Trane SCXG-SVX01B-EN Introduction, Hazard Identification, Special Note on Refrigeration Emissions

Introduction

About This Manual Literature Change History

Use this manual for commercial self- contained models SCWG, SIWG, SCRG, and SIRG.This is the second or “B” revision of this manual. It provides specific installation, operation, and maintenance, instructions for “JO” and later design sequences.The “JO” design sequence includes the addition of 407c refrigerant option andVFD change from Square D 58 to theTraneTR-1. Also, this literature contains changes in the filter sizes and quantities for some unit sizes. For previous design sequences, contact your localTrane representative.

Hazard Identification

Warnings and cautions appear at appropriate sections throughout this manual. Read these carefully.

￿WARNING

Indicates a potentially hazardous situation, which could result in death or serious injury if not avoided.

￿CAUTION

Indicates a potentially hazardous situation, which may result in minor or moderate injury if not avoided. Also, it may alert against unsafe practices.

NOTICE

Indicates a situation that may result in equipment or property-damage-only accidents.

￿WARNING Grounding Required!

Follow proper local and state electrical code on requirements for grounding. Failure to follow code could result in death or serious injury.

SampleWarnings and Cautions

￿WARNING

HazardousVoltage w/Capacitors!

Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout proce- dures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided byTrane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors.Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury.

Note: For additional information regard- ing the safe discharge of capacitors, see PROD-SVB06A-EN or PROD-SVB06A-FR.

NOTICE

Use Copper Conductors Only!

Unit terminals are not designed to accept other type conductors. Failure to use copper conductors may result in 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

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/ diagnosticmanual

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 RTM = Rooftop module

S/A = Supply air

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

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.

Trane urges all HVAC service personnel to make every effort to prevent any refrigerant emissions while installing, operating, or servicing equipment. Always conserve refrigerants for continued use.

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