1.Establish vent hole through the wall. (Fig. 22)
2.Remove soil to a depth of approximately 16" (406 mm) below base of snorkel. Install window well (not sup- plied). Refill hole with 12" (305 mm) of coarse gravel leaving a clearance of approximately 4" (102 mm) below snorkel. (Fig. 28)
3.Install vent system. Refer to Page 12, Steps 2 through 5.
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" snorkel collars.
6.Slide into the vent pipe and secure to the wall.
7.Level the soil to maintain a 4" (102 mm) clearance below snorkel. (Fig. 28)
Do not backfill around snorkel. A clearance of at least 4" (102 mm) must be maintained below the snorkel.
DVHVAC36
Vertical Through-the-Roof Applications
This gas fireplace has been approved for:
•Vertical installations up to 40' (12 m) in height. Up to 10' (3 m) horizontal vent run can be installed within the vent system using a maximum of three (3) 90° elbows.
Maximum
10' (3m)
Minimum 8'
(2.4m)/ Maxi-
mum 40' (12m)
Vertical Rise
Pipe Straps Every 3' (914mm)
Zero Clearance
Sleeve
Firestop
7" Pipe 
24" (608mm)
Minimum*
| 7TDVSNORK |
| (Snorkel) |
Screws | 4" (102mm) |
| |
| Clearance |
| Min. |
| Window |
| Well |
Gravel
Drain
Foundation Wall
*A minimum of 24" (608mm) vertical pipe must be installed when using the 7TDVSNORK Kit.
BG400
CFM148
Fig. 30 Support straps for horizontal runs.
• Up to two (2) 45° elbows may be used within the |
horizontal run. For each 45° elbow used on the hori- |
zontal level, the maximum horizontal length must be |
reduced by 18" (457 mm). |
Example: Maximum horizontal length: |
0 x 45° elbows = 10' (3 m) |
1 x 45° elbows = 8¹⁄₂' (2.6 m) |
2 x 45° elbows = 7' (2.1 m) |
• A minimum of an 8' (2.4 m) vertical rise. |
• Two (2) sets of 45° elbows offset within these verti- |
cal installations. From 0 to a maximum of 8' (2.4m) |
of vent pipe can be used between elbows. (Fig. 30) |
Fig. 28 Below grade installation.
| Snorkel |
Foudation Recess | Wall Screws |
| |
Recess Bracket |
|
Watertight Seal | Sheet Metal |
Around Pipe | Screws |
BG401
Fig. 29 Snorkel installation, recessed foundation.
• 7DVCS must be used to support offsets. (Fig. 31) |
This application will require that you first determine |
the roof pitch and use the appropriate 7DVSKV (A, B |
or F). Refer to Venting Components on Page 21. |
Vertical Through-the-Roof Installation
1.Locate your fireplace.
2.Plumb to center of the 4" flue collar from ceiling above and mark position.
3.Cut opening equal to 9³⁄₈" x 9³⁄₈" (240 x 240 mm).
4.Proceed to plumb for additional openings through the roof. In all cases, the opening must provide a minimum of 1" clearance to the vent pipe, i.e., the hole must be at least 9³⁄₈" x 9³⁄₈" (240 x 240 mm).
10001195 | 17 |