Trane Gas Unit Heaters Wartungshandbuch

GTND-SVX01B-EN

37 

Standard units are shipped for use on 115 volt, 60 hertz 
single phase electric power. The motor nameplate and 
electrical rating of the transformer should be checked 
before energizing the unit heater electrical system. All 
external wiring must conform to the latest edition of ANSI/
NFPA No. 70 National Electrical Code and applicable local 
codes; in Canada, to the Canadian Electrical Code, Part 1 
CSA Standard C22.1.

It is recommended that the electrical power supply to each 
unit heater be provided by a separate, fused, and 
permanently live electrical circuit. A disconnect switch of 
suitable electrical rating for each unit heater should be 
located as close to the gas valve and controls as possible. 
Each unit heater must be electrically grounded in 
accordance with the latest edition of the National Electric 
Code, ANSI/NFPA No. 70 or CSA Standard C22.1. See 
sample wiring connections:
•

All unit sizes: Refer to 

 through 

 and 

.

•

Unit sizes 30–120: Also refer to 

 through 

Figure 44, p. 51.

•

Unit sizes 150–400: Also refer to 

 and 

.

Mount the thermostat approximately 5 feet (1.5 m) above 
the floor in an area where it will be exposed to a free 
circulation of average temperature air. Always refer to the 
thermostat instructions as well as our unit wiring diagram, 
and wire accordingly. Avoid mounting the thermostat in 
the following locations:

1.

Cold areas—Outside walls or areas where drafts may 
affect the operation of the control.

2. Hot areas—Areas where the sun’s rays, radiation, or 

warm air currents may affect control operation.

3. Dead areas—Areas where air cannot circulate freely, 

such as behind doors or in corners.