Name: York YDAJ87KU6
Brand: York
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INSTALL., OPER., MAINT.

RecipPak LIQUID CHILLERS

AIR COOLED  RECIPROCATING HERMETIC

Supersedes: See Back

Form 150.75-NM2 (196)

60 HZ MODELS

YDAJ87KU6, YDAJ88MU6, YDAJ99MW6

50 HZ MODELS

YDAJ87HU7, YDAJ97KU7, YDAJ98MU7,

YDAJ99MU7, YDAJ99MW9

STYLE A*

370 - 450 TONS

00022TG

*With EPROMs 031-01096-009 & 031-01300-002 (Standard, Brine & Metric Models, Combined)

MASTER SLAVE

200, 230, 460-3-60

Unit shown with optional

Decorative Tamperproof Enclosure

150.75-NM2 (196)1
RecipPak LIQUID CHILLERS AIR COOLED - RECIPROCATING HERMETIC1
INSTALL., OPER., MAINT.1
60 HZ MODELS YDAJ87KU6, YDAJ88MU6, YDAJ99MW61
50 HZ MODELS YDAJ87HU7, YDAJ97KU7, YDAJ98MU7, YDAJ99MU7, YDAJ98MU71
STYLE A*1
370 - 450 TONS1
TABLE OF CONTENTS2
GENERAL INFORMATION2
- GENERAL DESCRIPTION2
- CODE STATUS2
UNIT NOMENCLATURE3
FIG. 1 – UNIT COMPONENTS (Typical on each of the two modules)4
FIG. 1 – UNIT COMPONENTS (Cont’d)5
COMPRESSOR TERMINAL BOX6
6 CYLINDER MODEL J "G" COMPRESSOR6
FIG. 2 – COMPRESSOR COMPONENTS6
OPERATIONAL LIMITATIONS7
- VOLTAGE LIMITATIONS7
- VOLTAGES7
- TEMPERATURES AND FLOWS7
- FIG. 3 – COOLER WATER PRESSURE DROP7
PHYSICAL DATA8
DIMENSIONS9
- WEIGHT DISTRIBUTION (LB.)9
- CAUTION9
- NOTES:9
ELECTRICAL DATA10
- CONTROL POWER SUPPLY11
FIG. 4 – RIGGING THE CHILLER (Each section)12
INSTALLATION12
- WARRANTY12
- INSTALLATION CHECK LIST12
- HANDLING12
- INSPECTION12
- LOCATION AND CLEARANCES12
- FOUNDATION12
  - Ground Level Locations12
  - Rooftop Locations13
- SHIPPING BRACES13
- MODULAR INSTALLATION13
- COMMUNICATIONS LINK INSTALLATION13
  - Procedure #113
  - Procedure #214
- MIXED WATER TEMP. SENSOR INSTALLATION14
- FIG. 5 – SPLICING KIT13
- FIG. 6 – RS-485 WIRING CONNECTION13
- FIG. 7A – TRANSIENT PROTECTION CIRCUIT BOARD (LTP) INSTALLED IN SLAVE PANEL14
- FIG. 7B – TRANSIENT PROTECTION CIRCUIT BOARD (LTP) INSTALLED IN MASTER PANEL14
- FIG. 8 – COMMUNICATIONS CABLE CONNECTION14
- FIG. 9 – MIXED WATER TEMP WIRING CONNECTOR INSTALLATION15
- “MIXED WATER TEMP”, “SYS 1 & 2 PRESSURES” AND "SYS 3 & 4" PRESSURES" LABEL INSTALLATION15
- COMPRESSOR MOUNTING15
- COMPRESSOR INSULATION15
- FIG. 10 – MIXED WATER TEMP SENSOR CONNECTION INSTALLATION15
- FIG. 11 – MIXED WATER TEMP LABEL LOCATION15
- AND ISOLATOR LOCATIONS FOR EACH MODEL16
- WEIGHT DISTRIBUTIONS AND ISOLATOR LOCATIONS FOR EACH MODEL16
- SPRING ISOLATORS (OPTIONAL)16
  - Installation Instructions16
- GENERAL LIQUID PIPING17
- FIG. 13 – FIELD FABRICATED CHILLED WATER PIPING (HEADER ARRANGEMENTS)18
- ELECTRICAL WIRING19
- MULTIPLE UNITS19
- FIG. 14 – FIELD POWER WIRING19
MASTER MODULE WIRING DIAGRAM20
- FIG. 15 – MASTER MODULE ELEMENTARY DIAGRAM20
- FIG. 15 – MASTER MODULE ELEMENTARY DIAGRAM (Cont’d)21
- CONNECTION DIAGRAM MASTER MODULE22
- FIG. 16 – MASTER MODULE SYSTEM WIRING22
- FIG. 16 – MASTER MODULE SYSTEM WIRING (Cont’d)23
- FIG. 17 – MASTER MODULE CONNECTION DIAGRAM24
- FIG. 17 – MASTER MODULE CONNECTION DIAGRAM (Cont’d)25
SLAVE MODULE WIRING DIAGRAM26
- FIG. 18 – SLAVE MODULE ELEMENTARY DIAGRAM26
- FIG. 18 – SLAVE MODULE ELEMENTARY DIAGRAM (Cont’d)27
- CONNECTION DIAGRAM SLAVE MODULE28
- CONDENSER FANS28
- COOLER28
- COMPRESSORS28
- FIG. 19 – SLAVE MODULE SYSTEM WIRING28
- FIG. 19 – SLAVE MODULE SYSTEM WIRING (Cont’d)29
- FIG. 20 – SLAVE MODULE CONNECTION DIAGRAM30
- FIG. 20 – SLAVE MODULE CONNECTION DIAGRAM (Cont’d)31
YORK MICROCOMPUTER CONTROL CENTER32
- FIG. 21 – MICROCOMPUTER CONTROL CENTER32
- INTRODUCTION32
- MICROPROCESS BOARD32
- POWER SUPPLY BOARD33
- RELAY OUTPUT BOARD33
- CURRENT TRANSFORMER (C.T.)33
- 40 CHARACTER DISPLAY33
- KEYPAD33
- BATTERY BACK-UP33
- FIG. 22 – POWER PANEL33
- FIG. 23 – MASTER CONTROL PANEL (EXTERIOR)34
- FIG. 24 – CONTROL PANEL (INTERIOR)34
“DISPLAY” KEYS35
- GENERAL35
- Chilled Liquid Temp35
- Ambient Temp35
- System 1 and 2 Pressures36
- System 3 & 4 Pressures36
- % Motor Current36
- Options36
- Operating Hours36
- Mixed Water Temp37
- TABLE 1 – SWITCH POSITION AND DISPLAY37
- FIG. 25 – DIP SWITCH S1 AND EPROM LOCATION38
“STATUS” KEY41
- GENERAL41
- GENERAL STATUS MESSAGE41
- FAULT STATUS MESSAGES42
- CHILLER FAULTS43
- SYSTEM FAULTS43
“ENTRY” KEYS44
- GENERAL44
“PROGRAM” KEY45
- GENERAL45
- OUTSIDE AIR TMP LOW CUT-OUT46
- OUTSIDE AIR TMP HIGH CUT-OUT46
- DISCHARGE PRESSURE UNLOAD46
- SUCTION PRESSURE UNLOAD47
- RATE CONTROL TEMP47
- ANTI RECYCLE TIME47
- LEAVING WATER TEMP CUT-OUT47
- SUCTION PRESSURE CUT-OUT48
- RATE SENSITIVITY48
“CLOCK” KEYS49
- GENERAL49
- PROGRAMMING THE DAY, TIME AND DATE49
- PROGRAMMING THE DAILY START/STOP AND HOLIDAY SCHEDULE50
CHILLED LIQUID CONTROL51
- GENERAL51
“SETPOINTS” KEYS52
- GENERAL52
- PROGRAMMING LEAVING WATER CONTROL52
- PROGRAMMING LEAVING WATER RATE CONTROL54
- FIG. 26 – LEAVING WATER TEMPERATURE CONTROL54
- LOADING AND UNLOADING55
FIG. 28 – 20 STEP LEAVING WATER CONTROL LOADING / UNLOADING56
“SYSTEM SAFETIES”57
- MANUAL RESET SAFETIES57
- AUTOMATIC RESET SAFETIES59
- ANTICIPATION SAFETY CONTROLS60
  - Suction Pressure Unloading60
  - Discharge Pressure Unloading60
- INTERNAL TIMERS AND PUMPDOWN CONTROLS60
“PRINT” KEYS61
- GENERAL61
- REMOTE PRINT-OUT61
- FIG. 30 – HISTORY PRINT OUT63
- LOCAL DISPLAY READ-OUT64
“UNIT” ON/OFF SWITCH71
- UNIT ON/OFF SWITCH71
- SYSTEM SWITCHES71
- ALARM CONTACTS (ANNUNCIATION ALARM)71
- FIG. 31 – LOCATION OF THE MICROPROCESSOR BOARD72
- FIG. 32 – ALARM CONTACT CONNECTION LOCATION72
- LEAD/LAG COMPRESSOR SELECTION72
- FIG. 33 – LEAD/LAG CONTACT CONNECTION LOCATION73
- MEMORY BATTERY BACK-UP73
- FIG. 34 – CLOCK JUMPER74
- CRANKCASE HEATER74
- EVAPORATOR HEATER74
- METRIC DISPLAY74
- EMS/BAS CONTROLS74
- REMOTE START/STOP BY A CYCLING DEVICE OR TIME CLOCK74
- REMOTE SETPOINT RESET75
- REMOTE UNLOADING75
- FAN CONTROL STRATEGY ABOVE 25°F AMBIENT76
- FAN 35 – FAN LOCATIONS76
COMPRESSOR CAPACITY CONTROL77
- UNLOADING77
- LOADING77
- FIG. 36 – COMPRESSOR UNLOADING SEQUENCE77
SYSTEM START-UP CHECKLIST / REPORT78
- CHECKING THE SYSTEM 24 HOURS PRIOR TO INITIAL START-UP (NO POWER)78
- PANEL CHECKS78
- INITIAL START-UP79
- CHECKING SUPERHEAT AND SUBCOOLING80
- OPERATING SEQUENCE81
PREVENTATIVE MAINTENANCE82
- DAILY MAINTENANCE82
- WEEKLY MAINTENANCE82
- ANNUAL MAINTENANCE82
OPTIONS83
- CONDENSER WATER PUMP CONTACT OPTION83
- FIG. 37 – CONDENSER WATER PUMP CONTACT CONNECTION POINT83
- EVAPORATOR WATER PUMP CONTACT OPTION84
- 0°F LOW AMBIENT OPTION84
- TABLE 2 – LOW AMBIENT FAN CYCLING86
- HOT GAS BYPASS (LOADMINDER) OPTION87
- FIG. 48 – PIPING DIAGRAM88
- FIELD INSTALLATION88
- DISCHARGE PRESSURE READ-OUT OPTION88
- TABLE 3 – FAN CYCLING88
- HIGH AMBIENT OPTION88
- LOCAL PRINTER OPTION89
- FIG. 49 – WEIGH-TRONIX IMP-24 MODEL 2600 PRINTER89
- OPTIONAL DECORATIVE TAMPERPROOF ENCLOSURE93
  - FIG. 45 – LOUVER AND GRILLE INSTALLATION FOR EACH KIT93
- OPTIONAL TAMPERPROOF ENCLOSURE92
- FIG. 46 – COMPLETED INSTALLATION94
  - FIG. 41 – SAMPLE PRINT-OUT89
  - FIG. 47 – LOUVER INSTALLATION FOR EACH KIT94
- BAS INTERFACE95
- FIG. 48 – REMOTE RESET BOARD95
- TROUBLESHOOTING CHART96

York YDAJ87KU6 User Manual

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York YDAJ87KU6 Specifications

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Brand	York
Model	YDAJ87KU6
Category	Chiller
Language	English