Below Grade Installation - Vermont Castings DVM Series Installation And Operating Instructions Manual

VENTING INSTALLATION
9 ⁄ "
1
2
(241 mm)
⁄
9 "
1
2
(241 mm)
Combustible Wall
7 ⁄ "
1
2
(190 mm)
Figure 26 -
Exterior Wall Framing Dimensions
⁄
5
for 4 x 6 " or 4" x 7" Venting
8
NOTE: #1222DA reducer must be used when 4x6
venting is preferred. #7TDVP58 reducer must be used
VO584-100
when 4"x7" venting is preferred. Reducer must be
installed directly onto unit at fireplace collar before
Vent Opening
vertical rise.
2/99 djt
BELOW GRADE INSTALLATIONS
When it is not possible to meet the required vent terminal
clearances of 12" above grade level, a snorkel kit is rec-
ommended. 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.
20306747
Framing
FP1965
VO584-100
5. Apply high temperature sealant caulking (supplied)
6. Slide the snorkel into the vent pipes and secure to the
⁄
"
5
8
7. Level the soil so as to
If the foundation
is recessed, use
recess brackets
(not supplied) for
securing lower
p o r t i o n o f t h e
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
•
•
DVM Series Direct Vent Gas Fireplace
Firestop
24"
Minimum
FP1965
around the 5" and 8" snorkel collars.
below grade install
wall.
maintain a 4" clearance
below snorkel. Figure 27
Foundation
Recess
Watertight Seal
Around Pipe
Figure 28 -
Snorkel Installation, Recessed Foundation
FP1966
snorkel
WARNING
Do not back fill around snorkel.
A clearance of at least 4" must be
maintained between the snorkel and the
soil.
Screws
Minimum
4" Clearance
Ground
Window
Well
Gravel
Drain
Foundation Wall
Figure 27 -

Below Grade Installation

Snorkel
Wall Screws
Sheet Metal
Screws
FP1966
21