Sketch courtesy carson dunlop.
Double wall chimney pipe clearance.
Once these clearances are met you must convert your stove pipe to class a chimney pipe for proper venting of your stove.
Double wall stove pipe is used to make the connection from the chimney or chimney kit to the appliance in the final interior run.
Double wall pipe should not be cut.
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Class a chimneys 2 to 2 1 2 clearance.
Using a heat shield on a single wall stovepipe allows you to reduce the clearances from 18 to 6 to the wall and 9 to the ceiling.
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B vents 1 clearance.
Dvl double wall stovepipe completes the venting system when used with one of duravent s chimney products such as duratech duraplus or duraplus htc.
650 c chimneys 2 clearance also see super chimneys 629 chimneys.
Most of the double wall stove pipe allows for 6 clearance from wall combustibles and 8 from ceiling combustibles.
To 6 in the closest clearance to a wall of any connector pipe.
This system is ulc s641 certified.
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Double wall stove pipe can reduce the clearance needed to combustibles in many situations and typically has a stainless steel inner wall that will provide a much loger time of service that a typical single wall setup.
For example a single wall stove pipe requires 18 inches of clearance from ceilings or walls.
Class a b vent 650c metal chimney fire clearance requirements.
Carson dunlop s sketch summarizes combustible clearance requirements for the three main types of metal chimneys.
Double wall stove pipe on the other hand requires only 8 inches of clearance from the ceiling and 6 inches from a wall.
Many think stovepipe can run from the wood stove right up through the ceiling and roof.
This pipe has a clearance of only 6 to combustible materials and keeps flue gases warm for better draft.
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When combining lengths remember to subtract 1 5 from each to account for overlap.
Double walled or close clearance stove pipe is used to connect your stove to the chimney.
