Bryant 315AAV instruction manual Additional Venting Requirements, Vent Height

315AAV

Table 9 – Minimum Allowable Input Rating of

Space-Heating Appliance in Thousands of Btuh per Hour

	INTERNAL AREA OF CHIMNEY
VENT HEIGHT		SQ. IN. (SQ. MM)
FT. (M)	12	19	28	38
	(7741)	(12258)	18064)	(24516)
Local 99% Winter Design Temperature: 17 to 26 degrees F
6	0	55	99	141
8	52	74	111	154
10	NR	90	125	169
15	NR	NR	167	212
20	NR	NR	212	258
30	NR	NR	NR	362
Local 99% Winter Design Temperature: 5 to 16 degrees F*
6	NR	78	121	166
8	NR	94	135	182
10	NR	111	149	198
15	NR	NR	193	247
20	NR	NR	NR	293
30	NR	NR	NR	377
Local 99% Winter Design Temperature: --- 10 to 4 degrees F*
6	NR	NR	145	196
8	NR	NR	159	213
10	NR	NR	175	231
15	NR	NR	NR	283
20	NR	NR	NR	333
30	NR	NR	NR	NR

Local 99% Winter Design Temperature: --- 11 degrees F or

lower

Not recommended for any vent configuration.

*The 99.6% heating (db) temperatures found in the 1997 or 2001 ASHRAE Fundamentals Handbook, Climatic Design Information chapter, Table 1A (United States) and 2A (Canada) or the 2005 ASHRAE Funda- mentals handbook, Climatic Design Information chapter, and the CD ---

ROM included with the 2005 ASHRAE Fundamentals Handbook.

Air for combustion must not be contaminated by halogen compounds which include chlorides, fluorides, bromides, and iodides. These compounds are found in many common home products such as detergent, paint, glue, aerosol spray, bleach, cleaning solvent, salt, and air freshener, and can cause corrosion of furnaces and vents. Avoid using such products in the combustion-air supply. Furnace use during construction of the building could cause the furnace to be exposed to halogen compounds, causing premature failure of the furnace or venting system due to corrosion.

Vent dampers on any appliance connected to the common vent can cause condensation and corrosion in the venting system. Do not use vent dampers on appliances common vented with this furnace.

Additional Venting Requirements

A 4-in. (102 mm) round vent elbow is supplied with the furnace. A 5-in. (127 mm) or 6- in. (152 mm) vent connector may be required for some model furnaces. A field-supplied 4-in. (102

mm)to 5-in. (127 mm) or 4-in. (102 mm) to 6-in. (152 mm) sheet metal increaser fitting is required when 5-in. (127 mm) or 6-in. (152 mm) vent connector is used. See Fig. 36 - 48, Venting Orientation for approved vent configurations.

NOTE: Vent connector length for connector sizing starts at furnace vent elbow. The 4-in. (102 mm) vent elbow is shipped for upflow configuration and may be rotated for other positions. Remove the three screws that secure vent elbow to furnace, rotate furnace vent elbow to position desired, reinstall screws. The factory-supplied vent elbow does NOT count as part of the number of vent connector elbows.

The vent connector can exit the furnace through one of five locations on the casing.

!CAUTION

CUT HAZARD

Failure to follow this caution may result in personal injury.

Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts, and servicing furnaces.

1.Attach the single wall vent connector to the furnace vent elbow, and fasten the vent connector to the vent elbow with at least two field-supplied, corrosion-resistant, sheet metal screws located 180_ apart.

NOTE: An accessory flue extension is available to extend from the furnace elbow to outside the furnace casing. See Table 17 for accessory listing. If flue extension is used, fasten the flue extension to the vent elbow with at least two field-supplied, corrosion-resistant, sheet metal screws located 180_ apart. Fasten the vent connector to the flue extension with at least two field-supplied, corrosion resistant sheet metal screws located 180_ apart.

2.Vent the furnace with the appropriate connector as shown in Fig. 36 - 48.

3.Determine the correct location of the knockout to be re- moved.

4.Use a hammer and screwdriver to strike a sharp blow between the tie points and work the slug back and forth until the slug breaks free.

An accessory Vent Guard Kit is REQUIRED for downflow applications for use where the vent exits through the lower portion of the furnace casing. Refer to the Vent Guard Kit Instructions for complete details. See Table 17 for accessory listing.

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