Lennox International Inc G24-200 Serving Two Or More Category I Appliances, Common Vent Capacity

TABLE 5

CAPACITY OF TYPE B DOUBLE-WALL VENTS WITH TYPE B DOUBLE-WALL CONNECTORS

SERVING TWO OR MORE CATEGORY I APPLIANCES

VENT CONNECTOR CAPACITY

Vent	Connector				Vent and Connector Diameter − D (inches)
			4 Inch			5 Inch			6 Inch			7 Inch
Height	Rise
H	R				Appliance Input Rating in Thousands of Btu Per Hour
(feet)	(feet)
		MIN		MAX	MIN		MAX	MIN		MAX	MIN		MAX
	1	35		66	46		106	58		164	77		225
6	2	37		75	48		121	60		183	79		253
	3	38		81	49		132	62		199	82		275
	1	35		72	49		114	64		176	84		243
8	2	36		80	51		128	66		195	86		269
	3	37		87	53		139	67		210	88		290
	1	34		78	49		123	65		189	89		257
10	2	36		86	51		136	67		206	91		282
	3	37		92	52		146	69		220	94		303
	1	33		89	47		142	64		220	88		298
15	2	35		96	49		153	66		235	91		320
	3	36		102	51		163	68		248	93		339
	1	33		99	46		157	62		246	86		334
20	2	34		105	48		167	64		259	89		354
	3	35		110	50		176	66		271	91		371
	1	31		113	45		181	60		288	83		391
30	2	33		118	47		190	62		299	85		408
	3	34		123	48		198	64		309	88		423

TABLE 6

CAPACITY OF TYPE B DOUBLE-WALL VENTS WITH TYPE B DOUBLE-WALL CONNECTORS

SERVING TWO OR MORE CATEGORY I APPLIANCES

COMMON VENT CAPACITY

Vent			Common Vent Diameter − D (inches)
Height	4 Inch		5 Inch		6 Inch		7 Inch
H			Appliance Input Rating in Thousands of Btu Per Hour
(feet)
	FAN + FAN	FAN + NAT	FAN + FAN	FAN + NAT	FAN + FAN	FAN + NAT	FAN + FAN	FAN + NAT
6	92	81	140	116	204	161	309	248
8	101	90	155	129	224	178	339	275
10	110	97	169	141	243	194	367	299
15	125	112	195	164	283	228	427	352
20	136	123	215	183	314	255	475	394
30	152	138	244	210	361	297	547	459

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