24
51D0528
VERTICAL THROUGH-THE-ROOF APPLICATIONS
This Gas Fireplace has been approved for,
• Vertical installations up to 40' (12m) in height. Up to a 10' (3m) horizontal vent run can be installed within the vent system
using a maximum of two 90° elbows.
See Figure 31.
• Install restrictor disk on vertical runs of 10' or more.
Figure 31 - Support Straps for Horizontal Runs
VENT INSTALLATION
Figure 32 - 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’ (3m)
1x45° elbows = 8.5’ (2.6m)
2x45° elbows = 7’ (2.1m)
• A minimum of an 8' (2.5m) 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.
See Figure 32.
• The maximum angular variation allowed in the
system is 270°.
See Figure 32.
• See termination height on page 26.
40' Maximum Height
8' Minimum Height
40' Maximum Height
8' Minimum Height
10'
Maximum
10'
Maximum
1
2
3
4
1
2
3
4
Support Straps
Every 3'
Support Straps
Every 3'
Horizontal
Example:
Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total Angular Variation = 270°
Support
Straps
Every 5'
Vertical
