Minimum Gas Appliance Vent Clearance From Roof

The location of the flue terminal of a balanced flue appliance room sealed appliance a fan assisted appliance or an appliance designed for outdoor installation shall comply with the figure below.

Minimum gas appliance vent clearance from roof.

Please see these separate articles on b vent clearances. Minimum clearance distance requirements for the exterior vent termination of a gas fireplace heater 8. 1 shall terminate at least 5 feet above the draft hood of the highest appliance connected to the vent. 2 the attached table is the minimum height above a roof for vents not located within 8 feet of a vertical wall or similar obstruction.

This information sheet has been prepared to assist gasfitters in providing the correct flue clearances for gas appliances. Distance required usa 2. An exception is made for non combustible walls such as solid masonry or concrete. 6 inches 15 cm for appliances up to 10 000 btu hr 3 kw 12 inches 30 cm for appliances between 10 000 btu hr 3 kw and 100 000 btu hr 30 kw 36 inches 91 cm for appliances above 100 000 btu hr 30 kw 3.

For gas fired water heater vents. Type b gas vents less than 12 inches in diameter. Type b vent rooftop clearance. 3 chimney vent caps larger than 12 must be located at least 2 feet above the highest point and 2 feet higher than any portion of the building within a horizontal distance of 10 feet.

Type b vent ceiling floor wall clearances. Single wall vent pipes cannot pass through a ceiling floor firewall or wall. B vent rooftop clearance specifications for gas fired appliances heaters. 6 minimum clearance from single wall vent pipe or flue vent connector to any combustible material.

Manufacturers recommendations usually take precedence over local building codes but you won t know for sure which takes precedence or what those manufacturers recommendations are. Typical clearance from an operable window to a direct vented gas appliance vent outlet. Direct vent gas fireplace exhaust termination item clearance distance. Distance required canada 1.

Irc mechanical code irc 2009 chimney clearances. The 2 10 rule states that combustion vents should terminate at least 2 feet above any part of the roof within 10 feet. 84 2 1m 3 note 5. Irc mechanical code section 62.