Trane RTWD Installation Operation & Maintenance page 3

Table of Contents
Installer-Supplied Components ........................................................... 59
Power Supply Wiring ........................................................................................................... 59
Control Power Supply .......................................................................................................... 59
Installer-Supplied Components ........................................................................................... 59
Installation - Electrical ...................................................................... 60
Interconnecting Wiring ......................................................................................................... 60
Alarm and Status Relay Outputs (Programmable Relays) ................................................ 61
Relay Assignments Using TechView .................................................................................. 63
Communications Interface options ...................................................... 67
External Analog Output ........................................................................................................ 67
Optional Tracer Communications Interface ........................................................................ 69
Operating Principles .......................................................................... 71
General - RTWD .................................................................................................................... 71
General - RTUD ..................................................................................................................... 71
Refrigeration (Cooling) Cycle ............................................................................................... 73
Oil System Operation (RTWD/RTUD) .................................................................................. 76
RTWD Operating map ....................................................................... 78
Pre-Start Checkout ........................................................................... 79
RTWD HSE version ............................................................................................................... 79
Start-up .................................................................................................................................. 83
Service and Maintenance .................................................................. 84
Overview ............................................................................................................................... 84
Maintenance .......................................................................................................................... 84
Weekly Maintenance and Checks ........................................................................................ 84
Monthly Maintenance and Checks ...................................................................................... 84
Annual Maintenance ............................................................................................................ 85
Scheduling Other Maintenance ........................................................................................... 85
Service Procedures ............................................................................................................... 86
Waterbox Weights ................................................................................................................ 89
Compressor Oil ..................................................................................................................... 90
Oil Sump Level Check .......................................................................................................... 90
Removing Compressor Oil ................................................................................................... 91
Oil Charging Procedure ........................................................................................................ 91
Replacing the Oil Filter ......................................................................................................... 91
Refrigerant Charge ............................................................................................................... 92
Evacuation and Dehydration ............................................................................................... 92
Freeze Protection .................................................................................................................. 93
Recommended service routine frequencies ........................................... 94
Additional services ........................................................................... 95
RLC-SVX14H-GB 3