York YCAL0080SC Installation Operation & Maintenance
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York YCAL0080SC Installation Operation & Maintenance

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MILLENNIUM
AIR-COOLED LIQUID CHILLERS
HERMETIC SCROLL
INSTALLATION, OPERATION, MAINT.
Supersedes: 150.62-NM1 (899)
Form 150.62-NM1 (700)
YCAL0014SC - YCAL0080SC
29224(R)A
200-3-60
230-3-60
380-3-60
460-3-60
575-3-60
MODELS ONLY
Standard, Glycol & Metric Models, Combined

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Summary of Contents for York YCAL0080SC

  • Page 1 ® MILLENNIUM AIR-COOLED LIQUID CHILLERS HERMETIC SCROLL INSTALLATION, OPERATION, MAINT. Supersedes: 150.62-NM1 (899) Form 150.62-NM1 (700) YCAL0014SC - YCAL0080SC 29224(R)A 200-3-60 230-3-60 380-3-60 460-3-60 575-3-60 MODELS ONLY Standard, Glycol & Metric Models, Combined...
  • Page 2 DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. SAFETY SYMBOLS YORK INTERNATIONAL...
  • Page 3 CHANGEABILITY OF THIS DOCUMENT In complying with YORK’s policy for continuous product improvement, the informa- tion 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 Engineered Systems Service office.

  • Page 4: Table Of Contents

    SECTION WIRING DIAGRAMS ... 112 SECTION APPENDIX 1 – ISOLATORS ... 128 YORK APPLIED SYSTEMS FIELD OFFICE LISTING ... 134 TABLES MICROPANEL POWER SUPPLY ... 20 STANDARD SINGLE POINT POWER ... 21 STANDARD DUAL POINT POWER ... 22 – 23 OPTIONAL SINGLE POINT POWER ...
  • Page 5 LOW AMBIENT CONDENSER FAN CONTROL – DISCHARGE PRESSURE CONTROL ... 91 COMPRESSOR OPERATION – LOAD LIMITING ... 92 MICROBOARD BINARY INPUTS ... 97 MICROBOARD ANALOG INPUTS ... 97 MICROBOARD OUTPUTS ... 97 OUTDOOR AIR SENSOR VALUES ... 99 YORK INTERNATIONAL TABLES AND FIGURES FORM 150.62-NM1 PAGE...
  • Page 6 ELEMENTARY DIAGRAM ... 124 ELEMENTARY DIAGRAM – POWER CIRCUIT ... 126 TYPE CP 1 ... 130 TYPE CP 2 ... 130 R SPRING SEISMIC ISOLATOR ... 131 TYPE CP MOUNTING ... 132 “AEQM” SPRING-FLEX MOUNTING ... 133 TABLES/FIGURES PAGE YORK INTERNATIONAL...

  • Page 7: Product Identification Number

    EXAMPLES: BASIC MODEL NUMBER YCAL0080SC46xAA 1 2 3 4 5 6 7 8 BASE PRODUCT TYPE NOMINAL CAPACITY : YORK : Chiller Even Number: 60 HZ Nominal Tons : Air-Cooled Odd Number: 50 HZ Nominal kW : Condensing Unit : Scroll...
  • Page 8 OPTIONS MODEL NUMBER 16 17 18 19 POWER FIELD : SP Supply TB : MP Supply TB : SP Supply TB : SP NF Disconnect Switch : SP Circuit Breaker w/ Lockable Handle : Control Transformer (factory) : Power Factor Capacitor MP = Multiple Point SP = Single Point NF = Non-Fused...

  • Page 9: Refrigerant Flow Diagram

    GAS LINE DISCHARGE LINE BALL VALVE SERVICE VALVE SUCTION PRESSURE TRANSDUCER 2 OR 3 COMPRESSORS PER SYSTEM FIG. 1 – REFRIGERANT FLOW DIAGRAM YORK INTERNATIONAL (INCLUDING TEMPERATURE SENSORS & PRESSURE TRANSDUCERS) LIQUID LINE SERVICE VALVE OPTIONAL DISCHARGE PRESSURE TRANSDUCER SUCTION LINE...

  • Page 10: Section 1 Installation

    Installation To ensure warranty coverage, this equipment must be commissioned and serviced by an authorized YORK ser- vice mechanic or a qualified service person experienced in chiller instal- lation. Installation must comply with all applicable codes, particularly in regard to electrical wiring and other...
  • Page 11 Con- siderations should be made utilizing noise levels pub- lished in the YORK Engineering Guide for the specific chiller model. Sound blankets for the compressors and low sound fans are available.
  • Page 12 7. A chilled water flow switch, (either by YORK or oth- ers) MUST be installed in the leaving water piping of the cooler. There should be a straight horizontal run of at least 5 diameters on each side of the switch.
  • Page 13 To remotely start and stop the chiller, dry contacts can be wired in series with the flow switch and CTB1 - termi- nals 13 to 14. Refer to Figure 5 and unit wiring diagram. YORK INTERNATIONAL REMOTE EMERGENCY CUTOFF Immediate shutdown of the chiller can be accomplished...

  • Page 14: Standard Power Supply Wiring

    FIG. 2 – MULTI POINT POWER SUPPLY WIRING Control Panel *Circuit # 2 Micropanel CTB2 Field Unit Power Supply See electrical note 9 Flow Switch 13 14 CTB1 Field 120-1-60 Micropanel Power Supply if control transformer not supplied LD04483 YORK INTERNATIONAL...

  • Page 15: Optional Single Point Power Supply Wiring

    RESULT IN DAMAGE TO THE EVAPORATOR AND UNIT AS A RESULT OF THE CHILLED LIQUID FREEZING. Electrical Notes and Legend located on Page 18 and 19. FIG. 3 – OPTIONAL SINGLE POINT POWER SUPPLY WIRING YORK INTERNATIONAL Control Panel Micropanel CTB2...

  • Page 16: N-F Disc Sw Or Circ Bkr

    Electrical Notes and Legend located on Page 18 and 19. FIG. 4 – OPTIONAL SINGLE POINT POWER WIRING Control Panel Micropanel CTB2 Field Unit Power Supply See electrical note 9 Flow Switch 13 14 CTB1 Field 120-1-60 Micropanel Power Supply if control transformer not supplied LD04485 YORK INTERNATIONAL...

  • Page 17: Control Wiring

    POWER FROM THE UNIT, AT OR BELOW FREEZING TEMPERATURES, CAN RESULT IN DAMAGE TO THE EVAPORATOR AND UNIT AS A RESULT OF THE CHILLED LIQUID FREEZING. FIG. 5 – CONTROL WIRING YORK INTERNATIONAL CONTROL WIRING REMOTE START/STOP PWM INPUT LD03819 * Factory wired with optional transformer.
  • Page 18 This disconnect is not intended to be a Load Break Device. 9. Field Wiring by others which complies to the National Electrical Code and Local Codes. ELECTRICAL NOTES YORK INTERNATIONAL...
  • Page 19 C.B. D.E. DISC SW FACT MOUNT CB MIN NF S.P. WIRE UNIT MTD SERV SW LEGEND: Field Wiring YORK INTERNATIONAL ELECTRICAL NOTES ACROSS THE LINE START CIRCUIT BREAKER DUAL ELEMENT FUSE DISCONNECT SWITCH FACTORY MOUNTED CIRCUIT BREAKER FULL LOAD AMPS...

  • Page 20: Electrical Data

    NOTE A 115-1-60/50 200-1-60 230-1-60 380-1-60 460-1-60 575-1-60 SEE NOTE B NF DISC Sw 30 A / 240V 30 A / 240V 30 A / 240V 30 A / 480V 30 A / 480V 30 A / 600V YORK INTERNATIONAL...

  • Page 21: Standard Single Point Power

    0024SC 60 140 60 130 0030SC 60 183 60 170 0034SC 60 103 See notes and legend on pages 18 and 19. YORK INTERNATIONAL INCOMING CKT. BKR. COMPR. #1 WIRE MIN MAX RANGE # 4 - # 1 26.0 # 4 - # 1 24.1...

  • Page 22: Standard Dual Point Power

    60 208 60 193 0074SC 60 113 60 207 60 192 0080SC 60 112 See notes and legend on pages 18 and 19. YCAL0040SC - YCAL0080SC INCOMING CKT. BKR. COMPR. #1 WIRE MIN MAX RANGE # 2 - 1/0 32.9 # 4 - # 1 30.5...
  • Page 23 ELECTRICAL DATA – STANDARD DUAL POINT POWER YCAL0040SC - YCAL0080SC SYSTEM #2 FIELD SUPPLIED WIRING MIN N/F D.E. FUSE CKT. BRK. DISC SW YORK INTERNATIONAL SYSTEM #2 COMPRESSOR & FAN INCOMING COMPR. #1 WIRE RANGE # 2 - 1/0 32.9 # 4 - # 1 30.5...

  • Page 24: Optional Single Point Power

    3/0 - 250 3/0 - 250 2/0 - 4/0 2/0 - 4/0 # 2 - 1/0 # 2 - 1/0 # 4 - # 1 # 4 - # 1 # 4 - # 1 # 4 - # 1 YORK INTERNATIONAL...
  • Page 25 54.7 54.7 — — 50.7 50.7 — — 28.7 28.7 — — 24.1 24.1 — — 19.3 19.3 — — 51.2 51.2 51.2 47.4 47.4 47.4 28.7 28.7 28.7 22.6 22.6 22.6 YORK INTERNATIONAL FANS QTY FLA (EA) FORM 150.62-NM1...

  • Page 26: Optional Single Point Power

    250 - 350 250 - 350 1/0 - 3/0 1/0 - 3/0 1/0 - 3/0 # 1 - 2/0 # 1 - 2/0 # 1 - 2/0 # 2 - 1/0 # 2 - 1/0 # 2 - 1/0 YORK INTERNATIONAL...
  • Page 27 50.9 50.9 — — 29.6 29.6 — — 24.2 24.2 — — 19.4 19.4 — — YORK INTERNATIONAL SYSTEM #2 COMPRESSOR & FAN FANS COMPR. #1 COMPR. #2 FLA (EA) 32.9 32.9 30.5 30.5 19.4 19.4 14.5 14.5 11.6 11.6 50.2...

  • Page 28: Optional Single Point Power

    Installation ELECTRICAL DATA – OPTIONAL SINGLE POINT POWER YCAL0064SC - YCAL0080SC TABLE 6 – OPTIONAL SINGLE POINT POWER MODEL VOLT YCAL DISC SW 0064SC 0070SC 0074SC 0080SC See notes and legend on pages 18 and 19. SINGLE POINT FIELD SUPPLIED WIRING D.E.
  • Page 29 ELECTRICAL DATA – OPTIONAL SINGLE POINT POWER YCAL0064SC - YCAL0080SC SYSTEM #1 COMPRESSOR & FAN COMPR. #1 COMPR. #2 COMPR. #3 52.4 52.4 52.4 48.6 48.6 48.6 29.3 29.3 29.3 23.1 23.1 23.1 18.5 18.5 18.5 51.8 51.8 51.8 48.0 48.0...

  • Page 30: Operational Limitations

    1. Standard units cannot be operated below 40°F leaving chilled water temperature. 2. For leaving water temperature higher than 55°F, contact the nearest YORK Office for application guidelines. 3. The evaporator is protected against freeze-up to -20.0°F with an electrical heater as standard.

  • Page 31: Ethylene Glycol Correction Factors

    MODEL YCAL00 COOLER CURVE 14SC, 20SC, 24SC 30SC 34SC 40SC, 44SC, 50SC, 60SC 64SC, 70SC, 74SC 80SC YORK INTERNATIONAL Cooler Pressure Drop YCAL0030 Flow, GPM Cooler Pressure Drop YCAL0034 Flow, GPM TABLE 10 – ETHYLENE GLYCOL CORRECTION FACTORS % WT...
  • Page 32 1. Standard units cannot be operated below 4.4°C leaving chilled water temperature. 2. For leaving water temperature higher than 12.8°C, contact the nearest YORK Office for application guidelines. 3. The evaporator is protected against freeze-up to -28.9°C with an electrical heater as standard.

  • Page 33: Ethylene Glycol Correction Factors

    MODEL YCAL00 COOLER CURVE 14SC, 20SC, 24SC, 30SC 34SC 40SC, 44SC, 50SC, 60SC 64SC, 70SC, 74SC, 80SC YORK INTERNATIONAL Cooler Press. Drop YCAL0030 Flow l/s Cooler Pressure Drop YCAL0034 Flow l/s TABLE 14 – ETHYLENE GLYCOL CORRECTION % WT ETHYLE-...

  • Page 34: Physical Data

    Installation PHYSICAL DATA (ENGLISH) YCAL0014SC - YCAL0080SC TABLE 15 – PHYSICAL DATA (ENGLISH) Model YCAL00 Nominal Tons Number of Refrigerant Circuits Compressors per circuit Compressors per unit Condenser Total Face Area ft Number of Rows Fins per Inch Condenser Fans...

  • Page 35: Physical Data (English)

    PHYSICAL DATA (ENGLISH) YCAL0014SC - YCAL0080SC 50SC 60SC 64SC 70SC 49.9 54.0 62.4 69.4 128.0 128.0 149.3 149.3 2 / 1.4 2 / 1.4 2 / 1.7 2 / 1.7 1140 1140 1140 1140 47360 46080 55253 55253 11"x8' 11"x8' 14"x8'...
  • Page 36 Installation YCAL0014SC - YCAL0080SC TABLE 16 – PHYSICAL DATA (METRIC) Model YCAL00 Nominal kW Number of Refrigerant Circuits Compressors per circuit Compressors per unit Condenser Total Face Area meters Number of Rows Fins per mm Condenser Fans Number of Fans total...

  • Page 37: Physical Data (Metric)

    YCAL0014SC - YCAL0080SC 50SC 60SC 64SC 177.1 191.6 221.3 2 / 1.4 2 / 1.4 2 / 1.7 1140 1140 1140 22351 21747 26076 279x2438 279x2438 356x2438 1950 2085 2362 2126 2393 2601 2059 2194 2495 2235 2502 2735 27/25...
  • Page 38 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation.
  • Page 39 YCAL0014SC - YCAL0020SC TABLE 17 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY MODEL WEIGHT DISTRIBUTION YCAL00 14SC 20SC YORK INTERNATIONAL DIMENSIONS (ENGLISH) TOTAL 2225 2241 FORM 150.62-NM1 LD03847 CENTER OF GRAVITY 50.1 25.8 23.3 50.2 25.9 23.2...
  • Page 40 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation.
  • Page 41 YCAL0024SC - YCAL0034SC TABLE 18 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY MODEL WEIGHT DISTRIBUTION YCAL00 24SC 30SC 34SC YORK INTERNATIONAL DIMENSIONS (ENGLISH) TOTAL 2435 2647 3129 FORM 150.62-NM1 LD03845 CENTER OF GRAVITY 50.6 25.9 28.5 50.6 25.8 28.9 48.0 25.4 26.9...
  • Page 42 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation.
  • Page 43 TABLE 19 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY MODEL WEIGHT DISTRIBUTION YCAL00 40SC 1110 1071 44SC 1133 1098 50SC 1151 1119 60SC 1217 1201 YORK INTERNATIONAL DIMENSIONS (ENGLISH) TOTAL 1110 1071 4363 1133 1098 4462 1151 1119 4540 1217 1201 4836 FORM 150.62-NM1...
  • Page 44 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation.
  • Page 45 YCAL0064SC - YCAL0080SC TABLE 20 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY MODEL WEIGHT DISTRIBUTION YCAL00 64SC 1463 1288 70SC 1492 1315 74SC 1551 1380 80SC 1620 1444 YORK INTERNATIONAL DIMENSIONS (ENGLISH) TOTAL 1463 1288 5501 1492 1315 5616 1551 1380 5863...
  • Page 46 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation.
  • Page 47 YCAL0014SC - YCAL0020SC All dimensions in millimeters unless otherwise noted. TABLE 21 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY MODEL WEIGHT DISTRIBUTION (kg) YCAL00 14SC 20SC YORK INTERNATIONAL DIMENSIONS (METRIC) TOTAL 1009 1016 FORM 150.62-NM1 LD03853 CENTER OF GRAVITY (mm) 1273 1275...
  • Page 48 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation.
  • Page 49 YCAL0024SC - YCAL0034SC All dimensions in millimeters unless otherwise noted. TABLE 22 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY MODEL WEIGHT DISTRIBUTION YCAL00 24SC 30SC 34SC YORK INTERNATIONAL DIMENSIONS (METRIC) TOTAL 1104 1201 1414 FORM 150.62-NM1 LD03855 CENTER OF GRAVITY 1285 1285...
  • Page 50 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation.
  • Page 51 YCAL0040SC - YCAL0060SC All dimensions in millimeters unless otherwise noted. TABLE 23 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY MODEL WEIGHT DISTRIBUTION YCAL00 40SC 44SC 50SC 60SC YORK INTERNATIONAL DIMENSIONS (METRIC) TOTAL 1979 2024 2059 2194 FORM 150.62-NM1 LD03857 CENTER OF GRAVITY...
  • Page 52 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation.
  • Page 53 YCAL0064SC - YCAL0080SC All dimensions in millimeters unless otherwise noted. TABLE 24 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY MODEL WEIGHT DISTRIBUTION YCAL00 64SC 70SC 74SC 80SC YORK INTERNATIONAL DIMENSIONS (METRIC) TOTAL 2495 2547 2659 2780 FORM 150.62-NM1 LD03859 CENTER OF GRAVITY...

  • Page 54: Pre-Startup Checklist

    COOLING SETPOINTS Cooling Setpoint Range EMS-PWM Max. Setpoint PROGRAM Discharge Pressure Cutout Suct. Pressure Cutout Low Amb. Temp. Cutout Leaving Liquid Temp. Cutout Anti-Recycle Time Fan Control On-Pressure Fan Differential Off-Pressure Total # of Compressors coated with heat conduc- YORK INTERNATIONAL...

  • Page 55: Initial Startup

    After verifying proper compressor rotation, turn the Unit Switch to “OFF.” YORK INTERNATIONAL The chilled liquid setpoint may need to be temporarily lowered to ensure all compressors cycle “on.”...
  • Page 56 G 1. Leak check compressors, fittings, and piping to assure no leaks. If the unit is functioning satisfactorily during the initial operating period, no safeties trip and the compressors cycle to control water temperature to setpoint, the chiller is ready to be placed into operation. YORK INTERNATIONAL...

  • Page 57: Unit Operating Sequence

    4. Several seconds after the compressor starts, that systems first condenser fan will be cycled on (out- YORK INTERNATIONAL door air temperature > 25°F (-4°C)). See the section on Operating Controls for details concerning con- denser fan cycling.

  • Page 58: Section 2 Unit Controls

    Unit Controls YORK MILLENNIUM CONTROL CENTER INTRODUCTION The YORK MicroComputer Control Center is a micro- processor based control system designed to provide the entire control for the liquid chiller. The control logic em- bedded in the microprocessor based control system will...
  • Page 59 “greater than” (>) or “less than” (<). These characters indicate the actual values are greater than or less than the limit values which are being displayed. YORK INTERNATIONAL KEYPAD The 12 button non-tactile keypad allows the user to re- trieve vitals system parameters such as system pres-...
  • Page 60 S C H E D U L E S H U T D O W N S W I T C H / R E M S T O P P E R M I S S I V E YORK INTERNATIONAL...
  • Page 61 The anti-recycle timer message shows the amount of time left on the respective systems anti-recycle timer. This message is displayed when the system is unable to start due the anti-recycle timer being active. YORK INTERNATIONAL O F F S Y S O F F...
  • Page 62 This condition is then a manual reset. The system switch (under OPTIONS key) must be turned off and then back on to clear the lockout fault. D O W N D O W N YORK INTERNATIONAL...
  • Page 63 After the first 3 minutes, if the suction pressure falls below the programmed cutout setting, a “transient pro- tection routine” is activated. This sets the cutout at 10% YORK INTERNATIONAL of the programmed value and ramps up the cutout over P R E S the next 30 seconds.
  • Page 64 The RTC/battery is located at U17 on the microboard. B A T T E R Y P R O G / S E T P / O P T N YORK INTERNATIONAL...

  • Page 65: Status Key

    System X AC Timer System X Disch Limiting System X Suction Limiting System X Percentage Load Limiting Manual Overide Status System X Pumping Down (on shutdown) YORK INTERNATIONAL STATUS KEY MESSAGES STATUS KEY MESSAGES Fault Messages System Safeties System X High Disch Pressure...

  • Page 66: Display/Print Keys

    0.4°F (-17.6°C).The maximum limit on the display is 131.2°F (55.1°C). 00067VIP 4 6 . 2 ° F 5 7 . 4 ° F A I R T E M P 8 7 . 5 ° F YORK INTERNATIONAL...
  • Page 67 The first display shows accumulated run- ning hours of each compressor for the specific system. The second message shows the number of starts for each compressor on each system. YORK INTERNATIONAL P S I G L O A D T I M E R...
  • Page 68 R U N N I N G R U N T I M E D - H - M - S L L S V S O L O F F F A N S T A G E YORK INTERNATIONAL...
  • Page 69 OPER DATA key. TABLE 27 – OPERATION DATA Evaporator Pump Contacts & Heater Status * Block of information repeats for each system YORK INTERNATIONAL Oper Data Key Leaving & Chilled Liquid Temps Ambient Air Temperature System 1 Discharge & Suction Pressure System 2 Discharge &...
  • Page 70 “instant of the fault” on the last six faults which occurred on the unit. An optional printer is re- quired for the printout. YORK INTERNATIONAL CORPORATION MILLENNIUM LIQUID CHILLER UNIT STATUS 2:04PM 01 JAN 99...
  • Page 71 The difference is that the Daily Schedule is not printed in the history print and the header will be as shown below. YORK INTERNATIONAL YORK INTERNATIONAL CORPORATION MILLENNIUM LIQUID CHILLER SAFETY SHUTDOWN NUMBER 1 SHUTDOWN @ 3:56PM...
  • Page 72 P S I G X X X X P S I G L L S V X X X G A S S O L X X X F A N S T A G E X X X YORK INTERNATIONAL...

  • Page 73: "Entry" Keys

    UP and DOWN arrow keys. The UP and DOWN arrow keys are also used for pro- gramming the control panel such as changing cooling YORK INTERNATIONAL “ENTRY” KEYS setpoints, setting the daily schedule, changing safety setpoints, chiller options, and setting the clock.

  • Page 74: Setpoints Key

    00069IP L E A V I N G T E M P C O N T R O L R E T U R N T E M P C O N T R O L YORK INTERNATIONAL...
  • Page 75 5). Pressing either the UP or DOWN arrow will change the setpoint in .5°F increments. YORK INTERNATIONAL After using the UP and DOWN arrows to adjust to the desired setpoint, the ENTER/ADV key must be pressed to enter this number into memory and advance to the RANGE SETPOINT.

  • Page 76: Cooling Setpoints Programmable Limits & Defaults

    30°F (-1.1°C). When using glycol, Leaving Chilled Liquid Setpoint should not be set below 20°F (-6.7°C). ** Do not exceed 55°F (12.8°C) setpoint before contacting the nearest York Office for application guidelines. Pressing the COOLING SETPOINTS a third time will bring up the display that allows the Maximum EMS- PWM Temperature Reset to be programmed.
  • Page 77 YORK INTERNATIONAL To page to a specific day press the SCHEDULE/ AD- VANCE DAY key. The start and stop time of each day may be programmed differently using the UP and DOWN arrow, and ENTER/ADV keys.
  • Page 78 2 5 . 0 ° F L I Q U I D T E M P 3 6 . 0 ° F R E C Y C L E T I M E 6 0 0 S E C YORK INTERNATIONAL...

  • Page 79: Program Key Limits & Defaults

    FAN CONTROL ON-PRESSURE FAN DIFFERENTIAL OFF-PRESSURE TOTAL NUMBER OF COMPRESSORS YORK INTERNATIONAL F A N D I F F E R E N T I A L P R E S S U R E = X X X P S I G...
  • Page 80 Mon. – Sun. & Holiday Schedule Program Mode (press enter to adv.) Discharge Pressure Cutout Suction Pressure Cutout Low Ambient Temp. Cutout Leaving Liquid Temperature Cutout Anti-Recycle Timer Fan Control On-Pressure Fan Differential Off-Pressure Total Numbers Compressors LD03685 YORK INTERNATIONAL...

  • Page 81: Unit Keys

    This allows both systems to run S Y S S W I T C H S Y S S W I T C H YORK INTERNATIONAL “UNIT” KEYS This keeps system 2 off S Y S S Y S This keeps system 1 off Option 3 –...
  • Page 82 Refer to section on Capacity Control for details on load- ing and unloading sequences. M O D E R E M O T E M O D E L I Q U I D M O D E L I Q U I D YORK INTERNATIONAL...
  • Page 83 C O N T R O L A M B I E N T & D S C H YORK INTERNATIONAL Condenser fans are controlled by ambient tem ure and discharge pressure. This mode must be cho- sen if the discharge pressure transducers are not in- stalled, or if the fan cycling is a concern.

  • Page 84: Unit Keys

    System Switches on/off Unit Type Chilled Liquid Type (water or glycol) Ambient Control (standard or low) Local/Remote Mode Unit Control Mode (Based on Unit Type) Display Units (English or Metric) Lead/Lag Control Fan Control Mode Override Mode LD03686 Clock YORK INTERNATIONAL...

  • Page 85: Unit Operation

    Setpoint plus the Cooling Range. The Setpoint Low Limit is the Setpoint minus the Cooling Range. See Fig- ure 6. YORK INTERNATIONAL UNIT OPERATION If the leaving chilled liquid temperature is above the Setpoint High Limit, the lead compressor on the lead system will be energized along with the liquid line sole- noid.

  • Page 86: Leaving Water Temperature Control

    SEE NOTE 2 SEE NOTE 3 COMP 2 SEE NOTE 1 SEE NOTE 2 SEE NOTE 3 60 sec. loading 48.0° (8.9°C) High limit LAG SYSTEM COMP 1 COMP 2 COMP 3 LAG SYSTEM COMP 1 COMP 2 YORK INTERNATIONAL...
  • Page 87 2. Step 3 is skipped when loading occurs. 3. Step 4 is skipped when unloading occurs. * STEP can be viewed using the OPER DATA key and scrolling to COOLING DEMAND. YORK INTERNATIONAL COMP 3 SEE NOTE 1 SEE NOTE 1...
  • Page 88 The “STEP” is that sequence in the ca- pacity control scheme that can be viewed under the OPER DATA key. Please refer to the section on the DIS- PLAY/PRINT keys for specific information on the OPER DATA key. YORK INTERNATIONAL...

  • Page 89: Compressor Staging For Return Water Control

    1. Step 1 is Hot Gas Bypass and is skipped when loading occurs. Hot Gas Bypass operation is inhibited during Pumpdown. 2. Step 3 is skipped when loading occurs. 3. Step 4 is skipped when unloading occurs. * STEP can be viewed using the OPER DATA key and scrolling to COOLING DEMAND. YORK INTERNATIONAL 6 Compressors 46.7°F 48.3°F 50.0°F...

  • Page 90: Condenser Fan Control Using Outdoor Ambient

    DP > ctrl_press OAT >45° F (7.2°C) DP < ctrl_press - diff_press + 20 PSIG (1.38 Bars) DP > ctrl_press OAT < 20° F (-6.7°C) DP < ctrl_press - diff_press OAT < 40° F (4.4°C) DP < ctrl_press - diff_press YORK INTERNATIONAL...

  • Page 91: Low Ambient Condenser Fan Control - Ambient

    DP > ctrl_press + 20 PSIG (1.38 Bars) 2 FANS FWD DP > ctrl_press + 40 PSIG (2.76 Bars) YORK INTERNATIONAL Again, notice that condenser fan operation can be pro- grammed for either “temperature and discharge pres- sure control,” or “discharge pressure control only” as described under Condenser Fan Control.

  • Page 92: Compressor Operation - Load Limiting

    When the system has to load, the next compressor to start will be the one with the least run time that is currently not running in that system. STAGE 1 STAGE 2 YORK INTERNATIONAL – –...
  • Page 93 * Max Reset Value is the “Max EMS-PWM Remote Temp. Reset” setpoint value described in the programming section under Cooling Setpoints. Programmable values are from 2°F to 40°F (1.11°C to 22.22°C). YORK INTERNATIONAL BAS/EMS TEMPERATURE RESET OPTION The Remote Reset Option allows the Control Center of the unit to reset the chilled liquid setpoint using a 0 - 10 VDC input, a 4-20mA input, or a contact closure input.
  • Page 94 “Max EMS-PWM Remote Temp. Reset” setpoint value programmed in the SETPOINTS section under the Cooling Setpoints key. NOTE: The coil of any added relay used for reset must be suppressed to prevent possible component damage. Use YORK PN031-00808-000 suppressor. 035-15961-000 035-15961-000 LD03875...

  • Page 95: Section 3 Service And Troubleshooting

    Using the UP/DOWN ARROW keys will turn the respective digital output on/off. YORK INTERNATIONAL Following is the order of digital outputs that will appear as the ENTER/ADV key is pressed:\ SYS 1 COMPRESSOR 1...
  • Page 96 Table 46 lists the con- nection points for the outputs. All input and output con- nections pertain to the connections at the microboard. Figure 8 illustrates the physical connections on the mi- croboard. YORK INTERNATIONAL J 4 - 1 0 P S I G...

  • Page 97: Microboard Binary Inputs

    Sys 2 Ground Fault Circuit The 30 dc unregulated supply is not an input. This voltage originates on the microboard and is used to supply the contacts for the binary inputs. YORK INTERNATIONAL TABLE 46 – MICROBOARD OUTPUTS TB3-2 SYSTEM 1 COMPRESSOR 1...

  • Page 98: Microboard Layout

    Service and Troubleshooting CLOCK ON/OFF JUMPER FIG. 8 – MICROBOARD LAYOUT 00071VIP YORK INTERNATIONAL...
  • Page 99 J6-7 = VDC input signal to the microboard. See Table 47 for voltage readings that correspond to specific outdoor temperatures. J6-1 = drain (shield connection = 0VDC) YORK INTERNATIONAL TABLE 47 – OUTDOOR AIR SENSOR TEMPERATURE/VOLTAGE/ RESISTANCE CORRELATION TEMP °F...
  • Page 100 Leaving Chilled Liquid Temp. Sensor J6-5 = +5VDC regulated supply to sensor. J6-8 = VDC input signal to the microboard. See Table 48 for voltage readings that correspond to specific liquid temperatures. J6-2 = drain (shield connection = 0VDC) YORK INTERNATIONAL...
  • Page 101 All voltage reading are in reference to ground (unit case). YORK INTERNATIONAL V = (Pressure in PSIG x .01) + .5 V = (Pressure in BARG x .145) + .5...
  • Page 102 120VAC to the respective output connection energizing contactors, evap. heater, and solenoids ac- cording to the operating sequence. 120 vac is supplied to the microboard via connections at TB3-1, TB3-7, TB4-3, and TB4-7. Figure 9 illustrates the relay contact architecture on the microboard. YORK INTERNATIONAL...

  • Page 103: Keypad Pin Assignment Matrix

    The integrity of a specific “button” on the keypad can be verified by doing a continuity check across two specific YORK INTERNATIONAL points (or pins), that represent one of twelve “buttons” on the keypad. Table 49 lists the key/pin assignments for the keypad.

  • Page 104: Optional Printer Installation

    (International Orders Only) The part number for the printer that is packaged specifi- cally for YORK is P/N 950915576. The cable to connect the printer can either be locally assembled from the parts listed, or ordered directly from WEIGH-TRONIX under part number 287-040018.

  • Page 105: Troubleshooting

    2. Check wiring 1T to Microboard. 3. Replace 1T 4. Unplug connections at Microboard to isolate. 5. Replace Microboard. NOTE: Contact YORK Service before Replacing circuit Boards! 1. Check chilled liquid flow. 2. Check that the flow switch is installed according to manufacturer’s...
  • Page 106 2. Re-adjust setpoint/range. 3. Increase chilled liquid flow – refer to Limitations in Instal- lation section. 4. Compare sensor against a known good temperature sensing device. Refer to Service section for temp/ voltage table. CONT’D YORK INTERNATIONAL...
  • Page 107 Service section for RWT/ LWT temp./voltage table. 3. Replace defective part. 4. Diagnose cause of failure and replace. 1. Contact the local YORK service representative. 2. Reduce flow to within chiller design specs. See Limita- tions in Installation section.

  • Page 108: Maintenance

    1/4 and 3/4 in the oil sight glass. Note: at shutdown, the oil level can fall to the bottom limit of the oil sight glass. Use YORK “F” oil when adding oil. Oil Analysis: The oil used in these compressors is pale yellow in color (mineral oil).

  • Page 109: Isn Control

    54. If there is no value to be sent to a particular page, a zero will be sent. Tables 52 - 53 show the data values and page listings for this unit. YORK INTERNATIONAL ISN CONTROL TABLE 52 – ISN TRANSMITTED DATA...

  • Page 110: Isn Transmitted Data

    LEAVING CHILLED LIQUID ANALOG TEMP CUTOUT ANALOG LOW AMBIENT TEMP CUTOUT ANALOG — ANALOG LOW SUCTION PRESS CUTOUT HIGH DISCHARGE PRESS ANALOG CUTOUT ANALOG SETPOINT ANALOG COOLING RANGE SETPOINT 2 ANALOG (SP CONTROL) NO DATA P75-P84 — ALL ZEROS YORK INTERNATIONAL...

  • Page 111: Operational And Fault Codes

    ANTI-COINCIDENCE TIMER ACTIVE ANTI-RECYCLE TIMER ACTIVE MANUAL OVERRIDE SUCTION LIMITING DISCHARGE LIMITING CURRENT LIMITING LOAD LIMITING COMPRESSOR(S) RUNNING YORK INTERNATIONAL FORM 150.62-NM1 P57/59 FAULT CODE NO FAULT VAC UNDERVOLTAGE LOW AMBIENT TEMPERATURE HIGH AMBIENT TEMPERATURE LOW LEAVING CHILLED LIQUID TEMP...

  • Page 112: Section 4 Wiring Diagrams

    Wiring Diagrams ELEMENTARY DIAGRAM YCAL0014SC – YCAL0030SC FIG. 11 – ELEMENTARY DIAGRAM YORK INTERNATIONAL...
  • Page 113 FORM 150.62-NM1 ELEMENTARY DIAGRAM YCAL0014SC – YCAL0030SC FIG. 11 – ELEMENTARY DIAGRAM (Cont’d) YORK INTERNATIONAL...
  • Page 114 Wiring Diagrams ELEMENTARY DIAGRAM YCAL0014SC – YCAL0030SC LD03532 FIG. 12 – ELEMENTARY DIAGRAM YORK INTERNATIONAL...
  • Page 115 FORM 150.62-NM1 This page intentionally left blank. YORK INTERNATIONAL...

  • Page 116: Elementary Diagram

    Wiring Diagrams ELEMENTARY DIAGRAM YCAL0034SC FIG. 13 – ELEMENTARY DIAGRAM YORK INTERNATIONAL...
  • Page 117 FORM 150.62-NM1 ELEMENTARY DIAGRAM YCAL0034SC FIG. 13 – ELEMENTARY DIAGRAM (Cont’d) YORK INTERNATIONAL...
  • Page 118 Wiring Diagrams ELEMENTARY DIAGRAM YCAL0034SC LD03534 FIG. 14 – ELEMENTARY DIAGRAM YORK INTERNATIONAL...
  • Page 119 FORM 150.62-NM1 This page intentionally left blank. YORK INTERNATIONAL...

  • Page 120: Elementary Diagram

    Wiring Diagrams ELEMENTARY DIAGRAM YCAL0040SC – YCAL0060SC FIG. 15 – ELEMENTARY DIAGRAM YORK INTERNATIONAL...
  • Page 121 FORM 150.62-NM1 ELEMENTARY DIAGRAM YCAL0040SC – YCAL0060SC FIG. 15 – ELEMENTARY DIAGRAM (Cont’d) YORK INTERNATIONAL...
  • Page 122 Wiring Diagrams ELEMENTARY DIAGRAM YCAL0040SC – YCAL0060SC FIG. 16 – ELEMENTARY DIAGRAM YORK INTERNATIONAL...
  • Page 123 FORM 150.62-NM1 ELEMENTARY DIAGRAM YCAL0040SC – YCAL0060SC FIG. 16 – ELEMENTARY DIAGRAM (Cont’d) YORK INTERNATIONAL...

  • Page 124: Elementary Diagram

    Wiring Diagrams ELEMENTARY DIAGRAM YCAL0064SC – YCAL0080SC FIG. 17 – ELEMENTARY DIAGRAM YORK INTERNATIONAL...
  • Page 125 FORM 150.62-NM1 ELEMENTARY DIAGRAM YCAL0064SC – YCAL0080SC FIG. 17 – ELEMENTARY DIAGRAM (Cont’d) YORK INTERNATIONAL...
  • Page 126 Wiring Diagrams ELEMENTARY DIAGRAM YCAL0064SC – YCAL0080SC FIG. 18 – ELEMENTARY DIAGRAM YORK INTERNATIONAL...
  • Page 127 FORM 150.62-NM1 ELEMENTARY DIAGRAM YCAL0064SC – YCAL0080SC FIG. 18 – ELEMENTARY DIAGRAM (Cont’d) YORK INTERNATIONAL...

  • Page 128: Section 5 Appendix 1 – Isolators

    AEQM-97 AEQM-97 AEQM-97 AEQM-97 AEQM-97 AEQM-98 AEQM-97 AEQM-98 AEQM-98 AEQM-1600 AEQM-1300 AEQM-1600 AEQM-1300 AEQM-1600 AEQM-1600 AEQM-1600 AEQM-1600 AEQM-1625 AEQM-1600 AEQM-1625 AEQM-1600 AEQM-1625 AEQM-1625 AEQM-1625 AEQM-1625 SEISMIC PART # COLOR 301055-97 WHITE 301055-98 GRAY 301060-1300 YELLOW 301060-1600 GRAY 301060-1625 YORK INTERNATIONAL...
  • Page 129 Refer to Dimensions for Weight Distribution Point Location A – D ISOLATOR SPRING IDENTIFICATION TABLE 1" DEFLECTION MODEL PART- # CP-1-27 308439-27 CP-1-28 308439-28 CP-2-27 308692-27 CP-2-28 308692-28 CP-2-31 308692-31 YORK INTERNATIONAL APPENDIX 1 (COPPER FINS) CP-1-27 CP-1-27 CP-1-27 CP-1-28 CP-1-28 CP-2-27 CP-2-27 CP-2-27 CP-2-28 CP-2-28 CP-2-28 CP-2-31...
  • Page 130 Appendix 1 – Isolators APPENDIX 1 (DIMENSIONS) LD03839 FIG. 19 – TYPE CP 1 LD03840 FIG. 20 – TYPE CP 2...

  • Page 131: R Spring Seismic Isolator

    MODEL # AEQM-97 AEQM-98 AEQM-99 AEQM-1000 8-½ AEQM-1300 8-½ AEQM-1600 8-½ AEQM-1625 8-½ AEQM-1628 8-½ FIG. 21 – R SPRING SEISMIC ISOLATORS APPENDIX 1 (DIMENSIONS) 5-½ 4-½ 2-½ 5-½ 4-½ 2-½ 5-½ 4-½ 2-½ 6-½ 4-½ ¾ 6-½ 4-½ ¾ 6-½...

  • Page 132: Type Cp Mounting

    7. Level the machine by taking additional turns on all mounts at the low side. Clearance should not ex- ceed 1/2" - greater clearance indicates that mount- ings were not all installed at the same elevation, and shims are required. This completes adjustment. LD03837 YORK INTERNATIONAL...

  • Page 133: Aeqm" Spring-Flex Mounting

    4. Anchor all isolators to floor or subbase as required. For installing on concrete VMC recommends HILTI type HSL heavy duty anchors or equal. FIG. 23 – “AEQM” SPRING-FLEX MOUNTING YORK INTERNATIONAL APPENDIX 1 “AEQM” SPRING-FLEX MOUNTING 5. Remove cap screw “C” and save. Gently place ma- chine or machine base on top of bolt “B”.
  • Page 134 Louisville YORK International Corp. (502) 499-6020 CANADA Ottawa, Ontario (613) 596-9111 YORK Applied Systems field office listing subject to change. See us on the web at http://www.york.com for additional information. LOUISIANA New Orleans YORK International Corp. (504) 464-6941 MARYLAND Baltimore/Washington YORK International Corp.
  • Page 135 FORM 150.62-NM1 This page intentionally left blank. YORK INTERNATIONAL...
  • Page 136 Tele. 800-851-1001 P.O. Box 1592, York, Pennsylvania USA 17405-1592 Subject to change without notice. Printed in USA www.york.com Copyright © by York International Corporation 2000 ALL RIGHTS RESERVED Form 150.62-NM1 (700) Supersedes: 150.62-NM1 (899) 150.62-NM1 (399)

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