advertisement
G
Y
040-420
Contrc
with h
_.- - v----w
I
CONTENTS
P a g e
GENERAL . . . . . . , . . . . , . , . . . , . , . . . . , . , . . . . . . . . 2
MAJOR SYSTEM COMPONENTS . . . . . . . . . . . . 2-4
Processor Module . . . . . . . . . . . . . . . . . . . . . . . . ...2
Low-Voltage Relay Module . , . . . . . . , . , . , , . . . . . 2
Electronic Expansion Valve Module . . . . . . . . . . . 2
Options Module . . . . . . . . . . . . . . . . *. . . . . . . . . . . . 2
Keypad and Display Module
(Also Called HSIO or LID) . . . . . . . . . . . . . . . . . . 2
Page
Restart Procedure . . . . . . . . . . . . . . . . . . . . . . . ...48
l
POWER FAILURE EXTERNAL TO THE UNIT
Alarm Codes . . . . . . , . . . . . . . , . . . . . . . . . . , . . . . . 49
+. . . . . . . . . . . . 50
Electronic Expansion Valve . . . . . . . . . . . . . . . . , . 56
l
EXV OPERATION l
CHECKOUT PROCEDURE
Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...60
a LOCATION l
THERMISTOR REPLACEMENT (Tl, T2, T7, T8)
(Compressor and Cooler)
Electronic Expansion Valve (EXV) . . . , . . . . . . . . 4
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4
Compressor Protection Control
Module (CPCS) . . , . . . . . . . . . . . . . . . . . . . . . . . . . 4
Capacity Control . . . . , , . . . . . . . . . . . . . . . . . . +
Head Pressure Control . . 1
Pumpout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...27
Keypad and Display Module
(Also Called HSIO or LID)
ACCESSING FUNCTIONS AND :tiBFtiN?TI’dNS
28
SUMMARY DISPLAY
KEYPAD OPERATING INSTRUCTIONS
STATUS FUNCTION
TEST FUNCTION
HISTORY FUNCTION
SET POINT FUNCTION
SERVICE FUNCTION
SCHEDULE FUNCTION l
TROUBLESHOOTING l
TRANSDUCER REPLACEMENT
Control Modules . . . . . . . . . . . . . . . . . . . . . . . , . . . . 64
l
PROCESSOR MODULE (PSIO), 4IN/40UT
MODULE (SIO), LOW-VOLTAGE RELAY
MODULE (DSIO), AND EXV DRIVER MODULE
(DSIO)
. RED LED l l
GREEN LED
PROCESSOR MODULE (PSIO) l LOW-VOLTAGE RELAY MODULE (DSIO)
. 4IN/40UT MODULE (SIO)
ACCESSORY UNLOADER INSTALLATION
Installation . . . . . . . , . . . s
l
040-110, 130 (60 Hz) UNITS
(and associated modular units) l
130 (50 Hz), 150-210, 225, 250, and 280 UNITS
(and associated modular units)
68-7 1
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . .
48-67
Checking Display Codes . . . . . . . . . . . . . . . . . . . . .
48
Unit Shutoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
48
Complete Unit Stoppage . . . . . . . . . . . . . . . . . . . .
48
Single Circuit Stoppage . . . . . . . . . . . . . . . . . . . . .
48
Lag Compressor Stoppage . . . . . . . . . . . . . . . . . .
48
FIELD WIRING . . . . . . . . . . . . , . . . . . . . . . . . . . . . 71-73
REPLACING DEFECTIVE PROCESSOR
MODULE (PSIO)
. . . . +
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...73
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.
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
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.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2
P C 9 0 3
Catalog No. 563-015 Printed in U S A.
Form 30GN-2T pg 1
1 - 9 4 Replaces: 30GB,GT-1
30GN-1T
T ,
-%a-
GENERAL
IMPORTANT: This publication contains controls, operation and troubleshooting data for 3OGNO40-420 and
30GT225, 250, and 280 FlotronicTM II chillers,
Circuits are identified as circuits A and B, and compressors are identified as Al, A2, etc. in circuit A, and BI, B2, etc. in circuit B.
Use this guide in conjunction with separate Installation Instructions booklet packaged with the unit,
The 30G Series standard Flotronic II chillers feature microprocessor-based electronic controls and an electronic expansion valve (EXV) in each refrigeration circuit.
NOTE: The 30GN040 and 045 chillers with a factoryinstalled brine option have thermal expansion valves (TXV) instead of the EXV.
Unit sizes 240,270, and 300-420 are modular units which are shipped as separate sections (modules A and B). Installation instructions specific to these units are shipped inside the individual modules. See Table 1 for a listing of unit sizes and modular combinations. For modules 24OB and 270B, follow all general instructions as noted for unit sizes OSO-
110. For all remaining modules, follow instructions for unit sizes 130-210.
Table 1 - Unit Sizes and Modular Combinations
UNIT MODEL
30G NO40
3OG NO45
30GN050
30EN060
30GN070
30GN080
NoT”o’NNs”L SE\WlK&N
6 0
70
8 0
40
4 5
50
-
-
-
-
ssE%~N
-
-
-
-
30GNlfO
30GN190
30GN210 1
30GT225
30GN240
30GT250
30GN270
30GT280
30GN330
30GN360
30GN390
30GN420
1
1 285
3 2 5
3 5 0
3 8 0
400
160
180
200 I
2 2 5
2 2 5
2 5 0
260
2 8 0
-
-
-
-
30GN130
-
1
30QN170
-
I
-
-
-
30GNlOO
-
30GNi 00
I
1 30GNi 3 0 1
30GNl70
3 0 G N f 70
30GN170
30GN190 3 0 G N f 90/30GN170*
30GN210
30GN210
30GN190
30GN210
*60 Hz units/50 Hz units.
The Flotronic II control
system
cycles compressor unloaders and/or compressors to maintain the selected leaving water temperature set point. It automatically positions the
EXV to maintain the specified refrigerant superheat entering the compressor cylinders. It also cycles condenser fans on and off to maintain suitable head pressure for each circuit. Safeties are continuously monitored to prevent the unit from operating under unsafe conditions. A scheduling function, programmed by the user, controls the unit occupied/ unoccupied schedule. The control also operates a test program that allows the operator to check output signals and ensure components are operable.
2
The contrwsm consists of a processor module (PSIO)9 a low-voltage relay module (DSIO-LV),
2
EXVs, an EXV driver module (DSIO-EXV), a 6-pack relay board, a keypad and display module (also called HSIO or LID), thermistors, and transducers to provide inputs to the microprocessor. An options module (SIO) is used to provide additional functions. This module is standard on 30GN modules and is a field-installed accessory on the 30GT Flotronic II units. See Fig. 1.
MAJOR SYSTEM COMPONENTS
Processor Module -
This module contains the operating software and controls the operation of the machine. It continuously monitors information received from the various transducers and thermistors and communicates with the relay modules and &pack relay board to increase or decrease the active stages of capacity. The processor module also controls the EXV driver module, commanding it to open or close each EXV in order to maintain the proper superheat entering the cylinders of each lead compressor. Information is transmitted between the processor module and relay module, the EXV driver module, and the keypad and display module through a 3-wire communications bus. When used, the options module is also connected to the communications bus.
For the Flotronic II chillers, the processor monitors system pressure by means of 6 transducers, 3 in each lead compressor. Compressor suction pressure, discharge pressure, and oil pressure are sensed. If the processor senses high discharge pressure or low suction pressure, it immediately shuts down all compressors in the affected circuit. During operation, if low oil pressure is sensed for longer than one minute, all compressors in the affected circuit are shut down.
At start-up, the coil pressure signal is ignored for 2 minutes. If shutdown occurs due to any of these pressure faults, the circuit is locked out and the appropriate fault code is displayed.
Low-Voltage Relay Module
- This module closes contacts to energize compressor unloaders and/or compressors. It also senses the status of the safeties for all compressors and transmits this information to the processor.
Electronic Expansion Valve Module
- This module receives signals from the processor and operates the electronic expansion valves.
Options Module -
This module allows the use of Flotronic II features such as dual set point, remote reset, demand limit, hot gas bypass, and accessory unloaders. The options module also aIlows for reset and demand limit to be activated from a remote 4-20 mA signal. The options module is installed at the factory on 040-210 and modular 240-
420 units. It is a field-installed accessory for 225, 250 and
280 units.
Keypad and Display Module (also called HSlO or LID) -
This device consists of a keypad with 6 function keys, 5 operative keys, 12 numeric keys, and an alphanumeric g-character LCD. Key usage is explained in
Accessing Functions and Subfunctions section on page 28.
Control Switch -
Control of the chiller is defined by the position of the LOCAL/ENABLE-STOP-CCN switch.
This is a 3-position manual switch that allows the chiller to be put under the control of its own Flotronic II controls, manually stopped, or put under the control of a Carrier Corn:f
,, fort Network (CCN), Switch allows unit operation as shown in Table 2.
c ’ _. ’
ELECTRONIC EXPANSION VALVES
DRIVER MODULE
(DSIO EXV)
L O W - V O L T A G E
R E L A Y M O D U L E
(DsroiLv)
T B - 7
I d g-PACK
RELAY BOARD
B
;rt’EFUCER
SOURCE (PSI)
\- -.-...-
GROUND FAULT INTERRUPTER
KEYPAD;DISPLAY
M O D U L E (HSIO/LID)
208/230-, 460-f%!-3-60-V O N L Y
LEGEND
CCN - cZarrier Comfort Network
TB
-1 “ e r m i n a l B l o c k
Fig. 1 - 30GN Control Panel (040-110, 240B, 270B Unit Shown)
C O O L E R I iEA1
RELAY, B
‘ E R
, T B - 3
FIELD
ZEol
CONNECl rlON
In the LOCAL/ENABLE position, the chiller is under local control and responds to the scheduling configuration and set point data input at its own local interface device (keypad and display module).
In the CCN position, the chiller is under remote control and responds only to CCN network commands. The occupied/ unoccupied conditions are defined by the network. All keypad and display functions can be read at the chiller regardless of position of the switch.
CCN run or
stop
condition is established by a command from the CCN network. It is not possible to force outputs from the CCN network, except that an emergency stop command shuts down the chiller immediately and causes ‘ ‘ALARM
52” to be displayed.
Table 2 - LOCAL/ENABLE-STOP-CCN
Switch Positions and Operation
S W I T C H
P O S I T I O N
STOP
LOCAL/ENABLE
CCN :t2 1
I
U N I T
OPERATION
CONFIGURATION AND
SET POINT CONTROL
Keypad Control 1 CCN Control
I Unit Cannot Run Read/Write
Unit Can Run
1 Read Only
Read/Limited Write Read Only
Unit Cannot Run Read Only
Unit Can Run R e a d O n l v
ReadlWrite
Read/Limited Write
Electronic Expansion Valve (EXV)
- The microprocessor controls the EXV through the EXV driver module. Inside the expansion valve is a linear actuator stepper motor.
The lead compressor in each circuit has a thermistor and a pressure transducer located in the suction manifold after the compressor motor. The thermistor measures the temperature of the superheated gas entering the compressor cylinders. The pressure transducer measures the refrigerant pressure in the suction manifold. The microprocessor converts the pressure reading to a saturated temperature. The difference between the temperature of the superheated gas and the saturation temperature is the superheat. The microprocessor controls the position of the electronic expansion valve stepper motor to maintain 29 F (16 C) superheat.
At initial unit 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 control monitors the superheat and the rate of change of superheat to control the position of the valve. The valve stroke is very large, which results in very accurate control of the superheat.
Sensors -
The Flotronic TM II chiller control system gathers information from sensors to control the operation of the chiller. The units use
6 standard pressure transducers and
4 standard thermistors to monitor system pressures and temperatures at various points within the chiller. Sensors are listed in Table 3.
Table 3 - Thermistor and Transducer Locations
Sensor
T:
Ti
TIO
Sensor
D P T - A
S P T - A
O P T - A
DPT-I3
S P T - B
O P T - B
THERMISTORS
Location
Cooler Leaving Water Temp
Cooler Entering Water Temp
Compressor Suction Gas Temp Circuit A
Compressor Suction Gas Temp Circuit B
Remote Temperature Sensor (Accessory)
PFIESSURETRANSDUCERS
Location
Compressor Al Discharge Pressure
Compressor Al Suction-Pressure
Compressor Al Oil Pressure
Compressor Bl Discharge Pressure
Compressor Bi Suction Pressure
Compressor Bl Oil Pressure
Compressor Protection Control Module (CPCS)
- Each compressor on models 30GN070 (50 Hz), 080-
100, and 240B, 270B, has its own CPCS as standard equipment. All 30GN040-060 and 070 (60 Hz) units feature the
CPCS as an accessory, and CR (control relay) as standard equipment. See Fig. 2. The 30GN130-2 10 and associated modular units and the 30GT225, 250, and 280 Flotronic II units have a CR as standard equipment. The CPCS or CR is used to control and protect the compressors and crankcase heaters. The CPCS provides the following functions: compressor contactor control crankcase heater control compressor ground current protection status communication to processor board high-pressure protection
The CR provides all of the same functions as the CPCS with the exception of compressor ground current protection. Ground current protection is accomplished by using a
CGF (compressor ground fault) board in conjunction with the CR. The CGF provides the same ground fault function as the CPCS for units where the CPCS is not utilized.
One large relay is located on the CPCS board. This relay
(or CR) controls the crankcase heater and compressor contactor. The CPCS also provides a set of signal contacts that the microprocessor monitors to determine the operating status of the compressor. If the processor board determines that the compressor is not operating properly through the signal contacts, it will lock the compressor off by deenergizing the proper 24-v control relay on the relay board. The
CPCS board contains logic that can detect if the current-toground of any compressor winding exceeds 2.5 amps. If this condition occurs, the CPCS module shuts down the compressor.
A high-pressure switch with a trip pressure of 426 +
7 psig (2936 +_ 48 kPa), is wired in series with the CPCS.
If this switch opens during operation, the compressor stops and the failure is detected by the processor when the signal contacts open. The compressor is locked off. If the lead compressor in either circuit is shut down by the high pressure switch or ground current protector, all compressors in the circuit are locked off.
PROTECTION BOARD
Fig. 2 - Compressor Protection Control Module
4
OPERATION DATA
Capacity Control
- The control system cycles compressor to give capacity control steps as shown in
Tables 4A-4D. The unit controls leaving chilled water temperature. Entering water temperature is used by the microprocessor in determining the optimum time to add or subtract steps of capacity, but is not a control set point.
The chilled water temperature set point can be automatically reset by the return temperature reset or space and outdoor air temperature reset features. It can also be reset from an external 4-20 mA signal with a loop isolator, or from a network signal.
The operating sequences shown are some of many possible loading sequences for the control of the leaving water temperature. If a circuit has more unloaders than another, that circuit will always be the lead circuit.
UNIT
3 0 G N
“““ft Hr) y-yy
,
040 (60 Hz)
045 (60 Hz)
AIt
040 (50 Hz)
0:; pg~l
,
040 (50 Hz) o;y;,y
,
045 (50 Hz)
050f”, Hz)
045 (50 Hz)
050 (60 Hz)
Alt,Bl**
:
:
5
045 (50 Hz)
050A\6$Hz)
045 (50 Hz)
yfyy2
I
045 (50 Hz)
:
i
7
*Unloaded compressor.
tCompressor unloader, standard.
**Compressor unloader, accessory.
ttTwo unloaders, both unloaded.
1
z
6
7
32
4
1
:
5
:
: i
: i
1
:
4
5
:
4 i
1
;
4
:
1
:
CONTROL
STEPS
Table
4A
- Capacity
Control Steps, 040-070
LOADING SEQUENCE A
%
Displacement
(AwrW
Compressors
A l *
::
1~~
2 5
APB1
Al :Bl
A l *
%
1 0 0
Al”B1
Al ,kl
A l ”
s;
1;:
2 4
Al”B1
Al ,k
Al*
::
1::
-
-
-
-
-
i:
1::
Al% *
Al ‘,Bl
Al ,Bl
-
-
-
-
-
-
A l *
Al
Al *,Bl
Al ,Bl
Al*
:A
8°F
1 0 0
;:
is;
1 0 0
1 8
Al% *
Al ‘,Bl
Al ,Bl
A2-y y&tgi
Al ,i31
A2.p
: :
5 6
2
1 0 0
-
-
-
-
-
-
Al;Bl*
Al +,Bl
Al *,Bl
Al ,Bl
-
-
-
-
-
-
-
::
1%
-
-
-
-
-
-
-
-
-
-
-
-
::
5 3 i:
1 0 0
-
-
-
-
3 8
LOADING SEQUENCE B
%
Displacement tAppro
Compressors
-
-
-
-
-
-
-
2 5
5 0
Bl*
1::
-
-
-
AIBlil *
Al’,Bl
-
-
-
-
Bl*
:;
El
1 0 0
A l & *
Al ,‘sl*
Al .Bl
El z7
6 4
1::
-
-
-
Bl”
Al% *
Al,k
Al .Bl
-
-
-
-
-
-
-
-
-
-
Al ,Bl
5
UNIT
3 0 G N
050 (50 Hz)
060G Hz)
050 (50 Hz)
“g pgy
I
050 (50 Hz)
060A\~**Hz)
050 (50 Hz)
06g$,y
I
060 (50 Hz)
070fc Hz)
060 (50 Hz)
07Odpto**Hz)
060 (50 Hz) oypg~)
,
6
1
1
1
Y
Table 4A - Capacity Control Steps, 040-070 (cant)
I
LOADING SEQUENCE A LOADING SEQUENCE B
%
Displacement tApw0
Compressors
I
I a
Compressors
.
.
1 8
?I
5 6
1:;
7 3
2 8
.
Al*
Al”B1
Al ,k
Al*
-
-
-
-
B l *
A l % *
Al’,Bl
Al ,Bl
A&t!
#$Vg,
Al ,‘sl yi!
Al&l’
Al ,‘sl*
Al ,Bl
-
-
-
-
-
-
-
-
-
-
1 5
-
-
-
-
-
A;p
Al~~Bl*
A$t!g’
Al ,‘sl
Al*
Al”Bl
Al ,i31
Al*
Al% *
Al ‘.Bl
Al @I
A:$
AV$B1
Al .Bi
-
-
-
-
-
-
-
zi
6 6
8 3
1 0 0
-
-
1 8 z:
8600
1 0 0
-
-
-
-
-
-
-
-
i
-
-
Bs’lt,t
“d,i;t)
Al’,Bi
-
-
-
-
-
Bl*
Al&’
Al .i31*
Ai,Bl
Ei:
8 3
1 0 0
*Unloaded compressor.
j-Compressor unloader, standard.
**Compressor unloader, accessory.
ttTwo unloaders, both unloaded.
. .
i
;.
UNIT
30GN
060
(50 Hz)
“‘“G Hz) oy&ya
,
070 (50
Hz)
Al t**,Bl**
*Unloaded compressor.
tCompressor unloader, standard.
**Compressor unloader,
accessory.
ttTwo unloaders, both unloaded.
Table 4A - Capacity Control Steps, 040-070 (cant)
LOADING SEQUENCE A
%
Displacement tApprod
1 6
Compressors
T
LOADING S
%
Displacement
(Approx) i!
2:
:i
1 0 0
2
6 5 i;
1 0 0
Al*
A-FBI
Al
Al ,k l
,A2,Bl
Al ,A2.B1
Al”
ii:
8 3
1 0 0
-
-
-
-
-
WENCE B
Al’,61
-
B l *
Al% l
Al fB1
Al ,Bl
Al *,A2,Bl*
Al *,A2,Bl
Al ,A2,Bl
-
-
-
-
-
Al& *
Al ,‘sl*
Al ,Bl
Al*,A2,Bl*
Al .A2.B1*
Ai’,A2’,Bl
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1 5
::
5 7 ii
-
-
-
-
-
ylf,t
Al& l
Al :Bt
Al ,A2,Bl*
Al .A2.B1
A&’
Al :Bl
Al ,A2,Bl*
Al ,A2,Bl
-
-
,
UNIT
3 0 G N
080 (60 Hz)
Aly*,Blv
08Aqy;,y
,
Table 4B - Capacity Control Steps, 080-110 and Associated Modular Units
I
LOADING SEQUENCE A
Compressors r
LOADING SEQUENCE B
%
Displacement
(4wW
Compressors
-
-
-
-
-
-
A l *
Al
Al*,Bl*
Al *,Bi
Al ,Bl
Al *,A2,Bl
Al .A2.B1
Aiti
A l ”
Al+yBl*
AA’;Jgl
Al ,Bl
Al *.A2.B1
Al ,A2,Bl
-
-
-
-
-
z!
:: iii
1 0 0
-
-
-
-
-
-
-
-
Bl*
Bi
Ai*,Bl*
Al,Bl*
Al ,Bl
Al .A2.81*
Ai,A2,Bi
-
-
-
-
y-/i+
A$-hJ
Ai,Bl
Al ,A2,61*
Al ,A2,Bl
Al t t
Ai*.
Be’lt,t
Al+yBl*
Al ++,Bl
Al *,Bl
Al ,Bl
Al *.A2.B1
Al ,k2,Bl
A l *
Al% *
Al $1
Al ,Bl
Al *,A2,Bl*
Al *,A2,Bl
Al ,A2,Bl
Al t t
A l *
-
-
A;{:;:)
Al’,Bl
Ai,A2,Bl*
Al ,A2,Bl
-
Bl*
A&*
Al,‘Bl*
Al ,Bl
Al *,A2,Bi *
Al ,A2,Bl*
, ,
-
-
Al+?Bl*
AWtSg
Al ,Bl
Al ++,A2,Bl l
A4l&pi’&
Al .A2,Bl
-
-
-
-
-
-
-
-
A;.$!
-
-
-
-
-
-
-
-
-
B1 t t
Bl*
AIB:l *
Ai,61
Al *,A2,Bl++
A;;“A’;“Wt
Ai.A;,Bl y&f
080 ( S O H z )
Aif”*,6if**
Al+?Bl*
AJ&t,$
Al ,Bl
Al ++,A2,Bl*
AAit,-bA&l
Al ,A2,Bl
*Unloaded compressor.
+Compressor unloader, standard
**Compressor unloader, accessory
++Two unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing.
AIBlk *
Ai,Bl
Al *,A2,B1++
“d;“A’;“B’lt’t
Ai,Ai,Bi
-
-
UNIT
30GN
090 (60
Hz)
Aly*,Blt
Table 4B - Capacity Control Steps, 080-110 and Associated Modular Units (cant)
CONTROL
STEPS
l-
LOADING !
%
Displacement
VNwW iQUENCE A
Compressors
Al*
:;
E
5 3
65: ii
9 1
Al% *
Al ‘,Bl
Al ,Bl
Al *,A2,Bl*
Al *,AZ,Bl
Al ,A2,Bl
Al *,A2,Bl *,B2
Al *,A2,Bl ,B2
Al ,AZ,Bl,B2
A2.p
-
-
-
-
-
-
-
-
-
A;,%&1
Al*:B 1
A;!tf2UJ$
Al*A2 bl
Al tT,A2,i31 ,B2
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
-
-
-
-
-
-
-
-
-
-
-
-
LOADING 1
%
Displacement
(Approx)
:QUENCE B
Compressors
Bl*
;; ii
2; r3:
::
1 0 0
-
-
-
-
-
-
-
-
-
-
-
Al%*
Al,Bl*
Al ,Bl
Al *,Bl l
,B2
Al ,Bl *,B2
Al,Bl,B2
Al *,A2,Bl *,B2
Al ,A2,Bi *,B2
Al .A2.B1 .B2
-
-
-
-
-
-
-
-
-
-
-
-
A;,:&>
Al’,Bl
Al ,Bl tT,B2
Al ,Bl *,B2
Al ,Bl ,B2
Al ,A2,Bl t-t,82
Al .A2.B1 *.B2
Al’,A&Bl ,B2
Bitt
BP’
090 (60
Hz)
Alt**,BlY*
Al *,A2,Bl
Al ,A2,Bl
Al tt,A2,Bl ,B2
Al*,A2,Bl ,B2
Al ,A2,Bl ,B2
A l *
Al%1 *
Al ‘,Bl
Al ,Bi
Al *,A2,Bl*
Al *,A2,Bl
Al ,A2,Bl
Al *,A2,Bl:,B2
Al *.A2.B1 .B2
Al ,k2,Bi ,B2
A;:!
Al;; Bl
Al*,Bl
Al ,Bl
Al tt,A2,81 l
Al tt,AP,Bl
Al *,A2,61
Al ,A2,Bl
Altt,A2,Bl*,B2
Al tt,A2,Bi ,B2
Al *,A2,Bl ,B2
Al .A2.61 .B2
*Unloaded compressor.
tCompressor unloader, standard.
**Compressor unloader, accessory
TtTwo unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing.
-
-
-
-
-
-
-
-
-
-
-
8 0
8 2
9 1
“d,:;tJ
Ai,Bl
AAli BB’lt,t~~2
Ai,Bl ,B2
Al ,A2,Bl TT,B2
Al .A2.Bl*.B2
Al’,Ai, Bl ,B2
Bi*
Al& *
Al ,Bl*
Al ,Bl
Al*,Bl*,B2
Al,Bl*,B2
Al ,Bl ,B2
Al*,A2,Bl *,B2
Al .A2.Bl *.B2
Al’,Ai,Bi ,B2
-
-
-
-
-
-
9
UNIT
3 0 G N
090 (50 Hz)
Alt,Bly
Table 4B - Capacity Control Steps, 080-110 and Associated Modular Units (cant)
CONTROL
STEPS r
LOADING
%
Displacement
(APPW
-
-
Compressors
-
-
-
-
-
-
T
LOADING SEQUENCE B
%
Displacement
(4wW
Compressors
7
:;’ ii
4 3
-
-
-
-
-
-
-
-
-
-
-
Pii
6 0
7”:
Ei
1 0 0
Al*,BlTT,BZ
“d;B~ltt~~2
A1’,Bl*k
Al *,A2,Bitt,Bl
Al ,A2,BlTt,Bl
A$!!
BB’.p
090 (50 Hz)
Al t**,Bl t**
Al;; Bl
Al +I
Al ,Bl
Al tt,AZBl tt
Altt,A2,Bl*
AlTT,A2,Bl
Al *,A2,Bl
Al ,A2,Bl
Al tt,A2,Bl *,B2
Al TT,A2,Bl ,B2
Al*,A2,Bl ,B2
Al .A2,Bl .B2
Al*
A;;:;H
Al’,Bl*
Al*,Bltt,B2
Al ,Bi TT,B2
Al ,Bl”,B2
Al ,Bl ,B2
Al tt,AZBl tt,B2
Al *,A2,Bl j-T,B2
Al ,A2,Bl TT,B2
Al ,A2,61*,62
Al ,A2,Bl B2
A l *
100, 2408,
Al% *
Al (61
Al ,Bl
Al *,A2,Bl*
;;*J.p;
Al *,A2,& *,B2
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
“Alt!
Al% *
Al ‘,Bl
Al ,Bl
Al *,A2,Bl*
Al *,A2,Bf
Al ,A2,Bl
Al *,A2,Bi*,B2
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
-
100,24OB,
270B (60 Hz)
Alt**,Blt
AltAt Bl
Al*,&
Al ,Bl
Al Tt,A2,Bl*
Al Tt,A2,Bl
Al *,A2,61
Al ,A2,Bt
Al tt,A2,Bl *,B2
Al Tt,A2,Bl ,B2
Al *.A2.B1 .B2
Al ,A2,i31,‘82
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
100,24OB,
270B (60 Hz)
Alt,Blt^*
i
1 0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Ai,-Bi
Al*.Bltt.B2
Al ,A2,BltT,B2
Al .A2.B1 *.B2
Al’,A$Bl ,B2
*Unloaded compressor
+Compressor unloader, standard.
**Compressor unloader, accessory.
TtTwo unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing
1 0
UNIT
3 0 G N
100, 2406,
270B (60 Hz)
Alr*,Blr
Table
40 - Capacity Control Steps, 080-I IO and Associated Modular Units (cant)
LOADING SEQUENCE A
%
Displacement
(Awr ox)
Compressors
8
Altt
A l *
r
LOADING
%
Displacement
(Apex)
8
EQUENCE B
Compressors
Bitt
Bl*
:i
1 0 0
A$;g
Al ,bl
Al tt,A2,61*
Al tt,A2,61
Al *,A2,Bl
Al ,A2,Bl
Al tt,A2,Bl *,B2
Al tt,A2,Bl ,B2
Al *,A2,Bi $32
Al .A2.B1 .B2
:A
20”
::
;“7
E-
100
Al “B: tt
Ai,Bl*
Al ,Bl
Al*,Bltt,B2
“A;“B’lt”tb;2
Al’,Bl ,b2
Al *,A2,Bl tt,B2
Al ,A2,Bi tt,B2
Al ,A2,Bl l
,BZ
Al .A2,Bl ,B2
Bl*
:;
2 6
Al*
100, 240B,
2708 (50 Hz)
A1tW-t
100, 240B,
2708 (50 Hz)
Aft**,Blt
i
E
1 4
;
9
::
1 0 0
7
A l % *
Al :Bl
A1 ,Bl
A l *,A2,Bl*
Al *,A2,Bl
Al ,A2,Bl
Al *,A2,Bl *,B2
Al*.A2.81 .B2
Al ,‘A2@1,82
Al t t
A l *
Wtf2Z$’
-
-
-
-
-
-
-
-
-
-
-
-
Al% *
Al,bl*
Al ,Bl
Ad;g *‘8822
Al’,Bl*b2
Al *,A2$1 *,B2
Al .A2.B1 l
.B2
Al’,Ai,Bl ,B2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
100, 2408,
270B (50 Hz)
Alt,Blt**
:
::
1 2
:
5
6
8’
9
::
-
-
-
-
-
-
-
-
-
-
-
-
-
Al ,kI2,i31
Altt,A2,Bl *,B2
Al tt,A2,Bl ,B2
Al *,A2,Bl ,B2
Al .A2.Bl.B2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Bitt
Bl*
Ai,F;hJ
Al’,Bl
Al*,Bl tt.132
Al ,‘Bl ff,‘B2
Al ,Bl *,B2
Al ,Bl,B2
Al*,A2,Bl tt,B2
Al ,A2,Bl tt,B2
Al .A2,Bl *.B2
Altt
A l *
:
100, 2408,
270B (50 Hz)
Alr*,Blt”*
ii i
::
E
::
1 6
;
9
A;,;h; 1
Al ,‘sl
Al tt,AZBl tt
A l tt,A2,Bl*
“A’p/pg
A1*iI2 bl
Al tt,/i2,Eil tt,B2
Altt,A2,Bl*,B2
Altt,A2,Bl ,B2
Al l
,AZ,Bl ,B2
Al ,A2,Bl ,B2
Al :li t+
Ai,Bi*
Al,Bl
Al tt,Bl tt,B2
Al *,Bl tt,B2
AAlj “B’(t;3122
Al’,Bl ,b2
Al tt,AZBl tt,B2
Al *,A2,Bl tt,B2
Al ,A2,Bl tt,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
*Unloaded compressor.
tCompressor unloader, standard
**Compressor unloader, accessory.
tfTwo unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing.
11
UNIT
30GN
110 (60 Hz)
Al t**,Bl Y
Table 48 - Capacity Control Steps, 080-110 and Associated Modular Units (cant)
LOADING SEQUENCE A
%
Displacement
(ApprW
1 4
Compressors
Al*
r
LOADING SEQUENCE B
%
Displacement
(Amrox)
Compressors
81”
;A
:: s6:
2
Al
&I *
Al ‘,Bl
Al ,Bi l
,A2,Bl*
Al *,A2,Bi
Al ,A2,Bl
Al*,A2,Bl*,B2
Al *.A2.B1 .B2
Al ,A2,Bl ,i32
A/p -
Al51 *
Al,Bl*
Al ,Bl
;;*gg
Ai’,Bl ,B2
Al*,A2,Bl*,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
-
A;;;#
Al ,Bl
Al Tt,A2,Bl*
Al t-/-,A2,Bl
Al*,A2,Bl
Al ,A2,Bi
Al Tt,A2,Bl *,B2
Al -ft,A2,Bi ,B2
Al *.A2.B1 .B2
Al ,k2,Bl ,B2
-
-
-
-
-
-
-
-
-
-
1
-
-
-
-
-
-
-
-
B1 t t
Bl*
-
-
-
-
-
-
-
-
-
-
A’tt
A l ”
-
-
-
-
-
-
-
Al !% tt
Ai ,Bi*’
Al ,Bl
Al*,BlTT,B2
“A; BB’~t;3”2’
Al’,Bl ,B2
Al *,A2,Bl tT,B2
Al ,A2,Bl tT,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2 y&v
A;;hgl A;,=.$
Al ,Bl
A’tt,AZBl t t
Al tt,A2,Bl*
$-t&Z3
Al ,A2,Bl
Al tt,A2,Bl *,B2
Al Tt,A2,Bl ,B2
Al*.A2.B1 .B2
Al ,A2,Bl ,B2
Al*
Ai,Bl
Al *,Bl tT,B2
“A; B!&lW22’
Ai,Bl ,B2
Al ttNB’ttB2
Al *,A2,Bl tt,B2
A-l ,A2,Bl tT,B2
Al .A2.B1 *.B2
Al’,Ai,Bl ,i32
Bl*
110 (50 Hz)
Alt,Blt
A l % *
Al’,Bl
Al ,Bl
Al *,A2,Bl*
Al l
,A2,Bl
Al ,A2,61
Al *,A2,Bl *,B2
Al *,A2,Bl ,B2
Al .A2Bl .B2
*Unloaded compressor.
TCompressor unloader, standard
**Compressor unloader, accessory.
TtTwo unloaders, both unloaded.
NOTE: These capacity control steps may vary due to
lag
compressor sequencing
100
Al%
Al ,Bt*
Al
Al ,Bi l
,Bl *,B2
Al ,Bl *,B2
Al ,Bl ,B2
Al *,A2,Bl *,B2
Al .A2,Bl*.B2
A;,Ai,Bl ,B2
-
12
UNIT
3 0 G N
110 (50 Hz)
Alt**,Blt
110 (50 Hz)
Alt,Blv
110 (50 Hz)
Alt**,Blt**
Table 4B - Capacity Control Steps, 080-110 and Associated Modular Units (cant)
CONTROL
STEPS
: z
::
1 2
9 i
LOADING
%
Displacement
UWrW
SEQUENCE A
Compressors
-
-
-
-
-
-
-
-
-
-
a
A2.p
*$#l
Al ,Bl
“A:tkA2’i3BI~
AleA2 Bl
Al tf,A2,Bl ,B2
Al *,A2,Bl ,B2
Al ,AZ,Bi ,B2
-
-
-
-
-
-
-
-
-
-
-
-
*;$T
A l ; ; B l
Al *,Bl
Al ,Bl
*&Wf22il”l’
Al*A2 Bl
Al tt,A2,Bi ,B2
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
T
LOADING :
%
Displacement
(Arwox)
-
-
-
-
-
-
-
-
-
-
-
a
,QUENCE B
Compressors
-
-
-
-
-
-
-
-
-
-
-
Be’lt,t
*;,F;:t
Al’,Bl
“A;W&3$
Ai,Bi ,B2
Al ,A2,Bl tt,B2
Al ,A2,Bf *,82
Al .A2,Bl ,B2
“B’p
~,;~~J
AI’,Bl
Al ,BltT,B2
Al ,Bl *,B2
Al ,Bi ,B2
Al ,A2,Bl tt,B2
Al ,A2,B1 *,B2
Al .A2.B1 .B2
*Unloaded compressor.
TCompressor unloader, standard.
**Compressor unloader,
accessory
TTTwo unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing
13
UNIT
30GN
130, 240A,
130, 240A,
130, 240A,
Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units
T-
LOADING EQUENCE A
r
LOAD11 EQUENCE B
%
Displacement
Mvrox)
Compressors
Al*
%
Displacement
VVwr ox)
Compressors
Bl*
:‘: :i
:fz
2;
;i
Ei
1 0 0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Al% *
Al ‘,Bl
Al ,Bl
Al *,A2,Bl*
Al *,A2,Bl
Al ,A2,Bl
Al *,A2,Bi *,B2
Al*,A2,Bl ,B2
Al .A2.B1 .B2
’ Al’tt ’
Al*
AlgBl’
A$t;l”i’
Al ,kH
Al tt,A2,Bi *
Al tt,A2,B1
Al *,A2,Bl
Al ,A2,Bl
Al tj-,A2,Bi*,B2
Al tt,A2,Bl ,B2
Al *.A2.B1 .B2
A? ,iI2,-Bl ;B2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
yp
z
2;
; :
-
-
-
-
-
-
-
-
K
100
-
-
-
-
-
-
-
Al&’
Al ,k*
Al
Al ,Bl l
,Bl l
,B2
Al ,Bi *,B2
Al ,Bl ,B2
Al?,A2,Bl *,B2
Al ,A2,Bf*,B2
Al ,A2,Bl ,B2
-
‘-
-
-
-
-
-
-
-
-
-
-
BJ.fJ
;-y;;;;
Ai,Bi*
Al ,Bl
Al *,Bl tt,B2
“A;B&t$&2
Al’,Bl ,k2
Al *,A2,Bl tt,B2
Al ,A2,Bl tt,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
BB’!!
Al*%++
130, 240A,
AlRBl’
AAlt,t&’
Al ,kl
Al ttA2,Bl tt
Al tt,A2,Bl*
Al tt,A2,Bi
Al *.A2.B1
Al ,iI2,‘Bi
Al ttAW1 tt,B2
Al tt,A2,Bl *,B2
Al tt,A2,Bl ,B2
Al *.A2,Bl .B2
Al ,k2&,82
A l *
130,24OA,
A&l *
Al ‘,Bl
Al ,Bl
Al *,A2,Bl l
Al *,A2,Bl
Al ,A2,Bl
Al *,A2,Bl *,B2
Al*,A2,Bl ,B2
Al ,A2,Bl ,B2
Al *,A2,A3,Bl *,B2
Al *,A2,A3,Bl ,B2
Al .A2.A3.Bi
.B2
*Unloaded compressor tCompressor unloader, standard.
**Compressor unloader, accessory ttTwo unloaders, both unloaded
NOTE: These capacity control steps may vary due to lag compressor sequencing+
Al.,Bl
Al t-t-41 tt,B2
Al *,Bl tt,B2
“A; BB’~~~~2
Altt,A2,Bltt,B2
Al
Al’,Bl ,k2 l
,A2,Bl tt,B2
Al ,A2,Bl tt,B2
Al .A2.B1 *.B2
Al’,A2’,Bl ,i32
B l *
Al& *
Al,kl*
Al ,Bl
Al *,Bl *,B2
Al ,Bl *,B2
Al ,Bl ,B2
Al*,A2,Bl *,B2
Al ,A2,Bl*,B2
Al ,A2,Bl ,B2
Al *,A2,A3,Bl *,B2
Al qA2qA3.81 *.B2
1 4
UNIT
3 0 G N
130, 24OA,
130,24OA,
Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant)
CONTROL
STEPS r
LOADING SEQUENCE A
%
Compressors
Displacement
hwrox)
6
“drt,t
-
-
-
-
-
-
-
AlPtlBl*
Al tt,Bl
Al l
,Bl
Al ,Bl
Al tt,A2,Bl*
“A’:t;P22~7El
Al*A2 Bl
Al tt,A2,Bl *,B2
Altt,A2,Bl ,B2
Al *,A2,Bi ,B2
Al ,A2,Bl ,B2
Al tt,A2,A3,Bl *,B2
Al tt,A2,A3,Bl ,B2
Al *,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
T
LOADING SEQUENCE B
%
Displacement
(Awrox)
-
-
-
-
-
-
-
-
-
-
-
Compressors
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Bitt
Bi*‘
AIB& *
Al’,Bl
Al *,Bl tt,B2
Al ,Bl tt,B2
Al ,Bl *,B2
Al ,Bl ,B2
Al ,A2,Bl tt,B2
Al ,A2,Bl*,B2
Al ,A2,Bl ,B2
Al ,A2,A3,Bl tt,B2,B3
Al ,A2,A3,Bi *,B2,B3
Al ,A2,A3,Bl ,B2,B3
A$v B;.p
130, 240A,
Al;t:Bl*
A;;Jbg’
Al ,Bl
Al tt,A2,Bl*
A;~tA$2’~1
Al*A2 Bl
Altt,;22,Bl*,B2
Al tt,A2,Bl ,B2
Al *,A2,Bi ,B2
Al ,A2,Bl ,B2
Al tt,A2,A3,Bl*,B2
Altt,A2,A3,Bi ,B2
Al*,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
A l ’
Al
Al *,Bl*
Al *,Bl
Al ,Bl
Ai*,A2,Bl*
Al l
,A2,Bl
Al ,A2,Bi
Al *,A2,Bi l
,B2
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
Al*,A2,A3,Bl *,B2
Al *,A2,A3,81 ,B2
Al ,A2,A3,Bl ,B2
*Unloaded compressor.
tCompressor unloader, standard.
**Compressor unloader, accessory ttTwo unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing.
-
AIBIL *
Al
Ai,Bi l
,Bl tt,B2
Al .Bl tt.B2
At ,Bf’*;B2
Al ,Bl ,B2
Al .A2.B1 tt.B2
Ai ,A2,Bl’*;B2
Al ,A2,Bl ,B2
Al ,A2,A3,Bl tt,B2
Al ,A2,A3,Bl l
,B2
Al ,A2,A3,Bl ,B2
-
-
-
-
Bi*
A&l *
Al ,Bl*
Al ,Bl
Al *,Bl *,B2
Al ,Bl *,B2
Al
Al ,Bl ,B2 l
,A2,Bl l
,B2
Al ,A2,Bl *,B2
Al
Al ,A2,Bl ,B2 l
,A2,A3,Bl *,B2
Al ,A2,A3,Bl*,B2
Al ,A2,A3,Bl ,B2
15
UNIT
3 0 G N
Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant)
LOADING EQUENCE A
r
LOADING EQUENCE 8
%
Displacement
(Apwxl
6
::
:“;
-
-
-
-
-
-
-
-
zi
4 9
5 3 ii i: i i :
9 5
1 0 0
-
Compressors
y-p
AlPtlBl’
“Att;l”l’
Al ,‘sl
AWh$Y;
Al ,A2,&
Altt,A2,Bi*,B2
Al tt,A2,Bl ,B2
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
Al tt,A2,A3,Bl ,B2
Al *,A2,A3,Bl ,B2
Al .A2.A3.81
.B2
-
-
-
-
-
-
-
-
-
-
-
-
-
%
Displacement
UQwrox)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Compressors
-
-
-
-
-
-
-
-
-
-
-
B1 tt
BP-
AIBL *
Ai,Bl
Al *,Bl ft,B2
“Ai”B’lt”tb;’
Al’, Bl ,b2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al ,A2,A3,Bl *,B2
Al .A2,A3,Bl ,B2
$y!
Bitt
Bl*
AIBIL *
Al ;kBl
Al *,Bl tt,B2
“A;B~ltti3”2’
Al’,Bl*i32
Al ,A2,Bi *,B2
Al ,A2,Bl ,B2
Al ,A2,A3,Bl *,B2
Al ,A2,A3,Bl ,B2
-
-
-
-
B l *
150 (60 Hz)
Aly*,Blt**
15Aq y4
I
Al;Bl*
Al tt’,Bl
Al *,Bi
Al ,Bl
A l tt,A2,Bl
Al *,A2,Bl
Al ,A2,81
Al tt,A2,Bl *,B2
Al tt,A2,Bl ,B2
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
Altt,A2,A3,Bi ,B2
Al *,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
Ai*
A l % *
Al ‘,Bl
Al ,Bl
Ai*,A2,Bl*
Al *,A2,Bl
Al ,A2,Bl
Ai*,A2,Bl*,B2
Al*,A2,Bl,B2
Al ,A2,Bl ,B2
Al *,A2,A3,Bl *,B2
Al *.A2,A3.B1
.B2
Al ,k2,k3,Bl ,,B2
Al tt
A l *
Al;; Bl
A l * , &
Al ,Bl
Wh‘v‘&E&’
Al ,h2,1Bl
Al tt,A2,Bl ,B2
Al *,A2,Bl ,B2
Af ,A2,Bl ,B2
Al tt,A2,A3,Bi ,B2
Al *,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
*Unloaded compressor.
tCompressor unloader, standard
**Compressor unloader, accessory.
ttTwo unloaders, both unloaded
NOTE: These capacity control steps may vary due to lag compressor sequencing
16
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Al&q*
Al ,‘sl*
Al ,Bl
Al *,Bl *,B2
Al ,Bl *,B2
Al ,Bl ,B2
Al *,A2,Bl *,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al *,A2,A3,Bl *,B2
Al ,A2,A3,Bl *,B2
Al ,A2,A3,Bl ,B2
-
-
-
-
-
-
-
-
-
-
-
UNIT
SIZE
150 (50 Hz)
Alt,Bly*
Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant)
SEQUENCE B
LOADING SEQUENCE A
%
Displacement
Compressors
(4wrox)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
A2.p
Compressors
Bitt
Bl-*.
“A;“B’:t;3”2’
Al’,Bl*‘BP
Al ,A2,Bl’tt,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al ,A2,A3,Bltt,B2
Al ,A2,A3,Bl*,B2
Al ,A2,A3,Bl ,B2
“B’.p
150 (50 Hz)
Alr*,Blt*”
170, 270A, 300B,
,
A+;~;1
Al ,‘Bl
Al tt,A2,81
Al *,A2,Bl
Al ,A2,Bl
Al tt,A2,Bl ,B2
Al *,A2,Bi ,B2
Al ,A2,Bl ,B2
Al tt,A2,A3,Bl ,B2
Al *,A2,A3,Bl ,B2
Al .A2,A3,Bl ,B2
A l *
A l % *
Al*‘.Bl
Al ,‘Bl
Al *,A2,Bl*
Al ‘,A2,Bl
Al ,A2,Bl
Al *,A2,Bl *,B2
Al *,A2,Bi ,B2
Al ,A2,Bl ,B2
Al *,A2,A3,Bl *,B2
Al *,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
Al*.A2.A3,Bl *.B2.83
Al ‘,Ai,A$Bl,82,83
Al ,A2,A3,Bl ,B2,B3
A$!!
170, 270A, 3008,
AltyBl*
A&tttt;’
Al ,kl
Al tt,A2,Bl* y&t3g
Al ,i2,kl
Altt,A2,Bl *,B2
Al tt,A2,Bl ,B2
Al *,A2,61 ,B2
Al ,A2,Bl ,B2
Al tt,A2,A3,Bl *,B2
Al tt,A2,A3,Bl ,B2
Al *,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
Al tt,A2,A3,Bl *,B2,B3
Altt,A2,A3,Bl ,B2,B3
Al*,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,B3
*Unloaded compressor.
tCompressor unloader, standard.
**Compressor unloader, accessory ttTwo unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
A~i~~~~
AljBl
Al .Bl tt.B2
Ai ,B1’*;[32
Al ,Bl ,B2
Al ,A2,Bl tt,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al ,A2,A3,Bl tt,B2
Al ,A2,A3,Bl *,B2
Al ,A2,A3,Bl,B2
Bl”
A&*
Al ,‘sl*
Al ,Bl
Al *,Bl *,B2
Al ,Bl *,B2
Al ,Bl ,B2
Al *,A2,Bi l
,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al *,A2,Bl *,B2,83
Al,A2,Bl*,B2,B3
Al ,A2,Bl ,B2,B3
Al *,A2,A3,Bl *,B2,B3
Al ,A2,A3,Bl *,B2,B3
Al ,A2,A3,Bl ,B2,83
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1 7
UNIT
SIZE
Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant)
170, 270A,300B,
LOADING SEQUENCE A
%
Displacement Compressors
(Aiwrox)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Al tt
Al*
r
LOADING SEQUENCE B
6
Compressors
yp
;-;,q
Ai,Bi*
Al ,Bl
Al*,BItt,B2
“Ai”B’lttb”2’
Al’,Bl*BP
Al *,A2,Bi tt,B2
Al ,A2,Bl tt,B2
Al ,A2,Bl l
,B2
Al ,A2,Bl ,B2
Al *,A2,Bi -ft,B2,B3
Al ,A2,Bltt,B2,B3
Al ,A2,Bl *,B2,B3
Al ,A2,Bl ,B2,B3
Al *,A2,A3,Bl tt,B2,B3
Al ,A2,A3,Bl tt,B2,63
Al ,A2,A3,Bi l
,B2,B3
Al .A2.A3.Bl .B2.B3
B;$+
Al;Bl*
“Alt;tbT’
~l*;;{#
Al ,Bl
Alft,A2,Bl*
A&t$$V;
Ai,Bl*
Al ,Bl
Al *,Bl tT,B2
“A’iBe’~~~22
170,27OA, 300B,
Al ,A2,Bl
Altt,A2,Bl*,B2
Al tt,A2,Bl ,B2
Al *,A2,B1 ,B2
Al ,A2,Bl ,B2
Al tt,A2,A3,Bi *,B2
Al tt,A2,A3,Bl ,B2
Al”,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
Al tf,A2,A3,Bl *,B2,B3
Al tt,A2,A3,Bl ,B2,B3
Al*,A2,A3,Bl ,B2,83
Al .A2,A3.B1
.B2,B3
Al*
Al’,Bl ,B2
Al *,A2,Bl tt,B2
Al ,A2,Bl tt,B2
Al ,A2,Bi *,B2
Al ,A2,Bl ,B2
Al *,A2,Bl tT,B2,B3
Al ,A2,Bltt,B2,B3
Al ,A2,81*,82,83
Al ,A2,Bl ,B2,B3
Al*,A2,A3,Bl tt,B2,B3
Al ,A2,A3,Bltt,B2,B3
Al ,A2,A3,Bl *,B2,B3
Al ,A2,A3,Bl ,B2,B3
Bl*
170,27OA,
9
300B,
33oA/,$cH350 Hz)
Al% *
Al ‘,Bl
Al ,Bl
Al *,A2,Bl*
Al *,A2,Bl
Al ,A2,Bl
Al *,A2,Bl *,B2
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
Al *,A2,A3,Bl *,B2
Al *,A2,A3,Bl ,B2
Al ,A2,A3,Bi ,B2
Al *,A2,A3,Bl *,B2,B3
Al *,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,83
*Unloaded compressor.
tcompressor unloader, standard.
**Compressor unloader, accessory.
ttTwo unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing
A&*
Al ,Bl*
Al ,Bl
Al *,Bl *,B2
Al ,Bl *,B2
Al ,Bl ,B2
Al *,A2,Bl *,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al *,AZ,Bl *+B2,B3
Al ,A2,Bl*,B2,B3
Al ,A2,Bl ,B2,83
Al *,A2,A3,Bl *,B2,B3
Al ,A2,A3,Bl*,B2,B3
Al ,A2,A3,Bl ,B2,B3
18
U N I T
SIZE
Table 4C - Capacity Control Steps, 130210 and Associated Modular Units (cant)
CONTROL
STEPS
l-
LOAD11
%
Displacement
(Approx) i
SEQUENCE A
Compressors r
LOAD11
%
Displacement i SEQUENCE B
Compressors
170, 270A, 300B,
33OA/z, t”fB,:“O Hz)
I
170, 270A, 3008,
33OA/z, t”609+{,50 Hz)
,
z; i:
-
-
-
-
-
-
-
-
:
11
1 9
; :
:i
3 7
:i
::
7 2
;:
9 6
1 0 0
-
-
-
-
-
-
-
-
-
-
-
-
-
A)$
Al+yBl*
Altt;3B11
Al ,Bl
Al tt,A2,61*
*‘-J-&W~’
Al ,1A2,Bl
Al tt,A2,Bl *,B2
Al tt,A2,Bl ,B2
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
Al tt,A2,A3,Bl *,B2
AlTt,A2,A3,Bl ,B2
Al *,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
Al tt,A2,A3,Bl *,B2,83
Altt,A2,A3,Bl ,B2,B3
Al*,AZ,A3,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,B3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
*;p
(APP~~x)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Al’,Bl
Al *,BlTj-,B2
Al ,Bl tt,B2
A l . B l *.B2
Ai,Bl ,b2
Al*.A2,Bl tt,B2
Al ,A2,Bl ff,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al *,A2,BItt,B2,B3
Al ,A2,Bltt,BZ,B3
Al ,A2,Bl *,B2,83
Al ,A2,Bl,B2,B3
Al *,A2,A3,Bltt,B2,B3
Al .A2.A3,Bl tt,B2,B3
Ai ,Ai,A$,Bt’*;82,63
Al ,A2,A3,Bl ,B2,B3
BB’!J
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
I31
Al*,Bltt
*~i~~~~
Al;T’Bl*
Al +,Bl
Al l
,Bl
Al ,Bl
Al t-),*2,61 *
“A! tA$2f,’
;;*;,’ ‘j
Ai,Bl*
Al ,Bl
Al tt,Bl
t-t,82
Al *,Bl tt,B2
“d;“B’W@&’
170,27OA, 3008,
330~A~~~f\; ff Hz)
,
81 i i ;
:A
1 0 0
Al*A2 Bl
Alft,A2,B’ltt,B2
Al tt,A2,Bl *,B2
Altt,A2,Bl ,B2
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
Al tT,A2,A3,Bl tt,B2
Al tt,A2,AS,Bf *,B2
Al tt,A2,A3,Bl ,B2
Al *,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
Altt,A2,A3,Bltt,B2,B3
Altt,A2,A3,Bl*,B2,B3
Al tt,A2,A3,Bl ,B2,B3
Al *,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bi ,BZ,B3
Al’,Bl*‘BZ
Al *,A2,Bi tt,B2
Al ,A2,Bl TT,B2
Al ,A2,Bl*,E32
Al ,A2,Bl ,B2
Al tt,A2,Bl tt,B2,B3
Al *,A2,Bl tt,B2,B3
Al ,A2,Bi tt,B2,B3
Al ,A2,Bi *,B2,83
Al ,A2,Bl ,B2,83
Al Tt,A2,A3,Bl tt,B2,B3
Ai*,A2,A3,Bltt,B2,B3
Al ,A2,A3,BlTt,B2,B3
Al ,A2,A3,Bl *,B2,B3
Al ,A2,A3,Bl ,B3,83
*Unloaded compressor.
j-Compressor unloader, standard
**Compressor unloader, accessory ttTwo unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing.
1 9
-
UNIT
SIZE
190,36OA/B,
39oEpt Hz)
I
190,36OA/B,
39;: jfj’;,“”
,
190, 360A/B,
39;; (BGp*w
,
Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant)
r
l-
LOADIN< SEQUENCE B
CKEL
Compressors
%
Displacement
OVvW
Compressors
-
-
-
-
Ah
Al j2,B-i
Al ,A2,Bl ,B2
Al ,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2,63
Al* yp;
Al *,A2,81
Al ,A2,B1
Al *,A2,Bl ,B2
Al ,A2,81 ,B2
Al *,A2,A3,Bl ,B2
Al ,A2,A3,81 ,B2
Al *,A2,A3,Bi ,B2,B3
Al ,A2,A3,Bl ,B2,B3
-
-
-
-
-
-
-
-
-
-
-
-
A l *
Al
Al *,Bl *
Al *,Bl
Al,Bl
Al *,A2,Bl*
Al *,A2,Bl
Al ,A2,Bi
Al *,A2,Bl *,B2
Al *,A2,Bl ,B2
Al
Al ,A2,Bl ,B2 l
,A2,A3,Bl *,B2
Al *,A2,A3,Bl ,B2
Al
Al ,A2,A3,Bl ,B2 l
,A2,A3,Bl*,B2,B3
Al *,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,83
2
41
5 6
1;:
-
-
-
-
-
-
-
-
A1B’Bl
Al ,&I ,B2
Al ,A2,Bl ,B2
Al .A2.B1 .B2.B3
Al ,A2,d3& ,@2,B3
-
-
-
-
-
-
-
-
-
-
-
Bl*
AIBf& *
Ai,Bl
Al ,Bl *,B2
Al,Bl,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al ,A2,Bl *,B2,B3
Al ,A2,Bl ,B2,B3
Al ,A2,A3,Bl *,B2,83
Al ,A2,A3,Bl ,B2,B3
Bl*
Al& l
Al,i31*
Al ,Bl
Al *,Bl*,B2
Al ,Bl*,B2
Al ,Bl ,B2
Al*,A2,Bi *,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al *,A2,Bl l
,B2,B3
Al ,A2,Bl *,B2,B3
Al ,A2,Bl ,B2,B3
Al *,A2,A3,Bl *,B2,83
Al ,A2,A3,Bl l
,B2,B3
Al ,A2,A3,Bl ,B2,B3
A%1
Al ,EkB2
Al ,A2,Bl ,B2
Al ,A2,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,B3
-
-
190,36OA,
39OE31(6CC Hz)
,
A%1
Al ,A2,Bi
Al ,A2,Bl ,B2
Al ,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2,B3
A l * fk;
190,36OA,
39;; j:;,W
I
;;*A$&
Al *,A2,& ,B2
Al
Al ,A2,Bl ,B2 l
,A2,A3,Bi ,B2
Al ,A2,A3,Bl ,B2
Al *,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,B3
*Unloaded compressor.
tCompressor unloader, standard.
**Compressor unloader, accessory.
TtTwo unloaders, both unloaded
NOTE: These capacity control steps may vary due to lag compressor sequencing
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
20
UNIT
SIZE
190,36OA,
39:: (8514w
,
Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant)
CONTROL
S T E P S
r
LOADING SEQUENCE A
%
Displacement Compressors
UVvW
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
l-
LOAD11
%
Displacement
PWprox)
1 1
:; ii
5 0
61
7; a 3
9 4
100
i SEQUENCE B
Compressors
Bl*
AIBt& *
Ai,Bl
Al ,Bl *,B2
Al,Bl,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al ,A2,Bl *,B2,B3
Al ,A$,A$,Bi l
,82,83
Al ,A2,A3,Bl ,B2,B3
Bl*
A l *
190,36OA,
=J”8”1 y
,
Al%
l
Al’,BI
Al ,Bl
Al*,A2,Bi*
Al *,A2,Bl
Al ,A2,Bl
Al *,A2,Bl *,B2
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
Al *,A2,A3,Bl *,B2
Al *,A2,A3,Bi ,B2
Al ,A2,A3,Bl ,B2
Al *,A2,A3,Bl *,B2,83
Al *,A2,A3,Bl ,B2,63
At ,A2,A3,B t ,B2,B3
A&*
Al,i31*
Al
Al ,Bl l
,Bl *,B2
;-,BB’;g
Al *,i2,B? *,B2
Al ,A2,Bi *,B2
Al ,A2,Bi ,B2
Al *,A2,Bl *,B2,83
Al ,A2,Bl *,B2,B3
AI ,A2,Bl ,B2,B3
Al*,A2,A3,Bl*,B2,B3
AI .A2.A3.Bl
*.B2.B3
1 4
210,39QA,
420%:
(86p Hz)
I
210, 390A,
42y3g HZ)
,
210, 390A,
42of,Bs(f~~ Hz)
1
-
-
-
-
-
-
-
-
-
A&
Al ,A2,Bl
Al ,A2,Bl ,B2
Al ,A2,A3,81 ,B2
AI ,A2,A3,Bl ,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
A l *
Al
Al”B1
Al ,kl l
,A2,Bl
Al
Al ,A2,Bl l
,A2,Bl ,B2
Al
Al ,A2,Bl ,B2 l
,A2,A3,Bl ,B2
Al
At ,A2,A3,Bt ,B2 l
,A2,A3,61 ,B2,B3
Al
Al ,A2,A3,Bl ,B2,B3 l
,A2,A3,A4,Bi ,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
AK1
Al $1 ,B2
Al ,A2,Bl ,B2
Al ,A2,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,B3
Al ,A2,A3.A4,Bl ,B2.B3
-
-
-
-
-
-
-
-
-
-
-
-
-
Bl*
Al’:1 *
Ai,Bi
Al,Bl*,B2
Al ,Bl ,B2
At ,A2,BI l
,B2
Al ,A2,Bl ,B2
Al ,A2,Bl l
,B2,B3
Al ,A2,Bl ,B2,B3
Al ,A2,A3,Bl *,B2,83
Al ,A2,A3,Bl ,B2,B3
Al ,A2,A3,A4,Bl *,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
*Unloaded compressor.
j-Compressor unloader, standard.
**Compressor unloader, accessory.
ttTwo unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing.
2 1
r-
UNIT
SIZE
210, 390A,
420AIB (60 Hz)
Al**,Bl**
Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant)
LOAD11
i
SEQUENCE A
Compressors
Al*
Al% *
Al ‘,Bl
Al,Bi
Al *,A2,Bl*
Al *,A2,Bl
Al ,A2,Bf
Al”,AP,Bi *,B2
Al l
,A2,Bl ,B2
Al ,A2,Bl ,B2
Al *,A2,A3,Bl ‘,B2
Al *,A2,A3,Bi ,B2
Al ,A2,A3,Bl ,B2
Al *,A2,A3,Bl *,E32,B3
Al *,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bi ,B2,B3
Al *,A2,A3,A4,Bl *,B2,B3
Al *.A2.A3.A4.B1
,B2,B3
Al ,k2,A3,A4,Bl ,B2,B3 f
LOADING SEQUENCE B
%
Displacement Compressors
(Approx)
9
Bl*
i;
Al% *
Al .Bl*
Al’,Bl
Al*.Bl*,B2
Al ,Bl *,B2
Al ,Bl ,B2
Al *,A2,Bl *,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al *,A2,Bl *,B2,B3
Al ,A2,Bl*,B2,B3
Al ,A2,Bl ,B2,B3
Al *,A2,A3,Bl *,B2,83
Al ,A2,A3,Bl *,B2,B3
Al ,A2,A3,Bl ,B2,B3
AY*,A2,A3,A4,Bi *,B2,B3
Al ,A2,A3,A4,Bl*,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
210, 390A,
420/U; f-5; Hz)
,
210, 390A,
42Ofy;; w
,
A&
Al ,A2,Bl
Al ,A2,Bl ,B2
Al ,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
A l ”
Al”B1
Al ,Bl
Al *,A2,Bl
Al ,A2,Bl
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
Al*,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
Al *,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bi ,B2,83
Al*,A2,A3,A4,Bl ,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
-
-
-
-
-
-
210, 390A,
42Of,~gw
,
210,39OA,
42\yE gyp)
I
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Al*
Al% *
Al ‘,Bl
Al ,Bl
Al*,A2,Bl*
Al
Al *,A2,Bl
Al ,A2,Bl l
,A2,Bl *,B2
Al *,A2,Bl ,I32
Al ,A2,Bl ,B2
Al *,A2,A3,Bl *,B2
Al *,A2,A3,Bi ,B2
Al ,A2,A3,Bl ,B2
Al *,A2,A3,Bl *,B2,B3
Al *,A2,A3,Bl ,B2,83
Al ,A2,A3,Bl ,B2,83
Al*,A2,A3,A4,Bl*,B2,83
Al *,A2,A3,A4,Bl ,WB3
Al .A2.A3.A4.B1
BZB3
*Unloaded compressor tCompressor unloader, standard
**Compressor unloader, accessory ttTwo unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing.
22
-
-
-
-
-
-
-
A&
Al $1 ,B2
Al ,A2,B1 ,B2
Al ,A2,Bl ,B2,B3
Al .A2.A3.Bl .B2.B3
Al ,A2,A3,A4,Bl ,B2,B3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Bl*
AIB& *
Al’,Bl
Al ,Bl *,B2
Al ,Bl ,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al ,A2,Bl *,B2,B3
Al ,A2,Bl ,B2,B3
Al ,A2,A3,Bl *,B2,B3
Al ,A2,A3,Bl ,B2,B3
Al ,A2,A3,A4,B1 *,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
B l *
Al& *
Al .Bl*
Al’,Bi
Al*.Bl*,B2
Al ,Bl *,B2
Al
Al ,Bl ,B2 l
,A2,Bl *,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al *,A2,Bl *,B2,B3
Al ,A2,Bl *,B2,B3
Al ,A2,Bl ,B2,83
Al *,A2,A3,Bl*,B2,B3
Al ,A2,A3,Bl *,B2,B3
Al ,A2,A3,Bl ,B2,83
Al*,A2,A3,A4,Bl*,B2,83
Al ,A2,A3,A4,81*,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
A
UNIT
30GT
225 (60 Hz) r
Table 4D - Capacity Control Steps, 225, 250,280
LOAC
%
Displacement
(Awox)
1 2
2
4 6
E
1:;
\IG SEQUENCE A
Compressors
*1A’B1
Al ,A2,61
Al ,A2,Bl ,B2
Al ,A2,A3,Bl ,B2
Al ,A2,A3,Bf ,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
Al.A2.A3.A4.Bl.B2.B3.84
Al*
Al?Bl
Al ,Bl
Al *,A2,Bl
Al ,A2,Bl
Al
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2 l
,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
Al *,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,83
Al *,A2,A3,A4,Bl ,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
Al*,A2,A3,A4,Bl,B2,B3,B4
Al ,A2,A3,A4,Bl ,B4,63,A4
A l *
Al _
Al *,Bl*
Al,Bl*
Al,Bl
Al *,A2,Bl*
Al *,A2,Bl
Al ,A2,Bl
Al *,A2,Bl *,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al *,A2,A3,Bl *,B2
Al *,A2,A3,Bl ,B2
Al
Al ,A2,A3,Bl ,B2 l
,A2,A3,Bl l
,B2,B3
Al ,A2,A3,Bl *,B2,B3
Al ,A2,A3,Bl ,B2,B3
Al *,A2,A3,A4,Bl *,B2,B3
Al*,A2,A3,A4,Bl ,B2,83
Al ,A2,A3,A4,Bl ,B2,B3
Al*,A2,A3,A4,Bl*,B2,83,84
Al.A2.A3.A4.Bl*.B2.B3.84
A1’,Ai,A$A4,Bl ,B2,B3,B4 r
LOADING SEQUENCE B
%
Displacement
hwrox)
1 2
Compressors
A&
Al $1 ,B2
Al ,A2,Bl ,B2
Al ,A2,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,B3,B4
Al,A2,A3,A4,Bl,B2,B3,B4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Bl*
Ai&*
Al ‘,Bl
Al ,Bl
Al *,Bl *,B2
Al ,Bl *,B2
Al,Bl,B2
Al *,A2,Bl *,B2
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
Al *,A2,Bl *,B2,83
Al ,A2,Bl*,B2,83
Al
Al ,A2,Bl ,B2,B3 l
,A2,A3,Bl*,B2,B3
Al *,A2,A3,Bl ,B2,83
Al ,A2,A3,Bl ,B2,83
Al *,A2,A3,Bl *,B2,83,84
Al ,A2,A3,Bl*,B2,B3,B4
Al ,A2,A3,Bl ,B2,B3,B4
Al*,A2,A3,A4,Bl*,B2,B3,B4
Al*,A2,A3,A4,Bl,B2,83,B4
At ,A2,A3,A4,Bl ,A2,B3,B4
225 (50 Hz)
A%
Al ,A2,Bl
Al ,A2,Bl ,B2
Al ,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
Al,A2,A3,A4,Bi,B2,B3,84
Al*
Ali’Bl
Al ,Bl
Al *,A2,Bl
Al ,A2,Bl
At *,A2,Bl ,B2
Al ,A2,Bl ,B2
Al *,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
Al *,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,B3
Al *,A2,A3,A4,Bl ,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
Al*,A2,A3,A4,Bl ,B2,B3,B4
Al,A2,A3,A4,Bl,B2,B3,84
*Unloaded compressor.
TCompressor unloader, standard.
**Compressor unloader, accessory
TtTwo unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
AL
Al $1 ,B2
Al ,A2,Bl ,B2
Al ,A2,Bl ,B2,83
Al ,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,B3,B4
Al,A2,A3,A4,Bl,B2,B3,B4
-
-
-
-
-
-
-
-
-
-
-
-
23
UNIT
30GT
250 (60
Hz) r
Table 4D - Capacity Control Steps, 225, 250,280 (cant)
LOAC
JG SEQUENCE A
l-
LOAC
Compressors
4G SEQUENCE B
Compressors
Al*
Al% *
Al ,Bl*
Al ,Bl
Al *,A2,81*
Al *,A2,Bl
Al ,A2,Bl
Al *,A2,Bl *,B2
Al ,A2,B1 *,B2
Al ,A2,Bl ,B2
A l *,A2,A3,Bf*,B2
Al *,A2,A3,Bl ,B2
Al ,A2,A3,Bi ,B2
Al*,A2,A3,Bi*,B2,63
Al*,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,B3
Al *,A2,A3,A4,Bl*,B2,83
Al *,A2,A3,A4,Bl ,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
Al*,A2,A3,A4,Bl*,B2,83,B4
Al*.A2.A3.A4.Bl.B2.63.84
Al ,A2,A3,A4,Bl ,B2,B3&4
Bl*
Al*B&*
Al,Bl*
Al ,Bl
Al *,A2,Bl*
Al *,A2,Bl
Al ,A2,Bl
Al *,A2,Bl *,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al *,A2,A3,BI *,B2
Al*,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
Al’,A2,A3,Bi*,B2,B3
Al *,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,83
Al*,A2,A3,A4,Bl*,B2,B3
Al *,A2,A3,A4,B1 ,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
Al*,A2,A3,A4,Bl*,B3,B3,64
Ai*,A2,A3,A4,Bl ,B2,B3,B4
Al,A2,A3,A4,Bl,B2,B3,84
2 2
3 2
A%1
Al ,A2,Bl
Al ,A2,Bl ,B2
Al ,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2,B3
Al .A2.A3,A4.B1
.B2.B3
2 9
3 2 t:
5 4
5 7
100 s7:
:i
9 6
A l *
Al!‘Bl
Al ,Bl
“A:*gB;
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
Al *,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
Al *,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,B3
Al *,A2,A3,A4,Bl ,B2,B3
Al ,A2,A3,A4,Bi ,B2,B3
A1*,A2,A3,A4,Bl ,B2,B3,B4
Al,A2,A3,A4,Bl ,B2,B3,B4
A l *
Al% *
Al ,bl l
Al ,Bl
Al*,A2,Bl*
Al *,A2,01
Al
Al ,A2,Bl l
,A2,Bl *,B2
Al ,A2,Bl*,B2
Al ,A2,Bl ,B2
Al *,A2,A3,Bl*,B2
Al *,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
Al*,A2,A3,Bl*,B2,B3
Al ,A2,A3,Bl *,B2,63
Al ,A2,A3,Bl ,B2,83
Al *,A2,A3,A4,Bl*,B2,B3
Al*,A2,A3,A4,Bl,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
Al*,A2,A3,A4,Bl*,B2,B3,B4
Al,A2,A3,A4,Bl*,B2,B3,B4
Al,A2,A3,A4,Bl,B2,63,84
*Unloaded compressor.
JCompressor un!oader, standard
**Compressor unloader, accessory ttTwo unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing.
-
-
-
-
-
-
-
-
-
AK31
Al $1 ,B2
Al ,A2,Bl ,B2
Al ,A2,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,83
Al .A2.A3.Bl
.B2,B3.B4
Al ,A2,d3,A4,Bl ,B2,B3,B4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Bl”
Al% *
Al ‘,Bl
Al ,Bl
Al *,Bl*,B2
A l , B l “,B2
Al
Al ,Bl ,B2 l
,A2,Bl *,B2
Al *,A2,Bl ,B2
Al ,A2,Bl ,B2
Al *,A2,Bl *,B2,B3
Al ,A2,Bl *,B2,B3
Al ,A2,Bl ,B2,B3
Al*,A2,A3,Bl*,B2,B3
Al*,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,83
Al*,A2,A3,Bl *,B2,B3,B4
Al,A2,A3,Bl*,B2,83,84
Al ,A2,A3,Bi ,B2,B3,B4
Al*,A2,A3,A4,Bl*,B2,B3,B4
Al*,A2,A3,A4,Bl,B2,B3,84
Al ,A2,A3,A4,Bl,B2,63,84
2 4
UNIT
3 0 G T
CONTROL
S T E P S
Table 4D - Capacity Control Steps, 225, 250, 280 (cant)
1G SEQUENCE A
r
LOADING SEQUENCE B
Compressors Compressors
250 (50 Hz)
280 (60 Hz)
250 f& Hz),
Al**
Al
Al ,A2,61
Al ,A2,Bl ,B2
Al ,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2,B3
Al ,A2,A3,A4,Bl ,B2,83
Al,A2,A3,A4,Bl,B2,B3,B4
A l ”
AlA’Bl
Al
Al ,Bl l
,A2,Bl
Al ,A2,Bl
Al *,A2,Bl ,I32
Al ,A2,Bl ,B2
Al*,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
At*,A2,A3,Bl ,B2,B3
Al
Al ,A2,A3,Bl ,B2,B3 l
,A2,A3,A4,Bi ,B2,B3
Al ,A2,A3,A4,Bl ,B2,B3
Al*,A2,A3,A4,Bl,B2,83,84
Al,A2,A3,A4,Bl,B2,B3,B4
A l *
250 $;; Hz),
Al**,Bl**
Al% *
Al ,Bi*
Al ,Bl
Al *,A2,Bl*
Al ‘.A2.B-l
Al ,A2,Bl
Ai *.A2.B1 *,B2
Al ,A2,Bl *,B2
Al ,A2,Bl ,B2
Al *,A2,A3,Bl *,B2
Al l
,A2,A3,Bl ,B2
Al ,A2,A3,Bl ,B2
Al*,A2,A3,Bl *,B2,B3
Al ,A2,A3,Bi *,B2,B3
Al ,A2,A3,Bl ,B2,83
Al *,A2,A3,A4,Bl *,B2,B3
Al *,A2,A3,A4,Bl ,B2,83
Al ,A2,A3,A4,Bl ,B2,B3
Ai*,A2,A3,A4,Bl*,B2,B3,B4
Ai,A2,A3,A4,Bl*,B2,B3,B4
Ai,A2,A3,A4,Bl,B2,B3,B4
*Unloaded compressor.
-
-/-Compressor unloader, standard.
““Compressor unloader, accessory ttTwo unloaders, both unloaded
NOTE: These capacity control steps may vary due to lag compressor sequencing
AK1
Al $1 ,B2
Al ,A2,Bi ,B2
Al ,A2,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,B3
Al ,A2,A3,A4,Bl ,B2,83
Al,A2,A3,A4,Bl,B2,B3,84
-
-
-
-
-
-
Bi*
-
-
-
-
-
-
-
A&*
Al ‘,Bl
Al
Al ,Bi l
,Bl*,B2
Al ,Bi *,B2
Al ,Bl ,B2
Al*,A2,Bl *,B2
Al l
,A2,Bl ,B2
Al ,A2,Bl ,B2
Al *,A2,Bl *,B2,B3
Al ,A2,Bl *,B2,B3
Al ,A2,Bl ,B2,63
Al*,A2,A3,Bi *,B2,B3
Al*,A2,A3,Bl ,B2,B3
Al ,A2,A3,Bl ,B2,B3
Al *,A2,A3,Bi*,B2,B3,B4
Al ,A2,A3,Bl*,B2,B3,B4
Al ,A2,A3,Bl ,B2,B3,B4
Al*,A2,A3,A4,Bl*,B2,B3,B4
Ai*,A2,A3,A4,Bi,B2,83,B4
Al ,A2,A3,A4,Bi ,B2,B3,B4
2 5
Head Pressure Control
- The microprocessor controls the condenser fans in order to maintain the lowest condensing temperature possible, thus the highest unit efficiency.
Instead of using the conventional head pressure control methods, the fans are controlled by the position of the EXV and suction superheat.
As the condensing temperature drops, the EXV opens to maintain the proper suction superheat. Once the EXV is fully open, if the condensing temperature continues to drop, the suction superheat begins to rise. Once the suction superheat is greater than 40 F (22.2 C), a fan stage is removed after 2 minutes,
As the condensing temperature rises, the EXV closes to maintain the proper suction superheat. Once the EXV has closed to 39.5% open (300 steps open), a fan stage is added after 2 minutes.
During start-up, all the condenser fans are started when the condensing temperature reaches 95 F (35 C) to prevent excessive discharge pressure during pulldown. See Table 5 for condenser fan sequence of operation.
30GN040-050
30GN060,070
30GN080,090
FAN ARRANGEMENT
Table 5 - Condenser Fan Sequence
I I
FAN NUMBER(S)
1
2
3
FAN CONTACTOR
WI
FC-Al
FC-Bi
FC-A2
I
4 FGB2
FC-Al
5 6
FGB2
FC-Al
I
I
CONTROLLED BY
Compressor Al
Compressor Bl
First Stage
Microprocessor
Second Stage
MicrODrOceSSOr
Compressor Al
Compressor Bi
First Stage
Microprocessor
Second Stage
Microprocessor
Compressor Al
Compressor Bi
. -_----
30GNl00,110 (and associated modular units)
30GN130-170 (and associated modular units)
WWER
30GN190,210 (and associated modular units)
1
2
3
4
5, 7, 6, 8
3, 4, 5, 6, 7, a
5 7
6,
8
FC-Al
F C - 8 1
F C - A 2
F&B2
FC-AS, FGB3
FC-A2, FC-A3 ,
FGB2, FC-B3
FC-Al
FC-Bl
Compressor Al
Compressor Bl
First Stage
Microprocessor
Second Stage
Compressor
T h i r d Stage
Microprocessor
Compressor Al
Compressor Bl
I
5, 7
6 . 8
3, 9
4, 10
1 , 3, 9, 11
2, 4 , 10, 1 2
I
I
FC-A2, FC-A3
FC-Al
FC-Bi
FC-A2
FC-B2
FC-A2, FGA3
FGB2, FC-B3
I
I
Compressor Al
Comwessor Bl
Frist Stage
Microprocessor
Second Stage
Microprocessor
*Control box.
26
L
/ ‘: i
/; k.
w
30GT225
30GT250 (60 Hz)
30GT250 (50 Hz) AND 30GT280
Table 5 - Condenser Fan Sequence (cant)
FAN ARRANGEMENT
FAN NUMBER(S)
7, 8
9, 1 0
5,
6
11, 1 2
1, 2, 3 , 4
13, 14, 15, 16
1, 2, 3, 4, 5, 6
11, 12, f3, 14, 15, 1 6
7, 8, 10
9, 17, 1 8
5, 6
11, 12, 19
1, 2, 3, 4, 13,
14, 15, 16, 20
1 , 2, 3, 4, 5, 6, 11, 12, 13,
14, 15, 16, 19, 2 0
7, 8, 1 0
9, 17, 1 8
5,
6
II, 12, 19,20
1, 2, 3, 4, 13,
14, 15, 16, 21, 22
1, 2, 3, 4, 5, 6, 11, 12, 13,
14, 15, 16, 19, 20, 21, 2 2
FAN C~;;jACToR CONTROLLED BY
FC-1
FC-4
FC-2
FC-5
FC-3
FC-6
FC-2, FC-3
FC-5, FC-6
F C - 1
FC-4
FC-2
FC-5
FC-3, FC-6, FC-7
FC-;&F6c;3kF;-5,
-3 -
FC-1
FC-4
FC-2
FC-5
FC-3, FC-6, FC-7
FC-2, FC-3, FC-4,
FC-5, FC-6, FC-7
Compressor Al
Compressor 61
First Stage
Microprocessor
Second Stage
Microprocessor
T h i r d S t a g e
Microprocessor
Compressor Al
Compressor Bl
First Stage
Microprocessor
Second Stage
Microprocessor
T h i r d S t a g e
Microprocessor
Compressor Al
Compressor Bl
First Stage
Microprocessor
Second Stage
Microprocessor
T h i r d S t a g e
Microprocessor
*Control box.
tPower box.
Pumpout -
When the lead compressor in each circuit is started or stopped, that circuit goes through a pumpout cycle to purge the cooler and refrigerant suction lines of refrigerant.
The pumpout cycle starts immediately upon starting the lead compressor and continues until the saturated suction temperature is 10” F (5.5” C) below the saturated suction temperature at start-up, is 10” F (5.5” C) below the cooler leaving fluid temperature, or reaches a saturated suction temperature of -15 F (-26 C). No pumpout is necessary if the saturated suction temperature is below -15 F (-26 C). At this point, the EXV starts to open and continues to open gradually to provide a controlled start-up to prevent liquid flood-back to the compressor.
At shutdown, the pumpout cycle continues until the saturated suction temperature for that circuit is 10” F (5.5” C) below the saturated suction temperature when pumpout is initiated, or saturated suction temperature reaches -15 F
(-26 C). At that point, the compressor shuts down and the
EXV continues to move until fully closed.
27
Keypad and Display Module (Also Called HSIO or LID)
- The only function of this module is to allow the operator to communicate with the processor. It is used to enter configurations and set points and to read data, perform tests, and set schedules. This device consists of a keypad with 6 function keys, 5 operative keys, 12 numeric keys
(0 to 9, 0, and -), and an alphanumeric g-character LCD
(liquid crystal display). See Fig+ 3. See Table 6 for key usage.
ACCESSING FUNCTIONS AND SUBFUNCTIONS - See
Tables 6 - 8. Table 7 shows the 6 functions (identified by name) and the subfunctions (identified by number).
Fig. 3 - Keypad and Display Module
SUMMARY DISPLAY - When keypad has not been used for 10 minutes, display automatically switches to the rotating summary display. This display has 4 parts, listed below, which appear in continuous rotating sequence.
DISPLAY
TUE 15:45
1 E X P A N S I O N
TODAY IS TUE, TIME IS 1545 (3:45 PM)
CLOCK ON
UNIT IS ON VIA CLOCK SCHEDULE
C O O L 1 NUMBER OF STAGES IS 1
I
2 ALARMS 1 2 ALARMS DETECTED
AUTOMATIC DISPLAY OPERATION/DEFAULT DIS-
PLAY - In this mode, the keypad displays the current time
(24”hour format), current operating modes, cooling capacity stages, and total number of alarms.
COOL x
DOW
- Day of Week
- Hour(s)
K - Minute(s)
MODE X
The default display is displayed every 2 seconds if there has been no manual input from the keypad for 10 minutes.
Table 6 - Keypad and Display Module Usage
FUNCTION
K E Y S
OPERATIVE
K E Y S
USE
STATUS - For displaying diagnostic codes and q
SRVC current operating information about the machine.
HISTORY - For displaying run time, cycles and previous alarms.
SERVICE - For entering specific unit configuration information.
ElEST
TEST - For checking inputs and outputs for
ElCHD proper operation.
SCHEDULE - For entering occupied/unoccupied schedules for unit operation
SET POINT - For entering operating set points and day/time information.
USE
EXPAND - For displaying a non-abbreviated expansion of the display
CLEAR - For clearing the screen of all displays
UP ARROW - For returning to previous display p o s i t i o n ,
DOWN ARROW - For advancing to next display p o s i t i o n .
A
ENTER - For entering data
KEYPAD OPERATING INSTRUCTIONS (Refer to
Table 9.)
1. White keys on left side of keypad are shown and operated in these instructions according to the following exq
, then the white key marked H .
2. The standard display uses abbreviations. Expanded information scrolls through the display whenever q key is pressed.
3. All functions are made up of a group of subfunctions.
To enter a subfunction, first press subfunction number desired. Then press the function key in which the subfunction resides. To move within that subfunction, press the q or m arrow. For example, a mpl enters the Temperature Information subfunction.
4. At any time, another subfunction may be entered by entering the subfunction number, then the function key.
5. Prior to starting unit, check leaving fluid set point for correct setting. Refer to Set Point Function section on page 39.
6. Depending on system configuration, all displays may not be shown. All displays are shown unless marked with the following symbol.
*Must be configured.
For additional unit start-up procedures, see separate Installation, Start-Up and Service Instructions supplied with unit.
28
su6FUNFT’oN
3
4
1
2
5
6
7
8
9
1 0
II
Status
A u t o m a t i c
Display
Alarm
D i s p l a y
;g;faQeratiw) plWe$Y
Set Points
(Current Operating)
Temperatures
Pressures
A n a l o g
I n p u t s outputs
-
Table
7
- Functions and Subfunctions
-
-
-
-
-
Test
TEST c l
outputs
Compressors and Unloaders
-
-
-
FUNCTIONS
Schedule
C H D
ICI
Override
Clock Set
Period 1
P e r i o d 2
P e r i o d 3
Period 4
Period 5
Period 6
Period 7
P e r i o d 8
HOLIDAYS
Service
c
SRVC l
-
-
-
-
Log On and
Log Off
V e r s i o n
(Software)
Factory
Configuration
F i e l d
Configuration
Service
Configuration
-
-
History
HIST
0
R u n T i m e
Starts
-
z
-
-
-
Alarm
History
-
-
-
-
-
-
-
-
Set Point
c
S E T l
S e t P o i n t s
(Chiller Fluid)
Reset
S e t P o i n t s
Demand Limit
S e t P o i n t s
Date and
T i m e
-
OPERATION
To access a function, press subfunction no and function name key. Display shows subf u n c t i o n @+oup.
To move to other elements, scroll up or down using arrow keys. NOTE: These displays do not show if control is not configured for reset.
Table 8 - Accessing Functions and Subfunctions
I
KEYPAD
ENTRY I
DISPLAY
RESPONSE
I p--jH
R E S E T
CRST2xx
CREF2xx
CRSTi x x
CREFlxx
I
When the last element in a subfunction has been displayed, the first element is repeated.
To move to next subfunction it is not necessary to use subfunction number Press function name key to ad-
Vance display through all subfunctions within a function and then back to the first
To move to another function, either depress function name key for desired function
(display shows the first s u b f u n c t i o n ) ,
Access a’ipecif ic subfunction by’using the subfunction number and the function name kev.
SET c l
SET
c l
SET
III
STAT
III
R E S E T
CRST2xx
DEMAND
T I M E
S E T
X ALARMS
DESCRIPTION
Reset Set Points
Cooling Maximum
Reset xx
Cooling Maximum
Reference xx
Cooling Minimum
Reference xx
Cooling Minimum
Reference xx
Reset Set
(ZtZi:SxxMaxirnurn
D e m a n d S e t
P o i n t s
Current Time and
Day of Week
U n i t S e t P o i n t s
-
R o t a t i n g D i s p l a y
Capacity Stages
29
2 ALARMS
3 MODES
4 STAGE
5 SET POINT
6 TEMPERATURE
I
LEGEND
CCN
- Carrier Comfort Network
E X V
- Electronic Expansion Valve
M O P
- Maximum Operating Pressure
Table 9 - Keypad Directory
KEYPAD ENTRY
STATUS
DISPLAY 1 COMMENT
Refer to Automatic Display Operation on page 28
Number of Tripped Alarms X A L A R M S
ALARM X
ALARM X
ALARM X
ALARM X
ALARM X
Displays Tripped Alarms
>
Number of Modes in Effect
X MODES
MODE X
MODE X
MODE X
MODE X
Displays Mode in Effect
S T A G E
S T A G E X
C A P T X
CAPA X
CAP0 X
L M T X *
LOAD X*
CIRA X
CIRB X
S M Z X
S E T P O I N T
SP x
M S P X
T W X
>
Capacity Staging Information
Number of Requested Stages
P e r c e n t o f T o t a l C a p a c i t y
Percent Circuit A Capacity
Percent Circuit 6 Capacity
Demand Limit Set Point
L o a d L i m i t S e t P o i n t
Circuit A Compressor Relay Status
Circuit B Compressor Relay Status
Load/Unload Factor for Compressors
Factor = 1 Unloader Factor = 0 6
Fluid Set Point Information
S e t P o i n t
Modified Set Point = Set Point + Reset
Cooler Leaving Fluid Temperature
T E M P S
EWTX
L W T X
S C T A X
S S T A X
CTA X
SHA X
Temperature Information
Cooler Entering Fluid Temperature
Cooler Leaving Fluid Temperature
Circuit A Saturated Condenser Temperature
Circuit A Saturated Suction Temperature
Compressor Al Suction Temperature
Circuit A Suction Superheat
*Must be configured j-If a p p l i c a b l e
3 0
6
;,;
SUBFUNCTION
6 TEMPERATURE (cant)
I
7 PRESSURE
8 ANALOG
9 1NPUTS
Table 9 - Keypad Directory (cant)
KEYPADENTRY
STATUS (cant)
DISPLAY
SCTB X
COMMENT
Circuit B Saturated Condenser Temperature
cl 4
qt cl 4 cl 4
0 4
S S T B X
C T B X
SHB X
R S T X *
Circuit B Saturated Suction Temperature
Compressor Bl Suction Temperature
Circuit B Suction Superheat
Reset Temperature
PRESSURE Refrigerant System Pressure (psig)
D P A X Circuit A Discharge Pressure
S P A X x x x x
OPA X
Circuit A Suction Pressure
Circuit A Discharge/Suction
Circuit A Oil Pressure Differential
Circuit B Discharge Pressure
DPB X
S P B X x x x x
O P B X
Circuit 8 Suction Pressure
Circuit B Discharge/Suction
Circuit B Oil Pressure Differential
ANALOG
REF X
L M T X *
R S T X *
I N P U T
SPW x*
DLI X*
DL2 X*
Status of Analog Inputs
Transducer Supply Voltage
Demand 4-20 mA Signal
Reset 4-20 mA Signal
Status of Switch Inputs
D u a l S e t P o i n t S w i t c h
D e m a n d L i m i t S w i t c h 1
D e m a n d L i m i t S w i t c h 2
31
SUBFUNCTION
10 OUTPUTS
Table 9 - Keypad Directory (cant)
STATUS (cant)
DISPLAY
OUTPUTS Status of Outputs
COMMENT
Alarm Relay K3 ALMR X
FRAI X
FRA2 X
FRBI X
FRB2 X
CHWP X*
Fan Relay Kl
Fan Relay K2
Fan Relay K4
Fan Relay K5
Cooler Water Pump Relay K6
ULAI X
ULA2 X*
ULBI X
ULB2 X*
E X V A X
E X V B X
HGBA X*
HGBB X
M M A X *
M M B X
Unloader Al t
Unloader A2T
Unloader Bl t
Unloader B2T
EXVA Percent Open
EXVB Percent Open
Hot Gas Bypass Relay Circuit A
Hot Gas Bypass Relay Circuit B
Motormaster@ A Output Percent
Motormaster B Output Percent
TEST
To use Test function, LOCAL/ENABLE-STOP-CCN switch must be in STOP position To operate a test, scroll to desired test
Then, press m to start test. Press m to stop test.
KEYPAD ENTRY
SUBFUNCTION
1 OUTPUTS
DISPLAY
OUTPUTS
8 8 8.8.8 8.8.8
ALMR X
FRAI X
FRA2 X
FRBl X
FRl32 X
CHWP X*
EXVA X
E X V B X
HGBRA X*
HGBRB X*
M M A X *
M M B X *
COMMENT
Test Outputs
Display Check
Energize Alarm Relay K3
Energize Fan Relay Al Kl
Energize Fan Relay A2 K2
Energize Fan Relay Bi K4
Energize Fan Relay 82 K5
Energize Cooler Water Pump K6
Enter Desired EXVA Position
Enter Desired EXVB Position
Energize Hot Gas Bypass Relay A
Energize Hot Gas 8ypass Relay B
Enter Desired Motormaster@ A Output Signal
Enter Desired Motormaster B Output Signal
32
Table 9 - Keypad Directory (cant)
TEST (cant)
During compressor test, compressors start and run for
10 seconds. Compressor service valves and liquid line valves must be open. Energize crankcase heaters 24 hours prior to performing compressor tests.
SUBFUNCTION
2 COMPRESSORS AND
UNLOADERS
KEYPAD ENTRY DISPLAY
C O M P
CPA1 X
CPA2 X*
CPA3 X*
COMMENT
Compressor and Unloader Test
Test Compressor Al
Test Compressor A2T
Test Compressor A3t
CPA4 X*
CPBl X
CPB2 x*
CPB3 X*
CPB4 X*
ULAl X
ULA2 X*
Test Compressor A4t
Test Compressor Bl
Test Compressor B2t
Test Compressor B3T
Test Compressor B4T
Energize Unloader Al T
Energize Unloader A2T
ULBl X
ULB2 X*
SCHEDULE
Energize Unloader Bl t
Energize Unloader B2t
T h e S c h e d u l e f u n c t i o n k e y CHD is used to configure the occupancy schedule The clock select subfunction
El can be used for unoccupied shutdown or unoccupied setback depending on the cooling set point control configuration. The Schedule function described is for clock 1, which is the internal clock. Password required for all subfunctions except override.
SUBFUNCTION 1 KEYPAD ENTRY
1 OVERRIDE
For example, to extend current occupied mode for 3 hrs, press:
I
ppii-j
I
DISPLAY
OVRD X
OVRD 3
I
COMMENT
Number of Override Hrs (0 - 4 Hrs)
Extended Occupied Time
2 CLOCK SELECT
/qzq
CLOCK XX Type of Clock Control
0 = No Clock, 1 = Clock 1 (Internal)
LEGEND
~~”
- Carrier Comfort Network
- Electronic Expansion Valve
M O P
- Maximum Operating Pressure
*Must be configured tlf a p p l i c a b l e .
33
To toggle between inputs (Yes/No) Press: Fi Fi
Table 9 - Keypad Directory
SCHEDULE (cant)
DISPLAY
PERIOD 1
OCC HH.MM
UN0 HH.MM
MON X
T U E X
WED x
THU X
FRl X
S A T X
SUN X
HOL X
4 PERIOD 2
COMMENT
Period 1 Time Schedule
O c c u p i e d T i m e
U n o c c u p i e d T i m e
M o n d a y F l a g
Tuesday Flag
Wednesday Flag
Thursday Flag
Friday Flag
Saturday Flag
Sunday Flag
Holiday Flag
/qH r i o 1 PERIOD 2 i m e S c h e d u l e
5 PERIOD 3 . . . 9 PERIOD 7
10 PERIOD 8
11 HOLIDAYS
~~ r i o 1 PERIOD 8 i m e S c h e d u l e
HOLIDAYS
DAT MM.DD
Define Calendar Holidays
H o l i d a y D a t e 1
New = Unassigned Holiday Date
DAT MM.DD
NN Holiday Date 30
For example: To enter July 4th holiday press: 07 04 01 q
. Display shows Jul 04 For further information on the Schedule function and its operation, refer to Schedule Function section on page 45.
SERVICE
To view and modify configurations, the password must be entered under the log on subfunction.
SUBFUNCTION
1 LOG ON AND LOG OFF
KEYPAD ENTRY r;lH
DISPLAY
L O G O N
COMMENT
Enter Password/Disable Password Protection
At this time, configurations may be modified. When finished viewing and/or modifying configur
LOG OFF
2 VERSION
EHTR
0
p-&q
E X I T L O G
VERSION x x x x x x x x c
4 l
X rtions, log out as follows:
Disable Password Protection
Logged Off/Enable Password Protection
Software Information
Version No. of Software (CESRXX)
Language Options
See legend on page 30
3 4
F.-’
I’ .
i j,
Fc,s;B,:
Table 9 - Keypad Directory (cant)
SERVICE (cord)
The next 3 subfunctions provide the ability to modify configurations Refer to separate Installation, Start-Up, and Service Instructions supplied with unit for further information on c h a n g i n g c o n f i g u r a t i o n s .
To change a configuration, enter the new configuration and press 4 while on the correct configuration.
SUBFUNCTiON
3 FACTORY
CONFIGURATION
KEYPAD ENTRY
Clt
DISPLAY
FACT CFG x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x
COMMENT
Factory Configuration Codes
Configuration Code 1
Configuration Code 2
Configuration Code 3
Configuration Code 4
Configuration Code 5
Configuration Code 6
4 FIELD
CONFIGURATION
5 SERVICE
CONFIGURATION ct
[It ct clt c lt
0t qt at qt clt
Cl+
Clt
p-&q
c lt c lt c l+ qt clt
clt
clt
Clt c lt
SRV CFG x x x x x x x x x x x x x x x x
REFRIG X
T D T Y P X
OPS x
LPS x
FANTYP X
SH X
M O P X
FLD CFG
EN0 X
B U S X
BAUD X
FLUID X
UNITS X
LANG X
NULA X
NULB X
HGB X
S E Q T X
SEQF X
OPS x
HEADM X
M M X
CSPTYP X
CRTYP X
E R T Y P X
L S T Y P X
RAMP X
LOCK X
CPC x
A d j u s t a b l e F i e l d C o n f i g u r a t i o n
CCN Element Address
CCN Bus Number
CCN Baud Rate
C o o l e r F l u i d S e l e c t
Display Unit Select
Display Language Select
No Circuit A Unloaders
No. Circuit B Unloaders
Hot Gas Bypass Select
L o a d i n g S e q u e n c e S e l e c t
Lead/Lag Sequence Select
Oil Pressure Switch Select
Head Pressure Control Method
Motormaster@ Select
C o o l i n g S e t P o i n t C o n t r o l S e l e c t
Cooling Reset Control Select
External Reset Sensor Select
Demand Limit Control Select
Ramp Load Select
Cooler Pump Interlock Select
Cooler Pump Control Select
Service Configurations
Configuration Code 7
Configuration Code 8
Refrigerant
Pressure Transducer Select
Oil Transducer Set Point
Low Pressure Set Point
F a n S t a g i n g S e l e c t
EXV Superheat Set Point
EXV MOP Set Point
3 5
Table 9 - Keypad Directory (cant)
SUBFUNCTION
1 RUN TIME
2 STARTS
KEYPAD ENTRY r;lm
1
2
1
DISPLAY
RUN TIME
HR X
HRA X
HRB X
S T A R T S
CY x
CYA X
CYB X
COMMENT
Run Time lnformation
Total Hrs Unit Has a Comp Operating
C i r c u i t A R u n T i m e
C i r c u i t B R u n T i m e
Starts Information
Cycles from Stage 0 to Stage 1
Circuit A Starts
Circuit B Starts
3 ALARM HISTORY I I 3 I lH4
Alarm Description ALARM X
ALARM X
ALARM X
J
>
SET POINT
To read a set point, go to proper subfunction and read desired set point To
LOCAL/ENABLE-STOP-CCN switch must be in LOCAL or STOP position,
SUBFUNCTION KEYPAD ENTRY
DISPLAY
c h a n g e a set point, enter new set point value, t h e n press
COMMENT
1 SET POINTS
SET POINT
CSPl x
J n i t S e t P o i n t
C h i l l e r F l u i d S e t P o i n t 1
2 RESET SET POINTS
ALARM X
ALARM X
CSP2 x
H S P A X
H S P B X
CRAMP X t
R E S E T
C R S T 2 X *
CREF2 X*
CRSTI X*
CREFI X*
Chiller F l u i d S e t P o i n t 2
Head
Pressure Set Point Circuit A
Head Pressure Set Point Circuit B
Pulldown Limit
Reset Set Points
Cooling Max Reset
Max Reset Occurs at X mA or Degree
Cooling Minimum Reset
Min Reset Occurs at X mA or Degree
3 DEMAND SET POINTS
4 DATE AND TIME
DEMAND
DLSl X*
DLS2 X*
DMAX X*
RMAX X*
DMIN X*
RMIN X*
SHED X”
DATE.TIME
DAY HR.MIN
MM.DD YR
36
Demand Set Points
Demand Switch 1 Set Point
Demand Switch 2 Set Point
4-20 mA Maximum Demand Limit
Max Demand Limit Occurs at X mA
4-20 mA Minimum Demand Limit
Minimum Demand Limit Occurs at X mA
CCN Loadshed Amount
Date, Time and Day of Week
Day 1 = Mon, 2 = Tues 7 = Sun
Hours are displayed in 24-hr time. Decimal point serves as colon.
Month.Day.Year.
When entering date, enter a decimal point between entries. Each entry must be two numbers.
i
STATUS FUNCTION - This function shows the rotating display, current status of alarm (diagnostic) codes, capacity stages, operating modes, chilled water set point, all measured system temperatures and pressures, superheat values, pressure switch positions, analog inputs, and switch inputs.
These subfunctions are defined on pages 37 and 38.
faults have been detected. Each fault is assigned a code number which is reported with the alarm. See Table 10 for code definitions. The codes indicate failures that cause the unit to shut down, terminate an option (such as reset) or result in the use of a default value as set point.
Up to 5 alarm codes can be stored at once. To view them in sequence, press mm to enter the alarm displays and then press q to move to the individual alarm displays. Press q after a code has been displayed. The meaning of the code scrolls across the screen. See Example 1
Example 1 - Reading Alarm Codes
K
E Y P A D
ENTRY
DISPLAY
RESPONSE
‘MvoEo;2;;5 p-jq
0 S T A G E S
2 ALARMS
2 A L A R M S
COMMENTS
Keypad has not been used for a t l e a s t 1 0 m i n u t e s . A l t e r n a t i n g summary display appears on screen
2 alarms detected
A L A R M 9 First alarm code
COOLER LEAVING
FLUID THERMISTOR
F A I L U R E
Explanation of alarm code
A L A R M 4 2
Second alarm code Cooler freeze protection
COOLER FREEZE
P R O T E C T I O N
Explanation of alarm code
When a diagnostic (alarm) code is stored in the display and the machine automatically resets, the code is deleted.
Codes for safeties which do not automatically reset are not deleted until the problem is corrected and the machine is switched to STOP, then back to LOCAL/ENABLE or CCN.
mbi (Modes) - The operating mode codes are displayed to indicate the operating status of the unit at a given time. See Table 10.
Table 10 - Operationat and Mode Display Codes
The operating modes are displayed by name or code number, to indicate the operating status of the unit at a given time. The modes are:
CODE 1 DESCRlPTlON
LOCAL OFF
CCN OFF
CLOCK OFF
LOCAL ON
Unit is off. LOCAL/ENABLE-STOP-CCN switch is in OFF position, or LOCAL/ENABLE-STOP-CCN switch may be in LOCAL position with external ON/
OFF switch in OFF position
I
Unit is off due to CCN network command. LOCAL/
ENABLE-STOP-CCN switch is in CCN position.
Unit is off due to internal clock schedule. LOCAL/
ENABLE-STOP-CCN switch is in LOCAL position.
Unit is on. LOCAL/ENABLE-STOP-CCN switch is in LOCAL position If external ON/OFF switch is used, i t w i l l b e i n O N b o s i t i o n .
CCN ON
Unit is on due to CCN command LOCAUENABLE-
STOP-CCN switch is in CCN position.
CLOCK ON
I
Unit is on due to internal clock schedule or occupied override function. LOCALIENABLE-STOP-
CCN switch is in LOCAL position.
Dual set point is in effect In this mode, unit continues to run in unoccupied condition, but leaving water set point is automatically increased to a higher
M O D E 7
level (CSP2 set Point is in SET function)
MODE 8
I
Temperature reset is in effect. In this mode, unit is using temperature reset to adjust leaving water set point upward, and unit is currently controlling to the modified set point. The set point can be modified based on return water, outdoor-air temperature or space temperature
MODE 9
MODE 10
MODE II
MODE 12
Demand limit is in effect. This indicates that cap a c i t y o f u n i t i s b e i n g l i m i t e d b y d e m a n d l i m i t c o n trol option Because of this limitation, unit may not be able to produce the desired leaving water temperature
L o a d l i m i t i s i n e f f e c t . T h i s i n d i c a t e s t h a t c a p a c i t y o f a system of units is being limited by a CCN loadshed command Due to this limitation, unit may not be able to produce the desired leaving water temperature.
Not aoalicable.
I I
Ramp load (pulldown) limiting is in effect. In this mode, the r&e at which leaving water temperature is dropped is limited to a predetermined value to prevent compressor overloading, See CRAMP set point in the
S E T f u n c t i o n i n T a b l e 9 T h e pulldown l i m i t c a n b e modified, if desired, to any rate from 2 F to 2 F
( lo to lo Q/minute
MODE 13
Timed override is in effect This is a 1 to 4 hour temporary override of the programmed schedule, forcing unit to occupied mode Override can be implemented with unit under LOCAL or CCN control
Override expires after each use saturated suction temperature is 20” F (11” C) for
’ water or 30” F (16” C) for brine or more below
leav-
MODE 14
1
Low cooler suction protection is in effect In this mode, circuit capacity is not allowed to increase if cooler ing fluid temperature, and saturated suction temperature is less than 32 F (0’ C). If these conditions
CCN - CarrierComfort Network p e r s i s t b e y o n d 1 0 m i n u t e s , c i r c u i t i s s h u t d o w n a n d fault code 44 or 45 is displayed.
use
To enter the MODES subfunction, depress MFI and the q key to determine if more than one mode applies. See Example 2
to
read current mode with expansion.
37
Example 2 - Reading Current Operating Modes
KEYPAD
ENTRY
I
DISPLAY
RESPONSE I
TUE 15:45
LOCAL ON
C O O L 1
0 A L A R M S
COMMENTS
Keypad has not been used for at least 10 minutes Rotating summary display appears on screen p-lH 2 MODES
There are 2 modes currently in effect
LOCAL ON
Unit is on by chiller on/off switch
M O D E 8 Temperature reset is in effect l-ii 1;;;;1 (Stage) - This subfunction displays the capacity stage number. See Tables 4A-4D for compressor loading sequence. To enter the STAGE subfunction, press p--&q and use the q to display the stage number.
Additional m provides the following information:
Percent of total unit capacity being utilized.
Percent of each circuit capacity being utilized.
Demand limit set point in effect (can be any value between 0% and 100%).
Load limit set point in effect. This is a CCN function for controlling operation of multiple units between 0% and
100% of total capacity of all units combined.
Status
of each compressor relay. When a compressor is on, the number of that compressor is displayed. If a compressor is off, a 0 is displayed. For example: In a given circuit, if compressors 1 and 3 are running, and 2 and 4 are not running, 0301 is displayed for that circuit.
Load/Unload factor for compressors. This factor is an indication of when a step of capacity is added or subtracted. Its value can range from slightly less than -1 .O
to slightly more than + 1 .O. When load/unload factor reaches + 1.0, a compressor is added. When the load/ unload factor reaches -1 .O, a compressor is subtracted.
If compressor unloaders are used, at -.6 a compressor is unloaded and at + .6, a compressor is loaded up.
mF[ (Set Point) - This subfunction displays leaving water temperature and leaving chilled water set point. If unit is programmed for dual set point, the chilled water set point currently in effect (either occupied or unoccupied) is displayed. If reset is in effect, the unit operates to the modified chilled water set point. This means the leaving water temperature may not equal the chilled water set point The modified chilled water set point can also be displayed in the
Status function. To enter the set point subfunction, depress mb[ and use the q to display modified leaving chilled water set point followed by leaving water set point and actual cooler leaving fluid temperature.
plays the readings at temperature sensing thermistors.
To read a temperature, enter Fi Fi , then scroll to desired temperature using the m key. See Table 9 for the order of readouts.
flH (Pressure) - This subfunction displays suction, discharge and net oil pressure at lead compressor of each circuit of unit.
m H (Analog Inputs) - This subfunction displays analog inputs, if any. Enter m Fi , then use the q
. The transducer supply voltage, 4-20 mA reset signal can be displayed. This is useful for problem diagnosis prior to using the test function.
m bi - This subfunction displays status
(ON/OFF) of input switch where applicable. Status of dual set point switch, and demand limit switches 1 and 2 can be displayed. This is useful for problem diagnosis prior to using the test function.
~~ (Outputs) - This function displays ON/OFF status of alarm relay, all fan relays, and chilled water pump relay. It also displays ON/OFF status of compressor unloaders (if used). The position of each EXV (in percent open) can be displayed.
TEST FUNCTION - The test function operates the diagnostic program. To initiate test function, the LOCAL/
ENABLE-STOP-CCN switch must be in STOP position.
To reach a particular test, enter its subfunction number, then scroll to desired test by pressing the ( key. Press
B to start a test. Press exit a test. Pressing the q or q or H to terminate or q key after a test has started advances system to next test, whether current test is operating or has timed out, Once in the next step, you may start test by pressing H or advance past it by pressing I)I .
While the unit is in test, you may leave test function and access another display or function by pressing appropriate keys. However, a component that is operating when another function is accessed remains operating. You must re-enter test function and press the ) key to shut down the component. Components with a timed operating limit time
out
normally even if another function is accessed.
Keypad entry riF[ allows the operator to make the following checks by using m :
LID display check. Propezisplay is 8.8.8.8.8.8.8.8 .
Operation of remote alarm.
Operation of condenser fans.
Operation of chilled water pump.
Operation of EXVs. To drive EXV fully open, enter m m m (100% open). To drive EXV fully closed, enter u (0% open).
c compressor unloader operational tests.
During compressor operational tests, compressor starts and runs for 10 seconds. Compressor service valves must be open. Energize crankcase heaters 24 hours prior to performing compressor tests.
Since test function checks only certain outputs, it is good practice to also check all inputs and outputs accessible through the status function. These are located at F\ F[ , m H, and mm (see Table 9). If keypad is not used for 10 minutes, unit automatically leaves test function and resumes rotating display. See Example 3.
38
.
Example 3 - Using Test Function
KEYPAD DISPLAY
ENTRY
I RESPONSE
C O M P
COMMENTS
Factory/field test of compressors subfunction of test function
Circuit A, Compressor 1A test
CPA 1 OFF
CPA 1 ON cl+
CPA 1 OFF
CPA 2 OFF
Pressing ENTR starts the test: when the compressor should be running the display shows CPA1 on
If the test is allowed to time out (10 seconds) the display will show CPA1 off
Pressing the down arrow key advances the system to Circuit A, compressor 2 test
NOTE: Once a compressor has been run using the EST function, it is not allowed to run again for 30 seconds.
E l
HISTORY FUNCTION - Keystrokes mb] and subsequent [ keystrokes display total unit run time and total run time for each circuit.
Keystrokes m m and subsequent m keystrokes display total unit starts and the total starts for each circuit.
Keystrokes Fi b[ and subsequent q keystrokes display the last 5 alarms along with a description of each alarm.
SET POINT FUNCTION - Set points are entered through the keypad. Set points can be changed within the upper and lower limits, which are fixed. The ranges are listed below.
Chilled Water Set Point
Water:
38 to 70 F (3.3 to 21 C)
Brine:
15 to 70 F (-9.4 to 21 C)
Pulldown Set Point
0.2 to 2.0 F (0.11 to 1.1 C)/min.
Reset Set Points
Maximum Reset Range:
0” to 20” F (0” to 11” C)
Maximum Reset Reference Range:
Return Fluid Reset 0” to 20” F
(0” to 11” C)
External Temperature Reset 20 to 125 F
(-6.6 to 51.6 C)
External Signal Reset 4 to 20 mA
Minimum Reset Reference Range:
Return Fluid Reset 0” to 20” F
(0” to 11” C)
External Temperature Reset 20 to 125 F
(-6.6 to 51.6 C)
External Signal Reset 4 to 20 mA
Demand Limit Set Points
Switch Input:
Step 1 - 0 to 100% Capacity Reduction
Step 2 - 0 to 100% Capacity Reduction
External Signal:
Maximum Demand Limit 4 to 20 mA
Minimum Demand Limit 4 to 20 mA
Set points are grouped in subfunctions as follows: a. The first value shown is the occupied chilled water set point.
b. The next value displayed depends on how the schedule function has been programmed. (See pages 45-
47.) If dual set point has been selected, the next set point after m has been pressed is the unoccupied chilled water set point. If single set point or inactive schedule has been selected in the schedule function, then when q is pressed, the display shows the modified chilled water set point.
c. The final value displayed when the q is pressed is the cooling ramp loading rate. This is the maximum rate at which the leaving chilled water is allowed to drop, and can be field set from 0.2 to 2.0 F
(. 11” to 1.1” C)/minute. This value is not displayed unless the function is enabled (see Adjustable Field
Configurations on page 45).
Reading and Channinrr Set Points - Example 4 shows how to read and change the chilled water set point. Other set points can be changed by following the same procedure.
Refer to Table 9 for the sequence of display of set points in each subfunction.
Example 4 - Reading
and
Changing
Chilled Water Set Point
KEYPAD
E N T R Y
DISPLAY
RESPONSE
C O M M E N T S
S E T P O I N T
CSPl 44.0
System set points
Present occupied chilled water set point is 44 0 F
CSPI 420
CSP2 44.0
CSP2 50.0
R E S E T
~~~~~~~h~!$w~cupied chilled water set point is 42 0 F
P r e s e n t u n o c c u p i e d c h i l l e d w a t e r set point is 44.0 F
Press the Fi ri F[ l a y shows new unoccupied chilled water set point is 50.0 F
Displays the maximum reset and minimum reset set points The minimum and maximum reference reset set points can also be displayed.
These set points are not accessible when reset type has been configured for NONE in the service function
Temperature Reset Based on Return Water TemDerature -
The control system is capable of providing leaving water temperature reset based on return water temperature. Because the temperature difference between leaving water temperature and return water temperature is a measure of the building load, return water temperature reset is essentially an average building load reset method.
Under normal operation, the chiller maintairis a constant leaving water temperature approximately equal to chilled water set point. As building load drops from 100% down to
O%, entering cooler water temperature drops in proportion to load. Thus, temperature drop across the cooler drops from a typical 10 F (5.5 C) at full load to a theoretical 0” F (0” C) at no load. See Fig. 4.
At partial load, leaving chilled water temperature may be lower than required. If this is allowed to increase (reset), the efficiency of the chiller increases. Amount of reset can be defined as a function of cooler temperature drop, as shown in Fig. 4. This is a simple linear function that requires 4 pieces of input data for the set function:
39
I. Maximum Reset Amount (CRST2) - allowable range
0” to 20” F (0” to 11” C). This is maximum amount leaving chilled water set point is to be increased.
2. Maximum Reset Reference (CREF2) - allowable range
0” to 20” F (0” to 11” C). This is the cooler temperature drop at which reset reaches its maximum value.
3. Minimum Reset Amount (CRSTl) - allowable range
0” to 20” F (0” to 1 I” C). This is minimum amount leaving chilled water set point is to be increased when reset is initiated.
4. Minimum Reset Reference (CREFl) - allowable range
0” to 20” F (0” to 11” C). This is the cooler temperature drop at which reset is at its minimum value. (Reset begins here .)
NOTE: Reset set points are not accessible unless the reset function is enabled first. This is done as a field configuration. Select one of the 3 choices for type of reset: Return
Fluid Reset, External Temperature Reset, or 4-20 mA External Signal (with a loop isolator) Reset.
If dual set point control is enabled (see Field Wiring section on page 7 1), the amount of reset is applied to whichever set point is in effect at the time.
Example 5 demonstrates how to activate reset. Example
6 demonstrates how to change the type of reset. Assume that reset is to be based on return water temperature, the desired reset range is to be 2” to 10” F (1” to 5.5” C) and full load is a 10” F (5.5” C) drop across the cooler. See
Fig. 4.
Activating reset based on external temperature or
4-20 mA signal is done the same way, except the reference set point range is 20” to 125” F (-6.6” to 5 1.6” C), or 4 to
20 mA depending on which method was selected at the field configuration step.
f73c=)
-- /
35.3
Example 5 - Using Return Water
Temperature Reset
KEYPAD
ENTRY
DISPLAY
RESPONSE
COMMENTS
FLD CFG
C S P T Y P X
CRTYP 0
C R T Y P
S E T P O I N T
CPSl 44.0
CPSl 45 6
R E S E T
1
C R S T 2 0 0
C R S T 2 1 0 0
CREF2 0.0
CREF2 1.0
CRSTI 0 0
CRSTI 2.0
CREFl 0.0
CREFl 8 0
F i e l d c o n f i g u r a t i o n subfunction of s e r v i c e f u n c t i o n
S c r o l l p a s t s i n g l e / d u a l
Display shows no reset type has been selected
Return water temperature is selected and activated
System set points
P r e s e n t o c c u p i e d c h i l l e d water set point
Enter new chilled water set point
Reset set points
F;li;g maximum reset
0
Cooling maximum reset is 10 F
Cooling maximum reset reference is 0” F
Cooling maximum reset reference is 1 F
Cooling minimum reset is 0” F
Cooling minimum reset is 2 F
Cooling minimum reset reference is 0” F
Cooling minimum reset reference is 8 F
8
7
IO
9
18
16
MIN RESET REFERENCE (CREF
I
) q 13
100
8 0
6 0
2 3 4 5 6 7
RESET REFERENCE TEMPERATURE (COOLER EWT-LWT)
Fig. 4 - Cooling Return W a t e r Reset
40
8 9 IO
0
10 -
Y-
8-
?-
18
16
2-
I -
O-
8
6
Temperature Reset Based on External Temperature - If desired, temperature reset can be based on an external temperature, such as space or outdoor-air temperature. This requires a thermistor (TlO, Part No. 30GB660002) located in the space or outdoor air and wired to terminals as follows
(also see Field Wiring section on page 71):
4 in/4 out
Module - 57-15 and J7-16.
At the field configuration step, select external temperature reset by entering q when CRTYP 0 appears. Then enter set points as described previously in Example 5. See
Fig. 5.
Temperature Reset Based on 4-20 mA Signal- If desired, temperature reset can be based on a 4-20 mA signal. For proper connections, refer to Field Wiring section on page
71 and Fig. 6.
At the field configuration step, select 4-20 mA reset by entering q when CRTYP 0 appears. Then enter set points as described previously in Example 5. See Fig. 7,
Demand Limit, 2-Stage Switch Control - This control has been designed to accept demand limit signals from a building load shedding control. The demand limit function provides for 2 capacity steps. The keypad is used to set the 2 demand limit set points, which range from 100 to 0% of capacity. Capacity steps are controlled by 2 field-supplied relay contacts connected to the designated chiller terminals.
(See Field Wiring section on page 7 1 and Fig. 6.)
Example 6 - Changing Reset Type
To change type of reset, first log on as shown in
Table 11. Also refer to Set Point Function section, page 39, for information on entering reset set points using reset feature.
KEYPAD
ENTRY
DISPLAY
RESPONSE
FLD CFG
C S P T Y P 0
CRTYP 0
CRTYP 1
CRTYP 2
CRTYP 3
CRTYP 0
COMMENTS
F i e l d c o n f i g u r a t i o n s u b f u n c t i o n o f s e r v i c e f u n c t i o n
S c r o l l p a s t s i n g l e c o o l i n g set point
No reset has been s e l e c t e d
Return water temperature reset is selected and activated
Reset type is changed to space or outdoor-air temperature reset and activated
Reset type is changed to
4-20 mA signal reset and activated
Reset is deactivated
RESET REFERENCE
TEMP
ERATUR
E
(OUTDOOR AIR 1
OR
SPACE TEMP
Fig. 5 - Cooling External Temperature Reset
4 1
n
P O I N T NUMBER OF
FIRST
CHANNEL
--e-------1-
__-----a ---mm-
--
EKE
LIMIT
(ALARM C O D E 3 1 2
(MODE 91
_------
__---- - -
___---c---
_ _ - - - - .
---se
----
D
A
B d
H c 4
4 nw/4 OUJJU
d
In AOt
= RET
P W R
I z
“1
’
r A O +
DO+
- - - - - _ - - - - - - - -
‘-+p--------
(MODE 71
----
----__e-
RFt!EF
(ALARM COOE 21) 301
(MODE El f
__----a-
__----
LB---------
- -
LEGEND
C O M M - Communications Bus
PWR
- P o w e r
SW
- Switch
N O T E : F o r s p e c i f i c c o n n e c t i o n p o i n t s , see Fig. 24 - 29.
Fig 6 - 4 IN/4 OUT Options Module Wiring for Reset, Demand Limit, an! Dual Set Point
Table 11 - Service Functions
To view and modify configurations, the password must be entered under the log on subfunction.
SUB-
F U N C T I O N
I
K E Y F A D
E N T R Y
DISPLAY
COMMENT
P A S S W O R D
Enter
Password/
Disable Password
LOGGED ON Logged On
NOTE: Configurations may be modified at this time. When finished viewing and/or modifying configurations, log out as follows:
L O G G E D O N
L O G O F F
EXIT LOG
V E R S I O N x x x x x x x x
X
Disable Password
Protection
Logged Off/
Enable Password
Protection
Software
Information
Version No of Software
Language Options
To use Demand Limit, first enable loadshed, then enter demand limit set points. See Example 7A. Closing the first stage demand limit contact puts unit on the first demand limit level, that is, the unit does not exceed the percentage of capacity entered as demand limit stage 1. Closing contacts on second-stage demand limit relay prevents unit from exceeding capacity entered as demand limit stage 2. The demand limit stage that is set to the lowest demand takes priority if both demand limit inputs are closed.
The demand limit function must be enabled in order to function and may be turned off when its operation is not desired. The demand limit relays can, in off condition, remain connected without affecting machine operation.
-Demand Limit, 4-20 mA Signal - The controls can also accept a 4-20 mA signal for load shedding. Input for the signal are terminals shown below:
Externally powered (loop isolator required)
Positive lead to 57-5 - 4 In/4 Out Module
Negative lead to 57-6 - 4 In/4 Out Module
Internally powered
Positive lead to J7-6 - 4 In/4 Out Module
Negative lead to 57-7 - 4 In/4 Out Module
See Field Wiring section on page 71 and Fig. 6.
At field configuration step, select 4-20 mA loadshed by entering q when the LSTYP 0 display appears. See
Example 7B. Then enter set points as follows. In this example, set points are coordinates of the demand limit curve shown in Fig. 8.
42
Q
16
8
6
0
0
Example 7A - Using Demand Limit
(First Log On as Shown in Table 11)
KEYPAD
ENTRY
DISPLAY
RESPONSE
FLD CFG
ERTYP 0
LSTYP 0
L S T Y P 1
DEMAND
DLSl 100
DLSl 60
D L S 2 1 0 0
DLS2 40
COMMENTS
Field configuration subfunction of service function
Scroll past other elements i n t h e s u b f u n c t i o n
Loadshed is not enabled
Loadshed is now enabled for 2-stage switch control
Demand Limit set points subfunction of set point f u n c t i o n
Loadshed 1 currently set a t 1 0 0 %
Loadshed reset to 60%
Loadshed 2 currently set a t 1 0 0 %
Loadshed 2 reset to 40%
To Disable Demand Limit:
KEYPAD
ENTRY
DISPLAY
RESPONSE
FLD CFG
E R T Y P 0
L S T Y P 1
L S T Y P 0
COMMENTS
I
Field configuration subf u n c t i o n o f s e r v i c e f u n c t i o n
Scroll past other elements i n t h e s u b f u n c t i o n
Loadshed is enabled for
2-stage switch control
Loadshed is now disabled
NOTE: Select 3 for Carrier comfort Network (CCN) load limiting
Select 4 for CCN demand limiting.
16 18
2 4 6 8
IO
12 14
RESET REFERENCE SIGNAL (4 -20 MA INPUT)
Fig. 7 - 4-20 mA Cooling Temperature Reset
Example 7B - Using Demand Limit (4-20 mA)
(First Log On As Shown in Table 11)
KEYPAD
ENTRY ppiq
Cl
MH
DISPLAY
RESPONSE
FLD CFG
E R T Y P 0
LSTYP 0
L S T Y P 2
DEMAND
D M A X 1 0 0
D M A X 9 0
RMAX 20
R M A X 1 5
DMIN 0
DMIN 20
RMIN 4
RMlN 6
COMMENTS
F i e l d c o n f i g u r a t i o n s u b f u n c t i o n of service function
Scroll past other elements in t h e s u b f u n c t i o n
Loadshed is not enabled
Loadshed is now enabled for 4-20 mA signal control
D e m a n d L i m i t s e t p o i n t s
Maximum demand limit is 100%
Maximum demand limit is 90%
Maximum demand limit reference is 20 mA
Maximum demand limit reference is 15 mA
Minimum demand limit is 0%
Minimum demand limit is 20%
Minimum demand limit reference is 4 mA
Minimum demand limit reference is 6 mA
2 0
4 3
M A X D E M A N D
KIMAX)
= 90
Reading and Changing Time Displav - Time is entered and displayed in 24-hour time. The day of the week is entered as a number.
1 = Mon, 2 = Tue, 7 = Sun, etc.
m Kev is used as the colon when entering time. See Ex-
I ample 8.
Example 8 - Setting Time of Day and
Day of Week
KEYPAD
ENTRY
DISPLAY
RESPONSE
T I M E
MON 1600
TUE 13 05
JAN 01 90
APR 15 90
COMMENTS
T i m e d i s p l a y s u b f u n c t i o n o f s e t p o i n t f u n c t i o n
Current setting is
Monday, 4:00 p.m
New setting of
Tuesday, I:05 p m is entered and displayed
Current date is
Jan. 1, 1990
New setting
A p r i l 15, 1990 is entered and displayed
SERVICE FUNCTION - This function allows the technician to view and input configuration data. Factory configuration data, field configuration data and service configuration data may be viewed or entered through the keypad and display module. See Table 9 for a complete listing of configurable items. Whenever a processor module is replaced in the field, the complete list of configuration codes must be entered.
DEMAND
LlMlT SIGNAL
(4-20
MA INPUT)
Fig. 8 - 4-20 mA Demand Limiting
Logging On/Longing Off - The service function is password protected. Therefore, to gain entry to this function, allows the technician to view, change or enter configuration codes. To log off, perform the following keystrokes: word protected.
Software Information - Fi F/VI displays the version number of the software that resides in the processor module. Press m a second time to display the language options that are available in the field configuration group.
Table 11 s
Factorv Configuration Codes -mF[ allows entry into the factory configuration subfunction. Under this subfunction, there are 6 groups of configuration codes that are downloaded at the factory. Each group is made up of 8 digits. If processor module is replaced in the field, these 6 groups of configuration codes must be entered through the keypad and display module. Factory configuration codes (groups 1 through
6) that apply to the particular Flotronic’” II chiller being serviced are found on a label diagram located inside the control box cover. See Table 12 for a summary of factory configuration subfunction keystrokes.
44
Table 12 - Factory Configuration Keystrokes
To change a configuration enter the new configuration and press q while on the correct configuration.
S U B -
F U N C T I O N
3 FACTORY
C F G
DISPLAY
F A C T CFG
COMMENTS
F A C T O R Y
CONFlGURATlON
C O D E S
CJz;;g;ration
x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x
Configuration
C o d e 3
Configuration
C o d e 4
5 %FE
S R V C F G x x x x x x x x x x x x x x x x
S E R V I C E
CONW;;T’ON
Adiustable Field Configurations - After logging on, press ri H to enter subfunction. The subfunction allows operation of the chiller to be customized to meet the particular needs of the application. The chiller comes from the factory preconfigured to meet the needs of most applications.
Each item should be checked to determine which configuration alternative best meets the needs of a particular application. See Table 13 for factory loaded configuration codes and alternative configurations.
If processor module is replaced, the replacement module is preloaded with factory default configuration codes. Each configuration code must be checked and, if necessary, reconfigured to meet needs of the application. See
Table 13 for pre-loaded service replacement configuration codes.
Service Configuration Codes - Press r;lH to enter the service configuration subfunction. The first 2 items under this subfunction are 2 groups (8 digits each) of configuration codes that are downloaded at the factory. If processor module is replaced in the field, the 2 groups of configuration codes must be entered through the keypad and display module. The 2 groups of configuration codes (groups 7 and
8) that apply to the unit being serviced can be found on a label diagram inside the control box cover. See Table 12 for keystroke information to enter configuration codes 7 and 8.
SCHEDULE FUNCTION - This function provides a means to automatically switch chiller from an occupied mode to an unoccupied mode, When using schedule function, chilled water pump relay must be used to switch chilled water pump on and off. Connections for chilled water pump relay are:
TB3-3 and TB3-4 (040-210 and associated modular units) or TB5-3 and TB5-4 (225, 250, and 280 units). The chilled water pump relay starts chilled water pump but compressors do not run until remote chilled water pump interlock contacts are between TB6-1 and TB4-2 on 30GN040-210 and associated modular units, or between TB5-1 and TB5-2 on 3OGT225, 250, and 280 Flotronic” units are closed and leaving chilled water temperature is above set point. If a remote chilled water pump interlock is not used, the first compressor starts (upon a call for cooling) approximately one minute after chilled water pump is turned on.
45
Table 13 - Adjustable Field Configurations
FIELD CONFlGURATlON
ITEM AND CODES
FACTORY
CONFF$ikTlON
CCN element address
(Entered by CCN Technician)
CCN Bus Number
(Entered by CCN Technician)
CCN Baud Rate
(Entered by CCN Technician)
Cooler Fluid Select
1 = Water (38 to 70 F
[3.3 to 21 C] Set Point)
2 = Medium Brine (15 to 70 F f-9 to 21 C] Set Point)
Display Unit Select
0 = English
1 = Metric SI
Display Language Select
1 = English
No. Circuit A Unloaders
0 = No Unloaders
1 = One Unloader
2 = Two Unloaders
No. Circuit B Unloaders
0 = No Unloaders
1 = One Unloader
2 = Two Unloaders
Hot Gas Bypass Select
0 = N o V a l v e
Loading Sequence Select
1 = Equal Circuit Loading
2 = Staged Circuit Loading
Lead/Lag Sequence Select
1 = Automatic
Oil Pressure Switch Select
0 = Not Used
1 = Air Cooled
Head Pressure Control Type
0 = Not Used
1 = Air Cooled
Head Pressure Control Method
1 = EXV Controlled
2 = Set Point Control for
Both Circuits
3 = Set Point Control for
Circuit A; EXV Control for Circuit B
4 = Set Point Control for
Circuit B; EXV Control for Circuit A
C o o l i n g Set Point
Control Select
0 = Single Set Point Control
1 = External Switch
Controlled Set Point
2 = Clock Controlled
Set Point
Cooling Reset
0 = No Reset
Control Select i = Return Fluid Reset
2 = External Temperature
Reset -
3 = 4-20 mA Controlled
Reset
External Reset Sensor Select
0 = Thermistor Connected to
O p t i o n s M o d u l e
1 = Obtained Through CCN
Demand Limit Control Select
0 = No Demand Limiting
1 = Two External Switch Input
2 = External 4-20 mA Input
3 = CCN Load Limiting
(Multi-Unit)
4 = CCN Loadshed Interface
Ramo Load Select
~P@os~dol~ntrol)
1 = Enabled
Cooler Pump Interlock Select
0 = No Interlock
1 = With Interlock
Cooler Pump Control Select
0 = Not Controlled
1 = ON/OFF Controlled
EE
L E G E N D
- Carrier Comfort Network
- Electronic Expansion Valve
*And associated modular units
001
0 0 0
9 6 0 0
= Standard Models
I = Brine Models
0
I = 30GN190-HO*;
= 30GN040-170*
) =
30GT225,250,280
30GN040-070,
190-210';
30GT225,250,280
= 30GN080-170*
0
0
0
0
0
0
SERVICE
IEPLACEMENT
C O D E
001
0 0 0
9 6 0 0
1
1
0
0
0
1
0
0
0
1
1
0
0
0
0
0
0
0
The schedule function can be programmed for inactive, single set point, or dual set point operation.
When schedule is configured for inactive, chilled water pump relay remains energized continuously but is not used since chiller is usually controlled by remote chilled water pump interlock contacts.
When unit is configured for single set point operation, chilled water pump relay is energized whenever chiller is in occupied mode regardless of whether chiller is running. When chiller is in unoccupied mode, chilled water pump relay is not energized.
When unit is configured for dual set point, chilled water pump relay is energized continuously, in both occupied and unoccupied modes. Occupied mode places occupied chilled water set point into effect; unoccupied mode places unoccupied chilled water set point into effect.
The schedule consists of from one to 8 occupied time periods, set by the operator. These time periods can be flagged to be in effect or not in effect on each day of the week. The day begins at 00 .OO and ends at 24.00. The machine is in unoccupied mode unless a scheduled time period is in effect, If an occupied period is to extend past midnight, it must be programmed in the following manner: occupied period must end at 24:OO hours (midnight); a new occupied period must be programmed to begin at 0O:OO hours.
NOTE: This is true only if the occupied period starts at
0O:OO (midnight). If the occupied period starts at a time other than midnight, then the occupied period must end at
0O:OO hours (midnight) and new occupied period must be programmed to start at 0O:OO in order for the chiller to stay in the occupied mode past midnight.
The time schedule can be overridden to keep unit in occupied mode for one, 2, 3 or 4 hours on a one-time basis.
See Example 9.
All subfunctions of schedule function are password protected except the override subfunction, 17 b[ . Password entry into subfunctions f;l b[ through m m b[, is done through service function. See page 44, logging on/ logging off.
Figure 9 shows a schedule for an office building with the chiller operating on a single set point schedule. The schedule is based on building occupancy with a 3-hour off-peak cool-down period from midnight to 3 a.m. following the weekend shutdown. To learn how this sample schedule would be programmed, see Example 9.
NOTE: This schedule was designed to illustrate the programming of the schedule function and is not intended as a recommended schedule for chiller operation.
Example 9 - Using
the
Schedule Function
DISPLAY
O V R D 0
O V R D 3
No schedule override in effect
3 hours override in effect
Override cancelled
O V R O 0
C L O C K 0
C L O C K 1
C L O C K 6 5
Schedule function is inactive
Schedule function is enabled through local unit clock
Schedule function is enabled throuah CCN clock 65
PERIOD 1
Define schedule period 1
Start of occupied time
For this example, first period should stat-t here
/;tntnnr$ht) so no entry
UN0 00.00
Start of unoccupied time
(end of period) For this
&xampl& period 1 should end at 3:00 a m.
Period 1 ends at 3:00 a m
M O N N O
M O N Y E S
TUE YES
T U E N O
Monday is now flagged no for oeriod 1 To out oeriod I into’ effect on M&day,
Monday must be flagged
Yes
Monday is now fla period 1 to be in e a ged for ect
For this example, period 1 is to be in effect on Monday only All other days must be checked to be sure that thev are flagged no. If any day ii flagged yes, change to no
Tuesday is now flagged no for period 1
P E R I O D 2 Define schedule period 2 occ 00 00 Start of occupied time
C$uo$e;;me will start occ 7 00
UN0 00.00
UN0 18 00
M O N N O
MON YES
T U E N O
TUE YES
W E D Y E S
W E D N O
Start of unoccupied time
(end of period) For this example, period 2 should end at 18:00 (6:00 p m )
Period 2 ends at 18:OO
(6:00 p m )
Monday is now flagged no for period 2 To put period 2 into effect on Monday,
Monday must be flagged yes
Monday is now flagged for period 2 to be in effect
Tuesay is now flagged no for period 2 To put period 2 into effect on Tuesday,
Tuesday must be flagged yes
Tuesday is now flagged for period 2 to be in effect
For this example, period 2 is to be in effect only on
Monday and Tuesday
All other days must be checked to be sure that they are flagged no. If a day is flagged yes, change to no
Wednesday is now flagged no for period 2
CCN - Carrier Comfort Network
Example 9 continued next page.
4 6
Example 9 - Using the Schedule Function (cant)
KEENYTPRAYD
PROGRAMMING PERIOD 3:
I
D I S P L A Y
COMMENT
P E R I O D 3 occ 00 a0
Define schedule period 3
Start of occupied l i m e
Tyo$e;;rne will start occ 7 00
UN0 00 00
UN0 21 30
M O N N O
Start of unoccupied time
(end of period 3). For this example, period 3 should end at 21:30 (9:30 p m )
Period 3 ends at 22:30
(9:30 p m )
Check to be sure that
Monday and Tuesday are flagged for period 3
TUE NO
W E D N O
W E D Y E S
T H U R N O
Wednesday is flagged no, change to yes
W e d n e s d a y i s n o w flagged yes for period 3
Check to be sure that all other days are flagged no
FRI NO
SAT NO
S U N N O
Period 4 and 5 can be programmed in the same manner, flagging Thursday and Friday yes for period 4 and Saturday yes for period 5 a For this example, periods 6, 7, and 8 are not used: they should be programmed OCC 00.00, UN0
00.00.
NOTE: When a day is flagged yes for 2 overlapping periods, occupied time will take precedence over unoccupied time. Occupied times can overlap in the schedule with no consequence.
To extend an occupied mode beyond its normal termination for a one-time schedule override, program as shown below:
Holidav Schedule - Press 171 ri b[ to schedule up to
30 holiday periods. All holidays are entered with numerical values. First, the month (01 to 12), then the day (01 to 3 l), then the duration of the holiday period in days.
Examples: July 24 is 07.04.01.
Dee 25 - 26 is 12.25.02
If any of the 30 holiday periods are not used, the display shows NEW.
See Example 10.
Example 10 - Holiday Schedule Function
E N T E R
D I S P L A Y
H O L I D A Y
JAN01 02 (Includes Jan Ist and 2nd)
APR17 01 (Includes April 17th)
MAY21 01 (Includes May 21 st)
JUL03 01 (Includes July 3rd)
JULO4 01 (Includes July 4th)
SEP07 01 (Includes Sep 7th)
NOV26 02 (Includes Nov 26th and 27th)
DEC24 02 (Includes Dee 24th and 25th)
DECBO 02 (includes Dee 30th and 3lst)
N E W
MAY25 01 (Includes May 25th)
N E W
N E W
N E W
N E W
NEW (30TH HOLlDAY)
NEW indicates a holiday that has not been assigned yet.
YEC SAT IlJh
-
#30-G3 v
oo-
I -
2 -
3 -
4 -
5 -
6t-
8 -
9 -
IO -
II -
I2 -
I3 -
14 -
I5 -
I6 -
I7 -
18 -
1 9 -
20 -
21 -
PERIOD
1 I
‘EYo[
‘ERIO
3 m OCCUPIED
-
I UNOCCUPIED
Fig. 9 - Sample Time Schedule
47
TROUBLESHOOTING
The FlotronicTY II control has many features to aid the technicians in troubleshooting a Flotronic II Chiller. By using keypad and display module and status function, actual operating conditions of the chiller are displayed while unit is running. Test function allows proper operation of compressors, compressor unloaders, fans, EXVs and other components to be checked while chiller is stopped. Service function displays how configurable items are configured. If an operating fault is detected, an alarm is generated and an alarm code(s) is displayed under the subfunction m I;;;;] , along with an explanation of the fault. Up to 5 current alarm codes are stored. For checking specific items, see Table 9.
Checking
Display
Codes
- To determine how machine has been programmed to operate, check diagnostic information (( w ) and operating mode displays (/ Fi ).
If no dismay annears, follow procedures in Control Modules section+onlpage 64. If display is working, continue as follows:
1. Note all alarm codes displayed, F\ bi .
2. Note all operating mode codes displayed, MH .
3. Note leaving chilled water temperature set point in effect and current leaving water temperature, MFI .
If machine is running, compare the “in effect” leaving water temperature set point with current water temperature. Remember, if reset is in effect, the values may be different because machine is operating to the modified chilled water set point, If current temperature is equal to set point, but set point is not the one desired, remember that if dual set point has been selected in the schedule function, there are 2 set points to which the machine can be operating. Check the programming of schedule function to see if occupied or unoccupied set point should be in effect.
Unit Shutoff -
To shut unit off, move LOCAL/
ENABLE-STOP-CCN Switch to STOP position. Any refrigeration circuit operating at this time continues to complete the pumpout cycle. Lag compressors stop immediately, and lead compressors run to complete pumpout.
Complete Unit Stoppage
- Complete unit stoppage can be caused by any of the following conditions:
1
1. Cooling load satisfied
2. Remote ON/OFF contacts open
3. Programmed schedule
4. Emergency stop command from CCN
5. General power failure
6. Blown fuse in control power feed disconnect
7. Open control circuit fuse
8. LOCAL/ENABLE-STOP-CCN switch moved to STOP position
9. Freeze protection trip
10. Low flow protection trip
11. Open contacts in chilled water flow switch (optional)
12. 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 STOP position. Unit cannot start if these contacts are open. If they open while unit is running, unit pumps down and stops.
13. Cooler entering or leaving fluid thermistor failure
14. Low transducer supply voltage
15. Loss of communications between processor module and other control modules
16. Low refrigerant pressure
Single Circuit Stoppage
- Single circuit stoppage can be caused by the following:
1 Low oil pressure in lead compressor
2. Open contacts in lead compressor high-pressure switch
3. Low refrigerant pressure
4. Thermistor failure
5. Transducer failure
6. Ground fault in lead compressor indicator (indicator is field-supplied on 040-060, 070 [60 Hz], 080- 110, and associated modular units)
7. High suction superheat
8. Low suction superheat
9. Lead compressor circuit breaker trip+ Stoppage of one circuit by a safety device action does not affect other circuit. When a safety device trips on a lead compressor, circuit is shut down immediately and EXV closes.
10. Ground fault for any circuit compressor (130-210,225,
250, 280, and associated modular units).
Lag Compressor Stoppage
- Lag compressor stoppage can be caused by the following:
1, Open contacts in high-pressure switch
2. Compressor ground fault (indicator is field-supplied on
040-060, 070 [60 Hz], 080- 110, and associated modular units)
3. Compressor circuit breaker trip
4. Not required to run to meet cooling load requirement
If stoppage occurs more than once as a result of any of the above safety devices, determine and correct the cause before attempting another restart.
Restart Procedure -
After cause for stoppage has been corrected, restart is either automatic or manual, depending on fault. Manual reset requires that LOCAL/ENABLE-
STOP-CCN switch be moved to STOP position, then back to original operating position. Some typical fault conditions are described below. For a complete list of fault conditions, codes, and reset type, see Table 14.
POWER FAILURE EXTERNAL TO THE UNIT - Unit restarts automatically when power is restored.
Typical Stoppage Faults and Reset Types
Chilled Water, Low Flow
Chilled Water, Low Temperature
Chilled Water Pump Interlock
Control Circuit Fuse Blown
High-Pressure Switch Open
Low Refrigerant Pressure
Low Oil Pressure
Discharne Gas Thermostat Open
Manual reset
Auto reset first time, manual if repeat
Manual reset
Unit restarts automatically when power is restored
Manual reset
Auto reset first time, then manual if within same day
Manual reset
Manual reset
48
Alarm Codes -
Following is a detailed description of each alarm code error and possible cause. Manual reset of an alarm is accomplished by moving LOCAWENABLE-
STOP-CCN Switch to STOP position, then back to LO-
CAL or CCN position. See Table 14 for listing of each alarm code.
Code 0
No alarms exist
Codes 1 - 8 Compressor failure
If DSIO-LV or -EXV relay module control relay feedback switch or signal is sensed as open during operation of a compressor, microprocessor detects this and stops compressor, energizes alarm light, and displays a code of I, 2,
3, 4, 5, 6, 7, or 8 depending on the compressor. Compressor locks off; to reset, use manual reset method.
If lead compressor in a circuit shuts down, the other compressors in the circuit stop and lock off. Only the alarm mode for lead compressor is displayed.
The microprocessor is also programmed to indicate compressor failure if feedback terminal on DSIO-LV or -EXV
53 terminal strip receives voltage when compressor is not supposed to be on.
Table 14 - Alarm Codes
DISPLAY
1
0
2 , 3 , 4
5
6, 7, 8
9
1 0
1 9
2 0
2 1
2 5
2 6
2 7
2 2
2 3
2 4
2 8
2 9
3 0
31
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
4 0
4 1
4 2
4 3
4 4
4 5
4 6
4 7
D E S C R I P T I O N
No Alarms Exist
Compressor Al failure
Compressor A2, A3, A4 failure
Compressor Bl failure
Compressor B2; 83, 84 failure
Leaving water thermistor failure
Entering water thermistor failure
Compressor Al sensor failure
Compressor Bl sensor failure
Reset thermistor failure
Discharge pressure transducer failure, circuit A
Discharge pressure transducer failure, circuit B
Suction pressure transducer failure, circuit A
Suction pressure transducer failure, circuit B
Oil pressure transducer failure, circuit A
Oil pressure transducer failure, circuit B
Transducer supply voltage low
Interlock switch oaen
4-20 mA reset input failure
4-20 mA demand limit failure
Loss of communication with DSIO-LV
Low refrigerant pressure circuit B oil pressure circuit A oil pressure c i r c u i t B
Cooler freeze protection
Low cooler water flow
Low suction temperature circuit A
Low suction temperature circuit B
High suction superheat circuit A
High suction superheat circuit B
4 8
4 9
50
5 1
5 2
Low suction superheat circuit A
Low suction superheat circuit B
Illegal configuration
Initial configuration required
Emergency stop by CCN command
ES
L E G E N D
- Compressor Protection Control Module
- Power Supply
ACTION TAKEN
B Y C O N T R O L
-
Circuit A shut down
Compressor shut down
Circuit B shut down
Compressor shut down
Unit shut down
Unit shut down
Circuit A shut down
Circuit B shut down
Normal set point used
Circuit A shut down
Circuit B shut down
Circuit A shut down
Circuit B shut down
Circuit A shut down
Circuit B shut down
Unit shut down
Unit shut down
Normal set point used
Demand limit ignored
Unit shut down
Loss of communication with DSIO-EXV
Loss of communication with 4 In/4 Out module
Not used
Low refrigerant pressure circuit A
I
Unit shut down
Unit shut down
-
Circuit A shut down
Circuit B shut down
Unit shut down
Unit shut down
C K T
PUMPDOWN
-
N o
N o
Yes
-
N o
Yes
Yes
N o
N o
N o
N O
N o
N o
N o
N o
N o
Yes
N o
Yes
Yes
Yes
Yes
Yes
N o
N o
N o
N o
N o
N o
N o
N o
-
Manual
Auto.
A u t o
A u t o
Auto.
Auto.
A u t o
A u t o
M a n u a l
A u t o
A u t o
Auto.
Manual
Manual
Manual
A u t o
A u t o
A u t o
A u t o
A u t o
I
A u t o
A u t o
*
-
*
Manual
M a n u a l
Manual
Manual
Manual
Manual
PROBABLE CAUSE
-
High-pressure switch trip, discharge gas thermostat trip, or wiring error
CPCS Ground Fault Protection
Thermistor or transducer failure or wiring error.
Transducer failure or wiring error
Unit voltage low or PSI faulty
Chilled water pump inoperative
I
Wiring error or improper or faulty module address code
-
Low refrigerant charge, plugged filter drier, faulty EXV
Low refri erant charge, plugged filter drier.
~, fau tv EXV
3
Faulty EXV, transducer, or thermistor
Faultv EXV, transducer, or thermistor.
Low oil level, circuit breaker trip, faulty EXV, crankcase heater, or Pressure Transducer
Low oil level, circuit breaker trip, fautty EXV, crankcase heater, or oressure transducer
Low water flow or faulty thermistor
Chilled water pump failure or faulty thermistor
Faulty EXV or thermistor
Circuit A shut down after 10 minutes
Circuit B shut down afler 10 minutes
Circuit A shut down
N o
N o
M a n u a l Faulty EXV or thermistor
Circuit B shut down
Circuit A shut down
Circuit 6 shut down
Unit cannot start
Unit cannot start
Unit shut down
Yes
Yes
Yes
Yes
-
-
Yes
Manual
Manual
M a n u a l
Manual
Manual
M a n u a l
C C N
I
Low charge, faulty EXV or thermistor, or plugged filter drier
Low charge, faulty EXV or thermistor, or plugged filter drier.
Faulty EXV or thermistor
Faultv EXV or thermistor
Configuration error
Configuration omitted
Network command.
*Reset automatic first time, manual if repeated same day
49
Possible causes of failure:
1.
High-Pressure Switch Open - High-pressure switch for each compressor is wired in series with 24-v power that energizes compressor control relay. If high-pressure switch opens during operation, compressor stops. This is detected by microprocessor through the feedback terminals.
3 .
4.
5 .
6.
DSIO-LV or DSIO-EXV Module Failure - If a DSIO-LV relay module relay fails open or closed, microprocessor detects this, locks compressor off and indicates an error.
Wiring Errors - If a wiring error exists causing CPCS,
CR, or feedback switch not to function properly, microprocessor indicates an error.
Processor (PSIO) Failure - If hardware that monitors feedback switch fails, or processor fails to energize relay module relay to on, an error may be indicated.
NOTE: The control does not detect circuit breaker failures. If a circuit breaker trips on lead compressor in a circuit, a low oil pressure failure is indicated. On the other compressors, no failure is indicated.
Ground Fault Module on 130-2 10, 225, 250, 280, and associated modular units (CGFA or CGFB) Open - Module contacts are in lead compressor circuits, but ground fault could be in any compressor in affected circuit.
Ground fault of any 040-l 10 and associated modular unit compressor (field-supplied accessory on 040-060 and 070,
60 Hz units; standard on 070, 50 Hz and 80-l 10 and associated modular units) will cause a trip.
Checkout Procedure - Shut off main power to unit. Turn on control power, then step through subfunction MFi to proper compressor number (i.e., failure code 5 is compressor Bl). Next, energize the step. If step works correctly, then failure code is caused by: l
HPS (high-pressure switch) open l
Misplaced feedback wire from 54 and J5 terminals
0 Ground wire and 24-v feeds reversed on one or more points on 53
Compressor Alarm Circuit
- For compressor Al alarm circuit, processor closes contacts between 54 terminals 2 and 3 to start compressor. See Fig. 10A - 10D. Safeties shown to left of 54 must be closed in order for power to reach compressor control relay, and the feedback input terminals on J3.
Failure of power to terminal 1 on 53, when contacts between 2 and 3 on J4 should be closed, causes a code 1 alarm.
Terminal 2 on 53 is the other leg of the compressor Al feedback channel. It is connected to the 24-v common.
NOTE: Similar connections for each compressor can be lowed on the unit wiring diagrams located on the unit.
fol-
Code 9
Leaving water thermistor failure
Code 10
Entering water thermistor failure
If temperature measured by these thermistors is outside range of -40 to 240 F (-40 to 116 C), unit shuts down after going through a normal pumpout. Reset is automatic if temperature returns to the acceptable range, and unit start-up follows normal sequence. Cause of fault is usually a bad thermistor, wiring error, or loose connection.
Code 19
Code 20
Compressor Al suction sensor failure
Compressor Bl suction sensor failure
On units with thermistors, if temperature measured by these thermistors is outside the range of -40 to 240 F (-40 to 116 C), affected circuit shuts down after going through a normal pumpout. Other circuit continues to run. Reset is automatic if temperature returns to the acceptable range,
50 and circuit start-up follows normal sequence. Cause of thisfault is usually a bad thermistor, wiring error or loose connection.
On units with transducers, if the saturated suction temperature is greater than the leaving water temperature plus
10” F (5.5 C) for more than 5 minutes, the affected circuit shuts down (after going through normal pumpout). The reset is automatic if the saturated suction temperature returns to the acceptable range and start-up follows the normal sequence. Cause of this fault is usually a bad transducer, a wiring error, or a loose connection.
Code 21
Reset thermistor failure (applies only to installations having external temperature reset)
If temperature measured by this thermistor is outside range of 40 to 240 F (-40 to 116 C), reset function is disabled and unit controls to normal set point. If temperature returns to the acceptable range, reset function is automatically enabled. Cause of this fault is usually a bad thermistor, wiring error or loose connection.
Code 22
Code 23
Code 24
Code 25
Code 26
Code 27
Compressor A 1 discharge pressure transducer failure
Compressor B 1 discharge pressure transducer failure
Compressor A 1 suction pressure transducer failure
Compressor B 1 suction pressure transducer failure
Compressor Al oil pressure transducer failure
Compressor Bl oil pressure transducer failure
If output voltage of any of these transducers is greater than 5 v, affected circuit shuts down without going through pumpout process. Other circuit continues to run. Reset is automatic if output voltage returns to the acceptable range, and circuit start-up follows normal sequence. Cause of fault is usually a bad transducer or a wiring error.
Code 28 Low transducer supply voltage
If transducer supply voltage is less than 4.5 v or greater than 5.5 v, unit shuts down without going through pumpout process. Reset is automatic if supply voltage returns to the acceptable range, and circuit start-up follows normal sequence. Cause of fault is usually a faulty transformer, or primary voltage is out of range.
The voltage supplied to the processor is polarized. When checking for proper voltage supply, be sure to consider this polarity. If voltage appears to be within acceptable tolerance, check to be sure the transformer supplying PSl is not grounded. Grounding the supply transformer can result in
serious damage to the control system.
Code 29
Chilled water pump interlock switch open
(applies only if unit is configured for use with a chilled water pump interlock).
Code can occur under any of these conditions:
1. Interlock switch fails to close chilled water pump starts within o n e minute after
2. Interlock switch opens during unit operation
3. Interlock voltage is detected, but unit is not configured for interlock
4. Interlock voltage is outside its valid range
If any of these conditions occur, all compressors are disabled and, if running, shutdown occurs without pumpout.
Chilled water pump also shuts down. Reset is manual, with
LOCAL/ENABLE-STOP-CCN switch. Most probable cause of this fault is shutdown or failure of chilled water pump to start. Other possibilities are improper configuration or wiring errors.
Code 30 Reset input failure (4 to 20 mA)
Code 31 Demand limit input failure (4 to 20 mA)
These codes apply only if unit is configured for these functions. If 4-20 mA signal is less than 4 or more than
20 mA, reset or demand limit function is disabled and unit functions normally. If mA signal returns to the acceptable range, function is automatically enabled.
Code 32 Loss of communication with compressor relay module (DISO-LV)
Code 33 Loss of communication with EXV relay module (DSIO-EXV)
If communication is lost with either of these modules, unit shuts down without pumpout. This alarm resets
auto-
matically when communication is restored. The unit starts up normally after alarm condition is reset. Probable cause of condition is a faulty or improperly connected plug, wiring error, or faulty module.
Loss of communication can be attributed to a grounded transformer with a secondary voltage of 21 vat supplying the PSIO, DSIO-LV, or 4 IN/4 OUT modules; the 12.5-vat transformer supplying the DSIO-EXV module; or the
24-vat transformer supplying PS 1 for the transformers. These
transformers should not be grounded, or serious damage to
controls can result. Check to be sure the transformers are not grounded.
NOTE: If a blank PSI0 module is downloaded without being connected to the modules DSIO, this alarm is energized.
Code 34 Loss of communication with 4 In/4 Out module
This applies only if one or more of the following options are used:
0 external temperature reset l
4-20 mA temperature reset l external switch controlled dual set point l switch controlled demand limit l 4-20 mA demand limit l hot gas bypass
If communication is lost with 4 IN/4 OUT module, the unit shuts off automatically, after finishing pumpout. Reset of alarm is automatic when communication is restored. Start-up after alarm is remedied follows a normal sequence. Probable cause of condition is a faulty or improperly connected plug, wiring error, or faulty module.
Loss of communication can be attributed to a grounded transformer with a secondary voltage of 21 vat supplying the PSIO, DSIO-LV, or 4 IN/4 OUT; the 12.5vat transformer supplying the DSIO-EXV module, or the 24-vat transformer supplying PS 1 for the transformers. These transformers
should not be grounded, or serious damage to controls can
result. Check to be sure the transformers are not grounded.
Code 36 Low refrigerant pressure, Circuit A
Code 37 Low refrigerant pressure, Circuit B
If suction pressure transducer senses a pressure below set point for more than 5 minutes at start-up or more than
2 minutes during normal operation, affected circuit shuts down without going through the pumpout process. Reset is automatic when pressure reaches 10 psig above set point if there have been no previous occurrences of this fault on the same day. If this is a repeat occurrence on same day, then reset is manual, with LOCAL/ENABLE-STOP-CCN switch,
Factory configured set point is 27 psig for standard chillers and 12 psig for brine chillers.
Possible causes of fault are low refrigerant charge, faulty
EXV, plugged filter drier, or faulty transducer.
Code 38 Failure to pump out, Circuit A
Code 39 Failure to pump out, Circuit B
The pumpout process is terminated when saturated suction temperature is 10” F (5.5” C) below temperature at be-
51 ginning of pumpout, or 10” F (5.5” C) below leaving water temperature or reaches a saturated suction temperature of
-15 F (-26 C). If appropriate saturated suction temperature is not met within 3 minutes (on 2 consecutive tries}, circuit shuts down without pumpout. Reset is manual with LOCAL/
ENABLE-STOP-CCN Switch, and start-up follows normal sequence.
Possible causes for this alarm are a bad thermistor or transducer or a faulty EXV.
Code 40 Low oil pressure, Circuit A
Code 41 Low oil pressure, Circuit B
If oil pressure differential is less than set point for more than 2 minutes at start-up, or more than one minute during normal operation, affected circuit shuts down without going through pumpout process, Reset is manual with LOCAL/
ENABLE-STOP-CCN switch, and start-up follows normal sequence.
Factory configured differential oil pressure is
6 psig.
Possible causes of fault are faulty compressor, EXV, crankcase heater or transducer, refrigerant overcharge, insufficient oil charge, or tripped circuit breaker.
Code 42 Cooler freeze protection
If cooler entering or leaving water temperature is below
34 F (1.1 C) for water or more than 8” F (4.4” C) below set point for brine, unit shuts down without pumpout. Chilled water pump continues to run if controlled by chiller controls. Reset is automatic when leaving water temperature reaches 6” F (3” C) above set point, providing there has been no prior occurrence of this fault the same day. If fault has occurred previously the same day, reset is manual with
LOCAL/ENABLE-STOP-CCN switch.
Possible causes of fault are low water flow or faulty thermistor.
Code 43 Low water flow
If any compressors are operating and entering water temperature is 3” F (1.7” C) or more below leaving water temperature for more than one minute, unit shuts down without pumpout. Chilled water pump also shuts down. Reset is manual with LOCAL/ENABLE-STOP-CCN switch, and start-up follows normal sequence.
This is a suitable method for sensing low water flow because entering water thermistor is in the cooler shell and responds more quickly to compressor operation than the leaving water thermistor in the leaving water nozzle, Possible causes of fault are faulty chilled water pump, control or thermistor.
Code 44 Low cooler suction temperature, Circuit A
Code 45 Low cooler suction temperature, Circuit B
If saturated suction temperature is less than 32 F (0°C) and is 20” F (11” C) for water or 30” F (16” C) for brine or more below leaving fluid temperature, mode 14 is displayed. Unit continues to run, but additional compressors are not allowed to start, If condition persists for more than
10 minutes, fault code is displayed, and unit shuts down without pumpout. Reset is manual with LOCAL/ENABLE-
STOP-CCN switch, and start-up follows normal sequence.
Possible causes of fault are low refrigerant charge, plugged filter drier, or a faulty EXV or thermistor.
Code 46 High suction superheat, Circuit A
Code 47
High suction superheat, Circuit B
If EXV is fully open, suction superheat is greater than
75 F (42 C) and saturated evaporator temperature is less than MOP (maximum operating pressure) for more than 5 minutes, unit shuts down after normal pumpout process.
Reset is manual with LOCAL/ENABLE-STOP-CCN switch, and start-up follows normal sequence.
Possible causes of fault are low refrigerant charge, plugged filter drier, or a faulty EXV or thermistor.
Code 48 Low suction superheat, Circuit A
Code 49
Low suction superheat, Circuit B
If EXV is at minimum position, suction superheat is less than 10” F (5.5” C) or saturated evaporator temperature is greater than MOP (maximum operating pressure) for more than 5 minutes, affected circuit shuts down after going through pumpout process, Reset is manual with LOCAL/ENABLE-
STOP-CCN switch, and start-up follows normal sequence.
Possible causes of fault are faulty EXV or thermistor.
Code 50 Illegal configuration
This fault indicates a configuration error. Unit is not allowed to start. Check all configuration data and set points and correct any errors.
Code 51 Initial configuration required i2G7
This fault indicates factory configuration has not been done, and unit is not allowed to start. Refer to unit wiring label diagrams for factory configuration codes, There are 8 groups of S-digit numbers that must be entered. The first
Enter each group, then press the H key. Use the empty screen. Unit should start after factory and field configurations are correctly entered.
The usual cause of this fault is replacement of the processor module. Refer to instructions accompanying the replacement module.
Code 52 Emergency stop by CCN command.
Unit goes through normal shutdown when this command is received, and goes through normal start-up when command is cancelled.
S T A N D A R D : 040-060 50 H z
040-070 60 H z r I -
,
1 C R ’ S
[CPCS ’ Sl
S T A N D A R D : 070 50 Hz
A C C E S S O R Y : 040-060 50 H z &I
C O M M
CPCS
CR
D G T
DSIO
HPS
K
PWR
SNB
TB
TRAN
U
-
-
-
-
LEGEND
Contactor
Circuit Breaker
Communications Bus
Compressor Protection
Control Module
Compressor Contactor Relay
Discharge Gas Thermostat (Optional)
Relay Module (Low Voltage)
High-Pressure Switch
Low Vottage
P l u g
P o w e r
S n u b b e r
T e r m i n a l B l o c k
Transformer
Unloader
Fig. IOA - 24-V Safety Circuit Wiring (040-070)
52
TE7 REO
I
I
24VAC
CONTROL 5CtlEliATIC
CN5
32MP
TNANZ
w
IlEO2 21V
S E C O N D A R Y
1
]TE?
DGT
DSIO
HPS
E!
PWR
GLN
U
LEGEND
- Contactor
- Communications Bus
-
Compressor Protection Control Module
-
Discharge Gas Thermostat (Optional)
- Relay Module (Low Voltage)
- l-tigh-Pressure Switch
- Low Voltage
- Plug
- Power
- Terminal Block
- Transformer
- Unloader
Fig. 1OB - 24-V Safety Circuit Wiring (080-110 and Associated Modular Units)
53
P
CGF
EM”
E?
kL
SNB
TB
TRAN
U
LEGEND
Ground Fault Module
Communications Bus
Compressor Contactor Relay
Relay Module (Low Voltage)
High-Pressure Switch
Low Voltage
P l u g
Snubber
Terminal Block
Transformer
Unloader
Fig. IOC - 24-V Safety Circuit Wiring (130-210 and Associated Modular Units)
54
PL12-7 Poll-7
LEGEND c -
C G F -
Z” 1
D G T -
DSIO -
E X V -
H P S -
/$ ::
Contactor
Ground Fault Module
C o m m o n
Control Relay
Discharge Gas Thermostat (Optional)
Relay Module (Low Voltage)
Electronic Expansion Valve
High-Pressure Switch
Low Volta e
;b I:
TB -
P l u g
Reset Button
Terminal Board
Fig. IOD - 24-V Safety Circuit Wiring (225, 250, and 280 Units)
5 5
1.
Electronic Expansion Valve
EXV OPERATION - These valves control the flow of liquid refrigerant into the cooler. They are operated by processor to maintain a specified superheat at lead compressor entering gas thermistor (located between compressor motor and cylinders). There is one EXV per circuit. See Fig. 11.
High-pressure liquid refrigerant enters valve through bottom. A series of calibrated slots are located in side of orifice assembly. As refrigerant passes through orifice, pressure drops and refrigerant changes to a 2-phase condition
(liquid and vapor). To control refrigerant flow for different operating conditions, sleeve moves up and down over orifice, thereby changing orifice size. Sleeve is moved by a linear stepper motor. Stepper motor moves in increments and is controlled directly by processor module. As stepper motor rotates, motion is transferred into linear movement by lead screw. Through stepper motor and lead screws,
760 discrete steps of motion are obtained. The large number of steps and long stroke result in very accurate control of refrigerant flow.
The biF\ subfunction shows EXV valve position as a percent of full open. Position should change constantly while unit operates. If a valve stops moving for any reason
(mechanical or electrical) other than a processor or thermistor failure, the processor continues to attempt to open or close the valve to correct the superheat. Once the calculated valve position reaches 60 (fully closed) for 040-210 and associated modular units, 145 (fully closed) for 225,
250, and 280 units, or 760 (fully open) it remains there. If
EXV position reading remains at 60, 145 or 760, and the thermistors and pressure transducers are reading correctly, the EXV is not moving. Follow EXV checkout procedure below to determine cause.
The EXV is also used to limit cooler suction temperature to 50 F (10 C). This makes it possible for chiller to start at higher cooler water temperatures without overloading compressor. This is commonly referred to as MOP (maximum operating pressure), and serves as a load limiting device to prevent compressor motor overloading, This MOP or load limiting feature enables the 30G FlotronicT’ II chillers to operate with up to 95 F (35 C) entering water temperatures during start-up and subsequent pull-down.
STEPPER
‘ D C )
CHECKOUT PROCEDURE - Follow steps below to diagnose and correct EXV problems.
1, Check EXV driver outputs. Check EXV output signals at appropriate terminals on EXV driver module (see
Fig. 12) as follows:
Connect positive test lead to terminal 1 on EXV driver.
Set meter for approximately 20 vdc. Enter outputs subfunction of test function by pressing riF[ , then advance to EXVA test by pressing q
8 times. Press
T;ip--p-&q*
The driver should drive the circuit A EXV fully open. During next several seconds connect negative test lead to pins 2, 3, 4 and 5 in succession. Voltage should rise and fall at each pin. If it remains constant at a voltage or at zero v, remove connector to valve and recheck.
Press m H to close circuit A EXV. If a problem still exists, replace EXV driver module. If voltage reading is correct, expansion valve should be checked. Next, test
EXVB. Connect positive test lead to pin 7 and the negative test lead to pin 8, 9, 10, 11 in succession during
EXVB test.
2. Check EXV wiring, Check wiring to electronic expansion valves from terminal strip on EXV driver. See
Fig. 12.
a. Check color coding and wire connections. Make sure they are connected to correct terminals at driver and
EXV plug connections.
b. Check for continuity and tight connection at all pin terminals.
c. Check plug connections at driver and at EXVs to be sure EXV cables are not crossed.
E X V D R I V E R
BOARD - J4
I
O R I F I C E
ASSEMBLY
(INSIDE P I S T O N
SLEEVE)
Fig. 11 - Electronil c Expansion Valve (EXV)
56
T
EXV - Electronic Expansion Valve
Fig. 12 - EXV Cable Connections to
EXV Driver Module, DSIO (EXV)
3. Check resistance of EXV motor windings. Remove plug at 54 terminal strip and check resistance between common lead (red wire, terminal D) and remaining leads,
A, B , C, and E (see Fig. 12). Resistance should be
25 ohms -1- 2 ohms.
Control of valve is by microprocessor. A thermistor and a pressure transducer located in lead compressor are used to determine superheat. The thermistor measures temperature of the superheated gas entering the compressor cylinders. The pressure transducer measures refrigerant pressure in the suction manifold. The microprocessor converts pressure reading to a saturation temperature. The difference between temperature of superheated gas and saturation temperature is the superheat.
i .‘I
Because the EXVs are controlled by the processor module, it is possible to track valve position. During initial start-up, EXV is fully closed. After start-up, valve position is tracked by processor by constantly observing amount of valve movement.
The processor keeps track of EXV position by counting the number of open and closed steps it has sent to each valve. It has no direct physical feedback of valve position. Whenever unit is switched from STOP to RUN position, both valves are initialized, allowing the processor to send enough closing pulses to the valve to move it from fully open to fully closed, then reset the position counter to zero.
4. The EXV test can be used to drive EXV to any desired position. When EXV opens, the metering slots begin to provide enough refrigerant for operation at these steps: step 60 for sizes 040-210 and associated modular units, or 145 for sizes 225, 250, and 280. This is fully closed position when circuit is operating. The fully open position is 760 steps.
5. Check thermistors and pressure transducers that control
EXV. Check thermistors and pressure transducers that control processor output voltage pulses to EXVs. See
Fig, 13 for locations.
Circuit A - Thermistor T7, Suction Pressure Transducer SPTA
Circuit B - Thermistor T8, Suction Pressure Transducer SPTB a. Use temperature subfunction of the status function
(m bi ) to determine if thermistors are reading correctly.
b. Check thermistor calibration at known temperature by measuring actual resistance and comparing value measured with values listed in Tables 15 and 16.
c. Make sure thermistor leads are connected to proper pin terminals at 57 terminal strip on processor module and that thermistor probes are located in proper position in refrigerant circuit. See Fig. 14 and 15.
d. Use the pressure subfunction of the Status function
( m Fl) to determine if pressure transducers are reading correctly. Connect a calibrated gage to lead compressor suction or discharge pressure connection to check transducer reading.
e. Make sure transducer leads are properly connected in junction box and at processor board. Check transformer 5 output. Check voltage transducer 5 vdc +
.2 v.
When above checks have been completed, check actual operation of EXV by using procedures outlined in Step 5.
6. Check operation of EXV.
a. Close liauid line service valve of circuit to be checked, and run ihrough the test step ( 17 Fi ) for lead comnressor in that circuit to pump down low side of sysiem. Repeat test step 3 tcmes-to ensure all refrigerant has been pumped from low side.
NOTE: Be sure to allow compressors to run for the full pumpout period.
b. Turn off compressor circuit breaker(s). Close compressor discharge service valves and remove any remaining refrigerant from low side of system.
c. Remove screws holding top cover of EXV. Carefully remove top cover. If EXV plug was disconnected during this process, reconnect it after cover is removed.
When removing top cover, be careful to avoid damaging motor leads.
d. Enter appropriate EXV test step for EXVA or
EXVB in the outputs subfunction of the test function
(jlF[). Press-mmriH to initiate test. With cover lifted off EXV valve body, observe operation of valve motor and lead screw. The motor should turn counterclockwise, and the lead screw should move up out of motor hub until valve is fully open. Lead screw movement should be smooth and uniform from fully closed to fully open position. Press l-+$0 check open to closed operation.
If valve is properly connected to processor and receiving correct signals, yet does not operate as described above, valve should be replaced.
Operation of EXV valve can also be checked without removing top cover. This method depends on operator’s skill in determining whether or not valve is moving. To use this method, initiate EXV test and open valve. Immediately grasp EXV valve body. As valve drives open, a soft, smooth pulse is felt for approximately 26 seconds as valve travels from fully closed to fully open. When valve reaches end of its opening stroke, a hard pulse is felt momentarily. Drive valve closed and a soft, smooth pulse is felt for the
26 seconds necessary for valve to travel from fully open to fully closed. When valve reaches end of its stroke, a hard pulse is again felt as valve overdrives by 50 steps. Valve should be driven through at least
2 complete cycles to be sure it is operating properly.
If a hard pulse is felt for the 26 second duration, valve is not moving and should be replaced.
The EXV test can be repeated as required by entering any percentage from 0 ( r;l ) to 100 to initiate movement.
If operating problems persist after reassembly, they may be due to out-of-calibration thermistor(s) or intermittent connections between processor board terminals and EXV plug. Recheck all wiring connections and volta g e signals,
Other possible causes of improper refrigerant flow control could be restrictions in liquid line, Check for plugged filter drier(s) or restricted metering slots in the EXV.
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. Clean or replace valve if necessary.
NOTE: 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.
57
MUFFLERS
C O M P R E S S O R S
I I c r
CIRCUIT B
CIRCUIT A
LEGEND
D P T - Discharge Pressure Transducer
- Oil Pressure Transducer
:ppTT
- Suction Pressure Transducer
T
- Thermistor Number
Fig. 13 - Thermistor and Pressure Transducer Locations
FILTER
D R I E R
-
J
58
A I R
VENT
: LEAVING
W A T E R / B R I N E
THERMISTOR (Tl)
C O O L E R
F L U I D
B A F F L E
ENTERING
W A T E R / B R I N E
C O N N E C T I O N
SUCTION
C O N N E C T I O N
D R A I N
L E A V I N G
W A T E R / B R I N E
C O N N E C T I O N
I
C O O L E R
TUBE
(TYPICAL)
ENTERING
W A T E R / B R I N E
T H E R M I S T O R
INLET
C O N N E C T I O N
Fig. 14 - Thermistor Locations
(Circuits A and B, Lead Compressor Only)
COUPLING
A C C E S S O R Y
JACKETED
JACKETED
C A B L E
S E N S O R
TUBE
T H E R M I S T O R
W E L L poi-i,
(~~~%~~
1
I
I
AY
F E R R U L E S
INSIDE f
3/16” (4 8) DIA 114” (6.4)
OD COUPLING
WATER-SIDE TEMPERATURE SENSOR (Tl, T2, - ALL UNITS),
(T7, T8 - 225, 250, 280)
NOTE: BEND SLIGHTLY-
FOR INSERTION
INTO WELL
(76)
(4 6)
REFRIGERANT TEMPERATURE SENSOR (T7, T8 - 040-210 AND
ASSOCIATED MODULAR UNITS)
Fig. 15 - Thermistors
59
Thermistors -
All thermistors are identical in their temperature vs. resistance performance. Resistance at various temperatures are listed in Tables 15 and 16.
LOCATION - General location of thermistor sensors are shown in Fig. 13.
Cooler Leaving Water Thermistor (Tl) - Tl is located in leaving water nozzle. The probe is immersed directly in the water. All thermistor connections are made through a %-in.
coupling. See Fig. 15. Actual location is shown in Fig. 13 and 14.
Cooler Entering Water Thermistor (T2) - T2 is located in cooler shell in first baffle space near tube bundle. Thermistor connection is made through a %-in. coupling. See
Fig. 15. Actual location is shown in Fig. 13 and 14.
Compressor Suction Gas Temperature Thermistors (T7 and
T8) - T7 and T8 are located in lead compressor in each circuit in suction passage between motor and cylinders, above oil pump. They are well-type thermistors on 040-210 and associated modular units, or ferrule-type on 225, 250, 280 units. See Fig. 13 and 14.
THERMISTOR REPLACEMENT (Tl , T2, T7, TS) (Compressor and Cooler)
Thermistors are installed directly in fluid or refrigerant circuit. Relieve all refrigerant pressure using standard refrigerant practices or drain fluid before removing.
Proceed as follows (see Fig. 15):
To replace sensors Tl, T2, T7 (225,250,280), and T8
(225,250,280)
1. Remove and discard original thermistor and coupling.
IMPORTANT: Do not disassemble new coupling.
Install as received.
I
2. Apply pipe sealant to ‘/a-in. NPT threads on replacement coupling and install in place of original. Do not use packing nut to tighten coupling. This damages ferrules (see Fig. 15).
3. Insert new thermistor in coupling body to its full depth.
If thermistor bottoms out before full depth is reached, pull thermistor back out I/s in, before tightening packing nut. Hand tighten packing nut to position ferrules, then finish tightening 19’4 turns with a suitable tool. Ferrules are now attached to thermistor which can be withdrawn from coupling for unit servicing.
To replace thermistors T7 and T8 (040-210 and associated modular units):
Add a small amount of thermal conductive grease to thermistor well. Thermistors are friction-fit thermistors, which must be slipped into receiver located in the compressor pump end.
Pressure Transducers
- T
WO
tvpes of pressure transducers are used on 30G Flotronic’” Ii*chille&: a low pressure transducer and a high pressure transducer. The low pressure transducer is identified by a white dot on the body of the transducer, and the high pressure transducer by a red dot. See Fig. 16.
Three pressure transducers are mounted on each lead compressor: 2 low-pressure transducers to monitor compressor suction pressure and oil pressure, and a high-pressure transducer to monitor compressor discharge pressure (see
Fig. 17 for exact locations on compressor). Each transducer is supplied with 5 vdc power from a rectifier which changes
24 vat to 5 vdc.
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.
r
TRANSDUCER REPLACEMENT
Transducers are installed directly in the refrigerant circuit. Relieve all refrigerant pressure using standard refrigeration practices before removing.
1. Relieve refrigerant pressure using standard refrigeration practices.
2. Disconnect transducer wiring at transducer by pulling up on locking tab while pulling weather-tight connection pfug from end of transducer. Do not pull on trans-
ducer wires.
3. Unscrew transducer from !&in. male flare fitting. When installing new pressure transducer, do not use thread sealer. Thread sealer can plug transducer and render it inoperative.
4. Insert weathertight wiring plug into end of transducer until locking tab snaps in place.
5. Check for refrigerant leaks.
-75”
l/4” SAE FEMALE FLARE
WHITE DOT-LOW PRESSURE TRANSDUCER
RED DOT -HIGH PRESSURE TRANSDUCER
SAE - Society of Automotive Engineers
Fig. 16 - Pressure Transducer
60
!
TEMP:;fTURE
-2i.b
-24.0
-23.0
-22.0
-21.0
-20.0
::: too
5:o
1 7 . 0
1 8 . 0
1 9 . 0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
55.0
56.0
57.0
58.0
59.0
60.0
47.0
48.0
49.0
50.0
51.0
52.0
53.0
54.0
39.0
40.0
41.0
42.0
43.0
44.0
45.0
46.0
31 .o
32.0
33.0
34.0
35.0
36.0
37.0
38.0
7x
8:0
9.0
10.0
1 1 . 0
1 2 . 0
1 3 . 0
14.0
i5.0
1 6 . 0
62.0
63.0
64.0
65.0
66.0
67.0
68.0
69.0
- 1 8 . 0
- 1 7 . 0
- 1 6 . 0
- 15.0
- 14.0
- 1 3 . 0
- 1 2 . 0
-11.0
- 10.0
- 9 . 0
-8.0
-7.0
-6.0
-5.0
-4.0
I;.;
- l : o
0 . 0
Table
15 - Thermistor Temperature (OF) vs Resistance/Voltage Drop; Flotronic’” II
VOLTAGE
D R O P ( V )
4 8 2 1
4818
4814
4806
4.800
4793
4786
4779
4772
4764
4.757
4749
4740
4734
4724
4715
4705
4696
4.688
4676
4666
4657
4648
3547
3520
3493
3464
3437
3409
3382
3.353
3757
3729
3705
3.679
3653
3627
3600
3.575
3.323
3295
3.267
3238
3210
3 181
3152
3123
3.948
3927
3902
3.878
3854
3828
3805
3781
4125
4103
4082
4.059
4037
4017
3994
3.968
4278
4258
4241
4223
4202
4184
4.165
4145
4413
4397
4.381
4366
4348
4.330
4313
4.295
4527
4.514
4.501
4487
4472
4457
4442
4427
EEi
4'613
4602
4592
4579
4.567
4554
4540
RESISTANCE
(OHMS)
98010
20547
19960
19393
18843
18311
17796
17297
16814
16346
15892
15453
15027
14614
14214
13826
13449
33185
32176
31202
30260
29351
28473
27624
26804
26011
25245
24505
23789
23096
22427
21779
21153
55311
53526
51804
50143
48541
46996
45505
44066
42679
41339
40047
38800
37596
36435
35313
34231
94707
91522
88449
85486
82627
79871
77212
74648
72175
69790
67490
65272
63133
61070
59081
57162
1 3 0 8 4
1 2 7 3 0
12387
12053
11730
11416
11112
10816
10529
10250
9979
9717
9461
9213
8973
8739
8511
8291
8076
7868
7665
7468
7277
7091
6911
6735
6564
6399
6238
6 0 8 1
5929
868
850
832
815
798
782
765
750
734
1430
1401
1373
1345
1318
1291
1265
1240
1680
1647 t614
1582
1550
1519
1489 t 459
1214
1190
1165
1141
1118
1977
1937
1898
1860
1822
1786
1750
1715
ZE
2286
2239
2192
2147
2103
2060
2018
1 0 9 5
1 0 7 2
1 0 5 0
1 0 2 9
1 0 0 7
986
965
945
925
906
887
RESISTANCE
(OHMS)
3243
3170
3099
3031
2964
2898
2835
2773
3906
3814
3726
3640
3556
3474
3395
3318
4737
4622
4511
4403
4298
4196
4096
4000
5781
5637
5497
5361
5229
5101
4976
4855
2713
2655
2597
2542
2488
2436
VOLTAGE
D R O P ( V )
1 585
1562
1538
1 517
1496
1474
1453
1.431
1 408
1389
1369
1348
1 327
1308
1291
1 289
1 269
1 250
1230
1 211
1192
1173
1 155
1 136
1 118
1 100
1.082
f 064
1 047
1 0 2 9
1.012
0 995
0978
0 962
0945
0 929
0914
0 898
0883
0868
0853
2388
2360
2332
2.305
2277
2 251
2217
2189
2622
2593
2563
2533
2505
2.476
2447
2417
3 . 0 9 3
3.064
3034
3005
2977
2.947
2.917
2884
2857
2.827
2797
2766
2738
2708
2679
2 650
2.162
2136
2107
2080
2053
2028
2 001
1 973
1.946
1 919
1897
1870
1.846
1.822
1792
1 771
1.748
1724
1.702
1676'
1653
1 630
1 607
61
:3
89 x:
E xi
9 6
3;:
;i;
1 0 2
:::
1 0 5
1 0 6
1 2 6
127
1 2 8
1 2 9
1 3 0
1 3 1
1 2 0
1 2 1
122
1 2 3
1 2 4
1 2 5
113
1 1 4
1 1 5
1 1 6
1 1 7
1 1 8
1 1 9
2:
1 0 9
1 1 0
1 1 1
1 1 2
139
1 4 0
1 4 1
1 4 2
1 4 3
1 4 4
132
1 3 3
1 3 4
1 3 5
136
1 3 7
1 3 8
1 5 8
159
1 6 0
1 6 1
1 6 2
163
1 6 4
1 6 5
166
1 4 5
1 4 6
147
1 4 6
1 4 9
1 5 0
1 5 1
1 5 2
1 5 3
1 5 4
155
156
1 5 7
TEMPERATURE
(5
TX
;:
TZ
TI
79
EY
82 zi ii5
TEMPERATURE
F)
1 7 8
1 7 9
1 8 0
1 8 1
1 8 2
1 8 3
1 8 4
1 8 5
1 8 6
1 8 7
1 8 8
1 8 9
1 9 0
1 9 1
1 9 2
1 9 3
1 9 4
1 9 5
1 9 6
1 9 7
1 9 8
207
208
209
210
211
212
213
214
1 9 9
200
201
202
203
204
205
206
215
216
217
218
2 1 9
220
221
222
223
224
225
1 6 7
1 6 8
1 6 9
1 7 0
1 7 1
1 7 2
1 7 3
1 7 4
1 7 5
1 7 6
1 7 7
REWSTANCE
( O H M S )
5 8 1
5 7 0
5 6 1
5 5 1
5 4 2
5 3 3
5 2 4
5 1 6
5 0 8
5 0 1
4 9 4
487
7 1 9
705
690
6 7 7
6 6 3
6 5 0
6 3 8
6 2 6
6 1 4
6 0 2
5 9 1
1;:
4 6 7
4 6 1
4 5 6
4 5 0
4 4 5
4 3 9
4 3 4
4 2 9
424
4 1 9
4 1 5
4 1 0
4 0 5
4 0 1
3 9 8
350
344
338
332
325
318
311
304
3 9 1
386
382
377
372
367
361
356
297
289
282
: 2:
0526
0.520
0515
0.510
:%s
0 494
0488
0.425
0417
0 409
0401
0393
0384
0375
0366 z;;
0471
0465
0 459
0.453
0.446
0439
0432
VOLTAGE
D R O P ( V )
0.585
0579
0572
0566
0560
0554
0548
0542
0 649
0640
0632
0.623
0.615
0607
0600
0592
0 . 8 3 8
0824
0.810
0.797
0.783
0770
0758
0745
0734
0722
0.710
0.700
0.689
0678
0668
0659
TEMPERATURE
(C)
- 3 3
- 3 2
- 3 1
- 3 0
- 2 9
- 2 8
- 2 7
- 2 6
- 2 5
- 2 4
- 2 3
- 2 2
- 4 0
- 3 9
- 3 8
- 3 7
- 3 6
- 3 5
- 3 4
- 2 1
- 2 0
- 1 9
- 1 8
- 1 7
- 1 6
- 1 5
- 1 4
- 1 3
- 1 2
- 1 1
- 1 0
1;
- 7
1;
1;
- 2
- 1
0
: i z
109
3
Table 16 - Thermistor Temperature (“C) vs Resistance/Voltage Drop; Flotronic’” II
VOLTAGE
DROP (V)
4.896
Z~
4 . 8 7 4
4 . 8 6 6
4 8 5 7
4 8 4 8
4 8 3 8
4.828
4.817
4.806
4 794
4 . 7 8 2
4.769
4.755
4.740
4 725
4710
4.693
4.676
4 6 5 7
4 639
4
619
4 5 9 8
4 . 5 7 7
2.493
2.441
2.389
2337
2.286
2236
2.186
2.137
2087
2.039
1.991
2.917
2.864
2.810
2.757
2.704
2.651
2.598
2.545
3.337
3285
3234
3.181
3.129
3.076
3.023
2.970
3726
3 680
3.633
3.585
3.537
3.487
3438
3387
4.065
4026
3.986
3.945
3.903
3860
3816
3.771
4341
4310
4.278
4.245
4.211
4.176
4.140
4.103
4 554
4.531
4.507
4482
4.456
4.428
4400
4371
RESISTANCE
(Ohms)
168230
157440
147410
138090
129 410
121 330
113810
106 880
100 260
94165
88 480
83 170
78125
73 580
69 250
E 3:;
57 875
54 555
4 583
4389
4 204
4 028
3 861
3 701
3 549
3 404
3 266
3134
3 008
2 888
2 773
2 663
2 559
2 459
2 363
6 536
6 246
5 971
5 710
5 461
5 225
5 000
4 786
9485
9 044
8 627
8 231
7 855
7 499
7 161
6 840
21 163
20 079
19 058
18 094
17184
16 325
15515
14749
14026
13 342
12 696
12085
II 506
IO 959
10441
9 949
5 1 4 5 0
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
22313
TEMPERATURE
(Cl
46
4 7
48
6i
6 2
7 8
79
8 0
101
102 to3
104
105
106
107
1 387
1 337
1 290
1 244
1 200
1 158
1 118
1 079
1 871
1 801
1 734
1670
1609
1 550
1 493
1 439
1 041
1006
971
9 3 8
6 6 9
645
623
602
583
564
547
531
9 0 6
876
836
805
775
747
719
693
516
502
489
477
466
456
446
436
427
4 1 9
4 1 0
402
393
385
376
367
357
346
335
324
312
285
VOLTAGE
DROP (V)
1594
1553
1513
1474
1436
1.399
1.363
1.327
1.291
1.258
1.944
1898
1.852
1.807
1.763
1.719
1.677
1635
: :;;
I:160
1.129
0555
0545
0.535
0.525
0.515
0.506
0.496
0.486
0665
0648
0.632
0.617
0.603
0.590
0.577
0.566
0.476
0466
0454
0.442
0 429
0.416
0401
0386
0370
0.838
0813
0 789
0765
0743
0722
0702
0.683
: E:
1040
1012
0.984
0 949
0.920
0 892
0.865
RESISTANCE
(Ohms)
2 272
2184
62 r
. . i
-
THERMISTOR* REFRIGERANT
ENTERING TEMPERATURE
CYLINDERS
DISCHARGE
PRESSURE
TRANSDUCER*
EQUALIZER
LINE
OIL PRESSURE
TRANSDUCER*
SUCTION PRESSURE
TRANSDUCER*
SIGHT GLASS
(EACH COMPRESSOR)
Fig. 17 - Lead Compressor Transducer and Thermistor Locations
*Lead compressor only
6 3
Control Modules
Turn controller power off before servicing controls. This ensures safety and prevents damage to controller.
PROCESSOR MODULE (PSIO). 4 IN/4 OUT MODULE
(SIO), LOW-VOLTAGE TiELAY’MODULE (DSIO), AND
EXV DRIVER MODULE (DSIO) - The PSIO, DSIO and
SIO modules all perform continuous diagnostic evaluations of the condition of the hardware. Proper operation of these modules is indicated by LEDs (light emitting diodes) on the front surface of the DSIOs, and on the top horizontal surface of the PSI0 and SIO.
RED LED - Blinking continuously at a 3- to 5-second rate indicates proper operation. 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 or for bad module. On the PSI0 module, if the light is blinking at a rate of twice per second, the module should be replaced.
GREEN LED - On a PSI0 and an SIO, this is the green
LED closest to COMM connectors. The other green LED on module indicates external communications, when used.
Green LED should always be blinking when power is on. It indicates modules are communicating properly. If green LED is not blinking, check red LED. If red LED is normal, check module address switches. See Fig. 18, Proper addresses are:
PSI0 (Processor Module) - 01 (different when CCN connected)
DSIO (Relay Module) - 19
DSIO (EXV Driver Module) - 31
SIO (4 In/4 Out Module) - 59
If
all modules indicate communication failure, check COMM plug on PSI0 module for proper seating. If a good connection is assured and condition persists, replace PSI0 module.
If only DSIO or SIO module indicates communication failure, check COMM plug on that mode for proper seating. If a good connection is assured and condition persists, replace DSIO or SIO module.
All system operating intelligence rests in PSI0 module , the module that controls unit. This module monitors conditions through input and output ports and through DSIO modules (low-voltage relay module and EXV driver module).
The machine operator communicates with microprocessor through keypad and display module. Communication between PSI0 and other modules is accomplished by a 3-wire sensor bus. These 3 wires run in parallel from module to module.
On sensor bus terminal strips, terminal 1 of PSI0 module is connected to terminal 1 of each of the other modules.
Terminals 2 and 3 are connected in the same manner. See
Fig, 19, If a terminal 2 wire is connected to terminal 1, system does not work.
In FlotronicTM II Chillers, processor module, low-voltage relay module, and keypad and display module are all powered from a common 21-vat power source which connects to terminals 1 and 2 of power input strip on each module. A separate source of 21-vat power is used to power options module through terminals 1 and 2 on power input strip. A separate source of 12.5 vat power is used to power EXV driver module through terminals 1 and 2 on power input strip.
64
Fig. 18 -
Module
Address
Selector Switch Locations
PSIO, SIO
ADDRESS
SELECTOR
PSI0
( pRocEMssOp
DSIO DSIO
(RELAY) (EXV
DRIVER)
HSIO
SIO
( L I D ) ( 4 I;W;UT
Fig. 19 - Sensor Bus Wiring
(Communications)
PROCESSOR MODULE (PSIO) (Fig. 20)
Inputs - Each input channel has 3 terminals; only 2 of the terminals are
used.
Application of machine determines which terminals are used. Always refer to individual unit wiring for terminal numbers.
Outputs
- Output is 24 vdc. There are 3 terminals, only 2 of which are used, depending on application. Refer to unit wiring diagram.
NOTE: Address switches (see Fig. 20) must be set at 01
(different when CCN connected).
fL.w-- 6%2
0
P-
C H A S S I S
G R O U N D
I
P
0
-( REAR)
N E T W O R K
SNNECTOR
A D D R E S S
S W I T C H E S
0
<
0
PSI0
’ (FORWARD)
S E N S O R B U S
C O N N E C T O R
J8
LOW VOLTAGE RELAY MODULE (DSIO) (Fig. 21)
Inputs - Inputs on strip 53 are discrete inputs (ON/OFF).
When 24vat power is applied across the 2 terminals in a channel it reads as on signal. Zero v reads as an off signal.
Outputs - Terminal strips J4 and JS are internal relays whose coils are powered-up and powered-off by a signal from microprocessor. The relays switch the circuit to which they are connected. No power is supplied to these connections by
DSIO module. L
--/%o-6 93
-
S E N S O R B U S C O N N E C T O R
/
RED STATUS LIGHT -b
2,4,6, AND 8 ARE GRQUND (C)
9e
I
RELAYS “, :
I
1 $i 1 !;i
NEL I2
I I
IO
9
%YoN
C&MON
2:
COMMON
NO
&MON
2:
7
/
A D D R E S S A D J U S T M E N T
(NOT SHOWN) ON UNDERSIDE
ii!“”
LEGEND
- Communications Bus
- Normally Closed
1 bb;n$ly Open
I%
Fig. 21 - Low-Voltage Relay Module (DSIO)
8
7
6
5
I -
PWR - Power
Fig. 20 - Processor Module (PSIO)
6 5
4 IN/4 OUT MODULE (SIO) (Fig. 22) - 4 In/4 Out module allows the following features to be utilized:
1. Temperature Reset by outdoor air or space temperature.
A remote thermistor (Part No, 30GB660002) is also required.
NOTE: This accessory is temperature reset.
not
required for return water
2. Temperature Reset by remote 4-20 mA signal.
3. Demand Limit by remote 2-stage switch.
4. Demand Limit by remote 4-20 mA signal
5. Dual Set Point by remote switch.
The options module is standard on 30GN040-210 and a s s o c i a t e d m o d u l a r c h i l l e r s a n d i s a v a i l a b l e a s a field-installed accessory on 3OGT225, 250, and 280
Flotronic T” II chillers.
Remember to reconfigure the chiller for each feature selected (see Table 13). For temperature reset, demand limit, and dual set point, desired set points must be entered through keypad and display module (see Set Point Function section on page 39).
See Table 17 for overall troubleshooting information.
L i
:
:
:
N
I
P
U
T
S
J 7
II a
:
* l l l l
: a
: a r
!8
0
T u
P
U
T
S
J6
COMM
P W R
ADDRESS
S W I T C H E S
LEGEND
EEM
- Communications Bus
- Power
Fig. 22 - 4 In/4 Out Module (SIO)
66
SYMPTOMS
COMPRESSOR DOES
NOT RUN
COMPRESSOR CYCLES OFF
ON LOW PRESSURE
COMPRESSOR SHUTS DOWN
~N&-l;l;PFlESSURE
UNIT OPERATES LONG OR
CONTINUOUSLY
SYSTEM NOISES
COMPRESSOR LOSES OIL
FROSTED SUCTION LINE
HOT LIQUID LINE
FROSTED LIQUID LINE
COMPRESSOR DOES NOT
UNLOAD fgF;RESSOR DOES NOT
Table 17 - Troubleshooting
CAUSE
Power line open
Control fuse open
High Pressure Switch (HPS) tripped
Tripped power breaker
L o o s e t e r m i n a l c o n n e c t i o n
Improperly wired controls
Low line voltage
Compressor motor defective
Seized compressor
Loss of charge
Bad transducer
Low refrigerant charge
High-pressure control erratic in action
Compressor discharge valve partially closed
Condenser fan(s) not operating
Condenser coil oluaaed or dirtv
Low refrigerant charge
Control contacts fused
Partially plugged or plugged expansion valve or filter driver
D e f e c t i v e i n s u l a t i o n
Service load
Piping vibration
Expansion valve hissing
Compressor noisy
Leak in system
Mechanical damage (blown piston or broken discharge valve)
Crankcase heaters not energized durina shutdown
Expansion valve admitting excess refrigerant
Shortaae of refriaerant due to leak
Shutoff valve partially closed or restricted
B u r n e d o u t c o i l
Defective capacity control valve
M i s w i r e d s o l e n o i d
Weak, broken, or
wrong valve body spring
M i s w i r e d s o l e n o i d
Defective capacity control valve
Plugged strainer (high side)
Stuck or damaged unloader piston or piston ring(s)
REMEDY
Reset circuit breaker
Check control circuit for ground or short.
R e p l a c e f u s e
Move LOCAL/ENABLE-STOP-CCN switch to STOP position then back to RUN or CCN position.
Check the controls. Find cause of trip and reset breaker
Check connections
Check wiring and rewire.
Check line voltage. Determine location of voltage drop and remedy deficiency
Check motor winding for open or shot-t.
Replace compressor if necessary.
Replace compressor.
Repair leak and recharge
Replace transducer.
Add refrigerant.
Replace control
Open valve or replace if defective.
Check wiring. Repair or replace motor(s) i f d e f e c t i v e .
C l e a n c o i l .
Add refrigerant,
Replace control
Clean or replace
Replace or repair.
Keep doors and windows closed.
Check valves. Replace if necessary.
Support piping as required
Add refrigerant.
Check for plugged liquid line filter drier.
Check valve plates for valve noise.
Replace compressor (worn bearings).
Check for loose compressor holddown bolts.
Repair leak.
Repair damage or replace compressor.
Replace heaters, check wiring and crankcase heater relay contacts.
Check cooler and compressor thermistors.
T e s t E X V .
Repair leak and recharge
Open valve or remove restriction.
R e p l a c e c o i l
Replace valve
Rewire correctly.
R e p l a c e s p r i n g
Rewire correctly
Replace valve.
Clean or replace strainer.
Clean or replace the necessary parts.
67
1
ACCESSORY UNLOADER INSTALLATION
Some of the 30G FlotronicT” II units come standard with unloader(s), and many permit additional unloader(s) to be added if desired. See Table 18.
IMPORTANT: Accessory hot gas bypass cannot be installed with accessory unloaders on units with more than 4 compressors.
If accessory unloaders are desired, an accessory unloader package is used. Package includes a suction cutoff unloader head package. The 24-v coil in the package can be used for
040-l 10, 130 (60 Hz) and associated modular units. A
115 v or 230 v coil must be used for 130 (50 Hz), 150-210,
225, 250, 280, and associated modular units. Coil voltage depends on control circuit voltage, Consult current Carrier price pages for appropriate part numbers.
NOTE: The accessory package will include all necessary components and wiring with the following exceptions: The field must provide screws, and on the 130-2 10, 225, 250,
280, and associated modular units, the field must also supply a 20 vdc (part number HK356ABOOl) unloader relay and wire (90” C or equivalent).
Table 18 - Standard and Accessory Unloaders
I
1 NO. OF ACCESSORY
30GN190-210*
3OGT225,250,280
0
0
Circuit A Circuit B
1
1 or2
1
1 1
1
1 1
*And associated modular units
Installation
1.
Be sure all electrical disconnects are open and tagged before any work begins. Inspect the package contents for any damage during shipping. File a claim with the shipper if damage has occurred.
2.
3.
4.
For ease of installation, factory-supplied wiring for the additional unloader is provided in the compressor harness.
Install the additional unloader cylinder head on the lead compressor, Al or El, according to instructions provided by the compressor manufacturer in the accessory package.
Continue installation per either 040-l 10, 130 (60 Hz) units or 130 (50 Hz), 150-210, 225, 250, and 280 units section as appropriate.
0 4
-0-l 10, 130 (60 Hz) UNITS (and associated modular units)
1.
Wire the solenoid before any field wiring begins. Wiring between components and control box must be enclosed in conduit. All local electrical codes and National
Electrical Code (NEC) must be followed. Factory wires are provided in the compressor harness to connect the solenoid. These wires are in the compressor control box.
2. Wire the control side. Open the left side control box door and remove inner panel. Using the holes provided and field-supplied screws, install field-supplied transformer above the DSIO-LV on the control panel.
3.
4.
Wire the primary side of the transformer in parallel with
TRAN3. See Fig. 23. This supplies transformer with proper line voltage. Be sure to connect proper tap of the transformer to ensure supply of proper secondary voltage.
Wire the secondary side of transformer to DSIO-LV -
J5-9, and a jumper from DSIO-LV - J5-9 to DSIO-LV -
54-9. Wire the secondary common to TB7-2. Connect the transformer ground to ground hole supplied near the transformer. These connections provide DSIO with necessary power to energize the solenoid coils.
When all connections are made, check for proper wiring and tight connections. Replace and secure inner panel.
Restore power to unit.
Configure the processor. With the addition of extra unloaders, the unit configuration has changed. To change the configuration of the processor, enter the service function using the keypad and display module. Before any changes can be made, the LOCAL/ENABLE-STOP-
CCN switch must be in the STOP position, and the servicer must log on to the processor.
a.
b,
Press pJl,,,l* Keypad LCD displays the word
PASSWORD.
p a y s
LOGGEDON.
C.
d.
To change configuration, press m H. Keypad LCD displays FLD CFG.
If an additional unloader was added to compressor
Al, press m until NULA 1 appears in keypad discircuit A. Keypad display now reads NULA 2.
If an additional unloader was added to compressor
B 1, press q until NULB 1 appears in keypad display. Press m bi for the number of unloaders on circuit B. Keypad display now reads NULB 2.
When configuration is complete, press mM. Keypad display reads LOGGEDON. Press m until key-
5.
6.
pad display reads LOG OFF. Press H . Keypad display reads EXIT LOG.
III
2 1 pEsTI. Keypad display reads OUTPUTS. Press I)I until display reads ULA 2 OFF. Press q
. Relay energizes. Press a and relay deenergizes. Press Li_] until display reads
ULB2 OFF. Press H . Relay energizes. Press q and relay deenergizes.
When unloader check has been performed, return LOCAL/
ENABLE-STOP-CCN to proper position. Close and secure control box door.
68
~13014 115v 0R 230y;f;~RO~ S
C H E M A T I
C i
-- 13 6 y
1’
1
!
1 r--‘---------‘-‘-“--“‘-“-----------~
IDS00
(LWl
-9RA
- VI0
I
!
I
I
I
I
1
I
I
L--a---
0
0
0
0
FROM 115V OR 23OV CONTROL SCHEMATIC
T R A N
‘.
\
\
\
\
\ \
\
ERCS
RED-
080-110 (SO/SO Hz) and 130 (60 Hz)
L E G E N D
- Contactor
- Compressor Protection Control System
- Control Relay
Rela Module
- Low u, oltage k z ~~.?ther
- Terminal Block
TL - Transformer
U
- Unloader
Fig. 23 - Accessory Unloader Control Wiring
69
130 (50 Hz), 150-210, 225, 250, AND 280 UNITS (and associated modular units)
1. Install control wiring. The minimum wire size for installation is 16 AWC (American Wire Gage). Refer to
Fig. 24 and 25 for proper wiring. Open the control box door. Locate unloader relays A and B (URA, URB) in place of the hot gas bypass relays as shown on the component arrangement diagram on the unit. Mount the relays with the field-supplied screws. Be careful not to damage the components and wiring in the area when mounting the relays.
2
Wire the control side. Wire the URA coil in series between 56-18 and J6- 19 of the 4 IN/4 OUT module with the wires provided. Wire the URB coil in series between J6-21 and J6-22 of the same module with the wires provided.
Locate the black wire in the control harness originating from TRANS labeled HGBPR-A-COM. Connect this wire to the URA terminal COM. Connect the wire labeled
HGBPR-A-NO to URA-NO. Connect the wire from
URA-NO to TB3-5. For an extra unloader on circuit
B, connect the wire labeled HGBPR-B-COM to UR-B-
COM, and the wire labeled HGBPR-B-NO to URB-
NO. Connect the wire from URB-NO to TB3-6.
3. Wire in the solenoid valves.
NOTE: Wires external to the control box must be run in conduit +
Terminal blocks are provided for easy field wiring. Use one of the isolated ‘/s-in. (22-mm) holes in the side of the compressor electrical box with a strain relief to run the wires to the solenoid coil. Connect URA between
TB3-5 and TB3-8. Connect URB between TB3-6 and
TB3-8. Check all of the electrical connections for proper location and tightness, and replace and secure the electrical box of the compressor,
4. Configure the microprocessor, Once the relays are mounted in the control box, the microprocessor must be configured for the unloader option. ‘To do so: a. Be sure the LOCAL/ENABLE-STOP-CCN switch is in the STOP position.
b. Log into the processor and enter the service funct i o n u s i n g t h e k e y p a d a n d d i s p l a y m o d u l e .
Type r\ I;;;;E] . The keypad LCD will display
“PASSWORD.” Enter ~~1~~~~, and the keypad LCD will display “LOGGEDON. ”
C,
To change the configuration, type 14 H, and the keypad LCD will display “FLD CFG.” Press m until either “NULA 0” or “NULA I” is displayed
(depending on the number of unloaders provided as standard), Then press m H (for 1 unloader on Al) or FiFi (for 2 unloaders on compressor Al). The display will now read either “NULA 1” or d.
‘ ‘NULA 2, ” as appropriate, Press I)I to get to the
NULB display, and change this setting in the same manner as with circuit A.
Once the configuration is complete, press m Fi, and the keypad LCD will display “LOGGEDON,”
Press @ until the keypad LCD display reads “LOG
OFF.” Press H and the keypad LCD will display
“EXIT LOG.”
5
for leaks, and the system is prepared for operation per the instructions for the compressor unloader head installation, check the output of the relays using the test function as follows: a. Press T;1H, and the display will read “COMP.” b. Press the q to scroll down until the display reads
“CPA1 OFF.” and the compressor should start.
and the compressor should stop.
f. Press H , and the solenoid should energize.
g. Press q and the solenoid should deenergize.
h. Use the a and H keys to check the remainder of the unloader coils.
6. Once the check has been performed, return the LOCAL/
ENABLE-STOP-CCN switch to the proper position.
7. Close and secure the control box door.
8. Start the unit and confirm that the chiller operates properly.
COM -
HGBPR -
KB 1
LEGEND
Communications Bus
- Terminal Block
Hot Gas Bypass Relay TLN - Transformer
Normally Open
- Unloader
S n u b b e r kl
- Unloader Relay
Fig. 24 - Flotronic’” II 115/230-V Unloader Wiring, 130 (50 Hz), 150-210, 225, 250, 280
7 0
GdYEL
&
- - - - - - - - cALARncooE31~ -
~gl
1 w m -
43 m
----
I ’
I ’
Fam&& r -
- - - tRoDEn
S W I T C H
{
‘-%F-----
-
~~ I I -
a
Qb
i
- - - ‘ I
I ’
I ’
I ’
I I
’ ! I I
(AIJM CODE 21,301 o(oocm
I r - - - - - - - -
L B qg&#g’ CALAM CWE 211
I ’ ’
l ’
I ’
I 1
I ’
I ’ ; balToysTER -
{
A - -
lmyTEF4 - - - - - -
- - - - - - - - m - w - - - - - - -
’ ] I
- - - - - I - - - - - - - - - - - - - - - - Y - -
I
LEGEND
EB
- Contactor
- Circuit Breaker
5&N
C O M M - Communications Bus UR
- Switch
- Transformer
- Unloader Relay
Fig. 25 - Accessory Unloader Control Wiring, 130 (50 Hz), 150~210,225,250, 280
FIELD WIRING
Refer to Fig, 26 - 36 for field wiring.
-k367
4 IN/4 O U T
M O D U L E
!
i t - 1
J7-2
STAGE 1 1
L v--w _--B-B 0
57-3
-----
- - m - w
57-6
I fl i-
STAGE2 1
L - -
u
J7-7
NOTE: Contacts must be rated for dry circuit application, capable of reliably switching a 5 vdc, 1 mA to 20 mA load
Fig. 26A - Demand Limit - Two External Switch
Inputs, 30GN040-210 and Associated Modular Units
4368
l- ----- -I I ----- cl 4
STAGE 1 1
L - - - - - - - - - - - -cl 5
T B 7
T B 7
STAGE2 1
r e m - - - H - - - - -clI
T B 7
L -------m-_
2
cl
T B 7
TB - Terminal Block
N O T E S :
1 Requires accessory options module package.
2 Contacts must be rated for dry circuit application, capable of reliably switching a 5 vdc,
1
mA to 20 mA load
Fig. 26B - Demand Limit - Two External Switch
Inputs, 30GT225, 250, 280 Units
71
r--
--- --
E X T E R N A L
3OGN040-210 AND ASSOCIATED MODULAR UNITS
u
+
3 m-7
----
4
T B - 7
FLOTRONIC II UNITS 30GT225,250,280
TB - Terminal Block
NOTE: The 30GT225,250,280 Flotronic’” II units require the accessory options module package for this feature
Fig. 27 - Demand Limit - 4-20 mA Signal
(Externally Powered)
--j370
4 IN/4
OUT
MODULE
30GN040-210 AND ASSOCIATED MODULAR UNITS
m-7
--- --cl5
T B - 7
30GT225,250,280 FLOTRONIC II UNITS
TB - Terminal Block
NOTE: The 30GT225,250,280 Flotronic II units require the accessory options module package for this feature.
Fig. 28 - Demand Limit - 4-20 mA Signal
(Internally Powered)
- /$W
4 IN/4
OUT
M O D U L E r 6 3 c l J7-15
1
I,
REMOTE
THERMISTOR
-
-
-
-
-
-
El J7-16
30GN040-210 AND ASSOCIATED MODULAR UNITS l-B-11
TB-11
3OGT225,250,280 FLOTRONIC II UNITS
TB - Terminal Block
NOTE: The 30GT225,250,280 Flotronic II units require the accessory options module package for this feature.
Fig. 29 - Remote Reset from Space or
Outdoor-Air Temperature
FIELD SUPPLIED
LOOP ISOLATOR
J7-13
E X T E R N A L
POWER
37-14
30GN040-210 AND ASSOCIATED MODULAR UNlTS
FIELD SUPPLIED -
LOOP ISOLATOR
+
-
3
u
I-B11
-
-
I I I
FLOTRONIC II UNITS
4
l-E-11
30GT225,250,280
TB - Terminal Block
NOTE:
The 30GT225,250,280 Flotronic II units require the accessory options module package for this feature.
Fig. 30 - Remote Reset from 4-20 mA Signal
(Externally Powered)
-a3
-73
-
J7-13
4-2omA
SIGNAL
GENERATOR
t
-
- El
J7-t4
30GN040-210 AND ASSOCIATED MODULAR UNITS
TB-11
-----
-
I
TE11
FLOTRONIC II UNITS 30GT225,250,280
TB - Terminal Block
NOTE: The 30GT225,250,280 Flotronic II units require the accessory options module package for this feature
Fig. 31 - Remote Reset from 4-20 mA Signal
(Internally Powered)
72
CONTACTS r+ +--A
REMOVE JUMPER
3
T&6
L -
30GNO40-210 AND ASSOCIATED MODULAR UNITS
----
\
-
$
,REMOVE JUMPER
FLOTRONIC I UNITS 30GT225,250,280
---- g3
TB6
T B - 7
10
TE7
TB - Terminal Block
N O T E S :
1 The 30GT225,250,280 Flotronic II units require the accessory options module for this feature.
2. Contacts must be rated for dry circuit application, capable of reliably switching a 5 vdc, 1 mA to 20 mA load
Fig. 32 - Remote On/Off
&-jQ - 13 a--
4 IN/4 OUT
M O D U L E
S W I T C H
,- - m - - - -f-J J7-10
i- - _ _ _ - _-a J7-lf
30GN040-210 AND ASSOCIATED MODULAR UNITS
1
-El TB-11
30GT225,250,280
T B - Terminal Block
--a-
2
-0
TBI1
FLOTRONIC’” II UNITS
NOTE: The 30GT225,250,280 Flotronic II units require the accessory options module for this feature
Fig. 33 - Remote Dual Set Point Control
43 7 6
1 ------
115/23ovv
CWP
cl-
3 -rB$J
- c l
-------_- __-- 4
-t-l
f
30GN040-210 AND ASSOClATED MODULAR UNITS
T5-3
TE5
--v-w 3
El
WI-- u
4 TE5
30GT225,250,280 FLOTRONIC II UNITS
CWP - Chilled Water Pump
T B - Terminal Block
NOTE: The maximum load allowed for the chilled water pump circuit is 125 va sealed, 1250 va inrush at 115 or 230 v
Fig. 34 - Chilled Water Pump
-43 77
I
I -
i
L
ALARM SHUTOFF
S W I T C H
a -
1 TB-3
-cl
------2 T 8 - 3 c l
30GN040-210 AND ASSOCIATED MODULAR UNITS
_d--
---- u
2 TB-5
30GT225,250,280 FLOTRONIC II UNITS
TB - T e r m i n a l B l o c k
NOTE: The maximum load allowed for the alarm circuit is 125 va sealed, 1250 va inrush at 115 or 230 v
Fig. 35 - Remote Alarm
-43 -78
CWPl (CWFS)
;-+--y---- --a TB-6
I - - -
- -
2
TB-6
30GN040-210 AND ASSOCIATED MODULAR UNITS
- - - - -
-El
TB-7
30GT225,250,280
-
8 TE7 u
FLOTRONIC I I UN ITS
CWPI - Chilled Water Pump Interlock
CWFS - Chilled Water Flow Switch (not required - low flow protection is provided by Flotronic II controls)
T B - Terminal Block
NOTE: Contacts must be rated for dry circuit application, capable of reliably switching a 5 vdc, 1 mA to 20 mA load.
Fig. 36 - Interlocks
REPLACING DEFECTIVE
PROCESSOR MODULE
The replacement part number is printed on a small label on front of the PSI0 module. The model and serial numbers are printed on the unit nameplate located on an exterior corner post. The proper software and unit configuration data is factory installed by Carrier in the replacement module. Therefore, when ordering a replacement processor module (PSIO), specify complete replacement part number, full unit model number, and serial number. If these numbers are not provided, the replacement module order is configured instead as a generic Flotronic’” 11 replacement module. This requires reconfiguration of the module by the installer.
7 3
Electrical shock can cause personal injury, Disconnect all electrical power before servicing.
Installation
1.
2.
Verify the existing PSI0 module is defective by using the procedure described in the Control Modules section on page 64.
Refer to Start-Up Checklist for Flotronic II Chiller Systems (completed at time of original start-up) found in job folder. This information is needed later in this
3 .
4 .
5 .
6 .
7 .
procedure. If checklist does not exist, fill out the ri H and Fi F\ configuration code sections on a new checklist. Tailor the various options and configurations as needed for this particular installation.
Check that all power to unit is off. Carefully disconnect all wires from defective module by unplugging the
6 connectors. It is not necessary to remove any of the individual wires from the connectors. Remove the green ground wire.
Remove defective PSI0 by removing its mounting screws with a Phillips screwdriver, and removing the module from the control box, Save the screws for later use.
Use a small screwdriver to set address switches Sl and
S2 on the new PSI0 module to exactly match the settings on the defective module.
Package the defective module in the carton of the new module for return to Carrier.
Mount the new module in the unit control box using a
Phillips screwdriver and the screws saved in Step 4 above.
8. Reinstall all 6 wire connectors and the green ground wire.
9. Carefully check all wiring connections before restoring power.
10. Verify the LOCAL/ENABLE-STOP-CCN switch is in
STOP position
11. Restore control power. Verify the red and green lights on top of PSI0 and front of each DSIO module respond as described in Control Modules section on page 64. The keypad and display module @IS10 or LID) should also begin its rotating display.
12. Using the keypad and display module, press [p-&q, to verify that the software version number matches the
ER (engineering requirement) number shown on the PSI0 label.
codes (CODE 1 through CODE 6) exactly match the codes listed for this unit model on the component arrangement label diagram on the control box door. If they are different or are all zeros, reenter the 6 codes.
If any changes are required, the PSI0 display becomes blank and reconfigures itself after pressing the H key while displaying CODE 6. The display returns in approximately 15 seconds.
NOTE: Codes with leading zeros in the configuration will be displayed starting with the first number greater than zero.
for this particular installation. Table 9 shows the factory configuration code default settings. Table 9 also shows the service replacement code default settings which are used if no model number was specified when ordering the replacement PSI0 module. It is strongly suggested that the Start-Up Checklist for Flotronic’” II Chiller
Systems (completed at time of original start-up) be used at this time to verify and/or reprogram the various options and configurations required for this job.
15. After completing the configuration steps outlined above, restore main power and perform a unit test as described in m H and r;lFl sections on page 38.
16, Complete this procedure and restore chiller to normal operation by returning the LOCAL/ENABLE-STOP-
CCN switch to desired position.
74
Copyright 1994 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2 P C 9 0 3 Catalog No 563-015 Printed in U S A Form 30GN-2T Pg 76 l-94 Replaces: 30GEl,GT-1
30GN-1T
T ,
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Table of contents
- 15 Al .A2.B
- 15 Al .A2.B
- 25 Al ,A2,B
- 25 Al*,A2,A3,A4,Bl*,B
- 25 Al,A2,A3,A4,Bl,B
- 25 A l , B l
- 25 Al,A2,A3,Bl*,B
- 25 Al ,A2,A3,A4,Bl,B
- 73 NOTE: The 30GT
- 73 NOTE: The 30GT
- 73 The 30GT
- 73 NOTE: The 30GT
- 73 1 The 30GT