American Water Heater ABCG3 Technical Data Venting, Multiple Gas Fired Tank-Type Heaters

TABLE 7. TECHNICAL DATA VENTING

TYPE B GAS VENT

Multiple Gas Fired Tank-Type Heaters

When venting multiple tank type heaters using Type B vent pipe, follow the installation diagram and tables below which give sizing and data based upon NFPA 54/ANSI Z223. 1992.

MODEL BCG370T1205NOX

	Input: 120,000 Btu/hr					Total Vent Height (Feet)
	Vent Connector Size: 5 inches			6		8		10	15	20	30	50	100
		Input Btu/hr	Rise				Vent Connector Diameter (Inches)
		120,000	1 Ft.	6		6		5	5	5	5	5	5
		120,000	2 Ft.	5		5		5	5	5	5	5	5
		120,000	3 Ft.	5		5		5	5	5	5	5	5
	Number of	Combined Input
	120 Heaters	in Thousands of Btu/hr			Manifold and Common Vent Diameter (Inches)
	2	240,000		7		7		6	6	6	6	6	6
	3	360,000		8		8		7	7	7	6	6	6
4		480,000		9		9		9	8	8	7	7	6
	MODEL BCG380T1506NOX
	Input: 154,000 Btu/hr						Total Vent Height (Feet)
	Vent Connector Size: 6 inches			6		8		10	15	20	30	50	100
		Input Btu/hr	Rise					Vent Connector Diameter (Inches)
		154,000	1 Ft.	6		6		6	6	6	6	6	6
		154,000	2 Ft.	6		6		6	6	6	6	6	6
		154,000	3 Ft.	6		6		6	6	6	6	6	6
	Number of	Combined Input
	154 Heaters	in Thousands of Btu/hr			Manifold and Common Vent Diameter (Inches)
	2	308,000		7		7		6	6	6	6	6	6
	3	462,000		8		8		7	7	7	6	6	6
4		616,000		9		9		9	8	8	7	7	6
	MODEL BCG395, (A)BCG3100-180, 199, 200
	Input: 180,000 and 199,000 Btu/hr					Total Vent Height (Feet)
	Vent Connector Size: 6 inches			6		8		10	15	20	30	50	100
		Input Btuh/hrRise					Vent Connector Diameter (Inches)
		180,000	1 Ft.	7		7		6	6	6	6	6	6
		199,000	1 Ft.	7		7		7	6	6	6	6	6
		180,000	2 Ft.	6		6		6	6	6	6	6	6
		199,000	2 Ft.	7		7		6	6	6	6	6	6
		180,000	3 Ft.	6		6		6	6	6	6	6	6
		199,000	3 Ft.	6		6		6	6	6	6	6	6
	Number of	Combined Input
	Heaters	in Thousands of Btu/hr			Manifold and Common Vent Diameter (Inches)
	2	360,000		7		7		6	6	6	6	6	6
		398,000		7		7		7	6	6	6	6	6
	3	540,000		7		6		6	6	6	6	6	6
		597,000		7		7		6	6	6	6	6	6
	4	720,000		6		6		6	6	6	6	6	6
		796,000		6		6		6	6	6	6	6	6

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