Desa VVF36 Owner's Operation And Installation Manual page 15

Horizontal Termination Configurations
Figures 22 and 23 show different configura-
tions for venting with horizontal termination.
Each. figure. includes. a. chart. with. vertical.
minimum/maximum and horizontal maximum
dimensions which must be met. All horizon-
tal terminations require 1/4" rise per 12" of
horizontal run. You must add 1/4" of vertical
height.(V).in.the.following.tables.for.each.foot.
of horizontal run (H).
Horizontal Venting
. Vertical.(V).
. 49.5".min..
(45° elbow, 1' vertical pipe, 90° elbow)
. 60".min..
. 7".min..
. 84".min..
. 13".min..
Figure 22 - Horizontal Termination
Configuration for Rigid Venting Using
One 90° Elbow
56131H
VENTING INSTALLATION
Continued
45°.Starter.
Elbow
Horizontal (H)
17".max.
77".max.
101".max.
15".max.
149".max.
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Venting with Two 90° Elbows
Vertical (V)
. 5'.min..
. 6'.min..
. 7'.min..
. 8'.min..
. 0'.max..
Figure 23 - Horizontal Termination
Configuration for Rigid Venting Using
Two 90° Elbows with Termination at 90°
with Fireplace
INSTALLATION FOR VERTICAL
TERMINATION
NOTICE: Use rigid pipe only. Flex
venting is not to be used with a
vertical termination.
1.. Determine. route. your. vertical. venting.
will take. If ceiling joists, roof rafters, or
other framing will obstruct venting system,
consider.an.offset.(see.Figure.4).to.avoid.
cutting.load.bearing.members.
Roof.
Flashing
().45°.
Elbows
Firestop
Figure 24 - Vertical Cent Pipe Offsets
45°.Starter.
Elbow
Horizontal (H1) +
Horizontal (H2)
4'.max.
8'.max.
10'.max.
15'.max.
0'.max.
Plumber's.
Tape.
Connected.
to.Wall.
Strap
Wall.
Strap
Firestop
().45°.
Elbows
15