Bryant 394HAD - Manual (Page 7)

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garden hose. Always use cold tap water. A mild liquid de-
tergent may be used if necessary. Spray water through the
filter in the opposite direction of airflow (through the cross-
mesh binding side). Allow filter to dry.
7. Reinstall the clean filter with its cross-mesh binding side
facing the furnace blower.
8. Put filter retainer back in the bracket opening and lock it in
place.
9. Replace the blower and control access doors and turn ON
electrical power to your furnace. (See Fig. 15, 16, and 21.)
NOTE: If side return ducts are used, two filters may be required
in some models. The procedure listed above may be used to re-
move side filters.
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●
DOWNFLOW FURNACES ONLY:
Two filters are located in the return-air plenum above the blower
(above line-of-sight) resting in the V-shaped channel on top of
the furnace. (See Fig. 22.)
1. Turn OFF electrical supply to the furnace. (See Fig. 18.)
2. Remove blower access door after removing 2 screws.
3. Remove the left side filter by tipping the filter top toward
the center—raise it from the V-shaped channel in which it
rests. (See Fig. 22 and 23.)
22 23
4. Lower filter down along side of the blower and remove
from the furnace.
5. To remove the second filter, lift from V-shaped channel and
remove the same way as left side filter.
6. Inspect the filters. If torn, replace the filter.
7. Wash the filters (if dirty) in a sink, bathtub, or outside with
a garden hose. Always use cold tap water. A mild liquid
detergent may be used if necessary. Spray water through
the filter in the opposite direction of airflow through the
cross-mesh binding side. Allow filter to dry.
8. Reinstall clean filters with the cross-mesh binding side fac-
ing the furnace blower.
9. Replace blower door (secure with 2 screws) and turn ON
electrical power to your furnace.
COMBUSTION AREA AND VENT SYSTEM
Inspect the combustion area and vent system before each heating
season. An accumulation of dirt, soot, or rust can mean a loss of
efficiency and improper performance. Buildups on the main
burners or pilot assembly can cause faulty firing. This “delayed
UPFLOW FURNACE FILTER TABLE
DOWNFLOW FURNACE FILTER TABLE
* Factory provided with the furnace. Filter may be field modified by cut-
ting as required. Alternate sizes and additional filters may be ordered
from your dealer.
ignition” is characterized by an alarmingly loud sound. If your
furnace makes a loud noise when the main burners are ignited
by the pilot, shut down the furnace—call your servicing dealer.
Refer to the lighting instructions label on the blower door for
shutdown procedures.
Use your flashlight and follow these steps for inspecting the
combustion area and vent system of your furnace:
1. Turn off the electrical supply to the furnace and remove the
access doors. (See Fig. 8 and 9, or 10.)
2. Carefully inspect the gas burner (see Fig. 24) for dirt, rust,
or scale. Then, inspect the relief box, flue connection area,
and the vent pipe for rust.
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NOTE: If dirt, rust, soot, or scale accumulations are found, call
your servicing dealer. DO NOT OPERATE THE FURNACE.
3. Inspect the vent pipe for a sag, holes, or a disconnection. A
horizontal vent pipe must slope upward. If rusty joints or
seams, or signs of water leakages are found call your dealer
for service.
4. Replace the access doors and restore electrical power to the
furnace. Be sure bottom door flange is inside of the furnace
casing. (See Fig. 15, 16, and 21.)
5. Start the furnace and observe its operation. If possible,
watch the burner flames. Are they burning bright blue? If
not (or if you suspect some other malfunction), call your
servicing dealer.
FURNACE
CASING
WIDTH
FILTER SIZE
FILTER TYPE Side Return Bottom Return
14-3/16 (1) 16 x 25 x 1 * (1) 14 x 25 x 1 * Cleanable
17-1/2 (1) 16 x 25 x 1 * (1) 16 x 25 x 1 * Cleanable
21 (1) 16 x 25 x 1 * (1) 20 x 25 x 1 * Cleanable
24-1/2 (2) 16 x 25 x 1 * (1) 24 x 25 x 1 * Cleanable
FURNACE
CASING WIDTH
FILTER
SIZE
FILTER
TYPE
14-3/16 (2) 16 x 20 x 1 * Cleanable
17-1/2 (2) 16 x 20 x 1 * Cleanable
21 (2) 16 x 20 x 1 * Cleanable
24-1/2 (2) 16 x 20 x 1 * Cleanable
WARNING
If holes are found—or if the vent pipe is obstructed
or is not connected—toxic fumes can escape into
your home. DO NOT OPERATE YOUR FURNACE.
Call your dealer for service. A failure to follow this
warning could result in personal injury or death.
!