Carrier Owners Manual - 1 of 4
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PSC Inducer Motor Kit Cancels: IIK 340M-40-42 IIK 340M-40-51 7-98 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.
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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 CAUTION. These words are used with the safety-alert symbol. DANGER 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. See Table 1 for kit contents. 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. Table 1–Kit Contents DESCRIPTION Motor Capacitor Slinger Ring* Foam Rubber Seal* Harness (Amp Connector) Harness (Molex Connector) Moisture Shield Installation Instructions PART NO. HC27CB120 HC91PD001 308146-201 308588-204 320756-301 320755-301 316790-301 IIK 340M-40-51/ 58M-67SI QUANTITY 1 1 *Parts for use on cover plate Part No. 308118-402 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. 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. Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. INTRODUCTION This instruction covers installation of the permanent split capacitor (PSC) inducer motor kit Part No. 317292-753 for use in condensing 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.