York Millennium YCAJ150 Installation Operation & Maintenance
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York Millennium YCAJ150 Installation Operation & Maintenance

York Millennium YCAJ150 Installation Operation & Maintenance

Air-cooled-reciprocating hermetic
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TM
Millennium
LIQUID CHILLERS
AIR-COOLED – RECIPROCATING HERMETIC
INSTALL., OPER., MAINT.
Supersedes: See Back Page
Form 150.65-NM4 (198)
60 HZ MODELS
YCAJ150 - 230
26810A
200, 230, 460-3-60
* With EPROM
031-01652-001
(Standard, Brine & Metric Models, Combined)

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  • Page 1 Millennium LIQUID CHILLERS AIR-COOLED – RECIPROCATING HERMETIC INSTALL., OPER., MAINT. Supersedes: See Back Page Form 150.65-NM4 (198) 60 HZ MODELS YCAJ150 - 230 26810A 200, 230, 460-3-60 * With EPROM 031-01652-001 (Standard, Brine & Metric Models, Combined)

  • Page 2: Table Of Contents

    460-3-60), N.E.C., ASHRAE/ANSI STANDARD 15, and lation requiring only liquid connections, power and con- ASME Codes. trol wiring. They are designed primarily for central sta- tion air conditioning applications with normal installa- tions being on roof-tops or on ground level beside the building. YORK INTERNATIONAL...

  • Page 3: Typical Nomenclature

    FORM 150.65-NM4 UNIT NOMENCLATURE — Chiller: Design Level YC = YORK Chiller Type Start: P = Part Wind Air Cooled Compressor Type: J = Reciprocating Voltage Code: 17 = 200-3-60 Unit Model 28 = 230-3-60 40 = 380-3-60 46 = 460-3-60...

  • Page 4: Unit Components

    LIQUID STOP VALVE COOLER INLET SYSTEM #1 FILTER / DRIER COOLER HEATER & THERMOSTAT SYSTEM #2 FILTER / DRIER 25994A THERMO LIQUID LINE EXPANSION SOLENOIDS VALVES 25996A HOT GAS BYPASS SYSTEM #1 FIG. 1 – UNIT COMPONENTS LD02643 YORK INTERNATIONAL...

  • Page 5: Compressor Components

    COMPRESSOR TERMINAL BOX MOTOR TERMINALS SUPPRESSORS MOTOR PROTECTOR (MP) 27299A 8-CYLINDER MODEL J COMPRESSOR DISCHARGE STOP VALVE RAINTIGHT TERMINAL SUCTION STOP VALVE OIL PRESSURE ACCESS CONN. SIGHT CAPACITY GLASSES CONTROL SOLENOID 27599A OIL CHARGING VALVE FIG. 2 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...

  • Page 6: Operational Limitations

    CAUTION: Excessive flow will cause damage to the cooler. Do not exceed max. cooler GPM. J150, J160 Special care should be taken when mul- tiple chillers are fed by a single pump. J180, J190 J200, J220, J230 FIG. 3A – COOLER WATER PRESSURE DROP (English) YORK INTERNATIONAL...
  • Page 7 CAUTION: Excessive flow will cause damage to the cooler. Do not exceed max. cooler flow. J150, J160 Special care should be taken when mul- tiple chillers are fed by a single pump. J180, J190 J200, J220, J230 FIG. 3B – COOLER WATER PRESSURE DROP (SI) YORK INTERNATIONAL...

  • Page 8: Physical Data

    Copper Fins 17,268 17,959 18,850 18,850 20,500 20,712 20,874 WEIGHT (LBS.) Alum. Fins 15,218 15,909 16,900 16,950 17,950 18,162 18,324 OPERATING Copper Fins 17,668 18,359 19,350 19,400 21,100 21,262 21,474 Sys. 1 REFRIG. CHARGE (LBS. R-22) Sys. 2 YORK INTERNATIONAL...
  • Page 9 Copper Fins 7833 8146 8550 8550 9299 9395 9468 WEIGHT (LBS.) Alum. Fins 6903 7216 7666 7688 8142 8238 8312 OPERATING Copper Fins 8014 8328 8777 8800 9571 9644 9740 Sys. 1 REFRIG. CHARGE (Kg R-22) Sys. 2 YORK INTERNATIONAL...

  • Page 10: Dimensions

    2. Panel bottom to be punched in field to accommodate power wir- NOTES: ing conduit. 1. Clearances – Recommended YORK clearances for peak per- 3. Use of isolators (optional) will increase height of unit approxi- formance, reliable operation, and maintenance: Side to wall – 8';...
  • Page 11 NOTES: 3. Drawings not to scale and are for planning purposes only. Con- 1. Clearances – Recommended YORK clearances for peak per- tact nearest YORK Sales Office for detailed drawings. formance, reliable operation, and maintenance: 4. Spring isolator (optional) will increase height of unit by approxi- Side to wall –...

  • Page 12: Electrical Data

    4. Minimum and Maximum Circuit Breaker rating required per N.E.C. and U.L. 1995 Fig. 36.2. Minimum C.B. rating = 1.5 x Largest Compr RLA + Other Compr RLAs + (# Fans) x Fan FLA. Maximum C.B. rating = 2.25 x Largest Compr RLA + Other Compr RLAs + (# Fans) x Fan FLA. YORK INTERNATIONAL...
  • Page 13 FORM 150.65-NM4 SINGLE POINT POWER SUPPLY WIRING (OPTIONAL) SYSTEM #1 SYSTEM #2 MODEL INCOMING DUAL ELEM YORK SUPPLIED DISCONNECT WIRE RANGE FUSE (CU ONLY) DISC (CU ONLY) J150 (2) #2 - 600 (1) #1 - 600 or (2) #1 - 250...
  • Page 14 = Minimum Circuit Ampacity DISC = Disconnect = Not Available CPR-RLA = Compressor Running Load Amps CPR-RLA = Compressor Part Winding Inrush Amps = Full Load Amps CKT BRK = Circuit Breaker HACR = Heating, Air Conditioning and Refrigeration YORK INTERNATIONAL...
  • Page 15 COMPRESSOR SEE NOTE 5 POWER BY OTHERS SUPPLY LD01175 CONTROL POWER SUPPLY MAXIMUM NON-FUSED CONTROL MINIMUM UNIT DUAL- DISC. POWER CIRCUIT VOLTAGE ELEMENT SWITCH SUPPLY AMPACITY FUSE SIZE SIZE Standard Models without 115-1-60 20A, 250V 30A, 240V Transformers YORK INTERNATIONAL...

  • Page 16: Installation

    Check water piping to To protect warranty, this equipment must be in- insure cleanliness. stalled and serviced by an authorized YORK ser- 4. Pipe unit using good piping practice and consistent vice mechanic or a qualified service person experi- with local code requirements.
  • Page 17 Choose a spot with adequate structural strength to safely 25112A COMPRESSOR MOUNTING PAD support the entire weight of the unit and service person- nel. Care must be taken not to damage the roof. FIG. 5 – COMPRESSOR MOUNTING PAD YORK INTERNATIONAL...

  • Page 18: Weight Distribution And Isolator Locations

    WEIGHT DISTRIBUTION AND ISOLATOR LOCATIONS FOR EACH MODEL LD01089 LD01168 VMC CP-2-X VMC CP-4-X NOTE: Standard 1" (25.4 mm) deflection isolator drawings. Consult your nearest YORK representative for additional isolator options. TYPE MAX. LOAD SPRING DEFL & SIZE LBS. (KG) COLOR IN.
  • Page 19 7. A chilled water flow switch, (either by YORK or oth- All relief valves are resealable type safety devices. YORK INTERNATIONAL...

  • Page 20: Wiring Diagrams

    Wiring shall not be run in the same conduit with (Class 2) Connections. See Note 2 any line voltage wiring. Terminal Block for YORK Connections Only 3. To cycle unit on and off automatically with contact shown, install Wiring and Components by YORK a cycling device in series with the flow switch (FLSW).
  • Page 21 FORM 150.65-NM4 LD02461 FIG. 6 – ELEMENTARY DIAGRAM (Cont’d) YORK INTERNATIONAL...
  • Page 22 YORK INTERNATIONAL...
  • Page 23 Any contacts con- nected to flow switch inputs or BAS inputs on terminals 13 - 19 or TB3, or any other ter- minals, must be sup- pressed with a YORK P/N 031-00808-000 suppressor across the CONTROL POWER SUPPLY relay/contactor coil. MAXIMUM...
  • Page 24 CONNECTION DIAGRAM FIG. 7 – CONNECTION DIAGRAM LD02463 YORK INTERNATIONAL...
  • Page 25 FORM 150.65-NM4 LD02462 FIG. 7 – CONNECTION DIAGRAM (Cont’d) YORK INTERNATIONAL...
  • Page 26 CONNECTION DIAGRAM TERMINAL BOX AND SYSTEM WIRING LD02464 FIG. 8 – SYSTEM WIRING YORK INTERNATIONAL...
  • Page 27 FORM 150.65-NM4 CONNECTION DIAGRAM TERMINAL BOX AND SYSTEM WIRING LD02649 FIG. 8 – SYSTEM WIRING (Cont’d) YORK INTERNATIONAL...
  • Page 28 CONNECTION DIAGRAM TERMINAL BOX AND SYSTEM WIRING LD02650 FIG. 8 – SYSTEM WIRING (Cont’d) YORK INTERNATIONAL...
  • Page 29 FORM 150.65-NM4 CONNECTION DIAGRAM TERMINAL BOX AND SYSTEM WIRING LD02651 FIG. 8 – SYSTEM WIRING (Cont’d) YORK INTERNATIONAL...
  • Page 30 LD02499 FIG. 8 – SYSTEM WIRING (Cont’d) YORK INTERNATIONAL...

  • Page 31: Unit Controls And Operation

    FIG. 9 – MILLENNIUM CONTROL CENTER INTRODUCTION MICROPROCESSOR BOARD The YORK Millennium Control Center is a microproces- The Microprocessor Board is the controller and decision- sor based control system capable of multi-circuit control maker in the control panel. System inputs from pres- to maintain chilled liquid temperature.
  • Page 32 SYS 1 FAN OVERLOADS SYS 2 POWER WIRING CONNECTION POINT SYS 1 TB1 CONNECTIONS POWER WIRING FOR OPTIONAL CONNECTION ALARMS, EVAP. POINT PUMP, COND. PUMP AND L & 2 115VAC CONTROL PANEL SUPPLY 25998A FIG. 10 – POWER PANEL YORK INTERNATIONAL...
  • Page 33 POWER SUPPLY BOARD LCD DISPLAY BOARD TRANSFORMER RELAY OUTPUT MICROPROCESSOR BOARD #1 BOARD LOCATION OF OPTIONAL RELAY OUTPUT BOARD #2 UNIT ON/OFF SWITCH CONNECTIONS FOR FLOW SWITCH, LEAD/LAG SELECT & EMS/BAS CONTROLS FIG. 12 – CONTROL PANEL 28697A YORK INTERNATIONAL...

  • Page 34: Display Keys

    6 0 , D P = 2 2 9 P S I G sponding display messages will be discussed in the text which follows. * Discharge Pressure Readout is an option. Without this option, the display will read a fixed value. YORK INTERNATIONAL...
  • Page 35 Fig. 13 shows the location and verification of switch po- total of 99999 hours before rollover. Accumulated starts sitioning of S1. * Discharge Pressure Readout is an option. Without this option, the display will read a fixed value. YORK INTERNATIONAL...
  • Page 36 C O N T R O L TOP VIEW EPROM SIDE SIDE VIEW “OPEN” POSITION (LEFT SIDE OF SWITCH IS PUSHED DOWN) “CLOSED” POSITION (RIGHT SIDE OF SWITCH IS 26001A PUSHED DOWN) FIG. 13 – DIP SWITCH S1 AND EPROM LOCATION LD01098 YORK INTERNATIONAL...
  • Page 37 * Positioning of this switch also affects the range of adjustments on the Suction Pressure Cut-out (page 46) and the Low Leaving Water Temp. YORK INTERNATIONAL...
  • Page 38 See page 93 for fan control sequence. NOTE: Discharge pressure transducers must be in- stalled. These are optional (Discharge Pressure Read-out Option) unless a Low Ambient Kit is installed. YORK INTERNATIONAL...

  • Page 39: Status Key

    D A I L Y S C H E D U L E S H U T D O W N The DAILY SCHEDULE SHUTDOWN message indicates YORK INTERNATIONAL...
  • Page 40 A list of the fault messages are shown on the next page: out will shut the system down causing total loss of cool- ing. When this message appears, discharge pressure has exceeded the user programmable threshold and the YORK INTERNATIONAL...
  • Page 41 C U R R E N T S Y S # 1 P U M P D O W N F A I L S Y S # 2 P U M P D O W N F A I L YORK INTERNATIONAL...

  • Page 42: Entry Key

    The day will advance a day at a time, each time If this is not done, the new numbers entered will be lost the key is pressed. and the original values will be returned. YORK INTERNATIONAL...

  • Page 43: Program Key

    FAILURE TO PROPERLY PROGRAM THESE VALUES between 200 - 399 PSIG (1.4 - 2.8 mPa) for this cut-out. MAY CAUSE DAMAGE TO THE CHILLER OR OPERA- For this cut-out to be functional, the Discharge Pressure TION PROBLEMS. Readout Option must be installed. YORK INTERNATIONAL...
  • Page 44 A I R T M P H I G H NOTE: It is required to first key in a “0” when program- C U T O U T 1 3 0 . 0 ming this cut-out (Example: 0375 PSIG). YORK INTERNATIONAL...
  • Page 45 (glycol) temperatures are required below values like 00.1°F (0.05°C), it is first required to key 40°F, the cut out should be programmed for 4°F (2.2°C) in “00”. Example: 00.1°F (0.05°C). Additional details below the desired leaving chilled liquid temperature. YORK INTERNATIONAL...
  • Page 46 30 - 150 seconds per stage load- poses. ing rate which is based on error between setpoint and actual temperature. Program the number of steps as required. If 5 or 7 steps is programmed, the “0” key (05 or 07) must be pressed first. YORK INTERNATIONAL...

  • Page 47: Clock Keys

    1 1 : 1 2 A M The micro will accept any valid time or date. If an out of 0 6 / 0 3 / 9 8 range value is entered, the micro will display the follow- YORK INTERNATIONAL...
  • Page 48 If the chiller is not cycled by the DAILY SCHEDULE, but is required to run whenever the system switches are on, The “0” key will not cancel out a “*” and cannot be used all 00.00s should be programmed into the daily sched- for correcting a programming error. YORK INTERNATIONAL...
  • Page 49 30 minutes. It is for servicing only and is Normally this key is not used unless an emergency forces designed so that if left on accidentally, the microproces- the chiller to require operation during a period where the sor will automatically return to the Daily Schedule. YORK INTERNATIONAL...

  • Page 50: Selection Of Return Or Leaving Chilled Liquid

    L E A V I N G W A T E R After determining the mode of control best suited for the T E M P C O N T R O L application (RETURN OR LEAVING WATER CONTROL), YORK INTERNATIONAL...

  • Page 51: Setpoints Keys

    54°F (12.2°C) with the R E T U R N W A T E R chiller cycling completely off at 44.0°F (6.7°C). These T E M P C O N T R O L YORK INTERNATIONAL...
  • Page 52 (10°F [5.5°C] above the high end the Control Range), erwise the new values will not be entered into memory. is shown. After pressing the ENTER key, the display will continue to show the LWT and Control Range message until an- other key is pressed. YORK INTERNATIONAL...
  • Page 53 11.1°C) are advisable with temperatures around 20°F (11.1°C) most appropriate. This will cause the control to For normal comfort cooling, batch, or process applica- react to water temperature rate of change well before the tions, select a high RATE SENSITIVITY of 5°F/min (2.8°C/ YORK INTERNATIONAL...
  • Page 54 “Rate Control” requires. The Low-Limit Water Tem- perature (LWT) is the minimum acceptable leaving water temperature in the Control Range (CR), not the actual The lower limit of the CR will always auto- user desired leaving water temperature setpoint. matically equal LWT. YORK INTERNATIONAL...
  • Page 55 Limit Water Setpoint (LWT) and the “Target” Tempera- pressor/loader cycling thus saving energy and reducing ture (Desired Leaving Water Temperature), Rate Control wear on mechanical components. It also reduces the software will cause unloading if temperature drops faster YORK INTERNATIONAL...
  • Page 56 The micro will accept a range of programmable values Key in the desired value and press the ENTER key. The between 0.1 - 20°F (0.05 - 11.1°C). new value will be entered into memory and the display will advance to the next user programmable limit. YORK INTERNATIONAL...
  • Page 57 The micro will unload a stage 2°F (1.1°C) below the the chiIler as needed in 150 sec. intervals until tempera- temperature at which it was loaded assuming unload- tures fall into the lower half of the CONTROL RANGE. If ing timers and rate control software allows. YORK INTERNATIONAL...
  • Page 58 7 Step (optional) chillers may ap- pear delayed (time between stages in- creased) when missing steps are acti- vated or deactivated by the micro. LD02665 FIG. 18 – 7 STEP LOADING/UNLOADING (RETURN WATER CONTROL) YORK INTERNATIONAL...
  • Page 59 FORM 150.65-NM4 10 STEP (OPTIONAL) FIG. 19 – 10 STEP LOADING/UNLOADING (RETURN WATER CONTROL) LD02660 NOTE: Temperatures in parentheses are Celsius equivalents. YORK INTERNATIONAL...
  • Page 60 LEAD COMP UNLOADED, LAG COMP OFF LEAD COMP OFF, LAG COMP OFF – – – LEAD COMP OFF, LAG COMP OFF TEMPERATURE FALL * This step is skippped on a temperature drop. FIG. 20 – LEAVING WATER CONTROL LOADING/UNLOADING YORK INTERNATIONAL...

  • Page 61: System Safeties

    M O T O R C U R R E N T fed to the motor contactor. The motor contactor de-ener- gizes and motor current falls to zero. The low motor cur- rent is sensed by the microprocessor and the system is YORK INTERNATIONAL...
  • Page 62 This safety is a back-up for the mechanical safety in the system. Anytime the cut-out point is exceeded, the sys- This safety protects the compressor from catastrophic tem will shut down. failure by sensing when an internal problem occurs that YORK INTERNATIONAL...
  • Page 63 5°F (2.8°C) S Y S # 2 H I G H M T R C U R R above the cut-out before the fault lockout would clear and restart can occur. YORK INTERNATIONAL...
  • Page 64 This allows the chiller to continue to run under re- H I G H A M B I E N T T E M P duced capacity to avoid total loss of cooling resulting from a lockout on a safety. YORK INTERNATIONAL...
  • Page 65 Anytime a compressor shuts down for any reason, re- start cannot occur until the programmable Anti-recycle Timer (Page 45) has timed out (timer starts with the com- The PUMPING DOWN message indicates that the re- spective compressor is presently in the process of pump- YORK INTERNATIONAL...
  • Page 66 120 pumpdowns available. shown below. S Y S # 1 P U M P D O W N F A I L S Y S # 2 P U M P D O W N F A I L YORK INTERNATIONAL...

  • Page 67: Print Keys

    FORM 150.65-NM4 “PRINT” KEYS “PRINT” KEYS 02711TG Photo # YORK INTERNATIONAL CORPORATION GENERAL RECIPROCATING WATER CHILLERS SYSTEM STATUS The PRINT keys allow the operator to obtain a remote 8:45AM 6/3/98 printout of real-time system operating data and a print- SYS 1...
  • Page 68 “instant the fault occurred” for each of the 3 other system conditions which actually caused the safety SAFETY SHUTDOWN BUFFERS. There is one buffer threshold to be exceeded. (See Fig. 22) YORK INTERNATIONAL CORPORATION YORK INTERNATIONAL CORPORATION YORK INTERNATIONAL CORPORATION RECIPROCATING WATER CHILLERS...
  • Page 69 Lag Compr Unloaded grammed (Page 46). Tables for decoding the display message are shown at the top of the next column: Lead Compr 1 Stage Loading, Lag Compr 1 Stage Loading YORK INTERNATIONAL...
  • Page 70 R E V E R S E F A N “ON”: SYS 1 Liquid Line Solenoid Energized (Open). S T A T U S O F F This message informs the operator whether the revers- ing fan is active on SYS 2. YORK INTERNATIONAL...
  • Page 71 O C C U R R E D at the time of the fault. 3 : 2 4 P M 6 / 3 / 9 8 This message informs the operator of the time and date of the fault. YORK INTERNATIONAL...
  • Page 72 This message indicates SYS 2 motor current at the time S Y S O I L P R E S S U R E of the fault. P S I D This display shows the oil pressure of SYS 1 at the time of the fault. YORK INTERNATIONAL...
  • Page 73 R U N P E R M I S S I V E is installed. This message informs the operator if SYS 2 Run Per- missive (flow switch, remote START/STOP) was in the RUN mode (ON) or STOP mode (OFF). YORK INTERNATIONAL...

  • Page 74: Unit" On/Off Switch

    Any inductive load devices (relay, contactor), supplied SYSTEM SWITCHES by the user which are connected to the dry contacts, MUST be suppressed at the load. Use YORK P/N 031- SYSTEM SWITCHES 1-4 are located on the Micropro- 00808-000 suppressor (not supplied). Failure to do this cessor Board (See Fig.
  • Page 75 This is true regardless of whether the lag compressor is on or off. Manual Lead/Lag selection will be automatically overrid- den by the micro to allow the lag compressor in a mod- YORK INTERNATIONAL...
  • Page 76 Default values will also be loaded into MEMORY REGARDLESS OF WHETHER THE memory for all setpoints and cut-outs. These may re- CLOCK IS ON OR OFF AND REGARDLESS quire reprogramming to assure they meet chiller operat- OF THE LENGTH OF THE POWER FAILURE. YORK INTERNATIONAL...
  • Page 77 Anytime power is removed from the chiller for more than a user supplied YORK P/N 031-00808 suppressor. an hour, the crankcase heater should be left on for 24 hours prior to start. This can be accomplished by apply- REMOTE SETPOINT RESET ing 115VAC to the control panel.
  • Page 78 13 & 17 as a signal for any wiring other than control wiring. Additionally, if an a setpoint reset. inductive device (relay, contactor) is supplying these con- tacts, the coil of the device must be suppressed with a user supplied YORK P/N 031-00808 suppressor. YORK INTERNATIONAL...
  • Page 79 Locations of the fans and a chart showing the operation 1 & 3 5 & 7 45°F (7.2°C) 40°F (4.4°C) outlined above is shown in Fig. 27. FIG. 27 – FAN LOCATIONS For operation below 25°F (-3.9°C), a Low Ambient Kit MUST be installed. See page 89. YORK INTERNATIONAL...

  • Page 80: Compressor Capacity Control

    5 & 6 permanently loaded solenoids. In addition, the solenoids for cylinders 3 & 4 and solenoids for cylinders 7 & 8 are wired together to function as a single step of loading/unloading. FIG. 28 – COMPRESSOR UNLOADING SEQUENCE YORK INTERNATIONAL...

  • Page 81: System Startup Checklist

    ORDER #: ___________________________________ sight glass. If it is necessary to add oil, con- nect a YORK oil pump to the oil charging valve, LOCATION: __________________________________ but do not tighten the flare nut on the delivery tubing.
  • Page 82 (The tem- checks 24 hours prior to startup, the unit can be put into perature corresponding to the condensing pressure operation. from refrigerant temperature/pressure chart). YORK INTERNATIONAL...
  • Page 83 (approximately 15 minutes) between adjust- ments for the system and the thermal expansion valve to respond and return to settled operation. YORK INTERNATIONAL...
  • Page 84 At the end of the 2 minute timer, the micropro- The lag compressor remains unchanged at the cessor will check for cooling demand as well as 1st step of loading. check to see if any system safeties have been YORK INTERNATIONAL...
  • Page 85 3rd and final unload two steps to its 1st step of 3 loading steps. step, if cooling demand requires (temperature and rate control). The lead compressor remains un- changed at the 3rd step of loading. YORK INTERNATIONAL...

  • Page 86: Preventative Maintenance

    3. Check the refrigerant circuit for leaks. If a system failure occurs due to improper main- tenance during the warranty period; YORK will 4. Operating Pressures and Temperatures – Check to not be liable for costs incurred to return the sys- see that operating pressures and temperatures are tem to satisfactory operation.
  • Page 87 H. If the oil is clean and free of metal particles, refill tained. Do not evacuate for long periods of time. the compressor with YORK oil “C”. To add oil or to fill the compressor crankcase, connect the Be sure both discharge and suction stop valves delivery tube of the YORK Hand Oil Pump.

  • Page 88: Options

    NOTE: Any inductive devices (contactor/relay coil) con- If MANUAL OVERRIDE is selected, the evaporator wa- nected to these contacts must be suppressed ter pump contacts will immediately transition. with YORK P/N 031-00808 supplied by others. Otherwise, nuisance faults may occur. LD02098 LD02097 FIG.
  • Page 89 NOTE: Any inductive devices (contactor/relay coil) con- LOW AMBIENT KIT PART NUMBERS nected to these contacts must be suppressed CHILLER WITH MODEL CHILLER WITH with YORK P/N 031-00808 supplied by others. LOW NOISE NUMBER STANDARD FANS Otherwise, nuisance faults may occur. FAN OPTION...
  • Page 90 13M) and will operate the corresponding fans in the direction. These fans will remain energized until dis- forward direction whenever discharge pressure ex- charge pressure drops below 120 PSIG. ceeds 360 PSIG (2.5 mPa). These fans will stay on YORK INTERNATIONAL...
  • Page 91 Hot gas may then be fed according to the suction pressure and the pressure regulating valve setting. Once YORK INTERNATIONAL...
  • Page 92 NOTE: Hot gas should not be considered as an addi- tional step of unloading when programming the Example: 55 (12.8°C) - 10 + 10/10 = 46°F (7.8°C) number of steps of loading/unloading. LD02099 FIG. 31 – PIPING DIAGRAM YORK INTERNATIONAL...
  • Page 93 READOUT OPTION this page), however it is of little use fan cycling by discharge pressure. in areas where ambients are generally high and stan- dard temperature control of the fans provides good con- Fan cycling by discharge pressure sometimes becomes trol and maximum efficiency. YORK INTERNATIONAL...
  • Page 94 LOW AMBIENT CUTOUT 10.0 DEGF LOW PRESSURE CUTOUT 4 4 PSIG LEAD SYSTEM SYS 1 YORK recommends the field tested WEIGH-TRONIX CONTROL TYPE LCHWT COOLING RANGE 45.0 TO 47.0 DEGF IMP-24, Model 2600 printer. This is a compact low cost printer that is ideal for service work and data logging.
  • Page 95 SW. 2 ON Warranty Obtaining a Printout YORK assumes no warranty responsibility in the use of the printer. This includes damages to the printer and the A printout of current operating data may be obtained by Microprocessor Boards or chiller operation problems pressing the OPER DATA key.
  • Page 96 1. Refer to Fig. 35 and the associated parts list. Before starting installation, all of the items in the kit should be identified by comparing with Fig. 36. 27577A FIG. 35 – COMPLETE GRILLE INSTALLATION YORK INTERNATIONAL...
  • Page 97 LD02652 NOTE: Notch grilles to suit water connections FIG. 36 – WIRE GRILLE INSTALLATION and wiring harnesses...
  • Page 98 Option is installed, field adaptation will be required Installation where parts of the kits interfere. Touch up exposed metal parts to prevent rust. 1. Before starting installation, all of the items in the kit should be identified by comparing with Fig. 37a, 37b, and 37c. YORK INTERNATIONAL...
  • Page 99 LD02653 NOTE: Notch grilles to suit water connections FIG. 37A – GRILLE AND LOUVER INSTALLATION (SIDES) and wiring harnesses...
  • Page 100 FIG. 37B – LOUVER BRACKETS INSTALLATION LD02654...
  • Page 101 LD02655 FIG. 37C – GRILLE AND LOUVER INSTALLATION (FRONT AND BACK)
  • Page 102 Option is installed, field adaptation will be required lation. Before starting installation, all of the items in where parts of the kits interfere. Touch up exposed metal parts to prevent rust. 28364A FIG. 38 – COMPLETE LOUVER INSTALLATION YORK INTERNATIONAL...
  • Page 103 LD02656 FIG. 39A – LOUVER INSTALLATION (SIDES)
  • Page 104 FIG. 39B – LOUVER BRACKETS INSTALLATION LD02654...
  • Page 105 LD02657 FIG. 39C – GRILLE AND LOUVER INSTALLATION (FRONT AND BACK)

  • Page 106: Troubleshooting Chart

    3. Install louvered panels using the proper hardware and supports. Refer to Fig. 40a and 40b and the Parts List for placement of the panels and the proper hard- ware required. YORK INTERNATIONAL...
  • Page 107 LD02658 FIG. 40A – CONDENSER COIL LOUVER INSTALLATION (SIDES)
  • Page 108 LD02659 FIG. 40B – CONDENSER COIL LOUVER INSTALLATION (FRONT AND BACK)
  • Page 109 - 10VDC) applied. NOTE: The coil of the controls used for reset must be suppressed. Use YORK P/N 031-00808-000 sup- The 0 - 10VDC signal should be connected to the + and - terminals on the TB3 Terminal Block at the right of the pressor.
  • Page 110 (P1) LD02666 FIG. 41 – REMOTE RESET BOARD YORK INTERNATIONAL...
  • Page 111 J10 (SYS 2) of power supply board. 5. Defective current transformer (CT). 5. CT resistance 42-44Ω. Contact YORK Service Before Replacing Circuit Boards or C.T.s! “LOW OIL PRESS” 1. Low oil charge. 1. Oil level should be visible in either sight FAULT glass at all times.
  • Page 112 ∆T across evaporator under evaporator ∆T. Low water temperature full load conditions. shutdown 2. Check LWT cut-out point on panel. 2. Adjust if necessary, and restart unit. (See page 45). YORK INTERNATIONAL...
  • Page 113 RWT: J11-8 to J11-1 Low Compressor Oil 1. Low oil charge. 1. Oil level should be visible in either sight Level glass at all times. Add YORK “C” oil if (Particularly at necessary. start-up) 2. Excessive flood back of liquid 2.
  • Page 114 7. Replace transducer after verifying with a discharge transducer. gauge. Lack of Cooling 1. Fouled evaporator surface. 1. Contact the local YORK service represen- Effect tative. 2. Faulty compressor suction and / or 2. Contact the local YORK service represen- charge valves.

  • Page 115: Temperature Conversion Tables

    +276.8 -8.9 +60.8 +24.4 +168.8 +91.1 +196 +384.8 +58.3 +137 +278.6 -8.3 +62.6 +25.0 +170.6 +91.7 +197 +386.6 +58.9 +138 +280.4 -7.8 +64.4 +25.6 +172.4 +92.2 +198 +388.4 +59.4 +139 +282.2 -7.2 +66.2 +26.1 +174.2 +92.8 +199 +390.2 YORK INTERNATIONAL...
  • Page 116 Proud Sponsor of the 1998 U.S. Olympic Team 36USC380 P.O. Box 1592, York, Pennsylvania USA 17405-1592 Subject to change without notice. Printed in USA Copyright © by York International Corporation 1998 ALL RIGHTS RESERVED Form 150.65-NM4 (198) Supersedes: 150.65-NM2 in ERR only...

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