smoke leaking out of chimney

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jason canez

New Member
Hearth Supporter
May 25, 2008
6
northeast
Just started up my biomax for the first time and got loads of smoke coming out what appeared to be the chimney seems. in the class b . They put class b in due to tight space up untill it goes through the roof then went to class a . I noticed there was no refractory cement used however which is what the manufacfturer recommends. do the seems get joined with the stuff incuding seems in elbows? Anyone familiar with this?
 
auggie said:
Just started up my biomax for the first time and got loads of smoke coming out what appeared to be the chimney seems. in the class b . They put class b in due to tight space up untill it goes through the roof then went to class a . I noticed there was no refractory cement used however which is what the manufacfturer recommends. do the seems get joined with the stuff incuding seems in elbows? Anyone familiar with this?

I ran into a similar problem last year and it was caused by a poor draft due to a restriction in the chimney caused by creosote...

Ray
 
just started my biomax up and had same problem. mine is black stove pipe into double wall class A. i think since it is a forced draft setup this is why we have more leaks from the stove pipe. i sealed it up with high heat DAP mortar stuff form lowes and all is well no more smoke leaking. this is my second day burning and wow what a difference in performance of the boimax lots more heat.
 
Is that like a caulk? Did you take apart the black pipe and put it in the seems or just put it on the seems without taking apart?
 
yes like a caulk. made by DAP says its a mortar on the tube good to 2000 degree but i doubt it. its been doing well so far.
 
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