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112127-01C
13
ventinG instaLLation
Continued
Venting with Three 90° Elbows
Vertical (V) Horizontal (H1) Horizontal (H1) +
Horizontal (H2)
6' min.
4' max.
8' max.
7' min.
6' max.
12' max.
8' min.
8' min.
20' max.
20' max.
8' max.
20' max.
Figure 19 - Horizontal Termination
Configuration for Venting Using Two 90°
Elbows with Termination at 90° with Stove
Figure 17 - Horizontal Termination
Configuration for Venting Using One 90°
Elbow
Horizontal Venting
Vertical (V) Horizontal (H)
52" min.
26" max.
63" min.
49" max.
86" min.
96" max.
91" min.
20' max.
Figure 18 - Horizontal Termination
Configuration for Venting Using Three
90° Elbows
Venting with Two 90° Elbows
Vertical (V) Horizontal (H1) +
Horizontal (H2)
6' min.
4' max.
7' min.
6' max.
8' min.
10' max.
20' max.
12' max.
INSTALLATION FOR VERTICAL
TERMINATION
NOTICE: Use rigid pipe only. Flex
venting is not to be used with a
vertical termination.
1. Determine the route your vertical venting
will take. If ceiling joists, roof rafters, or
other framing will obstruct the venting
system, consider an offset (see Figure 20)
to avoid cutting load bearing members.
Figure 20 - Offset with Wall Strap and
45° Elbows
45° Elbow
Wall Strap
Roof
Flashing
Ceiling Firestop
