Connections
19
Venting Connection (continued)
Maximum vent length
Maximum equivalent v ent length (all
models) is 20 ft. for 3” of pipe.
Maximum equivalent v ent length (all
models) is 30 ft. for 4” of pipe.
Do not exceed maximum vent length.
The minimum equivalent vent length for
all models is 10 ft.
Example of maximum vent length
calculation:
Equivalent length
12 ft. of pipe length
3” dia.
12 ft.
2 90° elbows 3“
dia.
6 ft.
Total equivalent
length
18 ft.
Vent t e rmination not included in vent
length calculation.
Fitting
Equivalent length
90° elbow
(3” and 4” pipe)
3 ft.
45° elbow
(3” and 4” pipe)
2 ft.
5167 450 v1.4
IMPORTANT
IMPORTANT
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