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

18

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Image 18
American Water Heater (A)BCG3 85T500-8P, (A)BCG3 85T500-8N Technical Data Venting, Multiple Gas Fired Tank-Type Heaters

(A)BCG3 85T500-8N, (A)BCG3 85T500-8P specifications

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