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21
75D2525
DVM Series Direct Vent Gas Fireplace
B\,
When it is not possible to meet the required vent terminal
clearances of 12" above grade level, a snorkel kit is recom-
mended. It allows installation depth down to 7" (178 mm)
below grade level. The 7" (178 mm) is measured from the
center of the horizontal vent pipe as it penetrates through
the wall.
If installing a snorkel, a minimum 24" vertical rise is nec-
essary. The maximum horizontal run with the 24” vertical
pipe is 36". This measurement is taken from the collar of
the replace (or transition elbow) to the face of the exterior
wall. Refer to the Sidewall Venting Graph for extended
horizontal run if the vertical exceeds 24".
1. Establish vent hole through the wall. Page 16, Figure
17.
2. Remove soil to a depth of approximately 16" below base
of snorkel. Install drain pipe. Install window well (not
supplied). Rell hole with 12" of coarse gravel leaving
a clearance of approximately 4" below snorkel. Figure
27.
3. Install vent system.
4. Ensure a watertight seal is made around the vent pipe
coming through the wall.
Figure 26 -
Exterior Wall Framing Dimensions
for 4 x 6B\," or 4" x 7" Venting
9Z\x"
(241 mm)
9Z\x"
(241 mm)
VO584-100
7Z\x"
(190 mm)
24”
Minimum
Figure 27 -
Below Grade Installation
Screws
Minimum
4" Clearance
Ground
Window
Well
Gravel
Drain
Foundation Wall
Firestop
FP1965
5. Apply high temperature sealant caulking (supplied)
around the 5" and 8" snorkel collars.
6. Slide the snorkel into the vent pipes and secure to the
wall.
7. Level the soil so as to
maintain a 4" clearance
below snorkel. Figure 27
If the foundation
is recessed, use
recess brackets
(not supplied) for
securing lower
p o r t i o n o f th e
snorkel. Fasten
brackets to wall
rst, then secure
to snorkel with
self drilling #8
x 1/2 sh eet
metal screws.
It will be nec-
essary to extend vent pipes out as far as the protruding
wall face. Figure 28
Figure 28 -
Snorkel Installation, Recessed Foundation
Foundation
Recess
Watertight Seal
Around Pipe
Sheet Metal
Screws
Snorkel
Wall Screws
FP1966
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