Vertical Through-The-Roof Applications & Installations - Vermont Castings DVA4136 Installation Instructions And Homeowner's Manual

DVA4136 Series Direct Vent Gas Fireplace
Foundation Recess
Recess Brackets
Watertight Seal
Around Pipe
Fig. 27 Snorkel installation, recessed foundation.
Vertical Through-the-Roof Applications
BG401
Snorkel
This Gas Fireplace has been approved for:
2/10/99 djt
•
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. 28)
Max. Height
40' (12m)
Min. Height
7���' (2.3m)
Fig. 28 Support straps for horizontal runs.
•
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).
18
Snorkel
Wall Screws
Sheet Metal
Screws
BG401
Max. 10' (3m)
Pipe Straps Every
3' (914mm)
FP1244
FP1244
through the roof
max/min dims
12/02
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 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. 29)
•
7DVCS must be used to support offsets. (Fig. 31)
This application will require that you first determine
the roof pitch and use the appropriate starter kit.
(Refer to Venting Components List)
•
The minimum height of the vent above the highest
point of penetration through the roof is 2' (610 mm).
(Fig. 33)
4
1 + 2 + 3 + 4 = 270°
1
Fig. 29 Typical offset application.
FP1245
through the roof
90 & 45 degree
12/02
Max. 8' (2.4m)
3
2
FP1245
10010270