York YCAS0295EB, Installation Operation & Maintenance

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5 YORK INTERNATIONAL
FORM 201.19-NM7 (804)
TABLE OF CONTENTS (CONT’D)
Units with Single-Point Power Supply Wiring .... 32
115VAC CONTROL SUPPLY TRANSFORMER ........ 32
Remote Emergency Stop Device.......................... 33
CONTROL PANEL WIRING........................................ 33
VOLTS FREE CONTACTS .......................................... 33
Chilled Liquid Pump Starter ................................ 33
Run Contact.......................................................... 33
Alarm Contacts..................................................... 33
SYSTEM INPUTS......................................................... 33
Flow Switch.......................................................... 33
Remote Run / Stop ............................................... 33
Remote Print......................................................... 33
Remote Setpoint Offset – Temperature ................ 33
Remote Setpoint Offset – Current ........................ 33
SECTION 5 - COMMISSIONING
PREPARATION............................................................. 40
PREPARATION – POWER OFF .................................. 40
Inspection ............................................................. 40
Refrigerant Charge ............................................... 40
Valves ................................................................... 40
Compressor Oil .................................................... 40
Fans ...................................................................... 40
Isolation/Protection .............................................. 40
Control Panel........................................................ 40
Power Connections............................................... 40
Grounding............................................................. 40
Overloads ............................................................. 40
Supply Voltage ..................................................... 40
Control Transformer ............................................. 40
Switch Settings ..................................................... 41
Crankcase Heaters ................................................ 41
Water System........................................................ 41
Flow Switch.......................................................... 41
Temperature Sensor(s).......................................... 41
Control Supply ..................................................... 41
Programmed Options............................................ 41
Programmed Settings ........................................... 41
Date and Time ...................................................... 41
Start/Stop Schedule .............................................. 41
Setpoint and Remote Offset ................................. 41
FIRST TIME START-UP............................................... 42
Interlocks .............................................................. 42
System Switches................................................... 42
Start-up ................................................................. 42
Oil Pressure .......................................................... 42
Refrigerant Flow .................................................. 42
Fan Rotation ......................................................... 42
Suction Superheat................................................. 42
Expansion Valve .................................................. 42
Economizer Superheat ......................................... 42
Subcooling............................................................ 42
General Operation ................................................ 42
SECTION 6 - OPERATION
GENERAL DESCRIPTION .......................................... 44
START-UP ..................................................................... 44
NORMAL RUNNING AND CYCLING....................... 44
SHUTDOWN................................................................. 44
SECTION 7 - TECHNICAL DATA
FLOW RATE AND PRESSURE DROP CHARTS ....... 46
GLYCOL CORRECTION FACTORS........................... 46
TEMPERATURE AND FLOWS................................... 47
PHYSICAL DATA......................................................... 48
OPERATING LIMITATIONS AND SOUND POWER
DATA ............................................................................. 49
Electrical Data ...................................................... 50
Electrical Notes .................................................... 58
WIRING DIAGRAM..................................................... 60
ELEMENTARY DIAGRAM ......................................... 62
CONNECTION DIAGRAM (SYSTEM WIRING) ...... 73
COMPRESSOR TERMINAL BOX .............................. 74
DIMENSIONS–YCAS0295-YCAS0375 ...................... 78
DIMENSIONS–YCAS0425-YCAS0575 ...................... 80
DIMENSIONS–YCAS0605 .......................................... 82
TECHNICAL DATA...................................................... 84
WEIGHT DISTRIBUTION AND ISOLATOR
MOUNTING POSITIONS ............................................ 85
INSTALLATION INSTRUCTIONS FOR VMC SERIES
AWR/AWMR AND CP RESTRAINED
MOUNTINGS.............................................................. 101
COMPRESSOR COMPONENTS ............................... 105
UNIT CHECKS (NO POWER)................................... 111
SYSTEM STARTUP CHECKLIST............................. 111
PANEL CHECKS ........................................................ 112
PROGRAMMED VALUES......................................... 112
INITIAL START-UP.................................................... 113
CHECKING SUBCOOLING AND SUPERHEAT .... 113
CHECKING ECONOMIZER SUPERHEAT ............. 114
LEAK CHECKING ..................................................... 114