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ELECTRICAL CONNECTIONS
WARNING
!
ELECTRICAL SHOCK, FIRE OR EXPLOSION
HAZARD
Failure to follow safety warnings could result in dangerous
operation, serious injury, death or property damage.
Improper servicing could result in dangerous operation,
serious injury, death or property damage.
- - Before servicing, disconnect all electrical power to
furnace.
- - When servicing controls, label all wires prior to
disconnecting. Reconnect wires correctly.
- - Verify proper operation after servicing.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Blower access panel door switch opens 115- -v power to
control. No component operation can occur. Do not bypass
or close switch with panel removed.
See Fig. 24 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
(35_C) rise.
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 NEC NFPA 70 or
local codes to minimize personal injury if an electrical fault
should occur. 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
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 gas
valve mounting bracket screw.
115- -V WIRING
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 7 for equipment
electrical specifications.
16
Make all electrical connections in accordance with current edition
of National Electrical Code (NEC) NFPA 70 and any local codes
or ordinances that might apply.
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.
Use a separate, fused branch electrical circuit with a properly
sized fuse or circuit breaker for this furnace. See Table 7 for wire
size and fuse specifications. A readily accessible means of
electrical disconnect must be located within sight of the furnace.
NOTE: Proper polarity must be maintained for 115- -v wiring. If
polarity is incorrect, control LED status indicator light will flash
10 and furnace will NOT operate.
J- -BOX RELOCATION
NOTE: If factory location of J- -Box is acceptable, go to next
section (ELECTRICAL CONNECTION TO J- -BOX).
1. Remove and save two screws holding J- -Box.
NOTE: The J- -Box cover need not be removed from the J- -Box
in order to move the J- -Box. Do NOT remove green ground
screw inside J- -Box.
2. Cut wire tie on loop in furnace wires attached to J- -box.
3. Move J- -Box to desired location.
4. Fasten J- -Box to casing with two screws removed in Step 1.
5. Route J- -Box wires within furnace away from sharp edges,
rotating parts and hot surfaces.
ELECTRICAL CONNECTION TO J- -BOX
Electrical Box on Furnace Casing Side
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.
1. Select and remove a hole knockout in the casing where the
electrical box is to be installed.
NOTE: Check that duct on side of furnace will not interfere with
installed electrical box.
2. Remove the desired electrical box hole knockout and posi-
tion the hole in the electrical box over the hole in the fur-
nace casing.
3. Fasten the electrical box to casing by driving two field
supplied screws from inside electrical box into casing
steel.
4. Remove and save two screws holding J- -Box.
5. Pull furnace power wires out of 1/2- -in. (12 mm) diameter
hole in J- -Box. Do not loosen wires from strain- -relief
wire- -tie on outside of J- -Box.
6. Route furnace power wires through holes in casing and
electrical box and into electrical box (see Fig. 22)
7. Pull field power wires into electrical box.
8. Remove cover from furnace J- -Box.
9. Route field ground wire through holes in electrical box
and casing, and into furnace J- -Box.
10. Reattach furnace J- -Box to furnace casing with screws re-
moved in Step 4.
11. Secure field ground wire to J- -Box green ground screw.
Specifications are subject to change without notice.
WARNING
!
WARNING
!
441 01 1501 04
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