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Electrical Connections
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.
Standard units are shipped for use on 115 volt, 60 hertz,
single phase electric power. The motor name-plate 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, United States National Electrical Code, and
applicable local codes; in Canada, to the Canadian
Electrical Code, Part 1, CSA Standard C22.1.
CAUTION
Do not use any tools (i.e. screwdriver, pliers, etc.) across
terminals to check for power. Use a voltmeter.
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 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 United States National Electrical Code, ANSI/
NFPA No. 70, or CSA Standard C22.1. Refer to
Figure 6,Figure
7,
Figure
Thermostat Wiring and Location
NOTICE
The thermostat must be mounted on a vertical,
vibration-free surface, free from air currents, and in
accordance with the furnished instructions.
Mount the thermostat approximately 5 feet (1.5m) 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 the operation of the
control.
3. Dead Areas - Areas where the air cannot circulate
freely, such as behind doors or in corners.
GANE-SVX001B-EN
8,
Figure
9,
Figure
10.
Figure 6.
Low-voltage thermostat wiring single stage
Figure 7.
Low-voltage thermostat wiring two stage
Figure 8.
Low-voltage T834H or T834N (or equivalent)
thermostat wiring single stage
NOTICE
The start-up fan delay should not exceed 30 seconds
from a cold start.
Important:
For all wiring connections, refer to the
wiring diagram shipped with your unit
(either affixed to the side jacket or enclosed
in the installation instructions envelope).
Should any original wire supplied with the
heater have to be replaced, it must be
replaced with wiring material having a
temperature rating of at least 105°C.
Should any high limit wires have to be replaced,
they must be replaced with wiring material having
a temperature rating of 200°C minimum.
15
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