24 69D0023
40' Maximum Height
8' Minimum Height
10'
Maximum
Support Straps
Every 3'
40' Maximum Height
8' Minimum Height
10'
Maximum
Support Straps
Every 3'
Support
Straps
Every
5'Vertical
CDV 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 28
Figure 28 - Support Straps for Horizontal Runs
VENT INSTALLATION
Figure 29 - Maximum Elbow Usage
• 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" (450mm).
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 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 maxi-
mum of 8' (2.5 m) of vent pipe can be used
between elbows. Figure 29
• The maximum angular variation allowed in
the system is 270°. Figure 29
• The minimum height of the vent above the
highest point of penetration through the roof
is 2' (610 mm).
1
2
3
4
1
2
3
4
Example: Elbow 1 = 45°
Elbow 2 = 45°
Elbow 3 = 90°
Elbow 4 = 90°
Total Angular Variation = 270°
NOTE: Horizontal sections of this vent system require a
minimum of 3" clearances to combustibles at the top of the
ue unless the vertical run is 7
1
/2 feet or higher the clearances for the
horizontal run is 1" at the top, and 1" clearance at the sides and
bottom until the ue penetrates the outside wall. A minimum
1" clearance all around the ue is acceptable at this point of
penetration.
Vertical sections of this vent system require a minimum
of 1" clearance to combustibles on all sides of the pipe.
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