State Industries SBD85500NE, SBD85500PE Technical Data Venting, Model Input 500,000 btu/hr

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 (figure 13) and tables below which give sizing and data based upon NFPA 54/ANSI Z223. 2006.

Model 500

Input: 500,000 btu/hr

						Total Vent Height (Feet)
Vent connector size: 8 inches			6	8	10		15	20	30	50	100
Input (btu/hr)		Rise				Vent Connector Diameter (Inches)
500,000		1 Ft.	-	10	10		10	9	8	8	7
500,000		2 Ft.	10	10	10		9	9	8	8	7
500,000		3 Ft.	10	10	9		9	9	8	7	7
				Multiple Fan Assisted Water Heaters
						Total Vent Height (Feet)
Number of 500		Combined	6	8	10		15	20	30	50	100
Heaters	Input (btu/hr)				Manifold and Common Vent Diameter (Inches)
2	1,000,000		14	14	12		12	10	10	9	8
3	1,500,000		16	16	14		14	14	12	12	10
4	2,000,000		18	18	16		16	14	14	12	12
			Combination of Multiple Fan Assisted and Natural Draft Water Heaters
						Total Vent Height (Feet)
Number of 500		Combined	6	8	10		15	20	30	50	100
Heaters	Input (btu/hr)				Manifold and Common Vent Diameter (Inches)
2	1,000,000		16	14	14		14	12	12	10	9
3	1,500,000		18	18	16		16	14	14	12	10
4	2,000,000		20	20	18		18	16	16	14	12

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