Technical data venting, Table 7. technical data venting – State SBN85 390NE A User Manual
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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.
taBle 7. teChniCal data Venting
model sBn71120ne
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
heaters
Combined input
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 sBn81154ne
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
heaters
Combined input
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 sBn95, sBn100-180, 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
heaters
Combined input
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