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Figure 20. Venting with Four 90° elbows
VENTING WITH FOUR (4) 90° ELBOWS
NATURAL AND PROPANE GAS
V (MIN.) H (MAX.)
2' (609mm) 5' (1.52m)
V
1
(MIN.) H
1
(MAX.) V
2
(MIN.)
5' (1.52m) 5' (1.52m) 4.5' (1.37m)
V + V
1
+ V
2
+ H + H
1
MAX. = 40' (12.2m)
V
H
V
2
V
1
H
1
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).