Unburned Coal...I Know...
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- Joined: Sun. Oct. 14, 2012 7:47 pm
- Location: central ny
hi guys. ive searched and tried every suggestions I dare to try myself with this unburned coal issue. some backround: 2yr old koker 160 w direct vent tied into home ducts and cold air returns. ive been burning blacshak for two seasons and am convinced im not burning near what it should be. two people said it look like junk coal or unburned coal. I first called keystoker and got as far as them telling me to turn the white feeder screw to all the way clockwise(more coal) then to four turns counter-clockwise. this didn't do a whole lot as I was already at 6 turns. then I ran 400 lbs of jetson coal through it and the results seemed the same. then I shut down and cleaned everything as im in the middle of burning season anyways and that didn't help either. my draft is never too high or too low but between .02 and .05 depending on weather. ive been as far out as 8 turns and that didn't seem to do anything either, as far as the unburned coal issue. ive posted pics please let me know if theres something im missing. btw I have no issues heating the house whatsoever, the koker is a beast!
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- Carbon12
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- Posts: 2226
- Joined: Tue. Oct. 11, 2011 6:53 pm
- Location: Harrisburg, PA
- Stoker Coal Boiler: Keystoker KA-6
- Coal Size/Type: Rice/Anthracite
- Other Heating: Heat Pump/Forced Hot Air Oil Furnace
Ash looks much like mine from my keystoker KA6 boiler. How much coal have you been going through?
- tsb
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- Location: Douglassville, Pa
- Stoker Coal Boiler: Binford 2000
- Hot Air Coal Stoker Stove: LL Pioneer top vent
- Hand Fed Coal Stove: Saey Hanover II
- Baseburners & Antiques: Grander Golden Oak , Glenwood # 6
- Coal Size/Type: All of them
Your ash pictures are about right for coal that sucks.
Really good coal has about half that amount of unburned coal.
There will always be unburned coal. It's just a matter of how much.
Really good coal has about half that amount of unburned coal.
There will always be unburned coal. It's just a matter of how much.
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- Location: central ny
id say 50lbs per 24 hrs when it was below zero for that spell in ny, around 40 per 24hrs when is 20's during the day. although I am on target to match last years consumption. logic tells me I burning "rich" either decrease coal or increase combustion air right? ive decreased coal feed to no avail but not sure how to mess with the sacred combustion fan blocking plate. if I move the plate to more open how do I adjust my direct vent?
- Carbon12
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- Joined: Tue. Oct. 11, 2011 6:53 pm
- Location: Harrisburg, PA
- Stoker Coal Boiler: Keystoker KA-6
- Coal Size/Type: Rice/Anthracite
- Other Heating: Heat Pump/Forced Hot Air Oil Furnace
Coal consumption does not seem excessive. I have no experience with direct vents. More combustion air might do the trick. Someone more familiar will chime in shortly, I'm sure.
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the jetson coal I tried worked wonders in my buddies hyfax 2. he said "theres less shale in the ash pan and It burned hotter so I could turn the heat down to get the same temp as the other stuff(brand x)". this just didn't seem to do much for my koker.
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carbon, no I did not as did this before the season. none looked closed so I just vacuumed the grate. thanks
- Lightning
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- Joined: Wed. Nov. 16, 2011 9:51 am
- Location: Olean, NY
- Stoker Coal Boiler: Modified AA 130
- Coal Size/Type: Pea Size - Anthracite
Correct me if I'm wrong but I would think that there is a delicate balance between enough combustion air and too much combustion air that would help burn more of the coal, but also be counter productive since that extra air if excessive , would carry heat out the chimney before the stove could absorb most of it.
How's that for a run on sentence!!!
How's that for a run on sentence!!!
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- Location: central ny
lightning you read that right. is that crazy talk or what. im at a loss.
- Lightning
- Site Moderator
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- Joined: Wed. Nov. 16, 2011 9:51 am
- Location: Olean, NY
- Stoker Coal Boiler: Modified AA 130
- Coal Size/Type: Pea Size - Anthracite
I should a known lol.. I'm kinda thick sometimes.Carbon12 wrote:He did. I was just messing with ya!
Crazy talk? By me? No. I was being serious.
- Carbon12
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- Posts: 2226
- Joined: Tue. Oct. 11, 2011 6:53 pm
- Location: Harrisburg, PA
- Stoker Coal Boiler: Keystoker KA-6
- Coal Size/Type: Rice/Anthracite
- Other Heating: Heat Pump/Forced Hot Air Oil Furnace
Sorry if I went off topic. Many of us have been embroiled in the MPD vs. Baro battle all season. It was a lame attempt at humor. My bad,.....as they say