Desa DVF36TCR - Manual (Page 16)

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Venting with Two
90° Elbows
Vertical Horizontal
(V
1
) (H)
5' min. 6' max.
6' min. 12' max.
' min. 18' max.
8' min. 20' max.
Figure 28 - Vertical Rigid Venting
Configuration Using Two 90° Elbows
Venting with One 90° Elbow
Vertical (V) Horizontal (H)
5' min. 2' max.
6' min. 4' max.
' min. 6' max.
8' min. 8' max.
20' max. 8' max.
Figure 27 - Vertical Rigid Venting
Configuration Using One 90° Elbow
Venting with Two 90° Elbows
Vertical (V) Horizontal (H
1
) +
Horizontal (H
2
)
5' min. 2' max.
6' min. 4' max.
' min. 6' max.
8' min. 8' max.
20' max. 8' max.
Figure 26 - Vertical Rigid Venting
Configuration Using Two 90° Elbows
with Two Horizontal Runs
5. Complete the cathedral ceiling installation
by following the same procedures outlined in
steps 2 through 7 for Flat Ceiling Installation,
page 14.
Vertical Termination Configurations
Figures 26 through 29 show four different configu-
rations for vertical termination. These minimum
vertical rises are based on horizontal 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.
Any offset pitch of 45° or less must be considered
horizontal and sized within the maximum allow-
able lengths listed in the following examples. All
connections must be sealed with high temperature
silicone sealant as specified in the second warning
statement on page 10.
VENTING INSTALLATION
INSTRUCTIONS
Continued
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.