Bryant 340MAV Combustion Area and Vent System, Furnace AIR Filter, Heading South for the WINTER?

FURNACE AIR FILTER

TABLE

AIR FILTER LOCATED IN BLOWER COMPARTMENT

FURNACE	FILTER SIZE
	(IN.)
CASING
WIDTH	*Side	Bottom		FILTER
(IN.)	Return†	Return		TYPE
17-1/2	(1) 16 x	(1) 16 x		Cleanable
	25 x 1*	25 x 1*
21	(1) 16 x	(1) 20 x		Cleanable
	25 x 1	25 x 1*
24-1/2	(1 or 2) 16	(1) 24 x		Cleanable
	x 25 x 1	25 x 1*
AIR FILTER LOCATED IN FILTER CABINET:
FILTER
CABINET
HEIGHT	FILTER SIZE
(IN)	(IN.)		FILTER TYPE
16	(1) 16 x 25 x 1*		Cleanable or
	or (1) 16 x 25 x 4-5/16			Disposable
20	(1) 20 x 25 x 1*		Cleanable or
	or (1) 20 x 25 x 4-5/16			Disposable
24	(1) 24 x 25 x 1*		Cleanable or
	or (1) 24 x 25 x 4-5/16			Disposable

*Factory-provided with the furnace. Filters may be field modified by cutting filter material and support rods (3) in filters. Alternate sizes and additional fil- ters may be ordered from your dealer.

†Upflow only.

!CAUTION

Use care when cutting support rods in filters to protect against flying pieces and sharp rod ends. Wear safety glasses, gloves, and appropri- ate protective clothing. Failure to follow this caution could re- sult in personal injury.

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.

!DANGER

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. Failure to follow this warning could result in per- sonal injury or death.

Also check the combustion-air intake and vent pipes 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 igni- tion creates an alarmingly loud sound.

!CAUTION

If your furnace makes an espe- cially loud noise when the main burners light, shut down your furnace and call your dealer. Failure to follow this caution would result in minor property damage.

To inspect the combustion area and vent system, you will need a flashlight. Refer to Fig. 3 or 4, and proceed as follows:

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

the main furnace door. (See Fig. 9, 10, and 11.)

2.Remove burner enclosure front. (See Fig. 37 or 38.)

Inspect the gas burners, igniter

area, and remainder of furnace for dirt, rust, soot, or scale.

!CAUTION

If dirt, rust, soot, or scale accu- mulations are found, call your dealer. Do not operate your furnace. Failure to follow this caution would result in minor property or product damage.

3.Inspect the combustion-air and vent PVC pipes for sags, holes, cracks, or disconnections. Hori- zontal portions of pipes must slope downward toward furnace.

UPFLOW

37

DOWNFLOW

38

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 your furnace.

(See Fig. 16, 17, and 18.)

6.Start the furnace and observe its operation. Watch the burner flames to see if they are clear blue, almost transparent. (See Fig. 39.) If you observe a suspected malfunction, or the burner flames are not clear blue, call your dealer.

39

HEADING SOUTH FOR THE WINTER?

DON’T FORGET YOUR

FURNACE!

!CAUTION

If the furnace is installed in an unconditioned space where the ambient temperatures may be 32°F or lower, freeze protec- tion measures must be taken to prevent minor property or product damage.

Since the furnace uses a condensing heat exchanger, some water will accu- mulate in the unit as a result of the heat

9