Combustion Air Quality............................................ 5
Heating Load ........................................................... 5
Operation of Furnace During Construction ............. 6
Conventional Vent Systems - Confined Spaces...... 8
Conventional Vent Systems - Unconfined Spaces .. 10
Category IV Venting ................................................ 10
Condensate Disposal .............................................. 14
Plenums & Air Ducts................................................ 14
Supply Air Connections ........................................... 15
Acoustical Treatments ............................................. 15
General Requirements ............................................ 16
Upflow Furnaces...................................................... 16
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TABLE OF CONTENTS
Inducer & Venting Options....................................... 18
Accessories ............................................................. 20
Finish Flange ....................................................... 20
Bottom Panel Removal............................................ 22
Alternate Bottom Panel Removal ............................ 22
Leak Check.............................................................. 23
High Altitude Application (Natural Gas Only) .......... 24
Converting from Natural Gas to LP / Propane......... 27
Grounding................................................................ 28
Thermostat / Low Voltage Connections .................. 29
Heat Anticipator ....................................................... 29
Twinning................................................................... 29
Pre-Start Check List ................................................ 30
Start-up Procedures ................................................ 30
Verifying & Adjusting Input Rate.............................. 30
Verifying & Adjusting Temperature Rise.................. 31
Verifying Burner Operation ...................................... 31
Verifying Operation of the Supply Air Limit Switch .. 31
Heating Cycle .......................................................... 31
Cooling Cycle .......................................................... 31
Fan Mode ................................................................ 31
MAINTENANCE ......................................................... 32
................................... 30