W415-1710 / B / 08.17.18
EN
22
minimum venting requirements - natural gas
3.4 vertical termination
10’
10’
15’
15’
20’
20’
30’
40’
5’
5’
6’
0 elbow zone
2 elbow zone
2-3 elbow zone
2-4 elbow zone
2-5 elbow zone
2-6 elbow zone
2-7 elbow zone
0’
0’
Base of
air collar
V+H ≤ 40 ft. (For longer vent runs,
a power vent is required).
H ≤ 20 ft.
V + H are measured from the
centre of vent elbows. Elbows are
considered as 90º.
Two 45º elbows = One 90º elbow.
ALL APPLIANCES
(NATURAL GAS ONLY)
A 6’ (1.83m) minimum vertical rise is considered the minimum practical dimension for
the specific appliance enclosure and a minimal building structure. However, a greater
minimum vertical rise may be needed to suit the specific application constraints or
local codes and / or regulatory requirements.
note:
