York YCAS Series, Installation Operation & Maintenance

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5 YORK INTERNATIONAL
FORM 201.19-NM8 (804)
TABLE OF CONTENTS (CONT’D)
SECTION 5 - COMMISSIONING ..................... 40
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
Compressor 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 .............................. 44
GENERAL DESCRIPTION.......................................44
START-UP ................................................................44
NORMAL RUNNING AND CYCLING .......................44
SHUTDOWN ............................................................44
SECTION 7 - TECHNICAL DATA .................... 46
FLOW RATE AND PRESSURE DROP CHARTS.....46
GLYCOL CORRECTION FACTORS ........................46
PHYSICAL DATA - YCAS R-407C (SI UNITS) .........48
OPERATING LIMITATIONS AND SOUND POWER
DATA.........................................................................49
ELECTRICAL DATA..................................................50
MULTIPLE POINT POWER SUPPLY
CONNECTION .........................................................50
MULTIPLE POINT POWER SUPPLY
CONNECTION .........................................................51
OPTIONAL SINGLE POINT POWER SUPPLY
CONNECTION AND INDIVIDUAL SYSTEM
CIRCUIT BREAKERS ..............................................52
ELECTRICAL NOTES ..............................................54
WIRING DIAGRAMS ................................................56
WIRING DIAGRAMS ................................................73
DIMENSIONS – YCAS0685 (SI) ..............................94
DIMENSIONS – YCAS0775 - YCAS0905 (SI) .........96
DIMENSIONS – YCAS0965 (SI) ..............................98
DIMENSIONS – YCAS1065 - YCAS1215 (SI) .......100
TECHNICAL DATA .................................................102
WEIGHT DISTRIBUTION AND ISOLATOR
MOUNTING POSITIONS ......................................103
INSTALLATION INSTRUCTIONS FOR VMC
SERIES AWR/AWMR AND CP RESTRAINED
MOUNTINGS..........................................................120
COMPRESSOR COMPONENTS...........................124
SYSTEM STARTUP CHECKLIST ..........................130
UNIT CHECKS (NO POWER) ................................130
PANEL CHECKS (POWER ON – BOTH SYSTEM
SWITCHES “OFF”) ..................................................131
PROGRAMMED VALUES ......................................131
INITIAL START-UP..................................................132
CHECKING SUBCOOLING AND SUPERHEAT ..132
CHECKING ECONOMIZER SUPERHEAT ...........132
LEAK CHECKING...................................................132
SECTION 8 - MICRO PANEL CONTENTS.... 134
CHILLER CONTROL PANEL .................................134
PROGRAMMING AND DATA ACCESS KEYS .......134
DISPLAY AND STATUS INFORMATION KEYS .....134
ON / OFF ROCKER SWITCH ................................134
PROGRAM & SETUP KEYS ..................................134
1. INTRODUCTION & PHYSICAL
DESCRIPTION..........................................................135
1.1 General ................................................................135
1.2 Keypad & Display ...............................................135
1.3 Unit (Chiller) On / Off Switch.............................136
1.4 Microprocessor Board .........................................136
1.5 Ancillary Circuit Boards......................................136
1.6 Circuit Breakers ..................................................137
1.8 Transformers........................................................138
1.9 Motor Protector Modules ....................................138
1.10 Ems/bas Controls...............................................140
1.11 Microprocessor Board Layout ...........................142
1.12 Logic Section Layout .......................................143
1.13 Anti-recycle Timer.............................................144