Warning, Caution, Combustion area and vent system – Carrier 58UVB User Manual

Page 11

FURNACE AIR FILTER TABLE

AIR FILTER LOCATED IN BLOWER COMPARTMENT

FURNACE

CASING

WIDTH

(IN.)

FILTER SIZE (IN)

FILTER

TYPE

Side

Return†*

Bottom

Return*

17---1/2

(1) 16 x 25 x 1

Cleanable

(1) 16 x 25 x 1

(1) 20 x 25 x 1

Cleanable

24---1/2

(1 or 2) 16 x 25 x 1

(1) 24 x 25 x 1

Cleanable

AIR FILTER LOCATED IN FILTER CABINET

FILTER CABINET

HEIGHT (IN)

FILTER

SIZE (IN)

FILTER

TYPE

(1) 16 x 25 x 1*

Cleanable or

Disposable

(1) 20 x 25 x 1*

or (1) 20 x 25 x

4---5/16

Cleanable or

Disposable

(1) 24 x 25 x 1*

or (1) 24 x 25 x

4---5/16

Cleanable or

Disposable

*Factory---provided with the furnace. Filters may be field modified by

cutting filter material and support rods (3) in filters.

{

Upflow only. Alternate sizes and additional filters may be ordered from

your dealer.

PERSONAL INJURY HAZARD
Failure to follow this warning could result in personal

injury.
Use care when cutting support rods in filters to protect

against flying pieces and sharp rod ends. Wear safety

glasses, gloves, and appropriate protective clothing.

WARNING

COMBUSTION AREA AND VENT

SYSTEM

Visually inspect the combustion area and vent system before each
heating season. Make sure that all PVC pipes leading into the

combustion area and vent are free from any cracks and sags.

CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal

injury or death.
If holes are found in the pipes or if any portion has

become disconnected, toxic fumes can escape into your

home. DO NOT OPERATE YOUR FURNACE. Call

your dealer for service.

WARNING

Check the combustion--air intake and vent pipe on the outside of
your home for blockage.
When dirt, soot, scale, or rust is allowed to build up, your furnace
can suffer a loss of efficiency and perform improperly.

Accumulations on the main burners can result in firing out of

normal sequence. This delayed ignition creates an alarmingly
loud sound.

UNIT OPERATION HAZARD
Failure to follow this caution may result in property

damage.
If your furnace makes an especially loud noise when the

main burners light, shut down your furnace and call your

dealer.

CAUTION

To inspect the combustion area and vent system, you will need

a flashlight. Refer to Fig. 3 and proceed as follows:

1. Turn off the gas and electrical supplies to the furnace and

remove the main furnace door. (See Fig. 8, 9, and 10.)

2. Remove burner enclosure front. (See Fig. 36.)

Inspect the gas burners, igniter area, and remainder of furnace for

dirt, rust, soot, or scale.

CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal

injury or death.
If dirt, rust, soot, or scale accumulations are found, call

your dealer. Do not operate your furnace.

WARNING

3. Inspect the combustion--air and vent PVC pipes for sags,

holes, cracks, water leaks, blockage or disconnections.

Horizontal portions of pipes must slope downward toward
furnace.

4. Reinstall burner enclosure front.
5. If your furnace is free of the above conditions, replace

main furnace door and turn on electrical and gas supplies
to the furnace. (See Fig. 15, 16, and 17.)

6. Start the furnace and observe its operation. Watch the

burner flames to see if they are clear blue, almost

transparent. (See Fig. 37.) If you observe a suspected
malfunction, or the burner flames are not clear blue, call

your dealer.

A00223

Fig. 36 -- Remove Burner Enclosure Front