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Alternate Combustion Air Intake Location - Whirlpool WGFD293 Installation Instructions Manual

93% and 95% 2-stage variable speed gas furnace
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Alternate Vent/Flue Location—Upflow
A. Vent/flue pipe
B. Screw locations (4)
C. Plastic plug—alternate vent/flue location
Alternate Vent/Flue Location—Counterflow/Upright
(Upflow Similar)
A. Plastic plug from drain kit bag
B. Vent/flue pipe
Alternate Vent/Flue Location—Counterflow
A. Vent/flue pipe
D. Plastic plug—alternate vent/flue location
B. Screw locations (4)
E. Rubber elbow
C. Screw locations (3)
F. Induced draft blower
Alternate Vent/Flue Location—Upflow /Horizontal
(Counterflow Similar)
A
A. Rubber coupling
B. Vent/flue pipe
14
A
B
C
D
E
D. Rubber elbow
E. Induced draft
blower
A
B
C
D
C. Rubber elbow
D. Induced draft blower
A
B
C
D
E
F
B C
C. Induced draft blower

Alternate Combustion Air Intake Location

The alternate combustion air intake location consists of a large,
unobstructed hole (alternate vent connection is aligned with the
induced draft blower). To use the alternate combustion air intake
location, refer to the following steps and the "Alternate
Combustion Air Intake Location" illustration.
1. Remove and save the 4 screws securing the combustion air
intake coupling to the base pan.
2. Remove the 3 screws securing the furnace's internal
combustion air intake pipe to the induced draft blower deck.
3. Remove the combustion air intake pipe from the furnace and
cut the pipe at the base pan coupling.
4. Save the base pan coupling and gasket from the induced
draft blower deck coupling for use in the alternate location.
Discard the remaining pipe.
5. Remove the plastic plug from the alternate combustion air
intake location.
6. Relocate and install the plastic plug in the standard air intake
location (base pan).
7. Insert the plastic plug (included in the drain kit bag) into the
remaining hole in the induced draft blower deck.
8. With the gasket facing the cabinet side panel and the flange's
flat spot facing forward, secure the combustion air intake
coupling to the cabinet using the screws removed in Step 1
or with field-supplied ³⁄₈" #8 self-drilling screws.
CAUTION
Be sure not to damage internal wiring or other
components when reinstalling coupling and screws.
9. For nondirect vent installations installed horizontally, a
minimum of one 90° elbow should be installed on the
combustion air intake coupling to guard against inadvertent
blockage.
NOTE: No elbow is required on the alternate combustion air
intake of upright installations, however, a minimum clearance
of 2" (5.1 cm) is required to assure proper air supply.
10. For direct vent installations, secure field-supplied combustion
air intake pipe directly to the air intake coupling.
NOTE: A PVC coupling or elbow is required on counterflow
furnaces.
Alternate Combustion Air Intake Location—Counterflow
A
F
E
A. Section of pipe to be
D. Plastic plug—alternate combustion air
cut.
intake location
B. Screw locations (4)
E. Screw locations (3)
C. 2" (5.1 cm) minimum
F. Plastic plug from drain kit bag
B
C
D

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Wgfm295