FMI DVF36 - Page 18

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Vertical (V) Horizontal (H
1
) +
Horizontal (H
2
)
5' min. 2' max.
6' min. 4' max.
7' min. 6' max.
8' min. 8' max.
20' max. 8' max.
Figure 29 - Vertical Rigid Venting
Conguration Using Two 90° Elbows
with Two Horizontal Runs
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Vertical (V) Horizontal (H)
5' min. 2' max.
6' min. 4' max.
7' min. 6' max.
8' min. 8' max.
20' max. 8' max.
Figure 30 - Vertical Rigid Venting
Conguration Using One 90° Elbow


Vertical (V
1
) Horizontal (H)
5' min. 6' max.
6' min. 12' max.
7' min. 18' max.
8' min. 20' max.
Figure 31 - Vertical Rigid Venting
Conguration Using Two 90° Elbows
VENTING INSTALLATION
Continued
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Figures 29 through 32 show four different
congurations for vertical termination. These
minimum vertical rises are based on horizon-
tal runs with a minimum of 1/4" upwards pitch
per foot and do not reect constraints on a
vertical system with 45° or greater offset.
45° Starter Elbow
Note: Install restrictor
into inner collar of
replace as shown.
45° Starter Elbow
Note: Install restrictor
into inner collar of
replace as shown.
45° Starter
Elbow
Note: Install restrictor
into inner collar of
replace as shown.
Any offset pitch of 45° or less must be
considered horizontal and sized within the
maximum allowable lengths listed in the fol-
lowing examples.