Rotten Eggs

Re: Rotten Eggs

PostBy: heatwithcoal On: Sat. Dec. 28, 2013 12:09 pm

I am thinking that I will res-ize the thimble back down to 6" in the spring. I'd hate to spend the loot on a 6" baro and more stove pipe but I just checked and the ash it is building up again at the elbow where it exits the stove. What about going 6" up from furnace to an increaser to the 8" thimble? I wonder if the draft would be enough to carry the fly ash through the 8" thimble for a distance of about 10-12" (foundation wall) and then drop into the chimney clean-out. Then at least I would not have to re-size the thimble back down to 6".

Hot Air Coal Stoker Furnace: AK-110
Stove/Furnace Make: Leisure Line
Stove/Furnace Model: AK-110

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Re: Rotten Eggs

PostBy: Pacowy On: Sat. Dec. 28, 2013 1:11 pm

Unless LL has any concerns, I think the easiest and least expensive "fix" would be to transition from 6" to 8" at the smoke pipe flange and replace the troublesome elbow with an 8" tee as described. Even if you replace everything with 6" you're likely to get a fair amount of fly ash accumulation in the pipe, and a lot of it will accumulate where the pipe turns to go "uphill"; it won't all go through the thimble.

Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite