Trane CAUC-C20, Installation Operation & Maintenance, Page: 3 / 44

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Table of Contents
Section One
About The Manual
Literature Change History ................................................ 2
Overview of Manual ......................................................... 2
Section Two
General Information
Model Number Description .............................................. 4
Unit Nameplate ................................................................ 4
Hazard Identification ........................................................ 4
Unit Description ................................................................ 4
Unit Component Layout and "Shipwith" Locations .......... 5
Section Three
Installation
Unit Inspection ................................................................. 6
Unit Clearances ............................................................... 6
Unit Dimensions & Weight Information ............................ 6
Foundation ....................................................................... 6
Rigging ........................................................................... 14
Unit Isolation .................................................................. 15
Neoprene Isolators ..................................................... 15
Spring Isolators .......................................................... 16
Leveling the Unit ............................................................ 16
General Unit Requirements ........................................... 17
Refrigerant Piping ....................................................... 17
Main Electrical Power Requirements ......................... 17
Field Installed Control Wiring ..................................... 17
Refrigerant Piping .......................................................... 18
Liquid Lines ................................................................ 18
Liquid Line Components ............................................ 18
Discharge (Hot Gas) Lines ......................................... 18
Discharge Line Components ...................................... 19
Making Refrigerant Connections ................................... 19
Brazing Procedures ....................................................... 19
Leak Testing Procedure ................................................. 20
Field Installed Power Wiring .......................................... 20
Main Unit Power Wiring .............................................. 20
Field Installed Control Wiring ..................................... 23
CCAD Package Chiller Interface ................................ 23
Section Four
System Pre-Start Procedures
System Evacuation Procedures ..................................... 26
Voltage Imbalance ......................................................... 28
Electrical Phasing .......................................................... 28
Section Five
System Start-Up
Sequence of Operation .................................................. 29
Verifying Proper Condenser Fan Rotation ..................... 30
All Fans are Rotating Backwards; .............................. 30
Some Fan Rotating Backwards .................................. 30
Low Ambient Damper Adjustment ................................. 31
Charging the System ..................................................... 31
Section Six
Service and Maintenance
Monthly Maintenance ..................................................... 38
Coil Cleaning .................................................................. 39
Index .................................................................................. 40