Combustion Area And Vent System - Carrier INDUCED COMBUSTION 58YAV User's Information Manual

1. Turn OFF the electrical supply to the furnace.
(See Fig. 17.)
2. Remove control door and blower access door.
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3. Push filter retainer toward the bracket opening to
release the filter. (See Fig. 20.)
4. Gently remove the filter and carefully turn the dirty
side up (if dirty) to avoid "spilling" dirt from the filter.
(See Fig. 21.)
5. Inspect the filter. If torn, replace the filter.
6. Wash the filter (if dirty) in a sink, bathtub, or outside
with a garden hose. Always use cold tap water. A mild
liquid detergent may be used if necessary. Spray water
through the filter in the opposite direction of airflow.
Allow filter to dry.
7. Reinstall the clean filter.
8. Put filter retainer back in the bracket opening and lock
it in place.
9. Replace blower door and control access door and turn
ON electrical power to your furnace. (See Fig. 13
and 22.)
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.
FURNACE FILTER TABLE
FURNACE FILTER SIZE
CASING
WIDTH Side Return
14-3/16 (1) 16 x 25 x 1*
17-1/2 (1) 16 x 25 x 1*
21 (1) 16 x 25 x
24-1/2 (2) 16 x 25 x 1*
*Factory-provided with the furnace. Filters may be field modified by cutting and
folding the frame as indicated on the filter. Alternate sizes and additional filters
may be ordered from your dealer.
FILTER
Bottom Return TYPE
(1) 14 x 25 x 1* Cleanable
(1) 16 x 25 x 1* Cleanable
1* (1) 20 x 25 x 1* Cleanable
(2) 12 x 25 x 1* Cleanable

Combustion area and vent system

Inspect the combustion area and vent system before each
heating season. An accumulation of dirt, soot, or rust can
mean a loss of efficiency and improper performance.
Buildups on the main burners can cause faulty firing. This
"delayed ignition" is characterized by an alarmingly loud
sound. If your furnace makes a loud noise when the main
burners are ignited, shut down the furnace—call your ser-
vicing dealer.
Use your flashlight and follow these steps for inspecting
the combustion area and vent system of your furnace:
1. Turn off the gas and electrical supplies to the furnace
and remove the access doors. (See Fig. 6, 7, and 8.)
2. Carefully inspect the gas burner (see Fig. 23) for dirt,
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rust, or scale. Then inspect the inducer, vent connec-
tion area, and the vent pipe for rust.
NOTE: If dirt, rust, soot, or scale accumulations are found,
call your servicing dealer. DO NOT OPERATE THE
FURNACE.
3. Inspect the vent pipe for a sag, holes, or a disconnec-
tion. A horizontal vent pipe must slope upward away
from the furnace. If rusty joints or seams, or signs of
water leakages are found call your dealer for service.
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If holes caused by deterioration are found—or
holes in the vent pipe—or if the vent pipe is ob-
structed or is not connected—toxic fumes can es-
cape 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.
4. Replace the access doors and restore gas and electrical
supplies to the furnace. Be sure bottom door flange is
inside of the furnace casing. (See Fig. 13, 14, 15, and 22.)
5. Start the furnace and observe its operation. If possible,
watch the burner flames. Are they burning bright blue?
If not (or if you suspect some other malfunction), call
your servicing dealer.
Before you request a "service call"
Before you call for service, check for several
easily solved problems:
• Check for sufficient airflow surrounding the furnace.
Check the air filter for dirt. Check for blocked return-air
or supply-air grilles. Be sure they are open and unob-
structed. If this isn't the cause, call your servicing dealer.
6
WARNING
!
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