Comfort-Aire GDD95A Downflow Furnaces - Manual (Page 3)

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IMPORTANT SAFETY INFORMATION ........4
Gas Supply & Piping ..................................4
Venting System .........................................4
Clearances to Combustibles ......................5
Sources of Corrosion .................................5
Filter ...........................................................5
Flood Damage ...........................................5
ABOUT THE FURNACE ...............................6
Introduction ................................................6
Category I Furnaces .................................6
Category IV Furnaces ..............................6
Filter ...........................................................6
Thermostat ................................................6
Furnace Location .......................................6
COMPONENT LOCATIONS FOR
NON-CONDENSING TYPE FURNACES ......7
Single Stage Models ..................................7
COMPONENT LOCATIONS FOR
CONDENSING TYPE FURNACES ...............8
Single Stage Models ..................................8
Two-Stage Models .....................................8
STARTUP & SHUTDOWN ............................9
Starting the Furnace ..................................9
Shutting Down the Furnace .......................9
Troubleshooting .........................................9
MAINTENANCE & INSPECTION ............... 10
Furnace & Air Ducts .................................. 10
Venting System ......................................... 10
Blower & Filter .......................................... 10
Burner Operation ...................................... 10
New Construction ..................................... 10
Maintenance Table ................................... 10
TABLE OF CONTENTS