Bryant 373LAV Furnace User Manual


 
6
5. Turn the control knob or switch on
the gas valve to the OFF position.
(See Fig. 22 or 23.)
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6. Replace the control access door.
(See Fig. 16 or 17.)
7. If the furnace is being shut down
because of a malfunction, call your
dealer as soon as possible.
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PERFORMING ROUTINE
MAINTENANCE
With the proper maintenance and care,
your furnace will operate economically
and dependably. Basic maintenance,
which can easily be accomplished by
someone who follows the directions, is
found on this and the following pages.
However, before beginning mainte-
nance, follow these safety precautions:
FILTERING OUT
TROUBLE
A dirty lter will cause excessive stress
on the furnace blower motor and can
cause it to overheat and automatically
shut down. The furnace lter should be
checked every 3 or 4 weeks and cleaned
if necessary. If installed with factory
specied disposable media lter, check
or replace lter before each heating and
cooling season. Replace disposable
media lter at least once a year.
If installed with factory specied dis-
posable media lter, check or replace
lter before each heating and cooling
season. Replace disposable media lter
at least once a year.
If your furnace lter needs replacing, be
sure to use the same size and type of l-
ter that was originally supplied. Use the
Furnace Filter Table and compare your
furnace size with the proper lter size.
The air lter for upow furnaces is nor-
mally located in the blower compart-
ment (See Fig. 03.) or in the factory-
supplier lter cabinet attached to the
side or bottom of the blower cabinet.
Filters for the downow furnaces are
normally located in the return-air ple-
num above the blower. If air lter has
been installed in another location, con-
tact your dealer for instructions. To in-
spect, clean, and/or replace the air
lter(s). follow these steps:
UPFLOW FURNACES ONLY:
1. Turn off electrical supply to fur-
nace. (See Fig. 9)
2. Remove door/access panel.
AIR FILTER(S) LOCATED IN
BLOWER COMPARTMENT
Remove control and blower access
doors. (See Fig. 10 and 11)
AIR FILTER LOCATED IN FIL-
TER CABINET
Remove lter cabinet door (See
Fig. 30 and 31)
NOTE:
It will be necessary to remove 1
thumbscrew
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WARNING
Turn off electrical power sup-
ply to your furnace before re-
moving the access doors to
service or perform mainte-
nance. A failure to follow this
warning could result in per-
sonal injury or death.
CAUTION
Although special care has
been taken to minimize sharp
edges, be extremely careful
when handling parts or reach-
ing into the furnace.
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!
CAUTION
Never operate your furnace
without a filter in place. Doing
so may damage the furnace
blower motor. An accumula-
tion of dust and lint on internal
parts of your furnace can
cause a loss of efficiency.
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