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minimum venting requirements - natural gas
EN
3.3
horizontal termination (natural gas)
40'
38 1/2'
(462")
30'
V
20'
15'
10'
5'
1 7/8'
(22") min.*
0'
Base of
air collar
0'
18
W415-4121 / B / 04.20.23
TLV50 / TLV62 / TLV74
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.
5'
10'
1 1/2'
(18")
max.*
Refer to appliance
PVA instructions
1-6 elbow zone
for other venting
1-5 elbow zone
1-4 elbow zone
1-3 elbow zone
1-2 elbow zone
1 elbow zone
15'
20'
H
specific GPV/
configurations.
25'
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