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Installation Configurations - Whirlpool WFAU Installation Instructions Manual

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In a residential garage, a gas-fired furnace must be installed
so the burner(s) and the ignition source are located not less
than 18 in. above the floor. The furnace is to be located or
protected to avoid physical damage by vehicles.
WFAR, WFLR, WFAT, and WFLT models may be installed as
suspended units in the horizontal position. These furnaces
are not designed for direct attachment of suspension rods to
the furnace casing. See the "Installation Configurations"
section.
If the furnace is to be installed in an attic or other insulated
space, it must be kept free and clear of insulating materials.
Installation Clearances
A 2 in. minimum clearance is required in front for air openings
into the combustion chamber.
All servicing and cleaning of the furnace can be performed
from the front. If installed in a closet or utility room, provide 24
in. clearance in front for service if the door to the room is not
in line with the front of the furnace. Where servicing
clearances are greater than clearances to combustibles,
servicing clearances take precedence.
Minimum Clearance to Combustibles Chart
(all measurements in inches)
Upflow and Counterflow Installations
Cabinet
Front Back Top
Width
1
14.5
4
0
17.5
4
1
0
21.0
4
1
0
1
24.5
4
0
Horizontal Installations
(Models WFAT and WFLT only)
Cabinet
Width
Front Back
Vent
14.5
4
1
0
6
17.5
4
1
0
6
21.0
4
1
0
6
1
24.5
4
0
6
4
Sides
Vent
Left
2
3
1
6
3
1
6
2
2
3
1
6
2
0
2
1
6
0
Airflow
R to L
L to R
Top
Bottom
Top
2
3
2
0
1
2
2
2
0
1
2
1
0
1
2
1
0
1
Cabinet
Width
Front Back
14.5
4
1
17.5
4
1
1
21.0
4
24.5
4
1
1
May be 2" when Type B-1 vent pipe is used.
2
May be 1" when Type B-1 vent pipe is used.
3
Where values greater than 0 are shown, may be 0" when Type
B-1 vent pipe is used.
High Altitude Installations
This furnace is approved for operation at altitudes from 0 to
4,500 feet above sea level without any required modifications.
From 4,500 to 7,500 ft, the gas manifold pressure needs to be
adjusted according to the information shown in the Manifold
Pressure vs. Altitude charts.
Right
IMPORTANT:
0
For installations above 7,500 ft, the furnace input rate is to be
reduced per the requirements of the National Fuel Gas Code
0
(ANSI Z223.1/NFPA 54, latest edition), at the rate of 4 percent for
each 1,000 feet above sea level.
0
The furnace is not recommended for installation above 10,000 ft.
0

Installation Configurations

Models WFAU and WFLU must be installed only as an upflow
furnace. Models WFAT and WFLT may be installed as an upflow
or horizontal furnace. Models WFAR and WFLR may be installed
as either a counterflow or a horizontal furnace.
Models WFAR, WFLR, WFAT and WFLT furnaces can be
horizontally installed for airflow right to left or left to right.
Bottom
Upflow Installations
3
2
WFAU, WFLU, WFAT and WFLT model furnaces can be installed
with either a side or bottom air return. For bottom air return the
2
2
bottom air return knockout plate must be removed. For units that
do not include a side or bottom return filter rack, kit no.
0
AFILT524-1 (side return) or kit no. AFILT529-1 (bottom return) can
be used.
0
To provide sufficient filter area for installations requiring more
than 1600 CFM nominal air delivery, return air will have to be
brought through both sides of the furnace, or through one side
and the bottom, or an optional filter rack WAFILTHA7 may be
used.
Horizontal Installations
(Models WFAR and WFLR only)
R to L
Vent
Top
Bottom
0
6
2
1
3
0
6
2
1
2
2
0
6
1
0
0
6
2
1
0
Airflow
L to R
Top
Bottom
1
3
1
0
2
2
2
0
1
0
1
0

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This manual is also suitable for:

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