To The Installer.............................................................................4
General .......................................................................................11
Leveling ......................................................................................11
Drain Pan....................................................................................13
Freeze Protection .......................................................................13
General .......................................................................................13
Vent/Flue Pipe ............................................................................15
Side Wall Vent Kit.......................................................................22
Wiring Harness ...........................................................................25
2
TABLE OF CONTENTS
Gas Control Valve.......................................................................28
Gas Piping Checks.....................................................................31
Ductwork-Airflow .....................................................................32
Ductwork ....................................................................................33
Drain Trap Priming......................................................................35
Furnace Operation......................................................................35
Furnace Start-Up........................................................................35
Furnace Shutdown .....................................................................35
Temperature Rise .......................................................................37
Power Up....................................................................................38
Cooling Mode .............................................................................39
Fan Only Mode ...........................................................................39
General .......................................................................................40
Pressure Switches......................................................................40
Flame Sensor..............................................................................40
MAINTENANCE ............................................................................40
Annual Inspection.......................................................................40
Filters ..........................................................................................40
Burners .......................................................................................41
TROUBLESHOOTING ..................................................................42
Fault Recall .................................................................................42
Diagnostic Chart.........................................................................43
WGFM195090S5C.........................................................................49
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