4 Termination Locations
A. Vent Termination Minimum Clearances
WARNING
Fire Risk. Explosion Risk.
Maintain vent clearance to combustibles as specified.
•Do not pack air space with insulation or other materials.
Failure to keep insulation or other materials away from vent pipe may cause fire.
Measure vertical clearances from this surface.
Measure horizontal clearances from this surface.
(See Figure 4.4 for specific clearances)
Figure 4.1
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2 FT. | 20 INCHES MIN. | VERTICAL |
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| DISCHARGE |
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GAS DIRECT VENT |
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TERMINATION CAP |
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| 12 | X |
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| ROOF PITCH |
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| H (MIN.) - MINIMUM HEIGHT FROM ROOF |
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Flat to 6/12 | 1.0* |
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Over 6/12 to 7/12 | 1.25* |
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Over 7/12 to 8/12 | 1.5* |
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Over 8/12 to 9/12 | 2.0* |
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Over 9/12 to 10/12 | 2.5 |
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Over 10/12 to 11/12 | 3.25 |
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Over 11/12 to 12/12 | 4.0 |
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Over 12/12 to 14/12 | 5.0 |
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Over 14/12 to 16/12 | 6.0 |
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Over 16/12 to 18/12 | 7.0 |
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Over 18/12 to 20/12 | 7.5 |
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Over 20/12 to 21/12 | 8.0 |
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* 3 foot minimum in snow regions |
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Figure 4.2 Minimum Height from Roof to Lowest Discharge | Î | |||||
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Figure 4.2 specifies minimum vent heights for various pitched roofs.
GAS, WOOD OR FUEL |
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OIL TERMINATION | B |
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GAS
CTERMINATION
A
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| Gas | Wood & Fuel Oil | Comments |
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| Termination | Termination |
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| A | 6 in. | 20 in. min. | Horizontal distance between terminations |
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| B | 20 in. | 24 in. min. | Distance to perpendicular wall |
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| C | 18 in. | 18 in. | Vertical distance between terminations |
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Figure 4.3 Multiple Vertical Termination | Î | |||||
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10 | Hearth & Home Technologies • |