York YR User Manual
FORM 160.81-EG1 (502)
Model YR
Twin-Screw Compressor Liquid Chillers
Design Level A
Rated in Accordance
with the latest edition of ARI
ST ANDARD 550/590
200 through 430 tons (60 Hz)
700 through 1500 kW (50 Hz)
170 through 365 tons (50 Hz)
600 through 1280 kW (50 Hz)
Utilizing HFC-134a
00562VIP
ASHRAE
90.1
COMPLIANT
m
Metric Conversions
Table of Contents
PAGE
INTRODUCTION.......................................................... 3
FORM 160.81-EG1
LIST OF TABLES
RATINGS ..................................................................... 4
OPTIVIEW CONTROL CENTER ................................. 5
MECHANICAL SPECIFICATIONS............................... 13
ACCESSORIES & MODIFICATIONS .......................... 17
SI METRIC CONVERSION.......................................... 18
APPLICATION DATA.................................................... 19
DIMENSIONS – STD. .................................................. 26
Evaporator, Condenser & Water Boxes ................... 26
Evaporators, Compact Water Boxes (ft.-in.)............ 28
Evaporators, Compact Water Boxes (mm).............. 29
Condensers, Compact Water Boxes (ft.-in.) ............ 30
Condensers, Compact Water Boxes (mm) .............. 31
Floor Layout, Neoprene Isolators (In.) ..................... 32
Floor Layout, Neoprene Isolators (mm) ................... 33
Floor Layout, Spring Isolators (In. and mm) ............ 34
WEIGHTS – Std. and Metric........................................ 35
GUIDE SPECIFICATIONS ........................................... 36
TABLE
NO.
1 Water Flow Rate Limits................ 19
2 Motor Voltage Variations .............. 22
3 60 Hz Electrical Data.................... 23
4 Motor Starters............................... 24
5 50 Hz Electrical Data.................... 24
6 Available Compressor/Shell/
Motor Combinations ..................... 24
PAGE
Model
Evaporator Code
Condenser Code
The model number denotes the following characteristics of the unit:
Compressor Code
NOMENCLATURE
YR TD TD T0 – 46 A S
Special Features
Design Level
Motor Code
Power Supply:
– for 60 Hz
5 for 50 Hz
2
YORK INTERNATIONAL
Introduction
FORM 160.81-EG1
The YORK MAXE YR Chiller offers a complete combination of features for total owner satisfaction.
MATCHED COMPONENTS MAXIMIZE EFFICIENCY
Actual chiller efficiency cannot be determined by analyzing the theoretical efficiency of any one chiller component. It requires a specific combination of heat exchanger, compressor , and motor performance to achieve
the lowest system IPL V/NPL V . YORK M
AXE chiller tech-
nology matches chiller system components to provide
maximum chiller efficiency under actual – not just theoretical – operating conditions.
REAL-WORLD ENERGY PERFORMANCE
YORK pioneered the term “Real-World Energy” to illustrate the energy-saving potential of focusing on chiller
performance during off-design conditions. Off-design
is not only part-load, but full-load operation as well, with
reduced entering condenser water temperatures
(ECWT s). This is where chillers operate 99% of the time,
and where operating costs add up.
The YR M
AXE chillers are the only chillers designed to
operate on a continuous basis with cold ECWT and full
condenser flow at all load points, taking full advantage
of Real-World conditions. This type of operation benefits
the cooling tower as well; reducing cycling of the fan
motor and ensuring good coverage of the cooling fill.
YORK M
AXE chillers offer the most efficient Real-World
operation of any chiller, meaning lower operating costs
and an excellent return on your chiller investment.
HIGH-EFFICIENCY OIL SEPARATOR
HIGH-EFFICIENCY HEA T EXCHANGERS
M
AXE chiller heat exchangers offer the latest technology
in heat transfer surface design to give you maximum
efficiency and compact design. Waterside and
refrigerant-side design enhancements minimize both energy consumption and tube fouling. The “skip-fin” design
at all intermediate tube supports provides maximum tube
wall thickness at the support area to extend tube life.
FACTORY PACKAGING
REDUCES FIELD LABOR COSTS
YORK M
AXE screw chillers are designed to keep instal-
lation costs low. Where installation access is not a
problem, the unit can be shipped completely packaged,
requiring minimal piping and wiring to complete the
installation.
For those units utilizing a factory installed Solid-State
Starter, the three power leads provide all power to the
chiller and its auxiliaries.
T AKE ADVANTAGE OF COLDER COOLING TOWER
WATER TEMPERATURES
YORK M
AXE screw chillers are designed to take full ad-
vantage of colder cooling tower water temperatures,
which are naturally available during most operating
hours. Considerable energy savings are available by
letting tower water temperature drop, rather than artificially holding it above 75°F (23.9°C), especially at low
load, as some chillers require.
U.L. ACCEPTANCE – YOUR ASSURANCE
OF RELIABILITY
M
AXE YR Screw Chillers utilize high-efficiency oil sepa-
ration, limiting oil carry-over to less than 500 ppm. Oil
is vital in screw compressors for lubrication, rotor sealing and cooling. However, oil in the evaporator can lead
to reduced heat transfer and reduced system performance. The high-efficiency oil separator keeps the oil
in the lube circuit and maximizes heat transfer efficiency .
YORK INTERNATIONAL
YORK M
AXE screw chillers are approved for listing by
Underwriter’s Laboratories for the United States and
Canada. Recognition of safety and reliability is your assurance of trouble-free performance in day-to-day building operation.
3
Ratings
FORM 160.81-EG1
Rated in accordance with the latest
issue of ARI Standard 550/590.
ARI CERTIFICATION PROGRAM
The performance of YORK M
to the Air Conditioning and Refrigeration Institute (ARI)
complying with the certification sections of the latest
issue of ARI Standard 550/590. Under this Certification
Program, chillers are regularly tested in strict compliance with this Standard. This provides an independent,
third-party verification of chiller performance.
YORK YR screw chillers are designed to comply with
ASHRAE Standard 90.1-1999 and 90.1-2001. The superior part-load performance of the YORK YR chillers
far exceeds the IPLV/NPLV requirements of ASHRAE
90.1, providing superior Real World Energy savings
for efficiency conscious owners.
COMPUTERIZED PERFORMANCE RATINGS
Each chiller is custom-matched to meet the individual
building load and energy requirements. A large number of standard heat exchangers and pass arrangements are available to provide the best possible match.
It is not practical to provide tabulated performance for
each combination, as the energy requirements at both
AXE chillers is certified
full- and part-load vary significantly with each heat exchanger and pass arrangement. Computerized ratings
are available through each YORK sales office. These
ratings can be tailored to specific job requirements,
and are part of the ARI Certification Program.
OFF-DESIGN PERFORMANCE
Since the vast majority of its operating hours are spent
at off-design conditions, a chiller should be chosen not
only to meet the full-load design, but also for its ability
to perform efficiently at lower loads and lower tower
water temperatures. It is not uncommon for chillers with
the same full-load kW/TON to have an operating cost
difference of over 10% due to part-load operation.
Part-load information can be easily and accurately generated by computer. And because it is so important to
an owner’s operating budget, this information is now
standard within the ARI Certification Program in the
form of an Integrated Part-Load V alue (IPL V), and NonStandard Part-Load Value (NPLV).
The IPL V / NPLV formulas from ARI Standard 550/590
closely track chiller operations, and provide a more accurate indication of chiller performance than the previous IPL V / APLV formula. A more detailed analysis must
take into account actual building load profiles, and local weather data. Part-load performance data should
be obtained for each job using its own design criteria.
4
YORK INTERNATIONAL
OptiView Control Center
FORM 160.81-EG1
OPTIVIEW CONTROL CENTER
The YORK OptiView Control Center , furnished as standard on each chiller, provides the ultimate in ef ficiency,
monitoring, data recording, chiller protection and operating ease. The control center is a factory-mounted,
wired and tested state-of-the-art microprocessor based
control system for R-134a screw chillers. The panel is
configured with a 10.4 inch diagonal color Liquid Crystal Display (LCD) surrounded by “soft” keys, which are
redefined with one keystroke based on the screen display at that time. This revolutionary development makes
chiller operation quicker and easier than ever before.
Instead of requiring keystroke after keystroke to hunt
for information on a small monochrome LCD screen, a
single button reveals a wide array of information on a
large, full-color illustration of the appropriate component, which makes information easier to interpret. This
is all mounted in the middle of a keypad interface and
installed in a locked enclosure.
The LCD display allows graphic animated display of
the chiller, chiller sub-systems and system parameters;
this 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. A Status
Bar is displayed at all times on all screens. It contains
the System - Status Line and Details Line, the Control
Source, Access Level, Date and Time.
00550VIP
During the Start Sequence and System Lockout Delay ,
the system status will include a countdown timer indicating the time remaining. The control panel is compatible with the YORK Solid State Starter (optional),
Electro-mechanical (E-M) starter, or any customer supplied E-M starter that complies with the YORK R-1131
standard. The locations of various chiller parameters
are clearly marked and instructions for specific operations are provided. The panel verbiage is available in
other languages as an option, with English always available. Data can be displayed in either English or Metric
units, plus keypad entry setpoints of 0.1 increments.
Security access is provided to prevent unauthorized
change of setpoints. This is accomplished with three different levels of access and passwords for each level.
There are screens, displayed values, programmable
setpoints and manual controls only available with service level access to the chiller. They are only displayed
when logged in at the service access level. The Advanced
Diagnostics and troubleshooting information for the chiller
and the panel is also included at this access level.
The panel is fused through a 1-1/2 KVA transformer in
the compressor motor starter to provide individual overcurrent protected power for all controls. Numbered terminal strips for wiring such as Remote Start/Stop, Flow
Switch, Chilled Water Pump and Local or Remote Cycling Device are provided. The Panel also provides field
interlocks that indicate the chiller status. These con-
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OptiView Control Center (continued)
FORM 160.81-EG1
tacts include a Remote Mode Ready To Start, a Cycling Shutdown, a Safety Shutdown and a chiller Run
Contact. Pressure transducers sense system pressures
and thermistors sense system temperatures. The output of each transducer is a DC voltage that is analogous to the pressure input. The output of each thermistor is a DC voltage that is analogous to the temperature it is sensing.
Setpoints can be changed from a remote location via
0-10VDC, 4-20mA, contact closures or through serial
communications. The adjustable remote reset range [up
to 20°F (11.1°C)] provides flexible, efficient use of remote signal depending on reset needs. Serial data interface to the YORK ISN Building Automation System (BAS)
is through the General Protocol Interface Card (GPIC),
which can be mounted inside the Control Center.
This printed circuit board requests the required data from
the Micro Board and makes it available for the YORK
ISN network. This optional board is available through
the YORK BAS group. The operating program is stored
in non-volatile memory (EPROM) to eliminate chiller
failure due to AC power failure/battery discharge. Programmed setpoints are retained in lithium batterybacked RTC memory for 11 years minimum.
Smart Freeze Point Protection can operate the chiller
as low as 36°F (2.22°C) leaving chilled water temperature, without nuisance trips on Low Water Temperature.
The sophisticated program and sensor monitors the
chiller water temperature to prevent freeze-up. Each
programmable point has a pop-up screen with the allowable ranges, so the chiller cannot be programmed
to operate outside of its design limits.
Thermal ice storage systems are based on the concept
of using off-peak, lower cost electricity to build ice for
handling the cooling load during peak hours. The most
efficient way to build ice is to maximize chiller load and
minimize run time. Standard chiller control systems are
not designed for this operating mode. In a typical application, chillers will load and unload to maintain a leaving
chilled liquid setpoint. When the YORK YR chiller operates in the thermal storage control mode, the unit will
remain at 100% load until the setpoint shutdown temperature is reached. To add greater operating flexibility
and eliminate unnecessary chiller cycling, two different
Low Water (Liquid) T emperature Restart Thresholds can
be programmed, one for the ice mode and one for the
standard cooling mode. This control enhancement is standard on all YR chillers. The chiller can also be left in the
standard control mode for temperatures ranging between
20 and 70°F (-6.7 and 21.1°C), for applications involving
a process or comfort cooling duty that requires leaving
chilled liquid temperature setpoint control.
When power is applied to the chiller, the HOME screen is
displayed. This screen displays a visual representation of
the chiller and a collection of data detailing important operations and parameters. When the chiller is running, the
flow of chilled liquid is animated by the alternating shades
of color moving in and out of the pipe nozzles. The primary values that need to be monitored and controlled are
shown on this screen. They are as follows:
Display Only:
• Chilled Liquid Temperature – Leaving
• Chilled Liquid Temperature – Return
• Condenser Liquid Temperature – Return
• Condenser Liquid Temperature – Leaving
• Motor Run (LED)
• % Full-load Amps
• Operating Hours
With the “soft” keys the operator is only one touch away
from the 8 main screens that allow access to the major
information and components of the chiller. The 8 screens
are the SYSTEM, EV APORAT OR, CONDENSER, COM-
PRESSOR, OIL SUMP, MOTOR, SETPOINTS, and the
HISTORY. Also on the Home Screen is the ability to Log
IN, Log OUT and Print. Log In and Log Out is the means
by which different security levels are accessed.
The SYSTEM screen gives a general overview of com-
mon chiller parameters for both shells. This is an end
view of the chiller with a 3-D cutaway of both the shells.
The following can be viewed from this screen:
Display Only:
• Discharge Temperature
• Chilled Liquid Temperature – Leaving
• Chilled Liquid Temperature – Return
• Chilled Liquid Temperature – Setpoint
• Evaporator Pressure
• Evaporator Saturation Temperature
• Condenser Liquid Temperature – Leaving
• Condenser Liquid Temperature – Return
• Condenser Pressure
• Condenser Saturation Temperature
• Oil Temperature
• Differential Oil Pressure
• % Full-load Amps
• Current Limit
• Slide Valve Position
6
YORK INTERNATIONAL
FORM 160.81-EG1
The EVAPORATOR 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 RUN condition (bubbling) and
liquid flow in the pipes is indicated by alternating shades
of color moving in and out of the pipes. Adjustable limits on the low water temperature setpoints allow the
chiller to cycle on and off for greater efficiency and less
chiller cycling. The chiller cycles off when the leaving
chilled water temperature is below setpoint and is adjustable from 1°F (0.55°C) below to a minimum of 36°F
(2.22°C). Restart is adjustable from setpoint up to a
max. of 80°F (26.6°C). The Panel will check for flow to
avoid freeze-up of the tubes. If flow is interrupted, shutdown will occur after a minimum of two seconds. The
following can also be performed through this screen:
Display Only:
• Chilled Liquid Flow Switch (Open/Closed)
• Chilled Liquid Pump (Run/Stop)
• Evaporator Pressure
• Evaporator Saturation Temperature
• Return Chilled Liquid Temperature
• Leaving Chilled Liquid Temperature
• Evaporator Refrigerant Temperature
• Small Temperature Difference
• Leaving Chilled Liquid Temperature Setpoints –
Setpoint
• Leaving Chilled Liquid Temperature Setpoints –
Remote Range
• Leaving Chilled Liquid Temperature Setpoints –
Shutdown
• Leaving Chilled Liquid Temperature Setpoints –
Shutdown Offset
• Leaving Chilled Liquid Temperature Setpoints –
Restart
• Leaving Chilled Liquid Temperature Setpoints –
Restart Offset
• Ice Storage Active (LED)
Programmable:
• Local Leaving Chilled Liquid Temperature – Range
• Local Leaving Chilled Liquid T emperature – Setpoint
• Leaving Chilled Liquid Temperature Cycling Offset –
Shutdown
• Leaving Chilled Liquid Temperature Cycling Offset –
Restart
The CONDENSER screen displays a cutaway view of
the chiller condenser. The liquid flow is animated to indicate flow through the condenser. All setpoints relating to the condenser side of the chiller are maintained
on this screen. With the proper access level this screen
also serves as a gateway to controlling the Refrigerant
Level. The following can also be viewed through this
screen:
Display Only:
• Leaving Condenser Liquid Temperature
• Return Condenser Liquid Temperature
• Condenser Pressure
• Condenser Saturation Temperature
• Small Temperature Difference
• High Pressure Switch (Open/Closed)
• Condenser Liquid Flow Switch
• Condenser Liquid Pump (Run/Stop)
Programmable:
• High Pressure Warning Threshold
• Freeze Warning (Enabled/Disabled)
• Freeze Time
The COMPRESSOR 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. From this screen you can view the following:
Display Only:
• Differential Oil Pressure
• Oil Temperature
• Discharge Temperature
• Discharge Superheat
• Slide Valve Position
• Oil Return Solenoid (LED)
• Full-load Amps (E.M. Starter Only)
• Phase A, B, C Current (SSS Only)
Programmable:
• Slide Valve Load (Manual)
• Slide Valve Hold (Manual)
YORK INTERNATIONAL
7
OptiView Control Center (continued)
FORM 160.81-EG1
• Slide Valve Unload (Manual)
• Slide Valve Auto
• Max. Load Temperature
• Minimum Load FLA
• Minimum Load Control Source
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. From
this screen you can perform the following:
Display Only:
• Slide Valve Position
• Return Chilled Liquid Temperature
• Leaving Chilled Liquid Temperature
• Hot Gas Solenoid (LED)
Programmable:
• On Setpoint
• Off Setpoint
The SLIDE VALVE CALIBRATION 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. From this screen, you
can perform the following:
Display Only:
• Slide Valve Loading (LED)
• Slide Valve Unloading (LED)
• Calibration Message
Programmable:
• Start Calibration
• Cancel Calibration
The OIL SEPARATOR screen displays a close-up view
of the chiller oil separator/sump.
Display Only:
• Discharge Temperature
• Discharge Superheat
• Oil Pressure
• Discharge Pressure
8
• Differential Oil Pressure
• Differential Filter Pressure
• Oil Return Solenoid (LED)
• Evaporator Pressure
• Condenser Pressure
• Condenser Saturation
1. The MOTOR “soft” key on the HOME screen, when
pressed, shows a picture of either a YORK ElectroMechanical Starter or a Solid State Starter, depending on chiller configuration. The Programmable
pulldown demand to automatically limit motor loading can be used to minimize building demand
charges. Pulldown time period control over four
hours, and verification of time remaining in pulldown
cycle from display readout. Separate digital setpoint
for current limiting between 30 and 100%.
The ELECTRO-MECHANICAL STARTER (E–M)
screen displays a picture of the starter and the following values. The ones below are common among both
offerings and the values will be displayed on both types
of starter screens. From this screen you can perform
the following:
Display Only:
• Motor Run (LED)
• Motor Current % Full-load Amps
• Current Limit Setpoints
• Pulldown Demand Time Left
Programmable:
• Local Motor Current Limit
• Pulldown Demand Limit
• Pulldown Demand Time
The SOLID STATE STARTER (SSS) screen displays a
picture of the starter and the following values, which are
displayed in addition to the common ones listed above.
From this screen, you can perform the following:
Display Only:
• Input Power kW
• kW Hours
• Starter Model
• Voltage – Phase A, B, C
• Current – Phase A, B, C
• Temperature – Phase A, B, C
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FORM 160.81-EG1
Programmable:
• Full-load Amps
• Voltage Range
• Starting Current
• Open SCR
• Shorted SCR
• kWH Reset
The SETPOINTS screen provides a convenient location for programming the most common setpoints involved in the chiller control. The Setpoints are shown
on other individual screens, but to cut down on needless searching, they can all be found on this screen.
This screen also serves as a gateway to a sub-screen
for defining the setup of general system parameters.
From this screen you can perform the following:
Display Only:
• Leaving Chilled Liquid Temperature – Setpoint
• Leaving Chilled Liquid Temperature Cycling –
Shutdown
• Leaving Chilled Liquid Temperature Cycling –
Restart
• Current Limit Setpoint
Programmable:
• Local Leaving Chilled Liquid Temperature – Range
• Local Leaving Chilled Liquid T emperature – Setpoint
• Leaving Chilled Liquid Temperature Cycling Offset –
Shutdown
• Leaving Chilled Liquid Temperature Cycling Offset –
Restart
• Remote Analog Input Range
• Local Motor Current Limit
• Pulldown Demand Limit
• Pulldown Demand Time
• Print
The SETUP 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. In addition, the chiller configuration as
determined by the Micro Board program jumpers and
program switches is displayed. From this screen you
can perform the following:
Display Only:
• Chilled Liquid Pump Operation (Displays Standard
or Enhanced)
• Anti-Recycle (Displays Disabled or Enabled)
• Power Failure Restart (Displays Manual or Automatic)
• Liquid Type (Displays Water or Brine)
Programmable:
• Set Date
• Set Time
• Clock (Enabled/Disabled)
• 12/24 Hour
The following six subscreens can be accessed from
the SETUP screen:
The SCHEDULE screen contains more programmable
values than a normal display screen. Each programmable value is not linked to a specific button; instead,
the select key is used to enable the cursor arrows and
check key to program the Start/Stop times for any day
of the week up to 6 weeks in advance. The user has
the ability to define a standard set of Start/Stop times
that are utilized every week or specify exceptions to
create a special week.
Programmable:
• Exception Start/Stop Times
• Schedule (Enable/Disable)
• Repeat Sunday Schedule
• Standard Week Start/Stop Times
• Reset All Exception Days
• Select
• Print
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OptiView Control Center (continued)
FORM 160.81-EG1
The USER screen allows definition of the language for
the chiller to display and defines the unit of measure.
Programmable:
• System Language
• English/Metric Units
The COMMS screen allows the user to define communications parameters.
Programmable:
• Chiller ID
• COM 2 Baud Rate
• COM 2 Data Bit(s)
• COM 2 Parity Bit(s)
• COM 2 Stop Bit(s)
• Printer Baud Rate
• Printer Data Bit(s)
• Printer Parity Bit(s)
• Printer Stop Bit(s)
The PRINTER screen permits the user to define communications Parameters for the Printer.
Display Only
• Time Remaining Until Next Print
Programmable
• Log Start Time
• Output Interval
• Automatic Printer Logging (Enabled/Disabled)
• Print Type
• Print Report
• Print All Histories
The SALES ORDER screen allows definition of the order parameters. Note: This information is loaded at the
factory or by the installation service technician.
The OPERATIONS screen permits definition of param-
eters pertaining to operation of the chiller. What is defined is whether the control of the chiller will be Local,
Digital Remote, Analog Remote, Modem Remote or ISN
Remote.
Programmable
• Control Source
The HISTORY screen allows the user to browse through
the last ten faults; either safety or cycling shutdowns
with the conditions, while the chiller is running or
stopped. The faults are color coded for ease in determining the severity at a glance, recording the date, time
and description. (See Display Messages for Color Code
meanings.)
Display Only
• Last Normal Shutdown
• Last Fault While Running
• Last Ten Faults
Programmable:
• Print History
• Print All Histories
By pressing the VIEW DETAILS key you will move to
the HISTORY DETAILS screen. From these screens
you are able to see an on-screen printout of all the system parameters at the time of the selected shutdown.
Display Only:
• History Printout
Programmable:
• Page Up
• Page Down
• Print History
Display Only
• Model Number
• Panel Serial Number
• Chiller Serial Number
• YORK Order Number
• System Information
• Condenser and Evaporator Design Load Information
• Nameplate Information
10
Also under the HISTORY screen is the TRENDING
screen, accessible by the key marked the same. On
this screen, up to six operator-selected parameters, selected from a list of over 140, can be plotted in an X/Y
graph format. The graph can be customized to record
points once every second up to once every hour. There
are two types of charts that can be created: single
screen, or continuous screen. The single screen collects data for one screen width (450 data points across
the X-axis), then stops. The continuous screen keeps
YORK INTERNATIONAL
FORM 160.81-EG1
collecting the data, but the oldest data drops off the
graph from left to right at the next data collection interval. For ease of identification, each plotted parameter,
title and associated Y-axis labeling is color coordinated.
Display Only:
• This screen allows the user to view the graphical
trending of the selected parameters and is a gateway to the graph setup screens.
Programmable:
• Start
• Stop
• y-axis
• x-axis
The TREND SETUP screen is used to configure the
trending screen. The parameters to be trended are selected from the Trend Common Slots screen, accessed
from the Slot Numbers button or the Master Slot Numbers List found in the Operating Manual. The interval at
which all the parameters are sampled is selected under
the Collection Interval button. The data point minimum
and maximum values may be adjusted closer to increase viewing resolution.
DISPLAY MESSAGES
The Control Center continuously monitors the operating system, displaying and recording the cause of any
shutdowns (Safety, Cycling or Normal). The condition
of the chiller is displayed at the System Status line that
contains a message describing the operating state of
the chiller; whether it is stopped, running, starting or
shutting down. A System Details Line displays Warning, Cycling, Safety, Start Inhibit and other messages
that provide further details of the Status Bar messages.
Messages are color-coded: Green – Normal Operations;
Yellow – Warnings; Orange – Cycling Shutdowns; and
Red – Safety Shutdowns to aid in identifying problems
quickly.
Status messages include:
• System Ready To Start
• Cycling Shutdown – Auto Restart
• Safety Shutdown – Manual Restart
• Start Sequence Initiated
• System Run (with countdown timers)
• Start Inhibit
• Slide Valve Closing Before Shutdown
• System Lockout Delay
Programmable:
• Chart Type (select continuous or one screen)
• Collection Interval
• Select
• Data Point Slot Number (1 - 6)
• Data Point Min. (1 - 6)
• Data Point Max (1 - 6)
The TREND COMMON SLOTS screen displays the
Master Slot Numbers List of the monitored parameters.
Display Only:
• Slot Numbers
Programmable:
• Page Up
• Page Down
• Print
Run Messages include:
• Leaving Chilled Liquid Control
• Motor Pulldown Limit
• Motor – High Current Limit
Start Inhibit Messages include:
• Anti-Recycle XX min/sec.
• Slide Valve – Position >30%
• Motor Current >15% FLA
• LCSSS – High-Temperature Phase X - Stopped
Warning Messages include:
• Real Time Clock Failure
• Setpoint Override
• Condenser – High Pressure Limit
• Evaporator – Low Pressure Limit
• Freeze Threat From Operating Chiller
• Freeze Threat, Condenser Flow Switch Open
• Low Discharge Superheat Limit
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OptiView Control Center (continued)
FORM 160.81-EG1
• Low Discharge Superheat Detected
• Maximum Load – Load Limit
• Minimum Load – Load Limit
• Oil – Dirty Filter
• Oil – High Temperature
• Slide Valve Uncalibrated
Routine Shutdown Messages Include:
• Remote Stop
• Local Stop
• Place Compressor Switch In Run Position
Cycling Shutdown Messages Include:
• Multiunit Cycling – Contacts Open
• System Cycling – Contacts Open
• Control Panel – Power Failure
• Leaving Chilled Liquid – Low Temperature
• Leaving Chilled Liquid – Flow Switch Open
• Condenser – Flow Switch Open
• Motor Controller – Contacts Open
• Motor Controller – Loss of Current
• Power Fault
• Control Panel – Schedule
Solid State Starter Only (LCSSS)
• Initialization Failed
• Serial Communications
• Requesting Fault Data
• Stop Contacts Open
• Power Fault
• Low Phase (X) Temperature Sensor
• Run Signal
• Invalid Current Scale Selection
• Phase Locked Loop
• Low Supply Line Voltage
• High Supply Line Voltage
• Logic Board Processor
• Logic Board Power Supply
• Phase Loss
Safety Shutdown Messages include:
• Evaporator – Low Pressure
• Evaporator – Low Pressure – Smart Freeze
• Evaporator – Transducer or Leaving Liquid Probe
• Evaporator – Transducer or Temperature Sensor
• Condenser – High Pressure Contacts Open
• Condenser – High Pressure
• Condenser – Pressure Transducer Out of Range
• Auxiliary Safety – Contacts Closed
• Discharge – High Temperature
• Discharge – Low Temperature
• Oil – Low Differential Pressure
• Oil or Condenser Transducer Error
• Oil – Clogged Filter
• Oil – High Pressure
• Control Panel – Power Failure
• Watchdog – Software Reboot
Solid State Starter Only (LCSSS)
• Shutdown – Requesting Fault Data . . .
• High Instantaneous Current
• High Phase (X) Heatsink Temperature – Running
• 105% Motor Current Overload
• Motor or Starter – Current Imbalance
• Open SCR
• Phase Rotation
12
YORK INTERNATIONAL
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