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Table Of Contents - Whirlpool WGFD28 Installation Instructions Manual

80% 2-stage variable speed gas furnace gold models
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GAS FURNACE SAFETY PRECAUTIONS ....................................3
Additional Safety Considerations.................................................4
PRODUCT DESCRIPTION AND APPLICATION ..........................4
Shipping Inspection .....................................................................4
Electrostatic Discharge (ESD) Precautions..................................4
To The Installer.............................................................................5
Product Application......................................................................5
Clearances and Accessibility .......................................................7
Furnace Suspension ....................................................................7
Existing Furnace Removal ...........................................................7
Thermostat Location ....................................................................8
Category I Venting-Vertical Venting...........................................8
ELECTRICAL CONNECTIONS ....................................................13
Wiring Harness ...........................................................................13
115-Volt Line Connections.........................................................13
Junction Box Relocation............................................................13
24-Volt Thermostat Wiring .........................................................14
24-Volt Dehumidistat Wiring ......................................................15
Fossil Fuel Applications .............................................................15
Electronic Air Cleaner)................................................................16
GAS SUPPLY AND PIPING..........................................................16
High Altitude Derate ...................................................................17
Propane Gas Conversion...........................................................17
Gas Piping Connections ............................................................17
Propane Gas Tanks and Piping .................................................19
CIRCULATING AIR AND FILTERS..............................................20
Ductwork-Airflow .....................................................................20
Ductwork ....................................................................................20
START-UP PROCEDURE AND ADJUSTMENT .........................21
Heat Anticipator Setting.............................................................21
Furnace Operation .....................................................................21
Furnace Start-Up .......................................................................21
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Table of Contents

Furnace Shutdown .....................................................................21
Gas Supply Pressure Measurement ..........................................21
Temperature Rise .......................................................................24
Circulator Blower Speeds ..........................................................24
Blower Heat Off Delay Timings ..................................................27
NORMAL SEQUENCE OF OPERATION .....................................27
Power Up....................................................................................27
Heating Mode.............................................................................27
Cooling Mode .............................................................................27
Fan Only Mode ...........................................................................28
Operational Checks....................................................................28
SAFETY CIRCUIT DESCRIPTION ...............................................28
Integrated Control Module .........................................................28
Primary Limit Control..................................................................28
Auxiliary Limit Controls...............................................................28
Rollout Limit Controls.................................................................28
Pressure Switches......................................................................28
Flame Sensor..............................................................................28
MAINTENANCE ............................................................................29
Annual Inspection.......................................................................29
Filters ..........................................................................................29
Burners .......................................................................................29
Induced Draft and Circulator Blowers........................................29
Flame Sensor (Qualified Servicer Only)......................................29
Flue Passages (Qualified Servicer Only) ....................................30
Before Leaving an Installation....................................................30
Repair and Replacement Parts ..................................................30
TROUBLESHOOTING ..................................................................30
Electrostatic Discharge (ESD) Precautions................................30
Fault Recall .................................................................................30
Resetting from Lockout..............................................................30
Status Codes..............................................................................31
Diagnostic Chart.........................................................................31
WIRING DIAGRAM .......................................................................38
ASSISTANCE OR SERVICE .........................................................39

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