American Water Heater Ultra Low NOx 104 Series Instruction Manual page 19

Commercial gas water heaters
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taBle 7. teChniCal data Venting (Continued)
model sBl95250ne(a)
input: 250,000 Btu/hr
Vent connector size: 6 inches
number of 250 heaters
2
3
4
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input Btu/hr
rise
250,000
1 ft.
250,000
2 ft.
250,000
3 ft.
Combined input in
thousands of Btu/hr
500,000
750,000
1,000,000
total Vent height (feet)
6
8
10
Vent Connector diameter (inches)
8
8
7
7
7
7
7
7
7
manifold and Common Vent diameter (inches)
9
9
9
12
12
10
14
14
12
19
15
20
30
50
7
7
6
6
7
6
6
6
7
6
6
6
8
8
7
7
10
10
9
8
12
10
10
9
100
6
6
6
7
8
9

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