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INTRODUCTION ......................................................9
WARRANTY ..............................................................9
SAFETY ......................................................................9
Standards for Safety................................................9
RESPONSIBILITY FOR SAFETY ..........................10
ABOUT THIS MANUAL .........................................10
MISUSE OF EQUIPMENT ......................................10
Suitability for Application ....................................10
Structural Support .................................................10
Mechanical Strength .............................................10
General Access .....................................................10
Pressure Systems .................................................. 11
Electrical ............................................................... 11
Rotating Parts ....................................................... 11
Sharp Edges .......................................................... 11
Refrigerant & Oils ................................................ 11
High Temperature & Pressure Cleaning ............... 11
Emergency Shutdown ........................................... 11
INTRODUCTION ....................................................12
General System Description .................................12
Compressor ...........................................................13
Evaporator ............................................................14
Condensor .............................................................14
Flash Tank Feed / Drain Valve ..............................15
Oil Separator / Oil System ....................................15
Relief Valves .........................................................15
Oil Cooling ...........................................................16
Capacity Controls .................................................16
Power and Control Panel ......................................16
Microprocessor & VSD Controls .........................16
Display ..................................................................17
Keypad ..................................................................17
Unit Switch ...........................................................17
Variable Speed Drive (VSD) ................................18
ACCESSORIES & OPTIONS ..................................19
Single Point Circuit Breaker .................................19
Condensor Coil Protection....................................19
DX COOLER OPTIONS ..........................................20
SERVICE VALVE OPTION .....................................20
UNIT ENCLOSURES ..............................................20
FANS .........................................................................20
SOUND REDUCTION OPTIONS ...........................20
VIBRATION ISOLATION .......................................20
UNIT NOMENCLATURE .......................................21
PRODUCT IDENTIFICATION NUMBER .............22
JOHNSON CONTROLS
TABLE OF CONTENTS
SECTION 3 - RIGGING, HANDLING & STORAGE
DELIVERY AND STORAGE ...................................26
INSPECTION ............................................................26
MOVING THE CHILLER.........................................26
Lifting Weights ......................................................26
UNIT RIGGING ........................................................27
LOCATION REQUIREMENTS ................................29
OUTDOOR INSTALLATION ...................................29
INDOOR INSTALLATION .......................................29
LOCATION CLEARANCES ....................................30
VIBRATION ISOLATORS .......................................30
Installation .............................................................30
SHIPPING BRACES .................................................30
CHILLED LIQUID PIPING ......................................30
General Requirements ...........................................30
WATER TREATMENT ..............................................32
CONNECTION TYPES & SIZES .............................32
COOLER CONNECTIONS ......................................32
Option Flanges .......................................................32
REFRIGERANT RELIEF VALVE PIPING ..............33
DUCTWORK CONNECTION .................................33
General Requirements ...........................................33
ELECTRICAL CONNECTION ................................33
POWER WIRING ......................................................34
CONTROL PANEL WIRING ....................................34
VOLTS FREE CONTACTS ......................................35
Chilled Liquid Pump Starter ..................................35
Run Contact ...........................................................35
Alarm Contact........................................................35
SYSTEM INPUTS .....................................................35
Flow Switch ...........................................................35
Remote Run/Stop ...................................................35
Optional Remote Setpoint Offset Temp. ...............35
PREPARATION .........................................................36
PREPARATION - GENERAL ...................................36
Inspection...............................................................36
Refrigerant Charge ................................................36
Service and Oil Line Valves ..................................36
Compressor Oil ......................................................36
Fans ........................................................................36
Isolation / Protection ..............................................36
Control Panel .........................................................36
Power Connections ................................................37
Grounding ..............................................................37
FORM 201.21-NM2 (616)
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