21
75D2525
DVM Series Direct Vent Gas Fireplace
VentIng InstallatIon
note: #1222da reducer must be used when 4x6
B\,
"
venting is preferred. #7tdVp58 reducer must be used
when 4"x7" venting is preferred. reducer must be
installed directly onto unit at fireplace collar before
vertical rise.
Below grade InstallatIons
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.
ensure that sidewall venting clearances are observed.
If venting system is installed below ground, we recom-
mend a window well with adequate and proper drainage
to be installed around the termination area.
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 fireplace (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). Refill 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 6
B\,
" or 4" x 7" Venting
VO584-100
Vent Opening
2/99 djt
9
Z\x
"
(241 mm)
9
Z\x
"
(241 mm)
combustible wall
framing
VO584-100
7
Z\x
"
(190 mm)
FP1965
below grade install
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
portion of the
snorkel. Fasten
brackets to wall
first, then secure
to snorkel with
self drilling #8
x 1/2 sheet
metal screws.
It will be nec-
essary to extend vent pipes out as far as the protruding
wall face.
Figure 28
FP1966
snorkel
Figure 28 -
Snorkel Installation, Recessed Foundation
Foundation
Recess
Watertight Seal
Around Pipe
Sheet Metal
Screws
Snorkel
Wall Screws
FP1966
w
arn
Ing
•
do not back fill around snorkel.
•
a clearance of at least 4" must be
maintained between the snorkel and
the soil.
