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Start-Up Procedure And Adjustment; Heat Anticipator Setting; Drain Trap Priming; Furnace Operation - Whirlpool WGFD293 Installation Instructions Manual

93% and 95% 2-stage variable speed gas furnace
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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)

START-UP PROCEDURE AND ADJUSTMENT

This furnace must have a 115 VAC power supply properly
connected and grounded. Proper polarity must be maintained for
correct operation. In addition to the following start-up and
adjustment items, refer to further information in "Operational
Checks."

Heat Anticipator Setting

The heat anticipator in the room thermostat must be correctly
adjusted to obtain the proper number of cycles per hour and to
avoid "overshooting" of the setting. Set the heat anticipator
setting to 0.7 amps. Follow the thermostat manufacturer's
instructions on how to adjust the heat anticipator setting.

Drain Trap Priming

The drain trap must be primed prior to the furnace start-up. To
prime, fill the drain trap with water. This ensures proper furnace
drainage upon start-up and avoids the possibility of flue gases
escaping through the drain system.

Furnace Operation

1. Purge the gas lines of air prior to start-up.
NOTE: Be sure not purge lines into an enclosed burner
compartment.
2. Check for leaks using an approved chloride-free soap and
water solution, an electronic combustible gas detector or
other approved method.
C
B
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.
3. Verify that all required kits (propane gas, high altitude, etc.)
have been appropriately installed.

Furnace Start-Up

1. Close the manual gas shutoff valve external to the furnace.
2. Turn off the electrical power to the furnace.
3. Set the room thermostat to the lowest possible setting.
4. Remove the burner compartment door.
NOTE: This furnace is equipped with an ignition device which
automatically lights the burner. Do not try to light the burner by hand.
5. Move the furnace gas control valve manual control to the Off
position.
6. Wait 5 minutes, and then check for a gas odor.
NOTE: Check near the floor as some types of gas are heavier than air.
7. If a gas odor is detected, follow the instructions in "Gas
Furnace Safety Precautions" in this manual.
8. If no gas odor is detected, move the furnace gas control valve
manual control to the On position.
9. Replace the burner compartment door.
10. Open the manual gas shutoff valve external to the furnace.
11. Turn on the electrical power to the furnace.
12. Adjust the thermostat to a setting above room temperature.
13. After the burners are lit, set the thermostat to the desired
temperature.
B
B
C
D. Airflow
E. Filter support bracket (provided)
F. Return duct
33

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Wgfm295