MAXE TM
ROTARY SCREW LIQUID CHILLERS
OPERATING & MAINTENANCE
Supersedes: Form 160.81-O1 (501)
Form 160.81-O1 (402)
MODEL YR (STYLE A)
WITH OPTIVIEW™ CONTROL CENTER
FOR ELECTRO-MECHANICAL STARTER &
SOLID STATE STARTER
00562VIP
FORM 160.81-O1 (402)
2
YORK INTERNATIONAL
FORM 160.81-O1 (402)
IMPORTANT!
READ BEFORE PROCEEDING!
GENERAL SAFETY GUIDELINES
This equipment is a relatively complicated apparatus.
During installation, operation, maintenance or service,
individuals may be exposed to certain components or
conditions including, but not limited to: refrigerants,
oils, materials under pressure, rotating components, and
both high and low voltage. Each of these items has the
potential, if misused or handled improperly, to cause
bodily injury or death. It is the obligation and responsibility of operating/service personnel to identify and recognize these inherent hazards, protect themselves, and
proceed safely in completing their tasks. Failure to comply with any of these requirements could result in serious damage to the equipment and the property in which
it is situated, as well as severe personal injury or death
to themselves and people at the site.
This document is intended for use by owner-authorized
operating/service personnel. It is expected that this individual possesses independent training that will enable
them to perform their assigned tasks properly and safely.
It is essential that, prior to performing any task on this
equipment, this individual shall have read and understood this document and any referenced materials. This
individual shall also be familiar with and comply with
all applicable governmental standards and regulations
pertaining to the task in question.
SAFETY SYMBOLS
The following symbols are used in this document to alert the reader to areas of potential hazard:
DANGER indicates an imminently
hazardous situation which, if not
avoided, will result in death or serious injury.
CAUTION identifies a hazard which
could lead to damage to the machine,
damage to other equipment and/or environmental pollution. Usually an instruction will be given, together with a
brief explanation.
WARNING indicates a potentially
hazardous situation which, if not
avoided, could result in death or serious injury.
NOTE is used to highlight additional
information which may be helpful to
you.
External wiring, unless specified as an optional connection in the manufacturer’s product
line, is NOT to be connected inside the micro panel cabinet. Devices such as relays, switches,
transducers and controls may NOT be installed inside the micro panel. NO external wiring
is allowed to be run through the micro panel. All wiring must be in accordance with YORK’s
published specifications and must be performed ONLY by qualified YORK personnel. YORK
will not be responsible for damages/problems resulting from improper connections to the
controls or application of improper control signals. Failure to follow this will void the
manufacturer’s warranty and cause serious damage to property or injury to persons.
YORK INTERNATIONAL
3
FORM 160.81-O1 (402)
CHANGEABILITY OF THIS DOCUMENT
In complying with YORK’s policy for continuous
product improvement, the information contained in
this document is subject to change without notice.
While YORK makes no commitment to update or provide current information automatically to the manual
owner, that information, if applicable, can be obtained
by contacting the nearest YORK Applied Systems
Service office.
It is the responsibility of operating/service personnel
as to the applicability of these documents to the equipment in question. If there is any question in the mind
of operating/service personnel as to the applicability
of these documents, then, prior to working on the
equipment, they should verify with the owner whether
the equipment has been modified and if current literature is available.
REFERENCE INSTRUCTIONS
DESCRIPTION
YR
FORM NO.
SOLID STATE STARTER (MOD “B”) – OPERATION & MAINTENANCE
160.00-O2
INSTALLATION
160.81-N1
OPTIVIEW CONTROL CENTER – SERVICE INSTRUCTIONS
160.81-M1
WIRING DIAGRAM – UNIT WITH ELECTRO-MECHANICAL STARTER
160.81-PW1
WIRING DIAGRAM – UNIT WITH MOD “B” SOLID STATE STARTER
160.81-PW2
RENEWAL PARTS – UNIT
160.81-RP1
RENEWAL PARTS – OPTIVIEW CONTROL CENTER
160.81-RP3
TA
TA
T0
–
A
DESIGN LEVEL
POWER SUPPLY
– for 60 Hz
5 for 50 Hz
COMPRESSOR CODE
T0, T1, T2, T3, T4, T5
CONDENSER CODE
TA, TB, TC, TD, TE, TF
XA, XB, XC, XE, XF, XG
ZA, ZB, ZC, ZD, ZE, ZF
COOLER CODE
TA, TB, TC, TD, TE, TF
XA, XB, XC, XE, XF, XG
ZA, ZB, ZC, ZD, ZE, ZF
MOTOR CODE
60 Hz
50 Hz
CF
5CC
CG
5CD
CH
5CE
CJ
5CF
CK
5CG
CL
5CH
CM
5CI
CN
5CJ
CP
5CK
CR
5CL
CS
5CM
CT
5CN
CU
5CO
CV
MODEL
4
YORK INTERNATIONAL
FORM 160.81-O1 (402)
TABLE OF CONTENTS
SECTION
1
Description of System and Fundamentals of Operation.............................. 7
SECTION
2
OptiView Control Center ........................................................................... 13
Introduction .............................................................................................. 13
Control Center .......................................................................................... 14
Interface Conventions ............................................................................... 15
Analog Input Ranges ................................................................................ 17
Home Screen ............................................................................................. 18
System Screen ........................................................................................... 20
Evaporator Screen..................................................................................... 22
Sensitivity Setpoints Screen ..................................................................... 25
Condenser Screen ..................................................................................... 26
Refrigerant Level Control Screen............................................................. 28
Compressor Screen ................................................................................... 30
Hot Gas Bypass Screen ............................................................................. 34
Slide Valve Calibration Screen ................................................................. 36
Oil Separator Screen ................................................................................. 38
Electro-Mechanical Starter Screen ........................................................... 40
Mod “B” Solid State Starter Screen ......................................................... 42
Setpoints Screen ....................................................................................... 44
Setup Screen ............................................................................................. 46
Schedule Screen ........................................................................................ 48
User Screen ............................................................................................... 50
Comms Screen .......................................................................................... 51
Printer Screen ........................................................................................... 52
Sales Order Screen ................................................................................... 53
Operations Screen ..................................................................................... 54
History Screen .......................................................................................... 56
History Details Screen .............................................................................. 58
Security Log Screen .................................................................................. 59
Security Log Details Screen ..................................................................... 60
Custom View Screen ................................................................................ 61
Custom View Setup .................................................................................. 62
Trend Screen ............................................................................................. 64
Trend Setup Screen ................................................................................... 66
Advanced Trend Setup Screen ................................................................. 68
Common Slots Screen .............................................................................. 70
Master Slot Numbers List for Use with Trend Feature ............................ 71
YORK INTERNATIONAL
5
FORM 160.81-O1 (402)
Display Messages ..................................................................................... 74
Status Messages ....................................................................................... 74
Run Messages .......................................................................................... 75
Start Inhibit Messages ............................................................................. 75
Warning Messages ................................................................................... 76
Routine Shutdown Messages ................................................................... 77
Cycling Shutdown Messages ................................................................... 77
Mod “B” Solid State Starter Cycling Shutdown Messages .................... 78
Safety Shutdown Messages ..................................................................... 80
Mod “B” Solid State Starter Safety Shutdown Messages ....................... 82
SECTION
3
Printers ....................................................................................................... 84
LIST OF FIGURES
FIG. 1
– MODEL YR MAXE CHILLER ............................... 7
FIG. 23 – OPERATIONS SCREEN ................................... 54
FIG. 2
– REFRIGERANT FLOW-THROUGH CHILLER ... 8
FIG. 24 – HISTORY SCREEN ........................................... 56
FIG. 3
– CONTROL CENTER .......................................... 14
FIG. 25 – HISTORY DETAILS SCREEN ........................... 58
FIG. 4
– HOME SCREEN ................................................ 18
FIG. 26 – SECURITY LOG SCREEN ................................ 59
FIG. 5
– SYSTEM SCREEN ............................................ 20
FIG. 27 – SECURITY LOG DETAILS SCREEN ............... 60
FIG. 6
– EVAPORATOR SCREEN .................................. 22
FIG. 28 – CUSTOM VIEW SCREEN ................................. 61
FIG. 7
– SENSITIVITY SETPOINTS SCREEN .............. 25
FIG. 29 – CUSTOM VIEW SETUP .................................... 62
FIG. 8
– CONDENSER SCREEN .................................... 26
FIG. 30 – TREND SCREEN ............................................... 64
FIG. 9
– REFRIGERANT LEVEL CONTROL SCREEN . 28
FIG. 31 – TREND SETUP SCREEN ................................. 66
FIG. 10 – COMPRESSOR SCREEN ................................. 30
FIG. 32 – ADVANCED TREND SETUP SCREEN ............ 68
FIG. 11 – HOT GAS BYPASS SCREEN ........................... 34
FIG. 33 – COMMON SLOTS SCREEN ............................. 70
FIG. 12 – SLIDE VALVE CALIBRATION SCREEN .......... 36
FIG. 34 – PRINTERS ......................................................... 84
FIG. 13 – OIL SEPARATOR SCREEN .............................. 38
FIG. 35 – SAMPLE PRINTOUT (STATUS) ....................... 88
FIG. 14 – ELECTRO-MECHANICAL STARTER SCREEN . 40
FIG. 36 – SAMPLE PRINTOUT (SETPOINTS) ................ 90
FIG. 15 – MOD “B” SOLID STATE STARTER SCREEN .. 42
FIG. 37 – SAMPLE PRINTOUT (SCHEDULE) ................. 91
FIG. 16 – SETPOINTS SCREEN ...................................... 44
FIG. 38 – SAMPLE PRINTOUT (SALES ORDER) ........... 92
FIG. 17 – SETUP SCREEN ............................................... 46
FIG. 39 – SAMPLE PRINTOUT (HISTORY) ..................... 93
FIG. 18 – SCHEDULE SCREEN ....................................... 48
FIG. 40 – SAMPLE PRINTOUT
FIG. 19 – USER SCREEN ................................................. 50
(SECURITY LOG REPORT) ............................. 95
FIG. 20 – COMMS SCREEN ............................................. 51
FIG. 41 – SAMPLE PRINTOUT (TREND) ......................... 96
FIG. 21 – PRINTER SCREEN ........................................... 52
FIG. 42 – SAMPLE PRINTOUT – (CUSTOM SCREEN) .. 96
FIG. 22 – SALES ORDER SCREEN ................................. 53
6
YORK INTERNATIONAL
FORM 160.81-O1 (402)
SECTION 1
DESCRIPTION OF SYSTEM AND FUNDAMENTALS OF OPERATION
1
SOLID STATE
STARTER
OIL
SEPARATOR
CONTROL
CENTER
SIGHT GLASS
VARIABLE
ORIFICE
CONDENSER
00562VIP
FIG. 1 – MODEL YR MAXETM CHILLER
SYSTEM OPERATION DESCRIPTION (SEE FIG. 2)
The YORK Model YR MAXE Chiller is applied to large
air conditioning systems, but may be used on other applications. The chiller consists of a hermetic motor connected
to a rotary screw compressor, an oil separator, a condenser,
a cooler and an OptiView Control Center.
of the chiller are automatically displayed and read on a
graphic display. Other displays can be observed by
pressing the keys as labeled on the Control Center. The
chiller with the OptiView Control Center is applied with
an electro-mechanical starter, or YORK Solid State
Starter (optional).
The chiller is controlled by a modern state of the art
Graphic Control Center that monitors its operation. The
Control Center is programmed by the operator to suit
job specifications. Automatic timed start-ups and shutdowns are also programmable to suit nighttime, weekends, and holidays. The operating status, temperatures,
pressures, and other information pertinent to operation
In operation, a liquid (water or brine to be chilled) flows
through the cooler, where boiling refrigerant absorbs heat
from the liquid. The chilled liquid is then piped to fan
coil units or other air conditioning terminal units, where
it flows through finned coils, absorbing heat from the
air. The warmed liquid is then returned to the chiller to
complete the chilled liquid circuit.
TM
YORK INTERNATIONAL
7
Description of System and Fundamentals of Operation
FORM 160.81-O1 (402)
The refrigerant vapor, which is produced by the boiling action in the cooler, flows to the compressor where
rotary screw action compresses it increasing its pressure and temperature and discharges it into the oil separator section which removes the oil before the high pressure gas flows into the condenser tube bundle. Water
flowing through the condenser tubes absorbs heat from
the refrigerant vapor, causing it to condense. The condenser water is supplied to the chiller from an external
source, usually a cooling tower. The condensed refrigerant drains from the condenser into the liquid return
line, where the variable orifice meters the flow of liquid refrigerant to the cooler to complete the refrigerant
circuit.
The major components of a chiller are selected to handle
the refrigerant, which would be evaporated at full load
design conditions. However, most systems will be called
upon to deliver full load capacity for only a relatively
small part of the time the unit is in operation.
CAPACITY CONTROL
The major components of a chiller are selected for full
load capacities, therefore capacity must be controlled
to maintain a constant chilled liquid temperature leaving the cooler. A slide valve arrangement located on
the rotary screw compressor compensates for various
load conditions. The slide valve arrangement is controlled by the OptiView Control Center and unit controls that sense the building load conditions. The control center sends signals to the solenoid valve that loads
and unloads the slide valve with the use of compressor
oil under hydraulic pressure. A cylinder located in the
inlet end of the compressor houses a spring loaded shaft
and pistons (slide valve) which is fed through its ports
by pressurized compressor oil. The flow of the oil is
controlled by the equalizing solenoid valve which modulates to load and unload the slide valve that increases
or decreases the amount of refrigerant flowing to the
compressor, thus controlling the chiller capacity.
LD04976
FIG. 2 – REFRIGERATION FLOW THROUGH ROTARY SCREW CHILLER
8
YORK INTERNATIONAL
FORM 160.81-O1 (402)
CHILLER OPERATION OVERVIEW
In the following description, reference is made to procedures that should be performed only by a Service
Technician. Instructions for these procedures are in
YORK Service Manual 160.81-M1 and require Service
access level.
The chiller will be permitted to start only if there are
no Safety or Cycling shutdown condition in effect and
the slide valve position is < 30%.
When a Local or Remote start signal is applied, the
“Start Sequence Initiated” period begins. The duration
of this period depends on whether or not the Refrigerant Level Control feature is Enabled. If the Refrigerant
Level Control feature is Disabled, the duration is 30
seconds. If the Refrigerant Level Control is Enabled,
the duration is programmable over the range of 30 to
120 seconds with the Valve Preset Time Setpoint. The
variable Orifice must be positioned to the 75% closed
position prior to starting the compressor motor. Since
it is in the fully open position while the chiller is shutdown, the valve is driven to the 75% closed position
during the “Start Sequence Initiated” period. Due to
variances in Orifice actuator timing and valve position
requirements for the different chiller/compressor combinations, the “Start Sequence Initiated” period duration must be adjusted to allow the Orifice to reach the
75% closed position prior to starting the compressor
motor. “Start Sequence Initiated” is displayed on the
Display System Status Line along with a countdown
timer indicating time remaining while the period is in
effect.
During the first 15 seconds of the “Start Sequence Initiated” period, the pressure transducer Auto-Zeroing
(if enabled) is performed. The Oil Supply Solenoid valve
is energized (opened) for this 15 second period; closed
thereafter until “System Run”.
To compensate for Transducer differences and assure
differential pressure accuracy, the transducer outputs
that are involved in creation of differential values are
compared in the Auto-Zeroing process. During this period, the output of both transducers that are creating
the differential pressure are compared to determine the
offset between them. Since system pressures should be
equalized during this period, both transducers will be
sensing the same pressure and their outputs should indicate the same pressure. However, to compensate for
differences between transducers and assure differential pressure accuracy, this offset is added or subtracted
YORK INTERNATIONAL
from the actual differential pressure during System Run
to produce the displayed differential value. For example,
the displayed “Differential Oil Pressure” is the result
of subtracting the output of the Evaporator Transducer
from the Oil Transducer. If the Oil Pressure transducer
indicates 1.0 PSIG greater than the Evaporator transducer during the auto-zeroing period, then 1.0 PSIG
will be subtracted from the displayed PSID value during system run. Similarly, if the Oil Pressure Transducer
indicates 1.0 PSIG less than the Evaporator Transducer
during the this period, then 1.0 PSIG is added to the
displayed PSID value during system run. In certain applications, the Auto-Zeroing might have to be disabled.
Only a Service Technician should disable this feature.
After the 15 second Auto-zeroing period has elapsed,
the Oil Supply Solenoid Valve is de-energized (closed)
for the remainder of the Start Sequence Period. The
Chilled Liquid Flow Switch position is checked 5 seconds before the end of the “Start Sequence Initiated”
period. If not closed, a Cycling shutdown is performed.
At the completion of the start sequence, the Oil Supply
Solenoid Valve is energized (opened), “SYSTEM RUN”
is displayed and the start signal is applied to the compressor motor starter.
Upon entering System Run, a continuous load signal is
applied to the slide valve actuator until the Slide Valve
position is > 25%. This more rapidly increases system
pressure differential to facilitate oil flow through the
compressor. During the first 3 minutes of System Run,
the Slide Valve position is maintained at a minimum of
25%. If the position decreases to 22%, a load signal is
applied until the position is again > 25%. Also during
the first 3 minutes of “System Run”, the Variable Orifice position is maintained at the 75% closed position
and controlled thereafter as described below.
After the chiller has been running for > 3 minutes, the
Slide Valve minimum position must be maintained to
that which will provide enough oil flow through the
compressor to maintain sufficient oil level in the Oil
Separator. There are two different selectable methods
that can be employed as the Minimum Load Control
Source: Slide Valve or Motor FLA. If “Slide Valve”
is selected, the minimum allowed slide valve position
is fixed at 15%. If “Motor FLA” is selected, the minimum allowed position is that which will maintain the
compressor motor current above the programmed
“Minimum Load FLA” Setpoint (15% to 70% FLA).
The MINIMUM LOAD CONTROL SOURCE and associated setpoints are programmed by a Service Tech9
1
Description of System and Fundamentals of Operation
FORM 160.81-O1 (402)
nician. Regardless of which method is in control, if the
slide Valve position decreases to < the minimum allowed position, a 1 second load pulse is applied every
3 seconds until it meets the minimum allowed position.
While the Slide Valve unloading is inhibited, MINIMUM LOAD – LOAD LIMIT” is displayed.
After the chiller has been running for > 3 minutes, the
Slide Valve is loaded and unloaded to control the Leaving Chilled Liquid Temperature to the Leaving Chilled
Liquid Temperature Setpoint (as explained later, there is
no unloading in Ice storage Mode). The SENSITIVITY
Setpoints can be adjusted by a Service Technician to reduce over/under-shoot of the Chilled Liquid Setpoint and
adapt the control to the local operating conditions.
The following Load Limiting conditions will override
the normal leaving chilled liquid temperature control.
The message displayed for each condition is in parenthesis. Refer to DISPLAY MESSAGES section of this
book for details of each limit.
• Low Evaporator Pressure (“Warning – Evaporator –
Low Pressure Limit”)
• High Condenser Pressure (“Warning – Condenser –
High Pressure Limit”)
• High Motor current (“Motor-High Current Limit”)
• Low Discharge Superheat (“Warning – Low Discharge Superheat Limit”)
• High Discharge Pressure (“Warning – Discharge –
High Pressure Limit”)
The Slide Valve can be manually controlled by a Service Technician from the COMPRESSOR Screen using the Keypad keys. The Slide Valve position will be
shown as XXX% until the Slide valve calibration is
performed by a Service Technician.
To provide oil cooling, liquid refrigerant is injected into
the compressor during high Oil/Discharge Temperature
conditions. When the Oil/Discharge Temperature increases to the programmed Liquid Injection Setpoint
threshold, a solenoid valve is opened, injecting liquid
refrigerant into the compressor. This setpoint is programmable by a Service Technician over the range of
130 to 165°F. When the Oil/Discharge Temperature
decreases to 10°F below this setpoint, the solenoid valve
is closed.
To prevent overcooling the building or process, the
chiller will shutdown and display “LEAVING
CHILLED LIQUID – LOW TEMPERATURE” when
10
the Leaving Chilled Liquid Temperature decreases to <
the programmed Leaving Chilled Liquid Temperature Cycling Offset-Shutdown setpoint. After it has
shutdown, the chiller is prevented from restarting until
the Leaving Chilled Liquid Temperature has increased
to > the programmed Leaving Chilled Liquid Temperature Cycling Offset-Restart setpoint. This prevents short cycling the chiller.
The chiller can cool WATER or a BRINE solution.
Water can be cooled over a range of 38.0º to 70.0ºF. If
Smart Freeze protection (explained below) is enabled,
the range is 36.0º to 70.0ºF. Brine solution can be cooled
over a range of 20.0º to 70.0ºF.
Ice Storage mode is an operating mode within Brine
mode that allows the chiller to make ice at a faster than
normal rate by inhibiting unload pulses to the Slide
Valve. Load pulses are applied until the Leaving Chilled
Liquid Temperature Cycling Offset-Shutdown threshold is reached, whereupon the chiller shuts down. No
unload pulses or hold outputs are applied to the Slide
Valve unless any of the following Load Limit conditions exist: Low Evaporator Pressure, High Condenser
Pressure, High Motor Current or Low Discharge Superheat. The chiller will automatically restart when the
Ice Storage Restart threshold is exceeded. Ice storage
mode is turned ON from the Evaporator Screen. After it
is turned ON, Ice Storage mode is automatically Activated (inhibits unload pulses) and Deactivated (allows
unload pulses) by the value programmed for the Leaving
Chilled Liquid Temperature Setpoint. Values < 32.0ºF
Activates Ice Storage mode. Setpoint values > 32.0ºF
Deactivate Ice storage Mode. An LED on the Evaporator Screen illuminates when Ice Storage mode is Active.
This allows the chiller to be switched in and out of Ice
Storage mode by a Local or Remote change of this
setpoint. This feature allows the chiller to make ice in
the nighttime hours and perform air-conditioning duty
during the daytime hours simply by changing the Leaving Chilled Liquid Temperature Setpoint. When Ice storage is turned ON, there are two different Restart Setpoints
employed: One is programmed and will be in effect when
the Leaving Chilled Liquid Temperature Setpoint is <
32.0ºF (Ice Storage mode Active), the other is programmed and will be in effect when the setpoint is >
32.0ºF (Ice Storage mode Not Active). Each Restart setpoint can be programmed to a different value.
To prevent nuisance shutdowns due to brief periods of
chilled liquid flow fluctuations or other brief operating
conditions that would normally cause Low Evaporator
Pressure safety shutdowns, the Smart Freeze protecYORK INTERNATIONAL
FORM 160.81-O1 (402)
tion feature can be enabled by a Service Technician.
With this feature enabled and activated, the chiller is
permitted to ride through these temporary conditions.
The basis of this feature is that the chilled liquid contains a certain amount of heat that cannot be eliminated
immediately. It requires a certain amount of time for
solidification to occur. During this period of time, the
Evaporator Refrigerant Temperature is used as one of
the variables to determine when solidification will occur and an appropriate Low Evaporator Temperature
shutdown threshold is applied. This threshold could be
lower, but not higher than the normal Safety threshold.
This feature also allows the Leaving Chilled Liquid
Temperature Setpoint to be set as low as 36.0º F. If set
to < 38.0º F, the Low Chilled Liquid Temperature Cycling shutdown threshold becomes a minimum of 34.0º
F. After being enabled by a Service technician, Smart
Freeze is activated when the leaving Chilled Liquid
Temperature is set to < 38.0º F. Once activated, the total number of seconds the Evaporator Refrigerant Temperature is below the freeze threshold is counted. If this
accumulated time exceeds the maximum allowed, a
safety shutdown is performed and “EVAPORATORLOW PRESSURE-SMART FREEZE” is displayed.
Smart Freeze cannot be used in Brine cooling mode. A
complete description of this feature is contained in
YORK Service Manual 160.81-M1.
Since liquid refrigerant is transferred from the Condenser to the Evaporator via the Condenser-Evaporator
pressure differential, a large differential can create an
excess refrigerant level in the evaporator. A small differential can result in insufficient level in the Evaporator. To maintain an appropriate refrigerant level in the
Evaporator under all conditions, the chiller is equipped
with a Variable Orifice. To maintain an appropriate
refrigerant level in the evaporator under all conditions,
a Variable Orifice is located in the refrigerant line between the condenser and evaporator. A liquid level sensor, located in the condenser, detects the refrigerant
level. The refrigerant level in the condenser is expressed
as 0% (minimum) to 100% (maximum). While the
chiller is shutdown, an open signal is applied to the
actuator, driving the orifice to the fully open position.
When the chiller is started, a close signal is applied to
the Orifice actuator for the duration of the “Start Sequence Initiated” period. This positions it to approximately the 75% closed position prior to starting the
compressor motor, which occurs at the end of the “Start
Sequence Initiated” period. To allow for actuator timing variances and assure the valve is positioned at the
75% closed position, the duration of the “Start Sequence
Initiated” period is programmable over the range of 30
to 120 seconds with the Valve Preset Time setpoint.
YORK INTERNATIONAL
This position is held for the first 3 minutes of “System
Run”. After the first 3 minutes, if the actual level is
greater than or less than the setpoint, a linearly increasing or decreasing ramp is applied to the Level setpoint.
This ramp causes the setpoint to increase or decrease
(as appropriate) from the actual position to the programmed setpoint over a period of 15 minutes. During
the remainder of chiller run, the actuator is modulated
to maintain the programmed Level Setpoint. This setpoint and others that affect this operation are programmed by the Service Technician on the Refrigerant
Level Control Screen. The orifice can be manually operated from the keypad, using this screen. The Refrigerant Level Control must be Enabled by a Service Technician. A complete description of the Refrigerant level
Control operation are contained in Service Manual
160.81-M1.
An optional Hot Gas Bypass system allows the chiller
to remain running during extreme light load conditions
by diverting hot refrigerant gas directly from the Oil
Separator to the Evaporator, bypassing the Condenser.
A solenoid Valve, located in the bypass line, is opened
and closed under Program control to turn the hot gas
on and off. When the chiller is shutdown, the Hot gas
Bypass is turned off. Each time the chiller is started, it
remains off for the first 3 minutes of chiller operation.
Thereafter, it is controlled per the differential between
the Return Chilled Liquid temperature and the Leaving
Chilled Liquid Temperature Setpoint. This differential
is programmed as the Hot Gas ON and Hot Gas OFF
setpoints by a Service Technician. If the chiller is
equipped with the Hot Gas feature, operation must be
enabled by a Service technician. A complete description of the Hot Gas Bypass system is contained in
YORK Service Manual 160.81-M1.
Since the chiller is not allowed to start until the Slide
Valve position is <30%, it is unloaded to <30% prior to
shutting down on the following routine shutdowns. The
presence of oil pressure while the chiller is operating
facilitates the unloading. This minimizes the time delay between starts. To assure mechanical problems cannot prevent a chiller shutdown, if the Slide Valve has
not unloaded to < 30% within 210 seconds of receiving
a shutdown command, a shutdown occurs, regardless
of Slide Valve position.
• “Multi-Unit Cycling-Contacts Open”
• “System Cycling-Contacts Open”
• “Remote stop”
• “Leaving Chilled Liquid-Low Temperature”
• “Control Panel-Schedule”
11
1
Description of System and Fundamentals of Operation
FORM 160.81-O1 (402)
In multiple chiller applications it may be possible for the
chilled liquid (Water or Brine) from an operating chiller
to flow through the Evaporator of a standby chiller. This
represents a possible freeze threat to the Condenser of
the standby chiller. The Standby Chiller Freeze Protection feature minimizes this freeze potential by allowing the OptiView Control Center of the standby chiller
to cycle the Condenser Pump based on the standby
chiller’s Condenser Saturation Temperature while it is
shutdown. At chiller shutdown, the pump runs until the
condenser saturation temperature increases to >35.0ºF,
whereupon the pump is turned off. While the chiller is
shutdown, the condenser saturation temperature is moni-
12
tored. If it decreases to < 30.0ºF, the pump is turned on
and runs until the temperature increases to > 35.0ºF. After the chiller has been shutdown for at least the time
delay programmed as the Freeze time Setpoint, and the
temperature decreases to < 28.0ºF, “WARNING –
FREEZE THREAT FROM OPERATING CHILLER” is
displayed and alarm output is activated. When the temperature increases to 28.0ºF, the warning message and
alarm output automatically clear. If this feature is desired, Freeze Warning must be enabled by a Service
Technician. A complete description of this feature is contained in the YORK Service Manual 160.81-M1.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
SECTION 2
OPTIVIEW CONTROL CENTER
INTRODUCTION
The YORK OptiView Control Center is a microprocessor based control system for R134a screw chillers.
It controls the leaving chilled liquid temperature via
slide valve controls and has the ability to limit motor
current via control of the slide valve. Further, it is compatible with the YORK Solid State Starter (optional),
and Electro-Mechanical starter applications.
The panel comes configured with a full screen LCD
Graphic Display mounted in the middle of a keypad
interface. The graphic display allows the presentation
of several operating parameters at once. In addition,
the operator may view a graphical representation of the
historical operation of the chiller as well as the present
operation. For the novice user, the locations of various
chiller parameters are clearly and intuitively marked.
Instructions for specific operations are provided on
many of the screens.
The graphic display also allows information to be represented in both English (temperatures in °F and pressures in PSIG) and Metric (temperatures in °C and pressures in kPa) mode. The advantages are most apparent,
however, in the ability to display many languages.
The Control Center continually monitors the system
operation and records the cause of any shutdowns
(Safety, Cycling or Normal). This information is recorded in memory and is preserved even through a
power failure condition. The user may recall it for viewing at any time. During operation, the user is continually advised of the operating conditions by various status and warning messages. In addition, it may be configured to notify the user of certain conditions via
alarms. A complete listing of shutdown, status, and
warning messages is attached in the Display Messages
section of this book.
There are certain screens, displayed values, programmable Setpoints and manual control shown in this book
that are for Service Technician use only. They are only
YORK INTERNATIONAL
displayed when logged in at SERVICE access level or
higher. The Setpoints and parameters displayed on these
screens are explained in detail in YORK Service Manual
160.81-M1. These parameters affect chiller operation and should NEVER be modified by anyone other
than a qualified Service Technician. They are shown
in this book for reference only.
Advanced Diagnostics and troubleshooting information
for Service Technicians are included in YORK Service
Manual 160.81-M1. Also included in the Service manual
are detailed descriptions of chiller features, such as the
Refrigerant Level Control, Hot Gas Bypass, Remote
Setpoints, and Smart Freeze Protection.
The control center expands the capabilities of remote
control and communications. By providing a common
networking protocol through the MicroGateway, YORK
Chillers not only work well individually, but also as a
team. This new protocol allows increased remote control of the chiller, as well as 24-hour performance monitoring via a remote site. In addition, compatibility is
maintained with the present network of ISN communications. The chiller also maintains the standard digital
remote capabilities as well. Both of these remote control capabilities allow for the standard Energy Management System (EMS) interface:
1. Remote Start
2. Remote Stop
3. Remote Leaving Chilled Liquid Temperature
Setpoint adjustment (0-20mA or 4-20mA, 0-10VDC
or 2-10VDC) or Pulse Width Modulation
4. Remote Current Limit Setpoint adjustment (0-20mA
or 4-20mA, 0-10VDC or 2-10VDC) or Pulse Width
Modulation
5. Remote “Ready to Start” Contacts
6. Safety Shutdown Contacts
7. Cycling Shutdown Contacts
13
2
OptiView Control Center
FORM 160.81-O1 (402)
CONTROL CENTER
FIG. 3
The OptiView Control Center display is highlighted by
a full screen graphics display. This display is nested
within a standard keypad, and is surrounded by “soft”
keys which are redefined based on the currently displayed screen. Eight buttons are available on the right
side of the panel, and are primarily used for navigation
between the system screens. At the base of the display
are 5 additional buttons. The area to the right of the
keypad is used for data entry with a standard numeric
keypad provided for entry of system setpoints and limits.
The Decimal key provides accurate entry of
setpoint values.
A +/- key has also been provided to allow entry
of negative values and AM/PM selection during time entry.
In order to accept changes made to the chiller
setpoints, the Check key is provided as a universal ‘Enter’ key or ‘Accept’’ symbol.
In order to reject entry of a setpoint or dismiss
an entry form, the ‘X’ key is provided as a universal ‘Cancel’ symbol.
Cursor Arrow keys are provided to allow movement on
screens which contain a large
amount of entry data. In addition, these keys can be used to
scroll through history and event
logs.
The Start/Stop control is operated via a three-position
rocker switch. When toggled all the way to the right, it is
14
00565VIP
considered in the STOP/RESET position. When in the
middle position, this is considered the RUN state. When
toggled to the left-most position, it is considered in the
START state. Each state is described in detail below:
• STOP / RESET (O)
When in this position, the chiller will not run under any condition. For safety reasons, this position
is required for many maintenance tasks to be completed. In addition, the switch must be placed in
this state following a Safety shutdown before the
chiller is allowed to restart. This guarantees that
manual intervention has taken place and the shutdown has been acknowledged.
•)
• START (•
The switch can only remain in this position when
being acted upon by a manual force. Once the user
has released the switch, it automatically reverts to
the RUN position. Generally, this state only occurs
momentarily as the operator attempts to locally start
the unit. Once this position has been sensed, if all
fault conditions are cleared, the unit will enter the
“Start Sequence Initiated” cycle.
• RUN ( )
When in this position, the chiller is able to operate.
The switch spring-returns to this state after it has
been toggled to the START position. When in this
state, the chiller is allowed to function normally, and
will also allow the chiller to automatically restart
following a Cycling shutdown. The switch must be
in this state to receive a valid remote start signal
when operating under a remote control source.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
INTERFACE CONVENTIONS
OVERVIEW
The new graphical display on each control panel allows a wide variety of information to be presented to
the user. Each screen description in this document will
begin with a section entitled Overview which will describe the graphical elements on the screen and give a
short summary of the functions available. Each element
on the screen will then be categorized into three distinct groups: Display Only, Programmable, and Navigation. Below is a short description of what types of
information are included in these groups.
The Programmable values and Navigation commands
are also subject to access level restrictions as described
below. For each of these elements, an indication is given
to show the minimum access level required to program
the value or navigate to the sub-screen.
must return to the Home Screen (shown by default
when power is applied to the system), and use the
LOGIN button or utilize the CHANGE SETPOINTS
key described below. At this point, the user will be
prompted to enter a User ID and the corresponding Password. By default, the User ID is zero (0). In order to
gain standard OPERATOR level access, the Password
would be entered as 9 6 7 5, using the numeric keypad.
OPERATOR access reverts to the VIEW level after
10 continuous minutes without a keypress. If a custom
User ID and Password have been defined (see User
Screen), the user may enter that User ID and the corresponding Password value.
If the correct password is received, the user is authorized with the appropriate Access Level. If an incorrect
password is entered, the user is notified of the failure
and prompted again. At this point the user may retry
the password entry, or cancel the login attempt.
DISPLAY ONLY
Values in this group are read-only parameters of information about the chiller operation. This type of information may be represented by a numerical value, a text
string, or an LED image. For numerical values, if the
monitored parameter is above the normal operating
range, the high limit value will be displayed along with
the ‘>’ symbol; if it is below the normal operating range,
the low limit value will be displayed along with the ‘<’
symbol. In some cases, the value may be rendered invalid by other conditions and the display will use X’s
to indicate this.
PROGRAMMABLE
Values in this group are available for change by the
user. In order to program any setpoints on the system,
the user must first be logged in with the appropriate
access level. Each of the programmable values requires
a specific Access Level which will be indicated beside
the specified value. All of the programmable controls
in the system fall into one of the categories described
below:
YORK INTERNATIONAL
Setpoints
The control center uses the setpoint values to control
the chiller and other devices connected to the chiller
system. Setpoints can fall into several categories. They
could be numeric values (such as 45.0°F for the Leaving Chilled Liquid Temperature), or they could Enable
or Disable a feature or function.
Regardless of which setpoint is being programmed, the
following procedure applies:
1. Press the desired setpoint key. A dialog box appears
displaying the present value, the upper and lower
limits of the programmable range, and the default
value.
2. If the dialog box begins with the word “ENTER”,
use the numeric keys to enter the desired value.
Leading zeroes are not necessary. If a decimal point
is necessary, press the ‘•’ key (i.e. 45.0).
Pressing the • key, sets the entry value to the default for that setpoint. Pressing the – key, clears
the present entry. The key is a backspace key and
causes the entry point to move back one space.
–
Access Level
In order to program any setpoints on the system, the
user must first login with an appropriate access level.
When power is applied to the chiller, the system begins
with an Access Level of VIEW. This will allow the
user to navigate to most screens and observe the values
displayed there. However, the user will not be allowed
to change any values. To change any values, the user
Change Setpoints
On screens containing setpoints programmable at the
OPERATOR access level, a key with this label will be
visible if the present access level is VIEW. This key
brings up the Access Level prompt described above. It
allows the user to login at a higher Access Level without returning to the Home Screen. After login, the user
may then modify setpoints on that screen.
15
2
OptiView Control Center
–
–
If the dialog box begins with “SELECT”, use the
and
keys to select the desired value.
If the previously defined setpoint is desired, press
the ‘X’ (Cancel) key to dismiss the dialog box.
3. Press the ‘T’ (Enter) key.
If the value is within range, it is accepted and the
dialog box disappears. The chiller will begin to operate based on the new programmed value. If out of
range, the value will not be accepted and the user is
prompted to try again.
FORM 160.81-O1 (402)
Home Screen (page 18)
System Screen (page 20)
Evaporator (page 22)
Sensitivity Setpoints (page 25)
Condenser (page 26)
Refrigerant Level Control (page 28)
Compressor (page 30)
Hot Gas Bypass (page 34)
Manual Controls
Some keys are used to perform manual control functions. These may involve manual control of items such
as the slide valve. Other keys in this category are used
to initiate/terminate processes such as calibrations or
reports.
Free Cursor
On screens containing many setpoints, a specific “soft”
key may not be assigned to each setpoint value. A soft
key will be assigned to enable the cursor arrow keys
below the numeric keypad which are used to “highlight”
the desired setpoint field. At this point, the ‘T’ key is
pressed to bring up a dialog prompting the user to enter
a new setpoint value. The ‘X’ key cancels cursor mode.
(See the Schedule Screen [page 48] for an example.)
NAVIGATION
In order to maximize the amount of values which the
panel can display to the user, and in order to place those
values in context, multiple screens have been designed
to describe the chiller operation. In order to move from
one screen to the next, navigation keys have been defined. These keys allow the user to either move “forward” to a sub-screen of the present screen, or move
“backward” to the previous screen. Except for the Home
Screen display, the upper-right “soft” key will always
return the user to the Home Screen. Navigating with
“soft” keys is as simple as pressing the key next to the
label containing the name of the desired screen. The
system will immediately refresh the display with the
graphics for that screen. Following is a layout of all the
screens and how they are connected.
Slide Valve Calibration (page 36)
Oil Sump (Separator) (page 38)
Motor (page 40)
EM Starter Version (page 40)
Mod “B” Solid State Starter (page 42)
Setpoints (page 44)
Setup (page 46)
Schedule (page 48)
User (page 50)
Comms (page 51)
Printer (page 52)
Sales Order (page 53)
Operations (page 54)
Diagnostics (Refer to YORK
Service Manual 160.81-M1)
History (page 56)
History Details (page 58)
Security Log (page 59)
Security Log Details (page 60)
Custom View (page 61)
Custom Setup (page 62)
Trend (page 64)
Trend Setup (page 66)
Advanced Trend Setup (page 68)
Common Slots (page 70)
16
YORK INTERNATIONAL
FORM 160.81-O1 (402)
LANGUAGES
The Screens can be displayed in various languages. Language selection is done on the USER Screen. The desired language is selected from those available. Not all
languages are available. English is the default language.
If a language other than English is being displayed, an
English-only speaking person should navigate to the
USER Screen using the preceding Navigation chart and
select English per the USER Screen instructions in this
book.
2
ANALOG INPUT RANGES
The following table indicates the valid display range for each of the analog input values. In the event that the input
sensor is reading a value outside of these ranges, the < or > symbols will be displayed beside the minimum or
maximum value, respectively.
ANALOG INPUT
Leaving Chilled Liquid Temperature
Return Chilled Liquid Temperature
Leaving Condenser Liquid Temperature
Return Condenser Liquid Temperature
Evaporator Refrigerant Temperature
Discharge Temperature
Condenser Pressure
Discharge Pressure
Drop Leg Refrigerant Temperature
Refrigeration Level
Condenser Temperature
Evaporator Pressure
Evaporator Temperature
Oil Pressure
ENGLISH RANGE
LOW
HIGH
UNITS
0.0
82.0
°F
0.0
94.1
°F
8.0
133.5
°F
8.0
133.5
°F
0.0
126.1
°F
31.8
226.3
°F
0.0
315.0
PSIG
0.0
315.0
PSIG
0.0
121.7
°F
0.0
100.0
%
-98.7
160.1
°F
5.5
77.4
PSIG
-44.9
64.7
°F
0.0
315.0
PSIG
LOW
-17.7
-17.7
-13.3
-13.3
-17.7
-0.1
0.0
0.0
-17.7
0.0
-72.6
37.9
-42.7
0.0
METRIC RANGE
HIGH
UNITS
27.7
°C
34.5
°C
56.3
°C
56.3
°C
52.3
°C
107.9
°C
2172.4
KPAG
2172.4
KPAG
49.8
°C
100.0
%
71.7
°C
533.7
KPAG
18.1
°C
2172.4
KPAG
*Saturation temperatures are calculated values. They will display XXX if the pressure used for the calculation is out of range.
YORK INTERNATIONAL
17
OptiView Control Center
FORM 160.81-O1 (402)
HOME SCREEN
FIG. 4
OVERVIEW
When the chiller system is powered on, the above default display appears. The primary values which must
be monitored and controlled are shown on this screen.
The Home Screen display depicts a visual representation of the chiller itself. Animation indicates chilled liquid flow.
DISPLAY ONLY
Chilled Liquid Temperature - Leaving
Displays the temperature of the liquid as it leaves the
evaporator.
Chilled Liquid Temperature - Return
Displays the temperature of the liquid as it enters the
evaporator.
Condenser Liquid Temperature - Leaving
Displays the temperature of the liquid as it leaves the
condenser.
Condenser Liquid Temperature - Return
Displays the temperature of the liquid as it enters the
condenser.
Motor Run (LED)
Is ON when the digital output controlling the Motor
Starter contact is on.
18
00551VIP
% Full Load Amps
This displays the percentage of full load amps utilized
by the system.
Operating Hours
Displays the cumulative operating hours of the chiller.
PROGRAMMABLE
Login
Access Level Required: VIEW
The Control Center restricts certain operations based
on password entry by the operator. Three different access levels are provided as follows: VIEW: The panel
defaults to the lowest access level which is termed
VIEW. In this mode, the chiller operating values and
setpoints can be observed, but no changes can be made.
OPERATOR: The second access level is termed OPERATOR and will allow the customer to change all of
the setpoints required to operate the chiller system. The
OPERATOR access level reverts to the VIEW level
after 10 continuous minutes without a keypress. SERVICE: In the event that advanced diagnostics are necessary, a SERVICE access level has been provided.
Only qualified service personnel utilize this access level.
This level provides advanced control over many of the
chiller functions and allows calibration of many of the
chiller controls. The access levels are listed above in
hierarchical order beginning with the lowest level and
proceeding to the highest level. Users logged in under
YORK INTERNATIONAL
FORM 160.81-O1 (402)
higher access levels may perform any actions permitted by lower access levels.
The OPERATOR access level is accompanied by a
10-minute timeout. After ten (10) successive minutes
without a keypress, the panel will revert to the VIEW
access level. This prevents unauthorized changes to the
chiller if a user was logged in at a higher access level
and failed to logout. Proper procedure requires that after making necessary setpoint adjustments the user return to the Home Screen and logout.
Logout
Access Level Required: OPERATOR
This key is displayed when a user is logged in at any
level other than VIEW. Pressing it will return the access level to VIEW.
Print
Access Level Required: VIEW
Use this key to generate a hard-copy report of the present
system status. This provides a snapshot of the primary
operating conditions at the time the key is pressed. The
History page provides enhanced reporting capability.
(See HISTORY below.)
Message Clear
Access Level Required: SERVICE
When certain safety or cycling conditions have been
detected and the chiller has been shutdown, the main
status display of the chiller will continue to display a
message indicating the cause of the shutdown. Using
this key, the message can be cleared once the condition
has been removed.
Warning Reset
Access Level Required: OPERATOR
Use of this key acknowledges a warning condition and
resets the message display associated with it.
YORK INTERNATIONAL
NAVIGATION
System
Used to provide additional system information.
Evaporator
A detailed view of all evaporator parameters, including
the programmable Leaving Chilled Liquid Setpoints.
Condenser
A detailed view of all condenser parameters.
Compressor
A detailed view of all the compressor parameters. This
includes slide valve control, and Hot Gas Bypass Control and slide valve calibration.
Oil Sump
A detailed view of all the oil sump parameters. This
includes the Seal Lubrication functionality.
Motor
A detailed view of the motor controller parameters, specific to the controller type presently utilized on the
chiller system. This allows programming of the Current Limit and the Pulldown Demand Limit values.
Setpoints
This screen provides a single location to program the
most common system setpoints. It is also the gateway
to many of the general system setup parameters such as
Date/Time, Display Units, Scheduling, Printer Setup,
etc.
History
This screen provides access to a snapshot of system
data at each of the last 10 shutdown conditions.
19
2
OptiView Control Center
FORM 160.81-O1 (402)
SYSTEM SCREEN
FIG. 5
OVERVIEW
This screen gives a general overview of common chiller
parameters for both shells.
DISPLAY ONLY
Discharge/Oil Temperature
Displays the temperature of the refrigerant in its gaseous state at discharge of the compressor as it travels to
the condenser.
Chilled Liquid Temperature - Leaving
Displays the temperature of the liquid as it leaves the
evaporator.
Chilled Liquid Temperature - Return
Displays the temperature of the liquid as it enters the
evaporator.
Chilled Liquid Temperature - Setpoint
Displays the active temperature setpoint to which the
chiller is controlling the evaporator liquid. This value
could come from a 0-20mA or 4-20 mA, 0-10VDC or
2-10VDC input in Analog Remote mode, PWM signal
in Digital Remote mode, MicroGateway interface in
ISN mode, or a locally programmed value in local mode.
20
00552VIP
Evaporator Pressure
Displays the present refrigerant pressure in the
evaporator.
Evaporator Saturation Temperature
Displays the present saturation temperature in the
evaporator.
Condenser Liquid Temperature - Leaving
Displays the temperature of the liquid as it leaves the
condenser.
Condenser Liquid Temperature - Return
Displays the temperature of the liquid as it enters the
condenser.
Condenser Pressure
Displays the refrigerant pressure in the condenser.
Condenser Saturation Temperature
Displays the saturation temperature in the condenser.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
Differential Oil Pressure
Displays the pressure differential between the oil pressure transducer (input to the compressor) and the evaporator pressure transducer. The displayed value includes
offset pressure derived from auto-zeroing during the
START SEQUENCE INITIATED. If either of the transducers used to calculate this differential is out of range,
the display field will show XX.X.
% Full Load Amps
This displays the percentage of full load amps utilized
by the system.
Current Limit
Displays the current limit value in use. This value could
come from a 0-20mA or 4-20 mA, 0-10VDC or 210VDC input in Analog Remote mode, PWM signal in
YORK INTERNATIONAL
Digital Remote mode, MicroGateway interface in ISN
mode, or a locally programmed value.
Slide Valve Position
The value displayed represents the position of the slide
valve relative to fully closed at 0% and fully open at
100%.
2
PROGRAMMABLE
None
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
21
OptiView Control Center
FORM 160.81-O1 (402)
EVAPORATOR SCREEN
FIG. 6
OVERVIEW
This screen displays a cutaway view of the chiller evaporator. All setpoints relating to the evaporator side of the
chiller are maintained on this screen. Animation of the
evaporation process indicates whether the chiller is presently in a RUN condition. Animation of the liquid flow
indicates chilled liquid flow.
DISPLAY ONLY
Chilled Liquid Flow Switch (Open / Closed)
Displays whether the liquid flow is present in the
evaporator.
Chilled Liquid Pump
Displays the command presently sent by the control
center to the Chilled Liquid Pump (RUN or STOP).
Evaporator Pressure
Displays the present refrigerant pressure in the evaporator.
Evaporator Saturation Temperature
Displays the present saturation temperature in the
evaporator.
Return Chilled Liquid Temperature
Displays the temperature of the liquid as it enters the
evaporator.
22
00553VIP
Leaving Chilled Liquid Temperature
Displays the temperature of the liquid as it leaves the
evaporator.
Evaporator Refrigerant Temperature
Displays the temperature of the refrigerant in the evaporator, if the sensor is present and enabled.
Small Temperature Difference
Displays the difference between the Leaving Chilled Liquid temperature and the Evaporator Refrigerant temperature. The Evaporator Refrigerant temperature will be represented by the Refrigerant Temperature sensor input if
the sensor is present and enabled, otherwise it will be represented by the Evaporator Saturation temperature.
Leaving Chilled Liquid Temperature Setpoints –
Setpoint
Displays the present setpoint to which the chiller is operating, whether controlled locally or remotely. This
value could come from a 0-20mA or 4-20 mA, 0-10VDC
or 2-10VDC input in Analog Remote mode, PWM signal in Digital Remote mode, MicroGateway interface
in ISN mode, or a locally programmed value in local
mode. This setpoint is in effect for either WATER,
BRINE or BRINE/ICE storage operation. In water cooling or brine cooling mode the slide valve is modulated
to achieve this setpoint. In brine/ice storage mode, unload pulses are inhibited, allowing the chiller to make
ice at a faster rate as explained in the “Operation” secYORK INTERNATIONAL
FORM 160.81-O1 (402)
tion. The water cooling setpoint range is 38°F to 70°F.
The brine cooling setpoint range is 20°F to 70°F and
the default is 45°F. When in brine mode and Ice Storage mode is on, it is automatically activated and deactivated by the setpoint that is entered: 20°F to 32°F activates ice storage mode, > 32°F to 70°F deactivates
ice storage mode. This allows the chiller to be switched
in and out of ice storage mode (when in brine mode
and ice storage is on) by locally or remotely changing
this setpoint.
Leaving Chilled Liquid Temperature Setpoints –
Remote Range
Displays the present maximum range above the Leaving Chilled Liquid temperature setpoint that this setpoint
can be remotely changed to. This is the Local Leaving
Chilled Liquid Temperature - Range setpoint (See the
description in the following section of programmable
setpoints).
Leaving Chilled Liquid Temperature Setpoints –
Shutdown
Displays the Leaving Chilled Liquid Temperature at
which the chiller will shut down to avoid over-cooling the building. By default this value is 4°F below
the Leaving Chilled Setpoint. The displayed value is
the difference between the present Leaving Chilled
Liquid Temperature setpoint and the setpoint entered
for the Leaving Chilled Liquid Temperature Cycling
Offset – Shutdown.
Leaving Chilled Liquid Temperature Setpoints –
Shutdown Offset
Displays the offset below the Leaving Chilled Liquid
Temperature setpoint at which the chiller will shutdown
to avoid over-cooling. This is the Leaving Chilled Liquid Temperature Cycling – Shutdown setpoint (See the
description in the following section of programmable
setpoints).
Leaving Chilled Liquid Temperature Setpoints –
Restart
Displays the Leaving Chilled Liquid Temperature at
which the chiller will restart after it has shut down to
avoid over-cooling. By default, the chiller will restart
at the Leaving Chilled Liquid Temperature Setpoint.
The displayed value is the difference between the
present Leaving Chilled Liquid Temperature setpoint
and the setpoint entered for the Leaving Chilled Liquid
Temperature Cycling Offset - Restart. If Ice Storage is
On and the Leaving Chilled Liquid Temperature
Setpoint is < 32.0ºF, the Restart Temperature is the value
YORK INTERNATIONAL
programmed as the Ice Storage Restart Temperature.
Leaving Chilled Liquid Temperature Setpoints –
Restart Offset
Displays the offset above the Leaving Chilled Liquid
Temperature setpoint at which the chiller will restart
after it has shut down to avoid over-cooling. This is the
Leaving Chilled Liquid Temperature Cycling - Restart
setpoint (See the description in the following section
of programmable setpoints). If Ice Storage is On and
the Leaving Chilled Liquid Temperature Setpoint is <
32.0ºF, the Restart Offset is the value programmed as
the Ice Storage Restart Offset.
Ice Storage Active (LED)
Illuminates when Ice Storage mode is active. It is active when Ice Storage mode has been turned ON and
the Leaving Chilled Liquid Temperature Setpoint is set
to <32.0°F. Extinguished when Ice Storage mode is
turned ON but not Active. It is not active when the Leaving Chilled Liquid Temperature Setpoint is >32.0°F. If
Ice Storage mode is turned OFF, this indicator is not
displayed.
PROGRAMMABLE
Local Leaving Chilled Liquid Temperature – Range
Access Level Required: OPERATOR
This is the range over which an analog (0-20mA, 420mA, 0-10VDC or 2-10VDC) in Analog Remote mode
or a digital signal (PWM) in Digital Remote mode can
reset the Leaving Chilled Liquid Temperature setpoint
above the operator programmed Base Setpoint (see
below). Programmable as either 10, 20, 30, or 40°F,
with a default of 10°F, it is added to the Base value to
create a range over which the remote device can reset
the setpoint. For example, if this setpoint is programmed
for 10°F and the operator programmed value is 45°F,
then the remote device can set the Leaving Chilled Liquid Temperature setpoint over the range 45.0° - 55.0°F.
Local Leaving Chilled Liquid Temperature –
Setpoint
Access Level Required: OPERATOR
This value allows the user to define the Leaving Chilled
Liquid Temperature that is to be maintained by the
chiller. It is programmable over the range of 38.0°F to
70.0°F (water) or 20.0°F to 70.0°F (brine). (Microboard
Program Jumper J35 must be removed for Brine cooling applications). If Smart Freeze (see below) is enabled, the range is 36.0°F to 70.0°F (water). If Ice Storage is ON and wanted, the range is 20°F to 32°F (brine).
A remote device can provide an analog signal (0-20mA,
4-20mA, 0-10VDC or 2-10VDC) in Analog Remote
23
2
OptiView Control Center
mode, or PWM signal in Digital Remote mode that
changes the setpoint by creating an offset above this
base or lowest setting allowed for the Leaving Chilled
Liquid Temperature setpoint. This offset may be defined up to 10, 20, 30, or 40°F above this base setpoint
(see the Remote Leaving Chilled Liquid Temperature
Setpoint Range description above). Additionally, a
MicroGateway (in ISN Remote mode) can define the
setpoint through a serial data stream. In this case, the
incoming setpoint is not an offset that is applied to this
locally programmed Base setpoint value, but rather is
the setpoint value itself.
Leaving Chilled Liquid Temperature Cycling
Offset - Shutdown
Access Level Required: OPERATOR
This value allows the user to specify the Leaving Chilled
Liquid Temperature at which the chiller will shut down
on a LEAVING CHILLED LIQUID – LOW TEMPERATURE cycling shutdown. This is done by defining an offset below the Leaving Chilled Liquid Temperature setpoint. It is programmable over a range of
1°F to 64°F below the setpoint, to a minimum cutout of
36°F (water), 34°F (water with Smart Freeze enabled)
or 16°F (brine). It establishes the minimum allowable
temperature for the Leaving Chilled Liquid Temperature and prevents over-cooling of the building. Anytime the Leaving Chilled Liquid Temperature setpoint
is increased, the shutdown threshold is 36.0°F (water)
or 16.0°F (brine) for the next ten (10) minutes. If Smart
Freeze (see below) is enabled, the threshold is 34.0°F
for the next 10 minutes. After ten (10) minutes have
elapsed, the shutdown threshold becomes the programmed setpoint value.
Leaving Chilled Liquid Temperature Cycling
Offset – Restart
Access Level Required: OPERATOR
This value allows the user to specify the Leaving Chilled
Liquid Temperature at which the chiller will restart after a shutdown on a LEAVING CHILLED LIQUID –
LOW TEMPERATURE cycling shutdown. This is
done by defining an offset above the Leaving Chilled
Liquid Temperature setpoint. It is programmable over
a range of 0°F to 60°F above the setpoint, to a maximum restart value of 80°F. If Ice Storage mode is ON,
there are two different RESTART Setpoints employed:
One is programmed and will be in effect when the Leaving Chilled Liquid Temperature Setpoint is < 32.0º F.
The other is programmed and will be in effect when the
Setpoint is > 32.0ºF. Each can be programmed to a dif-
24
FORM 160.81-O1 (402)
ferent value.
The chiller will automatically restart when this temperature is reached. This setpoint can be used to reduce
chiller cycling by delaying the chiller restart until the
cooling load has increased.
Brine Low Evaporator Cutout
Access Level Required: SERVICE
This value is only available in Brine mode. It allows
the user to specify the Evaporator Pressure at which a
safety shutdown is initiated. Service Technicians refer
to YORK Service Manual 160.81-M1.
Ice Storage (On / Off)
Access Level Required: SERVICE
When in Brine Mode this must be turned on or off via
this toggle and then the Leaving Chilled Liquid Temperature setpoint is used to automatically activate or
deactivate Ice Storage Mode. Service Technicians refer
to YORK Service Manual 160.81-M1.
Smart Freeze (Off / On)
Access Level Required: SERVICE
This value is only available if the chiller is not in Brine
mode. It allows the user to enable the Smart Freeze Point
Operation which allows the chiller to run closer to the
freeze point without shutting down. Service Technicians
refer to YORK Service Manual 160.81-M1.
Refrigerant (Enabled / Disabled)
Access Level Required: SERVICE
When an Evaporator Refrigerant Sensor has been installed
it must be enabled via this toggle before the system will
utilize the new, enhanced resolution input. Service Technicians refer to YORK Service Manual 160.81-M1.
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Sensitivity
Access Level Required: SERVICE
Moves to the Sensitivity sub-screen allowing programming of the Leaving Chilled Liquid Temperature Sensitivity setpoints. Service technicians refer to YORK
Service Manual 160.81-M1.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
SENSITIVITY SETPOINTS SCREEN
2
00650VIP
FIG. 7
OVERVIEW
This screen, accessed from the EVAPORATOR Screen,
displays a cutaway view of the evaporator. The Leaving Chilled Liquid Temperature control SENSITIVITY
setpoints are programmed on this screen.
Requires a login access level of SERVICE. Service Technicians refer to
YORK Service Manual 160.81-M1 for
operation instructions and explanation
instructions of all setpoints and displayed values.
DISPLAY ONLY
None
PROGRAMMABLE
Period
Service technicians refer to Special Setpoints section
of YORK Service Manual 160.81-M1.
YORK INTERNATIONAL
Error
Service technicians refer to Special Setpoints section
of YORK Service Manual 160.81-M1.
Rate
Service technicians refer to Special Setpoints section
of YORK Service Manual 160.81-M1.
Max Load Pulse
Service technicians refer to Special Setpoints section
of YORK Service Manual 160.81-M1
Max Unload Pulse
Service technicians refer to Special Setpoints section
of YORK Service Manual 160.81-M1
NAVIGATION
Home
Access Level Required: VIEW
Evaporator
Access Level Required: VIEW
25
OptiView Control Center
FORM 160.81-O1 (402)
CONDENSER SCREEN
FIG. 8
OVERVIEW
This screen displays a cutaway view of the chiller condenser. All setpoints relating to the condenser side of
the chiller are maintained on this screen. Animation
indicates condenser liquid flow. This screen also serves
as a gateway to controlling the Refrigerant Level.
DISPLAY ONLY
Leaving Condenser Liquid Temperature
Displays the water temperature as it leaves the condenser.
Return Condenser Liquid Temperature
Displays the water temperature as it enters the condenser.
Condenser Pressure
Displays the refrigerant pressure in the condenser.
Condenser Saturation Temperature
Displays the saturation temperature in the condenser.
Small Temperature Difference
Displays the difference between the Condenser Refrigerant temperature and the Leaving Condenser Liquid temperature. The Condenser Refrigerant temperature will be
represented by the Condenser Saturation temperature.
26
00419VIP
High Pressure Switch (Open / Closed)
Displays the present position of the high pressure
switch. This will indicate whether a High Pressure fault
is present.
Condenser Liquid Flow Switch
Indicates whether flow is present in the condenser.
Condenser Liquid Pump (Run / Stop)
Indicates whether Condenser liquid pump is operating.
Drop Leg Refrigerant Temperature
Displays the temperature of the refrigerant in the Drop
Leg between the condenser and evaporator shells. Not
displayed if function disabled.
Sub-Cooling Temperature
Displays the difference between the Condenser Refrigerant temperature and the Drop-Leg Refrigerant temperature. The Condenser Refrigerant Temperature is
represented by the Condenser Saturation Temperature.
If the Drop Leg sensor is disabled, this temperature is
not displayed.
Refrigerant Level Position
Displays the present position of the refrigerant level.
Not displayed if function disabled on OPERATIONS
Screen.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
Refrigerant Level Setpoint
Displays the setpoint to which the refrigerant level is
being controlled. Not displayed if function disabled on
OPERATIONS Screen.
Ramp-Up Time Remaining
Displays the time remaining in the period in which the
Refrigerant Level Setpoint is being ramped to a Refrigerant Level target Setpoint. Not displayed if Refrigerant Level function disabled on OPERATIONS Screen
or ramp not in effect. Service Technicians refer to
YORK Service manual 160.81-M1.
time (30 to 60 minutes). Standby chiller Freeze warnings are bypassed until the standby chiller has been shutdown for at least this amount of time. Service technicians refer to YORK Service Manual 160.81-M1
Drop Leg (Enabled/Disabled)
Access Level Required: SERVICE
If the Drop Leg temperature sensor is present on the
chiller, the display of this temperature should be enabled. If the chiller is not equipped with the sensor, it
should be disabled. Service technicians refer to YORK
Service Manual 160.81-M1.
PROGRAMMABLE
NAVIGATION
High Pressure Warning Threshold
Access Level Required: SERVICE
This value allows the user to define the condenser pressure at which the chiller will initiate a warning.
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Freeze Warning (Enabled / Disabled)
Access Level Required: SERVICE
Enables and disables the standby chiller freeze protection feature. Service Technicians refer to York Service
Manual 160.81-M1.
Refrigerant Level Control
Access Level Required: SERVICE
Moves to the Refrigerant Level sub-screen allowing programming of the refrigerant liquid level control
setpoints.
Freeze Time
Access Level Required: SERVICE
Only displayed if Freeze Warning feature is Enabled.
Allows the user to define the Freeze Warning bypass
YORK INTERNATIONAL
27
2
OptiView Control Center
FORM 160.81-O1 (402)
REFRIGERANT LEVEL CONTROL SCREEN
00651VIP
FIG. 9
OVERVIEW
This screen displays a cutaway view of the chiller condenser, along with the liquid refrigerant level sensor
and the flow control valve. All setpoints relating to the
liquid level control are maintained on this screen.
Through animation, the variable orifice position is displayed. In addition, the refrigerant flow control valve
(variable orifice) can be manually operated.
Requires a login access level of SERVICE. Service Technicians refer to
YORK Service Manual 160.81-M1 for
operation instructions and explanation of all programmable setpoints
and displayed values.
DISPLAY ONLY
Refrigerant Level Position
Displays the present position of the liquid level.
Refrigerant Level Control Mode
Indicates whether the liquid level control is under
manual or automatic control.
Raise (LED)
Is ON when the digital output controlling the Level
Raise contact is on.
28
Lower (LED)
Is ON when the digital output controlling the Level
Lower contact is on.
PROGRAMMABLE
[Refrigerant Level] Setpoint
Service Technicians refer to YORK Service Manual
160.81-M1.
[Refrigerant Level Control] Period
Service Technicians refer to YORK Service Manual
160.81-M1.
Valve Preset Time
Service Technicians refer to YORK Service Manual
160.81-M1.
[Refrigerant Level Control] Proportional
Limit Open
Service Technicians refer to YORK Service Manual
160.81-M1.
[Refrigerant Level Control] Proportional
Limit Close
Service Technicians refer to YORK Service Manual
160.81-M1.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
[Refrigerant Level Control] Rate Limit Open
Service Technicians refer to YORK Service Manual
160.81-M1.
[Refrigerant Level Control] Hold (Manual)
This key puts the level control into manual mode and
sends a HOLD command to the variable orifice.
[Refrigerant Level Control] Rate Limit Close
Service Technicians refer to YORK Service Manual
160.81-M1.
[Refrigerant Level Control] Auto
Returns the Level Control to automatic mode.
[Refrigerant Level Control] Raise (Manual)
This key puts the level control into manual mode and
sends a RAISE command to the variable orifice.
NAVIGATION
2
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
[Refrigerant Level Control] Lower (Manual)
This key puts the level control into manual mode and
sends a LOWER command to the variable orifice.
YORK INTERNATIONAL
29
OptiView Control Center
FORM 160.81-O1 (402)
COMPRESSOR SCREEN
FIG. 10
OVERVIEW
This screen displays a cutaway view of the chiller compressor, revealing the rotary screw, and shows all conditions associated with the compressor. The slide valve
positioning is animated and with the proper Access
Level it can be manually controlled. Animation of the
compressor rotors indicates whether the chiller is presently in a RUN condition. This screen also serves as a
gateway to sub-screens for calibrating the slide valve
or configuring the optional Hot Gas Bypass.
DISPLAY ONLY
00556VIP
ducer auto-zeroing. During this time the transducers
will be sensing the same pressure and their outputs
should be equal. However, due to accuracy tolerances
in transducer design, differences can exist. Therefore,
to compensate for differences between transducers and
assure differential pressure sensing accuracy, the Offset Pressure is subtracted from or added to the differential pressure. (Certain operating conditions could
require the auto-zeroing to be disabled. This must
never be done by anyone other than a qualified service technician). The offset pressure calculation will
not be performed if either transducer is out of range.
The offset value will be taken as 0 PSI in this instance.
Differential Oil Pressure
Displays the pressure differential between the oil pressure transducer (input to the compressor) and the evaporator pressure transducer. The displayed value includes
the offset pressure derived from auto-zeroing during
the START SEQUENCE INITIATED. If either of the
transducers used to calculate this differential is out of
range, the display field will show XX.X.
Discharge Pressure
Displays the pressure at the discharge of the compressor.
Differential Oil Pressure = (Oil Pressure - Evaporator
Pressure) + Offset Pressure
Discharge Superheat
Displays the temperature differential between the Discharge Temperature and the Condenser Saturation
Temperature.
The Offset Pressure is used to calculate the differential
pressure. The Offset Pressure is the pressure differential between the oil pressure transducer and the evaporator pressure transducer during the first 15 seconds
of START SEQUENCE INITIATED. This is the trans30
Discharge / Oil Temperature
Displays the temperature of the refrigerant in its gaseous state at discharge of the compressor as it travels to
the oil separator.
Slide Valve Position
The value displayed represents the position of the slide
valve relative to fully closed at 0% and fully open at 100%.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
Oil Supply Solenoid (LED)
Indicates whether the solenoid is presently energized.
Full Load Amps (Electro-Mechanical Starter only)
Access Level Required: SERVICE
Displays the motor current as a percentage of the Full
Load Amps (FLA) value.
Phase A, B, C Current (Solid State Starter only)
Access Level Required: SERVICE
Displays the 3-phase motor current values being read
from the Solid State Starter.
Liquid Injector (LED)
Illuminates when the Liquid Injection Solenoid valve
is open, injecting liquid refrigerant into the compressor.
PROGRAMMABLE
[Slide Valve] Load (Manual)
Access Level Required: SERVICE
This key puts the slide valve control into manual mode
and loads the slide valve. The slide valve will continue
to load until the Unload, Hold, or Auto key is pressed.
[Slide Valve] Hold (Manual)
Access Level Required: SERVICE
This key puts the slide valve control into manual mode
and holds the slide valve in its present position. The
slide valve will remain at this position until the Load,
Unload, or Auto key is pressed.
[Slide Valve] Unload (Manual)
This
key puts the slide valve control into manual mode and
unloads the slide valve. The slide valve will continue
to unload until the Load, Hold, or Auto key is pressed.
[Slide Valve] Auto
Access Level Required: SERVICE
This key puts the slide valve control into automatic
mode.
Maximum Load Temperature
Access Level Required: SERVICE
Allows a Service Technician to specify a special Load
Limit for use in certain applications. Service Technicians refer to YORK Service Manual 160.81-M1.
Maximum Load FLA
Access Level Required: SERVICE
This setpoint is used in conjunction with the above
“Maximum Load Temperature” setpoint. Service Technicians refer to YORK Service Manual 160.81-M1.
Access Level Required: SERVICE
The Minimum Load Control feature prevents the Slide
Valve from unloading to a position that will not allow
sufficient oil transfer to the Oil Separator while the
chiller is running. If the Slide valve is permitted to unload too far, there will not be enough oil transfer to the
Oil Separator and a “Oil Separator. There are two selectable control sources that can be used to set the minimum allowed Slide Valve position:
a. Slide Valve – This method limits the minimum Slide
Valve position to 15% (based on the position feedback potentiometer) after the chiller has been running for 3 minutes. When the Slide Valve unloads to
15%, no more unload pulses will be applied. If it decreases to < 15%, a 1 second load pulse is applied
every 3 seconds until the Slide Valve position is >
15%.
b. Motor FLA – This method limits the Slide Valve
minimum position to one that will maintain the compressor motor current above the programmed Minimum Load FLA (15% to 70% FLA) Setpoint after
the chiller has been running for 3 minutes. When
the Slide Valve unloads to the point where the motor current decreases to the Minimum Load FLA
Setpoint, no more unload pulses will be applied. If
it unloads to the point where the motor current is <
Minimum Load FLA Setpoint, a 1 second load pulse
is applied every 3 seconds until the motor current is
> the Minimum Load FLA Setpoint.
Service Technicians refer to YORK Service Manual
160.81-M1.
Minimum Load FLA
Access Level Required: SERVICE
Only displayed if Motor FLA is selected as the Minimum Load Control Source. Allows the user to set the
motor current value to that which will maintain the Slide
Valve position above the minimum allowed position.
Service Technicians refer to YORK Service manual
160.81-M1.
Liquid Injection
Access Level Required: SERVICE
Allows the Service Technician to specify the Oil/Discharge Temperature at which the Liquid Injection Solenoid Valve opens to inject liquid refrigerant into the
compressor. Service Technicians refer to YORK Service manual 160.81-M1.
Minimum Load Control Source
YORK INTERNATIONAL
31
2
OptiView Control Center
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Hot Gas
Access Level Required: SERVICE
Only available if the system uses Hot Gas Bypass.
Moves to the sub-screen allowing for the setup of Hot
32
FORM 160.81-O1 (402)
Gas. Service Technicians refer to YORK Service
Manual 160.81-M1.
Slide Valve Calibration
Access Level Required: SERVICE
Only available if the chiller is stopped. Moves to the subscreen allowing calibration of the Slide Valve. Service
Technicians refer to YORK Service Manual 160.81-M1.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
2
THIS PAGE INTENTIONALLY LEFT BLANK
TO MAINTAIN FORMAT
YORK INTERNATIONAL
33
OptiView Control Center
FORM 160.81-O1 (402)
HOT GAS BYPASS SCREEN
00652VIP
FIG. 11
The HOT GAS BYPASS Screen, accessed from the
COMPRESSOR Screen, displays a pictorial of the bypass line and solenoid valve location on the chiller. The
Hot Gas ON and OFF Setpoints are programmed on
this screen and system parameters pertinent to Hot Gas
Bypass operation are displayed. An LED illuminates
when the Hot Gas Solenoid is ON. If the chiller is
equipped with the Hot Gas Bypass option, operation
must be enabled on the OPERATIONS Screen.
Requires a login access level of SERVICE. Service Technicians refer to
YORK Service Manual 160.81-M1 for
operation instructions and explanation
of all programmable setpoints and displayed values.
DISPLAY ONLY
Slide Valve Position
The value displayed represents the position of the slide
valve relative to fully closed at 0% and fully open at
100%.
Return Chilled Liquid Temperature
Displays the temperature of the liquid as it enters the
evaporator.
34
Leaving Chilled Liquid Temperature
Displays the temperature of the liquid as it leaves the
evaporator.
Hot Gas Solenoid (LED)
Indicates whether the solenoid is presently energized.
PROGRAMMABLE
On Setpoint
The Hot Gas Bypass solenoid valve is turned on when
the Return Chilled Liquid Temperature decreases to <
the number of degrees of this On Setpoint above the
Leaving Chilled Liquid Temperature Setpoint. The ON
Setpoint is programmed over the range of 1.0 to 10.0ºF
(default 1.0). Service Technicians refer to YORK Service Manual 160.81-M1 for an explanation of this
setpoint.
Off Setpoint
Once the Hot Gas Bypass solenoid valve is turned on, it
is turned off when the Return Chilled Liquid Temperature increases above the Leaving Chilled Liquid Temperature Setpoint by greater than or equal to the number
of degrees of this Off Setpoint. The OFF setpoint is programmed over the range of 2.0 to 15.0º F (default 2.0).
Service Technicians refer to YORK Service Manual
160.81-M1 for an explanation of this setpoint.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Compressor
Access Level Required: VIEW
Return to the Compressor Screen.
YORK INTERNATIONAL
2
35
OptiView Control Center
FORM 160.81-O1 (402)
SLIDE VALVE CALIBRATION SCREEN
00557VIP
FIG. 12
OVERVIEW
This screen displays a cutaway view of the chiller compressor, revealing the rotary screw and slide valve and
provides the capability of calibrating the slide valve.
Requires a login access level of SERVICE. Service Technicians refer to
YORK Service Manual 160.81-M1 for
operation instructions and explanation
of all programmable setpoints and displayed values.
DISPLAY ONLY
Calibration Messages
These are text messages which step the user through the
calibration process and indicate its success or failure.
PROGRAMMABLE
Start Calibration
This option is hidden after calibration has started. Service Technicians refer to YORK Service Manual
160.81-M1 for an explanation of this setpoint.
Cancel Calibration
This option only becomes available after calibration has
started. Service Technicians refer to YORK Service
Manual 160.81-M1 for an explanation of this setpoint.
Slide Valve Loading (LED)
Indicates the slide valve is loading.
NAVIGATION
Slide Valve Unloading (LED)
Indicates the slide valve is unloading.
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Slide Valve Voltage
Displays the voltage derived from the 4-20mA signal
from the Slide Valve Position Sensor.
36
Compressor
Access Level Required: VIEW
Return to the Compressor Screen.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
2
THIS PAGE INTENTIONALLY LEFT BLANK
TO MAINTAIN FORMAT
YORK INTERNATIONAL
37
OptiView Control Center
FORM 160.81-O1 (402)
OIL SEPARATOR SCREEN
FIG. 13
OVERVIEW
This screen displays a close-up of the chiller oil sump
and provides all the necessary setpoints for maintaining the oil.
DISPLAY ONLY
Discharge/Oil Temperature
Displays the temperature of the refrigerant in its gaseous state at discharge of the compressor as it travels
to the oil separator.
Discharge Superheat
Displays the temperature differential between the Discharge Temperature and the Condenser Saturation Temperature.
Oil Pressure
Displays the pressure of the oil at the input to the
compressor.
Discharge Pressure
Displays the pressure at the discharge of the compressor.
Differential Oil Pressure
Displays the pressure differential between the oil pressure (as sensed at the input to the compressor) and the
evaporator pressure. If either of the transducers used
to calculate this differential is out of range, the display
38
00558VIP
field will show XX.X. The displayed value includes
the offset pressure that is derived during the first 15
seconds of “Start Sequence Initiated” (Refer to the following explanation of offset pressure).
Differential Oil Pressure =
(Oil Pressure – Evaporator Pressure)
+ Offset Pressure
Differential Filter Pressure
Displays the pressure differential between the input to
the oil filter (Discharge Pressure) and the input to the
compressor. This value is used to check for filter clogging. If either of the transducers used to calculate this
differential is out of range, the display field will show
XX.X. The displayed value includes the offset pressure that is derived during the first 15 seconds of “Start
Sequence Initiated”. (Refer to the following explanation of offset pressure).
Differential Filter Pressure =
(Discharge Pressure – Oil Pressure) + Offset Pressure
Offset Pressure (Not Displayed)
The Offset Pressure is a calculated value that is used to
calculate the differential pressure. The Offset Pressure
is the pressure differential between the corresponding
transducers during the first 15 seconds of START SEQUENCE INITIATED. This is the transducer auto-zeroing. During this time the transducers will be sensing
YORK INTERNATIONAL
FORM 160.81-O1 (402)
the same pressure and their outputs should be equal.
However, due to accuracy tolerances in transducer design, differences can exist. Therefore, to compensate
for differences between transducers and assure differential pressure sensing accuracy, the Offset Pressure is
subtracted from the differential pressure. (Certain operating conditions could require the auto-zeroing to be
disabled. This must never be done by anyone other than
a qualified service technician.
Oil Supply Solenoid (LED)
Indicates whether the solenoid is energized.
Condenser Saturation
Displays the saturation temperature in the condenser.
Evaporator Pressure
Displays the refrigerant pressure in the evaporator.
YORK INTERNATIONAL
Condenser Pressure
Displays the refrigerant pressure in the condenser.
PROGRAMMABLE
Auto Zero (Enabled / Disabled)
Access Level Required: SERVICE
Allows the user to enable or disable the transducer
auto-zeroing that is used to calculate the offset pressure. (Refer to the description of the Offset Pressure).
Service Technicians refer to YORK Service Manual
160.81-M1.
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
39
2
OptiView Control Center
FORM 160.81-O1 (402)
ELECTRO-MECHANICAL STARTER SCREEN
00653VIP
FIG. 14
OVERVIEW
This screen displays all information pertaining to an
Electro-Mechanical Starter.
DISPLAY ONLY
Motor Run (LED)
Indicates whether the digital output from the controls
is commanding the motor to RUN.
Motor Current % Full Load Amps
Displays the motor current as a percentage of the Full
Load Amps (FLA) value. For the Electro-Mechanical
Starter this is the data returned by the CM-2 board.
Current Limit Setpoint
Displays the current limit value in use. This value could
come from a 0-20mA, 4-20mA, 0-10VDC or 2-10VDC
input in Analog Remote mode, PWM signal in Digital
Remote mode, MicroGateway interface in ISN mode,
or a locally programmed value.
Pulldown Demand Time Left
Displays the time remaining in the programmed
pulldown period if the value is nonzero.
Motor Temperature Switch (Open/Closed)
Displays the present position of the Motor Tempera40
ture Switch. The normal position is Closed. It is open
when there is a high temperature condition.
PROGRAMMABLE
Local Motor Current Limit
Access Level Required: OPERATOR
Allows the user to specify the maximum allowed motor current (as a percentage of FLA). When the motor
current reaches this value, the slide valve will not be
permitted to load further. If the motor current rises above
this value, the slide valve will unload to reduce the current to this value.
Pulldown Demand Limit
Access Level Required: OPERATOR
Allows the user to specify the current limit value (as a
percentage of FLA) to which the chiller will be limited
during the specified pulldown limit time. This value
will override the Motor Current Limit value during this
time period. This function is used to provide energy
savings following chiller start-up.
Pulldown Demand Time
Access Level Required: OPERATOR
Allows the user to set a period of time for which the
pulldown demand limit will be in effect after the chiller
starts.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
2
YORK INTERNATIONAL
41
OptiView Control Center
FORM 160.81-O1 (402)
MOD “B” SOLID STATE STARTER SCREEN
FIG. 15
OVERVIEW
This screen displays information pertaining to the Mod
“B” Solid State Starter.
00654VIP
kW Hours
Displays the cumulative amount of kilowatts used over
time.
DISPLAY ONLY
Starter Model
Displays the Solid State Starter model that is applied to
the chiller. Starter Models are 7L, 14L, 26L, or 33L.
Motor Run (LED)
Indicates whether the digital output from the controls
is commanding the motor to RUN.
Voltage - Phase A, B, C
Display the 3-phase input line voltage measured by the
Solid State Starter.
Motor Current % Full Load Amps
Displays the motor current as a percentage of the Full
Load Amps (FLA) value.
Current Limit Setpoint
Displays the current limit value in use. This value could
come from a 0-20mA, 4-20 mA, 0-10VDC or 2-10VDC
input in Analog Remote mode, PWM signal in Digital
Remote mode, MicroGateway interface in ISN remote
mode, or a locally programmed value in local mode.
Pulldown Demand Time Left
Displays the time remaining in the programmed
pulldown period.
Input Power
Displays the Kilowatts measured by the Solid State
Starter.
42
Current - Phase A, B, C
Display the 3-phase motor current values measured by
the Solid State Starter.
Temperature - Phase A, B, C
Displays the temperatures of the Silicon Controlled Rectifier assemblies.
Motor Temperature Switch (Open/Closed)
Displays the present position of the Motor Temperature Switch. The normal position is Closed. It is open
when there is a high temperature condition.
PROGRAMMABLE
Local Motor Current Limit
Access Level Required: OPERATOR
Allows the user to specify the maximum allowed motor current (as a percentage of FLA). When the motor
YORK INTERNATIONAL
FORM 160.81-O1 (402)
current reaches this value, the slide valve will not be
permitted to load further. If the motor current rises above
this value, the slide valve will unload to reduce the current to this value.
Pulldown Demand Limit
Access Level Required: OPERATOR
Allows the user to specify the current limit value (as a
percentage of FLA) to which the chiller will be limited
during the specified pulldown limit time. This value
will override the Motor Current Limit value during this
time period. This function is used to provide energy
savings following chiller start-up.
Pulldown Demand Time
Access Level Required: OPERATOR
Allows the user to set a period of time for which the
pulldown demand limit will be in effect after the chiller
starts.
Full Load Amps
Access Level Required: SERVICE
Defines the maximum amps at which the motor can operate. This value is viewable when logged in under the
Operator or View access level. Service Technicians refer to YORK Service Manual 160.81-M1.
Voltage Range
Access Level Required: SERVICE
Allows the user to select specific line voltage range for
voltage checking. When not disabled, this line voltage
range is used to determine a low line and high line voltage threshold for initiating a shutdown. Service Technicians refer to YORK Service Manual 160.81-M1.
YORK INTERNATIONAL
Starting Current
Access Level Required: SERVICE
Defines the maximum allowed motor starting amps. The
Solid State Starter will limit the motor starting current
to this value. Service Technicians refer to YORK Service Manual 160.81-M1.
Open SCR (Enabled/Disabled)
Access Level Required: SERVICE
Allows the user to enable or disable the Solid State
Starter Open SCR safety detection. This must never be
disabled unless under advisement of the YORK Factory. Service Technicians refer to YORK Service
Manual 160.81-M1.
Shorted SCR (Enabled/Disabled)
Access Level Required: SERVICE
Allows the user to enable or disable the Solid State
Starter Shorted SCR safety detection. This must never
be disabled unless under advisement of the YORK Factory. Service Technicians refer to YORK Service
Manual 160.81-O1.
KWH Reset
Access Level Required: SERVICE
Allows the user to reset the cumulative Kilowatt Hours.
Service Technicians refer to YORK Service Manual
160.81-M1.
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
43
2
OptiView Control Center
FORM 160.81-O1 (402)
SETPOINTS SCREEN
00230VIP
FIG. 16
OVERVIEW
This screen provides a convenient location for programming the most common setpoints involved in the chiller
control. This screen also serves as a gateway to a
sub-screen for defining the setup of general system
parameters.
DISPLAY ONLY
Leaving Chilled Liquid Temperature - Setpoint
Displays the present setpoint to which the chiller is operating whether controlled remotely or locally. This
value could come from a 0-20mA, 4-20 mA, 0-10VDC
or 2-10VDC input in Analog Remote mode, PWM signal in Digital Remote mode, MicroGateway interface
in ISN remote mode, or a locally programmed value in
local mode.
Leaving Chilled Liquid Temperature Cycling Shutdown
Displays the Leaving Chilled Liquid Temperature at
which the chiller will shut down to avoid over-cooling
the building. This value is calculated by subtracting the
Leaving Chilled Liquid Temperature Cycling Offset –
Shutdown from the Leaving Chilled Liquid Temperature – Setpoint. If this value is below the absolute minimum allowed shutdown temperature the minimum value
is displayed.
44
Leaving Chilled Liquid Temperature Cycling Restart
Displays the Leaving Chilled Liquid Temperature at
which the chiller will restart after it has shut down due
to over-cooling temperature. This value is calculated
by adding the Leaving Chilled Liquid Temperature
Cycling Offset – Restart to the Leaving Chilled Liquid
Temperature – Setpoint.
Current Limit Setpoint
Displays the present setpoint to which the chiller is operating whether controlled remotely or locally. This
value could come from a 0-20mA, 4-20mA, 0-10VDC
or 2-10VDC input in Analog Remote mode, PWM signal in Digital Remote mode, MicroGateway interface
in ISN remote mode, or a locally programmed value in
Local mode.
PROGRAMMABLE
Leaving Chilled Liquid Temperature - Remote
Range
Access Level Required: OPERATOR
This is the range over which an analog signal (0-20mA,
4-20mA, 0-10VDC or 2-10VDC) in Analog Remote
Mode or a digital signal (PWM) in Digital Remote mode
can reset the Leaving Chilled Liquid Temperature
setpoint above the operator programmed Base Setpoint
(see below). Programmable as either 10, 20, 30 or 40°F,
with a default of 10°F, it is added to the BASE value to
create a range over which the remote device can reset
the setpoint. For example, if this setpoint is programmed
YORK INTERNATIONAL
FORM 160.81-O1 (402)
for 10°F and the operator programmed value is 45°F,
then the remote device can set the Leaving Chilled Liquid Temperature setpoint over the range 45.0° - 55.0°F.
Local Leaving Chilled Liquid Temperature Setpoint
Access Level Required: OPERATOR
This value allows the user to define the Leaving Chilled
Liquid Temperature that is to be maintained by the
chiller. It is programmable over the range of 38.0°F to
70.0°F (water) or 20.0°F to 70.0°F (brine). If Smart
Freeze is enabled, the range is 36.0°F to 70.0°F (water). A remote device can provide an analog signal (020mA, 4-20mA, 0-10VDC, or 2-10VDC) in Analog
Remote mode, or PWM signal in Digital Remote mode
that changes the setpoint by creating an offset above
the operator programmed BASE Leaving Chilled Liquid Temperature setpoint. This offset may be defined
up to 10.0°F, 20.0°F, 30.0°F, or 40.0°F above the BASE
setpoint (see the Remote Leaving Chilled Liquid Temperature Setpoint Range description above). Additionally, a remote MicroGateway device (in ISN Remote
mode) can define the setpoint through a serial data
stream. In this case, the incoming setpoint is not an offset that is applied to the locally programmed BASE
setpoint value, but rather is the setpoint value itself.
Leaving Chilled Liquid Temperature
Cycling Offset - Shutdown
Access Level Required: OPERATOR
This value allows the user to specify the Leaving Chilled
Liquid Temperature at which the chiller will shut down
on a LEAVING CHILLED LIQUID – LOW TEMPERATURE cycling shutdown. This is done by defining an offset below the Leaving Chilled Liquid Temperature setpoint. It is programmable over a range of 1°F to
64°F below the setpoint, to a minimum cutout of 36°F
(water), 34°F (water with Smart Freeze enabled) or 16°F
(brine). It establishes the minimum allowed temperature
for the Leaving Chilled Liquid Temperature and prevents
over-cooling of the building. Anytime the Leaving Chilled
Liquid Temperature setpoint is increased, the shutdown
threshold is 36.0°F (water) or 16.0°F (brine) for the next
ten (10) minutes. If Smart Freeze is enabled, the threshold is 34.0°F for the next 10 minutes. After ten (10) minutes have elapsed, the shutdown threshold becomes the
programmed setpoint value.
Leaving Chilled Liquid Temperature
Cycling Offset - Restart
Access Level Required: OPERATOR
This value allows the user to specify the Leaving Chilled
Liquid Temperature at which the chiller will restart after a shutdown on a LEAVING CHILLED LIQUID –
LOW TEMPERATURE cycling shutdown. This is
YORK INTERNATIONAL
done by defining an offset above the Leaving Chilled
Liquid Temperature setpoint. It is programmable over
a range of 0°F to 70°F above the setpoint, to a maximum restart value of 80°F. The chiller will automatically restart when this temperature is reached. This setpoint can be used to reduce chiller cycling by delaying
the chiller restart until the cooling load has increased.
Remote Analog Input Range
Access Level Required: OPERATOR
This setpoint defines, for the Control Center, the remote
signal range applied for remote reset of the Leaving
Chilled Liquid Temperature Setpoint and Current Limit
Setpoint in ANALOG remote mode. If the remote signal
is 0-10VDC or 0-20mA, this setpoint must be programmed for 0-10VDC. If the remote signal is 2-10VDC
or 4-20mA, this setpoint must be programmed for 210VDC.
Local Motor Current Limit
Access Level Required: OPERATOR
Allows the user to specify the maximum allowed motor current (as a percentage of FLA). When the motor
current reaches this value, the slide valve will not be
permitted to load further. If the motor current rises above
this value, the slide valve will unload to reduce the current to this value.
Pulldown Demand Limit
Access Level Required: OPERATOR
Allows the user to specify the current limit value (as a
percentage of Full Load Amps) to which the chiller will
be limited during the specified pulldown limit time. This
value will override the Motor Current Limit value during this time period. This function is used to provide
energy savings following chiller startup.
Pulldown Demand Time
Access Level Required: OPERATOR
Allows the user to set a period of time for which the
pulldown demand limit will be in effect after the chiller
starts.
Print
Access Level Required: VIEW
Generates Setpoints print report.
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Setup
Access Level Required: VIEW
Moves to the sub-screen allowing setup of general
system parameters.
45
2
OptiView Control Center
FORM 160.81-O1 (402)
SETUP SCREEN
FIG. 17
00426VIP
OVERVIEW
PROGRAMMABLE
This screen is the top level of the general configuration
parameters. It allows programming of the time and date,
along with specifications as to how the time will be
displayed (12 or 24 hour format). In addition, the chiller
configuration, as determined by the state of the
Microboard Program Jumpers and Program Switches
is displayed. A qualified Service Technician, following
instructions in YORK Service Manual 160.81-M1, establishes this configuration per the desired operation.
This screen also serves as a gateway to more sub-screens
for defining general system parameters.
Set Date
Access Level Required: OPERATOR
Allows the user to specify the present date. This value
is critical to logging system shutdowns accurately and
for utilizing the scheduling capabilities. When prompted
to enter a date value, the user must enter the day, month,
and four-digit year (using leading zeroes as necessary).
If within range, the value will be accepted. If out of
range, the user is prompted for the information again.
At this point the user may retry the date entry, or cancel
the programming attempt.
DISPLAY ONLY
Chilled Liquid Pump Operation:
Displays Standard or Enhanced
Refrigerant Selection:
Displays R134a
Anti-Recycle:
Displays Disabled or Enabled
Power Failure Restart:
Displays Manual or Automatic
Liquid Type:
Displays Water or Brine
46
Set Time
Access Level Required: OPERATOR
Allows the user to specify the present time. This value
is critical to logging system shutdowns accurately and
for utilizing the scheduling capabilities. When prompted
to enter a time value, the user must enter the hour and
minute desired (using leading zeroes as necessary). If
the chiller is presently set to 24-hour mode, the time
must be entered in the 24-hour format. Otherwise, the
user must also select AM or PM for the entered time. If
out of range, the user is prompted for the information
again. At this point the user may retry the time entry, or
cancel the programming attempt.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
Clock (Enabled / Disabled)
Access Level Required: OPERATOR
Allows the user to enable or disable the real-time clock
in order to conserve battery life. The clock will be
disabled during manufacturing and must be enabled at
system commissioning. In addition, when preparing for
prolonged shutdown the clock should once again be
disabled.
12/24 Hr
Access Level Required: OPERATOR
Allows the user to specify the format in which the time
will be presented to the user. This setpoint will affect
the display of the time on the chiller panel and on all
reports generated. 12-Hour time format will include the
AM and PM modifiers and show the range of time between 1:00 and 12:59, while the 24-Hour time format
will show the range of time between 0:00 and 23:59.
NAVIGATION
Diagnostics
Access Level Required: SERVICE
Moves to the sub-screen allowing limited diagnostic
capability while operating. Refer to YORK Service
Manual 160.81-M1.
Comms
Access Level Required: VIEW
Moves to the sub-screen allowing configuration of system communications.
Printer
Access Level Required: VIEW
Moves to the sub-screen allowing configuration and
control of printer functions.
Sales Order
Access Level Required: VIEW
Moves to the sub-screen displaying the Sales Order information for the chiller system.
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Operations
Access Level Required: VIEW
Moves to the sub-screen displaying operating parameters of the chiller system.
Schedule
Access Level Required: VIEW
Moves to the sub-screen allowing definition of the
chiller operation schedule.
User
Access Level Required: VIEW
Moves to the sub-screen allowing configuration of user
preferences.
YORK INTERNATIONAL
47
2
OptiView Control Center
FORM 160.81-O1 (402)
SCHEDULE SCREEN
FIG. 18
OVERVIEW
The schedule screen contains more programmable values than a normal display screen. As such, each programmable value is not linked to a specific button. Instead the Select key is used to enable the cursor arrows
which are used to highlight the day and the start or stop
time the user wishes to modify. At this point the user
may press the ‘T’ (Check) key to program the Start /
Stop times for that day.
In order for the Start / Stop combination to be utilized,
each Start time must have a corresponding Stop time
which occurs later in the day. The presently programmed
schedule for a given day can be cancelled by setting
both the Start and Stop time to 12:00AM. If the Start
time equals the Stop time (with any time other than
12:00AM), the chiller is OFF for that day. If the user
desires the chiller to operate continuously through several days, the Stop time of Day 1 can be set to 11:59
PM and the Start time of Day 2 can be set to 12:00 AM.
The chiller will not stop but continue to operate until
the stop of Day 2.
The user has the ability to define a standard set of Start /
Stop times which are utilized every week. The user may
then specify exception Start / Stop combinations for any
day of the week up to 6 weeks in advance. At the end of
each week the schedule for the next week is created by
combining the standard week definition and the next defined exception week. The schedule is then updated as
48
00232VIP
each of the exception weeks “shifts down”, leaving a
new, blank exception week in the 6th week slot.
DISPLAY ONLY
None
PROGRAMMABLE
Standard Week Start/Stop Times
Access Level Required: OPERATOR
For each day of the week, the user may specify a time
for the chiller to start and a time for the chiller to stop.
The times specified in this entry week will be used as
the default for every week of chiller operation.
Exception Start/Stop Times
Access Level Required: OPERATOR
For each day of the week, the user may specify a time
for the chiller to start and a time for the chiller to stop.
These Start / Stop combinations may be scheduled up
to five (5) weeks in advance and also for the present
week. As each week goes by, the new schedule will be
created for the present week using the Exception specification in combination with the Standard week definition, as described above.
Schedule (Enabled / Disabled)
Access Level Required: OPERATOR
YORK INTERNATIONAL
FORM 160.81-O1 (402)
Repeat Sunday Schedule
Access Level Required: OPERATOR
Duplicates the schedule defined for Sunday for the remainder of the standard weekdays.
–
day. Use , , • or – cursor arrows to place the box
around the desired start or stop time for a given day.
–
Allows the user to enable or disable the monitoring function which enforces the scheduled starting and stopping of the chiller.
Print
Access Level Required: VIEW
Generates a Schedule print report.
NAVIGATION
Reset All Exception Days
Access Level Required: OPERATOR
Deletes all programming for exception days within the
next 6 weeks.
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Select
Access Level Required: OPERATOR
Places a selection box around a start time for a given
Setup
Access Level Required: VIEW
Return to the previous setup screen.
YORK INTERNATIONAL
2
49
OptiView Control Center
FORM 160.81-O1 (402)
USER SCREEN
00343VIP
FIG. 19
OVERVIEW
This screen allows definition of custom User ID’s and
matching passwords. This allows the building administrator to assign custom passwords to those who are
authorized to maintain the chiller.
Each Custom User value is not linked to a specific button.
Instead, the Change button is pressed which enables the
cursor arrows which are used to highlight the Custom User
parameter the user wishes to modify. At this point the ‘T’
(Check) button is pressed and the value may be entered.
DISPLAY ONLY
None
PROGRAMMABLE
System Language
Access Level Required: OPERATOR
Allows the user to define the language for all Screens.
The desired language is selected by scrolling through the
list of those available. English is the Default language and
is selected by pressing the s key when the dialog box appears during the selection process. The selected language
will not be displayed until after the user navigates from
the USER Screen to another Screen.
English / Metric Units
Access Level Required: OPERATOR
Define the unit system (English or Metric) used by the
chiller display.
50
Custom User ID (4)
Access Level Required: SERVICE
This allows the user to specify up to four (4) Custom
User ID values. Each user ID will then require a corresponding Password and User Level. A User ID can be
defined for various maintenance personnel. Service Technicians refer to YORK Service Manual 160.81-M1.
Custom User Password (4)
Access Level Required: SERVICE
This allows the user to specify up to four (4) Custom
Password values. Each Password will then require a
corresponding User ID and User Level. Service Technicians refer to YORK Service Manual 160.81-M1.
Custom User Access Level (4)
Access Level Required: SERVICE
This allows the user to specify up to four (4) Custom
User Access Levels. Each Access Level will then require
a corresponding Password and User ID. Service Technicians refer to YORK Service Manual 160.81-M1.
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Setup
Access Level Required: VIEW
Return to the Setup Screen.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
COMMS SCREEN
2
00470VIP
FIG. 20
OVERVIEW
This screen allows definition of the necessary communications parameters. Refer to PRINTER Section of this
book for details of the Printer connections and setup.
Presently, there are no COM 2 communications features available.
DISPLAY ONLY
None
PROGRAMMABLE
Chiller ID
Access Level Required: OPERATOR
Define the numeric chiller ID when used within an ISN
network of chillers. This ID number is also printed at
the top of reports obtained with a local printer.
Printer Setup and COM 2 Setup
Access Level Required: OPERATOR
Pressing either key places a green selection box around
the first changeable parameter. Use the • and – keys
to place the selection box around the desired parameter
to be changed. With the selection box around the desired parameter, press the ENTER (T) key. A dialog
box is displayed permitting data entry.
Printer Parity Bit(s)
Define the number of parity bits with which the panel
shall communicate to the printer.
Printer Stop Bit(s)
Define the number of stop bits with which the panel
shall communicate to the printer.
COM 2 Baud Rate
Define the baud rate at which the panel shall communicate through the modem port.
COM 2 Data Bit(s)
Define the number of data bits with which the panel
shall communicate to the modem port.
COM 2 Parity Bit(s)
Define the number of parity bits with which the panel
shall communicate through the modem port.
COM 2 Stop Bit(s)
Define the number of stop bits with which the panel
shall communicate through the modem port.
NAVIGATION
Printer Baud Rate
Define the baud rate at which the panel shall communicate to the printer.
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Printer Data Bit(s)
Define the number of data bits with which the panel
shall communicate to the printer.
Setup
Access Level Required: VIEW
Return to the Setup Screen.
YORK INTERNATIONAL
51
OptiView Control Center
FORM 160.81-O1 (402)
PRINTER SCREEN
00235VIP
FIG. 21
OVERVIEW
This screen allows definition of the necessary communications parameters for the printer. Refer to PRINTER
section of this book for details of the Printer connections and setup.
DISPLAY ONLY
Time Remaining Until Next Print
Displays the time until the next print log will occur, if
the function is enabled.
PROGRAMMABLE
Log Start Time
Access Level Required: OPERATOR
Set the time at which scheduled print logs will begin.
Output Interval
Access Level Required: OPERATOR
Define the interval at which log printing will occur.
Automatic Printer Logging (Enabled / Disabled)
Access Level Required: OPERATOR
Enable the printer to begin printing status reports beginning at the programmed start time and recurring at
the interval defined above.
52
Printer Type
Access Level Required: OPERATOR
Define the printer type connected to the chiller system.
Print Report
Access Level Required: OPERATOR
Select the report type to print when the Print Report key
is selected. This can vary from Status report (present
system parameters), Setpoints report (present value of
the system setpoints), Schedule report (present value of
the system schedule times), or a Sales Order Data report
(information provided on the Sales Order screen). A print
report is generated upon completion of selection.
Print All Histories
Access Level Required: OPERATOR
Generate a report of the system data at the time of all
stored shutdowns.
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Setup
Access Level Required: VIEW
Return to the Setup Screen.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
SALES ORDER SCREEN
2
FIG. 22
OVERVIEW
This screen allows definition of the sales order parameters. The Commissioning date is entered by the
YORK Service Technician at the time of chiller commissioning. These values should never be changed or
entered by anyone other than a qualified Service Technician. Entry instructions are included in the YORK
Service Manual 160.81-M1. The remainder of the values are entered at the YORK Factory during the manufacturing of the chiller.
DISPLAY ONLY
Model Number
Factory defined model number of the chiller system.
Panel Serial Number
Factory defined serial number for the micropanel.
Chiller Serial Number
Factory defined serial number for the chiller system.
YORK Order Number
Factory defined order number under which the chiller
was sold.
System Information
Factory defined conditions for which the chiller was
originally rated and sold.
YORK INTERNATIONAL
00236VIP
Condenser and Evaporator Design Load
Information
Factory defined description of the condenser and evaporator configuration at time of shipment.
Nameplate Information
Factory defined information about the chiller motor configuration.
PROGRAMMABLE
Commissioning Date
Access Level Required: SERVICE
Define the date at which the chiller was commissioned.
Job Name and Location
Access Level Required: SERVICE
Factory defined job name and location the chiller is
destined for.
Print
Access level required: VIEW
Generates a Sales Order print report.
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Setup
Access Level Required: VIEW
Return to the Setup Screen.
53
OptiView Control Center
FORM 160.81-O1 (402)
OPERATIONS SCREEN
FIG. 23
OVERVIEW
This screen allows definition of general parameters having to do with the operation of the chiller.
DISPLAY ONLY
Chiller Run Time
Displays the amount of time the chiller has been running
since the last start signal was received. Value is reset to
zero when the chiller shuts down. It remains at zero while
shutdown and during “Start Sequence Initiated”.
00561VIP
Operating Hours
Access Level Required: ADMIN
Displays the total accumulated run time of the chiller.
This may be reprogrammed to a desired value (generally when this value has been reset due to a Microboard
replacement), but should not be done so arbitrarily.
Control Source
Access Level Required: OPERATOR
Define whether the control of the chiller will be Local,
Digital Remote, Analog Remote, Modem Remote or ISN
Remote.
Edit Phone Numbers
Access Level Required: SERVICE
Displays up to two service phone numbers. The Regional service phone number is displayed as the first
number. Although the label and number can be changed
appropriately, the default for this entry is “York Intl
North American Toll Free Number 1-800-861-1001”.
The Local service phone number is displayed as the
second number. Although blank by default, the appropriate label and number can be entered by a Service
Technician. Service Technicians refer to Service Manual
160.81-M1.
Number of Starts
Access Level Required: ADMIN
Displays the number of the starts the chiller has initiated. This may be reprogrammed to a desired value, (generally when this value has been reset due to a Microboard
replacement), but should not be done so arbitrarily.
Level Control (Enabled/Disabled)
Access Level Required: SERVICE
Enables and Disables the Refrigerant Level Control
feature. Service Technicians refer to YORK Service
manual 160.81-M1.
PROGRAMMABLE
54
YORK INTERNATIONAL
FORM 160.81-O1 (402)
Hot Gas Bypass (Enabled / Disabled)
Access Level Required: SERVICE
Enables and Disables the optional Hot Gas Bypass
Control Feature.
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Setup
Access Level Required: VIEW
Return to the Setup Screen.
YORK INTERNATIONAL
2
55
OptiView Control Center
FORM 160.81-O1 (402)
HISTORY SCREEN
FIG. 24
OVERVIEW
This screen allows the user to browse through the faults.
In order to get a more thorough reporting of the system
conditions at the time of the recorded shutdown, move
to the sub-screen HISTORY DETAILS.
The user may use the Select Fault button to select the
history to view. At this point the View Details button is
used to jump to a sub-screen containing stored chiller
parameters values at the time of the shutdown. Additionally, the Print History button can be used to generate a hard-copy report of the parameter values at the
time of the shutdown.
DISPLAY ONLY
Last Normal Shutdown
This window displays the date and time and the description of the last normal shutdown. A normal shutdown is defined as:
- Local (Panel rocker switch)
- Remote (Digital, Analog or ISN)
Last Fault While Running
This window displays the date and time and the description of the last safety or cycling shutdown while
the system was running.
56
00656VIP
Last Ten Faults
This window displays a chronological listing (most recent first) of the date and time and the description of
the last ten safety or cycling shutdowns that occur while
the system is running or stopped.
PROGRAMMABLE
Print History
Access Level Required: VIEW
This generates a report listing the status of the chiller
parameters at the time of the selected shutdown.
Print All Histories
Access Level Required: VIEW
This generates a report listing the status of the chiller
parameters at the time of each of the stored shutdowns.
NAVIGATION
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
View Details
Access Level Required: VIEW
Causes a move to a sub-screen containing the value of
select chiller parameters at the time of the associated
shutdown.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
Trending
Access Level Required: VIEW
Causes a move to a sub-screen allowing the user to view
trending data on selected chiller parameters.
Custom View
Access Level Required: VIEW
Causes a move to a sub-screen allowing the user to view
the Custom Setup Screen.
2
Security Log
(Flash Memory Card version C.MLM.05.02.xxx and
later)
Access Level Required: SERVICE
Causes a move to a sub-screen allowing the user to view
a record of the last 75 setpoint changes.
YORK INTERNATIONAL
57
OptiView Control Center
FORM 160.81-O1 (402)
HISTORY DETAILS SCREEN
00655VIP
FIG. 25
OVERVIEW
This screen allows the user to see an on-screen printout
of all the system parameters at the time of the selected
shutdown. Not all screens are shown above. The number of screens required to display all of the data varies
according to the type of motor starter and options
applied.
DISPLAY ONLY
History Printout
This is the on-screen printout of the system parameters.
Page Down
Access Level Required: VIEW
Scroll down in the displayed data (if applicable).
Print History
Access Level Required: VIEW
This generates a report listing the status of the chiller
parameters at the time of the selected shutdown.
NAVIGATION
PROGRAMMABLE
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Page Up
Access Level Required: VIEW
Scroll up in the displayed data (if applicable).
History
Access Level Required: VIEW
Causes a return to the History Screen.
58
YORK INTERNATIONAL
FORM 160.81-O1 (402)
SECURITY LOG SCREEN
2
00657VIP
FIG. 26
OVERVIEW
PROGRAMMABLE
(This screen only available with Flash Memory Card
version C.MLM.05.02.xxx and later)
Log Entry
Allows the user to select a particular setpoint change
for detail viewing.
This screen displays a listing of the last 75 setpoint
changes. They are listed and numbered in reverse order
in which they were changed, with the most recent listed
as number 1. Multiple pages are necessary to display all
75 changes. Not all setpoints are logged. Service technicians refer to list in YORK Service Manual 160.81-M1.
The details of any setpoint change can be viewed by
navigating to a subscreen that displays the date and time
of the change, Access Level and USER ID used to make
the change, the old setpoint value and the new setpoint
value. Note! Requires a login access level of SERVICE.
DISPLAY ONLY
Category
Displays the category of the setpoint (motor, evaporator, condenser, etc.)
Setpoint
Displays the setpoint that was changed.
Print
Generates a detailed report of all setpoint changes listed
in the setpoint change log.
Page Up
Scroll up in the displayed data (if applicable).
Page Down
Scroll down in the displayed data (if applicable).
NAVIGATION
Home
Access Level Required: SERVICE
Causes an instant return to the Home Screen.
History
Access Level Required: SERVICE
Causes an instant return to the History Screen.
View Details
Access Level Required: SERVICE
Causes a move to a subscreen containing the details of
the setpoint change selected with the Log Entry key.
New Value
Displays the value that was entered at the time of the
setpoint change.
YORK INTERNATIONAL
59
OptiView Control Center
FORM 160.81-O1 (402)
SECURITY LOG DETAILS SCREEN
00658VIP
FIG. 27
OVERVIEW
(This screen only available with Flash Memory Card
version C.MLM.05.02.xxx and later)
This screen allows the user to view the details of a logged
setpoint change, selected from the list on the Security
Log Screen. The date and time the setpoint was changed,
the new and old setpoint value and access level and
user ID used to make the change are displayed. The
data on this screen can be printed.
Note! Requires a login access level of SERVICE.
DISPLAY ONLY
Description
Displays the setpoint/category that was changed.
Time
Displays the time the setpoint was changed.
Date
Displays the date the setpoint was changed.
Access Level
Displays the Login Access Level used to make the
setpoint change.
60
User ID
Displays the login User ID used to make the setpoint
change.
Old Value
Displays the previous setpoint value.
New Value
Displays the value entered at the time of the setpoint
change.
PROGRAMMABLE
Print
Generates a report of change parameters displayed on
this screen.
NAVIGATION
Home
Access Level Required: SERVICE
Causes an instant return to the Home Screen.
Security Log
Access Level Required: SERVICE
Causes an instant return to the Security Log Screen.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
CUSTOM VIEW SCREEN
2
00428VIP
FIG. 28
OVERVIEW
NAVIGATION
This screen allows up to 10 Service Technician selected
parameters to be displayed. These parameters are selected from a list on the Custom View Setup Screen.
This allows the Service Technician to display parameters pertinent to a particular problem during troubleshooting. At completion of the service call, the display
can be cleared or the parameters can be left there for
monitoring by operations personnel.
Home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
DISPLAY ONLY
None
History
Access Level Required: VIEW
Causes an instant return to the History Screen.
Setup
Access Level Required: SERVICE
Causes a jump to the sub-screen that allows selection
of the parameters to be displayed.
PROGRAMMABLE
Print
Access Level Required: VIEW
This generates a listing of the parameters displayed
on this screen.
YORK INTERNATIONAL
61
OptiView Control Center
FORM 160.81-O1 (402)
CUSTOM VIEW SETUP
00241VIP
FIG. 29
OVERVIEW
This screen allows the Service technician to select up
to 10 parameters for display on the Custom View Screen.
Requires a login access level of SERVICE. Service Technicians refer to
YORK Service Manual 160.80-M1 for
operation instructions and explanation
of all programmable setpoints and displayed values.
DISPLAY ONLY
Slot Numbers
Lists the available parameters that can be displayed.
The desired parameters for display are selected from
this list.
PROGRAMMABLE
Page Up
Scroll up through list of available parameters.
Page Down
Scroll down through list of available parameters.
Select
First use the Page Up and Page Down keys to scroll
through the Slot Numbers list and note the number of
the parameter(s) to be displayed. Pressing the Select
62
key places a green colored selection box around Custom Slot 1. If it is desired to change an already entered
parameter, use the • and – keys to place the selection
box around the slot number to be changed. With the
selection box around the slot number to be changed or
entered, press the ENTER (T) key. A dialog box is displayed permitting data entry. Using the numeric keypad keys, enter the desired slot number and press the
ENTER (T) key.
Custom Slot (1-10)
Use the Select key and numeric keypad keys as described above and enter the slot number from Slot Numbers list. Setting the Slot number to zero clears the display of this slot number.
Clear Display
Pressing this key clears all selected parameters from
the Custom View screen.
NAVIGATION
Home
Access Level Required: VIEW
Causes a return to the Home Screen.
Custom View
Access Level Required: SERVICE
Causes a return to the Custom View Screen.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
2
THIS PAGE INTENTIONALLY LEFT BLANK
TO MAINTAIN FORMAT
YORK INTERNATIONAL
63
OptiView Control Center
FORM 160.81-O1 (402)
TREND SCREEN
FIG. 30
OVERVIEW
As many as six Operator selected parameters can be
plotted in an X/Y graph format. The X-Axis is scaled
per the selected Data Collection Interval and displayed
in a time of day or elapsed time format, as selected with
the X-axis toggle key. The Y-Axis is scaled for each
parameter per the selected minimum and maximum
value for each parameter. Analog parameters are scaled
in pressure, temperature, volts, amps, hertz or time.
Digital on/off parameters are scaled as zero (off) and
one (on). Only one Y-Axis label is displayed at a time.
The Y-Axis Toggle Key is used to toggle the Y-Axis
labels through the different parameters. The Y-Axis label that is being displayed is identified at the top of
the graph. The DATA SELECT key is used to display
all trended Data Points simultaneously or select a
single Data Point for display. For identification, each
plotted parameter and associated Y-Axis labeling is
color coordinated.
The parameters are sampled at the selected Data Collection Interval and plotted using 450 data points across
the X-Axis. If the actual value of the sampled parameter is less than the Y-Axis label minimum for that parameter, the value will be plotted at the minimum value.
Similarly, if the actual value is greater than the Y-Axis
label maximum for that parameter, the value will be
plotted at the maximum value.
64
00472VIP
There are three types of charts that can be created: ONE
SCREEN, CONTINUOUS or TRIGGERED. When
plotting reaches the end of the X-axis, if ONE SCREEN
is selected, trending stops and data is frozen. If CONTINUOUS is selected, the oldest data is dropped from
the left-hand side of the graph at the next collection
interval. Thereafter, the oldest data is dropped from the
left hand-side of the graph at each data collection interval. If TRIGGERED is selected, data collection can be
set to start or stop based upon the selected TRIGGER
ACTION (START or STOP). If START is selected, data
collection will not begin until the Triggers have been
satisfied and any selected TRIGGER DELAY has
elapsed. Data collection will stop at the completion of
one screen of data as with the ONE SCREEN. If STOP
is selected, data collection will not stop until the Triggers have been satisfied and any selected TRIGGER
DELAY has elapsed.
If a power failure occurs while the trending is running,
the trending is stopped. Upon restoration of power, the
last screen of data that was collected will be displayed
on the trending screen. The START key must be pressed
to initiate a new trend screen.
DISPLAY ONLY
This screen allows the user to view the graphical trending of the selected parameters and is also a gateway to
the graph setup screens.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
A red screen with the words “TREND
MAX MUST BE > TREND MIN” will
appear if the Y-Axis minimum has been
programmed to a value that is greater than
the Y-Axis maximum for any parameter.
If this appears, proceed to the Trend Setup
Screen to change the values.
PROGRAMMABLE
Start
Access Level Required: OPERATOR
Pressing this key clears the graph, starts a new graph,
sets the time of day to the present clock time and begins the trending. This key is only available if trending
is stopped. If the selected Chart Type is TRIGGERED
and TRIGGER ACTION is set to START, data collection will not begin until the Triggers have been satisfied and any selected TRIGGER DELAY has elapsed.
Otherwise, data collection will begin immediately.
Stop
Access Level Required: OPERATOR
Pressing this key stops the trending. The trend data is
frozen on the display until another graph is started with
the START key. The STOP key is only available if trending is running.
Print
Access Level Required: VIEW
Allows the data on the trend screen to be printed in
tabular format. If set to EXISTING, a snapshot of the
data presently on the screen is sent to the printer. If set
to NEW, all data collected after pressing this key will
be sent to the printer as it is collected. If set to DIS-
YORK INTERNATIONAL
ABLED, no data is sent to the printer. Refer to PRINTERS section of this book for printout example.
Data Select
Access Level required: VIEW
Allows the user to display all trended data points simultaneously or select a single trended data point for
display, hiding the other data points. Selections are ALL
DATA or DATA POINT X (1-6).
Y-Axis
Access Level Required: VIEW
This key toggles the Y-Axis labels of the graph. Each
key press changes the label to another of the selected
parameters.
X-Axis
Access Level Required: VIEW
This key toggles the X-Axis labels of the graph. Each
key press alternates the scaling between time of day and
elapsed time. The Time of Day scaling is in 24-hour format. The Elapsed Time scaling is the time elapsed since
the START key was pressed, starting the trending.
NAVIGATION
Home
Access Level Required: VIEW
Causes a return to the Home Screen.
History
Access Level Required: VIEW
Causes a return to the History Screen.
Trend Setup
Access Level Required: OPERATOR
Only displayed if the trending is stopped. Causes a jump
to a sub-screen for configuring the trending display.
65
2
OptiView Control Center
FORM 160.81-O1 (402)
TREND SETUP SCREEN
FIG. 31
OVERVIEW
This screen is used to configure the trending screen.
The parameters to be trended are selected from the
Common Slots Screen or Common Slots Master list and
entered as Slot Numbers for Data Points 1 through 6.
The Y-Axis minimum and maximum values for each
parameter are entered as Data Point Min and Data Point
Max for Data Points 1 through 6. The interval at which
all the parameters are sampled is selected as the Data
Collection Interval.
DISPLAY ONLY
None
PROGRAMMABLE
Chart Type
Access Level Required: OPERATOR
Selects CONTINUOUS, ONE SCREEN or TRIGGERED type of graph.
Collection Interval
Access Level Required: OPERATOR
Selects the interval at which the parameters are sampled.
There are 450 data points displayed across the X-Axis
of the graph. Each point represents the instantaneous
value of the parameter. The user selects the time interval between these points. This is called the DATA COL66
00473VIP
LECTION INTERVAL, or the interval at which the
parameter is sampled. This interval is programmable
over the range of 1 second to 3600 seconds (1 hour), in
one second increments. The selected interval not only
determines the sample interval, but also the full screen
time display. The full screen time display is a result of
the selected interval in seconds, multiplied by the 450
data points. For example, if the Data Collection Interval is programmed for 900 seconds, the parameter
would be sampled every 900 seconds, with the last 112.5
hours (4.7 days) of data viewable on the screen. Therefore, the selected interval is a compromise between resolution and full screen time display. Select the desired
Data Collection Interval as follows:
1. Determine the desired time interval (in seconds),
between data samples.
2. Calculate the full screen time display as follows:
• 450 x Data Collection Interval = full screen seconds
• full screen seconds / 60 = full screen minutes
• full screen minutes / 60 = full screen hours
• full screen hours / 24 = full screen days
3. Decide if the resultant sample interval and full screen
display meet the requirements. If not, select a different sample interval.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
Select
Access Level Required: OPERATOR
This key is used to enter the slot numbers and the minimum and maximum Y-Axis values of each parameter
to be trended. Pressing this key places a yellow box
around Data Point 1 Slot Number. Use the • and –
navigation keys to place the box around the value of
Data Points 1 through 6 to be changed. With the desired value selected, press the ✓ key. A dialog box is
displayed permitting data entry.
Data Point Slot # (1-6)
Access Level Required: OPERATOR
Use the SELECT key as described above and enter the
slot number from the Common Slots Screen or Master
Slot Number List of the desired parameter to be trended.
The selected parameter description will be displayed
for the Data Point. Setting this slot number to zero will
disable trending for that particular Data Point. Any or
all points can be disabled.
Data Point Min (1-6)
Access Level Required: OPERATOR
Only displayed if the Associated Slot Number is not
Zero. This is the minimum value displayed for the YAxis. Selecting a parameter for a Data Point sets this to
the default value, which is the lowest value allowed for
that parameter. It can be changed to a value that provides a more appropriate resolution for the parameter
being monitored. To change, use the SELECT key as
described above and enter the desired value. The value
must always be set to a value less than the Data Point
Max. Otherwise, a red graph is displayed on the Trend
Screen with the words “TREND MAX MUST BE >
TREND MIN”. If the parameter selected for this data
point is a digital type (on/off), this value must be set to
zero (0). Zero indicates the OFF state.
Data Point Max (1-6)
Access Level Required: OPERATOR
Only displayed if the associated slot number is not zero.
YORK INTERNATIONAL
This is the maximum value displayed for the Y-Axis.
Selecting a parameter for a Data Point sets this to the
default value, which is the highest value allowed for
that parameter. It can be changed to a value that provides a more appropriate resolution for the parameter
being monitored. To change, use the SELECT key as
described above and enter the desired value. The value
must always be set to a value greater than the Data Point
Min. Otherwise, a red graph is displayed on the Trend
Screen with the words “TREND MAX MUST BE >
TREND MIN”. There are 20 Y-axis divisions. If a MINMAX span is selected that is not evenly divided by 20,
the Program will automatically select the next higher
MAX value that makes the span evenly divided by 20.
For example, if 0.0 is selected as the MIN, and 69.0 as
the MAX, the Program will insert 70.0 as the MAX
value. If the parameter selected for this data point is a
digital type (on/off), this value must be set to one (1).
One indicates the on state.
NAVIGATION
Home
Causes a return to the Home Screen.
Trending
Causes a return to the Trending Screen.
Slot Numbers
Causes a jump to a sub-screen that lists the slot numbers of the most commonly monitored parameters. The
desired parameters to be plotted are selected from this
screen.
Triggers
Causes a jump to the Advanced Trend Setup Screen,
where the start/stop Triggers can be setup. Only displayed if TRIGGERED has been selected as Chart Type.
67
2
OptiView Control Center
FORM 160.81-O1 (402)
ADVANCED TREND SETUP SCREEN
00474VIP
FIG. 32
OVERVIEW
The desired data collection start/stop triggers are setup
on this screen. The trend data collection can be set to
start or stop based upon the status of up to two selected
Triggers. The Triggers can consist of digital events or
analog parameters compared to thresholds. The Triggers can be used individually or in combination. The
digital and analog parameters are selected from the
Common Slots Screen (or Master Slot Numbers List in
this book).
The parameter selected as the Primary Trigger is compared to a value selected as the Primary Test, using the
Primary Operator as a comparator. If it is evaluated as
true, then the data collection is started or stopped (after
any selected Trigger delay) per the selected Trigger
Action.
A Secondary Trigger can be evaluated with the Primary
Trigger to start/stop data collection. The Primary to
Secondary Operator is used to define the Trigger combinations required to be true to start/stop data collection. The Secondary Trigger is setup and evaluated the
same as the Primary Trigger.
Entry fields are as follows:
If Primary Trigger
Is Primary Operator Primary Test
68
Primary to Secondary Operator
Secondary Trigger
Is Secondary Operator Secondary Test
Then Trigger Action the Data Collection
With a delay of Trigger Delay
After the desired Triggers are set, the START key on
the TREND Screen must be manually pressed before
the triggers will be evaluated. While waiting for the
triggers to start or stop data collection, a status message is displayed in the upper right corner of the TREND
Screen describing the pending action.
DISPLAY ONLY
None
PROGRAMMABLE
Primary Trigger
Access Level Required: OPERATOR
Selects the first parameter to be evaluated. Selection is
made from the Slot Numbers listing on the Trend Common Slots Screen or the Master Slot Numbers List in
this book. Setting this slot number to zero disables the
Primary Trigger.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
Primary Operator
Access Level Required: OPERATOR
Selects the comparator for the Primary Trigger’s relationship to the Primary Test. If the Primary Trigger is
an analog value, selections are: <, <=, =, =>, >. If the
Primary Trigger is a digital event, selections are: Equal
To, Not Equal To.
Primary Test
Access Level Required: OPERATOR
Selects the value or condition that the Primary Trigger
is compared to. Selection ranges from the Primary Trigger minimum value to the Primary Trigger maximum
value.
Trigger Action
Access Level Required: OPERATOR
Selects whether the trend data collection will Start or
Stop when the Trigger comparisons are true. If set to
Start, data collection will stop after one screen of data
is collected.
Trigger Delay
Access Level Required: OPERATOR
Allows the data collection start or stop to be delayed
after the Triggers evaluate as true. The delay is selectable from 1 to 864000 seconds (10 days). Display is in
days, hours, minutes and seconds. The delay timer begins when the triggers evaluate as true. If the Trigger
Action is set to Start, data collection will begin after
the triggers evaluate as true and the delay timer has
elapsed. If the Trigger Action is set to Stop, data collection will stop after the Triggers evaluate as true and
the delay timer has elapsed.
Primary to Secondary Operator
Access Level Required: OPERATOR
Selects whether the Primary Trigger, Secondary Trigger or both have to be true in order to start or stop data
collection. Selections are AND, OR, XOR and None.
If NONE is selected, the Secondary Trigger is disabled.
YORK INTERNATIONAL
Data collection will start/stop (as selected with Trigger
Action) when:
• If AND selected: Both Primary AND Secondary are
true
• If OR selected: Either Primary OR Secondary (or
both) are true
• If XOR selected: Either Primary OR Secondary (but
not both) are true
Secondary Trigger
Access Level Required: OPERATOR
Selects the second parameter to be evaluated. Selection is made from the Slot Numbers listing on the Trend
Common Slots Screen or the Master Slot Numbers List
in this book. Setting this slot number to zero disables
the Secondary Trigger.
Secondary Operator
Access Level required: OPERATOR
Selects the comparator for the Secondary Trigger’s relationship to the Secondary Test. If the Secondary trigger is an Analog value, selections are: <, <=, =, =>, >.
If the Secondary Trigger is a digital event, selections
are: Equal To, Not Equal To.
Secondary Test
Access Level Required: OPERATOR
Selects the value or condition that the Secondary Trigger is compared to. Selection ranges from the Secondary
Trigger minimum to the Secondary Trigger maximum.
NAVIGATION
Home
Causes an instant return to the Home Screen.
Trend Setup
Causes an instant return to the Trend Setup Screen.
69
2
OptiView Control Center
FORM 160.81-O1 (402)
COMMON SLOTS SCREEN
FIG. 33
00244VIP
OVERVIEW
PROGRAMMABLE
This screen displays the slot numbers of the commonly
monitored parameters. The slot numbers for the remainder of the available parameters are listed on the Master
Slot Numbers List that follows.
Page Down
Access Level Required: OPERATOR
Scroll down in the displayed data.
From these lists, select up to six parameters to be trended.
Return to the Trend Setup Screen and enter the parameters Slot Numbers into Data Points 1 through 6.
Requires a login access level of
OPERATOR or higher.
Page Up
Access Level Required: OPERATOR
Scroll up in the displayed data.
Print
Access Level Required: OPERATOR
Generates a list of the slot numbers of the available
parameters.
NAVIGATION
DISPLAY ONLY
Home
Causes an instant return to the Home Screen.
Slot Numbers
These are the slot numbers of the most commonly used
parameters.
Trend Setup
Causes a return to the Trend Setup Screen.
70
YORK INTERNATIONAL
FORM 160.81-O1 (402)
MASTER SLOT NUMBERS LIST FOR USE WITH TREND FEATURE
SLOT
NO.
DESCRIPTION
256
System: Chiller State
259
260
261
System: Are Safety Shutdown Contacts Closed
System: Are Cycling Shutdown Contacts Closed
System: Are Anticipatory Alarm Contacts Closed
262
264
265
266
267
System:
System:
System:
System:
System:
Operating Hours
Number of Starts
Is Stop Switch Closed
Is Start Switch Closed
Is Remote Ready to Start
280
281
282
283
284
External
External
External
External
External
Contact: Is Remote Stop Closed
Contact: Is Remote Start Closed
Contact: Is Multi-Unit Cycling Closed
Contact: Is Remote Cycling Closed
Contact: Is Auxiliary Safety Open
285
287
288
289
290
291
293
Dipswitch: Is Anti-Recycle Enabled
Dipswitch: Is Diagnostics Enabled
Jumper: Liquid Type
Dipswitch: Chilled Liquid Pump Operation
Jumper: Motor Type
Dipswitch: Power Failure Restart
Jumper: Refrigerant Selection
304
305
306
307
Options:
Options:
Options:
Options:
336
337
Security: Log In Level
Security: Log In User ID
512
Sched: Is Schedule Enabled
1296
1298
Discharge: Discharge/Oil Temperature
Discharge: Superheat Temperature
1543
Oil Supply Solenoid: Is Solenoid On
1792
1793
1794
1795
Leaving
Leaving
Leaving
Leaving
1796
1797
Leaving Chilled Liquid: Local Temperature Setpoint
Leaving Chilled Liquid: Remote Analog Temperature Setpoint
Leaving Chilled Liquid: Remote ISN Temperature
Setpoint
Leaving Chilled Liquid: Remote Modem Temperature Setpoint
1798
1799
Control Mode
System Language
Chiller ID Number
Display Mode
Chilled Liquid: Temperature
Chilled Liquid: Temperature Differential
Chilled Liquid: Is Flow Switch Closed
Chilled Liquid: Is Pump On
YORK INTERNATIONAL
SLOT
NO.
1800
1801
1802
1803
1804
1805
1806
DESCRIPTION
Leaving Chilled Liquid: Selected Temperature
Setpoint
Leaving Chilled Liquid: Control Sensitivity
Leaving Chilled Liquid: Remote Temperature Range
Leaving Chilled Liquid: Restart Temperature Offset
Leaving Chilled Liquid: Restart Temperature
Setpoint
Leaving Chilled Liquid: Shutdown Temperature Offset
Leaving Chilled Liquid: Shutdown Temperature
Setpoint
1807
Return Chilled Liquid: Temperature
1808
1809
1810
1811
1812
1813
Evaporator:
Evaporator:
Evaporator:
Evaporator:
Evaporator:
Evaporator:
1815
Smart Freeze Protection: Is Control Enabled
1818
2048
2049
2050
Leaving Chilled Liquid: Remote Digital Temperature
Setpoint
Leaving Condenser Liquid: Temperature
Leaving Condenser Liquid: Is Flow Switch Closed
Leaving Condenser Liquid: Is Pump On
2051
Return Condenser Liquid: Temperature
2052
2053
2054
2057
2058
Condenser:
Condenser:
Condenser:
Condenser:
Condenser:
2059
SubCooling: Temperature
2304
2305
2306
2307
Motor: Starter Type
Motor: Is Motor Starter On
Motor: Current %FLA
Motor: Is Motor Controller Switch Open
2308
2309
2310
2311
2312
Motor:
Motor:
Motor:
Motor:
Motor:
Pressure
Saturation Temperature
Small Temperature Difference
Is Refrigerant Sensor Present
Refrigerant Temperature
Delta P / P
Pressure
Saturation Temperature
Small Temperature Difference
Is High Pressure Switch Closed
High Pressure Warning Threshold
Current Limit Local Setpoint
Current Limit Remote Analog Setpoint
Current Limit Remote ISN Setpoint
Current Limit Remote Modem Setpoint
Current Limit Selected Setpoint
71
2
OptiView Control Center
FORM 160.81-O1 (402)
SLOT
NO.
DESCRIPTION
SLOT
NO.
DESCRIPTION
2313
2314
2315
2316
Motor: Pulldown Demand Time Remaining
Motor: Pulldown Demand Limit Setpoint
Motor: Pulldown Demand Time Setpoint
Motor: Anti-Recycle Time Remaining
2585
2586
2587
Serial SSS: Is Serial Communications OK
Serial SSS: Panel to SSS Comm Errors
Serial SSS: to Panel Comm Errors
8206
Refrigerant Level: Position
2317
Motor: Current Limit Remote Digital Setpoint
8207
Refrigerant Level: Is Valve Closing
Mod “B” SSS Only
8208
Refrigerant Level: Is Valve Opening
Serial
Serial
Serial
Serial
Serial
Serial
Serial
Serial
Serial
Serial
Serial
Serial
Serial
Serial
Serial
16388 Slide Valve: Position
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
72
SSS: Input Power
SSS: Kilowatt Hours
SSS: Phase A Current
SSS: Phase B Current
SSS: Phase C Current
SSS: Phase A Voltage
SSS: Phase B Voltage
SSS: Phase C Voltage
SSS: Phase A Temperature
SSS: Phase B Temperature
SSS: Phase C Temperature
SSS: Starter Model
SSS: Full Load Amps
SSS: Voltage Range
SSS: Starting Current
16401 Oil: Pressure
16402 Oil: Differential Pressure
(Oil Pressure – Evaporator Pressure)
16407 Oil: Differential Filter Pressure
(Discharge Pressure – Oil Pressure)
16415 Hot Gas Bypass: Is Solenoid On
16457 Head Pressure Control: Condenser Inlet
Valve Position
16461 Head Pressure Control: Head Pressure
16464 Head Pressure Control: Bypass Valve Position
17408 Discharge Pressure
17409 Liquid Injection: Is Solenoid On
YORK INTERNATIONAL
FORM 160.81-O1 (402)
2
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TO MAINTAIN FORMAT
YORK INTERNATIONAL
73
OptiView Control Center
FORM 160.81-O1 (402)
DISPLAY MESSAGES
The Status Bar of the Display contains a Status Line
and, beneath it a Details Line. The Status Line contains
a message describing the operating state of the chiller;
whether it is stopped, running, starting or shutting down.
The Details Line displays Warning, Cycling, Safety,
Start Inhibit and other messages that provide further
details of the Status Bar messages. The Status Messages listed below are displayed on the Status Line. All
other messages are displayed on the Details Line.
trol feature is Enabled or Disabled. If Disabled, period
is 30 seconds. If Enabled, duration is as programmed
with the Value Preset Time setpoint (30 to 120 seconds). Refer to description in Chiller Operating Overview in front of this book. The oil supply solenoid valve
1SOL is energized (opened) for the first 15 seconds.
During this 15 seconds period, the pressure transducer
AUTO-ZEROING sequence is performed unless it was
disabled.
To aid in the meaning of the message, messages are
displayed in different colors as follows:
Normal Operation messages - Green
Warning messages - Yellow
Cycling Shutdown messages - Orange
Safety Shutdown messages - Red
“SYSTEM RUN”
The chiller is running under the condition described in
the Details Line of the Status Bar.
Note that there are three types of shutdowns. If the
chiller shuts down on a CYCLING shutdown, it will
automatically restart when the condition that caused the
shutdown no longer exists. SAFETY shutdowns require
the operator to perform a manual reset at the keypad. A
NORMAL shutdown occurs from a properly requested
or scheduled shutdown. The event that caused the shutdown is displayed on the Details Line.
“SLIDE VALVE UNLOADING BEFORE SHUTDOWN”
To assure the Slide Valve unloads to < 30% position
during shutdown, it is unloaded to < 30% prior to shutting down the chiller on certain shutdowns.
STATUS MESSAGES
“SYSTEM READY TO START”
The chiller is shut down but will start upon receipt of a
Local or Remote start signal.
“CYCLING SHUTDOWN – AUTO RESTART”
The chiller is shut down on a CYCLING shutdown.
The cause of the shutdown is still in effect and is displayed on the Details line of the Status Bar. The chiller
will automatically restart when the CYCLING condition clears.
“SAFETY SHUTDOWN – MANUAL RESTART”
The chiller is shut down on a SAFETY shutdown. The
cause of the shutdown is still in effect and is displayed
on the Details line of the Status Bar. The chiller can be
started after the Safety condition clears and the Operator moves the COMPRESSOR switch to the STOPRESET (O) position.
“START SEQUENCE INITIATED”
A chiller start has been initiated. Duration of this period depends upon whether the Refrigerant Level Con74
“START INHIBIT”
The chiller is prevented from being started due to the
reason displayed on the Details Line of the Status bar.
While the chiller is running, if one of the below listed
shutdown commands occur and the slide valve position is > 30%, a continuous unload signal is applied to
the slide valve until its position is < 30%. While the
slide valve is unloading this status message is displayed.
The event that caused the shutdown is displayed on the
Details Line. When the slide valve position becomes <
30%, the chiller shuts down and the normal 2-minute
lockout period begins. The shutdown commands that
initiate this operation are:
•
•
•
•
MULTIUNIT CYCLING - CONTACTS OPEN
SYSTEM CYCLING - CONTACTS OPEN
REMOTE STOP
LEAVING CHILLED LIQUID - LOW
TEMPERATURE
• CONTROL PANEL - SCHEDULE
To assure that a defective slide valve actuator or mechanical problems cannot prevent a chiller shutdown,
if the slide valve has not unloaded to < 30% within 210
seconds of receiving the shutdown command, a shutdown occurs regardless of slide valve position. If the
chiller start is initiated and the slide valve is still >30%,
the “START INHIBIT” status message is displayed and
the message “SLIDE VALVE - POSITION > 30%” is
displayed on the detail line.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
“SYSTEM LOCKOUT DELAY”
Anytime the chiller shuts down for any reason, it cannot
be restarted for 2 minutes. This message is displayed during that time. This is so the refrigerant in the system settles
and the evaporator and condenser pressure equalize.
“LEAVING CHILLED LIQUID CONTROL”
The chiller is running, controlling the Leaving Chilled
Liquid to the Leaving Chilled Liquid Temperature Setpoint. There are no system conditions inhibiting this
operation.
“MOTOR-PULLDOWN LIMIT”
The Pulldown Demand Limit Setpoint timer is in effect and the Compressor Motor current is > the
Pulldown Demand Current Limit Setpoint value. The
slide valve operation is being inhibited as described in
“MOTOR – HIGH CURRENT LIMIT” message
below.
“MOTOR - HIGH CURRENT LIMIT”
The Compressor Motor Current is > the Local or Remote Current Limit Setpoint. The Current Limit Setpoint
is programmed over a range of 30% to 100% of the
Chiller Full Load Amps (FLA). When the motor current increases to the “inhibit load” threshold, the slide
valve is inhibited from further loading. This prevents a
further current rise. If the current continues to rise to
the “start unload” threshold, the slide valve begins unloading until the current falls to the “stop unload”
threshold. Automatic Slide Valve operation is resumed
and this message automatically clears when the motor
current decreases to the “allow load” threshold. To allow field calibration of the CM-2 Current Module,
pressing the Slide Valve Load keypad key while in SERVICE access level starts a 10 minute timer during which
the current limit thresholds are elevated to allow calibration of the CM-2 board.
Control
On rise, inhibit load
Motor Current (%FLA)
All Other
Modes
Service Mode
100
107
On fall, allow load
98
106
On rise, start unload
104
110
On fall, stop unload
102
109
An example of current limit is as follows: If a Solid
State Starter chiller FLA is 100 Amps and the Current
Limit Setpoint is 50%, the following will occur:
YORK INTERNATIONAL
52 Amps - slide valve begins unloading
51 Amps - slide valve stops unloading
49 Amps - allow automatic slide valve control
RUN MESSAGES
Slide Valve
50 Amps - inhibit slide valve load
“MAXIMUM LOAD - LOAD LIMIT”
Displayed if the special Maximum Load Limit Setpoint
is limiting the Slide Valve loading. This special setpoint
is used to prevent overloading the Oil Separator on certain compressor/chiller combinations operating at extreme conditions. After 3 minutes of compressor operation, it limits the compressor motor current to 60%
to 100% (as programmed) until the Leaving Chilled Liquid Temperature is < 50.0ºF to 70.0ºF (as programmed).
Service Technicians refer to YORK Service manual
160.81-M1.
“MINIMUM LOAD - LOAD LIMIT”
Displayed while Slide Valve unloading is being limited
by the selected control source (Slide Valve or Motor
FLA). If “Slide Valve” is selected, the minimum allowed slide valve position is 15%. If “Motor FLA” is
selected, the minimum allowed slide valve position is
that which will maintain the motor current above the
programmed value (15% to 70% FLA). Regardless of
which method is selected, if the Slide Valve position
falls below the minimum allowed position, a 1 second
load pulse is applied every 3 seconds until it meets the
minimum allowed position. The control source is selected by a Service Technician using instructions in
YORK Service manual 160.81-M1.
START INHIBIT MESSAGES
“ANTI-RECYCLE XXMin/Sec”
The chiller is inhibited from starting because the 30
minute anti-recycle time has not yet elapsed. Time remaining is displayed.
“SLIDE VALVE - POSITION > 30%”
The chiller is inhibited from starting because the slide
valve did not properly unload. This could be the result
of a defective slide valve actuator or mechanical
problem.
“MOTOR CURRENT >15% FLA”
The Control center has detected a Compressor Motor
Current of a magnitude that is >15% of the chiller Full
Load Amps for 10 continuous seconds, while the chiller
75
2
OptiView Control Center
FORM 160.81-O1 (402)
is shutdown. As long as this condition exists, the oil
pump is turned on. This is generally indicative of a failure of the motor starter, Control Center start circuits or
motor current feedback circuits. After motor current is
no longer detected, a SYSTEM LOCKOUT DELAY
is performed. The chiller can be started after motor current is no longer detected, the SYSTEM LOCKOUT
DELAY has completed and the COMPRESSOR
switch is placed in the STOP-RESET (O) position.
“LCSSS - HIGH TEMPERATURE PHASE X STOPPED”
(Mod. “B” Solid State Starter only)
The chiller is stopped and the Liquid Cooled Solid State
Starter Logic/Trigger Board has detected that the temperature of phase A, B, or C (designated as X in this
message) Silicon Controlled Rectifier (SCR) module
is > 110ºF. The starter cooling pump will run and the
chiller will be inhibited from starting until the temperature decreases to <109ºF.
technician logged in at SERVICE access level. While
this condition is in effect, the Slide Valve is inhibited
from further loading. This message automatically clears
and the Slide Valve is permitted to load when the Condenser pressure decreases to 5 PSIG below the Setpoint.
“WARNING – EVAPORATOR – LOW PRESSURE
LIMIT”
The Evaporator pressure has decreased to the Warning
threshold. This threshold is fixed in Water cooling applications. In Brine cooling applications, the threshold
is a fixed amount above the programmable safety shutdown threshold. The Safety threshold in Brine applications is determined by the Brine solution and is determined by the YORK Factory. While this condition is in
effect, the Slide Valve is inhibited from further loading. This message automatically clears and the Vanes
are permitted to open when the Evaporator pressure increases to the reset value.
Warning Threshold (PSIG)
Water
WARNING MESSAGES
“WARNING – REAL TIME CLOCK FAILURE”
During the initialization process that occurs when power
is applied to the Control Center, test data is written to a
location in the BRAM battery backed memory device
(IC location U52 on Microboard). This data is then read
from the BRAM and compared to the test data. If the
read data is not the same as that which was written to
the device, it is assumed the BRAM and Real time Clock
operation is defective and this message is displayed.
The BRAM should be replaced by a qualified Service
Technician. This message automatically clears when the
BRAM problem has been solved.
“WARNING – SETPOINT OVERRIDE”
A blank BRAM battery-backed memory device (IC location U52 on Microboard) or a failure of this device
was detected during the initialization process that occurs when power is applied to the Control Center. Due
to this failure, any or all of the programmed Setpoints
could have been corrupted. Therefore, all Setpoints have
been automatically changed to their Default values. All
Setpoints will have to be programmed to their desired
values. This message will clear when the WARNING
RESET key is pressed in OPERATOR (or higher) access mode.
“WARNING – CONDENSER – HIGH PRESSURE
LIMIT”
The Condenser Pressure exceeds the High Pressure
Warning Setpoint threshold, programmed by a Service
76
R134a
27.0
Brine
+2.0 >Safety Setpoint
Reset Threshold (PSIG)
Water
Brine
28.0
+3.0>Safety Setpoint
“WARNING – FREEZE THREAT FROM OPERATING CHILLER”
Displayed after the chiller has been shutdown for at
least the amount of time programmed as the Freeze
Warning Bypass Setpoint (programmed by a Service
technician logged in at Service access level) and the
Condenser Saturation Temperature decreases to <28ºF.
When the temperature increases to >28ºF, the warning
message clears.
“WARNING – FREEZE THREAT, CONDENSER
FLOW SWITCH OPEN”
If the Standby Chiller Freeze Protection is enabled, the
Control Center operates the Condenser Water Pump
during Freeze Threat situations, while the chiller is shutdown. This message is displayed if the Condenser Water Flow Switch does not close within 60 seconds of
condenser pump start or it opens for 2 continuous seconds after the 60 second start bypass. This message will
clear when the WARNING RESET key is pressed in
OPERATOR (or higher) access level.
“WARNING – DISCHARGE – HIGH PRESSURE
LIMIT”
The Discharge Pressure is > 185.3 PSIG while the chiller
is running. While this condition is in effect, an unload
signal is applied to the Slide Valve until the pressure is
< 175.3 PSIG, whereupon this warning message automatically clears.
YORK INTERNATIONAL
FORM 160.81-O1 (402)
“WARNING – LOW DISCHARGE SUPERHEAT
LIMIT ”
If the chiller has been running for at least 3 minutes
and the Discharge Superheat is < 5.0ºF (R134a), this
message is displayed and the slide valve is inhibited
from loading. If this condition exists continuously for
10 seconds, the Slide valve is driven with 0.5 second
unload pulses, applied every 3.5 seconds until the Discharge Superheat is > 10.0ºF (R134a), whereupon this
message is replaced with “WARNING – LOW DISCHARGE SUPERHEAT DETECTED”.
“WARNING – LOW DISCHARGE SUPERHEAT
DETECTED”
Refer to “WARNING - LOW DISCHARGE SUPERHEAT LIMIT” message above. This message will clear
when the Warning reset key is pressed in OPERATOR
(or higher) access level.
“WARNING – OIL - DIRTY FILTER”
Displayed if the oil filter differential pressure exceeds
20 PSID for 8 continuous seconds. This message automatically clears when the condition clears.
“WARNING – OIL - HIGH TEMPERATURE”
Displayed when the oil temperature rises to 165ºF. This
message automatically clears when the temperature
decreases to < 160ºF.
“WARNING – SLIDE VALVE UNCALIBRATED”
The slide valve position potentiometer calibration has
not yet been performed. This message automatically
clears when the calibration has been performed.
ROUTINE SHUTDOWN MESSAGES
“REMOTE STOP”
A shutdown command has been received from a remote
device. Remote Stop commands can be received in Digital Remote mode via I/O Board TB4-7/8 or in ISN (Integrated Systems Network) Remote mode via the
MicroGateway serial communications. If the chiller is
running when this occurs, the Pre-rotation Vanes are
driven fully closed prior to shutting down the chiller.
“LOCAL STOP”
A local shutdown command has been received by placing the Keypad Start-Run-Stop/Reset Switch in the stop
(O) position.
“PLACE COMPRESSOR SWITCH IN RUN POSITION”
The Control Center is in either Digital or ISN (Integrated Systems Network) Remote mode. The Operator
is requested to place the COMPRESSOR Switch in
YORK INTERNATIONAL
the RUN position. The Control Center will not accept
a Remote start/stop command unless the switch is in
the RUN position.
CYCLING SHUTDOWN MESSAGES
“MULTIUNIT CYCLING – CONTACTS OPEN”
The Multi-Unit Cycling contacts connected to I/O Board
TB4-9, have opened to initiate a cycling shutdown. If
the chiller is running when this occurs, the Slide Valve
is fully unloaded prior to shutting down the chiller. The
chiller will automatically restart when the contacts
close.
“SYSTEM CYCLING – CONTACTS OPEN”
The System Cycling contacts connected to I/O Board
TB4-13, have opened to initiate a cycling shutdown. If
the chiller is running when this occurs, the slide valve
is fully unloaded prior to shutting down the chiller. The
chiller will automatically restart when the contacts
close.
“CONTROL PANEL – POWER FAILURE”
A Control Power failure has occurred. If the power failure occurred while the chiller was running, it will automatically restart when power is restored. This message
can indicate a Cycling (auto-restart after power failure) or Safety (manual restart after power failure) shutdown, depending upon Control Center configuration.
It indicates a cycling shutdown when displayed in orange characters; Safety shutdown when displayed in
red characters. The Control Center is configured for
auto-restart or manual restart after power failure by a
qualified Service Technician following instructions in
YORK Service Manual 160.81-M1.
“LEAVING CHILLED LIQUID –
LOW TEMPERATURE”
The Leaving Chilled Liquid Temperature has decreased to the programmed Shutdown Temperature
Setpoint. If the chiller is running when this occurs,
the Slide Valve is fully unloaded prior to shutting down
the chiller. The chiller will automatically restart when
the temperature increases to the programmed Restart
Temperature Setpoint.
“LEAVING CHILLED LIQUID –
FLOW SWITCH OPEN”
The Chilled Liquid Flow Switch has remained open for
2 continuous seconds while the chiller was running or
failed to close during the Start Sequence Initiated period. The chiller will automatically restart when the flow
switch closes.
77
2
OptiView Control Center
FORM 160.81-O1 (402)
“CONDENSER – FLOW SWITCH OPEN”
The Condenser water flow switch has remained open
for 2 continuous seconds while the chiller was running.
This check is bypassed for the first 30 seconds of “System Run”. The chiller will automatically restart when
the flow switch closes.
“MOTOR CONTROLLER –
CONTACTS OPEN”
The CM-2 Current module (Electro-Mechanical Starter
applications) has shutdown the chiller. When detecting
a fault condition that places the starter or motor at risk,
these devices open the Motor Controller contacts “CM”
(located on the respective device and connected between
TB6-16 and TB6-53 in the Control Center) to initiate a
shutdown. Since there are several different faults that
are monitored, LEDs on the respective device illuminate to identify the specific fault that has occurred. The
chiller will automatically restart when the Motor Controller contacts close. On some shutdowns, the respective device automatically closes the contacts when the
fault condition clears. Other shutdowns require the Operator to perform a Manual Reset at the respective device.
Device
Manual Reset Fault
Automatic Reset Fault
CM-2 Module
Overload
None
“MOTOR CONTROLLER –
LOSS OF CURRENT”
The Compressor Motor current decreased to 10% Full
Load Amps (FLA) for 25 continuous seconds while the
chiller was running. This could be caused by the starter
de-energizing during run or a defect in the motor current feedback circuitry to the Control Center. The chiller
will automatically restart at the completion of “System
Lockout Delay”.
“POWER FAULT”
The CM-2 Current Module (Electro-Mechanical starter
applications) has shutdown the chiller because it detected a fault condition that places the motor at risk.
This device opens and closes the Motor controller “CM”
contacts (connected between TB6-16 and TB6-53 in
the Control Center) in < 3 seconds to initiate the shutdown and produce this message. An LED on the CM-2
Board illuminates to identify the fault. The chiller will
automatically restart when the contacts close.
“CONTROL PANEL – SCHEDULE”
The programmed Daily Schedule Setpoint has shutdown
the chiller. If this occurs while the chiller is running,
the Pre-rotation Vanes are driven fully closed prior to
shutting down the chiller. The chiller will automatically
restart at the next scheduled start time.
78
MOD “B” SOLID STATE STARTER CYCLING
SHUTDOWN MESSAGES
“LCSSS INITIALIZATION FAILED”
When AC Power is restored to the system after a power
failure, an initialization process occurs wherein the Control Center attempts to establish communications
through the serial communications link with the Liquid
Cooled Solid State Starter. If communications are not
established within 10 consecutive attempts, a Cycling
shutdown is performed and this message is displayed.
The Control Center attempts to establish communications until successful.
“LCSSS - SERIAL COMMUNICATIONS”
After communications have been successfully established in the INITIALIZATION process, the Control
Center initiates a data transmission to the Liquid Cooled
Solid State Starter on the serial communications link
every 2 seconds. After these communications have been
established, if the Control Center does not receive a
reply within 10 consecutive attempts, a Cycling shutdown is performed and this message is displayed. This
same Cycling shutdown is performed, along with the
same message, if the Liquid Cooled Solid State Starter
does not receive a response from the control center after 10 consecutive attempts to communicate with the
Control Center after INITIALIZATION has been successfully completed. The Control Center attempts to
establish communications until successful.
“LCSSS SHUTDOWN - REQUESTING FAULT
DATA...”
The Liquid Cooled State Starter Logic/Trigger Board
has shut down the chiller but the Control Center has
not yet received the cause of the fault from the LCSSS,
via the serial communications link. The LCSSS shuts
down the chiller by opening the Motor Controller
LCSSS Stop Contacts (K1 relay located on the starter
Logic/Trigger Board and connected between TB6-16
and TB6-53 in the Control Center). The Microboard,
in the Control Center then sends a request for the cause
of the fault to the Logic/Trigger Board over the serial
communications link. Since serial communications are
initiated every 2 seconds, this message is typically displayed for a few seconds and then replaced with one of
the following fault messages.
“LCSSS - STOP CONTACTS OPEN”
Refer to “LCSSS SHUTDOWN – REQUESTING
FAULT DATA ...” above. If the Control Center’s
Microboard does not receive the cause of a starter initiated shutdown with 20 seconds of the shutdown, it is
YORK INTERNATIONAL
FORM 160.81-O1 (402)
assumed it is not forthcoming and that message is replaced with this message. The chiller can be started when
the Motor Controller LCSS Stop Contacts close.
A missing interlock jumper between Starter Logic/
Trigger Board J1-1 and J1-12 will also produce this
message.
“LCSSS - POWER FAULT”
The Liquid Cooled Solid State Starter Logic/Trigger
Board has detected that the compressor motor current
in one or more phases has decreased to <10% of the
FLA for a minimum of 1 line cycle. This check is inhibited during the first 4 seconds of SYSTEM RUN
and until the motor current is >25% of the FLA. The
chiller will automatically restart upon completion of
SYSTEM LOCKOUT DELAY.
“LCSSS - LOW PHASE (X) TEMPERATURE
SENSOR”
The Liquid Cooled Solid State Starter Logic/Trigger
Board has detected that the temperature of the starter
phase A, B or C (designated as X in the message) Silicon Controlled Rectifier (SCR) Module has decreased
to <37°F. This would generally be indicative of a disconnected or defective sensor. If all three SCR Modules are indicating a temperature of <37°F, the SCR
Module cooling pump turns on. This is accomplished
by disconnecting all three sensors. This feature allows
Service Technicians to run the cooling pump while filling the cooling system by disconnecting plugs P2, P3
and P4 in the LCSSS.
“LCSSS - RUN SIGNAL”
The Liquid Cooled Solid State Starter receives two start
signals from the Control Center simultaneously; one
via the serial communications link and one via the start
relay TB6-24 in the Control Center. If they are not received within 5 seconds of one another, a cycling shutdown is performed and this message is displayed. This
is generally indicative of defective wiring.
“LCSSS - INVALID CURRENT SCALE
SELECTION”
There is an invalid compressor motor current scale
jumper combination installed in the Liquid Cooled Solid
Starter Logic/Trigger Board J1. Jumper combination
determines allowable “100% FLA” setpoint range; 7L35 to 260A, 14L-65 to 510A, 26L-125 to 850A and 33L215 to 1050A. The chiller will be permitted to start when
the jumpers are configured correctly. Refer to YORK
Starter service manual 160.00-O2 for valid jumper configurations.
“LCSSS - PHASE LOCKED LOOP”
The Liquid Cooled Solid State Starter Logic/Trigger
YORK INTERNATIONAL
Board phase locked loop circuit was not able to maintain lock with phase A of the power line. This could be
caused by a power line anomaly such as sag or jitter. A
power line frequency jitter of up to 3Hz/second can be
tolerated. The chiller will automatically restart when
lock has resumed.
“LCSSS - LOW SUPPLY LINE VOLTAGE”
The Liquid Cooled Solid State Starter Logic/Trigger
Board has detected that the compressor motor AC power
line voltage, in any phase, decreased below the low line
voltage threshold continuously for 20 seconds. The
chiller will automatically restart when the voltage in
all phases returns to the restart level. The thresholds
are as follows:
Supply Voltage Range (Volts)
Shutdown (Volts)
Restart (Volts)
Disabled
None
N/A
200-208
160
174
220-240
185
200
380
305
331
400
320
349
415
335
362
440-480
370
400
550-600
460
502
“LCSSS - HIGH SUPPLY LINE VOLTAGE”
The Liquid Cooled Solid State Starter Logic/Trigger
Board has detected that the compressor motor AC power
line voltage, in any phase, exceeded the high line
voltage threshold continuously for 20 seconds. The
chiller will automatically restart when the voltage in
all phases returns to the restart level. The thresholds
are as follows:
Supply Voltage Range (Volts)
Shutdown (Volts)
Restart (Volts)
Disabled
None
N/A
200-208
227
226
220-240
262
261
380
415
414
400
436
435
415
454
453
440-480
524
523
550-600
655
654
“LCSSS - LOGIC BOARD PROCESSOR”
Communication between the V25 Microprocessor and
Digital Signal Processor (DSP) on the Liquid Cooled
Solid State Starter Logic/Trigger Board has been interrupted. The chiller will automatically restart when communications are restored.
“LCSSS - LOGIC BOARD POWER SUPPLY”
Following application of power, this message is dis79
2
OptiView Control Center
FORM 160.81-O1 (402)
played and a snapshot of the LCSSS parameters and
time of power failure are sent to the Control Center.
“LCSSS - PHASE LOSS”
The Liquid Cooled Solid State Starter Logic/Trigger
Board has detected the line-to-line RMS voltage in any
phase has decreased to < 30% of the lowest value of
the programed voltage range. If the programmed voltage range is “Disabled”, a value of 60VAC is used as
the threshold. The chiller will automatically restart when
the line voltage is > the shutdown threshold. The voltage range is programmed by a Service technician following instructions in Service Manual 160.81-M1.
SAFETY SHUTDOWN MESSAGES
“EVAPORATOR – LOW PRESSURE”
(This message is applicable only if the Smart Freeze feature is not activated. If Smart Freeze is activated and has
initiated the shutdown, “Evaporator - Low Pressure Smart Freeze” is displayed. Its description follows).
The evaporator pressure, as sensed by the Evaporator
Transducer, has decreased to the Safety shutdown
threshold. For water cooling applications, the safety
shutdown threshold is a fixed value for the respective
refrigerant. For Brine cooling applications, the safety
shutdown threshold varies according to the concentration of the Brine solution. The Brine shutdown
threshold is programmed at the YORK Factory. It
should not be changed by anyone other than a qualified Service Technician following instructions in
YORK Service Manual 160.81-M1. The chiller can
be started after the evaporator pressure increases to
the restart threshold and the COMPRESSOR switch
is placed in the Stop-Reset (O) position.
Shutdown (PSIG)
Water cooling Brine cooling -
Restart (PSIG)
R134a
25.0
25.1
R134a
6.0 to 25.0
as programmed
+0.1 >
Shutdown threshold
“EVAPORATOR – LOW PRESSURE - SMART
FREEZE”
Smart Freeze Protection is activated and has shut down
the chiller because the evaporator temperature has been
below the Smart Freeze threshold for greater than the
allowable number of seconds. If the evaporator refrigerant temperature sensor RT7 is Enabled (using procedure
in Service Manual 160.81-M1), this parameter is used
as the evaporator refrigerant temperature and the freeze
threshold is 32.8ºF. If RT7 is not Enabled, the evaporator refrigerant temperature used is the Evaporator Satu80
ration Temperature, derived from the Evaporator Pressure Transducer and the freeze threshold is 34.0°F.
The count is incremented once for every second the
evaporator refrigerant temperature is below the freeze
threshold (but is never decremented below zero). The
number of seconds it will take the chilled liquid to freeze
is based on how far the evaporator refrigerant temperature is below the freeze threshold as follows:
Number of seconds to freezing = (4053.7) / (freeze
threshold-evaporator refrigerant temperature)
Smart Freeze is activated only if the feature has been
Enabled by a Service Technician (following instructions
in Service Manual 160.81-M1) and the Leaving Chilled
Liquid Temperature setpoint is < 38.0ºF.
“EVAPORATOR – TRANSDUCER OR LEAVING
LIQUID PROBE”
A possible defective Evaporator pressure Transducer
or Leaving Chilled Liquid temperature Thermistor has
been detected. The pressure and temperature that these
devices are indicating are not in the correct relationship to each other. The Control Center converts the
evaporator pressure to a Saturated Temperature value
and compares this value to the Leaving Chilled Liquid
temperature (difference = chilled liquid temp – evaporator saturated temp). The difference should not be outside the range of –2.5ºF to +25.0ºF. If the Transducer
and Thermistor are accurate, the Evaporator Saturated
temperature should not be > 2.5º warmer nor > 25.0ºF
colder than the leaving chilled liquid temperature. In
order to initiate a shutdown, the difference must be
outside the acceptable range continuously for 10 minutes. The chiller can be started after the COMPRESSOR switch is placed in the Stop-Reset (O) position.
This check is not performed when the optional Hot Gas
feature is enabled in brine mode.
“EVAPORATOR – TRANSDUCER OR
TEMPERATURE SENSOR”
A possible defective Evaporator pressure Transducer
or Refrigerant Temperature Sensor has been detected.
The Control Center converts the evaporator pressure to
a Saturated Temperature value and compares this value
to the optional Evaporator Refrigerant Temperature
Sensor. If the difference between these temperatures is
greater than 3.0ºF, continuously for 1 minute, this shutdown is performed.
This check is only performed under the following conditions:
• Chiller has been running for at least 10 minutes
YORK INTERNATIONAL
FORM 160.81-O1 (402)
• Evaporator Refrigerant Temperature sensor (RT7)
has been enabled by a Service technicians using
instructions in YORK Service Manual 160.81-M1
• Not in Brine cooling mode
• Smart Freeze is enabled
• Evaporator Temperature sensor (RT7) or Evaporator Saturation Temperature is indicating a temperature of < 32.0 ºF.
The chiller can be started after the temperatures are
within 3.0ºF of one another and the COMPRESSOR
switch is placed in the Stop-reset (O) position.
“CONDENSER – HIGH PRESSURE
CONTACTS OPEN”
The contacts of the electro-mechanical high pressure
safety device, located on the condenser shell, have
opened because this device has detected a pressure >
200.0 PSIG. The contacts will automatically close when
the condenser pressure decreases to < 140.0 PSIG. The
chiller can be started after the contacts close and the
COMPRESSOR switch is placed in the Stop-Reset (O)
position.
“CONDENSER – HIGH PRESSURE”
The condenser pressure, as sensed by the Condenser
Transducer, has increased to >190.0 PSIG. The chiller
can be started after the pressure decreases to < 150.0
PSIG and the COMPRESSOR switch is placed in the
Stop-reset (O) position.
“CONDENSER – PRESSURE TRANSDUCER
OUT OF RANGE”
The Condenser Pressure Transducer is indicating a pressure that is >315.0 PSIG. This is outside the normal
operating range of the transducer. This is generally indicates a defective transducer. The chiller can be started
after the transducer is indicating a pressure that is within
range and the COMPRESSOR switch is placed in the
Stop-Reset (O) position.
“AUXILIARY SAFETY – CONTACTS CLOSED”
The Auxiliary Safety shutdown contacts, connected to
I/O Board TB4-31 have closed, initiating a safety shutdown. This input is a general-purpose, user defined
safety shutdown input. The chiller can be started after
the contacts open and the COMPRESSOR switch is
placed in the Stop-Reset (O) position.
“DISCHARGE – HIGH PRESSURE”
The discharge pressure, as sensed by the Discharge Pressure Transducer, has increased to >190 PSIG. The chiller
can be started after the pressure decreases to < 189.5
PSIG and the COMPRESSOR Switch is placed in the
Stop-reset (O) position.
YORK INTERNATIONAL
“DISCHARGE – HIGH TEMPERATURE”
The discharge temperature, as sensed by the Discharge
Temperature Thermistor, has increased to > 175.0º F.
The chiller can be started after the temperature decreases
to < 175.0º F and the COMPRESSOR switch is placed
in the Stop-Reset (O) position.
“DISCHARGE – LOW TEMPERATURE”
The discharge temperature, as sensed by the Discharge
Temperature Thermistor, has decreased to < 30.0º F.
The chiller can be started after the temperature increases
to > 30.0º F and the COMPRESSOR switch is placed
in the Stop-Reset (O) position.
“OIL – HIGH TEMPERATURE”
The oil temperature, as sensed by the Oil Temperature
Thermistor, has increased to > 170.0º F. The chiller can
be started after the temperature decreases to < 170.0º F
and the Compressor switch is placed in the Stop-Reset
(O) position.
“OIL – LOW DIFFERENTIAL PRESSURE”
The differential oil pressure decreased to < 20.0 PSID
for 2 continuous seconds after the chiller has been running for >3 minutes. The differential oil pressure is the
difference between the oil pressure (as sensed at the
input to the compressor) and the evaporator pressure.
To restart the chiller, press the COMPRESSOR Switch
to STOP/RESET position, then to START position.
“OIL OR CONDENSER TRANSDUCER ERROR”
The chiller is shut down because the oil pressure was
greater than the (condenser pressure + 20 PSIG) for 10
continuous minutes after the chiller was running for 10
minutes. The condenser pressure in the formula is that
which is measured at the condenser. The oil pressure is
that which is measured at the input to the compressor.
To restart the chiller, press COMPRESSOR switch to
STOP/RESET position, then to START position.
“OIL - CLOGGED FILTER”
The chiller is shut down because the OIL FILTER
DIFFERENTIAL PRESSURE (Refer to the description of the OIL SEPARATOR screen) exceeded 25 PSID
for 8 continuous seconds. To restart the chiller, press
COMPRESSOR switch to STOP/RESET position,
then to START position.
“OIL - HIGH PRESSURE”
Chiller is shut down because the oil pressure transducer
that is sensing oil pressure at the input to the compressor, indicated 180 PSIG while the chiller was running.
The chiller will be allowed to restart when the pressure
decreases to 179 PSIG. This safety shutdown is pro81
2
OptiView Control Center
FORM 160.81-O1 (402)
vided as a verification of transducer accuracy. Display
of this message is generally indicative of a defective
transducer or interface. To restart the chiller, press
COMPRESSOR switch to STOP/RESET position,
then to START position.
“CONTROL PANEL – POWER FAILURE”
A Control Power failure has occurred. The chiller can
be started after the COMPRESSOR switch is placed
in the Stop-reset (O) position. This message can indicate a Cycling (auto-restart after power failure) or Safety
(manual restart after power failure) shutdown, depending upon Control Center configuration. It indicates a
Cycling shutdown when displayed in orange characters; Safety shutdown when displayed in red characters. The Control center is configured for auto-restart
or manual restart after power failure by a qualified Service technician following instructions in YORK Service Manual 160.81-M1.
“MOTOR OR STARTER – CURRENT
IMBALANCE”
The Motor Starter detected that the three-phase compressor motor current imbalance was > 30% continuously for 45 seconds. The imbalance is not checked until
the chiller has been running for at least 45 seconds and
the average of the three phases of motor current is >
80% of the programmed 100% chiller Full Load Amps.
The average is calculated as: Iave = (Ia+Ib+Ic) )3. The
imbalance is calculated as:
(Ia-Iave) + (Ib-Iave) + (Ic-Iave)
x 100
2(Iave)
“WATCHDOG – SOFTWARE REBOOT”
The Microboard’s software Watchdog initiated a Microprocessor reset because it detected that a portion of
the chiller operating Program was not being executed.
The result of this reset is a Safety shutdown and reinitialization of the Program. This is generally indicative of a severe electrical power disturbance or impending Microboard Failure. The chiller can be started after
the COMPRESSOR switch is placed in the Stop-Reset (O) position.
82
“MOTOR OR STARTER – INCORRECT COMPRESSOR ROTATION DETECTED”
The Discharge Pressure has either a.) decreased during
the first 2 seconds of SYSTEM RUN or b.) increased
during the first 2 seconds but didn’t further increase
over the next 3 seconds after entering SYSTEM RUN.
This is indicative of incorrect compressor rotation. If
compressor rotation is correct, the Discharge Pressure
will increase when the compressor is started. The AC
power line connections to the starter or compressor
motor should be corrected to provide correct rotation.
The chiller can be started after the COMPRESSOR
Switch is placed in the Stop-Reset (O) position.
“MOTOR – HIGH MOTOR WINDING TEMPERATURE”
The Motor Thermal Protection device (MTP) contacts
connected to I/O Board TB3-70 have opened due to a
high motor temperature condition. The chiller can be
started after the contacts have closed and the COMPRESSOR Switch is placed in the Stop-Reset (O) position.
MOD “B” SOLID STATE STARTER
SAFETY SHUTDOWN MESSAGES
“LCSSS SHUTDOWN - REQUESTING FAULT
DATA...”
The Liquid Cooled Solid State Starter Logic/Trigger
Board has shut down the chiller but the Control Center
has not yet received the cause of the fault from the
LCSSS, via the serial communications link. The LCSSS
shuts down the chiller by opening the Motor Controller
LCSSS Stop Contacts (K1 relay located on the Logic/
Trigger Board and connected between TB6-16 and TB653 in the Control Center). The Microboard, in the Control Center, then sends a request for the cause of the
fault to the Logic/Trigger Board over the serial communications link. Since serial communications are initiated every 2 seconds, this message is typically displayed for a few seconds and then replaced with one of
the following fault messages.
“LCSSS - HIGH INSTANTANEOUS CURRENT”
The Liquid Cooled Solid State Starter Logic/Trigger
Board detected that the compressor motor current in
YORK INTERNATIONAL
FORM 160.81-O1 (402)
any phase exceeded 1.1(1.414 x RMS value of the programmed Start Current) for a minimum of 1 second.
The chiller can be started after the COMPRESSOR
switch is placed in the Stop-Reset (O) position.
“LCSSS - HIGH PHASE (X) HEATSINK TEMPERATURE - RUNNING”
The Liquid Cooled Solid State Starter Logic/Trigger
Board has detected the temperature of phase A, B or C
(designed as X in the message) Silicon Controlled Rectifier (SCR) Modules has exceeded 212°F while the
chiller was running. The safety can be reset after all SCR
temperatures are < 210°F and the COMPRESSOR switch
is placed in the Stop-Reset position (O). However, the
chiller cannot be started until all SCR temperatures are
< 109°F. During the shutdown, the starter cooling pump
runs until the temperature is < 109°F.
“LCSSS - 105% MOTOR CURRENT OVERLOAD”
The highest phase of the compressor motor current increased to > 105% of the programmed 100% chiller
Full Load Amps continuously for 40 seconds. The
chiller can be started after the COMPRESSOR switch
is placed in the Stop-Reset (O) position.
“LCSSS - PHASE (X) SHORTED SCR”
A shorted Silicon Controlled Rectifier (SCR) in phase
A, B or C (designated as X in the message) has been
YORK INTERNATIONAL
detected by the Liquid Cooled Solid State Starter Logic/
Trigger Board. The voltage across each SCR in monitored to detect the shorted condition. The shorted condition must exist continuously for 5 seconds in order to
annunciate the fault. This check is disabled while the
chiller is running. The chiller can be started after the
condition has been corrected and the COMPRESSOR
switch is placed in the Stop-Reset (O) position.
“LCSSS - OPEN SCR”
An open Silicon Controlled Rectifier (SCR) has been
detected by the Liquid Cooled Solid State Starter Logic/
Trigger Board. The open condition must exist continuously for 5 seconds in order to annunciate the fault.
The chiller can be started after the condition has been
corrected and the COMPRESSOR switch is placed in
the Stop-Reset (O) position. This check is disabled when
the chiller is shut down. In certain applications, local
power line conditions could interfere with the open SCR
detection technique. This requires a qualified Service
Technician to disable this check. Refer to YORK Service Manual 160.81-M1.
“LCSSS - PHASE ROTATION”
The Liquid Cooled Solid State Starter Logic/Trigger
Board has detected the three phase compressor motor
power line voltage phase rotation is not correct. The
chiller can be started after the phase rotation is correct
and the COMPRESSOR Switch is placed in the StopReset (O) position.
83
2
Printers
FORM 160.81-O1 (402)
SECTION 3
PRINTERS
23887A
OKIDATA MICROLINE 184
WEIGH-TRONIX
23889A
00085VIP
SEIKO DPU-414
FIG. 34 – PRINTERS
84
YORK INTERNATIONAL
FORM 160.81-O1 (402)
PRINTERS
A printer can be connected to the Control Center’s
Microboard to print the following reports. The screen
from which each report can be generated is listed in
parenthesis.
• Status - Present system parameters (Printer, Home)
• Setpoints - Present programmed values of all setpoints (Printer, Setpoints)
• Schedule - Present value of programmed daily
schedule (Printer, Schedule)
• Sales Order - Information on Sales Order Screen
(Printer, Sales Order)
• History - System parameters at the time of the last
normal stop, last fault while running and last 10
faults, whether running or not (Printer, History)
• Cycling or Safety shutdown initiated Print Snapshot of all system parameters at instant of shutdown. Automatically occurs if printer is connected
at time of shutdown.
• Trend - Prints a snapshot of the existing trend
screen data or prints new data collected after the
trend print key is pressed.
• Security Log Report - Prints all of the setpoint
changes listed in the Setpoint Change Log on the
Security Log Screen. Also, an individual setpoint
change can be printed from the Security Log Details Screen.
• Custom Screen - Prints the information listed on
the custom Screen.
The printer can be permanently connected to the Control Center or connected as required to produce a report. If permanently connected, a DATA LOGGING
feature can produce a Status report automatically, beginning at an Operator selected start time and occurring at an Operator selected interval thereafter.
The following figures are examples of the different print
reports. Solid State Starter application print reports
shown. Electro-Mechanical starter and Variable Speed
Drive reports are similar but print parameters applicable
to those devices.
• Figure 35 - Status
• Figure 36 - Setpoints
• Figure 37 - Schedule
• Figure 38 - Sales Order
• Figure 39 - History
YORK INTERNATIONAL
• Figure 40 - Security Log (Flash Memory Card version C.MLM.05.02.xxx and later)
• Figure 41 - Trend
• Figure 42 - Custom Screen
PRINTERS
The following Printers can be used. Printers must be
equipped with an RS-232 Serial interface.
• Okidata –
Models: 182,182 turbo, 184 turbo
Dimensions: 14 in. wide x 10.5 in. deep
Paper: 8.5 in. wide
Type: Dot matrix impact
Purchase: 800-OKIDATA
• Weigh-Tronix –
Models: 2600, 1220
Dimensions: 2.3 in. wide x 2.8 in. deep
Paper: 2.25 in. wide
Type: Dot matrix impact
Purchase: USA 800-982-6622
International 707-527-5555
• Seiko –
Printer Model: DPU414-30B
Power Supply (120Vac/60Hz): PW-4007-U1
Thermal Paper: SS112-025B
Dimensions: 6.3 in. wide x 6.7 in. deep
Paper: 4.4 in. wide
Type: Thermal
Purchase: REPTRON ELECTRONICS, INC
Phone: 800-800-5441 ext. 4686
Fax. 813-891-4056
Attn: Nancy Arthur, Account Manager
(narthur@reptron.com)
The Control Center provides the required formatting
control codes for the printers above when the printer is
selected on the PRINTER Screen in the instructions
below. These codes are transmitted through the serial
interface to the printer to provide a proper print format.
Different printers require different formatting control
codes. Other printers might provide proper operation
85
3
Printers
FORM 160.81-O1 (402)
when connected to the Control Center. However, the
print format may not be correct or as desired. Proceed
with caution and use the following guidelines if an unlisted printer is selected:
1. All must be capable of RS-232 Serial communications.
2. Primary differences between printers involve the formatting control codes required by the printer. These
codes are sent from the Control Center to the printer.
For example, Weigh-Tronix printers require a control code to select 40 column width. This same code
is interpreted by the Okidata printer as an instruction to print wide characters. In some instances, a
printer will ignore a code it cannot interpret.
3. The Control Center requires a busy signal from the
printer when the printer receive buffer is full. This
causes the Control Center to momentarily terminate
data transmission until the printer can accept more
data. The busy signal polarity must be asserted low
when busy.
PRINTER CONNECTIONS
Connect the printers to the Control Center Microboard
as follows. Only one printer can be connected at a time.
• OKIDATA 182, 182 turbo, 184 turbo
Microboard
J2-4
J2-2
J2-9
Cabinet
Printer
pin 3
pin 11
pin 7
Function
Tx (data to printer)
DSR (busy signal from printer)
Gnd
shield
• WEIGH-TRONIX
Microboard
J2-4
J2-2
J2-9
Cabinet
Printer
pin 2
pin 5
pin 7
Function
Tx (data to printer)
DSR (busy signal from printer)
Gnd
shield
Printer
pin 3
pin 8
pin 5
Function
Tx (data to printer)
DSR (busy signal from printer)
Gnd
shield
• SEIKO
Microboard
J2-4
J2-2
J2-9
Cabinet
86
Hardware required:
Cable – #18 AWG stranded 50ft. maximum length.
Connectors –
- Microboard: None. Strip 1/4" insulation from
wire and insert into screw terminal block.
- Printers: Okidata - 25 pin plug DB-25P or equivalent; Shell DB-C2-J9 or equivalent. Weigh-Tronix Same as Okidata. Cable assembly available from
Weigh-Tronix. Seiko - 9-Pin D-type Subminiature
(DB-9 pin male).
PRINTER SETUP
The selected printer must be configured as follows.
Refer to manual provided by Printer manufacturer with
respective Printer.
• OKIDATA 182, 182 turbo, 184 turbo Printer
CONTROL BOARD Switch settings:
SW1 - on Unslashed 0
2 - off Unslashed 0
3 - off Unslashed 0
4 - off Form Length 11 in.
5 - on Form Length 11 in.
6 - off Auto Line Feed off
7 - on 8 bit data
8 - off Enable front panel
If equipped with a SUPER SPEED serial Board:
SW1-1 - on Odd or even parity
1-2 - on No parity
1-3 - on 8 bit data
1-4 - on Protocol ready/busy
1-5 - on Test select
1-6 - on Print mode
1-7 - off SDD(-) pin 11
1-8 - on SDD(-) pin 11
2-1 - on 1200 Baud*
2-2 - on 1200 Baud*
2-3 - off 1200 Baud*
2-4 - off DSR active
2-5 - on Buffer threshold 32 bytes
2-6 - on Busy signal 200ms
2-7 - on DTR space after power on
2-8 - not used
YORK INTERNATIONAL
FORM 160.81-O1 (402)
If equipped with HIGH SPEED serial board:
SW1 - off (-) Low when busy
2 - off 1200 Baud*
3 - off 1200 Baud*
4 - on 1200 Baud*
5 - not used
6 - off no parity
7 - off Pin 20 & pin 11 act as busy line
• WEIGH-TRONIX Printer
- IMP-24 Model 2600
SW1 - off 1200 Baud*
2 - on 1200 Baud*
Model 1220
- Configure Menu
Baud= 1200
Data Bits = 8
Stop Bits = 1
Hshake = Busy-Line
Cols = 32
Invert = No
Font = 5 x 8
Mag = None
- Custom Menu
Auto Seq = No
Zero = 0
Pound sign = #
_(Underscore)
Busy invert = no
Online/offline = yes
Ext Ch Set = no
Print ready = yes
Set Clock = not used
Reset Seq = not used
• SEIKO
DipSW1-1 = off
1-2 = on
1-3 = on
1-4 = off
1-5 = on
1-6 = off
1-7 = on
1-8 = on
Input-Serial
Printing speed high
Auto loading - on
Auto LF - off
Setting Command - Enable
Printing density - 100%
Printing density - 100%
Printing, density - 100%
DipSW 2-1= on
2-2 = on
2-3 = on
Printing Columns - 40
User Font Back-up - on
Character Select - normal
YORK INTERNATIONAL
2-4 = off
2-5 = on
2-6 = on
2-7 = on
2-8 = off
DipSW 3-1= on
3-2 = on
3-3 = on
3-4 = on
3-5 = on
3-6 = off
3-7 = on
3-8 = off
Zero - slash
International character set American
International character set American
International character set American
International character set American
Data length - 8 bits
Parity Setting - no
Parity condition - odd
Busy control - H/W busy
Baud rate select - 1200*
Baud rate select - 1200*
Baud rate select - 1200*
Baud rate select - 1200*
* Settings shown for 1200 Baud. Other Baud rates can
be selected. Refer to Printer manufacturer’s manual
supplied with Printer.
CONTROL CENTER SETUP
Chiller ID
Access Level Required: OPERATOR
Using the COMMS Screen, assign an Identification
number to the chiller. This number will appear at the
top of each report.
Printer Setup
Access Level Required: OPERATOR
Using the COMMS Screen, the Control Center must be
configured to transmit data in the same format as the
Printer is configured to receive the data. The following
values must be entered.
• Baud Rate - Set as desired. Value selected must be
the same as Printer configuration above.
• Data Bits - 8
• Parity - None
• Stop Bits - 1
Printer Type
Access Level required: OPERATOR
Using the PRINTER Screen, the actual Printer type
connected to the Control Center must be entered. Selection determines the control codes that are sent to the
Printer. These codes determine such things as lines per
inch, character width and general formatting. Available
selections are: Okidata, Weigh-Tronix and Seiko.
87
3
Printers
FORM 160.81-O1 (402)
Automatic Data Logging
Access Level required: OPERATOR
If automatic data logging is desired, a Status Report
can be automatically printed at a specified interval beginning at a specified time, using the PRINTER Screen.
The interval is programmable over the range of 1 minute
to 1440 minutes in 1 minute increments. The first print
will occur at the programmed START time and occur
at the programmed OUTPUT INTERVAL thereafter.
The time remaining until the next print is displayed on
the PRINTER Screen.
• Automatic Printer Logging - Enables and disables
automatic data logging
• Log Start Time - Enter the time the first print is
desired.
• Output Interval - Enter the desired interval between
prints.
88
YORK INTERNATIONAL
FORM 160.81-O1 (402)
YORK UPDATE
CHILLER ID 0
(c) 1997 – 2001 YORK INTERNATIONAL CORPORATION
Mon 21 Jun 1999 1:26:51 PM
Oil Sump
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Oil Pressure
= 120.7 Psig
Differential Oil Pressure
= 41.6 Psid
Differential Filter Pressure
= 13.1 Psid
Oil Supply Solenoid
= On
SYSTEM RUN
LEAVING CHILLED LIQUID CONTROL
[List all warnings presently active]
Controls C.MLM.05.02.102
Run Time
0 Days
2 Hr
Operating Hours
Number Of Starts
Control Source
[Skip the following section if Hot Gas Bypass is not
enabled] Hot Gas
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Hot Gas Solenoid On = False
59 Min
= 298 Hr
= 106
= Local
Evaporator
–––––––––––––––––––––––––––––––––––––––––––––––––––––––
Leaving Chilled Active Setpoint
= 45.0°F
Chilled Liquid Pump
= Run
Chilled Liquid Flow Switch
= Closed
Leaving Chilled Liquid Temperature
= 50.0°F
Return Chilled Liquid Temperature
= 59.3°F
Evaporator Pressure
= 78.2 Psig
Evaporator Saturation Temperature
= 41.1°F
Evaporator Refrigerant Temperature
= 40.0°F
[If Refrigerant Sensor enabled]
Small Temperature Difference
= 10.0 ~F
[Skip the following section if Level Control is not
enabled] Refrigerant Level Control
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Refrigerant Level Target
= 80 %
Refrigerant Level Position
= 35 %
Ramp Up Time Remaining
= 15 Sec
[If Ramp Up in effect]
[Skip the following section if Motor Type is not EM]
Electro-Mechanical Starter
–––––––––––––––––––––––––––––––––––––––––––––––––––––––
Motor Run = On % Full Load Amps
= 94 %
[Skip the following section if Motor Type is not Mod A
SSS] Liquid-Cooled Solid State Starter
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Condenser
–––––––––––––––––––––––––––––––––––––––––––––––––––––––
Condenser Liquid Pump
= Run
Condenser Liquid Flow Switch
= Closed
Leaving Condenser Liquid Temperature
= 85.0°F
Return Condenser Liquid Temperature
= 94.9°F
Condenser Pressure
= 135.8 Psig
Condenser Saturation Temperature
= 71.7°F
Small Temperature Difference
= -13.3°F
Drop Leg Refrigerant Temperature
= 85.0°F
[If Drop Leg Sensor enabled]
Sub Cooling Temperature
= 2.0°F
[If Drop Leg Sensor enabled]
Compressor
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Discharge Temperature
= 121.6°F
Discharge Pressure
= 135.7 Psig
Discharge Superheat
= 1.0°F
Slide Valve Position = 28 %
Liquid Injector = Open
Motor Run
% Full Load Amps
% Phase A Voltage
Phase B Voltage
Phase C Voltage
Phase A Current
Phase B Current
Phase C Current
=
=
=
=
=
=
=
=
On
94
447
409
442
193
204
190
V
V
V
A
A
A
[Skip the following section if Motor Type is not Mod B
SSS]
Liquid-Cooled Solid State Starter
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Motor Run
= On
% Full Load Amps
= 94
% Starter Model
= 33L
KW Hours
= 20723 KWH
Input Power
= 145 KW
Phase A Voltage
= 447 V
Phase B Voltage
= 409 V
Phase C Voltage
= 442 V
Phase A Current
= 193 A
Phase B Current
= 204 A
Phase C Current
= 190 A
Phase A Temperature
= 88 ~F
Phase B Temperature
= 89 ~F
Phase C Temperature
= 75 ~F
FIG. 35 – SAMPLE PRINTOUT (STATUS)
YORK INTERNATIONAL
89
3
FORM 160.81-O1 (402)
YORK SETPOINTS
CHILLER ID 0
(c) 1997 – 2001 YORK INTERNATIONAL CORPORATION
Mon 21 Jun 1999 1:27:39 PM
Software Versions
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Controls = C.MLM.05.02.102
BIOS = C.MLM.00.03
Kernel = 0.18 GUI = 0.32
SIO = 0.22
GPIC = 0.05
SSS [Skip if Motor Type is not Serial SSS] =
C.SSS.01.01
System Information
––––––––––––––––––––––––––––––––––––––––––––––––––––––
System Language
Data Display Mode
Control Source
Remote Analog Input Range
Clock
=
=
=
=
=
English
English
Local
0 – 10 Volts
Enabled
Jumper Settings
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Chilled Liquid Pump Operation
= Standard
Anti-Recycle
= Enabled
Power Failure Restart
= Auto
Liquid Type
= Water
Motor Type
= EM
Printer Setup
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Automatic Printer Logging
= Disabled
Log Start Time
= 12:00 am
Output Interval
= 60 Min
Printer Type
= Okidata
Baud
= 9600 Baud
Data Bits
= 8 Bits
Parity
= None
Stop Bits
= 1 Bit
COM 2 Setup
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Baud
= 19200 Baud
Data Bits
= 8 Bits
Parity
= Odd
Stop Bits
= 1 Bit
Evaporator
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Leaving Chilled Local Setpoint
= 45.0 ~F
Leaving Chilled ISN Setpoint
= 45.0 ~F
Leaving Chilled Modem Setpoint
= 45.0 ~F
Leaving Chilled Analog Setpoint
= 45.0 ~F
Leaving Chilled Digital Setpoint
= 45.0 ~F
Period
= 10 Sec
Error
= 1.5 ~F
Rate
= 2.5 ~F/S
Max Load Pulse
= 1.5 Sec
Max Unload Pulse
Remote Range
Restart Offset
Restart Setpoint
Shutdown Offset
Shutdown Setpoint
Brine Low Evaporator Cutout
Smart Freeze
Ice Storage
Offset
Refrigerant
=
=
=
=
=
=
=
=
=
=
=
1.5 Sec
10.0 ~F
0.0 ~F
45.0 ~F
4.0 ~F
41.0 ~F
25.0 Psig
Off
Off
0
Enabled
Condenser
––––––––––––––––––––––––––––––––––––––––––––––––––––––
High Pressure Warning Threshold
= 44.9 Psig
Drop Leg
= Enabled Freeze
Warning
= Disabled
Freeze Time
= 30 Min
[Skip the following section if Hot Gas Bypass is not
enabled]
Hot Gas
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Hot Gas
= Disabled Off
Setpoint
= 2.0 ~F
On Setpoint
= 1.0 ~F
Oil Sump
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Auto Zero
= Enable
Compressor
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Maximum Load Temperature
= 70.0 ~F
Maximum Load FLA
= 60 %
Minimum Load Control Source
= Slide Valve
Motor FLA Limit
= 15 %
Liquid Injection Threshold
= 130.0 ~F
[Skip the following section if Liquid Level is not
enabled] Refrigerant Level Control
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Level Control
= Enabled
Setpoint
= 50 %
Period
= 3.5 Sec
Proportion Limit Open
= 15 %
Proportion Limit Close
= 45 %
Rate Limit Open
= 10 %
Rate Limit Close
= 10 %
Valve Preset Time
= 45 Sec
[Skip the following section if Motor Type is not EM]
Electro-Mechanical Starter
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Local Motor Current Limit
= 100 %
Remote ISN Current Limit
= 100 %
Remote Analog Current Limit
= 100 %
Remote Digital Current Limit
= 100 %
Remote Modem Current Limit
= 100 %
Pulldown Demand Limit
= 100 %
– continued on page 91
FIG. 36 – SAMPLE PRINTOUT (SETPOINT REPORT)
90
YORK INTERNATIONAL
FORM 160.81-O1 (402)
Pulldown Demand Time
= 0 Min
[Skip the following section if Motor Type is not Mod A
SSS] Liquid-Cooled Solid State Starter
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Local Motor Current Limit
Remote ISN Current Limit
Remote Analog Current Limit
Remote Digital Current Limit
Remote Modem Current Limit
Pulldown Demand Limit
Pulldown Demand Time
Scale/Model
Supply Voltage Range
Full Load Amps
Current Imbalance Check
=
=
=
=
=
=
=
=
=
=
=
100 %
100 %
100 %
100 %
100 %
100 %
0 Min
600 V, 281 A
Disabled
150 A
Disabled
[Skip the following section if Motor Type is not Mod B
SSS]
Liquid-Cooled Solid State Starter
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Local Motor Current Limit
= 100 %
Remote ISN Current Limit
= 100 %
Remote Analog Current Limit
= 100 %
Remote Digital Current Limit
= 100 %
Remote Modem Current Limit
= 100 %
Pulldown Demand Limit
= 100 %
Pulldown Demand Time
= 0 Min
Starter Model
= 33L
Voltage Range
= Disabled
Full Load Amps
= 215 A
Starting Current
= 1460 A
Open SCR
= Disabled
FIG. 36 – CONTINUED
YORK INTERNATIONAL
91
Printers
FORM 160.81-O1 (402)
YORK SCHEDULE
CHILLER ID
3
© 1997 - 1999 YORK INTERNATIONAL CORPORATION
MON 29 MAR 1999
1 27 PM
SCHEDULE = OFF
STANDARD SCHEDULE
––––––––––––––––––––––––––––––––––––––––––––––––––––––
SUN
START
=
OFF
STOP
=
OFF
MON
START
=
06:00 AM
STOP
=
05:00 PM
TUE
START
=
06:00 AM
STOP
=
05:00 PM
WED
START
=
06:00 AM
STOP
=
05:00 PM
THU
START
=
06:00 AM
STOP
=
05:00 PM
FRI
START
=
06:00 AM
STOP
=
05:00 PM
SAT
START
=
OFF
STOP
=
OFF
EXCEPTION DAYS
––––––––––––––––––––––––––––––––––––––––––––––––––––––
15 JUL 1999 START
= OFF
STOP
=
OFF
16 JUL 1999 START
= 08:00 AM
STOP
=
10:00 PM
FIG. 37 – SAMPLE PRINTOUT (SCHEDULE)
92
YORK INTERNATIONAL
FORM 160.81-O1 (402)
YORK SALES ORDER
CHILLER ID
3
NAMEPLATE INFORMATION
––––––––––––––––––––––––––––––––––––––––––––––––––––––
© 1997 - 1999 YORK INTERNATIONAL CORPORATION
MOTOR CODE
CV
POWER (VOLTS)
460
PHASES
3
MON 29 MAR 1999 1 28 PM
ORDER INFORMATION
––––––––––––––––––––––––––––––––––––––––––––––––––––––
COMMISSIONING DATE
01 OCT 1999
JOB NAME
JOB LOCATION
MODEL NUMBER
YSFBFAS3-CVE
YORK ORDER NUMBER
99102014-01
PANEL SERIAL NUMBER
12345678
CHILLER SERIAL NUMBER
12345678
DESIGN LOAD - EVAPORATOR
––––––––––––––––––––––––––––––––––––––––––––––––––––––
PASSES
2
DESIGN WORKING PRESSURE
150
FOULING FACTOR
0.00010
PRESSURE DROP
21.1
NOZZLE ARRANGEMENT IN
2
NOZZLE ARRANGEMENT OUT
3
LEAVING TEMPERATURE
44.0
RETURN TEMPERATURE
56.0
GPM
1500.0
TUBES
181
FREQUENCY (HZ)
60
LOCKED ROTOR AMPS
4400
FULL LOAD AMPS
642
INRUSH AMPS
655
SYSTEM INFORMATION
––––––––––––––––––––––––––––––––––––––––––––––––––––––
REFRIGERANT
R134A
TONS
150
GEAR CODE
RK
LIQUID TYPE
WATER
3
BRINE PERCENT
KILOWATTS INPUT
467
VSD / SSS / EM
SSS
DESIGN LOAD - CONDENSER
––––––––––––––––––––––––––––––––––––––––––––––––––––––
PASSES
2
DESIGN WORKING PRESSURE
150
FOULING FACTOR
0.00025
PRESSURE DROP
28.0
NOZZLE ARRANGEMENT IN
1
NOZZLE ARRANGEMENT OUT
LEAVING TEMPERATURE
94.3
RETURN TEMPERATURE
85.0
GPM
2250.0
TUBES
230
FIG. 38 – SAMPLE PRINTOUT (SALES ORDER)
YORK INTERNATIONAL
93
Printers
FORM 160.81-O1 (402)
YORK HISTORY 1
CHILLER ID 0
(c) 1997 – 2001 YORK INTERNATIONAL CORPORATION
Mon 21 Jun 1999 1:26:51 PM
SYSTEM READY TO START
LCSSS – LOGIC BOARD POWER SUPPLY
[List any warnings that were active at the time of
shutdown]
Controls C.MLM.05.02.102
Run Time
0 Days
2 Hr
Operating Hours
Number Of Starts
Control Source
59 Min
= 298 Hr
= 106
= Local
Evaporator
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Leaving Chilled Active Setpoint
= 45.0 ~F
Chilled Liquid Pump
= Run
Chilled Liquid Flow Switch
= Closed
Leaving Chilled Liquid Temperature
= 50.0 ~F
Return Chilled Liquid Temperature
= 59.3 ~F
Evaporator Pressure
= 78.2 Psig
Evaporator Saturation Temperature
= 41.1 ~F
Evaporator Refrigerant Temperature
= 40.0 ~F
[If Refrigerant Sensor enabled]
Small Temperature Difference
= 10.0 ~F
Condenser
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Condenser Liquid Pump
= Run
Condenser Liquid Flow Switch
= Closed
Leaving Condenser Liquid Temperature
= 85.0 ~F
Return Condenser Liquid Temperature
= 94.9 ~F
Condenser Pressure
= 135.8 Psig
Condenser Saturation Temperature
= 71.7 ~F
Small Temperature Difference
= -13.3 ~F
Drop Leg Refrigerant Temperature
= 85.0 ~F
[If Drop Leg Sensor enabled]
Sub Cooling Temperature
= 2.0 ~F
[If Drop Leg Sensor enabled]
Compressor
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Discharge Temperature
= 121.6 ~F
Discharge Pressure
= 135.7 Psig
Discharge Superheat
= 1.0 ~F
Slide Valve Position
= 28 %
Liquid Injector
= Open
[Skip the following section if Hot Gas Bypass is not
enabled]
Hot Gas
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Hot Gas Solenoid
= Off
Oil Sump
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Oil Pressure
= 120.7 Psig
Differential Oil Pressure
= 41.6 Psid
Differential Filter Pressure
= 13.1 Psid
Oil Supply Solenoid
= On
[Skip the following section if Level Control is not
enabled]
Refrigerant Level Control
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Refrigerant Level Target
= 80 %
Refrigerant Level Position
= 35 %
Ramp Up Time Remaining
= 15 Sec
[If Ramp Up in effect]
[Skip the following section if Motor Type is not EM]
Electro-Mechanical Starter
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Motor Run
= On
% Full Load Amps
= 94 %
[Skip the following section if Motor Type is not Mod A
SSS]
Liquid-Cooled Solid State Starter
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Motor Run
= On
% Full Load Amps
= 94
% Phase A Voltage
= 447 V
Phase B Voltage
= 409 V
Phase C Voltage
= 442 V
Phase A Current
= 193 A
Phase B Current
= 204 A
Phase C Current
= 190 A
[Skip the following section if Motor Type is not Mod B
SSS]
Liquid-Cooled Solid State Starter
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Motor Run
= On
% Full Load Amps
= 94 %
Starter Model
= 33L
KW Hours
= 20723 KWH
Input Power
= 145 KW
Phase A Voltage
= 447 V
Phase B Voltage
= 409 V
Phase C Voltage
= 442 V
Phase A Current
= 193 A
Phase B Current
= 204 A
Phase C Current
= 190 A
Phase A Temperature
= 88 ~F
Phase B Temperature
= 89 ~F
Phase C Temperature
= 75 ~F
FIG. 39 – SAMPLE PRINTOUT (HISTORY)
94
YORK INTERNATIONAL
FORM 160.81-O1 (402)
YORK SETPOINT CHANGE LOG
CHILLER ID 0
(c) 1997 – 2001 YORK INTERNATIONAL CORPORATION
Fri 05 Oct 2001 4:48:04 PM
Log Entry 1 Evaporator - Leaving Chilled Local Setpoint
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Date
= 05 Oct 2001
Time
= 4:23:49 PM
Access Level
= Service
User Id
= 4268
Old Value
= 46.5 ~F
New Value
= 48.0 ~F
Log Entry 2 Condenser - High Pressure Warning Threshold
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Date
= 05 Oct 2001
Time
= 1:36:12 PM
Access Level
= Service
User Id
= 4268
Old Value
= 162.5 Psig
New Value
= 225.0 Psig
3
Log Entry 3 Condenser - Drop Leg
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Date
= 05 Oct 2001
Time
= 1:36:02 PM
Access Level
= Service
User Id
= 4268
Old Value
= Disabled
New Value
= Enabled
Log Entry 4 Evaporator - Refrigerant
––––––––––––––––––––––––––––––––––––––––––––––––––––––
Date
= 05 Oct 2001
Time
= 1:35:48 PM
Access Level
= Service
User Id
= 4268
Old Value
= Disabled
New Value
= Enabled
FIG. 40 – SAMPLE PRINTOUT (SECURITY LOG REPORT)
YORK INTERNATIONAL
95
Printers
FORM 160.81-O1 (402)
YORK TREND
CHILLER ID 163
© 1997 – 2000 YORK INTERNATIONAL CORPORATION
MON 09 OCT 2000 3:33:47 PM
DATA 1: LEAVING CHILLED LIQUID TEMPERATURE
DATA 2: RETURN CHILLED LIQUID TEMPERATURE
DATA 3: EVAPORATOR PRESSURE
DATA 4: LEAVING CONDENSER LIQUID TEMPERATURE
DATA 5: RETURN CONDENSER LIQUID TEMPERATURE
DATA 6: CONDENSER PRESSURE
TIME
DATA 1
DATA 2
DATA 3
DATA 4 DATA 5
DATA 6
3:33:47PM 45.5°F
55.0°F 39.0 PSIG 95.0°F 85.0°F 120.0 PSIG
3:33:48PM 45.5°F
55.0°F 39.0 PSIG 95.0°F 85.0°F 120.0 PSIG
3:33:49PM 45.5°F
55.0°F 39.0 PSIG 95.0°F 85.0°F 120.0 PSIG
3:33:50PM 45.5°F
55.0°F 39.0 PSIG 95.0°F 85.3°F 120.1 PSIG
3:33:51PM 45.5°F
55.2°F 39.1 PSIG 95.1°F 85.4°F 120.2 PSIG
FIG. 41 – SAMPLE PRINTOUT (TREND DATA NEW OR EXISTING POINTS)
YORK CUSTOM VIEW
CHILLER ID 0
(c) 1997 – 2001 YORK INTERNATIONAL CORPORATION
Mon 21 Jun 1999 1:28:25 PM
Leaving Chilled Liquid Temperature
Return Chilled Liquid Temperature
Leaving Condenser Liquid Temperature
Return Condenser Liquid Temperature
Evaporator Saturation Temperature
Condenser Saturation Temperature
Evaporator Pressure
Condenser Pressure
Oil Pressure
% Full Load Amps
=
=
=
=
=
=
=
=
=
=
45.0°F
55.0°F
95.0°F
85.0°F
41.0°F
78.5°F
70.0 Psig
140.0 Psig
45.0 Psid
50 %
FIG. 42 – SAMPLE PRINTOUT (CUSTOM SCREEN REPORT)
96
YORK INTERNATIONAL
FORM 160.81-O1 (402)
SI METRIC CONVERSION
The following factors can be used to convert from English to the most common Sl Metric values.
MEASUREMENT
CAPACITY
POWER
FLOW RATE
LENGTH
WEIGHT
VELOCITY
PRESSURE DROP
MULTIPLY THIS
ENGLISH VALUE
BY
TO OBTAIN THIS
METRIC VALUE
TONS REFRIGERANT EFFECT (ton)
KILOWATTS (kW)
HORSEPOWER (hp)
GALLONS / MINUTE (gpm)
FEET (ft)
INCHES (in)
POUNDS (lb)
FEET / SECOND (fps)
FEET OF WATER (ft)
POUNDS / SQ. INCH (psi)
3.516
NO CHANGE
0.7457
0.0631
304.8
25.4
0.4536
0.3048
2.989
6.895
KILOWATTS (kW)
KILOWATTS (kW)
KILOWATTS (kW)
LITERS / SECOND (L/s)
MILLIMETERS (mm)
MILLIMETERS (mm)
KILOGRAMS (kg)
METERS / SECOND (m/s)
KILOPASCALS (k Pa)
KILOPASCALS (k Pa)
3
TEMPERATURE:
To convert degrees Fahrenheit (°F) to degrees Celsius
(°C) subtract 32° and multiply by 5/9 or 0.5556.
To convert a temperature range (i.e., 10°F or 12°F
chilled water range) from Fahrenheit to Celsius, multiply by 5/9 or 0.5556.
YORK INTERNATIONAL
97
FORM 160.81-O1 (402)
98
YORK INTERNATIONAL
FORM 160.81-O1 (402)
YORK INTERNATIONAL
99
P.O. Box 1592, York, Pennsylvania USA 17405-1592
Copyright © by York International Corporation 2002
Form 160.81-O1 (402)
Supersedes: Form 160.81-O1 (501)
Tele. 800-861-1001
www.york.com
Subject to change without notice. Printed in USA
ALL RIGHTS RESERVED