I'm somewhat new to wood burning so please forgive me if I don't use correct terminology. I'm putting a wood boiler in the basement and will be using an existing flue. The flue was built with a 12" square (terra cotta?, clay?) liner and also has a 9" square SS insert. Originally the flue was used for a wood stove that was on the first floor and it hasn't been used for about 20 years. I'll need to knock a hole through the block foundation wall to access from the basement.
I guess my first issue is, can I use the flue as is or would I be better off to use a 6" liner? The oulet of the boiler is 6". If I use as is, how should I seal off the outlet from the first floor. Currently its just blocked off with 2" thick insulation board. If I need a liner, I will probably go with 6" rigid.
Also, when I exit the basement through the block wall, how should that be sealed?
Any input would be appreciated.
Thanks, Rob.
I guess my first issue is, can I use the flue as is or would I be better off to use a 6" liner? The oulet of the boiler is 6". If I use as is, how should I seal off the outlet from the first floor. Currently its just blocked off with 2" thick insulation board. If I need a liner, I will probably go with 6" rigid.
Also, when I exit the basement through the block wall, how should that be sealed?
Any input would be appreciated.
Thanks, Rob.