Changing liner size?

Changing liner size?

PostBy: Keepaeyeonit On: Tue Oct 30, 2012 8:55 pm

Hi all, hope your summer was good. I need some input on maybe replacing my clay liners in the chimney(not this year but maybe in the spring),I replaced the 12" liners and added 2' to the height when I switch to coal due to the fact most were cracked from a fire(previous owner and his wood stove),the chimney has a great draft in colder weather but on the warmer days not so good so my plan was to remove the 12"SQ and replace with 8" round and fill the air space with vermiculite hoping this would be better but I'm not sure what to do at the start of the first liner(at the top of the smoke chamber)the old one I broke out was not sitting on a shelf just the first 10" of liner was secured with mortar(between the brick and the liner),I mortared the whole 24" liner when I replaced it now if I were to put in the 8" liners do I remove the old 12" liner and install the 8" the same way, mortar the round into the square or get a 1" or 2" thick pc of stainless(with a 8.5" bore and blocks Tig welded to keep the round center over the bore) to sit on the top of the square liner and build from there? now this is a insert in a brick fireplace and I do use a pipe from the stove up in to the first liner with baro in it, I will change the pipe to a double wall smooth bore(the pipe I got is a P.O.S and will never buy that kind again) but I am just looking for some feedback right now,Thanks and have a good one. Keepaeyeonit :)
Keepaeyeonit
 
Hand Fed Coal Stove: Hitzer 983 insert
Baseburners & Antiques: Glenwood #8
Coal Size/Type: Coal Contractors Mammoth nut, Direnzo nut, Lehigh stove
Other Heating: 45 year old oil furnace,and a crappy 24 year old heat pump


Re: Changing liner size?

PostBy: McGiever On: Wed Oct 31, 2012 4:57 am

Is this an exterior chimney or interior?

Different solutions for each, Me thinks. ;)
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Coal Size/Type: PEA / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: Changing liner size?

PostBy: Keepaeyeonit On: Wed Oct 31, 2012 6:02 am

Sorry,It's on a East wall and It's a exterior chimney.Keepaeyeonit
Keepaeyeonit
 
Hand Fed Coal Stove: Hitzer 983 insert
Baseburners & Antiques: Glenwood #8
Coal Size/Type: Coal Contractors Mammoth nut, Direnzo nut, Lehigh stove
Other Heating: 45 year old oil furnace,and a crappy 24 year old heat pump