Performing Routine Maintenance; Filtering Out Trouble; Combustion Area And Vent System; Furnace Needs Air For Combustion And Ventilation Warning - Carrier Weathermaker 8000VS Manual

PERFORMING ROUTINE
MAINTENANCE
With 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 begin-
ning maintenance, follow these safety precautions:
WARNING
!
Turn off electrical power supply to your furnace
before removing the access doors to service or
perform maintenance. A failure to follow this
warning could result in personal injury or death.
CAUTION
!
Although special care has been taken to minimize
sharp edges, be extremely careful when handling
parts or reaching into the furnace.

FILTERING OUT TROUBLE

CAUTION
!
Never operate your furnace without a filter in place.
Doing so may damage the furnace blower motor.
An accumulation of dust and lint on internal parts
of your furnace can cause a loss of efficiency.
A dirty filter will cause excessive stress on the furnace, heat
exchanger, and blower motor and can cause it to overheat and
automatically shut down. The furnace filter should be checked
every 4 weeks or so and cleaned or replaced if necessary.
If installed with factory specified disposable media filter,
check or replace filter before each heating and cooling
season. Replace disposable media filter at least twice a year.
If your furnace filter needs replacing, be sure to use the
same size and type of filter that was originally specified
The air filter for the furnace may be located in a filter cabinet
attached to the side or bottom of the furnace. If air filter has
been installed in another location, contact your dealer for
instructions. To inspect, clean and/or replace the air filter(s),
follow these steps:
1. Turn off the electrical supply to the furnace. (See Fig. 7.)
2. Remove filter cabinet door (See Fig. 18 and 19.)
NOTE: It may be necessary to remove 1 thumbscrew.
3. Slide air filter out of filter cabinet. Keep dirty side up (if
dirty) to avoid spilling dirt. (See Fig. 20 and 21.)
OR
16
4. Inspect the filter. If torn, replace it.
NOTE: If a washable filter has been replaced with:
a) Factory specified disposable media filter – Do not clean.
If dirty, replace only with media filter having the same
part number and size. Install with airflow direction arrow
pointing towards blower.
b) Electronic air cleaner (EAC) – Refer to EAC Owner's
Manual for maintenance information.
5. Wash filter (if dirty) in sink, bathtub, or outside with a gar-
den hose. Always use cold tap water. A mild liquid deter-
gent may be used if necessary. Spray water through filter
in the opposite direction of airflow. Allow filter to dry.
6. Reinstall clean air filter
7. Replace filter cabinet door. (See Fig. 22 and 23.)
8. Turn on electrical supply to furnace (See Fig 12).
NOTE: If side return ducts are used, 2 filters may be required
in some models.The procedure listed above may be used to
remove side filters.
FILTER QUANTITY
FURNACE CAS- SIDE
ING WIDTH RETURN
14-1/2 (1) 16 x 25
17-1/2 (1) 16 x 25
21 (1) 16 x 25
24 (1) 16 x 25
* Recommended ** Some furnaces may have 2 filters
Filters may be field modified by cutting filter material and support rods (3)
in filters. Alternate sizes and additional filters may be ordered from your
dealer.
!
Use care when cutting support rods in filters to
protect against flying pieces and sharp rod ends.
Wear safety glasses, gloves, and appropriate pro-
tective clothing. Failure to follow this caution
could result in personal injury.
COMBUSTION AREA AND
VENT SYSTEM
!
For proper and safe operation the furnace needs
air for combustion and ventilation. Do not block or
obstruct air openings on the furnace, air opening
to the area in which the furnace is installed, and
the space around the furnace.
!
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.
6
AND SIZE **
BOTTOM RETURN FILTER TYPE *
(1) 14 x 25 1" thick cleanable
or 4-5/16" thick
media-type
(1) 16 x 25 1" thick cleanable
or 4-5/16" thick
media-type
(1) 20 x 25 1" thick cleanable
or 4-5/16" thick
media-type
(1) 24 x 25 1" thick cleanable
or 4-5/16" thick
media-type
CAUTION
WARNING
WARNING