Vents
Vents/Chimneys General
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G2426.1 |
General |
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G2426.2 |
Connectors required |
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G2426.3 |
Insulation shield |
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G2426.5 |
Installation |
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G2426.6 |
Supports |
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G2426.7 |
Protection against damage |
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G2427.5.3 |
Chimney termination |
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G2427.5.4 |
Size of chimney |
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G2427.4 |
Type of vent used |
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G2427.4.1 |
Plastic piping |
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G2427.5.1 |
Factory built chimneys |
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G2427.5.2 |
Masonry chimneys |
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G2427.5.6 |
Chimneys service other appliances |
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G2427.5.8 |
Clean outs |
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G2427.5.10 |
Insulation shield |
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Gas Vents
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Code Reference |
Item or Area |
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G2427 |
General |
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G2427.3.1 |
Appliance draft requirements |
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G2427.3.3 |
Mechanical draft systems |
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G2427.6.4 |
Vent termination requirements |
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G2427.6.5 |
Minimum height Requirements |
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G2427.6.6 |
Roof Termination |
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G2427.6.8 |
Outside wall penetrations |
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G2427.3.4 |
Prohibited to pass through ductwork |
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G2427.3.5 |
Above ceiling spaces |
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Installation of exterior vents beside vertical walls
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G2427.6.4.1 |
Decorative shrouds |
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G2427.6.5 |
Minimum Height |
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G2427.6.6 |
Roof terminations |
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G2427.6.7 |
Forced air inlets |
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G2427.6.8 |
Exterior wall penetrations |
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G2427.6.9 |
Size of gas vents |
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Section Overviews
G2427 Venting of appliances
G2427.10 Vent connectors for category 1 appliances
G2427.11 Vent connectors for Category II, III and IV appliances
G2427.3 Design and construction
G2427.4 Type of venting system to be used
G2427.5 Masonry, metal and factory built chimneys
G2427.6 Gas Vents
G2427.7 Single walled metal pipe
G2427.8 Venting system termination location
G2427.9 Condensation drainage
G2427.12 Draft hoods and draft controls
G2427.13 Manually operated dampers
G2427.14 Automatically operated dampers
G2427.15 Obstructions
Roof Slope Table for vents
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ROOF SLOPE |
H (minimum) ft |
ROOF SLOPE |
H (minimum) ft |
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Flat to 6/12 |
1 |
Over 12/12 to 14/12 |
5 |
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Over 6/12 to 7/12 |
1.25 |
Over 14/12 to 16/12 |
6 |
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Over 7/12 to 8/12 |
1.5 |
Over 16/12 to 18/12 |
7 |
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Over 8/12 to 9/12 |
2 |
Over 18/12 to 20/12 |
7.5 |
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Over 9/12 to 10/12 |
2.5 |
Over 20/12 to 21/12 |
8 |
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Over 10/12 to 11/12 |
3.25 |
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Over 11/12 to 12/12 |
4 |
Section 2428 covers category 1 vent sizing and installation. This chapter includes tables/charts for installation.