Whirlpool WGFM29 Installation Instructions Manual page 32

Minimum Filter Requirements Chart
Upflow—Cooling Airflow Requirement (CFM)—Permanent Minimum Filter Area (sq. in.) Based On 600 ft (182.9 m) Per
Minute Filter Face Velocity
Input Airflow 600
0453 376*
0704 -
0905 -
1155 -
Counterflow—Cooling Airflow Requirement (CFM)—Permanent Minimum Filter Area (sq. in.) Based On 600 ft (182.9 m)
Per Minute Filter Face Velocity
0704 -
0905 -
*Minimum filter area dictated by heating airflow requirement.
Upright Installations
Depending on the installation and/or customer preference, filters
can be installed in the central return register or a side panel
external filter rack kit (upflows). As an alternative, a media air filter
or electronic air cleaner can be used as the requested filter.
The following illustrations show possible filter locations.
Filter Locations—Possible Upright Upflow
A
B
D
A. Central return grille C. Airflow
B. Filter D. Side return external filter rack kit (either side)
32
800 1,000
384 480
- 627*
- -
- -
- 320*
- -
C
B
1,200 1,400
576 -
627* 672
836* 836*
940* 940*
320* 336
427* 427*
Filter Locations—Possible Upright Counterflow
A
B
F
E
D
A. Filter access door
B. Filter
C. Central return grille
Horizontal Installations
Filters must be installed in either the central return register or in
the return air ductwork.
1,600 2,000
- -
768 -
836* 960
940* 960
384 -
427* 480
B
B C
D. Airflow
E. Filter support bracket (provided)
F. Return duct