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Table of Contents
Furnace Specifications ............................................................................................................. 3
Safety Information ............................................................................................................. 3
Capacities-Furnace Airflow Data ..................................................................................... 4
Installation Requirements ........................................................................................................ 5
Horizontal Furnace Installation ........................................................................................ 5
Venting and Combustion Air Requirements ....................................................................... 7
General ............................................................................................................................. 7
Installation in an Unconfined Space ................................................................................. 7
Installation in a Confined Space ....................................................................................... 8
Air From Inside ....................................................................................................... 8
Outdoor Air Using Vertical Ducts .......................................................................... 9
Air Directly Through an Exterior Wall .................................................................... 9
Outdoor Air Using a Crawl Space and Ventilated Attic ......................................... 9
Outdoor Air Using Horizontal Ducts ...................................................................... 9
Venting Requirements .............................................................................................................. 9
General ............................................................................................................................. 9
Category I - Common Venting ....................................................................................... 10
Circulating Air Supply ............................................................................................................ 11
General ........................................................................................................................... 11
Return Air ........................................................................................................................ 12
Gas Supply and Piping ........................................................................................................... 12
General ........................................................................................................................... 13
Leak Check .................................................................................................................... 13
Conversion ..................................................................................................................... 15
High Altitude Conversion ...................................................................................................... 15
High Altitude Application ................................................................................................. 15
Pressure Switch Conversion for High Altitude Applications ......................................... 15
Natural Gas High Altitude Conversion ........................................................................... 15
LP/Propane Gas Sea Level and High Altitude Conversion ........................................... 15
Electrical Wiring ....................................................................................................................... 16
General ........................................................................................................................... 16
Line Voltage Wiring ......................................................................................................... 16
Low Voltage Wiring ......................................................................................................... 18
Start-up and Adjustments ..................................................................................................... 18
General ........................................................................................................................... 18
Start-up Procedures ....................................................................................................... 19
Verifying and Adjusting Firing Rate ................................................................................ 19
Verifying and Adjusting Temperature Rise .................................................................... 21
Verifying Burner Operation ............................................................................................. 21
Verifying Operation of the Supply Air Limit Switch ........................................................ 23
Wiring Diagram ........................................................................................................................ 20
Description of Components .................................................................................................. 23
Maintenance ............................................................................................................................. 23
Vent System ................................................................................................................... 23
Air Filter(s) ...................................................................................................................... 24
Lubrication ....................................................................................................................... 24
Blower Compartment ...................................................................................................... 24
Heat Exchanger and Burner Maintenance .................................................................... 24
Cleaning of Flue Passages ............................................................................................ 24
Cleaning of Burners ........................................................................................................ 25
System Operation Information ............................................................................................. 25
General ........................................................................................................................... 25
Sequence of Operation .................................................................................................. 26
Heating Mode ....................................................................................................... 26
Cooling Mode ........................................................................................................ 26
Fan Mode ............................................................................................................. 27
Furnace Fails to Operate ............................................................................................... 27
Twinning .......................................................................................................................... 27
Installation/Performance Check List ..................................................................... Back Page
