Napoleon L38N Installation Manual page 21

90°
90°
H
V
1
V and H are measured from the center of the vent elbows
This example represents a vent that has a maximum of three 90º elbows, a combined horizontal vent length (H ) of
10 feet and a combined vertical vent length (V ) of 8 feet.
Since the vent is located in the dark shaded area, it is within the acceptable vent configuration
minimum venting requirements
H
2
V
2
V
1
Base of
air collar
V
0'
Base of
air collar
40'
30'
20'
1-3 elbow zone
15'
10'
H
1
5'
1
5'
0'
V = V + V = 8 ft
1 2
H = H + H = 10 ft
1 2
H
2
V
2
10' 15'
H
W415-1707 / 07.04.17
EN
20'
21