18
20306745
VWDV70 Series Gas Fireplace
VENTING INSTALLATION
Example:
Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total Angular Variation = 270°
Figure 21 -
Maximum Elbow Usage
1
2
3
4
36" (914 mm)
Minimum
FP1180
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 36" (914 mm) vertical
rise is necessary. The maximum horizontal run with the 36”
(914 mm) vertical pipe is 36". This measurement is taken
from the collar of the
fi
replace (or transition elbow) to the
face of the exterior wall. See the Sidewall Venting Graph
for extended horizontal run if the vertical exceeds 12".
1. Establish vent hole through the wall.
2. Remove soil to a depth of approximately 16" (406 mm)
below base of snorkel. Install drain pipe. Install window
well (not supplied). Re
fi
ll hole with 12" (305 mm) of
coarse gravel leaving a clearance of approximately 4"
(102 mm) below snorkel.
Figure 22
3. Install vent system.
4. Ensure a watertight seal is made around the vent pipe
coming through the wall.
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 19
Figure 22 -
Below Grade Installation
FP2134
Screws
Minimum
4" Clearance
Ground
Window
Well
Gravel
Drain
Foundation Wall
Firestop
36" (914 mm)
Minimum
If the foundation is recessed, use recess brackets (not
supplied) for securing lower portion of the snorkel. Fasten
brackets to wall
fi
rst, then secure to snorkel with self drilling
#8 x
1
⁄
2
" sheet metal screws. It will be necessary to extend
vent pipes out as far as the protruding wall face.
Figure 23
Figure 23 -
Snorkel Installation, Recessed Foundation
Foundation
Recess
Watertight Seal
Around Pipe
Sheet Metal
Screws
Wall Screws
Snorkel
W
ARNING
•
Do not back fi ll around snorkel.
•
A clearance of at least 4" must be
maintained between the snorkel and
the soil.
