292
4.273
4.254
4.235
4.215
4.195
4.174
4.153
4.132
4.111
4.089
4.067
4.044
4.021
3.998
3.975
3.951
3.927
3.903
3.878
3.853
3.828
3.802
3.776
3.750
3.723
3.697
3.670
3.654
3.615
3.587
3.559
3.531
3.503
3.474
3.445
3.416
3.387
3.357
3.328
3.298
3.268
3.238
3.208
3.178
3.147
3.117
3.086
3.056
3.025
RESISTANCE
(Ohms)
196,453
189,692
183,300
177,000
171,079
165,238
159,717
154,344
149,194
144,250
139,443
134,891
130,402
126,183
122,018
118,076
114,236
110,549
107,006
103,558
100,287
97,060
94,020
91,019
88,171
85,396
82,729
80,162
77,662
75,286
72,940
70,727
68,542
66,465
64,439
62,491
60,612
58,781
57,039
55,319
53,693
52,086
50,557
49,065
47,627
46,240
44,888
43,598
42,324
41,118
39,926
38,790
37,681
36,610
35,577
34,569
33,606
32,654
31,752
30,860
30,009
29,177
28,373
27,597
26,838
26,113
25,396
24,715
24,042
23,399
22,770
22,161
21,573
20,998
20,447
19,903
19,386
18,874
18,384
17,904
17,441
16,991
16,552
16,131
15,714
15,317
TEMP
(F)
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
VOLTAGE
DROP (V)
2.994
2.963
2.932
2.901
2.870
2.839
2.808
2.777
2.746
2.715
2.684
2.653
2.622
2.592
2.561
2.530
2.500
2.470
2.439
2.409
2.379
2.349
2.319
2.290
2.260
2.231
2.202
2.173
2.144
2.115
2.087
2.059
2.030
2.003
1.975
1.948
1.921
1.894
1.867
1.841
1.815
1.789
1.763
1.738
1.713
1.688
1.663
1.639
1.615
1.591
1.567
1.544
1.521
1.498
1.475
1.453
1.431
1.409
1.387
1.366
1.345
1.324
1.304
1.284
1.264
1.244
1.225
1.206
1.187
1.168
1.150
1.132
1.114
1.096
1.079
1.062
1.045
1.028
1.012
0.996
0.980
0.965
0.949
0.934
0.919
0.905
63
RESISTANCE
(Ohms)
14,925
14,549
14,180
13,824
13,478
13,139
12,814
12,493
12,187
11,884
11,593
11,308
11,031
10,764
10,501
10,249
10,000
9,762
9,526
9,300
9,078
8,862
8,653
8,448
8,251
8,056
7,869
7,685
7,507
7,333
7,165
6,999
6,838
6,683
6,530
6,383
6,238
6,098
5,961
5,827
5,698
5,571
5,449
5,327
5,210
5,095
4,984
4,876
4,769
4,666
4,564
4,467
4,370
4,277
4.185
4,096
4,008
3,923
3,840
3,759
3,681
3,603
3,529
3,455
3,383
3,313
3,244
3,178
3,112
3,049
2,986
2,926
2,866
2,809
2,752
2,697
2,643
2,590
2,539
2,488
2,439
2,391
2,343
2,297
2,253
2,209
TEMP
(F)
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
VOLTAGE
DROP (V)
0.890
0.876
0.862
0.848
0.835
0.821
0.808
0.795
0.782
0.770
0.758
0.745
0.733
0.722
0.710
0.699
0.687
0.676
0.666
0.655
0.645
0.634
0.624
0.614
0.604
0.595
0.585
0.576
0.567
0.558
0.549
0.540
0.532
0.523
0.515
0.507
0.499
0.491
0.483
0.476
0.468
0.461
0.454
0.447
0.440
0.433
0.426
0.419
0.413
0.407
0.400
0.394
0.388
0.382
0.376
0.370
0.365
0.359
0.354
0.349
0.343
0.338
0.333
0.328
0.323
0.318
0.314
0.309
0.305
0.300
0.296
0.292
0.288
0.284
0.279
0.275
0.272
0.268
0.264
RESISTANCE
(Ohms)
2,166
2,124
2,083
2,043
2,003
1,966
1,928
1,891
1,855
1,820
1,786
1,752
1,719
1,687
1,656
1,625
1,594
1,565
1,536
1,508
1,480
1,453
1,426
1,400
1,375
1,350
1,326
1,302
1,278
1,255
1,233
1,211
1,190
1,169
1,148
1,128
1,108
1,089
1,070
1,052
1,033
1,016
998
981
964
947
931
915
900
885
870
855
841
827
814
800
787
774
762
749
737
725
714
702
691
680
670
659
649
639
629
620
610
601
592
583
574
566
557
Table 39B — 10K Thermistor Temperatures (°C) vs Resistance/Voltage Drop
(For Thermistor T10)
TEMP
(C)
–32
–31
–30
–29
–28
–27
–26
–25
–24
–23
–22
–21
–20
–19
–18
–17
–16
–15
–14
–13
–12
–11
–10
–9
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
VOLTAGE
DROP (V)
4.762
4.748
4.733
4.716
4.700
4.682
4.663
4.644
4.624
4.602
4.580
4.557
4.533
4.508
4.482
4.455
4.426
4.397
4.367
4.335
4.303
4.269
4.235
4.199
4.162
4.124
4.085
4.044
4.003
3.961
3.917
3.873
3.828
3.781
3.734
3.686
3.637
3.587
3,537
3.485
3.433
3.381
3.328
3.274
3.220
3.165
3.111
RESISTANCE
(Ohms)
200,510
188,340
177,000
166,342
156,404
147,134
138,482
130,402
122,807
115,710
109,075
102,868
97,060
91,588
86,463
81,662
77,162
72,940
68,957
65,219
61,711
58,415
55,319
52,392
49,640
47,052
44,617
42,324
40,153
38,109
36,182
34,367
32,654
31,030
29,498
28,052
26,686
25,396
24,171
23,013
21,918
20,883
19,903
18,972
18,090
17,255
16,474
TEMP
(C)
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
VOLTAGE
DROP (V)
3.056
3.000
2.944
2.889
2.833
2.777
2.721
2.666
2.610
2.555
2.500
2.445
2.391
2.337
2.284
2.231
2.178
2.127
2.075
2.025
1.975
1.926
1.878
1.830
1.784
1.738
1.692
1.648
1.605
1.562
1.521
1.480
1.439
1.400
1.362
1.324
1.288
1.252
1.217
1.183
1.150
1.117
1.086
1.055
1.025
0.996
0.968
Table 40 — Thermistor Temperature vs
Resistance, Motor Temperature Thermistors
TEMP
(F)
–22
–13
–4
5
14
23
32
41
50
59
68
77
86
95
104
113
122
131
140
149
158
167
176
185
194
203
212
221
230
239
248
TEMP
(C)
–30
–25
–20
–15
–10
–5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
RESISTANCE
(Ohms)
88,480.0
65,205.0
48,536.0
36,476.0
27,663.0
21,163.0
16,325.0
12,696.0
9,949.5
7,855.5
6,246.0
5,000.0
4,028.4
3,265.7
2,663.2
2,184.2
1,801.2
1,493.1
1,243.9
1,041.4
875.8
739.7
627.6
534.9
457.7
393.3
339.3
293.8
255.3
222.6
194.8
NOTE: Motor temperature thermistor values must be verified using resistance.
Voltage drop cannot be used.
64
RESISTANCE
(Ohms)
15,714
15,000
14,323
13,681
13,071
12,493
11,942
11,418
10,921
10,449
10,000
9,571
9,164
8,776
8,407
8,056
7,720
7,401
7,096
6,806
6,530
6,266
6,014
5,774
5,546
5,327
5,117
4,918
4,727
4,544
4,370
4,203
4,042
3,889
3,743
3,603
3,469
3,340
3,217
3,099
2,986
2,878
2,774
2,675
2,579
2,488
2,400
TEMP
(C)
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
VOLTAGE
DROP (V)
0.940
0.913
0.887
0.862
0.837
0.813
0.790
0.767
0.745
0.724
0.703
0.683
0.663
0.645
0.626
0.608
0.591
0.574
0.558
0.542
0.527
0.512
0.497
0.483
0.470
0.457
0.444
0.431
0.419
0.408
0.396
0.386
0.375
0.365
0.355
0.345
0.336
0.327
0.318
0.310
0.302
0.294
0.287
0.279
0.272
0.265
RESISTANCE
(Ohms)
2,315
2,235
2,157
2,083
2,011
1,943
1,876
1,813
1,752
1,693
1,637
1,582
1,530
1,480
1,431
1,385
1,340
1,297
1,255
1,215
1,177
1,140
1,104
1,070
1,037
1,005
974
944
915
889
861
836
811
787
764
742
721
700
680
661
643
626
609
592
576
561
to 30 seconds. When some flow is detected but not enough for
machine operation, a red LED at the far left will be illuminated.
With increasing flow, successive red LEDs illuminate. When
the switch determines flow is present, the amber LED illuminates indicating the output has closed. This is not an indication of minimum flow. Increasing flow above the amber LED
output indication illuminates the first green LED. Each successive green LED indicates greater flow. The switch closure does
not indicate minimum flow for the machine. With one green
LED lit, minor fluctuations in water flow may cause nuisance
alarms. Additional green LEDs indicate higher flow rates, and
can avoid the nuisance alarms. Refer to Fig. 37.
1. Check to confirm that all strainers are clean, valves are
open and pumps are running. For the case of VFD
controlled pumps, ensure that the minimum speed setting
has not been changed.
2. Measure the pressure drop across the cooler and using
Appendix E on pages 95-100, calculate the cooler flow
and compare this to the system requirements.
3. If the measured flow rate through the cooler agrees with
the system requirements. At least 2 green LEDs should be
lit.
4. If the contacts do not close while two green LEDs are lit,
verify operation of the flow switch relay. Without changing fluid flow through the cooler, check for power at the
flow switch relay (FSR) coil. If power is not present,
check continuity of flow sensor cable. If the sensor cable
is not shorted or open when correct flow has been
confirmed and the green sensor LEDs are lit, the sensor
has failed and must be replaced.
Pressure Transducers — Discrete high and low pres-
sure transducers are used for pressure sensing on all
30GXN,GXR,HX chillers. The discharge and oil pressure
transducers are high pressure transducers, and the suction and
economizer pressure transducers are low pressure transducers
(white dot). No pressure transducer calibration is required. The
transducers operate on a 5 vdc supply, which is generated by
the Main Base Board (MBB) for suction and discharge
pressure transducers and by the Screw Compressor Board
(SCB) for the oil and economizer pressure transducers. See
unit wiring labels for specific MBB and SCB pressure
transducer power and signal connections. Refer to Fig. 35A35C for pressure transducer locations.
TROUBLESHOOTING — If transducer is suspected of being
faulty, first check supply voltage to transducer. Supply voltage
should be 5 vdc  .2 v. If supply voltage is correct, compare
pressure reading displayed on keypad and display module
against pressure shown on a calibrated pressure gage. If the
2 pressure readings are not reasonably close, replace pressure
transducer. Low pressure transducers suction and economizer
pressures should be within ± 2 psig. Discharge and oil
pressures should be within ± 5 psig.
FLOW SENSOR — Figure 36 shows a typical view of the
flow sensor as attached to a victaulic nozzle. It also shows the
connector pin orientation of the sensor. If nuisance trips of the
sensor are occurring, follow the steps below to correct the
situation:
When power is supplied to the device, a warm-up period is
initiated. During this period, the right-most green LED is lit
and turned off as each LED to the left is successively lit until
the left-most red LED is lit. The warm-up period may take up
EPT-A
OPT-B1
OPT-A1
EPT-B
SPT-A
SPT-B
DPT-A
DPT-B
Fig. 35A — 30HX Pressure Transducer Locations (2-Compressor Unit)
LEGEND FOR FIG. 35A-35C
DPT
EPT
EXV
OPT
SPT
—
—
—
—
—
Discharge Pressure Transducer
Economizer Pressure Transducer
Electronic Expansion Valve
Oil Pressure Transducer
Suction Pressure Transducer
65
OPT-A2
OPT-A1
OPT-B1
EPT-B
SPT-A
EPT-A
SPT-B
DPT-B
DPT-A
Fig. 35B — 30HX Pressure Transducer Locations (3-Compressor Unit)
OPT-A
OPT-B
SPT-B
SPT-A
EPT-A
EPT-B
DPT-A
DPT-B
Fig. 35C — 30GXN,R Pressure Transducer Locations (Top View)
66
FLOW SWITCH
LOCATION STANDARD 3-PASS
(UNIT SIZES 080-119, 125, 135)*
FLOW SWITCH
LOCATION STANDARD 2-PASS
(UNIT SIZES 118, 128, 138-178, 204-350)*
1.61
[41]
2.83
[72]
2.36
[60]
M12 x 4 PIN MALE
1
1.38
[35]
4
2
3
3.25
[82.6]
L1
24VAC
N
BRN
BLK
2/4
1/4 NPT
BLU
EXTERNAL RELAY COIL
o.305
[7.75]
WIRING DIAGRAM
*And associated modular units.
Fig. 36 — 30GXN,R Flow Sensor
RED
FLOW BELOW
SET POINT
GREEN
AMBER
OUTPUT
ENERGIZED
FLOW ABOVE
SET POINT
Fig. 37 — Chilled Water Flow Switch LED Display
67
.47
[12]
not replaced, it may relieve at a lower pressure, or leak due to
trapped dirt from the system which may prevent resealing.
Pressure relief valves located on cooler and condenser shells
and 30HXA oil separator shells have 3/4-in. NPT connections
for relief. The 30GXN,R oil separators have 1/2-in. male flare
connections. Some local building codes require that relieved
gases be removed. This connection allows conformance to this
requirement.
Safety Devices — The 30GX,HX chillers contain many
safety devices and protection logic built into the electronic
control. Following is a description of the major safeties.
COMPRESSOR PROTECTION
Motor Overload — The compressor protection modules
(CCP) protect each compressor against overcurrent. Do not
bypass the current transducers or make any changes to the
factory-installed and configured 8-pin headers. The configuration of these headers defines the Must Trip Amps (MTA) at
which the CCP will turn the compressors off. Determine the
cause for trouble and correct the problem before resetting the
CCP. See Appendix A for setting of MTAs and configuration
headers.
Each CCP board also reads the status of each compressor’s
high-pressure switch. All compressors have factory-installed
high-pressure switches. See Table 41.
Control Modules
Turn controller power off before servicing controls. This
ensures safety and prevents damage to controller.
MAIN BASE BOARD (MBB), SCREW COMPRESSOR
BOARD (SCB), EXPANSION VALVE BOARD
(EXV), ENERGY MANAGEMENT MODULE (EMM),
COMFORTLINK™
COMPRESSOR
PROTECTION
BOARDS (CCP) AND THE NAVIGATOR — All of the
ComfortLink modules perform continuous diagnostic evaluations of the condition of the hardware. Proper operation and
communication of these modules is indicated by LEDs on the
surface of each module (all except the Navigator that displays
‘Communication Failure’ when it occurs).
RED LED — All module red LEDs will blink in unison at a
1 to 2 second rate when communicating and functioning
properly. Lighted continuously indicates a problem requiring
replacement of module. Off continuously indicates power
should be checked. If there is no input power, check fuses. If
fuse is bad, check for shorted secondary of transformer, tripped
circuit breaker or bad module. An LED blinking at a rate of
twice per second indicates potential loss of program. The
suspect board(s) should be downloaded using the SmartLoader
program. If this is not successful, the module should be
replaced.
GREEN LED — Each module has a green LED that should
always be blinking when power is on. Each module's green
LED will be blinking at different rates. This is a normal condition. If the green LED is not blinking, check the red LED. If the
red LED is normal, verify that all communication connections
(J3 for MBB, J3/J4 for SCB, EXV, EMM and J10/J11 for
CCP1 and CCP2) are correct. If wiring is correct, check the
Main Base Board instance jumper (should be set to ‘1’). The
EXV, EMM and SCB module address switches should all be
set to ON. For CCP1, switch 1 should be On and switches 2, 3
and 4 should be Off. For CCP2, switches 1,3 and 4 should be
On and switch 2 should be Off. Remote terminal strip (TB3)
connections are made to the Main Base Board at plug MBB-J5.
YELLOW LED — The Main Base Board (MBB) has a yellow LED. This light will blink whenever CCN (Carrier
Comfort Network) communications are in progress. Only the
MBB is designed to communication on the CCN bus. All
other modules (including the Navigator) are designed to
communicate only on the LEN bus.
The majority of the system operating intelligence resides in
the MBB, however each individual module does have its own
operating software. The machine operator communicates with
the MBB through the Navigator. Communications between all
modules is accomplished by a 3-wire sensor bus called
the Local Equipment Network (LEN). These 3 wires run in
parallel from module to module.
For all models, control modules are powered by 24 vac
power sources protected by circuit breakers. Separate power
sources are used for the CCP modules. Refer to the 24-v wiring
schematic located on the chiller for detailed information. Refer
to Table 42 for control troubleshooting information.
Table 41 — High-pressure Switch Settings
UNIT
30GX
30HXA
30HXC
SWITCH SETTING
psig
kPa
303 ±7
2089 ±48
275 ±7
1896 ±48
191 ±7
1317 ±48
If the switch opens during operation, the compressor will be
shut down. The CCP will reset automatically when the switch
closes, however, a manual reset is required to restart the
compressor.
OIL SEPARATOR HEATERS (30GX) — Each oil separator
circuit has a heater mounted on the underside of the vessel.
The heater is energized with control circuit power. Oil heaters
are energized when the discharge gas temperature falls below
105 F (40.6 C). The heaters are deenergized when the
discharge gas temperature rises above 110 F (43.3 C). The control will allow the chiller to attempt to start with the heaters
energized and will keep the heaters on, even when running,
until the discharge gas temperature reaches 110 F (43.3 C).
Note that the oil heaters are deenergized if the oil level switch
is open.
COOLER PROTECTION
Low Water Temperature — Microprocessor is programmed
to shut the chiller down if the leaving fluid temperature drops
below 34 F (1.1 C) for water or more than 8 F (4.4 C) below
set point for brine units. When the fluid temperature rises 6 F
(3.3 C) above the leaving fluid set point, the safety resets and
the chiller restarts. Reset is automatic as long as this is the first
occurrence of the day.
IMPORTANT: If the unit is installed in an area where
ambient temperatures fall below 32 F (0 C), cooler
heaters and inhibited ethylene glycol or other suitable
solution must be used in the chilled fluid circuit.
Relief Devices — Fusible plugs are located in each circuit (30GXN,R only) between the condenser and the liquid
line shutoff valve.
PRESSURE RELIEF VALVES — Valves are installed in each
circuit and are located on all coolers. One relief valve is also
installed on each 30HXC condenser. Both circuits’ oil separators on 30GXN,R and 30HXA units have factory-installed
relief valves as well. These valves are designed to relieve if an
abnormal pressure condition arises. Relief valves on all coolers
and 30HXC condensers relieve at 220 psi (1517 kPa). Relief
valves on 30GXN,R and 30HXA oil separators relieve at
320 psi (2206 kPa). All 30HXA, HXC units with factoryinstalled suction service valves also have a relief valve in each
compressor discharge line. These valves are designed to
relieve at 350 psig (2413 kPa). These valves should not be
capped. If a valve relieves, it should be replaced. If the valve is
68
Table 42 — Compressor Control Troubleshooting
SYMPTOMS
COMPRESSOR DOES NOT
RUN
CAUSE
Power line open
Control fuse open
High-Pressure Switch (HPS) tripped
Loose terminal connection
Improperly wired controls
Low line voltage
Compressor motor defective
Seized compressor
Pre-lubrication not successful
COMPRESSOR CYCLES
Loss of charge
OFF ON LOW SATURATED SUCTION Bad transducer
TEMPERATURE
Low refrigerant charge
Failed expansion device
Partially plugged or plugged strainer
COMPRESSOR SHUTS
High-pressure switch erratic in action
DOWN ON HIGH PRESSURE
Compressor discharge valve partially closed
CONTROL
Condenser fan(s) not operating (air cooled units)
Condenser coil plugged or dirty (air cooled units)
Condenser water valve not operating (water
cooled units)
Circuit overcharged
UNIT OPERATES LONG OR
Low refrigerant charge
CONTINUOUSLY
Control contacts fused
Partially plugged or plugged strainer
Defective insulation
Service load exceeding design capacity
Inefficient compressor
SYSTEM NOISES
Piping vibration
Expansion valve hissing
Compressor noisy
COMPRESSOR LOSES OIL
HOT LIQUID LINE
FROSTED LIQUID LINE
COMPRESSOR LOADERS
NOT WORKING PROPERLY
Leak in system
Mechanical damage to rotors
Shortage of refrigerant due to leak
Shutoff valve partially closed or restricted
Burned out coil
Defective loader solenoid valve
Miswired solenoid
REMEDY
Check main disconnect.
Check control circuit for ground or short. Replace fuse.
Use Navigator to reset current alarms.
Check connections from CCP to contactor
Check wiring and rewire.
Check line voltage. Determine location of voltage drop
and remedy deficiency.
Check motor winding for open or short. Replace
compressor if necessary.
Replace compressor.
Check oil pump operation, oil pressure transducer, verify oil solenoid valve operation.
Repair leak and recharge.
Replace transducer.
Add refrigerant.
Repair/replace as needed.
Remove and clean strainer.
Replace switch.
Open valve or replace if defective.
Check wiring. Repair or replace motor(s) if defective.
Clean coil.
Check wiring. Repair or replace valve if defective.
Clean condenser.
Add refrigerant.
Replace control.
Clean or replace.
Replace or repair.
Evaluate load requirements.
Check loader solenoid valves. Replace if necessary.
Support piping as required.
Add refrigerant.
Check for plugged liquid line strainer.
Replace compressor (worn bearings).
Check for loose compressor bolts securing compressor to cooler.
Find and repair leak.
Replace compressor.
Repair leak and recharge.
Open valve or remove restriction.
Replace coil.
Replace valve.
Rewire correctly.
At each system element, the shields of its communication
bus cables must be tied together. If the communication bus is
entirely within one building, the resulting continuous shield
must be connected to a ground at one point only. If the communication bus cable exits from one building and enters another,
the shields must be connected to grounds at the lightning
suppressor in each building where the cable enters or exits the
building (one point per building only).
Carrier Comfort Network (CCN) Interface —
The 30GX,HX chiller units can be connected to the CCN
if desired. The communication bus wiring is a shielded,
3-conductor cable with drain wire and is supplied and installed
in the field. The system elements are connected to the communication bus in a daisy chain arrangement. The positive pin of
each system element communication connector must be wired
to the positive pins of each system element. Wiring connections for CCN can be made at terminal block TB3. There are
four terminals (including shield) located at TB3 for permanent
CCN connection. For temporary CCN connection to the
chiller, there is also an RJ-11 (6 position, 6 conductor) connector. The connector is for field connection of a laptop computer
running Service Tool or ComfortVIEW™ software programs.
Consult CCN Contractor's Manual for further information.
NOTE: Conductors and drain wire must be 20 AWG (American Wire Gage) minimum stranded, tinned copper. Individual
conductors must be insulated with PVC, PVC/nylon, vinyl,
Teflon, or polyethylene. An aluminum/polyester 100% foil
shield and an outer jacket of PVC, PVC/nylon, chrome vinyl,
or Teflon with a minimum operating temperature range of
–20 C to 60 C is required. Wire manufactured by Alpha (2413
or 5463), American (A22503), Belden (8772), or Columbia
(02525) meets the above mentioned requirements.
It is important when connecting to a CCN communication
bus that a color coding scheme be used for the entire network
to simplify the installation. It is recommended that red be used
for the signal positive, black for the signal negative, and white
for the signal ground. Use a similar scheme for cables containing different colored wires.
IMPORTANT: A shorted CCN bus cable will prevent
some routines from running and may prevent the unit
from starting. If abnormal conditions occur, disconnect
the CCN bus. If conditions return to normal, check the
CCN connections and cable. Run new cable if necessary.
A short in one section of the bus can cause problems
with all system elements on the bus.
Replacing Defective Modules — The ComfortLink™
replacement modules are shown in Table 43. The unit model
and serial numbers are printed on the unit nameplate located on
an exterior corner post (30GX) or the corner of the control box
(30HX). The basic software and unit configuration data is factory installed by Carrier in the replacement module. Therefore,
when ordering any replacement module, specify the replacement part number (located on each module front or back), full
unit model number and serial number. The replacement
modules will be downloaded with the basic software. If the
Main Base Board (MBB) has been replaced, verify that all
configuration data is correct. Follow the Configuration mode
table and verify that all items under sub-modes UNIT, OPT1
and OPT2 are correct. Any additional field installed accessories or options (sub-mode RSET,SLCT) should also be verified.
69
Table 43 — Replacement Module Part Number
MODULE
Main Base Board (MBB)
Expansion Valve Board
(EXV)
Screw Compressor
Board (SCB)
Navigator Display
Energy Management
Module (EMM)
ComfortLink™ Compressor
Protection Boards
(CCP1, CCP2)
REPLACEMENT
REPLACEMENT
PART NUMBER PART NUMBER
(Without
(With Software)
Software)
30GX506748
HK50AA029
30HX515217
HK50AA026
30HX501316
HK50AA032
HK50AA033
N/A
30HX515218
HK50AA028
HN67LM103
N/A
2.
3.
4.
5.
Refer to the Start-Up Checklist for 30GXN,GXR,HX
Liquid Chillers (completed at time of original start-up) found
in the job folder. This information is needed later in this
procedure. If the checklist does not exist, fill out the current
information in the Configuration mode on a new checklist.
Tailor the various options and configurations as needed for this
particular installation.
when draining, or when there is no liquid in the system.
Remove Fuse 1 to deenergize the heaters. Drain the fluid
from the system.
Isolate the cooler from the rest of the system with water
shut off valves.
Completely fill the cooler with an appropriate amount of
inhibited ethylene glycol solution (or other suitable
corrosion-inhibitive antifreeze) for 15 F (8.3 C) below
the expected low ambient conditions (5 gallon [19 L]
minimum).
Leave the cooler filled with the antifreeze solution for the
winter, or drain if desired. Be sure to deenergize heaters
(if installed) as explained in Step 1 to prevent damage.
Use an approved method of disposal when removing the
antifreeze solution.
Update item W.DNE Winterization Performed (Configuration Mode, Sub-mode SERV) to YES. Winterization is
complete.
Maintenance
RECOMMENDED MAINTENANCE SCHEDULE — The
following are only recommended guidelines. Job site conditions may dictate that maintenance schedules be performed
more frequently than listed here.
ROUTINE (as conditions dictate)
30GX machines with E-coat condenser coils:
• Check condenser coils for debris, clean as necessary
• Periodic clean water rinse, especially in coastal and
industrial applications.
MONTHLY
30GX machines with E-coat Condenser Coils:
• Check condenser coils for debris, clean as necessary
• Coil cleaning with Carrier approved coil cleaner.
EVERY 3 MONTHS
All machines:
• Check all refrigerant joints and valves for refrigerant
leaks, repair as necessary.
• Check moisture indicating sight glass for possible refrigerant loss and presence of moisture.
• Check oil filter pressure drops, replace as necessary.
• Check chilled water flow switch operation.
30GX machines:
• Check condenser coils for debris, clean as necessary.
• Check condenser fan operation.
YEARLY:
All machines:
• Check all electrical connections. Tighten as necessary.
• Check accuracy of all transducers for each circuit,
replace as necessary.
• Check accuracy of thermistors, replace if greater than
± 2° F (1.2° C) variance from calibrated thermometer.
• Obtain and test an oil sample, change as necessary.
• Clean cooler tubes if appropriate.
• Check to be sure that the proper concentration of
antifreeze is present in the chilled water loop.
• Check to be sure that the proper amount of inhibitor is
present in the chilled water loop.
• Check all refrigerant strainers and filter driers for
pressure drops, replace/clean as necessary
• Check chilled water strainers, clean as necessary
30GX machines:
• Check cooler heater operation
• Check condenser fan blades to insure they are securely
fastened to the motor shaft and their condition.
Electrical shock can cause personal injury. Disconnect all
electrical power before servicing.
1. Check that all power to unit is off. Carefully disconnect
all wires from the defective module by unplugging its
connectors. Remove the screw securing the communication drain wire (CCP modules only). Save the screws.
2. Remove the defective module by removing its mounting
screws with a Phillips screwdriver, and removing the
module from the control box. Save the screws later use.
For Navigator replacement, remove the screw securing
the cable clamp near TB3.
3. Verify that the instance jumper (MBB) or address
switches (all other modules) exactly match the settings of
the defective module.
4. Package the defective module in the carton of the new
module for return to Carrier.
5. Mount the new module in the unit’s control box using a
Phillips screwdriver and the screws saved in Step 2.
6. Reinstall all module connectors and communication
drain wire (CCP modules only). For Navigator replacement, make sure the plug is installed at TB3 in the LEN
connector.
7. Carefully check all wiring connections before restoring
power.
8. Verify the Enable/Off/Remote Contact switch is in the
OFF position.
9. Restore control power. Verify that all module red LEDs
blink in unison. Verify that all green LEDs are blinking
and that the Navigator is communicating correctly.
10. Verify all configuration information, settings, setpoints
and schedules. Return the Enable/Off/Remote Contact
switch to normal operation position.
Winter Shutdown Preparation — At the end of
each cooling season the fluid should be drained from the
system. However, due to the cooler circuiting, some fluid will
remain in the cooler after draining. To prevent freeze-up
damage to the cooler tubes perform the following procedure.
1. If cooler heaters have been installed, deenergize the
heaters to prevent damage and possible safety hazards
70
30HXC machines:
• Check Condenser Water Regulating Valve operation, if
equipped.
• Clean condenser tubes if appropriate.
• Check condenser water strainers, clean as necessary
PRE-START-UP PROCEDURE
IMPORTANT: Before beginning Pre-Start-Up or StartUp, complete the Start-Up Checklist for the 30GX,HX
Liquid Chillers on pages CL-1 to CL-10. This Checklist
assures proper start-up of the chiller, and provides a
record of unit condition, application requirements, system information and operation at initial start-up. The
checklist should be removed from the manual and kept
with the job file for future reference.
SIDE VIEW
FRONT VIEW
Fig. 38 — Suction Valve Detail
JAM NUT
IMPORTANT: DO NOT ATTEMPT TO START THE
CHILLER UNTIL THE FOLLOWING CHECKS
HAVE BEEN COMPLETED.
BRASS CAP
VALVE HANDLE
C
C
DO NOT make any changes to the factory-installed compressor power wiring in the control box or at the compressor junction box. Doing so will cause permanent damage to
the compressor and will require compressor replacement.
Proper phasing has already been checked at the factory.
O
open
O
close
Caution: loosen stem locknut
(L.H. thread) before opening
Fig. 39 — Suction Valve Handle Details
System Check
8. Check to ensure the unit is level per the installation
instructions.
9. Check all field configuration data and set points.
10. Enter correct date, time, and operating schedule(s).
11. Verify operation of solenoids, pumps, valves, compressors, fans, etc. as listed in the Start-Up Checklist.
12. Open condenser water valves. Check condenser water
pump for proper operation (30HXC).
1. Check all auxiliary components such as the chilled fluid
circulating pump, air-handling equipment, or other equipment to which the chiller supplies liquid. Consult the
manufacturer’s instructions. If the unit has field-installed
accessories, be sure all are properly installed and wired
correctly. Refer to the unit wiring diagrams.
2. Check the cooler flow switch for proper operation (item
‘FLOW’, Inputs mode under sub-mode GEN.I). Ensure
sensor contacts close when the pump is on and open
when the pump is turned off. A flow switch is factory
installed on all models with two or more pass coolers. For
single pass cooler models, the flow switch is factory
supplied for field installation with factory-supplied
victaulic nozzles.
3. Open the discharge and liquid valves in each circuit. Both
shutoff valves are in-line ball type and are open when
stem is parallel with the refrigerant flow.
4. If factory-installed suction service valves are installed,
open the suction service valves in each circuit. Service
valve is located below the compressor in the cooler
suction connection flange. To operate the valve, first
remove the cap. Use a back-up wrench on the packing
gland to prevent loosening while removing cap. Loosen
the jam nut. Rotating the valve handle clockwise will
close valve and counterclockwise will open valve. When
closing the valve, the linkage arm must swing past center
of the actuator shaft cam to seat and prevent accidental
opening of the valve. Tighten the jam nut. See Fig. 38
and 39.
5. Before filling the system with fluid following a winter
shutdown, check the chilled water loop for pressure.
Higher than atmospheric pressure could be the result of a
refrigerant leak in the cooler.
6. Open the oil shutoff valves located by the oil pre-filter,
and the ball valve to each compressor.
7. Check the tightness of all electrical connections. Check
incoming power supply for proper nameplate voltage.
START-UP AND OPERATION
Actual Start-Up — Actual start-up should be done only
under supervision of a qualified refrigeration mechanic and
qualified Carrier Comfort Network personnel.
1. Set leaving fluid temperature. No cooling range adjustment is necessary.
2. Start chilled fluid pump and condenser pump (30HXC) if
not controlled by unit.
3. Switch Enable/Off/Remote Contact switch to Enable or
Remote Contact.
4. Provided there is a load on the chiller, allow the machine
to operate and confirm that everything is functioning
properly. Verify that the leaving fluid temperature agrees
with the cooling set point (1 or 2), or if reset is being used,
the modified set point. Chiller is controlling to the Control Point (item ‘CTPT’) displayed on the Navigator.
Operating Sequence — The chiller is started by
switching the Enable/Off/Remote Contact switch to either
Enable or Remote Contact position. If cooler pump control is
enabled, the cooler pump is started. If condenser pump control
(30HXC) is enabled, the condenser pump is started. On a
command for cooling, the oil pump is turned on to start the
pre-lubrication process. After 20 seconds, the oil solenoid is
opened and the control reads the oil pressure from the
transducer and determines if sufficient pressure has been built
up. If there is not sufficient pressure, an alarm is generated
after the second attempt and the compressor is not started.
71
Upon building pressure, the compressor is allowed to start
(after 15 seconds). For across-the-line (XL) start chillers, the
compressor starts and comes up to full speed within 1 to 3 seconds. For Wye-Delta start chillers, contactors 1M and S (starter
contactor assembly) are closed and the compressor is started in
a Wye configuration. This method reduces the locked rotor
current requirements by approximately 60% while maintaining
enough torque to bring the compressor up to full speed.
FIELD WIRING
Field wiring is shown in Fig. 40-54.
LEGEND FOR FIG. 40-54
ALM
CFR
CMP
CNFS
CNPI
CNP-R
CWP
EMM
EWT
FIOP
FSR
FU
GFI-CO
GND
LLSV
LWT
MBB
MLV
NEC
OAT
SCB
SPT
SW
TB
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NEC FUSED DISCONNECT
Alarm
Condenser Fan Relay
Chiller Water Pump
Condenser Flow Switch
Condenser Pump Interlock
Condenser Pump Relay
Chilled Water Pump
Energy Management Module
Entering Water Thermistor
Factory-Installed Option
Flow Switch Relay
Fuse
Ground Fault Interrupter Convenience Outlet
Ground
Liquid Line Solenoid Valve
Leaving Water Thermistor
Main Base Board
Minimum Load Valve
National Electrical Code
Outdoor-Air Thermistor
Screw Compressor Board
Space Temperature Sensor
Switch
Terminal Block
Field-Wired
Factory Wired
115 V CONTROL CIRCUITS
USE 30 AMP MAXIMUM FROM
SEPARATE POWER SUPPLY
FIELD CONTROL POWER SUPPLY
230 V CONTROL CIRCUITS
USE 15 AMP MAXIMUM FROM
SEPARATE POWER SUPPLY
1
2
GND
TB4
Fig. 40 — Power Supply Wiring
* Dependant on control circuit power supply voltage.
MBB
Fig. 41 — Remote Alarm Relay Accessory Wiring; All Models, 115 or 230 V*
MBB
Fig. 42 — Chilled Water Pump Relay Wiring; All Models, 115 or 230 V*
Fig. 43 — Optional Ground Fault Interrupter; Convenience Outlet Accessory Wiring
72
Fig. 44A — 30GXN,R Minimum Load Valve Accessory Wiring, 115 or 230 V*
Fig. 44B — 30HX Minimum Load Valve Accessory Wiring, 115 or 230 V*
MBB
Fig. 45 — Condenser Pump Relay Wiring; 30HXC and Remote Condenser Fan/Liquid Line
Solenoid Valve Wiring; 30HXA 115 or 230 V*
MBB
MBB
1
3
Fig. 46 — Chilled Water Interlock and
Flow Switch Input Wiring
Fig. 47 — Remote On/Off Switch Input Wiring
73
SCB
MBB
SEE
NOTE
MBB
SEE
NOTE
NOTE: Install a 500  resistor across output terminals to convert
output signal to 2-10 vdc.
Fig. 52 — Field-Supplied Head Pressure
Device Wiring; 30HX Units
Fig. 48 — Condenser Flow Switch Interlock and
Entering/Leaving Water Thermistor Wiring;
30HXC Units
MBB
MBB
Fig. 53 — Service Port Option or
Accessory Wiring; 30GX Units
Fig. 49 — Remote Dual Setpoint Wiring; All Units
MBB
Fig. 50 — Outdoor-Air Thermistor (5Kat 77 F
[25 C]) and Space Temperature Sensor (10Kat
77 F [25 C]) All Units, Field Supplied
BLK
RED
BLK
RED
NOTE: Use signal converter for input types other than 4-20 mA.
Fig. 54 — Energy Management Module Option
or Accessory Wiring; All Units
Fig. 51 — Motormaster® Option; 30GXN,R Units
74
1
8
APPENDIX A
30GXN,R (High Ambient Data [Position 10 in model no. equal to ‘A’, ‘F’, ‘T’, or ‘V’], All Models)
ComfortLink™ Compressor Protection Module Configuration Header Punch-Outs and Must Trip Amps
UNIT
30GXN,R
080
083
090
093
106
108
114
118
VOLTS-Hz
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
PUNCHOUTS PUNCHOUTS PUNCHOUTS PUNCHOUTS
FOR COMP
FOR COMP
FOR COMP
FOR COMP
A1
A2
B1
B2
1,2,3,5,8
1,2,4,8
1,3,6
1,4,6,7,8
1,2,4,5,6,7
1,4,5,6
1,2,5,6,8
1,2,3,5,6,7
1,2,4,5
1,3,5,6,7
1,3,7,8
1,2,3,7,8
1,3,5
1,2,4,6,8
1,2,4,5,6,7
1,2
1,5
2,3,4,5,7,8
1,2,4
2,3,4,5,6,7
1,3,4,5,7,8
1,2,3,6
1,2,5,8
1,4,6,7
1,5
1,2,4,6,7,8
1,4,7
1,2,6,7,8
1,2,4,7
1,3,5,6,7
2,3,5,7
2,4,5
1,2,8
2,4,5,6,7
1,3,5
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7,8
1,2,5
2,3,4,6,7
1,3,4,7,8
1,2,4,7
1,3,5,6,7
2,3,5,7
2,4,5
1,2,8
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7,8
1,2,5
2,3,4,6,7
1,3,4,7,8
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1,2,3,4,8
1,2,4,5,6,8
1,3,4,5
1,3,5,6,8
1,2,3,5
1,3,4,8
1,2,4,5,7
1,2,3,4,6,8
1,2,3,7
1,2
1,3,4,6,7
1,2,3,5,6
1,3,4,5,6,8
1,2,3,8
1,2,3,4,8
1,2,4,5,6,8
1,3,4,5
1,3,5,6,8
1,2,3,5
1,3,4,8
1,2,4,5,7
1,2,3,4,6,8
1,2,3,7
1,2
1,3,4,6,7
1,2,3,5,6
1,3,4,5,6,8
1,2,3,8
1,2,3,4,8
1,2,4,5,6,8
1,3,4,5
1,3,5,6,8
1,2,3,5
1,3,4,8
1,2,4,5,7
1,2,3,5,6
1,2,4,6,7
1,3,5,7
1,4,5,6,7
1,2,3,8
1,3,6,7
1,2,4,7,8
1,2,3,5,8
1,2,4,8
1,3,6
1,4,6,7,8
1,2,4,5,6,7
1,2,3,6
1,2,5,8
1,4,6,8
1,5
1,2,4,6,7,8
1,5,6,8
1,2,6
75
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
COMP A1
MUST TRIP
AMPS
SETTING
94
142
232
258
116
248
150
84
128
212
234
106
224
134
116
176
288
314
144
308
186
104
158
260
288
130
268
162
140
212
348
384
174
372
224
128
194
320
354
160
324
202
140
212
348
384
174
128
194
320
354
160
324
202
COMP A2
MUST TRIP
AMPS
SETTING
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
COMP B1
MUST TRIP
AMPS
SETTING
78
118
192
214
96
206
124
70
108
176
196
88
182
110
78
118
192
214
96
206
124
70
108
176
196
88
182
110
78
118
192
214
96
206
124
88
132
220
244
110
228
138
94
142
232
258
116
104
158
262
288
130
278
168
COMP B2
MUST TRIP
AMPS
SETTING
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
APPENDIX A (cont)
30GXN,R (High Ambient Data [Position 10 in model no. equal to ‘A’, ‘F’, ‘T’, or ‘V’], All Models)
ComfortLink™ Compressor Protection Module Configuration Header Punch-Outs and Must Trip Amps
UNIT
30GXN,R
125
128
135, 390B
138, 283B, 303B,
373B
150, 370B
153, 283A, 328B,
393B, 418B
160, 415B
163, 303A
174
VOLTS-Hz
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
PUNCHOUTS PUNCHOUTS PUNCHOUTS PUNCHOUTS
FOR COMP
FOR COMP
FOR COMP
FOR COMP
A1
A2
B1
B2
1,2,5,7,8
1,3,7,8
2,4,6,7
2,7
1,3,4,6,7,8
2,4,8
1,3
1,2,5,7,8
1,3,7,8
2,4,6,7
2,7
1,3,4,6,7,8
2,4,8
1,3
1,2,5,7,8
1,3,7,8
2,4,6,7
2,7
1,3,4,6,7,8
2,4,8
1,3
1,2,5,7,8
1,3,7,8
2,4,6,7
2,7
1,3,4,6,7,8
2,4,8
1,3
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7,8
1,2,5
2,3,5,7
1,3,5,6,7,8
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6,7
1,6,8
1,2,5,7,8
1,3,7,8
2,4,6,7
2,7
1,3,4,6,7,8
2,4,8
1,3
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6,7
1,6,8
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1,2,3,7
1,2,6,7
1,4,7
1,7,8
1,2,4,6,8
1,5,6,7
1,2,6,8
1,2,3,6
1,2,5,8
1,4,6,8
1,5
1,2,4,6,7,8
1,5,6,8
1,2,6
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7,8
1,2,5
2,3,4,6,7
1,3,4,7,8
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7,8
1,2,5
2,3,4,6,7
1,3,4,7,8
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
2,5,6,7
1,4,5,6,8
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7,8
1,2,5
2,3,5,7
1,3,5,6,7,8
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6
1,6,8
1,2,5,7,8
1,3,7,8
2,4,6,7
2,7
1,3,4,6,7,8
2,4,8
1,3
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
76
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
COMP A1
MUST TRIP
AMPS
SETTING
154
234
388
428
194
398
240
154
234
388
428
194
398
240
154
234
388
428
194
398
240
154
234
388
428
194
398
240
128
194
320
354
160
348
210
188
286
472
522
236
484
294
154
234
388
428
194
398
240
188
286
472
522
236
484
294
188
286
472
522
236
COMP A2
MUST TRIP
AMPS
SETTING
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
COMP B1
MUST TRIP
AMPS
SETTING
108
164
268
298
134
276
166
104
158
262
288
130
278
168
128
194
320
354
160
324
202
128
194
320
354
160
324
202
188
286
472
522
236
404
246
128
194
320
354
160
348
210
188
286
472
522
236
488
294
154
234
388
428
194
398
240
188
286
472
522
236
COMP B2
MUST TRIP
AMPS
SETTING
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
APPENDIX A (cont)
30GXN,R (High Ambient Data [Position 10 in model no. equal to ‘A’, ‘F’, ‘T’, or ‘V’], All Models)
ComfortLink™ Compressor Protection Module Configuration Header Punch-Outs and Must Trip Amps
UNIT
30GXN,R
178, 328A, 353A,
353B
204
208
225, 370A,
450A/B, 475B
228, 453A/B,
478B
249, 475A,
500A/B
253, 373A, 393A,
478A, 503A,
503B
264, 390A,
415A, 525A/B
268, 418A, 528A,
528B
VOLTS-Hz
PUNCHOUTS
FOR COMP
A1
PUNCHOUTS
FOR COMP
A2
PUNCHOUTS
FOR COMP
B1
PUNCHOUTS
FOR COMP
B2
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6,7
1,6,8
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
1,2,5,7,8
1,3,7,8
2,4,6,7
2,7
1,3,4,6,7,8
2,4,8
1,3
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6
1,6,8
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6,7
1,6,8
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6,7
1,6,8
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6
1,6,8
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6,7
1,6,8
—
—
—
—
—
—
—
1,2,3,5,7,8
1,2,4,6
1,3,6,7
1,4,5,7
1,2,4,5,6,7,8
1,2,5,7,8
1,3,7,8
2,4,6,7
2,7
1,3,4,6,7,8
2,4,8
1,3
1,2,3,7
1,2,6,7
1,4,7
1,7,8
1,2,4,6,8
1,5,6,7
1,2,6,8
1,2,5,7,8
1,3,7,8
2,4,6,7
2,7
1,3,4,6,7,8
2,4,8
1,3
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6,7
1,6,8
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6
1,6,8
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6,7
1,6,8
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6,7
1,6,8
1,2,5,7,8
1,3,7,8
2,4,6,7
2,7
1,3,4,6,7,8
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7,8
1,2,5
2,3,5,7
1,3,5,6,7,8
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6
1,6,8
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7,8
1,2,5
2,3,5,7
1,3,5,6,7,8
1,2,5,7,8
1,3,7,8
2,4,6,7
2,7
1,3,4,6,7,8
1,2,5,7,8
1,3,7,8
2,4,6,7
2,7
1,3,4,6,7,8
2,4,8
1,3
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6
1,6,8
1,3,4,5,7
1,5,8
3,5,6
4,7,8
1,3,7
3,6,7
1,6,8
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
77
COMP A1
MUST TRIP
AMPS
SETTING
188
286
472
522
236
484
294
188
286
472
522
236
154
234
388
428
194
398
240
188
286
472
522
236
488
294
188
286
472
522
236
484
294
188
286
472
522
236
188
286
472
522
236
484
294
188
286
472
522
236
488
294
188
286
472
522
236
484
294
COMP A2
MUST TRIP
AMPS
SETTING
—
—
—
—
—
—
—
90
136
228
252
114
154
234
388
428
194
398
240
108
164
268
298
134
276
166
154
234
388
428
194
398
240
188
286
472
522
236
188
286
472
522
236
484
294
188
286
472
522
236
488
294
188
286
472
522
236
484
294
COMP B1
MUST TRIP
AMPS
SETTING
188
286
472
522
236
484
294
154
234
388
428
194
128
194
320
354
160
348
210
188
286
472
522
236
488
294
128
194
320
354
160
348
210
154
234
388
428
194
154
234
388
428
194
398
240
188
286
472
522
236
488
294
188
286
472
522
236
484
294
COMP B2
MUST TRIP
AMPS
SETTING
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
APPENDIX A (cont)
30GXN,R (High Ambient Data [Position 10 in model no. equal to ‘A’, ‘F’, ‘T’, or ‘V’], All Models)
ComfortLink™ Compressor Protection Module Configuration Header Punch-Outs and Must Trip Amps
UNIT
30GXN,R
281
301
325
350
VOLTS-Hz
PUNCHOUTS
FOR COMP
A1
PUNCHOUTS
FOR COMP
A2
PUNCHOUTS
FOR COMP
B1
PUNCHOUTS
FOR COMP
B2
575-60
380-60
460-60
380/415-50
575-60
380-60
460-60
380/415-50
575-60
380-60
460-60
380/415-50
575-60
380-60
460-60
380/415-50
1,3,4,5,7
1,5,8
1,3,7
1,6,8
1,3,4,5,7
1,5,8
1,3,7
1,6,8
1,3,4,5,7
1,5,8
1,3,7
1,6,8
1,3,4,5,7
1,5,8
1,3,7
1,6,8
1,2,3,7
1,2,6,7
1,2,4,6,8
1,2,6,8
1,2,4,5
1,3,4,6,7,8
1,2,5
1,3,4,7,8
1,2,5,7,8
1,3,7,8
1,3,4,6,7,8
1,3
1,3,4,5,7
1,5,8
1,3,7
1,6,8
1,3,4,5,7
1,5,8
1,3,7
1,6,8
1,3,4,5,7
1,5,8
1,3,7
1,6,8
1,3,4,5,7
1,5,8
1,3,7
1,6,8
1,3,4,5,7
1,5,8
1,3,7
1,6,8
1,2,3,7
1,2,6,7
1,2,4,6,8
1,2,6,8
1,2,4,5
1,3,4,6,7,8
1,2,5
1,3,4,7,8
1,2,5,7,8
1,3,7,8
1,3,4,6,7,8
1,3
1,3,4,5,7
1,5,8
1,3,7
1,6,8
78
COMP A1
MUST TRIP
AMPS
SETTING
188
286
236
294
188
286
236
294
188
286
236
294
188
286
236
294
COMP A2
MUST TRIP
AMPS
SETTING
108
164
134
166
128
194
160
202
154
234
194
240
188
286
236
294
COMP B1
MUST TRIP
AMPS
SETTING
188
286
236
294
188
286
236
294
188
286
236
294
188
286
236
294
COMP B2
MUST TRIP
AMPS
SETTING
108
164
134
166
128
194
160
202
154
234
194
240
188
286
236
294
APPENDIX A (cont)
30GXN,R (Reduced Ambient Data [Position 10 in model no. equal to ‘–’, ‘E’, ‘S’, or ‘U’], Limited Models Only)
ComfortLink™ Compressor Protection Module Configuration Header Punch-Outs and Must Trip Amps
UNIT
30GXN,R
080
083
090
093
106
108
114
118
125
VOLTS-Hz
PUNCHOUTS
FOR COMP
A1
PUNCHOUTS
FOR COMP
A2
PUNCHOUTS
FOR COMP
B1
PUNCHOUTS
FOR COMP
B2
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
1,2,3,5,6
1,2,4,6,8
1,3,5,7
1,4,5,6,7
1,2,3,8
1,3,8
1,2,4
1,2,3,4,7,8
1,2,4,5,6,7,8
1,3,4,5,7
1,3,4
1,2,3,5,8
1,3,4,8
1,2,4,5,8
1,2,3
1,2,6
1,5,6,7
2,3,4,5,6,7,8
1,2,4,7,8
1,6,8
1,3,4,5,6,7,8
1,2,3,5
1,2,4
1,3
1,4,7,8
1,2,4,5,6
1,4,5,6
1,2,5,6,8
1,2,4,7,8
1,3,5,6,7,8
2,3,5,6
2,4,5,8
1,2,7
2,3
1,3,5,8
1,2,4,5,6,8
1,3,4,5,6,7,8
2,3,4,5,7
2,3,4,6,8
1,2,5,6,7,8
2,3,4,5,7
1,3,4,5,7,8
1,2,4,7,8
1,3,5,6,7,8
2,3,5,6
2,4,5,8
1,2,7
1,2,4,5,6,8
1,3,4,5,6,7,8
2,3,4,5,7
2,3,4,6,8
1,2,5,6,7,8
2,3,4,5,7
1,3,4,5,7,8
1,2,5,7,8
1,3,7,8
2,4,6,7
2,7
1,3,4,6,7,8
2,4,8
1,3
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1,2,3,4,7,8
1,2,3
1,3,4,5,6
1,3,4,7
1,2,3,5,7
1,3,4,6
1,2,4,5,6
1,2,3,4,6,7,8
1,2,3,6,8
1,2,6
1,3,4,5,7,8
1,2,3,5,6,7
1,2,7
1,2,3,6
1,2,3,4,7,8
1,2,3
1,3,4,5,6
1,3,4,7
1,2,3,5,7
1,3,4,6
1,2,4,5,6
1,2,3,4,6,7,8
1,2,3,6,8
1,2,6
1,3,4,5,7,8
1,2,3,5,6,7
1,2,7
1,2,3,6
1,2,3,4,7,8
1,2,3
1,3,4,5,6
1,3,4,7
1,2,3,5,7
1,3,4,6
1,2,4,5,6
1,2,3,4
1,2,4,5,6
1,3,4,6
1,3,5,8
1,2,3,6,7
1,3,4
1,2,4,5,8
1,2,3,5,6
1,2,4,6,8
1,3,5,7
1,4,5,6,7
1,2,3,8
1,2,3,5,8
1,2,4,8
1,3,7
1,4,6,7
1,2,4,5,6,8
1,4,5,7,8
1,2,5,6
1,2,3,7,8
1,2,6,7,8
1,4,6
1,6,8
1,2,4,6,7
1,4
1,2,6,7
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
79
COMP A1
MUST TRIP
AMPS
SETTING
88
134
220
244
110
238
144
74
114
188
208
94
206
126
112
168
276
306
138
294
178
96
144
240
266
120
248
150
138
210
344
382
172
368
222
118
178
316
326
146
316
186
138
210
344
382
172
118
178
316
326
146
316
186
154
234
388
428
194
398
240
COMP A2
MUST TRIP
AMPS
SETTING
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
COMP B1
MUST TRIP
AMPS
SETTING
74
112
184
204
92
200
120
66
102
168
186
84
172
104
74
112
184
204
92
200
120
66
102
168
186
84
172
104
74
112
184
204
92
200
120
80
120
200
222
100
208
126
88
134
220
244
110
94
142
236
260
118
250
152
106
162
264
294
132
272
164
COMP B2
MUST TRIP
AMPS
SETTING
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
APPENDIX A (cont)
30GXN,R (Reduced Ambient Data [Position 10 in model no. equal to ‘–’, ‘E’, ‘S’, or ‘U’], Limited Models Only)
ComfortLink™ Compressor Protection Module Configuration Header Punch-Outs and Must Trip Amps
UNIT
30GXN,R
128
138, 283B, 303B,
373B
153, 283A, 328B,
393B, 418B
163, 303A
178, 328A,
353A/B
208
228, 453A/B,
478B
253, 373A, 393A,
478A, 503A/B
268, 418A,
528A/B
VOLTS-Hz
PUNCHOUTS
FOR COMP
A1
PUNCHOUTS
FOR COMP
A2
PUNCHOUTS
FOR COMP
B1
PUNCHOUTS
FOR COMP
B2
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
575-60
380-60
230-60
208/230-60
460-60
230-50
380/415-50
1,2,4,6
1,3,4,7
2,3,5,6,7,8
2,4,5,6,8
1,2,7,8
2,3,6,7,8
1,3,5,6,8
1,2,4,6
1,3,4,7
2,3,5,6,7,8
2,4,5,6,8
1,2,7,8
2,3,6,7,8
1,3,5,6,8
1,2,7,8
1,4,6,7,8
2,7
3,5,6
1,3,5,6,8
3,4,5,6
1,4,7,8
1,2,7,8
1,4,6,7,8
2,7
3,5,6
1,3,5,6,8
3,4,5,6
1,4,7,8
1,2,7,8
1,4,6,7,8
2,7
3,5,6
1,3,5,6,8
3,4,5,6
1,4,7,8
1,2,4,6
1,3,4,7
2,3,5,6,7,8
2,4,5,6,8
1,2,7,8
2,3,6,7,8
1,3,5,6,8
1,2,7,8
1,4,6,7,8
2,7
3,5,6
1,3,5,6,8
3,4,5,6
1,4,7,8
1,2,7,8
1,4,6,7,8
2,7
3,5,6
1,3,5,6,8
3,4,5,6
1,4,7,8
1,2,7,8
1,4,6,7,8
2,7
3,5,6
1,3,5,6,8
3,4,5,6
1,4,7,8
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1,2,4,6
1,3,4,7
2,3,5,6,7,8
2,4,5,6,8
1,2,7,8
2,3,6,7,8
1,3,5,6,8
1,2,4,6
1,3,4,7
2,3,5,6,7,8
2,4,5,6,8
1,2,7,8
2,3,6,7,8
1,3,5,6,8
1,2,7,8
1,4,6,7,8
2,7
3,5,6
1,3,5,6,8
3,4,5,6
1,4,7,8
1,2,7,8
1,4,6,7,8
2,7
3,5,6
1,3,5,6,8
3,4,5,6
1,4,7,8
1,2,3,5,8
1,2,4,8
1,3,7
1,4,6,7
1,2,4,5,6,8
1,4,5,7,8
1,2,5,6
1,2,4,5,6,8
1,3,4,5,6,7,8
2,3,4,5,7
2,3,4,6,8
1,2,5,6,7,8
2,3,4,5,7
1,3,4,5,7,8
1,2,4,5,6,8
1,3,4,5,6,7,8
2,3,4,5,7
2,3,4,6,8
1,2,5,6,7,8
2,3,4,5,7
1,3,4,5,7,8
1,2,4,6
1,3,4,7
2,3,5,6,7,8
2,4,5,6,8
1,2,7,8
2,3,6,7,8
1,3,5,6,8
1,2,7,8
1,4,6,7,8
2,7
3,5,6
1,3,5,6,8
3,4,5,6
1,4,7,8
1,2,4,5,6,8
1,3,4,5,6,7,8
2,3,4,5,7
2,3,4,6,8
1,2,5,6,7,8
2,3,4,5,7
1,3,4,5,7,8
1,2,4,5,6,8
1,3,4,5,6,7,8
2,3,4,5,7
2,3,4,6,8
1,2,5,6,7,8
2,3,4,5,7
1,3,4,5,7,8
1,2,4,6
1,3,4,7
2,3,5,6,7,8
2,4,5,6,8
1,2,7,8
2,3,6,7,8
1,3,5,6,8
1,2,7,8
1,4,6,7,8
2,7
3,5,6
1,3,5,6,8
3,4,5,6
1,4,7,8
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
80
COMP A1
MUST TRIP
AMPS
SETTING
136
204
338
374
170
354
214
136
204
338
374
170
354
214
170
258
428
472
214
440
266
170
258
428
472
214
440
266
170
258
428
472
214
440
266
136
204
338
374
170
354
214
170
258
428
472
214
440
266
170
258
428
472
214
440
266
170
258
428
472
214
440
266
COMP A2
MUST TRIP
AMPS
SETTING
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
136
204
338
374
170
354
214
136
204
338
374
170
354
214
170
258
428
472
214
440
266
170
258
428
472
214
440
266
COMP B1
MUST TRIP
AMPS
SETTING
94
142
236
260
118
250
152
118
178
316
326
146
316
186
118
178
316
326
146
316
186
136
204
338
374
170
354
214
170
258
428
472
214
440
266
118
178
316
326
146
316
186
118
178
316
326
146
316
186
136
204
338
374
170
354
214
170
258
428
472
214
440
266
COMP B2
MUST TRIP
AMPS
SETTING
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
APPENDIX A (cont)
30HXC Models
ComfortLink™ Compressor Protection Module Configuration Header Punch-Outs and Must Trip Amps
UNIT
30HXC
076
086
096
106
116
126
136
146
VOLTS-Hz
PUNCHOUTS
FOR COMP
A1
PUNCHOUTS
FOR COMP
A2
PUNCHOUTS
FOR COMP
B1
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
1,2,3,4,5,6,8
1,2,3,5,6,7,8
1,2,4,6
1,2,5,6
1,2,3,4,6,7
1,2,4,8
1,2,3,5,6,8
1,2,3,4,6,7,8
1,2,3,6,7
1,2,6,8
1,3,4,5,6
1,2,3,5,6,7,8
1,2,8
1,2,3,6
1,2,3,4
1,2,4,5,7,8
1,3,4,7,8
1,3,5
1,2,3,6,8
1,3,5,6,7,8
1,2,4,5,8
1,2,3,6,7,8
1,2,5,6,7
1,4,5,6,8
1,4
1,2,4,5,7,8
1,4,5,7
1,2,5,6
1,2,3,6,7,8
1,2,5,6,7
1,4,5,6,8
1,4
1,2,4,5,7,8
1,4,5,7
1,2,5,6
1,2,3,6,7,8
1,2,5,6,7
1,4,5,6,8
1,4
1,2,4,5,7,8
1,4,5,7
1,2,5,6
1,2,4,5,6,8
1,3,4,5,6,7,8
1,6,8
2,3,4,6,8
1,2,5,6,7,8
2,3,4,5,6,7,8
1,3,4,5,6
1,2,4,5,6,8
1,3,4,5,6,7,8
1,6,8
2,3,4,6,8
1,2,5,6,7,8
2,3,4,5,6,7,8
1,3,4,5,6
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1,2,3,4,5,6,8
1,2,3,5,6,7,8
1,2,4,6
1,2,5,6
1,2,3,4,6,7
1,2,4,8
1,2,3,5,6,8
1,2,3,4,5,6,8
1,2,3,5,6,7,8
1,2,4,6
1,2,5,6
1,2,3,4,6,7
1,2,4,8
1,2,3,5,6,8
1,2,3,4,5,6,8
1,2,3,5,6,7,8
1,2,4,6
1,2,5,6
1,2,3,4,6,7
1,2,4,8
1,2,3,5,6,8
1,2,3,4,5,6,8
1,2,3,5,6,7,8
1,2,4,6
1,2,5,6
1,2,3,4,6,7
1,2,4,8
1,2,3,5,6,8
1,2,3,4,6,7,8
1,2,3,6,7
1,2,6,8
1,3,4,5,6
1,2,3,5,6,7,8
1,2,8
1,2,3,6
1,2,3,4
1,2,4,5,7,8
1,3,4,7,8
1,3,5
1,2,3,6,8
1,3,5,6,7,8
1,2,4,5,8
1,2,3,4
1,2,4,5,7,8
1,3,4,7,8
1,3,5
1,2,3,6,8
1,3,5,6,7,8
1,2,4,5,8
1,2,3,6,7,8
1,2,5,6,7
1,4,5,6,7
1,4
1,2,4,5,7,8
1,4,5,7
1,2,5,6
81
COMP A1
MUST TRIP
AMPS
SETTING
54
82
136
152
68
142
86
66
100
166
184
82
174
104
80
122
202
224
102
210
126
98
148
246
272
122
252
152
98
148
246
272
122
252
152
98
148
246
272
122
252
152
118
178
294
326
146
306
184
118
178
294
326
146
306
184
COMP A2
MUST TRIP
AMPS
SETTING
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
COMP B1
MUST TRIP
AMPS
SETTING
54
82
136
152
68
142
86
54
82
136
152
68
142
86
54
82
136
152
68
142
86
54
82
136
152
68
142
86
66
100
166
184
82
174
104
80
122
202
224
102
210
126
80
122
202
224
102
210
126
98
148
244
272
122
252
152
APPENDIX A (cont)
30HXC Models
ComfortLink™ Compressor Protection Module Configuration Header Punch-Outs and Must Trip Amps
UNIT
30HXC
161
171
186
206
246
261
271
VOLTS-Hz
PUNCHOUTS
FOR COMP
A1
PUNCHOUTS
FOR COMP
A2
PUNCHOUTS
FOR COMP
B1
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7
1,2,5
2,3,4,7,8
1,3,4,6
1,2,3,7,8
1,2,6,7,8
1,4,7,8
1,6
1,2,4,6,8
1,4
1,2,6,7
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7
1,2,5
2,3,4,7,8
1,3,4,6
1,2,3,7,8
1,2,6,7,8
1,4,7,8
1,6
1,2,4,6,8
1,4
1,2,6,7
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7
1,2,5
2,3,4,7,8
1,3,4,6
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7
1,2,5
2,3,4,7,8
1,3,4,6
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7
1,2,5
2,3,4,7,8
1,3,4,6
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1,2,3,4,5,7
1,2,3,5,7,8
1,2,5,6,8
1,2,6,8
1,2,3,4,7,8
1,2,5,7,8
1,2,3,5,7
1,2,3,5,6
1,2,4,6,8
1,3,5,7
1,4,5,6,7
1,2,3,8
1,3,6,7,8
1,2,4,6
1,2,3,7,8
1,2,6,7,8
1,4,7,8
1,6
1,2,4,6,8
1,4
1,2,6,7
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7
1,2,5
2,3,4,7,8
1,3,4,6
1,2,3,5,6
1,2,4,6,8
1,3,5,7
1,4,5,6,7
1,2,3,8
1,3,6,7,8
1,2,4,6
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7
1,2,5
2,3,4,7,8
1,3,4,6
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7
1,2,5
2,3,4,7,8
1,3,4,6
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7
1,2,5
2,3,4,7,8
1,3,4,6
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7
1,2,5
2,3,4,7,8
1,3,4,6
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7
1,2,5
2,3,4,7,8
1,3,4,6
1,2,4,5
1,3,4,6,7,8
2,3,4,5
2,3,6,7
1,2,5
2,3,4,7,8
1,3,4,6
82
COMP A1
MUST TRIP
AMPS
SETTING
128
194
320
356
160
330
200
106
162
266
296
134
272
164
128
194
320
356
160
330
200
106
162
266
296
134
272
164
128
194
320
356
160
330
200
128
194
320
356
160
330
200
128
194
320
356
160
330
200
COMP A2
MUST TRIP
AMPS
SETTING
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
60
90
150
166
74
154
92
88
134
220
244
110
226
136
106
162
266
296
134
272
164
128
194
320
356
160
330
200
COMP B1
MUST TRIP
AMPS
SETTING
88
134
220
244
110
226
136
128
194
320
356
160
330
200
128
194
320
356
160
330
200
128
194
320
356
160
330
200
128
194
320
356
160
330
200
128
194
320
356
160
330
200
128
194
320
356
160
330
200
APPENDIX A (cont)
30HXA Models
ComfortLink™ Compressor Protection Module Configuration Header Punch-Outs and Must Trip Amps
UNIT
30HXA
076
086
096
106
116
126
136
146
VOLTS-Hz
PUNCHOUTS
FOR COMP
A1
PUNCHOUTS
FOR COMP
A2
PUNCHOUTS
FOR COMP
B1
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
1,2,3,4
1,2,4,5,7,8
1,3,4,7,8
1,3,5
1,2,3,6,7
1,3,5,6,7,8
1,2,4,5,8
1,2,3,5
1,2,5,6,7,8
1,4,5,6,7,8
1,4,7
1,2,4,5,6
1,4,5,8
1,2,5,7,8
1,2,4,5,6,8
1,3,4,5,6,7,8
1,6,8
2,3,4,6,8
1,2,5,6,7,8
2,3,4,5,6,7
1,3,4,5,7,8
1,2,4,8
1,3,5,6
2,3,6,8
2,4,8
1,3,4,5,6,7,8
2,4,5,6,8
1,3,6,7,8
1,2,4,8
1,3,5,6
2,3,6,8
2,4,8
1,3,4,5,6,7,8
2,4,5,6,8
1,3,6,7,8
1,2,4,8
1,3,5,6
2,3,6,8
2,4,8
1,3,4,5,6,7,8
2,4,5,6,8
1,3,6,7,8
1,2,8
1,4,6
3,4,5,6,7
3,6,7
1,3,5,7,8
3,4,7
1,5,6,8
1,2,8
1,4,6
3,4,5,6,7
3,6,7
1,3,5,7,8
3,4,7
1,5,6,8
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1,2,3,4
1,2,4,5,7,8
1,3,4,7,8
1,3,5
1,2,3,6,7
1,3,5,6,7,8
1,2,4,5,8
1,2,3,4
1,2,4,5,7,8
1,3,4,7,8
1,3,5
1,2,3,6,7
1,3,5,6,7,8
1,2,4,5,8
1,2,3,4
1,2,4,5,7,8
1,3,4,7,8
1,3,5
1,2,3,6,7
1,3,5,6,7,8
1,2,4,5,8
1,2,3,4
1,2,4,5,7,8
1,3,4,7,8
1,3,5
1,2,3,6,7
1,3,5,6,7,8
1,2,4,5,8
1,2,3,5
1,2,5,6,7,8
1,4,5,6,7,8
1,4,7
1,2,4,5,6
1,4,5,8
1,2,5,7,8
1,2,4,5,6,8
1,3,4,5,6,7,8
1,6,8
2,3,4,6,8
1,2,5,6,7,8
2,3,4,5,6,7
1,3,4,5,7,8
1,2,4,5,6,8
1,3,4,5,6,7,8
1,6,8
2,3,4,6,8
1,2,5,6,7,8
2,3,4,5,6,7
1,3,4,5,7,8
1,2,4,8
1,3,5,6
2,3,6,8
2,4,8
1,3,4,5,6,7,8
2,4,5,6,8
1,3,6,7,8
83
COMP A1
MUST TRIP
AMPS
SETTING
80
122
202
224
100
210
126
96
146
242
268
120
254
154
118
178
294
326
146
308
186
142
216
358
398
178
374
226
142
216
358
398
178
374
226
142
216
358
398
178
374
226
174
264
436
484
218
460
278
174
264
436
484
218
460
278
COMP A2
MUST TRIP
AMPS
SETTING
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
COMP B1
MUST TRIP
AMPS
SETTING
80
122
202
224
100
210
126
80
122
202
224
100
210
126
80
122
202
224
100
210
126
80
122
202
224
100
210
126
96
146
242
268
120
254
154
118
178
294
326
146
308
186
118
178
294
326
146
308
186
142
216
358
398
178
374
226
APPENDIX A (cont)
30HXA Models
ComfortLink™ Compressor Protection Module Configuration Header Punch-Outs and Must Trip Amps
UNIT
30HXA
161
171
186
206
246
261
271
VOLTS-Hz
PUNCHOUTS
FOR COMP
A1
PUNCHOUTS
FOR COMP
A2
PUNCHOUTS
FOR COMP
B1
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
575-3-60
380-3-60
230-3-60
208/230-3-60
460-3-60
230-3-50
380/415-3-50
1,3,4,6,7
1,7,8
3,7,8
5
1,4,5,6,8
4,6,8
2,3,4,5,6
1,2,5
1,4,5,6,7
2,5,6,7,8
3,4,5,8
1,3,4,7,8
2,5
1,4,5,7
1,3,4,6,7
1,7,8
3,7,8
5
1,4,5,6,8
4,6,8
2,3,4,5,6
1,2,5
1,4,5,6,7
2,5,6,7,8
3,4,5,8
1,3,4,7,8
2,5
1,4,5,7
1,3,4,6,7
1,7,8
3,7,8
5
1,4,5,6,8
4,6,8
2,3,4,5,6
1,3,4,6,7
1,7,8
3,7,8
5
1,4,5,6,8
4,6,8
2,3,4,5,6
1,3,4,6,7
1,7,8
3,7,8
5
1,4,5,6,8
4,6,8
2,3,4,5,6
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1,2,3,5,7,8
1,2,4,6
1,3,6,7,8
1,4,5,7
1,2,4,5,6,7,8
1,3,7
1,2,4,8
1,2,4,6,7
1,3,4,6
2,3,4,7,8
2,3,8
1,2,6,8
2,3,5,6,8
1,3,4,8
1,2,5
1,4,5,6,7
2,5,6,7,8
3,4,5,8
1,3,4,7,8
2,5
1,4,5,7
1,3,4,6,7
1,7,8
3,7,8
5
1,4,5,6,8
4,6,8
2,3,4,5,6
1,2,4,6,7
1,3,4,6
2,3,4,7,8
2,3,8
1,2,6,8
2,3,5,6,8
1,3,4,8
1,3,4,6,7
1,7,8
3,7,8
5
1,4,5,6,8
4,6,8
2,3,4,5,6
1,3,4,6,7
1,7,8
3,7,8
5
1,4,5,6,8
4,6,8
2,3,4,5,6
1,3,4,6,7
1,7,8
3,7,8
5
1,4,5,6,8
4,6,8
2,3,4,5,6
1,3,4,6,7
1,7,8
3,7,8
5
1,4,5,6,8
4,6,8
2,3,4,5,6
1,3,4,6,7
1,7,8
3,7,8
5
1,4,5,6,8
4,6,8
2,3,4,5,6
1,3,4,6,7
1,7,8
3,7,8
5
1,4,5,6,8
4,6,8
2,3,4,5,6
84
COMP A1
MUST TRIP
AMPS
SETTING
196
298
490
544
246
518
312
160
244
402
446
202
416
252
196
298
490
544
246
518
312
160
244
402
446
202
416
252
196
298
490
544
246
518
312
196
298
490
544
246
518
312
196
298
490
544
246
518
312
COMP A2
MUST TRIP
AMPS
SETTING
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
90
136
226
252
114
236
142
132
200
330
366
166
342
206
160
244
402
446
202
416
252
196
298
490
544
246
518
312
COMP B1
MUST TRIP
AMP
SETTING
132
200
330
366
166
342
206
196
298
490
544
246
518
312
196
298
490
544
246
518
312
196
298
490
544
246
518
312
196
298
490
544
246
518
312
196
298
490
544
246
518
312
196
298
490
544
246
518
312
APPENDIX B
compressor has 2 loaders. There is no difference in operation
between “Staged” and “Equal” circuit loading on 2 compressor
chillers.
Capacity Loading Sequence Example — The following tables show the loading sequence for a 30HX186
(50/50 split) and a 30HX161 (59/41 split) chiller. Each
STAGE
COMP
A1
0
1
2
3
4
5
6
0
1
1
1
1
1
1
STAGE
0
1
2
3
3A
3B
4
5
6
STANDARD LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 2-COMPRESSOR UNIT)
% TOTAL
LOADER
LOADER
COMP
LOADER
LOADER
CAPACITY
A1
A2
B1
B1
B2
(50/50 Split)
0
0
0
0
0
0.0
0
0
0
0
0
20.0
1
0
0
0
0
35.0
1
1
0
0
0
50.0
1
0
1
1
0
70.0
1
0
1
1
1
85.0
1
1
1
1
1
100.0
CLOSE CONTROL LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 2-COMPRESSOR UNIT)
% TOTAL
COMP
LOADER
LOADER
COMP
LOADER
LOADER
CAPACITY
A1
A1
A2
B1
B1
B2
(50/50 Split)
0
0
0
0
0
0
0.0
1
0
0
0
0
0
20.0
1
1
0
0
0
0
35.0
1
1
1
0
0
0
50.0
1
0
0
1
0
0
40.0
1
0
0
1
1
0
55.0
1
0
0
1
1
1
70.0
1
1
0
1
1
1
85.0
1
1
1
1
1
1
100.0
LEGEND
0 — Off
1 — On
% TOTAL
CAPACITY
(59/41 Split)
0.0
23.5
41.1
58.8
70.0
82.4
100.0
% TOTAL
CAPACITY
(59/41 Split)
0.0
23.5
41.1
58.8
40.0
52.4
64.7
82.4
100.0
Nominal Tons
COMPRESSOR
PART NO.
06N__123
06N__146
06N__174
06N__209
06N__250
06N__300
NOTES:
1. Stage 3A (and 3B for 59/41 split) is not used by the algorithm
when increasing stages. Stage 3 (and 2 for a 59/41 split) is not
used when decreasing stages.
2. The % Total Capacities above are calculated based on compressor nominal tons. For the case of the 59/41 split above, the 30HX
uses compressors with flow rates of 250 and 174 cfm (from compressor model numbers 06N__250 and 06N__174), which represent nominal tons of 80 and 56 (respectively) at 60 Hz. A factor of
40% is used when no loaders are energized, and a factor of 70%
is used when Loader 1 is energized. The capacity shown for
Stage 3B above is calculated as follows:
% Total Capacity = [(0.40 x 80 + 0.70 x 56)/(80 + 56)] x 100%
= 52.4 %
85
60 Hz NOM.
TONS
39
46
56
66
80
—
50 Hz NOM.
TONS
—
39
46
56
66
80
APPENDIX B (cont)
The following tables show the loading sequence for 30HX206
(57/43 split) and 30HX271 (67/33 split) chillers. All compressors
STAGE
COMP
A1
0
1
2
3
4
5
6
7
8
0
1
1
1
1
1
1
1
1
STAGE
0
1
2
3
3A
4
5
6
7
7A
8
9
have two loaders and the chillers are configured for equal circuit
loading. See Note 2.
STANDARD LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 3-COMPRESSOR UNIT)
% TOTAL
LOADER
LOADER
COMP
COMP
LOADER
LOADER
CAPACITY
A1
A2
A2
B1
B1
B2
(57/43 Split)
0
0
0
0
0
0
0.0
0
0
0
0
0
0
14.3
1
0
0
0
0
0
25.0
1
1
0
0
0
0
35.7
1
0
0
1
1
0
55.2
1
0
0
1
1
1
68.2
1
1
0
1
1
1
78.9
1
0
1
1
1
1
83.0
1
1
1
1
1
1
100.0
CLOSE CONTROL LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 3-COMPRESSOR UNIT)
% TOTAL
COMP
LOADER
LOADER
COMP
COMP
LOADER
LOADER
CAPACITY
A1
A1
A2
A2
B1
B1
B2
(57/43 Split)
0
0
0
0
0
0
0
0.0
1
0
0
0
0
0
0
14.3
1
1
0
0
0
0
0
25.0
1
1
1
0
0
0
0
35.7
1
0
0
0
1
0
0
31.6
1
0
0
0
1
1
0
44.5
1
0
0
0
1
1
1
57.5
1
1
0
0
1
1
1
68.2
1
1
1
0
1
1
1
78.9
1
0
0
1
1
1
1
65.9
1
1
0
1
1
1
1
83.0
1
1
1
1
1
1
1
100.0
LEGEND
0 — Off
1 — On
NOTES:
1. Stages 3A and 7A are not used by the algorithm when increasing stages.
Stages 3 and 7 are not used when decreasing stages.
2. The loading sequence for 30GXN,R204-264 units is the same as those shown
for the 30HX206,271 above.
86
% TOTAL
CAPACITY
(67/33 Split)
0.0
13.3
23.3
33.3
46.7
56.7
66.7
80.0
100.0
% TOTAL
CAPACITY
(67/33 Split)
0.0
13.3
23.3
33.3
26.7
36.7
46.7
56.7
66.7
60.0
80.0
100.0
APPENDIX B (cont)
staged circuit loading. Loaders A1 on compressors A1 and A2
are energized in parallel. The same is true for Loaders A2 on
both compressors A1 and A2. See Note 3.
The following tables show the loading sequence for
30HX206 (57/43 split) and 30HX271 (67/33 split) chillers. All
compressors have two loaders and the chiller is configured for
STAGE
COMP
A1
0
1
2
3
4
5
6
7
0
1
1
1
1
1
1
1
STAGE
COMP
A1
0
1
2
3
3A
4
5
6
7
8
0
1
1
1
1
1
1
1
1
1
STANDARD LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 3-COMPRESSOR UNIT)
% TOTAL
LOADER
LOADER
COMP
COMP
LOADER
LOADER
CAPACITY
A1
A2
A2
B1
B1
B2
(57/43 Split)
0
0
0
0
0
0
0.0
0
0
0
0
0
0
14.3
1
0
0
0
0
0
25.0
1
1
0
0
0
0
35.7
1
0
1
0
0
0
39.7
1
1
1
0
0
0
56.8
1
1
1
1
1
0
87.0
1
1
1
1
1
1
100.0
% TOTAL
CAPACITY
(67/33 Split)
0.0
13.3
23.3
33.3
46.7
66.7
90.0
100.0
CLOSE CONTROL LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 3-COMPRESSOR UNIT)
% TOTAL
LOADER
LOADER
COMP
COMP
LOADER
LOADER
CAPACITY
A1
A2
A2
B1
B1
B2
(57/43 Split)
0
0
0
0
0
0
0.0
0
0
0
0
0
0
14.3
1
0
0
0
0
0
25.0
1
1
0
0
0
0
35.7
0
0
1
0
0
0
22.7
1
0
1
0
0
0
39.7
1
1
1
0
0
0
56.8
1
1
1
1
0
0
74.1
1
1
1
1
1
0
87.0
1
1
1
1
1
1
100.0
% TOTAL
CAPACITY
(67/33 Split)
0.0
13.3
23.3
33.3
26.7
46.7
66.7
80.0
90.0
100.0
LEGEND
0 — Off
1 — On
NOTES:
1. Stage 3A is not used by the algorithm when increasing stages. Stage 3 is not used
by the algorithm when decreasing stages.
2. The % Total Capacities above are calculated based on compressor nominal tons.
For the case of the 57/43 split above, the 30HX uses compressors with flow rates
of 209, 123, and 250 cfm (from compressor model numbers 06N_209, 06N_123,
and 06N_250), which represent nominal tons of 66, 39, and 80 (respectively) at 60
Hz. A factor of 40% is used when no loaders are energized, and a factor of 70% is
used when Loader 1 is energized. The capacity shown for Stage 4 above is calculated as follows:
% Total Capacity=[(0.70 x 66 + 0.70 x 39 + 0.0 x 80)/(66 + 39 + 80)] x 100% =
39.7%
3. The loading sequence for 30GXN,R204-264 units is the same as those shown for
the 30HX206, 271 above.
87
APPENDIX B (cont)
The following tables show the loading sequence for a 30GXN,R350 chiller.
Each compressor has 2 loaders and the chiller is configured for equal circuit
loading. See Note 2.
STANDARD LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 4-COMPRESSOR UNIT)
STAGE
COMP
A1
LOADER
A1
LOADER
A2
COMP
A2
COMP
B1
LOADER
B1
LOADER
B2
COMP
B2
0
1
2
3
4
5
6
7
8
9
10
0
1
1
1
1
1
1
1
1
1
1
0
0
1
1
1
1
1
1
1
1
1
0
0
0
1
0
1
1
0
0
1
1
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
0
0
1
1
0
0
1
0
0
0
0
0
0
0
0
1
1
1
STAGE
COMP
A1
LOADER
A1
LOADER
A2
COMP
A2
COMP
B1
LOADER
B1
LOADER
B2
COMP
B2
0
1
2
3
3A
4
5
6
7
7A
8
9
10
11
0
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
1
1
0
0
1
1
1
0
1
1
1
1
0
0
0
1
0
0
0
1
1
0
0
0
1
1
0
0
0
0
0
0
0
0
0
1
1
1
1
1
0
0
0
0
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
% TOTAL
CAPACITY
(50/50 Split)
0.0
10.0
18.0
25.0
35.0
43.0
50.0
60.0
70.0
85.0
100.0
CLOSE CONTROL LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 4-COMPRESSOR UNIT)
LEGEND
0 — Off
1 — On
NOTES:
1. Stages 3A and 7A are not used by the algorithm when increasing stages.
Stages 3 and 7 are not used by the algorithm when decreasing stages.
2. The loading sequence for 30GXN,R281-325 units is the same as those
shown for the 30GXN,R350 above.
88
% TOTAL
CAPACITY
(50/50 Split)
0.0
10.0
18.0
25.0
20.0
28.0
35.0
43.0
50.0
45.0
60.0
70.0
85.0
100.0
APPENDIX B (cont)
The following tables show the loading sequence for a 30GXN,R350 chiller.
Each compressor has 2 loaders and the chillers are configured for staged circuit
loading. See Note 2.
STANDARD LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 4-COMPRESSOR UNIT)
STAGE
COMP
A1
LOADER
A1
LOADER
A2
COMP
A2
COMP
B1
LOADER
B1
LOADER
B2
COMP
B2
0
1
2
3
4
5
6
7
8
9
0
1
1
1
1
1
1
1
1
1
0
0
1
1
1
1
1
1
1
1
0
0
0
1
0
1
1
1
1
1
0
0
0
0
1
1
1
1
1
1
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
0
0
0
1
1
% TOTAL
CAPACITY
(50/50 Split)
0.0
10.0
18.0
25.0
35.0
50.0
68.0
75.0
85.0
100.0
CLOSE CONTROL LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 4-COMPRESSOR UNIT)
STAGE
COMP
A1
LOADER
A1
LOADER
A2
COMP
A2
COMP
B1
LOADER
B1
LOADER
B2
COMP
B2
0
1
2
3
3A
4
5
6
7
8
8A
9
10
0
1
1
1
1
1
1
1
1
1
1
1
1
0
0
1
1
0
1
1
1
1
1
1
1
1
0
0
0
1
0
0
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
0
1
1
0
0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
0
1
1
1
LEGEND
0 — Off
1 — On
NOTES:
1. Stages 3A and 8A are not used by the algorithm when increasing stages.
Stages 3 and 8 are not used by the algorithm when decreasing stages.
2. The loading sequence for 30GXN,R281-325 units is the same as those
shown for the 30GXN,R350 above.
89
% TOTAL
CAPACITY
(50/50 Split)
0.0
10.0
18.0
25.0
20.0
35.0
50.0
60.0
68.0
75.0
70.0
85.0
100.0
APPENDIX C
Available Accessories
ACCESSORY
PART NUMBER
30GX-900---001
30GX-900---002
30GX-900---003
30GX-900---013
30GX-900---024
30GX-900---009
30GX-900---010
30GX-900---034
30GX-900---048
30GX-900---049
30GX-900---015
30GX-900---016
30GX-900---017
30GX-900---018
30GX-900---019
30GX-900---020
30GX-900---030
30GX-900---039
30GX-900---023
30GX-900---035
30HX-900---010
30GX-900---027
30GX-900---032
30GX-900---036
30GX-900---038
30GX-900---045
30GX-900---046
30GX-900---047
30GX-900---067
30GX-900---068
30GX-900---069
30GX-900---070
30HX-900---017
30HX-900---018
30HX-900---020
UNITS
Condenser Grille Package
Condenser Grille Package
Condenser Grille Package
Condenser Grille Package
Condenser Grille Package
Condenser Grille Package
Condenser Grille Package
Condenser Grille Package
Minimum Load Valve
Minimum Load Valve
Sound Enclosure/Hail Guard/Wind Baffle
Sound Enclosure/Hail Guard/Wind Baffle
Sound Enclosure/Hail Guard/Wind Baffle
Sound Enclosure/Hail Guard/Wind Baffle
Sound Enclosure/Hail Guard/Wind Baffle
Sound Enclosure/Hail Guard/Wind Baffle
Sound Enclosure/Hail Guard/Wind Baffle
Sound Enclosure/Hail Guard/Wind Baffle
Vibration Isolation Pads
Vibration Isolation Pads
Vibration Isolation Pads
Insulation Kit (14, 1-Pass Cooler with
Economizer)
Insulation Kit (18, 3-Pass Cooler with
Economizer)
Insulation Kit (20, 3-Pass Cooler with
Economizer)
Insulation Kit (20, 1-Pass Cooler with
Economizer)
Insulation Kit (16, 1-Pass Cooler with
Economizer)
Insulation Kit (18, 1-Pass Cooler with
Economizer)
30GXN,R204-268 (+1P),
30HX206-271 (+1P)
30GXN,R281-350 (+1P)
30GXN,R281-350 (–1P)
30GXN,R303A,390B,415B (STD)
30GXN,R204-268 (–1P),
30GXN,R370A,373A,390A,393A,415A,418A,
450A/B, 453A/B,475A/B, 478A/B,500A/B,503A/B,
525A/B,528A/B (STD)
30GXN,R283A/B,303B,328A/B,
353A/B,370B,373B,393B,418B (STD)
30GXN,R108,125,135 (STD),
30GXN,R160,163,174,178, 30HX161-186 (+1P)
30GXN,R118,128,138,150,153 (STD)
Insulation Kit (14, 1-Pass Cooler with
Economizer)
Insulation Kit (16, 3-Pass Cooler with
Economizer)
Insulation Kit (14, 2-Pass Cooler with
Economizer)
Insulation Kit (14, 3-Pass Cooler, with
Economizer)
Insulation Kit (20, 2-Pass Cooler, with
Economizer)
Insulation Kit (14, 4-Pass Cooler, no
Economizer)
Insulation Kit (14, 1-Pass Cooler no
Economizer)
Insulation Kit (16, 4-Pass Cooler with
Economizer)
Insulation Kit (16, 1-Pass Cooler with
Economizer)
Insulation Kit (18, 1-Pass Cooler with
Economizer)
Insulation Kit (16, 4-Pass Cooler, no
Economizer)
30GXN,R118,128,138,150,153 (+1P)
30GXN,R281-350 (STD)
30GXN,R080,083,090,093 (+1P),
30HX076-096 (+1P)
30HX116-146 (–1P)
30GXN,R108,125,135 (+1P)
30HX-900---023
30GXN,R160-178 (–1P),
30HX161-186 (–1P)
30HX206-271 (–1P)
30HX-900---024
30GXN,R106,114 (+1P),
30HX106 (+1P)
30HX-900---021
DESCRIPTION OF ACCESSORY
30GXN,R080,090*
30GXN,R083, 093, 106, 108, 114, 125, 135*
30GXN,R118, 128, 138, 150, 160*
30GXN,R153, 174, 204, 225*
30GXN,R163, 178*
30GXN,R249, 264*
30GXN,R208, 228*
30GXN,R253, 268, 281-350
30GXN,R and 30HX (115 V Control)
30GXN,R and 30HX (230 V Control)
30GXN,R080-350
30GXN,R080,090*
30GXN,R083, 093, 106, 108, 114, 125, 135*
30GXN,R118, 128, 138, 150, 160*
30GXN,R153, 174, 204, 225*
30GXN,R163, 178, 249, 264*
30GXN,R208, 228*
30GXN,R253, 268, 281-350*
30GXN,R080-228, 264*
30GXN,R253, 268-350*
30HX All
30GXN,R118,128,138,150,153 (–1P)
*And associated modular sizes.
LEGEND
(STD) — Chillers with standard number of cooler passes
(–1P) — Chillers with minus one pass cooler option
(+1P) — Chillers with plus one pass cooler option
90
COMMENTS
Both circuits
Both circuits
Header end only
One side per package
One side per package
One side per package
One side per package
One side per package
One side per package
One side per package
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
APPENDIX C (cont)
Available Accessories (cont)
ACCESSORY
PART NUMBER
UNITS
DESCRIPTION OF ACCESSORY
30GXN,R080,083,090,093, 30HX076-096 (STD)
30HX-900---035
30HX116-146 (+1P)
30GXN,R106,114 (STD)
30HX-900---036
30HX106 (STD)
30GXN,R080,083,090,093, 30HX076-096 (–1P),
30HX-900---037
30HX116-146 (STD)
30GXN,R108,125,135 (–1P),
30HX-900---038
30GXN,R160,163,174,178,30HX161-186 (STD)
30GXN,R204-268 (STD),
30HX-900---039
30HX206-271 (STD)
30GXN,R106,114 (–1P),
30HX-900---040
30HX106 (–1P)
30HX-900---001
30HX116-271
30HX-900---011
30HX076-106
30HX-900---004
30HX076-146
30HX-900---005
30HX161-186
30HX-900---015
30HX206-271
30HX-900---032
30GXN,R and 30HX All
30HX-900---033
30HX (230 V, 460 V)
30HX-900---034
30HX (575 V)
30GX-900---050
30GXN,R (230 V, 460 V)
30GX-900---051
30GXN,R (575 V)
30GX-900---052
30GXN,R (208 V)
30GX-900---055
30GXN,R (230 V, 460 V)
30GX-900---056
30GXN,R (575 V)
30GX-900---057
30GXN,R (208 V)
30GX-900---058
30GXN,R220-528 Duplex
30GX-900---071
30GXN,R080-150, 160*
30GX-900---072
30GXN,R080-150, 160*
30GX-900---073
30GXN,R080-150,160*
30GX-900---074
30GXN,R153,163-350*
30GX-900---075
30GXN,R153,163-350*
30GX-900---076
30GXN,R153,163-350*
CEPL130322-02 30GXN,R and 30HX All
CPNLDLK-01
30GXN,R and 30HX All
30GXN,R and 30HX All
CPNLDPT-01
CRLIDASY001A00 30GXN,R and 30HX All
30GT-911---049
30GXN,R and 30HX All
30GT-911---057
30GXN,R All
30GT-911---063
30GXN,R All
Insulation Kit (14, 3-Pass Cooler, no
Economizer)
Insulation Kit (16, 3-Pass Cooler, no
Economizer)
Insulation Kit (14, 2-Pass Cooler, no
Economizer)
Insulation Kit (16, 2-Pass Cooler, with
Economizer)
Insulation Kit (18, 2-Pass Cooler, with
Economizer)
Insulation Kit (16, 2-Pass Cooler, no
Economizer)
Sound Enclosure Panels
Sound Enclosure Panels
Victaulic Condenser Connections (18 in.)
Victaulic Condenser Connections (20 in.)
Victaulic Condenser Connections (22 in.)
Energy Management Module
Control Transformer
Control Transformer
Control Transformer (080-178*)
Control Transformer (080-178*)
Control Transformer (080-178*)
Control Transformer (204-350*)
Control Transformer (204-350*)
Control Transformer (204-350*)
Duplex Trim Kit
Motormaster® V Control (575 V)
Motormaster V Control (208/230 V)
Motormaster V Control (380/460 V)
Motormaster V Control (575 V)
Motormaster V Control (208/230 V)
Motormaster V Control (380/460 V)
Chillervisor System Manager III
DataLink Control Panel
DataPort Control Panel
Remote Enhanced Display
GFI Convenience Outlet (60 Hz only)
Unit Control Display Window
Remote Service Port
*And associated modular sizes.
LEGEND
(STD) — Chillers with standard number of cooler passes
(–1P)
— Chillers with minus one pass cooler option
(+1P)
— Chillers with plus one pass cooler option
91
COMMENTS
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Tubesheets and heads
Single controller
Single controller
Single controller
Two controllers
Two controllers
Two controllers
APPENDIX D
DataLINK device is an interface device that allows other HVAC
control systems to read and change (“read/write”) values in
system elements connected to a CCN bus. Both DataPort and
DataLINK devices request data from a specified CCN system
element and translate this data into ASCII characters off
network. Information from the 30GXN,GXR,HX chiller control
to support interface are listed in the following tables.
Building Interface — The 30GXN,GXR,HX chiller can
be interfaced with multi-vendor control systems through 3 levels
of inter-operability using BacLink, DataPort™, or DataLINK™
devices. BacLink functions as a gateway between a CCN and a
BACnet system to facilitate the passing of data from the CCN to
BACnet. The Carrier DataPort is an interface device that allows
other HVAC control systems to “read only” values in system
elements connected to a CCN communication bus. The Carrier
Object Definitions
30GXN/GXR/HXA/HXC Series 6 with Software Version 1.1 and later
CCN Table
Name
Description
GENERAL PARAMETERS
Control Mode
A_UNIT
CIRCADIO
CIRCA_AN
Occupied
CCN Chiller
Alarm State
Active Demand Limit
Override Modes In Effect
Percent Total Capacity
Active Setpoint
Control Point
Entering Fluid Temp
Leaving Fluid Temp
Emergency Stop
Minutes Left for Start
Heat/Cool Select
CIRC. A DISCRETE OUTPUTS
Compressor A1 Relay
Compressor A2 Relay
Loader A1 Relay
Loader A2 Relay
Minimum Load Valve
Oil Heater
Motor Cooling A1 Solenoid
Motor Cooling A2 Solenoid
Oil Pump
Oil Solenoid A1
Oil Solenoid A2
Status
Units
DataPort
DataLink
BAClink
STAT
RO
RO
RO
OCC
CHIL_S_S
ALM
DEM_LIM
MODE
CAP_T
SP
CTRL_PNT
EWT
LWT
EMSTOP
MIN_LEFT
HEATCOOL
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RW
RO
RW
RO
RO
RO
RW
RO
RO
RW
RO
RW
RO
RW
RO
RW
NA
RO
NA
RW
RO
RO
RW
NA
RW
Off/On
Off/On
Off/On
Off/On
Off/On
Off/On
Off/On
Off/On
Off/On
Off/On
Off/On
K_A1_RLY
K_A2_RLY
LOADR_A1
LOADR_A2
MLV
OILA_HTR
MTRCL_A1
MTRCL_A2
OILPMP_A
OILSL_A1
OILSL_A2
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
NA
NA
NA
NA
NA
NA
NA
NA
NA
Off/On
Off/On
Close/Open
K_A1_FBK
K_A2_FBK
OILA_SW
RO
RO
RO
RO
RO
RO
NA
NA
NA
0 = Service Test
1 = OFF Local
2 = OFF CCN
3 = OFF Clock
4 = OFF Emergency
5 = ON Local
6 = ON CCN
7 = ON Clock
No/Yes
Start/Stop
Normal/Alert/Alarm
0 to 100
No/Yes
0 to 100
-20 to 70 (-28.8 to 21.1)
-20 to 70 (-28.8 to 21.1)
snnn.n
snnn.n
Enable/Emstop
00:00 to 15:00
Heat/Cool
%
%
°F (°C)
°F (°C)
°F (°C)
°F (°C)
Minutes
Point
CIRC. A DISCRETE INPUTS
Compressor A1 Feedback
Compressor A2 Feedback
Oil Level Switch
CIRCUIT A ANALOG VALUES
Percent Total Capacity
Percent Available Cap.
Circuit Running Current
Discharge Pressure
Suction Pressure
Economizer Pressure
Discharge Superheat Temp
Discharge Gas Temp
Discharge Gas Temp – A1
Discharge Gas Temp – A2
Saturated Condensing Tmp
Saturated Suction Temp
EXV% Open
Variable Head Press Pct.
0 to 100
0 to 100
0 to 1200
nnn.n
nnn.n
nnn.n
snnn.n
nnn.n
nnn.n
nnn.n
snnn.n
snnn.n
0 to 100
0 to 100
%
%
Amps
PSIG (KPA)
PSIG (KPA)
PSIG (KPA)
°F (°C)
°F (°C)
°F (°C)
°F (°C)
°F (°C)
°F (°C)
%
%
CAPA_T
CAPA_A
A_CURR
DP_A
SP_A
ECNP_A
SH_A
DISTMP_A
DISTMPA1
DISTMPA2
TMP_SCTA
TMP_SSTA
EXV_A
VHPA
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
NA
RO
RO
NA
RO
NA
COMP A1 ANALOG VALUES
A1 Oil Pressure Diff.
A1 Oil Pressure
A1 Motor Temperature
Comp A1 Running Current
Comp A1 % Must Trip Amps
nnn.n
nnn.n
nnn.n
0 to 600
0 to 100
PSIG (KPA)
PSIG (KPA)
°F (°C)
Amps
%
DOP_A1
OP_A1
TMTR_A1
A1_CURR
A1_MTA
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
NA
NA
NA
NA
NA
COMP A2 ANALOG VALUES
A2 Oil Pressure Diff.
A2 Oil Pressure
A2 Motor Temperature
Comp A2 Running Current
Comp A2 % Must Trip Amps
nnn.n
nnn.n
nnn.n
0 to 600
0 to 100
PSIG (KPA)
PSIG (KPA)
°F (°C)
Amps
%
DOP_A2
OP_A2
TMTR_A2
A2_CURR
A2_MTA
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
NA
NA
NA
NA
NA
92
RO
RO
NA
NA
APPENDIX D (cont)
Object Definitions (cont)
30GXN/GXR/HXA/HXC Series 6 with Software Version 1.1 and later
CCN Table
Name
CIRCBDIO
CIRCB_AN
Description
CIRC. B DISCRETE OUTPUTS
Compressor B1 Relay
Compressor B2 Relay
Loader B1 Relay
Loader B2 Relay
Minimum Load Valve
Oil Heater
Motor Cooling B1 Solenoid
Motor Cooling B2 Solenoid
Oil Pump
Oil Solenoid B1
Oil Solenoid B2
Status
Units
Point
DataPort
DataLink
BAClink
Off/On
Off/On
Off/On
Off/On
Off/On
Off/On
Off/On
Off/On
Off/On
Off/On
Off/On
K_B1_RLY
K_B2_RLY
LOADR_B1
LOADR_B2
MLV
OILB_HTR
MTRCL_B1
MTRCL_B2
OILPMP_B
OILSL_B1
OILSL_B2
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
NA
NA
NA
NA
NA
NA
NA
NA
NA
Off/On
Off/On
Close/Open
K_B1_FBK
K_B2_FBK
OILB_SW
RO
RO
RO
RO
RO
RO
NA
NA
NA
CIRC. B DISCRETE INPUTS
Compressor B1 Feedback
Compressor B2 Feedback
Oil Level Switch
CIRCUIT B ANALOG VALUES
Percent Total Capacity
Percent Available Cap.
Circuit Running Current
Discharge Pressure
Suction Pressure
Economizer Pressure
Discharge Superheat Temp
Discharge Gas Temp
Discharge Gas Temp – B1
Discharge Gas Temp - B2
Saturated Condensing Tmp
Saturated Suction Temp
EXV% Open
Variable Head Press Pct.
0 to 100
0 to 100
0 to 1200
nnn.n
nnn.n
nnn.n
snnn.n
nnn.n
nnn.n
nnn.n
snnn.n
snnn.n
0 to 100
0 to 100
%
%
Amps
PSIG (KPA)
PSIG (KPA)
PSIG (KPA)
°F (°C)
°F (°C)
°F (°C)
°F (°C)
°F (°C)
°F (°C)
%
%
CAPB_T
CAPB_A
B_CURR
DP_B
SP_B
ECNP_B
SH_B
DISTMP_B
DISTMPB1
DISTMPB2
TMP_SCTB
TMP_SSTB
EXV_B
VHPB
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
NA
RO
RO
NA
RO
NA
COMP B1 ANALOG VALUES
B1 Oil Pressure Diff.
B1 Oil Pressure
B1 Motor Temperature
Comp B1 Running Current
Comp B1 % Must Trip Amps
nnn.n
nnn.n
nnn.n
0 to 600
0 to 100
PSIG (KPA)
PSIG (KPA)
°F (°C)
Amps
%
DOP_B1
OP_B1
TMTR_B1
B1_CURR
B1_MTA
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
NA
NA
NA
NA
NA
nnn.n
nnn.n
nnn.n
0 to 600
0 to 100
PSIG (KPA)
PSIG (KPA)
°F (°C)
Amps
%
DOP_B2
OP_B2
TMTR_B2
B2_CURR
B2_MTA
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
NA
NA
NA
NA
NA
FAN_1
FAN_2
FAN_3
FAN_4
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
COMP B2 ANALOG VALUES
B2 Oil Pressure Diff.
B2 Oil Pressure
B2 Motor Temperature
Comp B2 Running Current
Comp B2 % Must Trip Amps
FANS
Fan 1 Relay *
Fan 2 Relay †
Fan 3 Relay
Fan 4 Relay
Off/On
Off/On
Off/On
Off/On
RO
RO
NA
NA
UNIT ANALOG VALUES
Cooler Entering Fluid
Cooler Leaving Fluid
Condenser Entering Fluid
Condenser Leaving Fluid
Lead/Lag Leaving Fluid
snnn.n
snnn.n
snnn.n
snnn.n
snnn.n
°F (°C)
°F (°C)
°F (°C)
°F (°C)
°F (°C)
COOL_EWT
COOL_LWT
COND_EWT
COND_LWT
DUAL_LWT
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
NA
TEMPERATURE RESET
4-20 mA Reset Signal
Outside Air Temperature
Space Temperature
nn.n
snnn.n
snnn.n
mA
°F (°C)
°F (°C)
RST_MA
OAT
SPT
RO
RO
RO
RO
RW
RW
RO
NA
NA
nn.n
Off/On
Off/On
0 = Normal
1 = Redline
2 = Loadshed
mA
LMT_MA
DMD_SW1
DMD_SW2
DL_STAT
RO
RO
RO
RO
RO
RO
RO
RO
RO
NA
NA
RO
OPTIONS
DEMAND LIMIT
4-20 mA Demand Signal
Demand Limit Switch 1
Demand Limit Switch 2
CCN Loadshed Signal
93
APPENDIX D (cont)
Object Definitions (cont)
30GXN/GXR/HXA/HXC Series 6 with Software Version 1.1 and later
CCN Table
Name
OPTIONS
(cont)
SETPOINT
Description
—
—
—
—
—
Units
Point
DataPort
DataLink
BAClink
PUMPS
Cooler Pump Relay
Condenser Pump Relay
Off/On
Off/On
COOL_PMP
COND_PMP
RO
RO
RO
RO
RO
RO
MISCELLANEOUS
Dual Setpoint Switch
Cooler Flow Switch
Condenser Flow Switch
Ice Done
Cooler Heater
4-20 mA Cooling Setpoint
4-20 mA Heating Setpoint
Liq. Line Solenoid Valve
Off/On
Off/On
Off/On
No/Yes
Off/On
nn.n
nn.n
Open/Close
DUAL_IN
COOLFLOW
CONDFLOW
ICE
COOL_HTR
CSP_IN
HSP_IN
LLSV
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
NA
NA
NA
NA
NA
NA
NA
NA
mA
mA
Dual Chiller Size
Dual Chiller Pct Total Cap
Dual Chiller Tons Avail
Dual Chiller Pct Avail Cap
COOLING
Cooling Setpoint 1
Cooling Setpoint 2
ICE Setpoint
nnn
0-100
nnn
0-100
Tons
%
Tons
%
SIZE_DPX
CAPT_DPX
SIZEADPX
CAPA_DPX
RO
RO
RO
RO
RO
RO
RO
RO
NA
NA
NA
NA
-20 to 70 (-28.8 to 21.1)
-20 to 70 (-28.8 to 21.1)
-20 to 32 (-28.8 to 0.0)
°F (°C)
°F (°C)
°F (°C)
CSP1
CSP2
CSP3
NA
NA
NA
RW
RW
RW
RW
NA
NA
HEATING
Heating Setpoint 1
Heating Setpoint 2
80 to 140 (26.7 to 60.0)
80 to 140 (26.7 to 60.0)
°F (°C)
°F (°C)
HSP1
HSP2
NA
NA
RW
RW
RW
NA
RAMP LOADING
Cooling Ramp Loading
Heating Ramp Loading
0.2 to 2.0 (0.1 to 1.1)
0.2 to 2.0 (0.1 to 1.1)
CRAMP
HRAMP
NA
NA
RW
RW
NA
NA
HEAD PRESSURE
Head Pressure Setpoint A
Head Pressure Setpoint B
80 to 140 (26.7 to 60.0)
80 to 140 (26.7 to 60.0)
°F (°C)
°F (°C)
HSP_A
HSP_B
NA
NA
RW
RW
NA
NA
0.1 to 20.0
0
00000000
00:00
00:00
00000000
00:00
00:00
00000000
00:00
00:00
00000000
00:00
00:00
00000000
00:00
00:00
00000000
00:00
00:00
00000000
00:00
00:00
00000000
00:00
00:00
°F (°C)
Hours
APRCH_SP
OVR-EXT
DOW1
OCCTOD1
UNOCTOD1
DOW2
OCCTOD2
UNOCTOD2
DOW3
OCCTOD3
UNOCTOD3
DOW4
OCCTOD4
UNOCTOD4
DOW5
OCCTOD5
UNOCTOD5
DOW6
OCCTOD6
UNOCTOD6
DOW7
OCCTOD7
UNOCTOD7
DOW8
OCCTOD8
UNOCTOD8
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
NA
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Approach Setpoint
Timed Override Hours
Period 1 DOW (MTWTFSSH)
Occupied Time
Unoccupied Time
Period 2 DOW (MTWTFSSH)
Occupied Time
Unoccupied Time
Period 3 DOW (MTWTFSSH)
Occupied Time
Unoccupied Time
Period 4 DOW (MTWTFSSH)
Occupied Time
OCCPC01S
Unoccupied Time
Period 5 DOW (MTWTFSSH)
Occupied Time
Unoccupied Time
Period 6 DOW (MTWTFSSH)
Occupied Time
Unoccupied Time
Period 7 DOW (MTWTFSSH)
Occupied Time
Unoccupied Time
Period 8 DOW (MTWTFSSH)
Occupied Time
Unoccupied Time
°C
°F
NA
RO
RW
Status
LEGEND
Degrees Celsius
Degrees Fahrenheit
Not Available
Read Only
Read/Write
*Circuit A Condenser Fan Output (30HXA only).
†Circuit B Condenser Fan Output (30HXA only).
94
APPENDIX E
The following charts list pressure drops for coolers and condensers.
100
136, 146
116, 126
076, 086
186
096
PRESSURE DROP (FT WG)
161, 171
106
206
246-271
10
1
100
1000
COOLER FLOW RATE (GPM)
Unit Size Range
NOTE: Ft of water = 2.31 x psig.
30HX COOLER PRESSURE DROP — ENGLISH
1000
116, 126
PRESSURE DROP (KPA)
106
076, 086 096
100
136, 146
161, 171
186
206
246-271
10
1
1
10
COOLER FLOW RATE (L/S)
Unit Size Range
30HX COOLER PRESSURE DROP — SI
95
100
APPENDIX E (cont)
Unit Size Range
NOTE: Ft of water = 2.31 x psig.
30HX CONDENSER PRESSURE DROP — ENGLISH
Unit Size Range
30HX CONDENSER PRESSURE DROP — SI
96
APPENDIX E (cont)
200
50
40
30
0,
08
3,
10
09
6,
0,
10
09
11
8,
3
8
,1
11
12
4
25
8,
,1
13
3
8,
16
15 5
0,
0,
16
15
3,
3
17
17
8
4
100
90
5
11
4
8,
09
10
6,
10
3,
08
0,
8,
08
50
11
8,
12
5,
13
13
8,
5
15
16
0,
0,
15
16
3
3,
17
4
17
8
6
60
12
7
0,
70
PRESSURE DROP (kPa)
10
9
8
09
3
80
08
PRESSURE DROP (ft wg)
20
40
4
30
3
20
2
1
100
200
300
400
500
600 700
10
30
40
COOLER FLOW RATE (L/s)
NOTE: Ft of water = 2.31 x psig.
30GXN,R080-178 COOLER PRESSURE DROP —
ENGLISH
30GXN,R080-178 COOLER PRESSURE DROP —
SI
100
8
68
10
PRESSURE DROP (kpa)
1000
22
5
22
24
8
9,
25
3,
26
4,
2
PRESSURE DROP (ft wg)
20
10
COOLER FLOW RATE (GPM)
,
04
20
2
100
204, 208
249, 253, 264, 268
10
225, 228
1
10
100
COOLER FLOW RATE (L/s)
30GXN,R204-268 COOLER PRESSURE DROP —
SI
1
100
1000
COOLER FLOW RATE (GPM)
30GXN,R204-268 COOLER PRESSURE DROP —
ENGLISH
97
APPENDIX E (cont)
PRESSURE DROP (ft wg)
100
10
1
100
COOLER FLOW RATE (GPM)
10000
30GXN,R281-350 COOLER PRESSURE DROP — ENGLISH
NOTE: Ft of water = 2.31 x psig.
PRESSURE DROP (kpa)
1000
100
10
1
10
COOLER FLOW RATE (L/s)
100
30GXN,R281-350 COOLER PRESSURE DROP — SI
98
APPENDIX E (cont)
100
303
283
370
PRESSURE DROP (ft wg)
415
390
10
1
1000
100
10000
COOLER FLOW RATE (GPM)
30GXN,R283, 303, 370, 390, 415 DUPLEX COOLER PRESSURE DROP — ENGLISH
100
PRESSURE DROP (ft wg)
328, 353, 373
393, 418
10
500, 503, 525, 528
450, 453, 475, 478
1
100
1000
10000
COOLER FLOW RATE (GPM)
30GXN,R328, 353, 373, 393, 418-528 DUPLEX COOLER PRESSURE DROP — ENGLISH
99
APPENDIX E (cont)
1000
PRESSURE DROP (kPa)
303
100
283
370
415
390
10
1
100
10
COOLER FLOW RATE (L/s)
30GXN,R283, 303, 370, 390, 415 DUPLEX COOLER PRESSURE DROP — SI
328, 353, 373
PRESSURE DROP (kPa)
100
393, 418
500, 503, 525, 528
450, 453, 475, 478
10
1
10
100
COOLER FLOW RATE (L/s)
30GXN,R328, 353, 373, 393, 418-528 DUPLEX COOLER PRESSURE DROP — SI
100
101
Sightglass
Dry Eye
EXV
7
3
1
Oil
Pump
Oil Filter
(External)
Check
Valve
Oil Level
Switch
2
Minimum Load Control
Solenoid (Option)
Minimum Load
Control Valve
(Option)
Check
Valve
4
1
5
3
Relief Valve
Oil Filter
(Internal)
Loader 2 Loader 1
6
Equalizer Line
Suction Service Valve (Option)
Oil
Pump
Oil Filter
(External)
Oil Heater
Back Pressure Valve
Relief Valve
2
Oil Level
Switch
Discharge
Service
Valve
Condenser Coil
Condenser Coil
8
EXV
EXV
1
Strainer/ 2
Filter Drier
3
4
5
6
7
8
Liquid Line
Service Valve
Cooler Heater
(Option)
Motor Cooling Solenoid Valve
Typical System Components, 30GXN,GXR080-106,114, Without Economizer
Suction Service Valve (Option)
Relief Valve
4
Loader 1 Loader 2
Oil Filter
(Internal)
5
6
Oil Heater
Relief Valve
Discharge
Service
Valve
Back Pressure Valve
Condenser Coil
Condenser Coil
Equalizer Line
Cooler Heater
(Option)
Flow Switch
Strainer/
Filter Drier
Muffler
Liquid Line
Service Valve
Motor Cooling Solenoid Valve
Condenser Fans
Muffler
Condenser Fans
LEGEND
Electronic Expansion Valve
Suction Pressure Transducer
Discharge Pressure Transducer
Economizer Pressure Transducer
Oil Pressure Transducer
High Pressure Switch
Discharge Gas Thermistor
Entering Water Thermistor
Leaving Water Thermistor
Sightglass
Dry Eye
— Device Connection
— Fusible Plug
— High Flow Schrader Valve
Backseating Service Valve
— with Refrigerant Port
— Refrigerant Access Fitting
—
—
—
—
—
—
—
—
—
APPENDIX F
102
TXV
Solenoid
Valve
Sightglass
Dry Eye
EXV
7
5
6
1
Check
Valve
Oil Level
Switch
2
Minimum Load Control
Solenoid (Option)
Minimum Load
Control Valve
(Option)
Check
Valve
4
5
1
Relief Valve
— Device Connection
— Fusible Plug
— High Flow Schrader Valve
— Backseating Service Valve
with Refrigerant Port
— Refrigerant Access Fitting
EXV
Sightglass
Dry Eye
Economizer
TXV
Economizer
8
TXV
Solenoid
Valve
Strainer/
Filter Drier
LEGEND
EXV — Electronic Expansion Valve
SSV — Suction Service Valve
TXV — Thermostatic Expansion
Valve
1
— Suction Pressure Transducer
2
— Discharge Pressure Transducer
3
— Economizer Pressure
Transducer
— Oil Pressure Transducer
Liquid Line 4
— High Pressure Switch
Service Valve 5
6
— Discharge Gas Thermistor
7
— Entering Water Thermistor
8
— Leaving Water Thermistor
Cooler Heater
(Option)
Econo. Serv.
Valve
(SSV
Oil Filter Option)
(Internal)
3
Loader 2 Loader 1
6
Equalizer Line
Suction Service Valve (Option)
Oil
Pump
Oil Filter
(External)
Oil Heater
Back Pressure Valve
Relief Valve
2
Oil Level
Switch
Discharge
Service
Valve
Condenser Coil
Condenser Coil
Motor Cooling
Solenoid Valve
Typical System Components, 30GXN,GXR108,125-178, With Economizer
Suction Service Valve (Option)
Relief Valve
4
Oil
Pump
Oil Filter
(External)
Oil Heater
Relief Valve
Loader 1 Loader 2
Equalizer Line
Discharge
Service
Valve
Back Pressure Valve
Condenser Coil
Condenser Coil
Econo. Serv. 3
Valve
(SSV Oil Filter
Option) (Internal)
Motor Cooling
Solenoid Valve
Cooler Heater
(Option)
Flow Switch
Economizer
Economizer
TXV
Strainer/
Filter Drier
Liquid Line
Service Valve
Muffler
Condenser Fans
Muffler
Condenser Fans
APPENDIX F (cont)
103
Sightglass
Dry Eye
4
Oil
Pump
Suction Service Valve (Option)
1
Oil Filter
(Internal)
5
Loader 1 Loader 2
Relief Valve
Cooler Heater
(Option)
Flow Switch
7
3
Econ.
Solenoid
6
Relief Valve
4
Suction Service Valve (Option)
Check
Valve
OIl Filter
(External)
5
6
Oil Filter
(Internal)
Loader 2 Loader 1
2
Oil Level
Switch Oil Heater
Back Pressure Valve
Condenser Coil
Condenser Coil
Discharge
Service
Valve
Condenser Coil
Condenser Coil
Motor Cooling
Solenoid Valve
8
Cooler Heater
(Option)
Econ.
Solenoid
Minimum Load
Control Valve
(Option)
Minimum Load Control
Solenoid (Option)
— Device Connection
— Fusible Plug
— High Flow Schrader Valve
— Backseating Service Valve
with Refrigerant Port
— Refrigerant Access Fitting
LEGEND
EXV — Electronic Expansion Valve
SSV — Suction Service Valve
TXV — Thermostatic Expansion
Valve
1
— Suction Pressure Transducer
2
— Discharge Pressure Transducer
3
— Economizer Pressure Transducer
4
— Oil Pressure Transducer
5
— High Pressure Switch
6
— Discharge Gas Thermistor
7
— Entering Water Thermistor
8
— Leaving Water Thermistor
Typical System Components, 30GXN,GXR204-268 Circuit A, 30GXN,GXR281-350 Circuit A and B, With Economizer
EXV
Econo. Serv.
Valve
(SSV
Option)
Economizer
TXV
Solenoid
Economizer
Valve
TXV
Strainer/
Filter Drier
Motor Cooling
Solenoid Valve
Equalizer Line
Muffler
Liquid Line
Service Valve
Condenser Fans
Muffler
Condenser Fans
APPENDIX F (cont)
104
Cooler Heater
(Option)
Flow Switch
7
Discharge
Service
Valve
Minimum Load
Control Valve
(Option)
Check
Valve
4
5
1
Motor Cooling
Relief Valve
Oil Filter
(Internal)
3
Suction Service Valve (Option)
Oil
Pump
6
Equalizer Line
Loader 2 Loader 1
Oil Heater
Oil Filter
(External)
Oil Level
Switch
Back Pressure Valve
Relief Valve
2
Condenser Coil
Condenser Coil
EXV
Sightglass
Dry Eye
Econo. Serv.
Valve
(SSV Option)
— Device Connection
— Fusible Plug
— High Flow Schrader Valve
— Backseating Service Valve
with Refrigerant Port
— Refrigerant Access Fitting
LEGEND
EXV — Electronic Expansion Valve
SSV — Suction Service Valve
TXV — Thermostatic Expansion
Valve
1
— Suction Pressure Transducer
2
— Discharge Pressure Transducer
3
— Economizer Pressure
Transducer
4
— Oil Pressure Transducer
5
— High Pressure Switch
6
— Discharge Gas Thermistor
7
— Entering Water Thermistor
8
— Leaving Water Thermistor
Economizer
TXV
Economizer
8
TXV
Solenoid
Valve
Strainer/
Filter Drier
Liquid Line
Service Valve
Cooler Heater
(Option)
Solenoid Valve
Typical System Components, 30GXN,GXR204-268 Circuit B, With Economizer
Condenser Coil
Condenser Coil
Minimum Load Control
Solenoid (Option)
Condenser Fans
Muffler
Condenser Fans
APPENDIX F (cont)
105
Sightglass
Dry Eye
EXV
Sightglass
Dry Eye
Strainer
Flow
Switch
7
Filter Drier
Liquid Line Solenoid
Valve (Brine Option)
9
Motor Cooling
Solenoid Valve
5
3
4
Oil
Pump
Minimum Load Control
Solenoid (Option)
Oil
Pump
4
1
5
6
Relief Valve
Oil Filter
(Internal)
3
Loader 2 Loader 1
(w/o SSV Option)
Relief Valve (SSV Option)
Discharge
Service
Valve
Filter
Drier
Sightglass
Dry Eye
Strainer
8
Liquid Line
Solenoid Valve
(Brine Option)
Typical System Components, 30HXC076-146, Without Economizer
Suction Service Valve (Option)
Check
Valve
Relief
Valve
2
Liquid Line
Service Valve
Oil Level Switch &
Oil Level Indicating
Sightglasses
Oil Filter
(External)
Minimum Load
Control Valve
(Option)
Check
Valve
Oil Filter
(External)
Suction Service Valve (Option)
Relief Valve
Oil Filter
(Internal)
6
Loader 1 Loader 2
1
Liquid Line
Service Valve
Relief
Valve
(w/o SSV Option)
Relief Valve (SSV Option)
Discharge
Service
Valve
Muffler
Oil Level Switch &
Oil Level Indicating
Sightglasses
Muffler
2
Motor Cooling
Solenoid Valve
10
—
—
8
9
— Device Connection
— Fusible Plug
— High Flow Schrader Valve
— Backseating Service Valve
with Refrigerant Port
Sightglass
Dry Eye
EXV
LEGEND
Electronic Expansion Valve
Suction Service Valve
Suction Pressure Transducer
Discharge Pressure Transducer
Economizer Pressure
Transducer
Oil Pressure Transducer
High Pressure Switch
Discharge Gas Thermistor
Entering Chilled Water
Thermistor
Leaving Chilled Water
Thermistor
Entering Condenser
Water Thermistor (Option)
Leaving Condenser
Water Thermistor (Option)
— Refrigerant Access Fitting
—
—
—
—
—
4
5
6
7
10
—
—
—
—
—
EXV
SSV
1
2
3
APPENDIX F (cont)
106
Sightglass
Dry Eye
EXV
7
Motor Cooling
Solenoid Valve
Service Valve
(SSV Option)
Flow Switch
Economizer
Economizer
TXV
Liquid Line
Service Valve
Liquid Line Solenoid
Valve (Brine Option)
9
Discharge
Service
Valve
Relief
Valve
5
3
4
1
Oil
Pump
Discharge
Service
Valve
Strainer/
Filter Drier
4
1
5
6
Relief Valve
Oil Filter
(Internal)
3
Loader 2 Loader 1
(w/o SSV Option)
Relief Valve (SSV Option)
Relief
Valve
2
Suction Service Valve (Option)
Check
Valve
Oil Level Switch &
Oil Level Indicating
Sightglasses
Oil Filter
(External)
Minimum Load
Control Valve
(Option)
Check
Valve
Minimum Load Control
Solenoid (Option)
Service Valve
(SSV Option)
— Device Connection
— Fusible Plug
— High Flow Schrader Valve
— Backseating Service Valve
with Refrigerant Port
— Refrigerant Access Fitting
EXV
Sightglass
Dry Eye
Economizer
TXV
Economizer
8
Liquid Line
Service Valve
Liquid Line Solenoid
Valve (Brine Option)
Typical System Components, 30HXC161-186, With Economizer
Suction Service Valve (Option)
Relief Valve
Oil Filter
(Internal)
6
Loader 1 Loader 2
Oil
Pump
Oil Filter
(External)
Oil Level Switch &
Oil Level Indicating
Sightglasses
(w/o SSV Option)
Relief Valve (SSV Option)
Strainer/
Filter Drier
Muffler
2
Motor Cooling
Solenoid Valve
10
Muffler
LEGEND
EXV — Electronic Expansion Valve
SSV — Suction Service Valve
TXV — Thermostatic Expansion
Valve
1
— Suction Pressure
Transducer
2
— Discharge Pressure
Transducer
3
— Economizer Pressure
Transducer
4
— Oil Pressure Transducer
5
— High Pressure Switch
6
— Discharge Gas Thermistor
7
— Entering Chilled Water
Thermistor
8
— Leaving Chilled Water
Thermistor
9
— Entering Condenser
Water Thermistor (Option)
10
— Leaving Condenser
Water Thermistor (Option)
APPENDIX F (cont)
107
Sightglass
Dry Eye
EXV
7
Relief
Valve
Discharge
Service
Valve
2
Oil Filter
(Internal)
5
4
5
6
Motor Cooling
Solenoid Valve
Oil Filter
Econ.
(Internal) Solenoid
Loader 2 Loader 1
(w/o SSV Option)
Relief Valve (SSV Option)
Discharge
Service
Valve
Suction Service Valve (Option)
Check
Valve
Muffler
8
— Device Connection
— Fusible Plug
— Backseating Service Valve
with Refrigerant Port
— High Flow Schrader Valve
— Refrigerant Access Fitting
LEGEND
EXV — Electronic Expansion Valve
SSV — Suction Service Valve
TXV — Thermostatic Expansion
Valve
1
— Suction Pressure Transducer
2
— Discharge Pressure Transducer
3
— Economizer Pressure Transducer
4
— Oil Pressure Transducer
5
— High Pressure Switch
6
— Discharge Gas Thermistor
7
— Entering Chilled Water
Thermistor
8
— Leaving Chilled Water
Thermistor
9
— Entering Condenser
Water Thermistor (Option)
10
— Leaving Condenser
Water Thermistor (Option)
Minimum Load
Control Valve
(Option)
Minimum Load Control
Solenoid (Option)
Typical System Components, 30HXC206-271 Circuit A, With Economizer
Suction Service Valve (Option)
1
4
Loader 1 Loader 2
Oil
Pump
OIl Filter
(External)
Oil Level Switch
Oil Level Indicating
Sightglasses
(w/o SSV Option)
Relief Valve (SSV Option)
Relief Valve
3
6
Strainer/
Filter Drier
Econ.
Solenoid
Service Valve
(SSV Option)
Flow Switch
Economizer
Economizer
TXV
Liquid Line
Service Valve
Liquid Line Solenoid
Valve (Brine Option)
Motor Cooling
Solenoid Valve
9
Muffler
10
APPENDIX F (cont)
108
7
Flow Switch
9
1
6
5
Relief Valve
Oil Filter
(Internal)
Suction Service Valve (Option)
4
3
Loader 2 Loader 1
Relief Valve (SSV Option)
(w/o SSV Option)
Discharge
Service
Valve
Strainer/
Filter Drier
Service Valve
(SSV Option)
EXV
Sightglass
Dry Eye
Economizer
TXV
Economizer
8
Liquid Line
Service Valve
Liquid Line Solenoid
Valve (Brine Option)
Typical System Components, 30HXC206-271 Circuit B, With Economizer
Minimum Load Control
Valve (Option)
Minimum Load Control
Solenoid (Option)
Oil
Pump
Check
Valve
Oil Filter
(External)
Relief
Valve
2
Muffler
Oil Level Switch &
Oil Level Indicating
Sightglasses
Motor Cooling
Solenoid Valve
10
— Device Connection
— Fusible Plug
— High Flow Schrader Valve
— Backseating Service Valve
with Refrigerant Port
— Refrigerant Access Fitting
LEGEND
EXV — Electronic Expansion Valve
SSV — Suction Service Valve
TXV — Thermostatic Expansion
Valve
1
— Suction Pressure Transducer
2
— Discharge Pressure Transducer
3
— Economizer Pressure Transducer
4
— Oil Pressure Transducer
5
— High Pressure Switch
6
— Discharge Gas Thermistor
7
— Entering Chilled Water
Thermistor
8
— Leaving Chilled Water
Thermistor
APPENDIX F (cont)
109
Sightglass
Dry Eye
EXV
7
Filter Drier
Flow Switch
Strainer
Motor Cooling
Solenoid Valve
3
4
1
Oil
Pump
Check
Valve
From Condenser
Check
Valve
(w/o SSV Option)
4
6
5
1
Relief Valve
Oil Filter
(Internal)
Suction Service Valve (Option)
Oil
Pump
Loader 2 Loader 1
3
Discharge
Service
Valve
Relief Valve (SSV Option)
Oil Filter
(External)
Oil Level
Switch
Back Pressure Valve
Relief Valve
2
Equalizer Line (Field Supplied/Connected)
To Condenser
Minimum Load
Control Valve
(Option)
Minimum Load Control
Solenoid (Option)
Sightglass
Dry Eye
EXV
— Device Connection
— Fusible Plug
— High Flow Schrader Valve
— Backseating Service Valve
with Refrigerant Port
— Refrigerant Access Fitting
LEGEND
EXV — Electronic Expansion Valve
SSV — Suction Service Valve
TXV — Thermostatic Expansion
Valve
1
— Suction Pressure Transducer
2
— Discharge Pressure Transducer
3
— Economizer Pressure
Transducer
4
— Oil Pressure Transducer
5
— High Pressure Switch
6
— Discharge Gas Thermistor
7
— Entering Water Thermistor
8
— Leaving Water Thermistor
Economizer
8
Filter Drier
Strainer
Typical System Components, 30HXA076-146, Without Economizer
Suction Service Valve (Option)
Relief Valve
Oil Filter
(Internal)
6
5
Loader 1 Loader 2
Oil Level
Switch
2
Oil Filter
(External)
Relief Valve (SSV Option)
(w/o SSV Option)
Discharge
Service
Valve
Relief Valve
Back Pressure Valve
Equalizer Line (Field Supplied/Connected)
To Condenser
Muffler
From Condenser
Motor Cooling
Solenoid Valve
Liquid Line
Service Valve
Muffler
Liquid Line
Servive Valve
APPENDIX F (cont)
110
Sightglass
Dry Eye
EXV
7
Motor Cooling
Solenoid Valve
Service Valve
(SSV Option)
Flow Switch
Economizer
Economizer
TXV
Liquid Line
Service Valve
Strainer/Filter Drier
3
4
1
Oil
Pump
Check
Valve
Oil Level
Switch
2
Minimum Load
Control Valve
(Option)
Minimum Load Control
Solenoid (Option)
Check
Valve
(w/o SSV Option)
Discharge
Service
Valve
4
6
5
1
Relief Valve
Oil Filter
(Internal)
3
Suction Service Valve (Option)
Oil
Pump
Loader 2 Loader 1
Relief Valve (SSV Option)
Oil Filter
(External)
Oil Level
Switch
Back Pressure Valve
Relief Valve
2
Service Valve
(SSV Option)
— Device Connection
— Fusible Plug
— High Flow Schrader Valve
— Backseating Service Valve
with Refrigerant Port
— Refrigerant Access Fitting
EXV
Sightglass
Dry Eye
Economizer
TXV
Economizer
8
Liquid Line
Service Valve
Strainer/
Filter Drier
From Condenser
Equalizer Line (Field Supplied/Connected)
To Condenser
Motor Cooling
Solenoid Valve
Typical System Components, 30HXA161-186, With Economizer
Suction Service Valve (Option)
Relief Valve
Oil Filter
(Internal)
6
5
Loader 1 Loader 2
Oil Filter
(External)
Relief Valve (SSV Option)
(w/o SSV Option)
Discharge
Service
Valve
Relief Valve
Back Pressure Valve
Equalizer Line (Field Supplied/Connected)
To Condenser
Muffler
From Condenser
Muffler
LEGEND
EXV — Electronic Expansion Valve
SSV — Suction Service Valve
TXV — Thermostatic Expansion
Valve
1
— Suction Pressure Transducer
2
— Discharge Pressure
Transducer
3
— Economizer Pressure
Transducer
4
— Oil Pressure Transducer
5
— High Pressure Switch
6
— Discharge Gas Thermistor
7
— Entering Water Thermistor
8
— Leaving Water Thermistor
APPENDIX F (cont)
111
Sightglass
Dry Eye
EXV
7
3
6
1
4
Oil
Pump
4
5
Oil Filter
(Internal)
Loader 2 Loader 1
(w/o SSV Option)
Relief Valve (SSV Option)
Discharge
Service
Valve
Suction Service Valve (Option)
Minimum Load
Control Valve
(Option)
Check
Valve
Oil Level
Switch
Back Pressure
Valve
Muffler
6
8
Economizer Solenoid
— Device Connection
— Fusible Plug
— High Flow Schrader Valve
— Backseating Service Valve
with Refrigerant Port
— Refrigerant Access Fitting
LEGEND
EXV — Electronic Expansion Valve
SSV — Suction Service Valve
TXV — Thermostatic Expansion
Valve
1
— Suction Pressure Transducer
2
— Discharge Pressure Transducer
3
— Economizer Pressure
Transducer
4
— Oil Pressure Transducer
5
— High Pressure Switch
6
— Discharge Gas Thermistor
7
— Entering Water Thermistor
8
— Leaving Water Thermistor
Motor Cooling
Solenoid Valve
Typical System Components, 30HXA206-271 Circuit A, With Economizer
Suction Service Valve (Option)
Relief Valve
Oil Filter
(Internal)
5
Loader 1 Loader 2
Oil Level
Switch
Oil Filter
(External)
Relief Valve 2
Relief Valve (SSV Option)
(w/o SSV Option)
Discharge
Service
Valve
Back Pressure Valve
Equalizer Line (Field Supplied/Connected)
Economizer
Solenoid
Motor
Cooling
Solenoid
Valve
Service Valve
(SSV Option)
Flow Switch
Economizer
Economizer
TXV
Liquid Line
Service Valve
Strainer/Filter Drier
Muffler
To Condenser
Minimum Load Control
Solenoid (Option)
From Condenser
APPENDIX F (cont)
112
Flow Switch
7
4
1
6
5
Relief Valve
Oil Filter
(Internal)
3
Suction Service Valve (Option)
Oil
Pump
Loader 2 Loader 1
EXV
Sightglass
Dry Eye
Economizer
TXV
Economizer
8
Liquid Line
Service Valve
Strainer/
Filter Drier
Service Valve
(SSV Option)
Motor Cooling
Solenoid Valve
Typical System Components, 30HXA206-271 Circuit B, With Economizer
Minimum Load Control
Valve (Option)
Minimum Load Control
Solenoid (Option)
Check
Valve
(w/o SSV Option)
Discharge
Service
Valve
Relief Valve (SSV Option)
Oil Filter
(External)
Oil Level
Switch
Back Pressure Valve
Relief Valve
2
Muffler
Equalizer Line (Field Supplied/Connected)
To Condenser
From Condenser
— Device Connection
— Fusible Plug
— High Flow Schrader Valve
— Backseating Service Valve
with Refrigerant Port
— Refrigerant Access Fitting
LEGEND
EXV — Electronic Expansion Valve
SSV — Suction Service Valve
TXV — Thermostatic Expansion
Valve
1
— Suction Pressure Transducer
2
— Discharge Pressure Transducer
3
— Economizer Pressure
Transducer
4
— Oil Pressure Transducer
5
— High Pressure Switch
6
— Discharge Gas Thermistor
7
— Entering Water Thermistor
8
— Leaving Water Thermistor
APPENDIX F (cont)
APPENDIX G
A_UNIT (Unit Operation): Status Display
DESCRIPTION
Control Mode
Occupied
CCN Chiller
Alarm State
Active Demand Limit
Override Modes in Effect
Percent Total Capacity
Active Setpoint
Control Point
Entering Fluid Temp
Leaving Fluid Temp
Emergency Stop
Minutes Left for Start
Heat Cool Select
STATUS
0 = Service Test
1 = Off - Local
2 = Off - CCN
3 = Off - Clock
4 = Off Emergency
5 = On - Local
6 = On - CCN
7 = On - Clock
Yes/No
Start/Stop
0 = Normal
1 = Alarm
2 = Alert
0 - 100
Yes/No
0 - 100
snnn.n
snn.n
snnn.n
snnn.n
Enable/Emstop
00:00-15:00
Heat/Cool
UNITS
POINT
STAT
%
%
°F
°F
°F
°F
min
FORCIBLE
N
OCC
CHIL_S_S
ALM
N
Y
N
DEM_LIM
MODE
CAP_T
SP
CTRL_PNT
EWT
LWT
EMSTOP
MIN_LEFT
HEATCOOL
Y
N
N
N
Y
N
N
Y
N
N
CIRCADIO (Circuit A Discrete Inputs/Outputs): Status Display
DESCRIPTION
CIRC. A DISCRETE OUTPUTS
Compressor A1 Relay
Compressor A2 Relay
Loader A1 Relay
Loader A2 Relay
Minimum Load Valve
Oil Heater
Motor Cooling A1 Solenoid
Motor Cooling A2 Solenoid
Oil Pump
Oil Solenoid A1
Oil Solenoid A2
STATUS
POINT
FORCIBLE
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
K_A1_RLY
K_A2_RLY
LOADR_A1
LOADR_A2
MLV
OILA_HTR
MTRCL_A1
MTRCL_A2
OILPMP_A
OILSL_A1
OILSL_A2
N
N
N
N
N
N
N
N
N
N
N
CIRC. A DISCRETE INPUTS
Compressor A1 Feedback
Compressor A2 Feedback
Oil Level Switch
On/Off
On/Off
Close/Open
K_A1_FBK
K_A2_FBK
OILA_SW
N
N
N
CIRCA_AN (Circuit A Analog Parameters): Status Display
DESCRIPTION
CIRCUIT A ANALOG VALUES
Percent Total Capacity
Percent Available Cap
Circuit Running Current
Discharge Pressure
Suction Pressure
Economizer Pressure
Discharge Superheat Temp
Discharge Gas Temp
Discharge Gas Temp - A1
Discharge Gas Temp - A2
Saturated Condensing Tmp
Saturated Suction Temp
EXV % Open
Variable Head Press. PCT
STATUS
UNITS
0 - 100
0 - 100
0 - 1200
nnn.n
nnn.n
nnn.n
snnn.n
nnn.n
nnn.n
nnn.n
snnn.n
snnn.n
0 - 100
0 - 100
%
%
AMPS
PSIG
PSIG
PSIG
°F
°F
°F
°F
°F
°F
%
%
CAPA_T
CAPA_A
A_CURR
DP_A
SP_A
ECNP_A
SH_A
DISTMP_A
DISTMPA1
DISTMPA2
TMP_SCTA
TMP_SSTA
EXV_A
VHPA
N
N
N
N
N
N
N
N
N
N
N
N
N
N
COMP A1 ANALOG VALUES
A1 Oil Pressure Diff.
A1 Oil Pressure
A1 Motor Temperature
Comp A1 Running Current
Comp A1 % Must Trip Amps
nnn.n
nnn.n
nnn.n
0 - 600
0 - 100
PSIG
PSIG
°F
AMPS
%
DOP_A1
OP_A1
TMTR_A1
A1_CURR
A1_MTA
N
N
N
N
N
COMP A2 ANALOG VALUES
A2 Oil Pressure Diff.
A2 Oil Pressure
A2 Motor Temperature
Comp A2 Running Current
Comp A2 % Must Trip Amps
nnn.n
nnn.n
nnn.n
0 - 600
0 - 100
PSIG
PSIG
°F
AMPS
%
DOP_A2
OP_A2
TMTR_A2
A2_CURR
A2_MTA
N
N
N
N
N
113
POINT
FORCIBLE
APPENDIX G (cont)
CIRCBDIO: (Circuit B Discrete Inputs/Outputs) Status Display
DESCRIPTION
CIRC. B DISCRETE OUTPUTS
Compressor B1 Solenoid
Compressor B2 Solenoid
Loader B1 Relay
Loader B2 Relay
Minimum Load Valve
Oil Heater
Motor Coolng B1 Solenoid
Motor Coolng B2 Solenoid
Oil Pump
Oil Solenoid B1
Oil Solenoid B2
STATUS
POINT
FORCIBLE
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
K_B1_RLY
K_B2_RLY
LOADR_B1
LOADR_B2
MLV
OILB_HTR
MTRCL_B1
MTRCL_B2
OILPMP_B
OILSL_B1
OILSL_B2
N
N
N
N
N
N
N
N
N
N
N
CIRC. B DISCRETE INPUTS
Compressor B1 Feedback
Compressor B2 Feedback
Oil Level Switch
On/Off
On/Off
Close/Open
K_B1_FBK
K_B2_FBK
OILB_SW
N
N
N
CIRCB_AN: (Circuit B Analog Parameters) Status Display
DESCRIPTION
CIRCUIT B ANALOG VALUES
Percent Total Capacity
Percent Available Cap
Circuit Running Current
Discharge Pressure
Suction Pressure
Economizer Pressure
Discharge Superheat Temp
Discharge Gas Temp
Discharge Gas Temp - B1
Discharge Gas Temp - B2
Saturated Condensing Tmp
Saturated Suction Temp
EXV % Open
Variable Head Press. PCT
STATUS
UNITS
POINT
0 - 100
0 - 100
0 - 1200
nnn.n
nnn.n
nnn.n
snnn.n
nnn.n
nnn.n
nnn.n
snnn.n
snnn.n
0 - 100
0 - 100
%
%
AMPS
PSIG
PSIG
PSIG
°F
°F
°F
°F
°F
°F
%
%
CAPB_T
CAPB_A
B_CURR
DP_B
SP_B
ECNP_B
SH_B
DISTMP_B
DISTMPB1
DISTMPB2
TMP_SCTB
TMP_SSTB
EXV_B
VHPB
N
N
N
N
N
N
N
N
N
N
N
N
N
N
COMP B1 ANALOG VALUES
B1 Oil Pressure Diff.
B1 Oil Pressure
B1 Motor Temperature
Comp B1 Running Current
Comp B1 % Must Trip Amps
nnn.n
nnn.n
nnn.n
0 - 600
0 - 100
PSIG
PSIG
°F
AMPS
%
DOP_B1
OP_B1
TMTR_B1
B1_CURR
B1_MTA
N
N
N
N
N
COMP B2 ANALOG VALUES
B2 Oil Pressure Diff.
B2 Oil Pressure
B2 Motor Temperature
Comp B2 Running Current
Comp B2 % Must Trip Amps
nnn.n
nnn.n
nnn.n
0 - 600
0 - 100
PSIG
PSIG
°F
AMPS
%
DOP_B2
OP_B2
TMTR_B2
B2_CURR
B2_MTA
N
N
N
N
N
114
FORCIBLE
APPENDIX G (cont)
OPTIONS: Status Display
DESCRIPTION
FANS
Fan 1 Relay
Fan 2 Relay
Fan 3 Relay
Fan 4 Relay
On/Off
On/Off
On/Off
On/Off
UNIT ANALOG VALUES
Cooler Entering Fluid
Cooler Leaving Fluid
Condenser Entering Fluid
Condenser Leaving Fluid
Lead/Lag Leaving Fluid
snnn.n
snnn.n
snnn.n
snnn.n
snnn.n
TEMPERATURE RESET
4 - 20 ma Reset Signal
Outdoor Air Temperature
Space Temperature
DEMAND LIMIT
4 - 20 ma Demand Signal
Demand Limit Switch 1
Demand Limit Switch 2
CCN Loadshed Signal
STATUS
UNITS
POINT
FORCIBLE
FAN_1
FAN_2
FAN_3
FAN_4
N
N
N
N
°F
°F
°F
°F
°F
COOL_EWT
COOL_LWT
COND_EWT
COND_LWT
DUAL_LWT
N
N
N
N
N
nn.n
snnn.n
snnn.n
ma
°F
°F
RST_MA
OAT
SPT
N
Y
Y
nn.n
On/Off
On/Off
0 = Normal
1 = Redline
2 = Loadshed
ma
LMT_MA
DMD_SW1
DMD_SW2
DL_STAT
N
N
N
N
PUMPS
Cooler Pump Relay
Condenser Pump Relay
On/Off
On/Off
COOL_PMP
COND_PMP
N
N
MISCELLANEOUS
Dual Setpoint Switch
Cooler Flow Switch
Condenser Flow Switch
Ice Done
Cooler Heater
4-20 ma Cooling Setpoint
4-20 ma Heating Setpoint
Liq. Line Solenoid Valve
On/Off
On/Off
On/Off
Yes/No
On/Off
nn.n
nn.n
Open/Close
DUAL_IN
COOLFLOW
CONDFLOW
ICE
COOL_HTR
CSP_IN
HSP_IN
LLSV
N
N
N
N
N
N
N
N
SIZE_DPX
CAPT_DPX
SIZEADPX
CAPA_DPX
N
N
N
N
Dual Chiller Size
Dual Chiller Pct Total Cap
Dual Chiller Tons Avail
Dual Chiller Pct Avail Cap
ma
ma
nnn
0-100
nnn
0-100
Tons
%
Tons
%
7-DAY_OCC: Occupancy Configuration
DESCRIPTION
Monday Occupied Time
Monday Unoccupied Time
Tuesday Occupied Time
Tuesday Unoccupied Time
Wednesday Occupied Time
Wednesday Unoccupied Time
Thursday Occupied Time
Thursday Unoccupied Time
Friday Occupied Time
Friday Unoccupied Time
Saturday Occupied Time
Saturday Unoccupied Time
Sunday Occupied Time
Sunday Unoccupied Time
STATUS
00:00
00:00
00:00
00:00
00:00
00:00
00:00
00:00
00:00
00:00
00:00
00:00
00:00
00:00
115
POINT
MON_OCC
MON_UNC
TUE_OCC
TUE_UNC
WED_OCC
WED_UNC
THU_OCC
THU_UNC
FRI_OCC
FRI_UNC
SAT_OCC
SAT_UNC
SUN_OCC
SUN_UNC
APPENDIX G (cont)
ALARMDEF: Alarm Configuration
DESCRIPTION
Alarm Routing Control
Equipment Priority
Comm Failure Retry Time
Re-alarm Time
Alarm System Name
STATUS
00000000
0 to 7
1 to 240
1 to 255
XXXXXXXX
DEFAULT
00000000
4
10
30
CHILLER
UNITS
min
min
POINT
ALRM_CNT
EQP_TYPE
RETRY_TM
RE-ALARM
ALRM_NAM
BRODEFS: Broadcast Configuration
DESCRIPTION
CCN Time/Date Broadcast
CCN OAT Broadcast
Global Schedule Broadcast
Broadcast Acknowledger
Daylight Savings Start:
Month
Week
Day
Minutes to Add
Daylight Savings Stop
Month
Week
Day
Minutes to Subtract
STATUS
Yes/No
Yes/No
Yes/No
Yes/No
DEFAULT
No
No
No
No
1 to 12
1 to 5
1 to 7
0 to 99
4
1
7
60
1 to 12
1 to 5
1 to 7
0 to 99
10
5
7
60
UNITS
POINT
CCNBC
OATBC
GSBC
CCNBCACK
min
STARTM
STARTW
STARTD
MINADD
min
STOPM
STOPW
STOPD
MINSUB
DISPLAY: Navigator Configuration
DESCRIPTION
Service Password
Password Enable
Metric Display
Language Selection
STATUS
nnnn
Enable/Disable
Off/On
0 = ENGLISH
1 = FRANCAIS
2 = ESPANOL
3 = PORTUGUES
DEFAULT
1111
Enable
Off
0
116
UNITS
POINT
PASSWORD
PASS_EBL
DISPUNIT
LANGUAGE
APPENDIX G (cont)
EXV_CONF: Configuration
DESCRIPTION
EXVA Stepper Type
EXVA Steps in Range
EXVA Steps Per Second
EXVA Fail Position in %
EXVA Minimum Steps
EXVA Maximum Steps
EXVA Overrun Steps
EXVB Stepper Type
EXVB Steps in Range
EXVB Steps Per Second
EXVB Fail Position in %
EXVB Minimum Steps
EXVB Maximum Steps
EXVB Overrun Steps
STATUS
0=1500 Step
1=15000 Step
Type 0=1500
Type 1=15000
Type 0=30
Type 1=300
DEFAULT
1
15000
UNITS
STEPS
300
Type 0=1500
Type 1=15000
Type 0=100
Type 1=1000
0=1500 Step
1=15000 Step
Type 0=1500
Type 1=15000
Type 0=30
Type 1=300
EXVARANG
EXVARATE
0
0
15000
%
STEPS
STEPS
EXVAPOSF
EXVAMINS
EXVAMAXS
1000
STEPS
EXVAOVRS
1
15000
EXVBTYPE
STEPS
300
Type 0=1500
Type 1=15000
Type 0=100
Type 1=1000
POINT
EXVATYPE
EXVBRANG
EXVBRATE
0
0
15000
%
STEPS
STEPS
EXVBPOSF
EXVBMINS
EXVBMAXS
1000
STEPS
EXVBOVRS
OCCPC01S: Occupancy Configuration
DESCRIPTION
Timed Override Hours
Period 1 DOW (MTWTFSSH)
Occupied from
Occupied to
Period 2 DOW (MTWTFSSH)
Occupied from
Occupied to
Period 3 DOW (MTWTFSSH)
Occupied from
Occupied to
Period 4 DOW (MTWTFSSH)
Occupied from
Occupied to
Period 5 DOW (MTWTFSSH)
Occupied from
Occupied to
Period 6 DOW (MTWTFSSH)
Occupied from
Occupied to
Period 7 DOW (MTWTFSSH)
Occupied from
Occupied to
Period 8 DOW (MTWTFSSH)
Occupied from
Occupied to
STATUS
0
00000000
00:00
00:00
00000000
00:00
00:00
00000000
00:00
00:00
00000000
00:00
00:00
00000000
00:00
00:00
00000000
00:00
00:00
00000000
00:00
00:00
00000000
00:00
00:00
117
UNITS
hours
POINT
OVR-EXT
DOW1
OCCTOD1
UNOCTOD1
DOW2
OCCTOD2
UNOCTOD2
DOW3
OCCTOD3
UNOCTOD3
DOW4
OCCTOD4
UNOCTOD4
DOW5
OCCTOD5
UNOCTOD5
DOW6
OCCTOD6
UNOCTOD6
DOW7
OCCTOD7
UNOCTOD7
DOW8
OCCTOD8
UNOCTOD8
APPENDIX G (cont)
OPTIONS1: Options Configuration
DESCRIPTION
Cooler Fluid
Min. Load Valve Select
Head Press. Control Type
Var Head Pressure Select
Pressure Transducers
Cooler Pump Control
Condenser Pump Interlock
Condenser Pump Control
Condenser Fluid Sensors
EMM Module Installed
STATUS
1 = Water
2 = Med. Brine
3 = Low Brine
No/Yes
0 = None
1 = Air Cooled
2 = Water Cooled
3 = Common Condenser
4 = Independent Condenser
0 = None
1 = 4-20 mA
2 = 0-20 mA
3 = 20-0 mA
No/Yes
Off/On
Off/On
0 = Not Controlled
1 = On when STATE is On
2 = On when compressors are On
No/Yes
No/Yes
DEFAULT
1
POINT
FLUIDTYP
No
0
MLV_FLG
HEAD_TYP
0
VHPTYPE
Yes
Off
Off
0
PRESS_TY
CPC
CND_LOCK
CNPC
No
No
CD_TEMP
EMM_BRD
OPTIONS2: Options Configuration
DESCRIPTION
Control Method
Loading Sequence Select
Lead/Lag Sequence Select
Compressor Sequence
Cooling Setpoint Select
Heating Setpoint Select
Ramp Load Select
Heat Cool Select
High LCW Alert Limit
Minutes off time
Deadband Multiplier
Close Control Select
Ice Mode Enable
Current Unbalance SetPnt
Enable Noflow Detection
Winterize Alert Config
Alarm Relay Usage
STATUS
0 = Switch
1 = 7 day sched.
2 = Occupancy
3 = CCN
1 = Equal loading
2 = Staged loading
1 = Automatic
2 = Circuit A leads
3 = Circuit B leads
1 = Automatic
2 = Compressor 1 Leads
3 = Compressor 2 Leads
0 = Single
1 = Dual, remote switch controlled
2 = Dual, 7 day clock controlled
3 = Dual, CCN occupancy controlled
4 = 4-20 mA input
0 = Single
1 = Dual, remote switch controlled
2 = Dual, 7 day clock controlled
3 = Dual, CCN occupancy controlled
4 = 4-20 mA input
Enable/Disable
Cool
2 to 60
0 to 15
1.0 to 4.0
Disable/Enable
Disable/Enable
10 to 25
Disable/Enable
Disable/Enable
0 = Alerts and Alarms
1 = Alarms Only
2 = Off
118
DEFAULT
0
UNITS
POINT
CONTROL
1
SEQ_TYPE
1
LEAD_TYP
1
COMP_SEQ
0
CLSP_TYP
0
HTSP_TYP
Enable
Cool
60.0
0
2.0
Disable
Disable
10
Enable
Enable
0
RAMP_EBL
HEATCOOL
LCW_LMT
DELAY
Z_GAIN
CLS_CTRL
ICE_CNFG
CUR_TRIP
NOFLOWEN
WINTMSC
ALRMCNFG
F
min
%
APPENDIX G (cont)
RESETCON: Options Configuration
DESCRIPTION
COOLING RESET
Cooling Reset Type
STATUS
4-20 MA RESET
4-20 — Degrees Reset
REMOTE RESET
Remote — No Reset Temp
Remote — Full Reset Temp
Remote — Degrees Reset
RETURN TEMPERATURE RESET
Return — No Reset Temp
Return — Full Reset Temp
Return — Degrees Reset
HEATING RESET
Heating Reset Type
4-20 MA RESET
4-20 — Degrees Reset
REMOTE RESET
Remote — No Reset Temp
Remote — Full Reset Temp
Remote — Degrees Reset
RETURN TEMPERATURE RESET
Return — No Reset Temp
Return — Full Reset Temp
Return — Degrees Reset
DEMAND LIMIT
Demand Limit Select
Demand Limit at 20 mA
Loadshed Group Number
Loadshed Demand Delta
Maximum Loadshed Time
Demand Limit Switch 1
Demand Limit Switch 2
LEAD/LAG
Lead/Lag Chiller Enable
Master/Slave Select
Slave Address
Lead/Lag Balance Select
UNITS
POINT
0 = No Reset
1 = 4 to 20 mA Input
2 = External Temp — OAT
3 = Return Fluid
4 = External Temp — SPT
0
–30 to +30
0
^F
C420_DEG
0 to 125
0 to 125
–30 to +30
125
0
0
dF
dF
^F
CREM_NO
CREM_FUL
CREM_DEG
0 to 30
0 to 10
–30 to +30
10
0
0
^F
^F
^F
CRTN_NO
CRTN_FUL
CRTN_DEG
CRST_TYP
0 = No Reset
1 = 4 to 20 mA Input
2 = External Temp — OAT
3 = Return Fluid
4 = External Temp — SPT
0
–30 to +30
0
^F
H420_DEG
0 to 125
0 to 125
–30 to +30
50
80
0
dF
dF
^F
HREM_NO
HREM_FUL
HREM_DEG
0 to 10
0 to 30
–30 to +30
10
0
0
^F
^F
^F
HRTN_NO
HRTN_FUL
HRTN_DEG
0 = None
1 = External Switch Input
2 = 4 to 20 mA Input
3 = Loadshed
0 to 100
0 to 99
0 to 60
0 to 120
0 to 100
0 to 100
Disable/Enable
Slave/Master
0 to 239
0 = Master Leads
1 = Slave Leads
2 = Automatic
40 to 400
0 to 30
Yes/No
Lead/Lag Balance Delta
Lag Start Delay
Parallel Configuration
DEFAULT
HRST_TYP
0
100
0
0
60
80
50
DMD_CTRL
%
%
min
%
%
Disable
Master
2
0
168
5
No
DMT20MA
SHED_NUM
SHED_DEL
SHED_TIM
DLSWSP1
DLSWSP2
LL_ENA
MS_SEL
SLV_ADDR
LL_BAL
hours
min
LL_BAL_D
LL_DELAY
PARALLEL
SCHEDOVR: Schedule and Timed Override Configuration
DESCRIPTION
Schedule Number
Override Time Limit
Timed Override Hours
Timed Override
STATUS
0 - 99
0-4
0-4
Yes/No
DEFAULT
0
0
0
No
119
UNITS
hours
hours
POINT
SCHEDNUM
OTL
OVR_EXT
TIMEOVER
APPENDIX G (cont)
SETPOINT: Configuration
DESCRIPTION
COOLING
Cool Setpoint 1
Cool Setpoint 2
Ice Setpoint
STATUS
–20 to 70
–20 to 70
–20 to 32
44.0
44.0
32.0
°F
°F
°F
CSP1
CSP2
CSP3
HEATING
Heat Setpoint 1
Heat Setpoint 2
80 to 140
80 to 140
100.0
100.0
°F
°F
HSP1
HSP2
RAMP LOADING
Cooling Ramp Loading
Heating Ramp Loading
0.2 to 2.0
0.2 to 2.0
1.0
1.0
HEAD PRESSURE
Head Pressure Setpoint A
Head Pressure Setpoint B
80 to 140
80 to 140
113
113
°F
°F
HSP_A
HSP_B
0.1 to 20.0
3.0
°F
APRCH_SP
Approach Setpoint
DEFAULT
UNITS
POINT
CRAMP
HRAMP
UNIT: Base Unit Configuration
DESCRIPTION
Unit Type
Unit Size
Circuit A % Capacity
Number Circ A Compressor
Number Circ B Compressor
Discharge Super. Setpoint
EXV Circ. A Min Position
EXV Circ. B Min Position
Fan Staging Select
Compr. A1 Must Trip Amps
Compr. A2 Must Trip Amps
Compr. B1 Must Trip Amps
Compr. B2 Must Trip Amps
STATUS
1 = Air Cooled
2 = Water Cooled
3 = Split System
4 = Heat Machine
5 = Air Cooled Heat Reclaim
76 to 350
0 to 100
1 to 2
0 to 2
10 to 40
0 to 100
0 to 100
1 to 8
10 to 560
10 to 560
10 to 560
10 to 560
Economized?
Number of Evap. Passes
Circuit with LWT Sensor
No/Yes
1 to 4
A/B
DEFAULT
1
76
50
1
1
22.0
8.0
8.0
1*
0†
0†
0†
0†
UNITS
POINT
UNIT_TYP
TONS
%
SIZE
CIRCACAP
NUMCA
NUMCB
DSH_SP
EXVAMINP
EXVBMINP
FAN_TYPE
CA1_MTA
CA2_MTA
CB1_MTA
CB2_MTA
°F
%
%
Yes
2
A
ECON_SEL
EVAPPASS
LWTCKT
*See Table 7.
†See Appendix A.
SERVICE: Configuration
DESCRIPTION
PID GAINS
Head Pressure P Gain
Head Pressure I Gain
Head Pressure D Gain
Water Valve Minimum Pos.
STATUS
–20.0 to +20.0
–20.0 to +20.0
–20.0 to +20.0
0 to 100
MISCELLANEOUS
Motor Temp Setpoint
Brine Freeze Point
DEFAULT
UNITS
POINT
1.0
0.1
0.0
20
%
HD_PGAIN
HD_IGAIN
HD_DGAIN
HD_MIN
120.0 to 240.0
–20.0 to 34.0
200.0
34.0
°F
°F
MTR_T_SP
BRN_FRZ
Max. Cond. Temp Setpoint
EXVA Start Position
EXVB Start Position
100 to Default
0 to 40
0 to 40
*
20
20
°F
%
%
MCT_SP
EXVSPOSA
EXVSPOSB
COMPRESSOR ENABLE
Enable Compressor A1
Enable Compressor A2
Enable Compressor B1
Enable Compressor B2
Enable/Dsable
Enable/Dsable
Enable/Dsable
Enable/Dsable
Enable
Enable
Enable
Enable
* GXN,R, = 152 F, HXA = 145 F, HXC = 118 F
120
ENABLEA1
ENABLEA2
ENABLEB1
ENABLEB2
APPENDIX G (cont)
ALARMS: Maintenance Display
DESCRIPTION
Active Alarm #1
Active Alarm #2
Active Alarm #3
Active Alarm #4
Active Alarm #5
Active Alarm #6
Active Alarm #7
Active Alarm #8
Active Alarm #9
Active Alarm #10
Active Alarm #11
Active Alarm #12
Active Alarm #13
Active Alarm #14
Active Alarm #15
Active Alarm #16
Active Alarm #17
Active Alarm #18
Active Alarm #19
Active Alarm #20
Active Alarm #21
Active Alarm #22
Active Alarm #23
Active Alarm #24
Active Alarm #25
STATUS
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
Axxx or Txxx
POINT
ALARM01C
ALARM02C
ALARM03C
ALARM04C
ALARM05C
ALARM06C
ALARM07C
ALARM08C
ALARM09C
ALARM10C
ALARM11C
ALARM12C
ALARM13C
ALARM14C
ALARM15C
ALARM16C
ALARM17C
ALARM18C
ALARM19C
ALARM20C
ALARM21C
ALARM22C
ALARM23C
ALARM24C
ALARM25C
CURRMODS: Maintenance Display
DESCRIPTION
CSM controlling Chiller
WSM controlling Chiller
Master/Slave control
Low Source Protection
Ramp Load Limited
Timed Override in effect
Low Cooler Suction TempA
Low Cooler Suction TempB
Slow Change Override
Minimum OFF time active
Low Discharge Superheat A
Low Discharge Superheat B
Dual Setpoint
Temperature Reset
Demand Limit in effect
Cooler Freeze Prevention
Lo Tmp Cool/Hi Tmp Heat
Hi Tmp Cool/Lo Tmp Heat
Making ICE
Storing ICE
High SCT Circuit A
High SCT Circuit B
High Motor Current Cir. A
High Motor Current Cir. B
CKT A Off Ref Flow Delay
CKT B Off Ref Flow Delay
Circuit A — Pumping out
Circuit B — Pumpout out
Unit Off: No Water Flow
STATUS
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
121
POINT
MODE_1
MODE_2
MODE_3
MODE_4
MODE_5
MODE_6
MODE_7
MODE_8
MODE_9
MODE_10
MODE_11
MODE_12
MODE_13
MODE_14
MODE_15
MODE_16
MODE_17
MODE_18
MODE_19
MODE_20
MODE_21
MODE_22
MODE_23
MODE_24
MODE_25
MODE_26
MODE_27
MODE_28
MODE_29
APPENDIX G (cont)
DUALCHIL: Maintenance Display
DESCRIPTION
Dual Chiller Link Good?
Master Chiller Role
Slave Chiller Role
Lead Chiller Ctrl Point
Lag Chiller Ctrl Point
Control Point
Cool Entering Fluid-Slave
Cool Leaving Fluid-Slave
Cooler Entering Fluid
Cooler Leaving Fluid
Lead/Lag Leaving Fluid
Percent Avail.Capacity
Percent Avail.Cap.Slave
Lag Start Delay Time
Load/Unload Factor
Load/Unload Factor-Slave
Lead SMZ Clear Commanded
Lag- SMZ Clear Commanded
Lag Commanded Off?
Dual Chill Lead CapLimit
Dual Chill Lag CapLimit
STATUS
Yes/No
STAND ALONE, Lead Chiller, Lag Chiller
STAND ALONE, Lead Chiller, Lag Chiller
snnn.n
snnn.n
snnn.n
snnn.n
snnn.n
snnn.n
snnn.n
snnn.n
0-100
0-100
hh:mm
snnn.n
snnn.n
Yes/No
Yes/No
Yes/No
0-100
0-100
UNITS
dF
dF
dF
dF
dF
dF
dF
dF
%
%
%
%
POINT
DC_LINK
MC_ROLE
SC_ROLE
LEAD_CP
LAG_CP
CTRL_PNT
COOLEWTS
COOLLWTS
COOL_EWT
COOL_LWT
DUAL_LWT
CAP_A
CAP_A_S
LAGDELAY
SMZ
SMZSLAVE
LEADSMZC
LAG_SMZC
LAG_OFF
DCLDCAPL
DCLGCAPL
LOADFACT: Maintenance Display
DESCRIPTION
CAPACITY CONTROL
Load/Unload Factor
Control Point
Leaving Fluid Temp
Calculated Z factor
Capacity Trans. State
STATUS
UNITS
POINT
snnn.n
snnn.n
snnn.n
n.n
n
%
°F
°F
SMZ
CTRL_PNT
LWT
Z_CALC
CAP_TRAN
MISCDATA: Maintenance Display
DESCRIPTION
MISCELLANEOUS
Options Temp 1, EXV AN2
Options Temp 2, EXV AN1
Options Temp 3, SCB AN9
Options Temp 4, SCB AN10
Options Current 1
Options Current 2
Pumpout Failure Count, A
Pumpout Failure Count, B
HXC Brine Config Lock
STATUS
UNITS
POINT
snnn.n
snnn.n
snnn.n
snnn.n
nn.n
nn.n
nnn
nnn
No/Yes
°F
°F
°F
°F
ma
ma
—
—
—
OPT_TMP1
OPT_TMP2
OPT_TMP3
OPT_TMP4
OPT_CUR1
OPT_CUR2
PFAIL_A
PFAIL_B
BRN_LOCK
OCCDEFM: Occupancy Maintenance Display
DESCRIPTION
Current Mode (1=Occup.)
Current Occup. Period #
Timed-Override in Effect
Time-Override Duration
Current Occupied Time
Current Unoccupied Time
Next Occupied Day
Next Occupied Time
Next Unoccupied Day
Next Unoccupied Time
Previous Unoccupied Day
Previous Unoccupied Time
STATUS
0,1
0-8
Yes/No
0-4 hours
hh:mm
hh:mm
hh:mm
hh:mm
hh:mm
122
POINT
MODE
PER-NO
OVERLAST
OVR_HRS
STRTTIME
ENDTIME
NXTOCDAY
NXTOCTIM
NXTUNDAY
NXTUNTIM
PRVUNDAY
PRVUNTIM
APPENDIX G (cont)
OILPRESS: Maintenance Display
DESCRIPTION
A1 Oil Pressure
A2 Oil Pressure
B1 Oil Pressure
B2 Oil Pressure
STATUS
snnn.n
snnn.n
snnn.n
snnn.n
UNITS
PSIG
PSIG
PSIG
PSIG
POINT
OP_A1
OP_A2
OP_B1
OP_B2
A1 Oil Filter Diff. Press
A2 Oil Filter Diff. Press
B1 Oil Filter Diff. Press
B2 Oil Filter Diff. Press
nnn.n
nnn.n
nnn.n
nnn.n
PSI
PSI
PSI
PSI
FLTP_A1
FLTP_A2
FLTP_B1
FLTP_B2
OIL PRESSURE SETPOINTS
Calculated Oil Press A1
Calculated Oil Press A2
Calculated Oil Press B1
Calculated Oil Press B2
nn.n
nn.n
nn.n
nn.n
PSI
PSI
PSI
PSI
OIL_SPA1
OIL_SPA2
OIL_SPB1
OIL_SPB2
MAX OPERATING PRESSURE
Calculated MOP Circuit A
Calculated MOP Circuit B
nn.n
nn.n
°F
°F
MOP_SPA
MOP_SPB
STRTABS: Maintenance Display
DESCRIPTION
Machine Operating Hours
Machine Starts
Circuit A Run Hours
Compressor A1 Run Hours
Compressor A2 Run Hours
Circuit B Run Hours
Compressor B1 Run Hours
Compressor B2 Run Hours
Circuit A Starts
Compressor A1 Starts
Compressor A2 Starts
Circuit B Starts
Compressor B1 Starts
Compressor B2 Starts
STATUS
nnnnnn
nnnnnn
nnnnnn
nnnnnn
nnnnnn
nnnnnn
nnnnnn
nnnnnn
nnnnnn
nnnnnn
nnnnnn
nnnnnn
nnnnnn
nnnnnn
UNITS
hours
POINT
ABS_HRM
hours
hours
hours
hours
hours
hours
ABS_CYM
ABS_HRA1
ABS_HRA2
ABS_HRB
ABS_HRB1
ABS_HRB2
ABS_CYA
ABS_CYA1
ABS_CYA2
ABS_CYB
ABS_CYB1
ABS_CYB2
STRTHOUR: Maintenance Display
DESCRIPTION
Machine Operating Hours
Machine Starts
STATUS
nnnnnn
nnnnnn
UNITS
hours
POINT
HR_MACH
CY_MACH
Circuit A Run Hours
Compressor A1 Run Hours
Compressor A2 Run Hours
Circuit B Run Hours
Compressor B1 Run Hours
Compressor B2 Run Hours
nnnnnn
nnnnnn
nnnnnn
nnnnnn
nnnnnn
nnnnnn
hours
hours
hours
hours
hours
hours
HR_CIRA
HR_A1
HR_A2
HR_CIRB
HR_B1
HR_B2
Circuit A Starts
Compressor A1 Starts
Compressor A2 Starts
Circuit B Starts
Compressor B1 Starts
Compressor B2 Starts
nnnnnn
nnnnnn
nnnnnn
nnnnnn
nnnnnn
nnnnnn
CY_CIRA
CY_A1
CY_A2
CY_CIRB
CY_B1
CY_B2
123
APPENDIX G (cont)
TESTMODE: Maintenance Display
DESCRIPTION
Service Test Mode
Manual Control Override
Compressor A1 Relay
Compressor A2 Relay
Compressor B1 Relay
Compressor B2 Relay
Loader A1 Relay
Loader A2 Relay
Loader B1 Relay
Loader B2 Relay
Oil Solenoid A1
Oil Solenoid A2
Oil Solenoid B1
Oil Solenoid B2
Motor Coolng A1 Solenoid
Motor Coolng A2 Solenoid
Motor Coolng B1 Solenoid
Motor Coolng B2 Solenoid
FAN 1 Relay
FAN 2 Relay
FAN 3 Relay
FAN 4 Relay
Oil Heater
Oil Heater
Oil Pump
Oil Pump
Cooler Pump Relay
Condenser Pump Relay
Minimum Load Valve
Cooler Heater
Remote Alarm Relay
EXV % OPEN
EXV % OPEN
Var Head Press %
Var Head Press %
Liq. Line Solenoid Valve
STATUS
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
0-100
0-100
0-100
0-100
Open/Close
UNITS
%
%
%
%
POINT
MAN_CTRL
FAC_CTRL
S_A1_RLY
S_A2_RLY
S_B1_RLY
S_B2_RLY
S_LDR_A1
S_LDR_A2
S_LDR_B1
S_LDR_B2
S_OSL_A1
S_OSL_A2
S_OSL_B1
S_OSL_B2
S_MCS_A1
S_MCS_A2
S_MCS_B1
S_MCS_B2
S_FAN_1
S_FAN_2
S_FAN_3
S_FAN_4
S_OHTR_A
S_OHTR_B
S_OPMP_A
S_OPMP_B
S_CL_PMP
S_CN_PMP
S_MLV
S_CHTR
S_ALRM
S_EXV_A
S_EXV_B
S_VHPA
S_VHPB
S_LLSV
VERSIONS: Maintenance Display
DESCRIPTION
MBB
EXV
EMM
SCB
TI CCP 1
TI CCP 2
NAVIGATOR
VERSION
CESR131344CESR131172CESR131174CESR131226100233-1R3100233-1R3CESR130227-
124
STATUS
nn-nn
nn-nn
nn-nn
nn-nn
nn-nn
nn-nn
nn-nn
APPENDIX G (cont)
WINTLOG: Maintenance Display
DESCRIPTION
Winterization Performed
Date Winterized
Date Winterized
Date Winterized
Date Winterized
Date Winterized
Date Winterize Alerted
Date Winterize Alerted
Date Winterize Alerted
Date Winterize Alerted
Date Winterize Alerted
Date Winter Configured
Date Winter Unconfigured
Date Winter Configured
Date Winter Unconfigured
Date Winter Configured
Date Winter Unconfigured
STATUS
No
00/00/00 00:00
00/00/00 00:00
00/00/00 00:00
00/00/00 00:00
00/00/00 00:00
00/00/00 00:00
00/00/00 00:00
00/00/00 00:00
00/00/00 00:00
00/00/00 00:00
00/00/00 00:00
00/00/00 00:00
00/00/00 00:00
00/00/00 00:00
00/00/00 00:00
00/00/00 00:00
POINT
WINTDONE
WMSG00
WMSG01
WMSG02
WMSG03
WMSG04
WALRT00
WALRT01
WALRT02
WALRT03
WALRT04
WCONF00
WUCONF00
WCONF01
WUCONF01
WCONF02
WUCONF02
WSMDEFME: WSM Maintenance Display
DESCRIPTION
WSM Active?
Chilled water temp
Equipment status
Commanded state
CHW setpoint reset value
Current CHW setpoint
STATUS
Yes/No
snn.n °F
On/Off
Enable/Disable/None
nn.n
^F
snn.n °F
125
POINT
WSMSTAT
CHWTEMP
CHLRST
CHLRENA
CHWRVAL
CHWSTPT
APPENDIX H
30GXN,R Duplex Combinations
SIZE
283
303
328
353
370
373
390
393
415
418
450
453
475
478
500
503
525
528
MODULE A
153
163
178
178
225
253
264
253
264
268
225
228
249
253
249
253
264
268
126
MODULE B
138
138
153
178
150
138
135
153
160
153
225
228
225
228
249
253
264
268
APPENDIX I: MOTORMASTER® V OPERATION INSTRUCTION
Motormaster V (MMV) is a Variable Frequency Drive (VFD)
that varies the condenser fan speed. The speed varies in proportion to a 4 to 20 mA signal produced by the ComfortLink™
controls. The MMV output speed is displayed in Hz.
NOTE: If the display flashes “Er”, the password was incorrect, and the process to enter the password must be repeated.
Press Mode to display present parameter setting.
Upper right decimal point blinks.
Configuration:
Use
The MMV is configured for 1 of 12 operation modes based on
the inputs to the control terminal block. 30GXN,R units use
operating modes 5-8. In these configurations, the MMV
follows a 4 to 20 mA speed reference signal present on
terminals 25 (+) and 2 (–). One additional jumper is required to
configure the drive for 50/60 Hz operation and input voltage.
See Table 1 below for proper inputs. Once the drive is
powered, it will change to the mode selected according to the
inputs. No additional programming is required.
and
to scroll to the desired parameter number.
Use the
and
buttons to scroll to the desired parameter
number.
Once the desired parameter number is found, press the Mode
button to display the present parameter setting. The upper
right-hand decimal point will begin blinking, indicating that
the present parameter setting is being displayed, and that it can
be changed by using the up and down buttons.
Use
Drive Programming:
and
to change setting.
Press Mode to store new setting.
Pressing the Mode will store the new setting and also exit the
PROGRAM mode. To change another parameter, press the
Mode key again to re-enter the PROGRAM mode (the parameter menu will be accessed at the parameter that was last
viewed or changed before exiting). If the Mode key is pressed
within two minutes of exiting the PROGRAM mode, the
password is not required access the parameters. After two
minutes, the password must be entered in order to access the
parameters again.
To change password: first enter the current password then
change parameter P44 to the desired password.
To reset factory defaults: change P48 to one of the 4 operating modes (5-8) and then cycle power.
Table 2 shows all program parameters for each of the 4 operating modes.
EPM chip:
This drive uses a removable EPM chip to store program
parameters. It should not be removed with power applied to the
VFD.
It is strongly recommended that the user NOT change any
programming without consulting Carrier service personnel.
Unit damage may occur from improper programming.
To enter password and change program values:
Press Mode.
Upper right decimal point blinks.
Display reads “00”.
To enter the PROGRAM mode to access the parameters, press
the Mode button. This will activate the PASSWORD prompt
(if the password has not been disabled). The display will read
“00” and the upper right-hand decimal point will be blinking.
Use the
and
buttons to scroll to the password value
(the factory default password is “111”) and press the Mode
button. Once the correct password value is entered, the display
will read “P01,” which indicates that the PROGRAM mode
has been accessed at the beginning of the parameter menu (P01
is the first parameter).
Table 1: Configuration Tables
NOMINAL
VOLTAGE
208/230/460/575*
208/380
230
380/415
MODE
Hz
5
6
7
8
60
60
50
50
CONTROL INPUT
(pins 25, 2)
External control 4-20 mA
External control 4-20 mA
External control 4-20 mA
External control 4-20 mA
*208 v can run in mode 5 or 6.
127
START
CONTACTS
TB1-TB2
TB13A-TB2
TB13B-TB2
TB13C-TB2
APPENDIX I (cont)
Table 2: Program Parameters for the 4 Operating Modes:
PARAMETER
NUMBER
P01
P02
P03
P04
P05
P06
P08
P09
P10
P11
P12
P13
P14
P15
P16
P17
P19
P20
P21
P22
P23
P24
P25
P26
P27
P28
P29
P30
P31
P32
P33
P34
P35
P36
P37
P38
P39
P40
P41
P42
P43
P44
P45
P46
P47
P48
P61
P62
P63
P64
P65
P66
P67
P68
DESCRIPTION
Line Voltage: 01 = low line, 02 = high line
Carrier Freq: 01 = 4 kHz, 02 = 6 kHz, 03 = 8 kHz
Startup mode: flying restart
Stop mode: coast to stop
Standard Speed source: 04 = 4-20 ma, 05 = R22, 06 = R134a
TB-14 output: 01 = none
TB-30 output: 01 = none
TB-31 output: 01 = none
TB-13A function sel: 01 = none
TB-13B function sel: 01 = none
TB-13C function sel: 01 = none
TB-15 output: 01 = none
Control: 01 = Terminal strip
Serial link: 02 = enabled 9600,8,N,2 w/timer
Units editing: 02 = whole units
Rotation: 01 = forward only, 03 = reverse only
Acceleration time: 10 sec
Deceleration time: 10 sec
Dc brake time: 0
DC BRAKE VOLTAGE 0%
Min freq = 8 hz 100 – 160 rpm
Max freq
Current limit:
Motor overload: 100
Base freq: 60 or 50 Hz
Fixed boost: 0.5 % at low frequencies
Accel boost: 0%
Slip compensation: 0%
Preset spd #1: 0
Preset spd #2: 0
Preset spd #3: 0
Preset spd 4 default - R22 setpoint, TB12-2 open
Preset spd 5 default - R134a setpoint, TB12-2 closed
Preset spd 6 default
Preset spd 7 default
Skip bandwidth
Speed scaling
Frequency scaling 50 or 60 Hz
Load scaling: default (not used so NA)
Accel/decel #2: default (not used so NA)
Serial address
Password:111
Speed at min signal: 8 Hz used when PID disabled and 4-20ma input
Speed at max feedback: 60 or 50 Hz. Used when PID disabled and 4-20ma input
Clear history? 01 = maintain, (set to 00 to clear)
Program selection: Mode 1 - 12
PI Mode: 05 = reverse, 0-5V, 01 = no PID
Min feedback = 0 (0V *10)
Max feedback = 50 (5V * 10)
Proportional gain = 4%
Integral gain = .2
PI accel/decel (setpoint change filter) = 5
Min alarm
Max alarm
OPERATING MODES
Group 5 Group 6 Group 7 Group 8
01
02
01
02
01
01
01
01
06
06
06
06
01
01
01
01
04
04
04
04
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
02
02
02
02
02
02
02
02
01
01
01
01
10
10
10
10
10
10
10
10
0
0
0
0
0
0
0
0
8
8
8
8
60
60
50
50
125
125
110
110
100
100
100
100
60
60
50
50
0.5
0.5
0.5
0.5
0
0
0
0
0
0
0
0
57
57
47
47
0
0
0
0
0
0
0
0
18.0
18.0
18.0
18.0
12.6
12.6
12.6
12.6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
60
60
50
50
200
200
200
200
60
60
60
60
1
1
1
1
111
111
111
111
8
8
8
8
60
60
50
50
01
01
01
01
05
06
07
08
01
01
01
01
0
0
0
0
50
50
50
50
4
4
4
4
.2
.2
.2
.2
5
5
5
5
0
0
0
0
0
0
0
0
2. P56 in Motormaster V shows 4-20 mA input in percent of
maximum input.
Due to the variable definitions of each controller, Table 3
shows a cross-reference:
Troubleshooting:
Troubleshooting the Motormaster® V control requires a
combination of observing system operation and VFD display
information. The MMV should follow the 4-20 mA signal
from the ComfortLink™ controls.
The speed command from the ComfortLink controls can be
monitored in 2 ways:
1. Variables VH.PA, VH.PB in the “outputs” submenu of
ComfortLink control — given as a percentage of 4 to
20 mA range.
Table 3: Controller Cross-Reference
128
CONTROL
SIGNAL
VH.PA, VH.PB
(ComfortLink)
4 ma
12 ma
20 ma
0%
50%
100%
4-20mA Input
(P56,
Motormaster V)
20%
60%
100%
VFD Speed
(P71,
Motormaster V)
8Hz
26Hz
60Hz
The MMV also provides real time monitoring of key inputs
and outputs. The collective group is displayed through
para-meters 50-56 and all values are read only.
• P50 FAULT HISTORY — Last 8 faults
• P51: SOFTWARE version
• P52: DC BUS VOLTAGE — in percent of nominal.
Usually rated input voltage x 1.4.
• P53: MOTOR VOLTAGE — in percent of rated output
voltage
• P54: LOAD — in percent of drives rated output current
rating
• P55: VDC INPUT — in percent of maximum input: 50
will indicate full scale which is 5 v
• P56: 4-20 mA INPUT — in percent of maximum input:
20% = 4 mA, 100% = 20 mA
FAULT LOCKOUT (LC), which requires a manual reset. See
Tables 4 and 5.
To disable external control mode (5-8) and enter manual
speed control mode:
Change P05 to ‘01-key pad’
Push
and
arrow key to set manual speed.
To provide manual start/stop control:
Remove start command jumper and install a switch between
the appropriate start terminals.
Loss of CCN communications:
CCN communications with external control systems can be
affected by high frequency electrical noise generated by
Motormaster V control. Ensure unit is well grounded to eliminate ground currents along communication lines.
If communications are lost only while Motormaster V control is
in operation, order a signal isolator/repeater (CEAS420876-2)
and power supplies (CEAS221045-01, 2 required) for the CCN
communication line.
Fault codes:
The drive is programmed to automatically restart after a fault
and will attempt to restart three times after a fault (the drive
will not restart after CF, cF, GF, F1, F2-F9, or Fo faults). If all
three restart attempts are unsuccessful, the drive will trip into
Table 4: Fault Codes
FAULT CODE
cF
DESCRIPTION
High Temperature Fault: Ambient temperature is too high;
Cooling fan has failed (if equipped).
Control Fault: A blank EPM, or an EPM with
corrupted data has been installed.
Incompatibility Fault: An EPM with an incompatible
parameter version has been installed.
GF
Data Fault: User data and OEM defaults in the
EPM are corrupted.
AF
CF
High DC Bus Voltage Fault: Line voltage is too high;
Deceleration rate is too fast; Overhauling load.
Serial Fault: The watchdog timer has timed out,
indicating that the serial link has been lost.
HF
JF
LF
Low DC Bus Voltage Fault: Line voltage is too low.
Output Transistor Fault: Phase to phase or phase to ground
short circuit on the output; Failed output transistor; Boost
settings are too high; Acceleration rate is too fast.
Current Overload Fault: VFD is undersized for the application; Mechanical problem with the driven equipment.
OF
PF
SF
F1
F2-F9, Fo
Drive display = ‘---’
even though drive
should be running
Drive display = 8.0 Hz
even though fan should
be running faster
VFD flashes 57
(or 47) and LCS
VFD flashes
“LCS and - - -”
LC
Single-phase Fault: Single-phase input power
has been applied to a three-phase drive.
EPM Fault: The EPM is missing or damaged.
Internal Faults: The control board has sensed a
problem.
Start contact is not closed.
SOLUTION
Check cooling fan operation
Perform a factory reset using Parameter 48 — PROGRAM SELECTION.
See Programming Notes (Step 6).
Either remove the EPM or perform a factory reset
(Parameter 48) to change the parameter version of the
EPM to match the parameter version of the drive.
Restore factory defaults by toggling P48 to another mode.
Then set P48 to desired mode to restore all defaults for that mode.
See configuration section (Step 2). If that does not work, replace EPM.
Check line voltage — set P01 appropriately
Check serial connection (computer)
Check settings for P15
Check settings in communication software to match P15
Check line voltage — set P01 appropriately
Reduce boost or increase acceleration values.
If unsuccessful, replace drive.
Check line voltage — set P01 appropriately
Check for dirty coils
Check for motor bearing failure
Check input power phasing
Consult factory.
Check auxiliary contact for proper operation and configuration. See configuration section (Step 5).
Control signal is at 4 mA
Saturated condensing temperature is below setpoint
in ComfortLink controls.
Speed signal lost. Drive will operate at 57 (or 47) Hz
until reset or loss of start command. Resetting
requires cycling start command (or power).
Start contact is not closed.
In stand-alone mode: In external control mode (30GXN,R)
check wiring from unit controls J8 for 4-20 mA signal.
Drive runs at 57 Hz in modes 5,6 and 47 Hz in modes 7,8.
Check auxiliary contact for proper operation and configuration. See configuration section (Step 5).
View PSD: Fault History to determine.
Fault lockout — 3 or more unsuccessful starts
Table 5: Status Indication
FAULT CODE
CL
FAULT NAME
CURRENT LIMIT
Er
ERROR
GE
GE
LC
SP
FAULT LOCKOUT
START PENDING
DESCRIPTION
The output has exceeded the CURRENT LIMIT setting (Parameter 25) and the drive
is reducing the output frequency to reduce the output current. If the drive remains in
CURRENT LIMIT for too long, it can trip into a CURRENT OVERLOAD fault (PF).
Invalid data has been entered.
“GE” will be displayed if an attempt is made to change the OEM default settings
when the drive is operating in the OEM mode (see Parameter 48).
Failed three restart attempts. Requires a manual reset.
This is displayed during the first 15 second interval between restart attempts.
129
B
A
B
A
B
A
B
A
B
A
B
A
B
A
Circuit
%
Capacity
Per
Circuit
Suction
Pressure
Sat.
Suct.
Temp
EXV
Pos
COOLER
Econ.
Press.
Refrigerant
In
Out
Pressure
Out
Temp.
In
Water
Discharge
Pressure
Sat.
Cond.
Temp
Refrigerant
In
Out
Pressure
In
Out
Temp.
Water Cooled
CONDENSER
CHILLER MODEL NO. __________________________
Outside
Air Temp
Air
Cooled
Temp.
Motor
________________________________________________________________________________________________________________________________________________________________________
________________________________________________________________________________________________________________________________________________________________________
________________________________________________________________________________________________________________________________________________________________________
________________________________________________________________________________________________________________________________________________________________________
B2
B1
A2
A1
B2
B1
A2
A1
B2
B1
A2
A1
B2
B1
A2
A1
B2
B1
A2
A1
B2
B1
A2
A1
B2
B1
A2
A1
Oil
Discharge
Oil
No.
Gas
Oil
Pressure Pressure
Temp.
Diff.
COMPRESSOR
CHILLER SERIAL NO. __________________________
REMARKS: Indicate start counts, operating hours, shutdowns on safety controls, repairs made, oil or refrigerant added or removed (include amounts).
Date/
Time
Operator
Initials
PLANT _____________________
30 Series Screw Liquid Chiller Maintenance Data Log
APPENDIX J
Copyright 2004 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 903
Catalog No. 533-00052
Printed in U.S.A.
Form 30G,H-9T
Pg 130
612 1-04
Replaces: New
Book 2
Tab 5c
CUT ALONG DOTTED LINE
CUT ALONG DOTTED LINE
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
START-UP CHECKLIST FOR 30GX,HX LIQUID CHILLER
I. Project Information
Job Name _______________________________________________________________________
Address ________________________________________________________________________
City ______________________________________________State __________ Zip __________
Installing Contractor _______________________________________________________________
Sales Office _____________________________________________________________________
Start-up Performed By _____________________________________________________________
Design Information
Capacity
EWT
LWT
Fluid Type
Flow Rate
P.D.
Ambient
Cooler
Condenser
Equipment
Model ____________________________________
Serial ________________________________
Compressors
A1) Model _________________________________
Serial ________________________________
A2) Model _________________________________
Serial ________________________________
B1) Model _________________________________
Serial ________________________________
B2) Model _________________________________
Serial ________________________________
Condenser (30HXA only)
Circuit A
Circuit B
Model ____________________________________
Model _______________________________
Serial ____________________________________
Serial ________________________________
Model ____________________________________
Model _______________________________
Serial ____________________________________
Serial ________________________________
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 903
Catalog No. 533-00052
Printed in U.S.A.
Form 30G,H-9T
Pg CL-1
612 1-04
Replaces: New
Book 2
Tab 5c
II. Preliminary Equipment Check (to be completed by installing contractor)
 Yes
Is there any physical damage?
 No
Description _________________________________________________________________________
__________________________________________________________________________________
1. Unit is installed level as per the installation instructions.
 Yes
 No
2. Power supply agrees with the unit nameplate.
 Yes
 No
3. Correct control voltage ________vac.
 Yes
 No
4. Electrical power wiring is installed properly. (Branch circuit fused
or HACR breaker)
 Yes
 No
5. Unit is properly grounded.
 Yes
 No
6. Electrical circuit protection has been sized and installed properly.
 Yes
 No
7. All terminals are tight.
 Yes
 No
8. All plug assemblies are tight.
 Yes
 No
9. All cables and thermistors have been inspected for crossed wires.
 Yes
 No
10. All thermistors are fully inserted into wells.
 Yes
 No
11. Mechanical room maintained above 50 F (10 C) (30HX only).
 Yes
 No
12. Relief valve vent piping installed per local codes.
 Yes
 No
13. Wind baffles installed (30GX, 09DX).
 Yes
NOTE: Required for unit operation where winds of 5 mph (2.2 m/s) or
greater are anticipated at outdoor ambient temperatures below 32 F (0° C).
 No
Chilled Water System Check
1. All chilled water valves are open.
 Yes
 No
2. All piping is connected properly.
 Yes
 No
3. All air has been purged from the system.
 Yes
 No
4. Chilled water pump is operating with the correct rotation.
 Yes
 No
5. Chilled water pump starter interlocked with chiller.
 Yes
 No
6. Inlet piping to cooler includes a 20 mesh strainer.
 Yes
 No
7. Water loop volume greater than 3 gal/ton for air conditioning
or 6 gal/ton for process cooling and low ambient operation.
 Yes
 No
8. Proper loop freeze protection provided to ____ F (C).
 Yes
 No
Antifreeze type__________________ Concentration _________%.
(If antifreeze solution is not utilized on 30GX machines and the minimum
outdoor ambient is below 32 F (0° C) then items 9-12 have to be
completed to provide cooler freeze protection to 0° F. Refer to Installation
Instructions for proper cooler winterization procedure.)
 Yes
 No
10. Cooler heaters installed and operational (30GX Only).
 Yes
 No
11. Cooler heads and tube sheets are insulated.
 Yes
 No
12. Chilled water pump controlled by chiller.
(Chilled water pump will start automatically to circulate water through
cooler during potential freezing conditions.)
 Yes
 No
9. Outdoor piping wrapped with electric heater tape.
CL-2
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-----------------------------------------------------------------------------------------------------------------------------------------------------------------
Condenser Water System Check (30HXC Only)
1. All condenser water valves are open.
 Yes
 No
2. All piping is connected properly.
 Yes
 No
3. All air has been purged from the system.
 Yes
 No
4. Condenser water pump is operating with the correct rotation.
 Yes
 No
5. Condenser water pump controlled by chiller.
 Yes
 No
6. Inlet piping to condenser includes a 20 mesh strainer.
 Yes
 No
7. Condenser water flow switch installed. (Required for 30HXC Brine.)
 Yes
 No
8. Condenser water flow switch configured and operational.
 Yes
 No
9. Condenser water control valve installed.
(Separate control power required.)
 Yes
 No
1. All refrigerant piping is connected properly.
 Yes
 No
2. Equalizer line is installed from motor cooling line to back-pressure valve.
 Yes
 No
3. Liquid line filter driers installed.
 Yes
 No
4. Liquid line solenoid valves installed.
 Yes
 No
5. R-134a fan cycling pressure switches installed (09DK).
 Yes
 No
6. Refrigerant piping and condenser have been leak checked and evacuated.
 Yes
 No
1. All liquid line valves are open.
 Yes
 No
2. All discharge valves are open.
 Yes
 No
3. All suction service valves are open (if equipped).
 Yes
 No
4. All oil line valves are open.
 Yes
 No
5. Chilled water flow switch is operational.
 Yes
 No
6. Leak check unit. Locate, repair and report any refrigerant leaks.
 Yes
 No
7. Voltage is within unit nameplate range.
 Yes
 No
 Yes
 No
Remote Condenser System Check (30HXA Only)
III. Unit Start-Up
8. Check voltage imbalance:
A-B________ A-C________B-C________
Average voltage = ____________ (A-B + A-C + B-C)/3
Maximum deviation from average voltage = _________
Voltage imbalance = ________% (max. deviation/average voltage) x 100
Voltage imbalance less than 2%.
(DO NOT start chiller if voltage imbalance is greater than 2%.
Contact local Utility for assistance.)
9. Verify cooler flow rate (maximum and minimum)
 Yes
 No
Pressure entering cooler
_______ psig (kpa)
Pressure leaving cooler
_______ psig (kpa)
Cooler pressure drop
_______ psig (kpa)
Psig x 2.31 ft/psi =
_______ ft of water
Kpa x 0.334 m/psi =
_______ m of water
Maximum cooler flow rate
_____ gpm (l/s) (See Cooler Pressure Drop Curve)
Minimum cooler flow rate
_____ gpm (l/s) (See Cooler Pressure Drop Curve)
CL-3
III. Unit Start-Up (cont)
9. Verify condenser flow rate.
Pressure entering condenser
Pressure leaving condenser
Condenser pressure drop
Psig x 2.31 ft/psi =
Kpa x 0.334 m/psi =
Condenser flow rate
_______
_______
_______
_______
_______
_______
 Yes
 No
psig (kpa)
psig (kpa)
psig (kpa)
ft of water
m of water
gpm (l/s) (See Condenser Pressure Drop Curve)
Start and operate machine. Complete the following:
1. Complete component test.
 Yes
 No
2. Check refrigerant and oil charge. Record charge information.
 Yes
 No
3. Record compressor motor current.
 Yes
 No
4. Record two sets of operational log readings.
 Yes
 No
5. Provide operating instructions to owner’s personnel.
Instruction time _______ hrs.
Refrigerant Charge
Additional charge required
Circuit A__________
__________
Circuit B___________
___________
Oil Charge
Additional charge required
__________
___________
Comments:
______________________________________________________________________________________________________
______________________________________________________________________________________________________
______________________________________________________________________________________________________
______________________________________________________________________________________________________
______________________________________________________________________________________________________
______________________________________________________________________________________________________
______________________________________________________________________________________________________
______________________________________________________________________________________________________
______________________________________________________________________________________________________
Signatures:
Start-up Technician__________________________ Customer Representative __________________________
Date____________
Date____________
CL-4
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Record Software Versions
MODE — RUN STATUS
SUB-MODE
VERS
(Press
ENTER
ITEM
ITEM
EXPANSION
CESR131344-__ __-__ __
CESR131172-__ __-__ __
CESR131174-__ __-__ __
100233-1R3-__ __-__ __
100233-1R3-__ __-__ __
CESR131226-__ __-__ __
CESR131227-__ __-__ __
DISPLAY
MBB
EXV
EMM
CP1
CP2
SCB
NAVI
and
ESCAPE
simultaneously to obtain software versions)
Record Configuration Information
MODE — CONFIGURATION
SUB-MODE
DISP
UNIT
OPT1
ITEM
TEST
METR
LANG
PAS.E
PASS
TYPE
TONS
CAP.A
CMP.A
CMP.B
DIS.S
FAN.S
CM.A1
CM.A2
CM.B1
CM.B2
FLUD
MLVS
HPCT
VHPT
PRTS
CPC
CNP.I
CNPC
CWT.S
EMM
DISPLAY
ON/OFF
ON/OFF
x
ENBL/DSBL
xxxx
x
xxx
xxx%
x
x
xx.x
x
xxx AMPS
xxx AMPS
xxx AMPS
xxx AMPS
x
YES/NO
x
x
YES/NO
ON/OFF
ON/OFF
x
YES/NO
YES/NO
ITEM EXPANSION
TEST DISPLAY LED’S
METRIC DISPLAY
LANGUAGE SELECTION
PASSWORD ENABLE
SERVICE PASSWORD
UNIT TYPE
UNIT SIZE
CIRCUIT A% CAPACITY
NUMBER CIRC A COMPRESSOR
NUMBER CIRC B COMPRESSOR
DISCHARGE SUPER SETPOINT
FAN STAGING SELECT
COMPR. A1 MUST TRIP AMPS
COMPR. A2 MUST TRIP AMPS
COMPR. B1 MUST TRIP AMPS
COMPR. B2 MUST TRIP AMPS
COOLER FLUID
MIN LOAD VALVE SELECT
HEAD PRESSURE CONTROL TYPE
VAR HEAD PRESSURE SELECT
PRESSURE TRANSDUCERS
COOLER PUMP CONTROL
CONDENSER PUMP INTERLOCK
CONDENSER PUMP CONTROL
CONDENSER FLUID SENSORS
EMM MODULE INSTALLED
CL-5
ENTRY
Record Configuration Information (cont)
MODE — CONFIGURATION (cont)
SUB-MODE
OPT2
RSET
SLCT
ITEM
CTRL
CCNA
CCNB
BAUD
LOAD
LLCS
CP.SQ
LCWT
DELY
CLS.C
ICE.M
C.UNB
NO.FL
W.MSG
ALR.C
CRST
CRT1
CRT2
DGRC
HRST
HRT1
HRT2
DGRH
DMDC
DM20
SHNM
SHDL
SHTM
DLS1
DLS2
LLEN
MSSL
SLVA
LLBL
LLBD
LLDY
PARA
CLSP
HTSP
RL.S
CRMP
HRMP
HCSW
Z.GN
BRN.L
DISPLAY
x
xxx
xxx
x
x
x
x
xx.x
xx
ENBL/DSBL
ENBL/DSBL
xx%
ENBL/DSBL
ENBL/DSBL
x
x
xxx.x
xxx.x
xx.x
x
xxx.x
xxx.x
xx.x
x
xxx%
xxx
xxx%
xxx
xxx%
xxx%
ENBL/DSBL
SLVE/MAST
xxx
x
xxx
xxx
YES/NO
x
x
ENBL/DSBL
x.x
x.x
COOL/HEAT
x.x
YES/NO
ITEM EXPANSION
CONTROL METHOD
CCN ADDRESS
CCN BUS NUMBER
CCN BAUD RATE
LOADING SEQUENCE SELECT
LEAD/LAG SEQUENCE SELECT
COMPRESSOR SEQUENCE
HIGH LCW ALERT LIMIT
MINUTES OFF TIME
CLOSE CONTROL SELECT
ICE MODE ENABLE
CURRENT UNBALANCE SETPOINT
NO REFRIGERANT FLOW ALRM ENABLE
WINTERIZE ALERT CONFIG
ALARM RELAY USAGE
COOLING RESET TYPE
NO COOL RESET TEMP
FULL COOL RESET TEMP
DEGREES COOL RESET
HEATING RESET TYPE
NO HEAT RESET TEMP
FULL HEAT RESET TEMP
DEGREES HEAT RESET
DEMAND LIMIT SELECT
DEMAND LIMIT AT 20 MA
LOADSHED GROUP NUMBER
LOADSHED DEMAND DELTA
MAXIMUM LOADSHED TIME
DEMAND LIMIT SWITCH 1
DEMAND LIMIT SWITCH 2
LEAD/LAG CHILLER ENABLE
MASTER/SLAVE SELECT
SLAVE ADDRESS
LEAD/LAG BALANCE SELECT
LEAD/LAG BALANCE DELTA
LAG START DELAY
PARALLEL CONFIGURATION
COOLING SETPOINT SELECT
HEATING SETPOINT SELECT
RAMP LOAD SELECT
COOLING RAMP LOADING
HEATING RAMP LOADING
HEAT COOL SELECT
DEADBAND MULTIPLIER
HXC BRINE CONFIG LOCK
CL-6
ENTRY
CUT ALONG DOTTED LINE
CUT ALONG DOTTED LINE
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
Record Configuration Information
MODE — CONFIGURATION (cont)
SUB-MODE
SERV
BCST
ITEM
H.PGN
H.IGN
H.DGN
H.MIN
MT.SP
BR.FZ
MC.SP
EX.S.A
EX.S.B
EN.A1
EN.A2
EN.B1
EN.B2
W.DNE
ECON
EVPS
LWTC
AP.SP
TD.B.C
OAT.B
GS.B.C
BC.AK
DISPLAY
xx.x
xx.x
xx.x
xxx.x
xxx.x
xxx.x
xxx.x
xx.x
xx.x
ENBL/DSBL
ENBL/DSBL
ENBL/DSBL
ENBL/DSBL
YES/NO
YES/NO
x
A/B
xxx.x
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ITEM EXPANSION
HEAD PRESSURE P GAIN
HEAD PRESSURE I GAIN
HEAD PRESSURE D GAIN
WATER VALVE MINIMUM POS
MOTOR TEMP SETPOINT
BRINE FREEZE POINT
MAX. COND. TEMP SETPOINT
EXVA START POSITION
EXVB START POSITION
ENABLE COMPRESSOR A1
ENABLE COMPRESSOR A2
ENABLE COMPRESSOR B1
ENABLE COMPRESSOR B2
WINTERIZATION PERFORMED
ECONOMIZED
NUMBER OF EVAP. PASSES
CIRCUIT WITH LWT SENSOR
APPROACH SETPOINT
CCN TIME/DATE BROADCAST
CCN OAT BROADCAST
GLOBAL SCHEDULE BROADCAST
BROADCAST ACKNOWLEDGER
ENTRY
MODE — SETPOINT
SUB-MODE
COOL
HEAT
HEAD
ITEM
CSP.1
CSP.2
CSP.3
HSP.1
HSP.2
HD.P.A
HD.P.B
DISPLAY
xxx.x
xxx.x
xxx.x
xxx.x
xxx.x
xxx.x
xxx.x
ITEM EXPANSION
COOLING SETPOINT 1
COOLING SETPOINT 2
ICE SETPOINT
HEATING SETPOINT 1
HEATING SETPOINT 2
HEAD PRESSURE SETPOINT A
HEAD PRESSURE SETPOINT B
CL-7
ENTRY
Component Test — Complete the following tests to make sure all peripheral components
are operational before the compressors are started.
MODE – SERVICE TEST
To Enable Service Test Mode, move Enable/Off/Remote Contact
Switch to OFF. Configure TEST to ON. Move Switch to ENABLE.
SUB-MODE
TEST
OUTS
COMP
ITEM
EXV.A
VH.PA
OL.P.A
MC.A1
MC.A2
OS.A1
OS.A2
EXV.B
VH.PB
OL.P.B
MC.B1
MC.B2
OS.B1
OS.B2
FAN1
FAN2
FAN3
FAN4
CLR.P
CLR.H
CND.P
RMT.A
CC.A1
CC.A2
LD.A1
LD.A2
MLV
OL.H.A
CC.B1
CC.B2
LD.B1
LD.B2
OL.H.B
DISPLAY
ON/OFF
xxx %
xxx %
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
xxx %
xxx %
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ITEM EXPANSION
SERVICE TEST MODE
EXV % OPEN
VAR HEAD PRESS %
OIL PUMP
MOTOR COOLING SOLENOID A1
MOTOR COOLING SOLENOID A2
OIL SOLENOID A1
OIL SOLENOID A2
EXV % OPEN
VAR HEAD PRESS %
OIL PUMP
MOTOR COOLING SOLENOID B1
MOTOR COOLING SOLENOID B2
OIL SOLENOID B1
OIL SOLENOID B2
FAN 1 RELAY
FAN 2 RELAY
FAN 3 RELAY
FAN 4 RELAY
COOLER PUMP RELAY
COOLER HEATER
CONDENSER PUMP RELAY
REMOTE ALARM RELAY
COMPRESSOR A1 RELAY
COMPRESSOR A2 RELAY
LOADER A1 RELAY
LOADER A2 RELAY
MINIMUM LOAD VALVE
OIL HEATER
COMPRESSOR B1 RELAY
COMPRESSOR B2 RELAY
LOADER B1 RELAY
LOADER B2 RELAY
OIL HEATER
CL-8
ENTRY
COMPLETE
CUT ALONG DOTTED LINE
CUT ALONG DOTTED LINE
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
ALL UNITS:
Record the following information from the Pressures and Temperatures Modes when machine is in a stable operation
condition.
COOLER ENTERING FLUID
COOLER LEAVING FLUID
OUTSIDE AIR TEMPERATURE
SPACE TEMPERATURE
CONDENSER ENTERING FLUID
CONDENSER LEAVING FLUID
LEAD/LAG LEAVING FLUID
____________________
____________________
____________________
____________________
____________________
____________________
____________________
SATURATED CONDENSING TEMP
SATURATED SUCTION TEMP
DISCHARGE SUPERHEAT TEMP (Comp 1/Comp 2)
MOTOR TEMPERATURE (Comp 1/Comp 2)
DISCHARGE PRESSURE
SUCTION PRESSURE
ECONOMIZER PRESSURE
OIL PRESSURE (Comp 1/Comp 2)
OIL PRESSURE DIFF. (Comp 1/Comp 2)
OIL FILTER DIFF. (Comp 1/Comp 2)
CALCULATED OIL PRESS (Comp 1/Comp 2)
CIRCUIT A
_____________________
_____________________
_____________________
_____________________
_____________________
_____________________
_____________________
_____________________
_____________________
_____________________
_____________________
Compressor Running Current — All readings taken at full load.
Compressor A1
Compressor A2
Compressor B1
Compressor B2
L1
_____
_____
_____
_____
L2
_____
_____
_____
_____
L3
_____
_____
_____
_____
L2
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
L3
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
Condenser Fan Motor Current
Fan Motor 1
Fan Motor 2
Fan Motor 3
Fan Motor 4
Fan Motor 5
Fan Motor 6
Fan Motor 7
Fan Motor 8
Fan Motor 9
Fan Motor 10
Fan Motor 11
Fan Motor 12
Fan Motor 13
Fan Motor 14
Fan Motor 15
Fan Motor 16
L1
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
_____
CL-9
CIRCUIT B
____________________
____________________
____________________
____________________
____________________
____________________
____________________
____________________
____________________
____________________
____________________
Copyright 2004 Carrier Corporation
Book
Tab
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
2
PC 903
Catalog No. 533-00052
Printed in U.S.A.
Form 30G,H-9T
Pg CL-10
612
1-04
Replaces: New
5c
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