11. Remove manifold, orifices, and gas valve as 1 assembly.
12. Remove 4 bolts attaching inducer housing assembly to heat
exchanger cell panel.
Step 2—Install New Motor Assembly
1. Inspect seal on collector box. (See Fig. 2.)
NOTE:
If collector box seal is damaged in any way, it must be
repaired. To repair, apply sealant releasing agent such as PAM
cooking spray or equivalent (must not contain corn or canola oil,
aromatic or halogenated hydrocarbons) to inducer housing. Apply
a small bead of G.E. RTV 162, G.E. 6702, or Dow-Corning RTV
738 sealant to groove in collector box. G.E. 162 (P771-9003) is
available through RCD in 3-oz. tubes.
2. Remove 4 bolts and spacers from old inducer housing assem-
bly.
3. Install spacers in new inducer housing.
4. Insert bolts through inducer housing.
NOTE:
Inserting bolts at this time will add to the ease of their
installation later.
5. Install new inducer housing assembly to heat exchanger cell
panel by aligning guide pins in collector box.
NOTE:
Do not pinch collector box pressure tube when assem-
bling inducer housing to collector box.
6. Tighten 4 bolts securing inducer housing assembly to heat
exchanger cell panel.
7. Remove screw securing capacitor and reuse to secure pressure
switch and capacitor to inducer motor mounting cover plate.
8. Reconnect pressure switch tubes. See tubing label on furnace
for proper connections.
a. Connect tube from burner enclosure and gas valve to
pressure switch.
b. Connect tube from collector box to pressure switch.
9. Reconnect motor leads to quick-connect.
10. Reconnect drain tube to inducer motor mounting cover plate.
11. Remove cap and clamp from unused drain connection on old
inducer motor mounting cover plate and install on new inducer
motor mounting cover plate.
12. Reinstall manifold assembly with gas valve to burner box.
Replace mounting screws.
13. Replace burner box cover.
14. Using backup wrench, reconnect gas supply pipe to gas valve
to prevent rotation and improper orientation.
NOTE:
Use propane gas resistant pipe dope to prevent gas leaks.
DO NOT use Teflon tape.
Gas valve switch or knob MUST be facing forward or tilted
upward. Failure to follow this warning could result in
property damage, personal injury, or death.
15. Reconnect wires to gas valve. Refer to furnace wiring diagram
for proper wire location.
16. Turn on gas and electrical supplies to unit.
17. Check for gas leaks.
Never use matches, candles, flame, or other sources of
ignition to check for gas leakage. Use a soap-and-water
solution. Failure to follow this warning could result in a fire,
personal injury, or death.
18. Check furnace operation through 2 complete cycles.
19. Reinstall main furnace door.
Fig. 1—Inducer Motor Assembly in Upflow
Furnace Orientation
NOTE:
Actual component location may vary depending on model
and series.
A96236
BURNER
ENCLOSURE
COMBUSTION-AIR
INTAKE
CONNECTION
GAS VALVE
VENT OUTLET
CONDENSATE
TRAP
MOTOR AND
BLOWER
ASSEMBLY
AIR FILTER AND
RETAINER
PRESSURE
SWITCH
INDUCER MOTOR
AUXILIARY
JUNCTION BOX
CONDENSING
HEAT
EXCHANGER
(BEHIND CELL
INLET PANEL)
VENT OUTLET
CONTROL
CENTER
BLOWER
ACCESS PANEL
SAFETY
INTERLOCK
SWITCH
CAP AND
CLAMP
(UNUSED
DRAIN
CONNECTION)
PRIMARY HEAT
EXCHANGER
(BEHIND CELL
INLET PANEL)
Fig. 2—Inducer Housing to Collector Box Gasket
A93081
RTV
PAM
Copyright 1996 Carrier Corporation
340m4024
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1
4
Tab
6a 8a
PC 101
Catalog No. 565-826
Printed in U.S.A.
Form 58M-39SI
Pg 2
11-96
Replaces: 58M-37SI
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