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 13) and tables below which give sizing and data based upon NFPA 54/ANSI Z223. 2006.
MODEL BCL3 95T199 6NOX
Input: 199,000 Btu/hr |
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| Total Vent Height (Feet) |
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Vent Connector Size: 6 inches |
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| 6 | 8 |
| 10 | 15 | 20 | 30 | 50 | 100 |
| Input Btuh/hr | Rise |
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| Vent Connector Diameter (Inches) |
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| 199,000 | 1 Ft. |
| 7 | 7 |
| 7 | 6 | 6 | 6 | 6 | 6 |
| 199,000 | 2 Ft. |
| 7 | 7 |
| 6 | 6 | 6 | 6 | 6 | 6 |
| 199,000 | 3 Ft. |
| 6 | 6 |
| 6 | 6 | 6 | 6 | 6 | 6 |
Number of 199 Heaters | Combined Input in |
| Manifold and Common Vent Diameters (Inches) |
| ||||||||
Thousands of Btu/hr |
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2 | 398,000 |
|
| 7 | 7 |
| 7 | 6 | 6 | 6 | 6 | 6 |
3 | 597,000 |
|
| 7 | 7 |
| 6 | 6 | 6 | 6 | 6 | 6 |
4 | 796,000 |
|
| 6 | 6 |
| 6 | 6 | 6 | 6 | 6 | 6 |
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