Table of Contents
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1
Introduction ..............................................................7
Warranty .................................................................... 7
Safety ..........................................................................7
Standards for Safety ................................................ 7
Responsibility for Safety ........................................... 8
About this Manual..................................................... 8
Misuse of Equipment ................................................8
Suitability for Application .......................................8
Structural Support ....................................................8
Mechanical Strength ................................................ 8
General Access ........................................................8
Pressure Systems .....................................................8
Electrical .................................................................. 8
Rotating Parts ..........................................................9
Sharp Edges ............................................................. 9
Refrigerants and Oils ...............................................9
High Temperature and Pressure Cleaning ...............9
Emergency Shutdown ...............................................9
Material Safety Data ...............................................10
2
Introduction .............................................................14
General Description ..............................................14
Compressor ...........................................................14
Evaporator ............................................................15
Condenser .............................................................. 15
Oil Separator / System ..........................................16
Oil Cooling ...........................................................16
Capacity Control ................................................... 16
Power and Control Panel ......................................16
Microprocessor Controls ....................................... 17
Motor Current Protection ......................................17
Motor Protection Module ......................................18
Current Overload ...................................................18
Thermal Overload .................................................. 19
Current Imbalance ................................................. 19
Improper Phase Sequence ......................................19
Motor Protector Dip Switch Settings ....................20
Motor Starting ......................................................... 22
Keypad Controls ......................................................22
Display ................................................................... 22
Entry ...................................................................... 23
Setpoints ................................................................ 23
Clock ...................................................................... 23
Print ....................................................................... 23
Program ................................................................. 23
Accessories and Options ........................................23
4
TABLE OF CONTENTS
DX Cooler Options ..................................................24
Unit Enclosures ........................................................24
Fans........................................................................... 24
Sound Reduction Options ....................................... 24
Vibration Isolation .................................................24
Engineering Data ..................................................... 25
Delivery and Storage .............................................. 27
Inspection ................................................................27
Moving the Chiller .................................................27
Unit Rigging ............................................................28
Location Requirements .......................................... 29
Outdoor Installations ..............................................29
Indoor Installations ................................................. 29
Location Clearances ................................................ 29
Installation of Vibration Isolators.......................... 30
Shipping Braces .......................................................30
Pipework Connection .............................................. 30
Water Treatment ..................................................... 31
Pipework Arrangement .......................................... 32
Connection Types & Sizes ....................................... 32
Cooler Connections ................................................. 32
Refrigerant Relief Valve Piping ............................ 32
Ductwork Connection ............................................32
with Individual Circuit Protection ......................... 23
with Combined Circuit Protection .........................23
without Circuit Protection .....................................23
Control Circuit Terminal Block ............................. 23
Condenser Coil Protection .................................... 23
Pressure ..................................................................24
1-1/2" (38 mm) Insulation ..................................... 24
Flange Accessory ................................................... 24
Remote DX Cooler ................................................24
Flow Switch Accessory ........................................ 24
Star-Delta Compressor Motor Starter .................... 24
Basic Part Number .................................................25
Options Section of Part Number ............................26
3
Lifting Weights ..................................................... 27
4
Installation .............................................................30
General Requirements ........................................... 30
Option Flanges ....................................................... 32
JOHNSON CONTROLS
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