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118531-01C
14
VENTING INSTALLATION
Continued
HORIZONTAL VENT INSTALLATIONS
USING MULTIPLE 90° ELBOWS
The following configurations show the mini
-
mum vertical rise requirements for a horizontal
system using two 90° elbows.
Figure 17 - Horizontal Termination Configuration For Venting Using Two 90° Elbows
Venting with Two 90° Elbows
Vertical (V)
Horizontal (H)+
Horizontal (H
2
)
7' Min.
10' Max
8' Min.
12' Max
9' Min.
14' Max
10' Min.
16' Max
11' Min.
18' Max
13' Min.
20' Max
90°
Elbow
90°
Elbow
TO
H
Figure 18 - Horizontal Termination Configuration for Venting Using Three 90° Elbows
Venting with Two 90° Elbows
Vertical (V) Horizontal (H)
Horizontal (H)+
Horizontal (H
2
)
5' Min.
2' Max.
6' Max
6' Min.
3' Max.
8' Max
7' Min.
4' Max.
10' Max
8' Min.
5' Max.
12' Max
12' Min.
8' Max.
20' Max
20' Min.
8' Max.
20' Max
90°
Elbow
90°
Elbow
90°
Elbow
