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56131H
18
Venting with Two 90° Elbows
Vertical (V) Horizontal (H
1
) +
Horizontal (H
)
. 5'.min..
'.max.
. 6'.min..
4'.max.
. 7'.min..
6'.max.
. 8'.min..
8'.max.
. 0'.max..
8'.max.
Figure 29 - Vertical Rigid Venting
Configuration Using Two 90° Elbows
with Two Horizontal Runs
Venting with One 90° Elbow
Vertical (V) Horizontal (H)
.
5'.min..
'.max.
.
6'.min..
4'.max.
.
7'.min..
6'.max.
.
8'.min..
8'.max.
.
0'.max..
8'.max.
Figure 30 - Vertical Rigid Venting
Configuration Using One 90° Elbow
Venting with Two
90° Elbows
.Vertical.(V
1
) Horizontal (H)
.
5'.min..
6'.max.
.
6'.min..
1'.max.
.
7'.min..
18'.max.
.
8'.min..
0'.max.
Figure 31 - Vertical Rigid Venting
Configuration Using Two 90° Elbows
VENTING INSTALLATION
Continued
Vertical Termination Configurations
Figures. 9. through. 3. show. four. different.
configurations 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 reflect constraints on a
vertical.system.with.45°.or.greater.offset.
45°.Starter.Elbow
Note: Install restrictor
into inner collar of
fireplace as shown.
45°.Starter.Elbow
Note: Install restrictor
into inner collar of
fireplace as shown.
45°.Starter.
Elbow
Note: Install restrictor
into inner collar of
fireplace 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.