Funny sound

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Dec 17, 2009
48
Mid-Michigan
I recently, 6 weeks ago had installed a chimney with my Hearthstone stove. The stove runs 24/7 and we mostly run elm. In the last few days I've heard what sounds like something fall down the chimney, everything is still attached up top. I run flue temps of 400-600 measured with a probe about 30" above stove. I think this is creosote falling off the interior of the chimneys wall but thought I would ask the professionals.
 
It could be creosote, the only way to be completely sure is to open it up and take a look inside. Can you get to the top or use a mirror to see up from the bottom?

Matt
 
dwaynecornhauler said:
I recently, 6 weeks ago had installed a chimney with my Hearthstone stove. The stove runs 24/7 and we mostly run elm. In the last few days I've heard what sounds like something fall down the chimney, everything is still attached up top. I run flue temps of 400-600 measured with a probe about 30" above stove. I think this is creosote falling off the interior of the chimneys wall but thought I would ask the professionals.

That sounds right flakes of creosote falling down. It sounds like you are not burning hot enough,could be wet wood,not enough air.Are your secondarys throwing good flames when it is heated up?
 
I agree. Clean the chimney and start burning a bit hotter fires. Don't forget either Dwayne that the fuel you have has much to do with this situation. Good luck.
 
dwaynecornhauler said:
I recently, 6 weeks ago had installed a chimney with my Hearthstone stove. The stove runs 24/7 and we mostly run elm. In the last few days I've heard what sounds like something fall down the chimney, everything is still attached up top. I run flue temps of 400-600 measured with a probe about 30" above stove. I think this is creosote falling off the interior of the chimneys wall but thought I would ask the professionals.

400 degrees is right on the cusp of being too low . . . and generally these temps are measured by thermometers placed 18 inches from the stove collar where it is hotter . . . quite a bit hotter than 30 inches away from the stove collar.

And falling creosote could sound like corn flakes being dropped down your chimney or you may hear chunks of it falling off . . . probably not a bad idea to have the chimney swept at this point.
 
I figured with my probe placed further up the flue than 18 inches and it still reading 400 I would be running hotter than 400 at 18 inches. I think the problem is as with most first year burners is the stove was purchased without thought of having wood properly dried and just burning what we think is dry wood only to have it be semi dry. I figure I have only 4 more weeks and then she will be shut down for the summer and she will get a good cleaning.
 
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