90 HORIZONTAL GAS FURNACE
INSTALLATION INSTRUCTIONS
GAS FURNACE SAFETY
Table of Contents
GAS FURNACE SAFETY................................................................1
INSTALLATION REQUIREMENTS ................................................3
Tools and Parts ............................................................................3
Location Requirements ................................................................3
Installation Configurations ...........................................................4
Airflow Conversion .......................................................................5
Duct Work Requirements.............................................................8
Electrical Requirements ...............................................................9
Gas Supply Requirements ...........................................................9
Venting Requirements..................................................................9
INSTALLATION INSTRUCTIONS ................................................10
Inspect Shipment .......................................................................10
Plan Vent System .......................................................................10
Determine Vent Pipe Direction...................................................12
Connect Venting.........................................................................14
Install Condensate Disposal.......................................................14
Install Duct Work ........................................................................15
Filter Specifications ....................................................................15
Make Electrical Connections .....................................................16
Make Gas Connections..............................................................16
Check the Furnace Input Rate ...................................................17
Adjust the Furnace Input Rate ...................................................17
Complete Installation..................................................................18
Sequence of Operation ..............................................................19
Controls ......................................................................................20
TROUBLESHOOTING ..................................................................20
ASSISTANCE OR SERVICE .........................................................23
Accessories ................................................................................23
46889B003
Whirlpool
®
Home Cooling and Heating
7901 S.W. 6th Court
Plantation, Florida 33324
Model
WFCH
You can be killed or seriously injured if you don't
immediately follow instructions.
You can be killed or seriously injured if you don't
follow instructions.
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:
