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Table of Contents
Furnace Specifications ............................................................................................................ 4-5
Furnace Airflow Data .......................................................................................................... 6-7
Installation Requirements .......................................................................................................... 8
Supply Air Plenum Installation ..................................................................................................9
Installation on a Concrete Slab ............................................................................................. 9
Installation on a Combustible Floor....................................................................................... 9
Circulating Air Supply............................................................................................................... 10
Return Air ............................................................................................................................ 11
Venting and Combustion Air Requirements .......................................................................... 11
Air Requirements for One-Pipe Installation ........................................................................ 13
Installation in An Unconfined Space ................................................................................... 13
Installation in A Confined Space ......................................................................................... 13
• Air From Inside .................................................................................................................. 13
• Air Directly Through An Exterior Wall ............................................................................... 14
• Outdoor Air Through Vertical Openings or Ducts ............................................................. 14
• Outdoor Air Through Horizontal Openings or Ducts ......................................................... 14
Venting Requirements .............................................................................................................. 14
Vent Pipe Material ............................................................................................................... 14
Vent Pipe Length and Diameter .......................................................................................... 14
Vent Pipe Installation ..........................................................................................................15
Pipe Routing & Support ....................................................................................................... 15
Location of Outdoor Terminations....................................................................................... 18
Horizontal Venting ............................................................................................................... 19
Vertical Venting ................................................................................................................... 20
Vent Freezing Protection ..................................................................................................... 20
Concentric Vent Termination............................................................................................... 20
Drainage of Condensate From Furnace ................................................................................. 21
Gas Supply and Piping ........................................................................................................ 22
Leak Check.......................................................................................................................... 22
Conversion........................................................................................................................... 23
High Altitude Application ..................................................................................................... 23
Natural Gas High Altitude Conversion ................................................................................ 23
LP/Propane Gas Sea Level and High Altitude Conversion ................................................ 23
Electrical Wiring ........................................................................................................................ 24
Line Voltage Wiring .............................................................................................................24
Low Voltage Wiring ............................................................................................................. 25
Start-up and Adjustments......................................................................................................... 25
Start-Up Procedure..............................................................................................................26
Verifying and Adjusting Firing Rate..................................................................................... 26
Verifying and Adjusting Temperature Rise ......................................................................... 27
Verifying Burner Operation .................................................................................................. 27
Verifying Operation of the Supply Air Limit Switch ............................................................. 29
Description of Components ..................................................................................................... 29
Maintenance ............................................................................................................................... 31
Combustion Air and Vent System ....................................................................................... 31
Air Filter(s) ........................................................................................................................... 31
Lubrication ........................................................................................................................... 31
Condensate Drain Assembly ............................................................................................... 31
Blower Compartment........................................................................................................... 31
Heat Exchanger and Burner Maintenance .......................................................................... 31
Location of Major Components ........................................................................................... 32
System Operation Information ................................................................................................. 31
Sequence of Operation ....................................................................................................... 33
Furnace Fails to Operate .................................................................................................... 34
Twinning of Two Furnaces .................................................................................................. 34
Installation/Performance Checklist ......................................................................................... 35