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Table 1
Kit Contents
QUANTITY
1
2
4
1
1
Inducer Housing Inlet Gasket
2
Inducer Housing Drain Gaskets
8
Table 2
Kit Numbers
UNIT SIZE
INPUT BTUH
26,000
40,000
60,000
40,000
60,000
80,000
60,600
80,000
100,000
120,000
140,000
INSTALLATION
Unit Shut Down
WARNING
!
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury or
death, or property damage.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position and
install a lockout tag. There may be more than one electrical
supply to the furnace. Check accessories and cooling unit for
additional electrical supplies that must be shut off during
furnace servicing. Lock out and tag switch with a suitable
warning label. Verify proper operation after servicing.
1. Set room thermostat to lowest setting or "OFF."
2. Disconnect power at external disconnect, fuse or circuit
breaker.
3. Turn off gas at external shut−off or gas meter.
4. Remove outer doors and set aside.
5. Turn electric switch on gas valve to OFF.
Vent Pipe Removal
NOTE: The vent pipe may be connected to the furnace at the
rubber vent pipe support. Before cutting the vent pipe, loosen
the clamps around the vent pipe coupling and move the vent
pipe away from the furnace. Support the vent pipe as close to
the furnace as possible to prevent damage to the vent system.
NOTE: If the vent pipe passes through the vent pipe coupling
into the vent elbow on the inducer, it may be necessary to cut
the vent pipe external to the casing, then re−cement the vent
pipe with a field−supplied coupling.
1. Support the vent pipe as close to the furnace as possible
to prevent damage to the vent system.
2
DESCRIPTION
Collector Box Assembly
Condensate Trap Gasket
Collector Box Drain Plug
Collector Box Gasket
Screws with Washers
CASING WIDTH
KIT NUMBER
in(mm)
1186071
14−3/16 (360)
1186072
17−1/2 (445)
1186073
21 (533)
1186074
24−1/2 (622)
Specifications subject to change without notice.
2. Cut vent pipe with a hacksaw and move the remaining
vent pipe out of the way. Secure the vent pipe if
necessary.
3. Loosen both clamps at the vent pipe support attached to
furnace casing.
4. Loosen clamp for the vent pipe at vent elbow on the
inducer assembly.
5. Remove remaining vent pipe through the top of the
furnace casing and set aside.
Remove J−Box and Main Harness
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in unit damage or
improper operation.
Label all wires prior to disconnection when servicing controls.
PRUDENCE
!
D'EQUIPEMENT D'OPERATION
Toute erreur de câblage peut être une source de danger et
de panne.
Lors des opérations d'entretien des commandes, étiqueter
tous les fils avant de les déconnecter.
NOTE: Depending on the location of the J−Box and cover, it
may not be necessary to remove the J−Box cover or bracket to
remove the Collector Box. If the J−Box cover and bracket
interfere with the removal of the Collector Box, remove the
J−Box as shown below:
1. Remove the blower door.
2. Remove the screw that secures the J−Box cover to the
J−Box bracket and set the cover aside.
3. Disconnect the field wiring from the factory wiring and
remove the ground wire from the green ground screw on
the J−Box bracket.
4. Remove factory wiring from the J−Box.
5. Disconnect the factory wires from the main limit switch.
6. Remove the screw that secures the door switch to the
blower shelf.
7. Remove main harness from the slot in the blower shelf.
Condensate Drain and Trap Removal
NOTE:
If the condensate trap is removed, a new gasket
between the trap and collector box is required. Verify a
condensate trap gasket is included in the service kit or obtain
one from your local distributor.
1. Disconnect external drain from condensate drain elbow
or drain extension pipe inside the furnace and set aside
2. Disconnect the condensate trap relief hose from collector
box port and the molded retainer clips on the inducer
housing.
NOTE: If condensate has a heat pad attached to the trap,
trace the wires for the pad back to the connection point and
disconnect the wires for the heat pad.
3. Remove the screw that secures the condensate trap to
the collector box, remove the trap and set aside.
4. Remove the trap gasket from the collector box if it did not
come off when the trap was removed.
5. Discard the old trap gasket.
6. Rinse condensate trap in warm water until trap is clean.
7. Flush condensate lines with warm water.
443 06 5102 01
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