Whirlpool WFCU Installation Instructions Manual page 11

90+ gas furnace
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Non-Direct Vent Installation - Upflow Models
Refer to appropriate tables for proper pipe size, vent length
and the number of elbows allowed.
Refer to the "Materials" section for the proper venting
material.
An inlet air restrictor plate found in the plastic bag containing
these Installation Instructions and the User's Information
Manual must be installed in all non-direct vent installations.
See the "Inlet Air Restrictor Plate" section. Attach a 90° elbow
(not supplied) to the inlet coupler and install the inlet air
restrictor plate inside the elbow.
The flue pipe screen, designed to keep objects out of the flue
pipe (see "Flue Pipe Screen" section), should be installed at
the termination of the flue pipe.
Non-Direct Vent Upflow - Horizontal Venting
Run Ptich = 1/4"
Per Foot Min.
1
2
3
1. Flue pipe
4. Flue pipe screen (inside flue pipe)
2. Air intake pipe
5. Inlet air restrictor plate
3. Condensate collar
6"
Height to Provide
12" Clearance to
Max. Snow Level.
(inside intake pipe or elbow)
Non-Direct Vent Upflow - Vertical Venting
4
5
7
1. Flue pipe screen
(inside flue pipe)
2. Storm collar
3. Flashing
4. Flue pipe
10 Ft.
Min.
2 Ft.
Min.
Run Pitch = 1/4"
Per Foot Min.
5. Inlet air restrictor plate
(inside intake pipe or elbow)
6. Air intake pipe
7. Condensate collar
1
2
3
4
5
6
11

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