COMFORT-AIRE GDD80A Manuals

507712-01 Page 1 of 36 Issue 1642 Table of Contents Unit Dimensions ............................................................2 Parts Arrangement.........................................................3 GDD80A Gas Furnace...................................................4 Shipping and Packing List .............................................4 Safety Information .........................................................4 Use of Furnace as a Construction Heater .....................5 General ..........................................................................6 Combustion, Dilution & Ventilation Air ...........................6 Setting Equipment .........................................................9 Filters ...........................................................................12 Duct System ................................................................12 Venting.........................................................................12 Gas Piping ...................................................................20 Electrical ......................................................................22 Wiring Diagrams ..........................................................24 Unit Start-Up ................................................................27 Other Unit Adjustments................................................29 Service.........................................................................31 Repair Parts List ..........................................................34 Start-Up & Performance Check List ............................35 This manual must be left with the homeowner for future reference. INSTALLATION INSTRUCTIONS GDD80A Warm Air Gas Furnace Downflow Air Discharge This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to the potential for personal injury or death. Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a licensed professional installer (or equivalent), service agency or the gas supplier. WARNING As with any mechanical equipment, personal injury can result from contact with sharp sheet metal edges. Be careful when you handle this equipment. CAUTION (P) 507712-01 *P507712-01* Manufactured By Comfort-Aire / Century 1900 Wellworth Ave. Jackson, MI 49203