8" flue to 6" chimney

[Vermontyurt]

Hi all,

I have seen posts that indicate that its OK to increase chimney pipe size but not to code to reduce chimney size. I have some Selkirk 6" chimney pipe that I would like to use but my stove flue is 8".

Just want to confirm that it is not OK to use a 8" to 6" reducer from the stove coller to the stove pipe.


These forums a a great resource for newbies!

 

[bholler]

Hi all,

I have seen posts that indicate that its OK to increase chimney pipe size but not to code to reduce chimney size. I have some Selkirk 6" chimney pipe that I would like to use but my stove flue is 8".

Just want to confirm that it is not OK to use a 8" to 6" reducer from the stove coller to the stove pipe.


These forums a a great resource for newbies!

It is against code to go up or down more than 1". And many times it really doesnt work well anyway. What stove it it for?

 

[Vermontyurt]

Its for a Jotul Combifire 4. From my measurements the flue is 6 5/8 ID and 6 7/8 OD.

 

[bholler]

Its for a Jotul Combifire 4. From my measurements the flue is 6 5/8 ID and 6 7/8 OD.

Yes you can use a 6" chimney with that stove. Because it is not an 8" outlet

 

[Vermontyurt]

FYI Woodsmanspartplus sells a reducer for the Combifire 4 that goes from 175mm to 6". 175 mm translates to 6.9"

 

[bigVusa]

FYI Woodsmanspartplus sells a reducer for the Combifire 4 that goes from 175mm to 6". 175 mm translates to 6.9"

I have the same Jotul combifire. Manufacturer does say that the flue diameter should be 8 inch. But, the OD of the fireplace smoke outlet collar is 7 inches. Now, it did mention that the smoke outlet collar is 8 inches in the manual, but in reality its OD is 7 inches. All you tubers mention that you use the flue diameter that the smoke outlet is measured as, in this case 7 inches. I'm of the same opinion as my chimney flue size coming out of the ceiling is currently 7 inches and that would suit me just fine. But, I am non compliant with manufacturer, unless they made a printing error, or the north american model accomodates 7 inch flue size, and they did not make the changes on the plate nor manual, destined for Europe. Don't know. HELP! Don't know how to proceed in this case.