Vertical Through-The-Roof Applications & Installation - Vermont Castings RFSDV22 Homeowner's Installation And Operating Manual

Do Not Back Fill Around Snorkel. Soil
Should Not Be Less Than 4" Below
Snorkel.
Firestop
7" Pipe
24"
(608mm)
Minimum
FP1341
Fig. 21 Below grade installation.
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)
Foundation
Recess
Watertight Seal
Around Pipe
Fig. 22 Snorkel installation, recessed foundation.
Vertical Through-the-Roof Applications
This Gas Fireplace has been approved for,
•
Vertical installations up to 40 feet (12m) in height.
Up to a 10 ft. horizontal vent run can be installed
within the vent system using a maximum of two 90
elbows. (Fig. 23)
•
Up to two 45 o elbows may be used within the hori-
zontal run. For each 45
tal level the maximum horizontal length must be
reduced by 18".
10001028
Snorkel
Screws
4" Clearance
Ground
Window Well
Gravel
Drain
Foundation Wall
* 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.
Snorkel
Wall Screws
Sheet Metal
Screws
BG401
o
elbow used on the horizon-
RFSDV22/32/42 Freestanding Direct Vent Fireplace
Example: Maximum horizontal length
0 -
1 -
2 -
Minimum 8'
(2.4m)
Maximum
40' (12.2m)
Fig. 23 Vertical through the roof requirements.
•
A minimum of an 8 ft. vertical rise.
•
Two sets of 45 degree elbow offsets within these
vertical installations. From 0 to a maximum of 8 ft. of
vent pipe can be used between elbows. (Fig. 24)
•
7DVCS must be used to support offsets. (Fig. 25)
This application will require that you first determine
the roof pitch and use the appropriate starter kit.
(See Venting Components List)
•
The minimum height of the vent above the
highest point of penetration through the roof is 2
feet. (Fig. 26)
o
Fig. 24 Typical offset installation.
o
45 elbows 10 ft. (3m)
o
45 elbows 8.5 ft. (2.6m)
45 o elbows 7 ft. (2m)
Maximum
10' (305cm)
Support Straps
Every 3' (914mm)
Max. 8'
(2.44m)
45°
40' (12m)
Max. 8'
(2.44m)
45°
FP1342
FP1343
13