PSC Inducer Motor Kit
Installation Instructions
→ Part No. 317292-753
NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
SAFETY CONSIDERATIONS
Installing and servicing of heating equipment can be hazardous
due to gas and electrical components. Only trained personnel
should install or service heating equipment.
Untrained personnel can perform basic maintenance functions
such as cleaning coils, or cleaning and replacing filters. All other
operations should be performed by trained service personnel.
When working on heating equipment, observe precautions in
literature, on tags, and on labels attached to unit.
Follow all safety codes. Wear safety glasses and work gloves.
Have a fire extinguisher available.
Recognize safety information. This is the safety-alert symbol
.
When you see this symbol on the furnace and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and CAU-
TION. These words are used with the safety-alert symbol. DAN-
GER identifies the most serious hazards which will result in severe
personal injury or death. WARNING signifies a hazard which
could result in personal injury or death. CAUTION is used to
identify unsafe practices which would result in minor personal
injury or product and property damage.
Before beginning any installation or modification, be sure
main electrical disconnect is in OFF position. Failure to
follow this warning could result in electrical shock, personal
injury, fire, or death.
INTRODUCTION
This instruction covers installation of the permanent split capacitor
(PSC) inducer motor kit Part No. 317292-753 for use in condens-
ing gas furnaces. See the appropriate section for details on your
furnace model.
Section I: Models 398A, 399A, 58DX, 58DXA, 58DXC, 58SX,
58SXA, and 58SXC; 46-3/16-in. Tall Condensing Gas Furnaces.
Section II: Models 340MAV, 350MAV, 490AAV, 58MCA, and
58MXA; 40-in. Tall Multipoise Condensing Gas Furnaces.
DESCRIPTION AND USAGE
Use this PSC motor kit to repair units with an inducer motor
requiring replacement. This kit is designed to allow replacement of
inducer motor ONLY.
INSTALLATION
SECTION I: MODELS 398A, 399A, 58DX, 58DXA, 58DXC,
58SX, 58SXA, AND 58SXC; 46-3/16-IN. TALL
CONDENSING GAS FURNACES
NOTE: If the inducer cover plate or wheel require replacement,
use inducer motor kit Part No. 309868-755.
This kit may be used on furnaces with inducer motor cover plate
Part No. 308118-402, 403, or 405. (See Fig. 1 and 2.) The cover
plate part no. is located on motor side of cover plate.
Step 1—Remove Old Motor Assembly
1. Turn off gas and electrical supplies to unit.
2. Remove control access door.
3. Disconnect wiring from motor.
4. Remove screw securing motor ground wire and inducer
control box ground wire (when used). The ground screw may
be located either on blower shelf or on top mounting bracket
of inducer assembly. (See Fig. 3.)
5. Remove screws securing left mounting bracket to collector
box and plastic inducer housing.
6. Remove screw securing top mounting bracket to coupling box.
(See Fig. 3.)
7. Remove 8 screws securing plastic cover plate to inducer
housing. Remove and save top mounting bracket. (See Fig. 3.)
8. Carefully remove motor assembly from inducer housing.
9. Loosen setscrew in inducer wheel and remove wheel.
NOTE: One of 3 bolts securing motor to the plastic inducer cover
plate threads into this plastic plate. Locate and mark this bolt
before proceeding.
10. Remove 3 bolts securing motor to inducer cover plate assem-
bly and remove motor.
See Table 1 for kit contents.
→ Table 1—Kit Contents
DESCRIPTION PART NO. QUANTITY
Motor HC27CB117 1
Capacitor HC91PD001 1
Slinger Ring* 308146-201 1
Foam Rubber Seal* 308588-204 1
Harness (Amp Connector) 320756-301 1
Harness (Molex Connector) 302755-301 1
Moisture Shield 316790-301 1
Installation Instructions
IIK 340M-40-14\
58D-11SI
1
*Parts for use on cover plate Part No. 308118-402 only.
Cancels: IIK 340M-40-4 IIK 340M-40-14
11-95
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. 535-807 Printed in U.S.A. Form 58D-11SI Pg 1 11-95 Replaces: 58M-18SI
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