Trane Modu manual General Information, Special Note on Refrigeration Emissions

General Information

About This Manual Literature Change History

Use this manual for commercial self- contained models SCWG, SIWG, SCRG, and SIRG. This is the original issue of this manual. It provides specific installation, owner maintenance, and diagnostic troubleshooting instructions for “BO” and later design sequences. The “BO” design sequence includes the VFD option change from Square D Altivar 66 to Altivar 58. For information on previous design sequences, contact your local Trane representative.

Warnings and Cautions

Warnings in this manual indicate potential hazardous situations that can result in death or serious injury.

Cautions in this manual indicate potential hazardous situations that may result in minor or moderate injury and/or equipment damage.

Examples:

!WARNING

Disconnect electrical power source before servicing unit to prevent injury or death from electrical shock.

ECEM = Exhaust/comparative enthalpy module

F/A = Fresh air

GBAS = Generic building automation system

HGBP = Hot gas bypass HI = Human Interface

HVAC = Heating, ventilation and air conditioning

IGV = Inlet guide vanes I/O = Inputs/outputs

IOD= Installation/owner/diagnostic manual

IPC = Interprocessor communications IPCB = Interprocessor communications bridge

LH = Left-hand

MCM = Multiple compressor module MWU = Morning warmup

NSB = Night setback O/A = Outside air

psig = Pounds-per-square-inch, gauge pressure

R/A = Return air RH = Right-hand

RPM = Revolutions-per-minute S/A = Supply air

SCM = Single circuit module SZ = Single-zone (unit airflow)

TCI =Tracer® communications module UCM = Unit control modules

VAV = Variable air volume

VCM =Ventilation control module VOM =Ventilation override module w.c. = Water column

WSM = Waterside module ZSM = Zone sensor module

!CAUTION

Use only copper conductors for electrical unit connections to prevent equipment damage.

Common HVAC Acronyms

For convenience, a number of acronyms and abbreviations are used throughout this manual. These acronyms are alphabetically listed and defined below.

BAS = Building automation systems CFM = Cubic-feet-per-minute CKT. = Circuit

CV = Constant volume CW = Clockwise

CCW = Counterclockwise E/A = Exhaust air

Special Note on Refrigeration Emissions

World environmental scientists have concluded that ozone in our upper atmosphere is being reduced due to the release of CFC fully halogenated compounds.

TheTrane Company urges all HVAC service personnel to make every effort to prevent any refrigerant emissions while installing, operating, or servicing equip- ment. Always conserve refrigerants for continued use.

©American Standard Inc. 2000 SCXG-SVX01B-EN