Direct Vent Pipe Clearance

If you are using a b vent typically a double walled air insulated vent for gas appliances typically you ll see a fire clearance stamped right into the metal of the chimney stating 1 inch minimum clearance to combustibles as you ll see in this photo.

Direct vent pipe clearance.

Distance from the exhaust vent at the exterior wall to building features such as gas meter outlet windows doors balconies building corners clearance over a driveway or paved sidwewalk. 36 travis 2016 clearance to each side of center line extended above the gas meter regulator assembly. The general rule of thumb however is a 1 inch clearance all the way around for vertical vent runs. Clearance distance from gas vent termination cap to any mechanical air supply inlet.

Available pipe sizes lengths. Maintain 3 clearance to combustibles on top. The vent terminal shall be at least 12 inches below 12 inches horizontally from or 12 inches above any door window or gravity air inlet into a building. Nominal 4 id x 6 5 8 od and nominal 5 id x 8 od.

Single wall vents get very hot requiring a 6 in. Direct vent terminal clearance distances. For information on venting gas appliances having draft hoods and other appliances listed to be used with type b gas vent request our type b gas vent. For a gas fireplace exhaust termination cap 3 feet 91cm above if within 10 feet 3m horizontally.

For non direct vent applications that is side wall venting only the required clearance is 7 feet. Because the outer wall of b vent doesn t get all that hot code requires only 1 in. Of clearance between it and combustibles. Vent pipe clearances the following clearances apply to all pipe used with an ortal appliance regardless of which pipe manufacturer is used.

48 travis 2016 clearance to the side of any non mechanical supply air inlet. For venting direct vent gas appliances listed or certified for use with amerivent direct vent. In direct vent applications this clearance distance must be in compliance with local building codes the requirements of the fuel gas supplier for the heating appliance in use and the appliance manufacturer s instructions. Maintain 1 clearance to combustibles on bottom.

Direct vent chimney systems are specialized. Maintain 1 clearance to combustibles on entire circumference.