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78D0011
WDV Series Gas Fireplace
This gas fireplace has been approved for,
• 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.
Figure 18
Horizontal and vertical sections of this vent system
require a minimum 1" clearance to combustibles at the top,
sides and bottom.
Example: Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total Angular Variation = 270°
12" Min.
1
2
3
4
1
2
3
4
FP1179
max bends
Figure 19 -
Maximum Elbow Usage
FP1179
FP1966
snorkel
Figure 17 -
Snorkel Installation, Recessed Foundation
Foundation
Recess
Watertight Seal
Around Pipe
Sheet Metal
Screws
Wall Screws
Snorkel
• 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)
1x45° elbows = 8.5’ (2.6 m)
2x45° elbows = 7’ (2.1 m)
• A minimum of an 12' (3.6 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.
Figure 19
• The maximum angular variation allowed in the
system is 270°. Figure 19
FP1183
max height
40' Maximum Height
12' Minimum Height
10'
Maximum
Support Straps
Every 3'
12" Min.
FP1183
Figure 18 -
Support Straps for Horizontal Runs