Table 6. technical data venting – State SBD85 365NE A User Manual
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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.
taBle 6. technical data Venting
model sBd71120(n,p)e
input: 120,000 Btuh total Vent height (feet)
draft hood: 5”
6
8
10
15
20
30
50
100
input Btuh
rise
Vent Connector Diameter (inches)
120,000
1 Ft.
7
7
7
6
6
6
6
6
120,000
2 Ft.
6
6
6
6
6
6
6
5
120,000
3 Ft.
6
6
6
6
6
5
5
5
number of
heaters
combined input in
thousands of Btuh
manifold and common Vent diameter (in inches)
2
240
10
8
8
7
7
7
6
7
3
360
10
10
10
10
8
8
7
7
4
480
12
12
12
10
10
10
8
8
model sBd81154(n,p)e
input: 154,000 Btuh total Vent height (feet)
draft hood: 6”
6
8
10
15
20
30
50
100
input Btuh
rise Vent connector diameter (in inches)
154,000
1 Ft.
8
8
7
7
7
7
7
7
154,000
2 Ft.
7
7
7
7
7
6
6
6
154,000
3 Ft.
7
7
7
6
6
6
6
6
numbers of
heaters
combined input in
thousands of Btuh
manifold and common Vent diameter (in inches)
2
308
10
10
10
8
8
7
7
7
3
462
12
12
12
10
10
10
8
8
4
616
14
14
12
12
12
10
1
10
model sBd81180(n,p)e, sBd100199(n,p)et, sBd100199(n,p)e, sBd81199(n,p)e, & sBd100199(n,p)es(a)
input: 180,000, 199,000 Btuh total Vent height (feet)
draft hood: 6”
6
8
10
15
20
30
50
100
input Btuh
rise Vent connector diameter (in inches)
180,000
1 Ft.
8
8
8
8
8
7
7
7
199,000
-
-
8
8
8
8
8
7
180,000
2 Ft.
8
8
7
7
7
7
7
7
199,000
8
8
8
8
7
7
7
7
180,000
3 Ft.
7
7
7
7
7
7
6
6
199,000
8
8
7
7
7
7
7
6
number of
heaters
combined input in
thousands of Btuh
manifold & common Vent diameter
2
360
10
10
10
10
8
8
7
7
398
12
10
10
10
10
8
8
7
3
540
14
12
12
12
10
10
10
8
597
14
14
12
12
12
10
10
10
4
720
14
14
14
12
12
12
10
10
796
16
14
14
14
12
12
12
10