Vertical Term. With 3 Elbows; Approved Venting Configuration; Vertical Terminations With Three 90° Elbows - Lopi Berkshire Owner's Manual

Installation
18
Approved Venting Configurations for Vertical Terminations with
Three 90° Elbows
• The termination must fall within the shaded area shown in the chart. Use the indicated restrictor
position.
40' (max)
35 feet
30 feet
25 feet
20 feet
15 feet
10' (min)
5 feet
0 feet
Travis Industries
(Two 90° Vertical and One 45° or 90° Horizontal Elbow)
Restrictor
Position # 5
NOTE:
Horizontal sections require a
1/4" rise every 12" of travel.
H2
This is considered a horizontal
elbow (it does not matter
whether it turns right or left).
It may be a 45° or 90° elbow.
H1
1 0 0 - 0 1 1 5 9
(for qualified installers only)
NOTE:
Restrictor positions are based
upon lab tests. The ideal
restrictor position may vary
slightly, especially when the
termination is near a demarkation
line.
Restrictor
Position # 1
This is considered a
vertical elbow
Horizontal length (max. 24') is calculated
by adding both lengths of horizontal run
(Horizontal Length = H1 + H2).
This is considered a
vertical elbow
40' (max)
35 feet
30 feet
25 feet
20 feet
15 feet
10' (min)
5 feet
0 feet
4 0 4 0 6 2 1