Designer Series Gas Fireplaces | ventING installation |
vertical through-the-roof applications
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
40' Maximum Height 8' Minimum Height
10'
Maximum
40' Maximum Height
8' Minimum Height
Support Straps
Every 3'
10'
Maximum
Support Straps
Every 3'
FP2308
Figure 30 -
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 plane, the maximum horizontal length must be reduced by 18" (450 mm).
Example: Maximum horizontal length
No elbows | = | 10’ (3 m) |
1 x 45° elbows | = | 8.5’ (2.6 m) |
2 x 45° 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 maximum of 8' (2.5 m) of vent pipe can be used between elbows. Figure 31
•The maximum angular variation allowed in the system is 270°. Figure 31
•The minimum height of the vent above the high- est point of penetration through the roof is 2' (610 mm).
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Example: | Elbow 1 | = | 90° | 2 | |
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| Elbow 2 | = | 45° | ||
| Elbow 3 | = | 45° | 4 | |
| Elbow 4 | = | 90° | ||
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Total Angular Variation | = | 270° |
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Figure 31 -
Maximum Elbow Usage
FP2309
22 | 42D0200 |