Top Vent - Horizontal Termination - (continued)
Three Elbows
V1 Min. | H1 Max. |
| V2 Min. | H2 Max. | ||||
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Elbow only | 2 ft. | 610 mm | 0 in. |
| 0 mm | 1 ft. | 305 mm | |
6 in. | 152 mm | 3 ft | 914 mm | 6 in. |
| 152 mm | 2 ft. | 610 mm |
1 ft. | 305 mm | 6 ft. | 1.8 m | 1 ft. |
| 305 mm | 6 ft. | 1.8 m |
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2 ft. | 610 mm | 11 ft.* | 3.4 m* | 2 ft. |
| 610 mm | 10 ft.* | 3.1 m* |
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3 ft. | 914 mm | 16 ft * | 4.9 m* | 3 ft. |
| 914 mm | 14 ft.* | 4.3 m* |
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*H1 + H2 = 20 ft. (6.1 m) Maximum | V1 + V2 + H1 + H2 = 40 ft. (12.2 m) Maximum | |||||||
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H2
V2
H1V1
Figure 7.5
26 | Heat & Glo • |