Unit Nameplate
One Mylar unit nameplate is located on the outside upper left corner of the control panel door. It includes the unit model number, serial number, electrical characteristics, weight, refrigerant charge, as well as other pertinent unit data. A small metal nameplate with the Model Number, Se- rial Number, and Unit Weight is located just above the Mylar nameplate, and a third nameplate is located on the inside of the control panel door.
Compressor Nameplate
The Nameplate for the Scroll Compressor is located on the compressor lower housing.
Hazard Identification
WARNING– Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION – Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.
WARNING
Fiberglass Wool
Product contains fiberglass wool. Disturbing the insula- tion in this product during installation, maintenance or repair will expose you to airborne particles of glass wool fibers and ceramic fibers known to the state of California to cause cancer through inhalation. Glass wool fibers may also cause respiratory, skin or eye irri- tation.
Precautionary Measures
-Avoid breathing fiberglass dust.
-Use a NIOSH approved dust/mist respirator.
-Avoid contact with the skin or eyes. Wear long- sleeved,
-Wash clothes separately from other clothing: rinse washer thoroughly.
-Operations such as sawing, blowing,
First Aid Measures
Eye Contact - Flush eyes with water to remove dust. If symptoms persist, seek medical attention.
Skin Contact - Wash affected areas gently with soap and warm water after handling.
General Information (Continued)
Commonly Used Acronyms
For convenience, a number of acronyms and abbreviations are used throughout this manual. These acronyms are al- phabetically listed and defined below.
BAS = Building automation systems CFM =
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
IOM = Installation/operation/ maintenance manual IPC = Interprocessor communications
IPCB = Interprocessor communications bridge
MCM = Multiple compressor module MWU = Morning
NSB = Night setback O/A = Outside air
psig =
RH =
RPM =
RTM = Rooftop module S/A = Supply air
SCM = Single circuit module SZ =
TCI = Tracer communications module UCM = Unit control modules
VAV = Variable air volume
VCM = Ventilation control module VOM = Ventilation override module w.c. = Water column
Unit Description
Each Trane commercial,
An optional roof curb, specifically designed for the S_HF and S_HG units is available from Trane. The roof curb kit must be field assembled and installed according to the lat- est edition of
Trane Commercial Rooftop Units are controlled by a micro- electronic control system that consists of a network of mod- ules and are referred to as Unit Control Modules (UCM).
The acronym UCM is used extensively throughout this document when referring to the control system network.
These modules through Proportional/Integral control algo- rithms perform specific unit functions which provide the best possible comfort level for the customer.
They are mounted in the control panel and are factory wired to their respective internal components. They receive and interpret information from other unit modules, sensors, remote panels, and customer binary contacts to satisfy the applicable request for economizing, mechanical cooling, heating, and ventilation. Refer to the following discussion for an explanation of each module function.
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