Carrier 58M 26SI Gas Furnace Owners Manual

Coupling Box Kit Cancels: IIK 340M-40-5 IIK 340M-40-10 7-95 Installation Instructions Part No. 320721-761, -762, -763, -764, -765, and -766 NOTE: Read the entire instruction manual before starting the installation. This symbol indicates a change since the last issue. SAFETY CONSIDERATIONS 320721-761 KIT PART NO. Table 1–Kit Usage UNIT 340MAV 350MAV 490AAV 024040 036040 024060 036060 048060 036080 048080 060080 048100 060100 060120 — 355MAV — 042060 042080 060080 060100 060120 042040 58MCA 58MXA 040-08 040-12 060-08 060-12 060-16 080-12 080-16 080-20 100-16 100-20 120-20 — 58MVP — 060-14 080-14 080-20 100-20 120-20 040-14 Installing and servicing 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 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 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. 320721-762 320721-763 320721-764 320721-765 320721-766 This coupling box kit contains the following items: Coupling box assembly Cold spot baffle Screw (No. 8AB X 1/2-in. long hex head) Gasket Installation Instructions 1 1 6 maximum 1 1 INSTALLATION Step 1–Remove Whole Cell Panel Assembly See Fig. 1 for furnace component locations. See Fig. 2 for an expanded view of heat system components. 1. Turn off gas and electrical supplies to furnace. 2. Remove main furnace door. Turn off gas and electrical supplies to unit before beginning any installation or modification. Follow operating instructions on label attached to furnace. Failure to follow this warning could result in electrical shock, fire, personal injury, or death. INTRODUCTION This instruction covers installation of the coupling box kit Part No. 320721-761, -762, -763, -764, -765, and -766 in multipoise, 40-in. tall, condensing gas furnaces. NOTE: A releasing agent such as PAM cooking spray or equivalent (must not contain corn or canola oil, aromatic or halogenated hydrocarbons) and RTV sealant (G.E. 162 or Dow-Corning 738) are required before starting installation. DO NOT substitute any other type of RTV sealant. DESCRIPTION AND USAGE Use this coupling box kit to replace failed coupling box assemblies.