Air Filter Arrangement - Bryant 394HAD Service And Maintenance Procedures Manual

WARNING: Turn off the gas and electrical supplies to
the unit before performing any maintenance or service.
Follow the operating instructions on the label attached to
the furnace. A failure to follow this warning could result
in personal injury.
WARNING: Never store anything on, near, or in contact
with the furnace, such as:
1. Spray or aerosol cans, rags, brooms, dust mops,
vacuum cleaners, or other cleaning tools.
2. Soap powders, bleaches, waxes or other cleaning
compounds, plastic or plastic containers, gasoline, kero-
sene, cigarette lighter fluid, dry cleaning fluids, or other
volatile fluids.
3. Paint thinners and other painting compounds, paper
bags or other paper products.
A failure to follow this warning could result in corrosion
of the heat exchanger, fire, personal injury, or death.
The minimum maintenance that should be performed on this
equipment is as follows:
1. Check and clean air filter each month or more frequently if
required. Replace if torn.
2. Check blower motor and wheel for cleanliness and lubrica-
tion each heating and cooling season. Clean and lubricate as
necessary.
3. Check electrical connections for tightness and controls for
proper operation each heating season. Service as necessary.
CAUTION: As with any mechanical equipment, per-
sonal injury can result from sharp metal edges, etc.,
therefore, be careful when removing parts.
A. Air Filter Arrangement
The air filter arrangement may vary depending on the application.
Refer to Table 1 or 2 for filter size information.
TABLE 1—FILTER SIZE INFORMATION FOR DOWN-
FLOW FURNACE (IN.)
FURNACE FILTER QUANTITY
CASING WIDTH
14-3/16 (2) 16 X 20 X 1
17-1/2 (2) 16 X 20 X 1
21 (2) 16 X 20 X 1
24-1/2 (2) 16 X 20 X 1
TABLE 2—FILTER SIZE INFORMATION FOR UPFLOW
FURNACE (IN.)
FILTER QUANTITY AND SIZE
FURNACE
CASING WIDTH
Side 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
* Factory provided with the furnace. Filters may be field modified by cutting as
required.
FILTER
AND SIZE TYPE
Cleanable
Cleanable
Cleanable
Cleanable
FILTER
TYPE
Bottom Return
WARNING: Never operate unit without a filter or with
filter access door removed. A failure to follow this
warning could result in fire, personal injury, or death.
1. Downflow
Each furnace requires 2 filters which are installed in the
return-air duct. (See Fig. 3.)
INSTALLATION
POSITION
OF FILTERS
RETURN-AIR
PLENUM
ACCESS DOOR
Fig. 3—Filter Positions
To remove filters for cleaning or replacement, proceed as
follows:
a. Disconnect electrical power before removing access
door.
b. Remove blower access door after removing 2 screws.
c. Reach up behind top plate, tilt filters toward center of
return-air plenum, remove filters, and clean as needed.
Replace if torn.
d. Furnaces are equipped with permanent, washable filters.
Clean filters with tap water. Spray water through filter in
opposite direction of airflow.
e. Rinse and let dry. Oiling or coating of filters is not
recommended or required.
f. Reinstall filters.
g. Replace access door and secure with 2 screws.
h. Restore electrical power to furnace.
2. Upflow
Each furnace requires 1 or 2 filters which are installed in the
blower compartment. (See Fig. 4.)
To remove filters for cleaning or replacement, proceed as
follows:
a. Disconnect electrical power before removing access
doors.
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AIRFLOW
A88486