Bryant 349MAV - Manual (Page 8)

SHUTTING DOWN YOUR FURNACE
Should you ever suspect a malfunction in your furnace, you will
need to turn the furnace OFF. The following procedures must
be followed:
1. Set your room thermostat to the lowest temperature set-
3. Tlirn OFF the electrical power to your furnace. (See Figure
13.)
4. Thrn the control knob on the gas valve to the OFF position.
(See Figure 14.)
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5. If the furnace is being shut down because of a malfunction,
call your dealer as soon as possible.
. A
CAUTION:
Furnace is not to be installed, operated, and
then turned off and left turned off in an unoccupied struc­
ture during winter. (See winterizing procedures in mainte­
nance section).
PERFORMING ROUTINE MAINTENANCE
With proper maintenance and care, your furnace will operate
economically and dependably. Instructions for basic mainte­
nance, which can easily be followed, are found on this and the
following pages. However, before beginning maintenance, fol­
low these safety precautions:
. A
WARNING:
lltrn OFF electrical pow'er supply to your
furnace before removing the acces.s doors to service or per-
Failure to follow thi.s warning could re­
sult in personal injury or death.
A
CAUTION:
Although special care has been taken to
minimize sharp edges, be extremely careful when handling
piarts or reaching into the furnace.
FILTERING OUT TROUBLE
A dirty filter will cause excessive stress on the furnace blower
motor and can cause it to overheat and automatically shut
down. The furnace filter should be checked every 3 or 4 weeks
and cleaned if necessary.
A
CAUTION:
Never operate your furnace without a filter
in place. Doing so may damage the furnace blower motor.
An accumulation of dust and linl on internal parts of your
furnace can cause a loss of efficiency.
The air filter is normally located in the blower compartment be­
fore the blower. (See Figure 16.) If the filter(s) has been in­
stalled in another location, contact your dealer for instructions.
To inspect, clean and/or replace the air filter(s), follow these
steps:
If your furnace filter needs to be replaced, be sure to use the
same size and type of filter that was originally supplied. Use the
furnace filter table and compare your furnace size with the
proper filter size.
HORIZONTAL FURNACE FILTER TABLE
HORIZONTAL
FURNACE INPUT
(BTUH)
FILTER SIZE
(INCHES)
FILTER
TYPE
50,000 (1) 1 3 x 2 3 x 1 Cleanable
75,000 (1) 1 3 x 2 3 x 1 Cleanable
100,000 (1) 1 6 x 2 3 x 1 Cleanable
125,000 (1) 20
x
23
X
1 Cleanable
• REMOVE THE FILTER FOR CLEANING AS FOLLOWS:
1. Thrn OFF electrical supply to the furnace. (See Figure 13.)
Remove blower access door located at the inlet (return air)
end of the furnace (4 screws must be removed). (See Figure
15.)
2
.
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3. Bend the formed wire filter retainer to clear the furnace
fl'ange at one side.
4. Pivot the filter retainer toward the blower. (See Figure 16.)
5. Remove the filter from the furnace.
6. Inspect the filter. If torn, replace it.
7. Wash the filter (if dirty) in a sink, bathtub, or outside with
a 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.
8. Reinstall the clean filter with the cross-mesh binding side
facing the furnace blower.
9. Replace blower door, reinstall 4 screws (see Figure 17) and
turn ON electrical power to your furnace.
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