V1
VENTING WITH THREE (3) 90o ELBOWS | NATURAL GAS | ||
| MODEL | MODEL | |
V (MIN.) | H + H1 (MAX.) | H + H1 (MAX.) | |
90o Elbow on Top | 2 FT (610mm) | 2 FT (610mm) | |
1 FT (305mm) | 3 FT (914mm) | 3 FT (914mm) | |
2 FT (610mm) | 4 FT (1.22m) | 4 FT (1.22m) | |
3 FT (914mm) | 6 FT (1.86m) | 6 FT (1.86m) | |
4 FT (1.22m) | 8 FT (2.48m) | 8 FT (2.48m) | |
5 FT (1.52m) | 16 FT (4.8m) | 16 FT (4.8m) | |
H + H1 MAX. = 16 FT (4.8m) | V + V1 + H + H1 | MAX. = 40 FT (12.2m) | |
VENTING WITH THREE (3) 90o ELBOWS | PROPANE | ||
| MODEL | MODEL | |
V (MIN.) | H + H1 (MAX.) | H + H1 (MAX.) | |
90o Elbow on Top | NOT ALLOWED | NOT ALLOWED | |
1 FT (305mm) | 2 FT (610mm) | 2 FT (610mm) | |
2 FT (610mm) | 4 FT (1.22m) | 4 FT (1.22m) | |
3 FT (914mm) | 6 FT (1.86m) | 6 FT (1.86m) | |
4 FT (1.22m) | 8 FT (2.48m) | 8 FT (2.48m) | |
5 FT (1.52m) | 16 FT (4.8m) | 16 FT (4.8m) | |
H + H1 MAX. = 16 FT (4.8m) | V + V1 + H + H1 MAX. = 40 FT (12.2m) | ||
V
H1 | H |
Use SL
Note: There MUST be a 25% reduction in total H when using flex vent, except when using the simple up and out installation (see Figure 9).
Figure 19. Venting with three 90° elbows
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