Carrier 58M 31SI Gas Furnace Owners Owners Manual - English

High Output PSC Inducer Motor Housing Assembly Kit Cancels: New IIK 340M-40-17 6-96 Installation Instructions Part No. 320725-754 NOTE: Read the entire instruction manual before starting the installation. SAFETY CONSIDERATIONS Installing and serving 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 the literature, on tags, and on labels attached to the unit. Follow all safety codes. Wear safety glasses and work gloves. Have 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. Table 1–Kit Usage MODEL NUMBER 340MAV 350MAV 490AAV 345MAV 58MCA 58MXA 58MSA SERIES D A 131 101 USED ON 060120 060120 120-20 120-20 DESCRIPTION AND USAGE Use this PSC inducer motor kit to replace a failed inducer motor assembly. This kit contains the following items: Inducer assembly 1 Installation Instructions 1 NOTE: Inducer assembly consists of motor and fan, capacitor, wheel, motor mount, inducer cover, inducer housing, vent cap, and vent clamp. INSTALLATION Step 1–Remove Old Motor Assembly 1. Turn off gas and electrical supplies to unit. 2. Remove main furnace door. 3. Remove drain tube from inducer motor mounting cover plate. 4. Remove pressure switch tubes. (See Fig. 1.) a. Remove tube attached to pressure switch from collector box. b. Remove tube attached to pressure switch from burner enclosure and gas valve. 5. Remove screw securing pressure switch and capacitor to inducer housing. Before beginning any installation or modification, be sure the main electrical disconnect switch is in the OFF position. Electrical shock can cause personal injury 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 high output permanent split capacitor (PSC) inducer motor kit Part No. 320725-754 on models 340MAV, 345MAV, 350MAV, 490AAV, 58MCA, 58MSA, and 58MXA Condensing Gas Furnaces. See Table 1 for kit applicability. 6. Disconnect motor lead connector from control center. 7. Using backup wrench, disconnect gas supply pipe from gas valve. Remove wires from gas valve. Note location for reassembly. Remove burner box cover. Remove screws securing manifold to burner box. Remove manifold, orifices, and gas valve as 1 assembly. 8. 9. 10. 11. 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, Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 PC 101 Catalog No. 535-822 Printed in U.S.A. Form 58M-31SI Pg 1 6-96 Replaces