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General Information
Model Number Description
All Trane products are identified by a multiple-character
model number that precisely identifies a particular type of
unit. An explanation of the alphanumeric identification code
is provided below. Its use will enable the owner/operator, in-
stalling contractors, and service engineers to define the op-
eration, specific components, and other options for any spe-
cific unit.
When ordering replacement parts or requesting service, be
sure to refer to the specific model number, serial number,
and DL number (if applicable) stamped on the unit name-
plate.
Sample Model Number: CGAF - C30 4 A A B 0 D etc.
Digit Number: 1,2,3,4 5,6,7 8 9 10 11 12 13 +
Digit 1,2 - Unit Function Digit 9 - Heating Capacity Digit 13, etc. Miscellaneous
CG = Cold Generator A = Standard A = Communications Interface (TCI)
B = No Unit Heat Tape (50 Hz Units Only)
Digit 3 - Unit Type Digit 10 - Design Sequence
C = Compressor Current Sensing (CSM)
A = Air-Cooled Condenser H = Brazed Plate Chiller D = Non-Fused Unit-Mounted Disconnect
E = *Unit Isolators - Neoprene P/S
Digit 4 - Development Sequence Digit 11 - Leaving Water Setpoint
F = *Unit Isolators - Spring P/S
F = Sixth A = 40 - 50 F w/o Ice Machine
G = Superheat / Subcooling
B = 30 - 39 F w/o Ice Machine H = Hot Gas Bypass
Digit 5,6,7 - Nominal Capacity
D = 51 - 65 F w/o Ice Machine J = Generic BAS Module 0-5 VDC Input, Binary O.
C20 = 20 Tons E = 20 - 29 F w/o Ice Machine K = Stock Unit
C25 = 25 Tons 1 = 40 - 50 F w Ice Machine L = LonTalk® Communication Interface Module
C30 = 30 Tons 2 = 30 - 39 F w Ice Machine M = *Remote Human Interface
C40 = 40 Tons 3 = 51 - 65 F w Ice Machine N = Generic BAS Module 0-10 VDC Analog Output
C50 = 50 Tons 4 = 20 - 29 F w Ice Machine P = Remote Setpoint Potentiometer P/S
C60 = 60 Tons S = Special Q = *Zone Sensor (Chilled Solution Reset) P/S
S = Special
Digit 8 - Power Supply
V = Copper Fin Condenser Coil
E = 200/60/3 P/S*** W = **Electronic Low Ambient Dampers P/S
F = 230/60/3 Y = *Inter-Processor Comm Bridge (IPCB)
4 = 460/60/3 P/S*** 9 = Packed Stock Unit
5 = 575/50/3
Digit 12 - Agency Approval
* = Field Installed Options
9 = 380/50/3 0 = None ** = Factory or Field Installed Option
D = 415/50/3 1 = UL/CSA *** Available on Pack Stock Units
S = Special
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.
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.
CAUTION - Indicates a situation that may result in
equipment or propertydamage only accidents.
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.
A/D = Analog/Digital
BAS = Building Automation System
CAR = Circuit shuwdown - Auto Reset
Cf = Evaporator limit control integrator
CGA = Air cooled - Cold Generator
UCM = Cold generator module. Contains I/O for most
chilled solution functions.
Comp(s) = compressor(s)
Cond = condenser
Ckt = circuit
CLE = Chilled solution flow integrator
CMR = Circuit shutdown - Manual Reset
CRS = Control response setpoint
CSA = Canadian Standards Association
CCW = counterclockwise
CW = clockwise
DBZ = Width of Dead Band Zone
DDT = Design Delta-T setpoint
Delta T = The temperature difference between EST & LST
Diag = diagnostics
EST = Entering solution temperature
Ent = Entering
Echelon, LON, LONWORKS, LonBuilder, NodeBuilder, LonManager, LonTalk, LonUsers, Neuron, 3120, 3150, the Echelon logo, and the LonUsers logo are
trademarks of Echelon Corporation registered in the United States and other countries. LonLink, LonResponse, LonSupport, LonMaker, and LonPoint are
trademarks of Echelon Corporation.
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