Technical Data Venting - A.O. Smith BTN 120 THRU 400/A Series Installation And Operaion Manual

TABLE 6. 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 4) and
tables below which give sizing and data based upon
NFPA 54/ANSI Z223. 1992.
MODEL BTN-120
Input: 120,000 Btu/hr
Vent Connector Size: 5 inches
Number of
BTN 120 Heaters
2
3
4
MODEL BTN-154
Input: 154,000 Btu/hr
Vent Connector Size: 6 inches
Number of
BTN 154 Heaters
2
3
4
MODEL BTN-180,199, 200
Input: 180,000, 190,000 and 199,000 Btu/hr
Vent Connector Size: 6 inches
Number of
BTN Heaters
2
3
4
Input Btu/hr
120,000
120,000
120,000
Combined Input
in Thousands of Btu/hr
240,000
360,000
480,000
Input Btu/hr
154,000
154,000
154,000
Combined Input
in Thousands of Btu/hr
308,000
462,000
616,000
Input Btuh/hr
180,000
190,000
199,000
180,000
190,000
199,000
180,000
190,000
199,000
Combined Input
in Thousands of Btu/hr
360,000
380,000
398,000
540,000
570,000
597,000
720,000
760,000
796,000
Total Vent Height (Feet)
6 8
Rise Vent Connector Diameter (Inches)
1 Ft. 6 6
2 Ft. 5 5
3 Ft. 5 5
Manifold and Common Vent Diameter (Inches)
7 7
8 8
9 9
Total Vent Height (Feet)
6 8
Rise Vent Connector Diameter (Inches)
1 Ft. 6 6
2 Ft. 6 6
3 Ft. 6 6
Manifold and Common Vent Diameter (Inches)
7 7
8 8
9 9
Total Vent Height (Feet)
6 8
Rise Vent Connector Diameter (Inches)
1 Ft. 7 7
1 Ft. 7 7
1 Ft. 7 7
2 Ft. 6 6
2 Ft. 7 6
2 Ft. 7 7
3 Ft. 6 6
3 Ft. 6 6
3 Ft. 6 6
Manifold & Common Vent Diameter (Inches)
7 7
7 7
6 7
7 6
7 6
6 7
6 6
6 6
6 6
9
10 15 20 30 50
5 5 5 5
5 5 5 5
5 5 5 5
6 6 6 6
7 7 7 6
9 8 8 7
10 15 20 30 50
6 6 6 6
6 6 6 6
6 6 6 6
6 6 6 6
7 7 7 6
9 8 8 7
10 15 20 30 50
6 6 6 6
7 6 6 6
7 6 6 6
6 6 6 6
6 6 6 6
6 6 6 6
6 6 6 6
6 6 6 6
6 6 6 6
6 6 6 6
7 6 6 6
7 6 6 6
6 6 6 6
6 6 6 6
6 6 6 6
6 6 6 6
6 6 6 6
6 6 6 6
100
5 5
5 5
5 5
6 6
6 6
7 6
100
6 6
6 6
6 6
6 6
6 6
7 6
100
6 6
6 6
6 6
6 6
6 6
6 6
6 6
6 6
6 6
6 6
6 6
6 6
6 6
6 6
6 6
6 6
6 6
6 6