I have had puff backs when the gases ignite after i added too much coal and didn't keep a hot flame burning in the stove but his is different.
I got a full load that is red hot and lots of blue flames but getting flashes of ignition in the stove with a whooshing sound. Never seen this happen before.
The draft is 0.09 and the stove temp is 500. what gives?
flash burn in hot stove
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coaledsweat
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- Stoker Coal Boiler: Axeman Anderson 260M
- Coal Size/Type: Pea
Try banking the coal, that will minimize what you are experiencing.
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Lightning
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Oh yeah, that sounds to me like the mix of fuel/air mixture being too rich (volatile gases being the fuel) above the coal bed. I've seen this before. Adding more secondary combustion air will smooth it out.
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deepwoods
- Member
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- Hand Fed Coal Stove: Hitzer 50-93 & DS Machine Newstyle Champion
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- Other Heating: Ruud propane forced air system
I have a 50-93 freestanding Hitzer with a hopper. I always freshen the fire up before shaking down at approx. 12 hr. intervals. Depending on how hot I run it the hopper never requires over a full hod of coal and that's usually for nights like this @ 0 Deg.night I am presently having.
After shake & refill I keep the front ash door air inlets wide open until the "blue Ladies" are dancing across the full width of the coal bed, then gradually reduce the front air inlets to about "half moon" or 90% closed and let the bimetal take control on the air inlet in the rear. Right now my manometer is @ .04 with the mpd set at a little over 45 Deg tilt. The bimetal regulator is set at nearly half open. Are all your gaskets in good condition? Air leaks can cause a coal stove to act erratically. Just my 2c.
After shake & refill I keep the front ash door air inlets wide open until the "blue Ladies" are dancing across the full width of the coal bed, then gradually reduce the front air inlets to about "half moon" or 90% closed and let the bimetal take control on the air inlet in the rear. Right now my manometer is @ .04 with the mpd set at a little over 45 Deg tilt. The bimetal regulator is set at nearly half open. Are all your gaskets in good condition? Air leaks can cause a coal stove to act erratically. Just my 2c.
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Ctyankee
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- Hand Fed Coal Stove: Hitzer 503 insert
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I got a hopper is it difficult to bank the coal but i did try opening the secondary air and either that worked. I guess the fire was so hot that it was burning off volatile gases faster than normal and the O2 was being used up before it got to the top of the pile.
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rberq
- Member
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- Location: Central Maine
- Hand Fed Coal Stove: DS Machine 1300 with hopper
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- Other Heating: Oil hot water radiators (fuel oil); propane
That sounds like a correct diagnosis. I wish I had adjustable secondary air.Ctyankee wrote: ↑Thu. Dec. 28, 2017 7:33 pmI got a hopper is it difficult to bank the coal but i did try opening the secondary air and either that worked. I guess the fire was so hot that it was burning off volatile gases faster than normal and the O2 was being used up before it got to the top of the pile.
