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Wiring
Proper Field Wiring and Grounding Required!
All field wiring MUST be performed by qualified personnel. Improperly installed and grounded
field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow
requirements for field wiring installation and grounding as described in NEC and your local/
state electrical codes. Failure to follow codes could result in death or serious injury.
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.
NOTICE:
Copper Conductors Only!
Unit terminals are not designed to accept other types of conductors. Failure to use copper
conductors could result in equipment damage.
High-Voltage Wiring
Recommended Wiring Entrance Locations
Indoor air handlers can accept conduit penetrations on any side of the piping vestibule. For outdoor
air handlers, the recommended conduit entrance into the gas heat section is through the floor of
the piping vestibule.
Terminate conduits on the power junction box or gas heater control panel as appropriate.
All Gas Heaters
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Note: Factory wiring routed through the heated part of the cabinet has insulation rated for 600˚F .
CLCH-SVX08A-EN
WARNING
WARNING
All field wiring must be in accordance with the National Electric Code and state and local
requirements.
All wiring (including low-voltage wiring) must be copper conductors only with the insulation
rated for 600 volts.
Refer to the nameplate located on the gas heater section for the proper Input Voltage, Minimum
Circuit Ampacity (MCA) and Maximum Overcurrent Protection (MOP) requirements for proper
electrical installation.
Input voltage must be within +/- 10 percent of specified value.
Ground the supply power in the junction box to the ground lead provided.
Do not route any wires through the heat exchanger section unless the insulation is rated for
600˚F or higher. Radiant heat from the heat exchanger will damage wire insulation that is
unsuitable for high temperatures.
See
Table 8
for power supply requirements.
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