Keystoker A 150
- Rob R.
- Site Moderator
- Posts: 17980
- Joined: Fri. Dec. 28, 2007 4:26 pm
- Location: Chazy, NY
- Stoker Coal Boiler: EFM 520
- Hand Fed Coal Stove: Chubby Jr
A fair amount of unburned coal is normal when the stoker is just idling all the time. It should clear up when the furnace starts getting some heat calls. Another possibility is that your coal supply contains more "bone" than average, or the coal is just really hard.
- McGiever
- Member
- Posts: 10130
- Joined: Sun. May. 02, 2010 11:26 pm
- Location: Junction of PA-OH-WV
- Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
- Hand Fed Coal Boiler: BUCKET A DAY water heater
- Hand Fed Coal Stove: Warm Morning 414A
- Coal Size/Type: PEA,NUT,STOVE /ANTHRACITE
- Other Heating: Ground Source Heat Pump and some Solar
Fines accumulated under the grate will affect the air/burn pattern...pull the small blower off and w/ added smaller tube on shop vac, you can reach tube in and clean the fines all out.ltmdl90 wrote:How can I improve the burn of this furnace. to much unburnt coal for my taste.
Feed rate is not over feeding. I put the 2nd blower on it for when it is in idle mode. What about the main blower? Weak?
i am burning buckwheat.
Baro setting needs to be little higher to for buck size...near .05 in/H2O if you can get it???
- StokerDon
- Site Moderator
- Posts: 7486
- Joined: Mon. Nov. 11, 2013 11:17 am
- Location: PA, Southern York County!
- Stoker Coal Boiler: Gentleman Janitor GJ-5, Van Wert VA-600, Axeman Anderson130 X3.
- Hand Fed Coal Furnace: Harman SF3500 reduced down to 3 grates connected to its own plenum
- Coal Size/Type: Rice, Chestnut and whatever will fit through the door on the Harman
- Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood
That ash looks a lot like the ash I got when running Medium Buckwheat in my Yellow Flame. I couldn't reduce the air enough to get it to burn right.ltmdl90 wrote:Pic
On your Keystoker, I would try turning the air down and adjusting the feed rate accordingly. Or switch to Hard Rice coal. Is your Keystoker one that is set up for Buckwheat coal?
That ash pan looks mighty heavy!
Here's what mine looked like. -Don
- StokerDon
- Site Moderator
- Posts: 7486
- Joined: Mon. Nov. 11, 2013 11:17 am
- Location: PA, Southern York County!
- Stoker Coal Boiler: Gentleman Janitor GJ-5, Van Wert VA-600, Axeman Anderson130 X3.
- Hand Fed Coal Furnace: Harman SF3500 reduced down to 3 grates connected to its own plenum
- Coal Size/Type: Rice, Chestnut and whatever will fit through the door on the Harman
- Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood
To me that photo you have there looks like the rocks that are in there are burnt and fractured and not turned into ash. On my unit this was the result of the coal being fired at to high of a temperature. Reducing the air helped.ltmdl90 wrote:Would you think that trying to get more air rather than less?
I am going to try rice and see what happens.
Try it both ways, what have you got to loose? Just keep track of your settings so you know what worked and what didn't.
-Don