chimney questions

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zabman

New Member
Hearth Supporter
Dec 10, 2008
8
NW Ohio
hello. i am quite new to the whole wood burning thing. i have been reading on this site for a few nights now and have learned quite a bit from making sure that the wood is dry, storage of wood to stove temps. anyway my situation...

i have acquired a free, used, wood stove about two years ago. pays to be affiliated with a home remodeling construction crew. anyway, it is an old blaze king KEJ from back in '83. the flue opening is 8" on the top of the stove. we have been pricing up the flue and have noticed that the 8" double wall is more expensive than the 6" double wall. i was wondering if it ok to reduce the size of the 8" to 6" to save some money. the flue has to go up out of the stove, elbow threw the block wall underground and up the side of the house 24 feet. i have asked a few wood stove/fireplace dealers in the area and some say it is ok to reduce it right off the stove and others say it is not ok and keep it 8" all the way up. any and all advice on the topic is appreciated.
 
Most stove manufacturers say it's okay to go bigger, but not smaller. No specific knowledge of the blaze king. However, most heating appliances, be they wood, oil, pellet, natural gas, or cow flaps, are built to produce a maximum BTU level. That level calls for a flu of a specific size. Can't make good heat or burn efficiently if it can't exhaust the waste.
 
From the original manual...

(broken link removed to http://www.blazeking.com/Manuals/Out) of Production OM/KEJ-1101 & PEJ-1002.pdf

It states... "NEVER use a chimney or chimney connector smaller than the 8" stove exhaust."

They capitalized never so I think they mean it.
 
hey thanks guys. i was under the impression (being an engine guy) that smaller pipe, higher velosity, less creosote, stuff like that. glad i asked and thanks for the replies
 
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