so begreen are you saying if you close down the dampner after start up it wont ease down and stay around 3-400 deg?when bed time what do ya do to turn down for the long burn without getting to hot? its really hard finding a good used stove within 200 miles from where I live, kinda remote in U.P. MICHIGAN
Stovelark, thanks, your description of TN20 is just what I"m after, just hoping it can be tamed down enough to not be TOO hot or TOO cold, this site should allow me to get it right, just finding good seasoned wood in my area is the hardest part tho, thanks again
there begreen, just a early update on TN-20, so its 6-27-16, cooler day today here was 56 w/clouds and some wind so opened doors and let house cool down to about 61, started first fire in stove-was easy getting a small fire started, enough to have some coals, top gets to 300-400 quite easy, with a couple small splits throwed in she held about 375-400 for about 1.5-2.0hrs, then thru in 1 decent size split and shut her down for bed, woke up 6 hrs later and top was still 200deg, wow if it was loaded it will be great overnight burn time, at about 400 you can see secondary tubes burning like it advertises, with dampner slightly opened has great view of fire with clean glass, I looked for anything undesireable and really didnt see anything except a real decent stove, I would sure say they did this stove right, my only concern is my ceiling plate around pipeing going thru ceiling seemed kinda hot to touch, dont know whats to hot for saftey there, will use a Infared gun this fall on it-pipeing is 6" to 8"
Glad you are having success with the new stove! Pics of your set-up might help troubleshoot the pipe temp ...
begreen here is pics of pipeing, like I said ceiling rim at ceiling seemed kinda hot but could hold hand on it without burning hand while stove top was 400deg,
so your saying the whole in ceiling needs to be 2" gap between pipe wall and ceiling all the way around pipe? its probably only1" gap know
so does chimney pipe (brand) make the exceptions-mine is about 1 1/8" gap around pipe, has a wood 2by on 2 sides that would not allow to open whole up a little without major ordeal? do I need to get on roof to tell you chimney brand?
begreen just got a pic of my pipeing (brand) to answer your question of brand and clearense , I sure hope this pipe is 1" because its been that way for many years with that old stove that would get as hot as one can get, please let me now.
Begreen thanks so much, I just dont now if I should tear this all apart or not, like I said earlier its been used this way for years and I dont think its burned down yet, and should be burning a little cooler-since the old stove was very hot running (no adjustability), you say 5" Metalbestos-mine is 8".
I didn't mention pipe size. Is this 6" or 8" chimney - ID? If 8", maybe now is the time to replace with 6" chimney pipe? That will bring clearances into line. 
