Bryant 310AAV, 310JAV warranty Vent Internal Area of Chimney

NOTE: See the NFGC, 13.1.9 and 13.2.20 regarding alternative venting design and the exception, which cover installations such as

the Chimney Adapter Kits KGACA02014FC and KGACA02015FC, which are listed for use with these furnaces.

The Chimney Adapter Kit is listed alternative venting design for these furnaces. See the kit instructions for complete details.

Canada-This furnace is permitted to be vented into a clay tile-lined masonry chimney that is exposed to the outdoors below the roof line, provided:

1.Vent connector is Type-B double-wall, and

2.This furnace is common vented with at least 1 draft hood- equipped appliance, and

3.The combined appliance input rating is less than the maximum capacity given in Table A, and

4.The input rating of each space heating appliance is greater than the minimum input rating given in the appropriate Table B for Masonry Chimneys for the local winter design tempera- ture. Chimneys having internal areas greater than 38 square inches require furnace input ratings greater than the input ratings of these furnaces. See footnote at bottom of Table B, and

5.The authority having jurisdiction approves.

If all of these conditions cannot be met, an alternative venting design shall be used, such as the listed chimney adapter kit with these furnaces listed for use with the kit, a listed chimney-lining system, or a Type-B common vent.

Exterior Masonry Chimney,

FAN + NAT Installations with

Type-B Double-Wall Vent Connectors

Table A—Combined Appliance

Maximum Inut Rating in

Thousands of BTU per Hour

VENT		INTERNAL AREA OF CHIMNEY
				(SQ. IN.)
HEIGHT (FT)
	12		19		28	38
6	74		119		178	257
8	80		130		193	279
10	84		138		207	299
15	NR		152		233	334
20	NR		NR		250	368
30	NR		NR		NR	404

Table B—Minimum Allowable Input Rating of

Space-Heating Appliance in Thousands of BTU per Hour

	VENT			INTERNAL AREA OF CHIMNEY
					(SQ. IN.)
	HEIGHT (FT)
			12		19	28	38
		Local 99% Winter Design
		Temperature: 17 to 26 degrees F*
	6		0		55	99	141
F	8		52		74	111	154
26
	10		NR		90	125	169
to
	15		NR		NR	167	212
17
	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
F	8		NR		94	135	182
to 16	10		NR		111	149	198
	15		NR		NR	193	247
5
	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
F	8		NR		NR	159	213
4	10		NR		NR	175	231
to
	15		NR		NR	NR	283
-10
	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
-11 F or lower					configuration

*The 99% Winter Design Dry-Bulb (db) temperatures are found in the 1993 ASHRAE Fundamentals Handbook, Chapter 24, Table 1 (United States) and 2 (Canada), or use the 99.6% heating db temperatures found in the 1997 or 2001 ASHRAE Fundamentals Handbook, Climatic Design Information chap- ter, Table 1A (United States) and 2A (Canada).

Inspections before the sale and at the time of installation will determine the acceptability of the chimney or the need for repair and/or (re)lining. Refer to Fig. 25 to perform a chimney inspection. If the inspection of a previously used tile-lined chimney:

a.Shows signs of vent gas condensation, the chimney should be relined in accordance with local codes and the authority having jurisdiction. The chimney should be relined with a listed metal liner, Type-B vent, or a listed chimney adapter kit shall be used to reduce condensation. If a condensate drain is required by local code, refer to the NFGC, Section

10.9for additional information on condensate drains.

b.Indicates the chimney exceeds the maximum permissible size in the tables, the chimney should be rebuilt or relined to conform to the requirements of the equipment being installed and the authority having jurisdiction.

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