Zero Clearance Sleeve
(if required) Firestop
7” Pipe
24" (610mm)
Minimum*
7TDVSNORK
(Snorkel)
4” (102mm) Clearance Min.
Window 
Well
Gravel
LDVR Series Direct Vent Gas Fireplace
Vertical Through-the-Roof Applications
This Gas Fireplace has been approved for:
1.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 90° elbows.
Maximum
Drain
Minimum
10’ (3 m)
Foundation Wall
*A minimum of 24” (608mm) vertical pipe must be installed when using 7TDVSNORK Kit.
BG400
8’ (2.4 m) / Maximum
40’ (12 m) Vertical Rise
Pipe Straps Every 3’ (914 mm)
Fig. 31 Below grade installation.
Do not back fill around snorkel. A clearance of at least 4” (102mm) must be maintained between the snorkel and the soil.
CFM148
Fig. 33 Support straps for horizontal runs.
This Gas Fireplace has been approved for:
Foundation Recess
Recess Brackets
Watertight Seal
Around Pipe
Snorkel
Wall Screws
Sheet Metal
Screws
1.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 90° elbows.
2.Up to two 45° elbows may be used within the horizontal run. For each 45° elbow used on the horizontal 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) |
BG401
Fig. 32 Snorkel installation, recessed foundation.
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 protruding wall face. (Fig. 32)
2 x 45° elbows = 7’ (2.1 m) |
3.A minimum of an 8’ vertical rise.
4.Two sets of 45° elbows offsets within these vertical installations. From 0 to a maximum of 8’ (2.4 m) of vent pipe can be used between elbows. (Fig. 34)
5.7DVCS must be used to support offsets. (Fig. 34) This application will require that you first determine the roof pitch and use the appropriate 7DVSKV (A, B or F). (Refer to Venting Components List, Page 21)
10007317 | 19 |