Vermont Castings, Majestic Products: DVR33
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 necessary to extend vent pipes out as far as the protruding wall face (Fig. 29).
•Up to two 45° elbows may be used within the horizontal run. For each 45° elbow used on the
horizontal plane, the maximum horizontal length must be reduced by 18” (450 mm).
Example: Maximum horizontal length
No elbows | = | 10’ (3 m) |
1 x 45° elbows | = | 8.5’ (2.6 m) |
2 x 45° elbows | = | 7’ (2.1 m) |
Foundation
Recess
Watertight
Seal Around
Pipe
Snorkel
Wall screws
Sheetmetal screws
CFM139
• A minimum of an 8’ (2.5 m) vertical rise is required. |
• Two sets of 45° elbows offsets may be used within |
the vertical sections. From 0 to a maximum of 8’ |
(2.5 m) of vent pipe can be used between elbows |
(Fig. 30). |
• 7DVCS supports offsets (Fig. 32). This application |
will require that you first determine the roof pitch |
and use the appropriate starter kit. (See Venting |
Components List). |
• The maximum angular variation allowed in the |
system is 270° (Fig. 31). |
• The minimum height of the vent above the highest |
Fig. 29 Snorkel installation, recessed foundation.
Vertical Through-the-Roof Applications
This Gas Fireplace has been approved for,
point of penetration through the roof is 2’ (610 mm) |
(Fig. 33). |
•Vertical installations up to 40’ (12 m) in height. Up to
a 10’ (3 m) horizontal vent run can be installed within the vent system using a maximum of two 90° elbows
(Fig. 30).
Max. 40' (12 m) |
Min. 7.5' (2.3 m) |
*
45 degree elbows
*
*Maximum 8' (2.5m)
Max. 10' (3.1 m) |
TTR max dim |
Fig. 30 Support straps for horizontal runs. |
18 |
TTR_max45
Fig. 31 Maximum elbow usage.
10004920