Hi, I live in NY I have a wood burning stove with 6" smoke pipe, my unit is in the corner caddy corner. I have at least 18 inches all around but I am coming up with a 24 inch straight single wall dura black into a 90 degree into a 45 then a straight out the wall through the thimble.

Had to use the 45 to bring it away from the wall so I have proper clearances used it one year this way with no problems, is this OK for insurance company's or is this illegal having a 45 degree in the loop.

Thanks in advance

I believe the 45 is okay, better than a 90. But six inch wood stove pipe sounds a little small(is this inside diameter, or outside? )

Oh just reread your question. Singe wall pipe is not allowed on any portion of a wood burning stove. Hopefully HVAC1000 can give you minimum pipe requirements,

18 inches clerance to combustible surfaces is required for all single wall pipe on wood and oil burners. Now the manufactures instructions will be considered the code if it is more strict. This rule is for my area of the world and it could be different in your state.

Naturally the less fittings the better but I do not believe a 45 degree fitting will violate the code.

There is also a clerance reduction method available for real tight fits. You use metal panning or another piece of pipe to space it off the wall or the pipe using noncombustible spacers (short copper or metal electrical conduit cut in one inch pieces for the spacer.) Then you put a screw into the metal panning or pipe add the one inch noncombustible spacer then drive the screw into the wall or other item you are trying to protect.

See page 2 on the left side.

http://www.town.dennis.ma.us/dept/building/Website%20Forms%20(PDF%20Format)/Woodstove%20Regulations.pdf

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Originally Posted by hvac1000

18 inches clerance to combustible surfaces is required for all single wall pipe on wood and oil burners. Now the manufactures instructions will be considered the code if it is more strict. This rule is for my area of the world and it could be different in your state.

Naturally the less fittings the better but I do not believe a 45 degree fitting will violate the code.

There is also a clerance reduction method available for real tight fits. You use metal panning or another piece of pipe to space it off the wall or the pipe using noncombustible spacers (short copper or metal electrical conduit cut in one inch pieces for the spacer.) Then you put a screw into the metal panning or pipe add the one inch noncombustible spacer then drive the screw into the wall or other item you are trying to protect.

See page 2 on the left side.

http://www.town.dennis.ma.us/dept/bu...egulations.pdf

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Thanks a lot I just read booklet again and it said you are allowed no more than two 90 degree turns from unit into wall, so my 90 going to 45 should be good. On caddy corner it gives you 18 inches from corner of unit to wall on single wall installation. I guess because its not a large area only the corner of unit from wall, after a couple of hours wall gets warm but not Hot.

Thanks so much for your advice and time

No problem but always remember to operate your wood burner in a safe fashion and keep the chimney clean.

Be sure to check with your local codes office and your insurance company. If you find you are violating their stricter requirements you can install a noncombustible surface over the combustible one with things such as standoffs to get you in compliance.