? about stove pipe size

[pete97]

I have an older stove at camp that has an 8" pipe opening. My masonary chimney is 7"x7". Can I reduce the 8" pipe coming out of the stove to 6" since the opening in the chimney is 6"? Thanks Pete

 

[elkimmeg]

some older stoves had an 8" to 6" reduction allowance What does the manufacture's instructions tell you 6" to 8"reduction is almost 50% reduction. I know code does not allow any reduction from the flue collar unless tested and approved in the manufactur's listing manual. If you shop there are still some 8 to 7" reducers. Think about a 50% reduction before you enter the flue is not an ideal setup, beside being non code compliant

 

[pete97]

It is an older Kodiak Wood Stove with the 2 doors on the front. No info from the maker. No manuel on it either. The opening at the flue is 6". I have 8" up to there then reducedto 6".