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American Water Heater Commercial Gas Benutzerhandbuch

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9
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 4) and
tables below which give sizing and data based upon
NFPA 54/ANSI Z223. 1992.
TABLE 6. TECHNICAL DATA VENTING
MODEL BCG3-80T150-6NOX
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
 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 BCG3-100T250-6NOX
Input:  250,000 Btu/hr
Total Vent Height (Feet)
Vent Connector Size: 6 inches
6
8
10
15
20
30
50
100
Input Btuh/hr
Rise
Vent Connector Diameter (Inches)
250,000
1 Ft
8
8
7
7
7
6
6
6
250,000
2 Ft
7
7
7
7
6
6
6
6
250,000
3 Ft
7
7
7
7
6
6
6
6
Number
 Combined Input
 of Heaters
in Thousands of Btu/hr
Manifold and Common Vent Diameter (Inches)
2
500,000
9
9
9
8
8
7
7
7
3
750,000
12
12
10
10
10
9
8
8
4
1,000,000
14
14
12
12
10
10
9
9
MODEL BCG3-85T390-6NOX
Input:  399,000 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)
366,000
1 Ft
9
9
9
8
8
8
8
8
399,000
1 Ft
10
9
9
9
8
8
8
8
366,000
2 Ft
9
9
8
8
8
8
8
8
399,000
2 Ft
9
9
9
8
8
8
8
8
366,000
3 Ft
9
8
8
8
8
8
8
8
399,000
3 Ft
9
9
8
8
8
8
8
8
Number of
Combined Input
Heaters
in Thousands of Btu/hr
Manifold & Common Vent Diameter (Inches)
2
732,000
12
10
10
9
9
9
8
8
798,000
12
12
10
10
9
9
8
8
3
1,098,000
14
14
14
12
12
10
9
9
1,197,000
14
14
14
12
12
10
10
9
4
1,464,000
16
16
14
14
14
12
12
10
1,596,000
16
16
16
14
14
12
12
10