Specifications

Figure 33 _Gas Entry
Left SideGas Entry.Gas Pipe
Grommet Required ForDirect Gas Pipe GrommetRequirec
Vent Applications. ForDirectVent Applications
ELECTRICAL CONNECTIONS
115-V Wiring
Furnace must have a 115-v power supply properly connected
and grounded.
NOTE: Proper polarity must be maintained for 115-v wiring. If
polarity is incorrect, control status indicator light flashes rapidly
and furnace does NOT operate.
Verify that the voltage, frequency, and phase correspond to that
specified on unit rating plate. Also, check to be sure that
service provided by utility is sufficient to handle load imposed
by this equipment. Refer to rating plate or Table9 for
equipment electrical specifications.
U.S.A. Installations: Make all electrical connections in
accordance with National Electrical Code (NEC) ANSI/NFPA 70
and any local codes or ordinances that might apply.
Canadian Installations: Make all electrical connections in
accordance with the current edition of the Canadian Electrical
Code CSA C22.1 and any local codes or ordinances that might
apply.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Blower door switch opens 115-v power to control. No
component operation can occur. Do not bypass or close
switch with blower door removed.
See Figure 34 for field wiring diagram showing typical field
115-v wiring. Check all factory and field electrical connections
for tightness.
Field-supplied wiring shall conform with the limitations of 63°F
(33°C) rise.
ELECTRICAL SHOCK AND FIRE HAZARD
Failure to follow this warning could result in personal
injury, death, or property damage.
The cabinet MUST have an uninterrupted or unbroken
ground according to NEC ANSI/NFPA 70-2011 or local
codes to minimize personal injury if an electrical fault
should occur. In Canada, refer to Canadian Electrical
Code CSA C22.1. This may consist of electrical wire,
conduit approved for electrical ground or a listed,
grounded power cord (where permitted by local code)
when installed in accordance with existing electrical
codes. Refer to the power cord manufacturer's ratings
for proper wire gauge.
Do not use gas piping as an electrical ground.
FURNACE MAY NOT OPERATE HAZARD
Failure to follow this caution may result in intermittent
furnace operation.
Furnace control must be grounded for proper operation
or else control will lock out. Control must remain
grounded through green/yellow wire routed to gas
valve and manifold bracket screw.
FIRE HAZARD
Failure to follow this warning could result in personal
injury, death, or property damage.
Do not connect aluminum wire between disconnect
switch and furnace. Use only copper wire.
SWITCH wIRPPERy
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Use a separate, fused branch electrical circuit with a properly
sized fuse or circuit breaker for this furnace. See Table 9 for
wire size and fuse specifications. A readily accessible means of
electrical disconnect must be located within sight of the
furnace.
J-Box Installation
FIRE OR ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury, death, or property damage.
If field-supplied manual disconnect switch is to be
mounted on furnace casing side, select a location where
a drill or fastener cannot damage electrical or gas
components.
The J-Box is used when field line voltage electrical connections
are made to the furnace wiring harness inside the furnace
casing. The J-Box is not required if a field-supplied electrical
box is attached to the outside of the furnace casing and the box
is grounded to the green ground wire of the main wiring
harness and the earth ground of the field electrical supply.
440 01 4201 01 Specificati ..... bject to change without notice. 27