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Case 1: Furnace Located In An
Case 2: Furnace Located In A
Case 3: Furnace Located In A Confined Space,
Case 4: Furnace Located In A Confined Space,
Sequence of Operation if the Furnace
Circulating Air Blower and
FIELD SUPPLIED AND INSTALLED
Table of Contents
AIR CONDITIONING
INSPECTION/ACCESS PANEL
Vertical Termination of Combustion Air and
Horizontal Termination of Combustion Air and
Termination of Combustion Air and Ventilation
L.P
INTRODUCTION ....................................................................... 1
AFETY ..................................................................................... 1
afety Rules................................................................... 1
ODES....................................................................................... 3
FURNACE SIZING ..................................................................... 4
................................................................. 4
................................................... 4
LOCATION OF UNIT ................................................................. 5
General ......................................................................... 5
Other Considerations:................................................... 5
CLEARANCES ........................................................................... 6
UNIT DIMENSIONS................................................................... 6
DUCTWORK ............................................................................. 7
Guide: ........................................................................... 7
Ductwork Steps: ........................................................... 7
INSTALLATION POSITIONS....................................................... 8
Inducer Blower Rotation ............................................. 9
Inducer Rotation Steps ............................................... 9
Non-Suspended Installation......................................... 9
Suspended Installation................................................. 9
Upflow Installation...................................................... 10
Downflow Installation ................................................ 11
Horizontal Installation ................................................ 12
AIR FOR COMBUSTION .......................................................... 13
Unconfined Space .......................................... 13
Confined Space .............................................. 13
Outdoor Air From Attic Or Crawl Space ...... 13
Outdoor Air Ducted Horizontally.................. 13
FURNACE VENTING ................................................................ 14
Direct Venting Pipe Connection.................................. 14
Combustion Air Inlet Piping........................................ 14
Air Filters....................................................................... 15
Exhaust Vent Piping...................................................... 15
Guidelines...................................................................... 16
Joining Pipe And Fittings.............................................. 16
Calculating Piping Length............................................ 18
Pipe Using A Concentric Venting Kit.......................... 19
Exhaust Vent................................................................. 20
Exhaust Vent................................................................. 21
Non Direct Vent Furnace Installations......................... 22
Direct Vent Piping Termination................................... 17
CONDENSATE DRAINS............................................................. 25
Drain Hose Installation.................................................. 25
Condensate Drain Installation....................................... 27
GAS SUPPLY ............................................................................. 28
Gas Piping ..................................................................... 28
Leak Testing ................................................................. 28
High Altitude ................................................................ 29
CONVERSIONS ......................................................................... 29
Natural to L.P. Gas ....................................................... 29
. to Natural Gas ........................................................ 29
Conversion Steps .......................................................... 29
HIGH ALTITUDE & AIRFLOW SPECIFICATION TABLES ........... 30
ELECTRICAL SPECIFICATIONS................................................... 32
Furnace Connection ..................................................... 32
Low Voltage Wiring ..................................................... 32
Thermostat ................................................................... 33
Thermostat Location..................................................... 33
Thermostat Heat Anticipator Setting ......................... 33
START UP PROCEDURES ......................................................... 34
To Start The Furnace: ................................................... 34
To Shut Down The Furnace:......................................... 34
Sequence of Operation ............................................... 34
Does Not Light or Detect Flame ................................. 34
Setting The Manifold Gas Pressure ............................. 34
Checking Furnace Input ............................................... 34
Temperature Rise Check............................................... 35
Temperature Rise Check............................................... 35
AIR FLOW................................................................................. 35
Calculating Airflow....................................................... 35
Adjusting Dip Switches................................................. 36
ADJUSTING BLOWER SPEEDS ................................................. 37
Cooling Mode ............................................................... 37
Heating Mode............................................................... 37
How To Remove The Blower ....................................... 37
How To Install The Blower........................................... 37
MAINTENANCE ....................................................................... 38
Air Filter......................................................................... 38
Lubrication ................................................................... 38
Vent Connector............................................................. 38
Operating Tips ............................................................. 38
ANNUAL INSPECTION/SERVICE ............................................... 38
Heat Exchanger............................................................. 38
Burners ......................................................................... 38
Induced Blower............................................................. 38
Circulating Fan ............................................................. 38
Electrical ....................................................................... 39
Furnace Operation ....................................................... 39
OPTIONAL ACCESSORIES......................................................... 39
Electronic Air Cleaner................................................... 39
Humidifier/ Electronic Air Cleaners ............................. 39
TROUBLESHOOTING ............................................................... 39
WIRING DIAGRAM .................................................................. 43