Vermont Casting D232 - Manual (Page 14)

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GRAVEL
DRAIN
FIRESTOP
FOUNDATION WALL
WINDOW WELL
SNORKEL
GROUND
24"/608mm
MINIMUM*
A minimum of 24"/608mm
vertical pipe must be installed
when using the snorkel kit.
The 22" vertical rise (center to
center) of the snorkel may be
included for calculation of max.
horizontal run.
*
7" PIPE SCREWS
4" CLEARANCE
*
Fig. 22
1. Establish vent hole through the wall (Fig. 13,14 & 15).
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.
See Fig. 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 4 and 7 inch snorkel collars.
6. Slide into vent pipe and secure to the wall.
7. Level the soil so as to maintain a 4" clearance below
snorkel. See Fig. 22.
DO NOT BACK FILL AROUND SNORKEL.
SOIL SHOULD NOT BE LESS THAN 4"
BELOW SNORKEL.
FOUNDATION
RECESS SNORKEL
SCREWS
WALL
SCREWS
SHEET METAL
WATERTIGHT
SEAL
AROUND
PIPE
If the foundation is recessed, use recess brackets (not
supplied) for securing lower portion of the snorkel. Fasten
brackets to wall first and then secure to snorkel with self drilling
#8 x 1/2 sheet metal screws. It will be necessary to extend the
vent pipes out as far as the protruding wall face (Fig. 22).
Fig. 23
VERTICAL THROUGH THE ROOF
APPLICATIONS
This Gas Fireplace has been approved for,
a) Vertical installations up to 40 feet (12 metres) in height.
Up to a 10 ft. horizontal vent run can be installed within
the vent system using a maximum of two 90
o elbows.
(Fig. 24)
b) Up to two 45 o elbows may be used within the horizontal
run. For each 45 o elbow used on the horizontal level
the maximum horizontal length must be reduced by 18
inches.
Example: Maximum horizontal length
0 - 45 o elbows 10 ft.
1 - 45 o elbows 8.5 ft.
2 - 45 o elbows 7 ft.
Ensure sidewall venting clearances are observed.
If installing a snorkel a minimum 24" vertical rise is
necessary. The maximum horizontal run with the 24"
vertical pipe is 36" (915mm). This measurement is
taken from the collar of the fireplace to the face of the
exterior wall. See vent graph for extended horizontal
run if the vertical exceeds 24".
Fig. 24
MAXIMUM
10 FT
(305cm)
PIPE STRAPS
EVERY 3’
(92cm)
MINIMUM
8 FT./
MAXIMUM
40 FT.
VERTICAL
RISE