VENTING WITH THREE (3) 90o ELBOWS | NATURAL GAS | ||||||
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| MODEL: | MODELS: | ||||
V (MIN.) |
| H (MAX.) | H + H1 (MAX.) |
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| H (MAX.) | H + H1 (MAX.) |
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90o Elbow on Top |
| 2.5 FT (762mm) 4 FT (1.22m) |
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| 2 FT (610mm) | 4 FT (1.22m) | |
1 FT (305mm) |
| 3 FT (914mm) | 6 FT (1.86m) |
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| 3 FT (914mm) | 6 FT (1.86m) |
2 FT (610mm) |
| 4 FT (1.22m) | 8 FT (2.48m) |
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| 4 FT (1.22m) | 8 FT (2.48m) |
3 FT (914mm) |
| 6 FT (1.86m) | 12 FT (3.72m) |
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| 6 FT (1.86m) | 12 FT (3.72m) |
4 FT (1.22m) |
| 8 FT (2.48m) | 16 FT (4.8m) |
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| 8 FT (2.48m) | 16 FT (4.8m) |
5 FT (1.52m) |
| 16 FT (4.8m) | 16 FT (4.8m) |
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| 16 FT (4.8m) | 16 FT (4.8m) |
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| V + H + V1 + H1 MAX. = 40 FT (12.2m) |
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VENTING WITH THREE (3) 90o ELBOWS | PROPANE | |||
MODELS: | ||||
V (MIN.) |
| H (MAX.) | H + H1 (MAX.) | |
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90o Elbow on Top |
| NOT ALLOWED | NOT ALLOWED | |
1 FT (305mm) |
| 2 FT (610mm) | 4 FT (1.22m) | |
2 FT (610mm) |
| 4 FT (1.22m) | 8 FT (2.48m) | |
3 FT (914mm) |
| 6 FT (1.86m) | 12 FT (3.72m) | |
4 FT (1.22m) |
| 8 FT (2.48m) | 16 FT (4.8m) | |
5 FT (1.52m) |
| 16 FT (4.8m) | 16 FT (4.8m) |
V + H + V1 + H1 MAX. = 40 FT (12.2m)
H
H1
V1
V
NOTE: There MUST be a 25% reduction in total H when using flex vent except when using the simple up and out installa- tion (see Figure 9).
Use SL
Figure 18. Venting with three 90° elbows
Heat & Glo • | 29 |