I'm getting ready to put a fisher woodstove in,it has a 8'' outlet . I was wondering if you can reduce it down to 6''?
fisher woodstove
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If it is not ul; labeled then the flue outlet does not make any difference, it can't be legally installed.
Fleu collar reduction can not be made unles the stove was listed and tested for the reduction
Fleu collar reduction can not be made unles the stove was listed and tested for the reduction
Corie
Minister of Fire
You probably CAN, but it will hurt performance and be against code. I'd advise against it unless the circumstances are EXTREMELY extenuating. You'd be better suited selling the fisher unit and replacing it with a higher quality UL listed unit like those that can be bought at home depot, lowes, tractor supply, northern tool, etc. The price for a NEW UL listed, EPA certified unit will probably be almost equal to what someone is willing to pay for that old doubled doored, smoke belching giant of a stove.
I have an old Fisher Mama Bear that I use in the shop on ocassion. I would not put this thing in my house period. It eats wood faster than termites and pukes smoke. My plan is to turn it into a fire box for a smoker. Spend a few bucks on an Englander from HD and it will pay for itself in wood cost.
log-on
New Member
My Mama bear came with a 6" flue output and it's worked fine for 20 years. Yes it's not up to modern standards and you might not want to install it if you are worried about codes etc. If you are short of cash, have a good supply of dry wood and are willing to monitor the build up in your flue and need to stay warm then I believe the 6" flue will work fine.
thechimneysweep
Minister of Fire
Careful there, logon:
Fisher made three different sizes of woodstove. If the OP's stove has an 8" flue collar, it's a Papa Bear and that's the size pipe he needs to use. The cross-sectional area of an 8" flue collar is 50 sq.in. The cross-sectional area of the 6" pipe you just recommended he use is 28 sq.in., or just over half the size. That setup would almost certainly cause poor performance, along with back-smoking into the room every time the stove door was opened.
Fisher made three different sizes of woodstove. If the OP's stove has an 8" flue collar, it's a Papa Bear and that's the size pipe he needs to use. The cross-sectional area of an 8" flue collar is 50 sq.in. The cross-sectional area of the 6" pipe you just recommended he use is 28 sq.in., or just over half the size. That setup would almost certainly cause poor performance, along with back-smoking into the room every time the stove door was opened.
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