Carrier Owners Manual - Enlarge page 1 of 4
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Coupling Box Kit Cancels: IIK 340M-40-20 IIK 340M-40-27 8-96 Part No. 320721-761, -762, -763, -764, -765, -766, -767, and -768 NOTE: Read the entire instruction manual before starting the installation. This symbol indicates a change since the last issue. SAFETY CONSIDERATIONS Installing and servicing 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 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. 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. Installation Instructions Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. This instruction covers installation of the coupling box kit Part No. 320721-761, -762, -763, -764, -765, -766, -767, and -768 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, G.E. 6702, or DowCorning 738) are required before starting installation. DO NOT substitute any other type of RTV sealant. G.E. 162 (P771-9003) is available through RCD in 3-oz. tubes. INTRODUCTION Table 1–Kit Usage UNIT KIT PART NO. 340MAV 350MAV 490AAV Size Series 024040 All 036040 024060 036060 All 048060 036080 048080 All 060080 048100 All 060100 060120 A, B, C — 060120 D 060140 All 345MAV Size Series 024040 A 036040 024060 036060 A 048060 036080 048080 A 060080 048100 A 060100 — — 060120 A — 355MAV Size — 042060 042080 060080 060100 — 042040 060120 — All Series Size 040-08 040-12 060-08 060-12 060-16 080-12 080-16 080-20 100-16 100-20 120-20 120-20 140-20 58MCA 58MXA Series All All 58MSA Size 040-08 040-12 060-08 060-12 060-16 080-12 080-16 080-20 100-16 100-20 — — 120-20 — 101 Series 101 101 060-14 080-14 080-20 100-20 — 040-14 120-20 — All All 58MVP Size — All Series 320721-761 320721-762 320721-763 320721-764 320721-765 320721-766 320721-767 320721-768 All All All All All All 101, 111, 121 — 131 All 101 101 All All 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. 565-846 Printed in U.S.A. Form 58M-42SI Pg 1 8-96 Replaces: 58M-34SI Tab 6a 8a This coupling box kit contains the following items.