Below are the allowable clearances for a number of common situations.
Zero clearance chimney pipe.
Requires a steel pipe chimney added to the home during or after construction.
5 8 duratech is a double wall all fuel chimney system for use withwood stoves fireplaces furnaces boilers ranges water heaters or other appliances fueled by wood oil coal or gas and zero clearance fireplaces.
Since the flue of a zero clearance fireplace is usually an 8 round pipe as you can see in the picture below that runs up the interior the wooden brick enclosures they will get filled up and closed down quicker than a masonry fireplace during use.
Clearance is the distance that is considered to be safe between a heat producing appliance chimney chimney liner vent pipe vent connector or other hot surfaces and combustible materials.
If used to vent a wood stove the chimney is likely to be too cool leading to a dangerous creosote build up a source of potentially fatal chimney fires.
For example if you purchase a zero clearance wood burning fireplace with an 8 flue and want to use the simpson duravent duratech chimney pipe you would need to use the duravent dvl 6 inch double wall stovepipe to stove flue adaptor.
Elbows are often needed in chimney systems for a variety of reasons.
This anchor plate will secure chimney pipes with a six inch diameter.
Known as factory built zero clearance or pre fab fireplaces.
Black pipe used outside will run way cooler flue temperatures than class a chimney and will potentially build up creosote quite rapidly increasing the chance of a chimney fire.
Rock vent pellet chimney pipe is used to safely vent your pellet burning stove or b vent listed appliance.
What are the allowable clearances.
It keeps the outer wall of the chimney cool while ensuring high flue gas temperatures for optimum draft performance.
Solids burn up as carbon which we call soot and can build upon itself to close down the.
Listed with a 1 clearance to combustibles by ulc ord c441.
Our pellet chimney pipe is fabricated with a unique gasket seal system which doesn t require sealant like many other brands on the market today.
Fire safety clearance requirements between metal chimneys combustible materials minimum clearances from combustibles for manufactured metal chimneys for oil gas or other fuel fired appliances using metal chimneys table of clearances for listed flue vent connectors for gas fired heating appliances minimum distance from combustible materials questions answers.
Zero clearance fireplaces and vents are usually not rated for literally zero clearance from combustibles or greater fire clearance distances may be required by local or national fire.
Black single wall stove pipe has a clearance to combustibles of 18 double wall black pipe has a clearance of 6 whereas class a chimney pipe is generally 2.
Unless you are able to.
Factory built fireplaces are easy to spot.