Shutting Down Your Furnace; Performing Routine Maintenance; Filtering Out Trouble - Bryant 340AAV User's Information Manual

SHUTTING DOWN
YOUR FURNACE
Should you need to shut down your
furnace for service or maintenance,
you will need to turn the furnace off.
The following procedures must be
followed:
1. Set your room thermostat to the
lowest temperature setting.
(See Fig. 21.)
2. Close the external manual gas
valve. (See Fig. 11.)
3. Turn off electrical supply to the
furnace. (See Fig. 22.)
4. Remove main furnace door.
(See Fig. 13.)
5. Turn switch on the gas valve to
OFF position.
(See Fig. 23 or 24.)
OR
For 352AAV and 355AAV
For 340AAV and 350AAV
6. Replace main furnace door.
(See Fig. 18.)
7. If the furnace is being shut down
®
because of a malfunction, call
your dealer as soon as possible.
CAUTION
!
UNIT AND PROPERTY
21
DAMAGE
Failure to follow this caution may
result in damage to the furnace
and other property damage.
Furnace is not to be installed,
operated, and then turned off
and left turned off in an unoc-
cupied structure during winter.
(See "Heading South for the
Winter?" procedures in main-
22
tenance section on page 9.)
PERFORMING
ROUTINE
MAINTENANCE
NOTE: The qualified installer or
agency must use only factory-
authorized replacement parts, kits,
and accessories when modifying this
product.
Installing and servicing of heating
equipment can be hazardous due to
gas and electrical components.
Only trained and qualified personnel
should install, repair, or service heat-
ing equipment. Untrained personnel
can perform basic maintenance func-
A02266
tions such as cleaning and replacing air
23
filters.
All other operations must be performed
by trained and qualified service agency
personnel. Observe safety precautions
in this manual, on tags, and on labels
attached to the furnace and other safety
precautions that may apply.
With proper maintenance and care, your
furnace will operate economically and
dependably. Instructions for basic main-
tenance are found on this and the follow-
ing pages. However, before beginning
maintenance, follow these safety pre-
cautions:
ON
ELECTRICAL SHOCK HAZARD
Failure to follow this warning
A05118
could result in personal injury/
death.
24
Turn off electrical power sup-
ply to your furnace before re-
moving the main furnace door
to service or perform mainte-
nance.
CUT HAZARD
Failure to follow this caution
may result in minor personal
injury.
Although special care has
been taken to minimize sharp
edges, be extremely careful
when handling parts or reach-
ing into the furnace.

FILTERING OUT TROUBLE

UNIT PERFORMANCE
HAZARD
Failure to follow this caution
may result in product damage.
Never operate your furnace
without the air filter in place.
Doing so may damage the fur-
nace blower motor. An accu-
mulation of dust and lint on
internal parts of your furnace
can cause a loss of efficiency.
A dirty air filter will cause a loss of airflow
in your duct system. When excessive loss
of airflow occurs, the furnace may cycle
on its safety controls. If this condition is
left unattended, the furnace will eventu-
ally lock out. It is recommended that the
furnace air filter be checked every 3 or 4
weeks and cleaned if necessary.
If installed with factory-specified dis-
posable media filter, check or replace fil-
ter before each heating and cooling
season. Replace media filter at least
once a year.
The air filter is normally located in the
blower compartment (See Fig. 3 or 4.)
or in the factory-supplied filter cabinet
attached to the side or bottom of the
7
WARNING
!
CAUTION
!
CAUTION
!