FA
Series
Field Wiring Supply Voltage
Before proceeding with electrical connections, ensure that the supply voltage, frequency, phase and
current capacity meet the requirements specified on the rating plate . A dedicated line voltage supply
with properly sized wire should run directly from the main electrical panel to the heater . The power to
the unit must be protected with a circuit breaker appropriate for the load . The unit must be electrically
grounded in accordance with local codes, or in their absence, with the latest edition of the National
Electrical Code, ANSI / NFPA 70 and/or the Canadian Electrical Code CSA C22 . 1 , latest edition .
The power supply to the heater must be within +/- 5% of the voltage rating as indicated on the rating
plate of the appliance . If input power does not meet these specifications, contact your utility company .
An electrical service disconnect must be provided at the furnace location . A 2 x 4 junction box can be
mounted directly to the unit panel utilizing the provided 1/2" knock-out . If conditions do not allow for this,
locate the service disconnect not more than 5 feet away from the service access panel .
The main electrical supply enters at the rear of the heater utilizing 1/2" electrical knock-out (See Figure
3 .3) . When routing the electrical supply conduit to the unit, ensure that it does not interfere or obstruct
the heater's service access panel .
Unit comes with three wire leads to connect the main power supply . Connect the hot, neutral and
ground wires as shown in the field wiring diagram, Figure 3 .3 . When routing wires through the knock-
out, use a UL Listed bushing or chase nipple to prevent damage to the wire insulation . When operating
this unit as a sealed combustion appliance, the cabinet opening to the junction box must be sealed air
tight using either a UL approved bushing or a non-reactive UL approved sealant to bushing .
Edges of sheet metal holes may be sharp . Use gloves as a precaution when
routing wires .
3.0
CAUTION
!
WARNING
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19
Installation
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Field Wiring Supply Voltage