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INSTALLATION INSTRUCTIONS
Figure 37
Gas Entry
Left Side Gas Entry. Gas Pipe
Grommet Required For Direct
Vent Applications.
Figure 38
Alternate Gas and Electric Entry
1 1/2 inch for Gas
NOTE: Top plate may be field drilled for
alternate gas and 115 VAC electric entry
ELECTRICAL CONNECTIONS
WARNING
!
ELECTRICAL
SHOCK,
HAZARD
Failure to follow safety warnings could result in
dangerous operation, serious injury, death or property
damage.
Improper
servicing
could
operation, serious injury, death or property damage.
Before servicing, disconnect all electrical
S
power to furnace.
When servicing controls, label all wires prior
S
to disconnecting. Reconnect wires correctly.
Verify proper operation after servicing.
S
Always reinstall access doors after
S
completing service and maintenance.
WARNING
!
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 39 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.
32
Gas Pipe Grommet Required
For Direct Vent Applications
7/8 inch for 115 VAC Electric
L170125
FIRE
OR
EXPLOSION
result
in
dangerous
Specifications subject to change without notice.
WARNING
!
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 current edition of the NEC NFPA 70
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.
CAUTION
!
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.
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 Table 11 for
equipment electrical specifications.
U.S.A. Installations: Make all electrical connections in
accordance with the current edition of the National Electrical
Code (NEC) 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.
Gas Furnace: N9MSB
440 01 4104 07
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