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Line polarity must be observed when making eld
connections. Line voltage connections can be made
through either the right or left side panel. The furnace
is shipped congured for a right side electrical
connection with the junction box located inside the burner
compartment (blower compartment for downows). To
make electrical connections through the opposite side of
the furnace, the junction box must be relocated to the other
side of the burner (or blower) compartment prior to making
electrical connections. To relocate the junction box, follow
the steps shown below.
WARNING
WARNING
Line voltage connections can be made through either the
right or left side panel. The furnace is shipped congured
for a left side electrical connection. To make electrical
connections through the opposite side of the furnace, the
junction box must be relocated to the right side prior to
making electrical connections. To relocate the junction
box, perform the following steps.
1. Remove the burner compartment door.
2. Remove and save the two screws securing the
junction box to the side panel.Horizontal Installations
3. Remove and save the two screws securing the
junction box to the side panel.
4. Relocate junction box and associated plugs and
grommets to opposite side panel. Secure with screws
removed in step 2.
To ensure proper unit grounding, the ground wire should
run from the furnace ground screw located inside the
furnace junction box all the way back to the electrical
panel. Do not use gas piping as an electrical
ground. To conrm proper unit grounding, turn o the
electrical power and perform the following check.
WARNING
CAUTION
The wiring harness is an integral part of this furnace. Field
alteration to comply with electrical codes should not be
required. Wires are color coded for identication purposes.
Refer to the wiring diagram for wire routings. If any of
the original wire as supplied with the furnace must be
replaced, it must be replaced with wiring material having
a temperature rating of at least 105° C. Any replacement
wiring must be a copper conductor.
Before proceeding with electrical connections, ensure that
the supply voltage, frequency, and phase correspond to
that specied on the unit rating plate. Power supply to
the furnace must be NEC Class 1, and must comply with
all applicable codes. The furnace must be electrically
grounded in accordance with local codes or, in their
absence, with the latest edition of The National Electric
Code, ANSI NFPA 70 and/or The Canadian Electric Code
CSA C22.1.
Use a separate fused branch electrical circuit containing
properly sized wire, and fuse or circuit breaker. The fuse
or circuit breaker must be sized in accordance with the
maximum overcurrent protection specied on the unit
rating plate. An electrical disconnect must be provided at
the furnace location.
Connect hot, neutral, and ground wires as shown in the
wiring diagram located on the unit’s blower door.
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