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Electrical Connections; V Wiring; J-Box Relocation - Kenmore N8MSL0701412A1 Installation Instructions Manual

80% single stage psc motor category i, gas furnace
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ELECTRICAL CONNECTIONS
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 Figure 26 for field wiring diagram showing typical field
115-v
wiring.
Check
all
factory
and
field
electrical
connections for tightness.
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
70-2008
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.
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 manifold 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.
Make all electrical
connections
in accordance
with National
Electrical Code (NEC) ANSI/NFPA
70-2008
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 a status code 10 and furnace wilt NOT operate.
J-BOX
RELOCATION
NOTE:
If factory location of J-Box
is acceptable, go to next
section (ELECTRICAL CONNECTION
TO J-BOX).
NOTE:
On 14-in. (356 mm) wide casing models, the J-Box
shall not be relocated to other side of furnace casing when
the vent pipe is routed within the casing.
1. Remove and save two screws
holding J-Box.
(See
Figure 23)
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.
The ground
screw
is not
threaded into the casing flange and can be lifted out of the
clearance hole in casing while swinging the front edge of the
J-Box outboard of the casing.
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
Field-Supplied
Electrical Box on Furnace J-Box Bracket See
Figure 24.
1. Remove cover from furnace J-Box.
2. Attach electrical box to furnace J-Box
bracket with at
least two field-supplied
screws through holes in elec-
trical box into holes in bracket. Use blunt-nose
screws
that will not pierce wire insulation.
3. Route furnace power wires through holes in electrical
box and J-Box
bracket, and make field-wire
connec-
tions in electrical box. Use best practices (NEC in U.S.)
for wire bushings, strain relief, etc.
4. Route and secure field ground wire to green ground
screw on J-Box bracket.
5. Connect line voltage leads as shown in Figure 26.
6. Reinstall cover to J-Box.
Do not pinch wires between
cover and bracket.
Electrical Box on Furnace Casing
Side See Figure 24.
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 caslng
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
position the hole in the electrical box over the hole in
the furnace casing.
3. Fasten the electrical box to casing by driving two field
supplied screws from inside electrical
box into casing
steel.
20
441 01 1402 02

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