90+ GAS FURNACE INSTALLATION INSTRUCTIONS
GAS FURNACE SAFETY
Table of Contents
GAS FURNACE SAFETY................................................................1
INSTALLATION REQUIREMENTS................................................3
Tools and Parts ............................................................................3
Location Requirements................................................................4
Installation Configurations ...........................................................5
Ductwork Requirements ..............................................................5
Electrical Requirements ...............................................................6
Gas Supply Requirements...........................................................6
Venting Requirements..................................................................6
INSTALLATION INSTRUCTIONS..................................................8
Inspect Shipment .........................................................................8
Plan Vent System.........................................................................8
Determine Vent Pipe Direction...................................................10
Install Ductwork..........................................................................17
Filter Specifications....................................................................17
Make Electrical Connections .....................................................18
Make Gas Connections..............................................................19
Check the Furnace Input Rate (if required)................................20
Adjust the Furnace Input Rate (if required) ................................20
Complete Installation..................................................................21
Shut Down..................................................................................21
SEQUENCE OF OPERATION ......................................................22
Heating Cycle .............................................................................22
Fan On Cycle..............................................................................22
Cooling Cycle .............................................................................22
CONTROLS ...................................................................................23
TROUBLESHOOTING ..................................................................24
ASSISTANCE OR SERVICE.........................................................27
Accessories ................................................................................27
46948B008
Whirlpool
®
Home Cooling and Heating
14610 Breakers Drive
Jacksonville, FL 32258
Whirlpool
®
and Whirlpool Gold
®
Models
WFCU, WFCC, WGFDC, WGFDU
You can be killed or seriously injured if you don't immediately
You
can be killed or seriously injured if you don't
follow
All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what can
happen if the instructions are not followed.
Your safety and the safety of others are very important.
We have provided many important safety messages in this manual and on your appliance. Always read and obey all safety
messages.
This is the safety alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and others.
All safety messages will follow the safety alert symbol and either the word “DANGER” or “WARNING.”
These words mean:
follow instructions.
instructions.
DANGER
WARNING
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