Furnace Specifications ..................................................................................................................................... 4
Furnace Airflow Data ................................................................................................................................. 6
Safety Information ............................................................................................................................................. 7
Installation Requirements ................................................................................................................................. 7
Location .................................................................................................................................................... 8
Downflow Model Warning .................................................................................................................................. 8
Horizontal Installations ..................................................................................................................................... 8
Supply Air Plenum Installation ........................................................................................................................ 10
Circulating Air Supply ..................................................................................................................................... 10
Return Air ................................................................................................................................................. 11
Configuring the Blower .................................................................................................................................... 13
Selecting the Heating Airflow ................................................................................................................... 13
• Air From Inside ....................................................................................................................................... 15
Venting Requirements ...................................................................................................................................... 16
Vent Pipe Material .................................................................................................................................... 20
Vent Pipe Length and Diameter ................................................................................................................ 20
Vent Pipe Installation ............................................................................................................................... 21
Pipe Routing & Support ............................................................................................................................ 21
Horizontal Venting .................................................................................................................................... 22
Vertical Venting ........................................................................................................................................ 24
Vent Freezing Protection .......................................................................................................................... 24
Concentric Vent Termination .................................................................................................................... 24
Gas Supply and Piping ..................................................................................................................................... 25
Leak Check .............................................................................................................................................. 2 7
Manifold Pressure Adjustment ................................................................................................................. 27
Conversion ............................................................................................................................................... 28
High Altitude Conversion ................................................................................................................................. 28
High Altitude Application .......................................................................................................................... 28
Electrical Wiring .............................................................................................................................................. 29
Line Voltage Wiring .................................................................................................................................. 32
Low Voltage Wiring ................................................................................................................................... 32
Start-up and Adjustments ................................................................................................................................ 33
Start-Up Procedure .................................................................................................................................. 34
Configuring the Blower ............................................................................................................................. 3 5
Selecting Heat Airflow .............................................................................................................................. 3 5
Verifying Burner Operation ....................................................................................................................... 37
Description of Components .............................................................................................................................. 37
Maintenance ...................................................................................................................................................... 38
Location of Major Components ................................................................................................................. 39
Air Filter(s) ............................................................................................................................................... 40
Lubrication ............................................................................................................................................... 40
Condensate Drain Assembly .................................................................................................................... 40
Blower Compartment ................................................................................................................................ 40
System Operation Information ........................................................................................................................ 40
Sequence of Operation ............................................................................................................................ 40
Furnace Fails to Operate .......................................................................................................................... 42
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