Exhaust Vent Roof Clearance

12 the gross area of the screens or grilles installed in intake and exhaust openings shall be three times that of the duct served.

Exhaust vent roof clearance.

Vegetation must not be allowed to grow within 3 feet of an exhaust vent. Exhaust vent clearance for all climates. An exception is made for non combustible walls such as solid masonry or concrete. Below are more pellet stove exhaust vent clearance details compiled from several installation manuals.

Direct vent exhaust clearance distances for gas fueled appliances. For gas fired water heater vents. Gravity ventilators aura vent w curb mount flange. Roof louvers pop vent.

Sps 323 15 note 1 these clearances apply except if the listing of an appliance specifies different clearance in which case the listed clearance takes precedence. Roof turbine versus the aura ventilator. Table illustrations of the required space between a direct or side wall vent for a gas fired heating appliance and building windows doors corners gas meter air intakes sidewalks balconies decks and other building features. 6 minimum clearance from single wall vent pipe or flue vent connector to any combustible material.

The exhaust vent pipe must extend at least 12 300 mm out past the exterior wall. They exhaust moist air to the outside. Number 2 is a vent for an exhaust fan like those found in bathrooms and laundry rooms. Number 3 is a vent for an attic space called a roof vent or turtle vent they release hot air from the attic.

Exhaust vents must be protected against rain and equipped with back flow prevention features e g flap dampers. Clearance distances are given for a gas appliance b vent at the rooftop. Gravity ventilators aura vent. In all areas exhaust vents should be at least 1 foot above roof surface.

14 the net free area of an air intake or exhaust outlet shall be equal to or greater than the cross sectional area of the duct served. Install a listed horizontal termination cap or if necessary install a 90 elbow and appropriate length of vertical venting. Number 4 is a combustion vent for an appliance such as a furnace boiler water heater or. Ul documentation for all products.

Single wall vent pipes cannot pass through a ceiling floor firewall or wall. Metal b vent chimney clearance distances above and on the roof. Sps 323 15 note 2 if listed type l venting system piping is used the clearance may be in accordance with the venting system listing. We discuss fire safety fire clearances and other gas appliance venting details for b vent chimneys.

Exhaust vents must not be allowed to be obscured or hidden by vegetation.