unburnt coal in ash bin

Re: unburnt coal in ash bin

PostBy: Rick 386 On: Tue Dec 03, 2013 8:02 pm

First off, I would make sure that the combustion fan is blowing at 100% all the time.

To do that while it is doing its normal thing, unplug from the coaltrol and plug directly into an outlet via extension cord. If you notice any difference in the height of the flames, that should indicate the blower not at 100%. Or if you can hear any noticeable change in the speed of the blower. Try leaving it plugged directly into the outlet for a day and see if you notice any difference.

You mentioned that you cleaned the air holes but have you run a drill bit through them to make sure they are completely open ??


It MAY be that the combustion fan needs cleaning or oiling, or maybe it is getting tired.............



Rick
Rick 386
 
Stoker Coal Boiler: AA 260 heating both sides of twin farmhouse
Hot Air Coal Stoker Stove: LL Hyfire II w/ coaltrol in garage
Coal Size/Type: Pea in AA 260, Rice in LL Hyfire II
Other Heating: Gas fired infared at work

Re: unburnt coal in ash bin

PostBy: kbrindle On: Wed Dec 04, 2013 9:35 am

Thanks Rick I will try that out tonight. I hope the blower is not getting tired I only purchased it at the beginning of this heating season. I also did run a drill bit through the air holes as well.
kbrindle
 

Re: unburnt coal in ash bin

PostBy: WNY On: Wed Dec 04, 2013 1:23 pm

All of us have a certain amount of unburnt in the ash pan, that is typical. normally not very much

but do the combustion fan upgrade to full 100% of the time and it you may have to adjust your coal trol for feed rates (min/max) and it may burn better and less unburnt.
WNY
 
Hot Air Coal Stoker Stove: Keystoker 90K, Leisure Line Hyfire I
Coal Size/Type: Rice
Stove/Furnace Make: Keystoker, LL & CoalTrol
Stove/Furnace Model: 90K, Hyfire I, VF3000 Soon

Re: unburnt coal in ash bin

PostBy: nwaelder On: Wed Dec 04, 2013 11:05 pm

Very dark particles are not coal at all, they are junk in the coal. Coal burns from the outside-in and therefore ash forms on the outside surface and the unburned part, if any, may be found by breaking apart a lump of ash and examining it.
nwaelder
 

Re: unburnt coal in ash bin

PostBy: Wiz On: Thu Dec 05, 2013 8:09 am

nwaelder wrote:Very dark particles are not coal at all, they are junk in the coal. Coal burns from the outside-in and therefore ash forms on the outside surface and the unburned part, if any, may be found by breaking apart a lump of ash and examining it.

Excellent point over looked, if it's not coal somehow bypassing fire on grates.
Wiz
 
Stoker Coal Boiler: Keystoker Ka 6
Coal Size/Type: Casey Junk Coal :(

Re: unburnt coal in ash bin

PostBy: theo On: Thu Dec 05, 2013 5:02 pm

don't know if it is the same with the hard coal but were I,am at we uncovered soft coal and it has what they call black shell on the top of the coal, we use to have to "peel" it off the coal. a lot of times we could not get it all, that black stuff you see in your unburnt coal might be shale
theo
 
Stove/Furnace Make: LL
Stove/Furnace Model: Hyfire 2