Big Old Combustioneer Running Again!

Stoker coal boilers and hot air furnaces and stoves using bituminous coal to heat your home or business. A stoker automatically feeds coal and combustion air
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Willis
Member
Posts: 109
Joined: Tue. Aug. 26, 2008 7:36 am
Hot Air Coal Stoker Furnace: Combustioneer 24 FA w/ Will-Burt s-30
Hot Air Coal Stoker Stove: Combustioneer 77, Stokermatic
Hand Fed Coal Stove: Warm Morning 520,521
Coal Size/Type: Washed stoker- Bituminous
Location: Cadiz, OH

Post Thu. Jan. 05, 2012 10:01 pm

Finally got the big combustioneer up and running. Will post some pics soon. Need to run some more pipe to existing duct work but have a couple 8 in tied in and it is pumping heat into the house. Does anyone have a good way to tweak the feed and air ratios?
In the heart of Eastern Ohio coal country. Warm Morning 520, 521- Will-Burt Model 30 Stoker in Combustioneer Model 24FA Furnace
Mining Coal , Selling Coal, Burning Coal....Wow I love Coal!!!

User avatar
Willis
Member
Posts: 109
Joined: Tue. Aug. 26, 2008 7:36 am
Hot Air Coal Stoker Furnace: Combustioneer 24 FA w/ Will-Burt s-30
Hot Air Coal Stoker Stove: Combustioneer 77, Stokermatic
Hand Fed Coal Stove: Warm Morning 520,521
Coal Size/Type: Washed stoker- Bituminous
Location: Cadiz, OH

Post Thu. Jan. 05, 2012 10:05 pm

Still have some details to finish.
Attachments
IMAG0215.jpg
In the heart of Eastern Ohio coal country. Warm Morning 520, 521- Will-Burt Model 30 Stoker in Combustioneer Model 24FA Furnace
Mining Coal , Selling Coal, Burning Coal....Wow I love Coal!!!

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McGiever
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Posts: 5997
Joined: Sun. May. 02, 2010 11:26 pm
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Coal Size/Type: PEA / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek
Location: Junction of PA-OH-WV

Post Thu. Jan. 05, 2012 10:21 pm

Goodness Gracious...that things a "beast" :jawdrop:

What model is that?
How many btu/hr?
SLOW AND STEADY WINS THE RACE

User avatar
Willis
Member
Posts: 109
Joined: Tue. Aug. 26, 2008 7:36 am
Hot Air Coal Stoker Furnace: Combustioneer 24 FA w/ Will-Burt s-30
Hot Air Coal Stoker Stove: Combustioneer 77, Stokermatic
Hand Fed Coal Stove: Warm Morning 520,521
Coal Size/Type: Washed stoker- Bituminous
Location: Cadiz, OH

Post Thu. Jan. 05, 2012 10:29 pm

Combustioneer model 24 FA. 156,000 BTU according to the spec sheet but that was 20 lb/ hour with 12,000 BTU coal. I'm burning 13,500 coal so I'm sure I could get a little more out of her. Have my thermostat on 77 now, partly because I can but mostly out of spite to my wife who is always complaining it is cold!
In the heart of Eastern Ohio coal country. Warm Morning 520, 521- Will-Burt Model 30 Stoker in Combustioneer Model 24FA Furnace
Mining Coal , Selling Coal, Burning Coal....Wow I love Coal!!!


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rockwood
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Posts: 1371
Joined: Sun. Sep. 21, 2008 7:37 pm
Hot Air Coal Stoker Furnace: Stokermatic coal furnace
Hand Fed Coal Stove: Rockwood Stoveworks Circulator
Baseburners & Antiques: Malleable/Monarch Range
Coal Size/Type: Soft coal: Lump and stoker (slack coal)
Location: Utah

Post Thu. Jan. 05, 2012 11:30 pm

Now that's a coal furnace 8-)
Did you paint those red parts? I don't remember them being that color.
I need to find photos of the big stokermatic furnaces and post them. They are red with black firebox door and look really cool.

As far as air and feed, it depends on the coal and chimney draft so adjustments will need to be made over a day or two.
I would recommend settings that keep a bed of coals heaped up to about 5 inches above the top of the tuyers and not producing smoke when the stoker is running. A coal bed more than about five inches with smoky fire would mean too little air or too much coal and a shallow coal bed burning very bright with lots of sparks indicates too much air or not enough coal.....but again it depends on the characteristics of the coal.
Clinkers should develop around the outside edges of the burning coal.

I'm sure Berlin will have some more pointers for you.
"None are more hopelessly enslaved than those who falsely believe they are free." -Goethe

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Berlin
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Posts: 1847
Joined: Thu. Feb. 09, 2006 1:25 pm
Hot Air Coal Stoker Furnace: Will-Burt Combustioneer 77B
Coal Size/Type: Ohio BITUMINOUS pea stoker coal
Location: Buffalo/Adirondacks, NY

Post Fri. Jan. 06, 2012 12:17 am

One of the biggest issues with these furnaces (and unfortunately common to combustioneer stoves as well) is cracking of the heat exchanger, once these cracks develop, it's very hard to keep them closed even after properly welding them or welding a plate over them because of where the stresses have been concentrated in the steel. I'm mentioning this first because they are preventable - if you don't have any, you'll want to make sure it stays that way. First the fan/limit control: set the limit at 160, close @ 110 and open @ 90. Next, you need more airflow! if it keeps hitting the limit either the blower is running too slow (larger pully needed on motor) or your ducts are way too small. Running two or even four eight inch ducts isn't adequate.

As far as adjusting the fire, you want to make sure of a few things: the clinker forms outside the firepot. the fire should be bright and NOT produce any smoke while running. as rockwood said, you want the fuel bed to be burning a bit above the tuyeres (extended idle times will reduce it's depth, but that's ok). You will achieve this by allowing loose ash to accumulate and by adjusting the air so that the fuel bed reaches an equilibrium (where fuel burned matches fuel introduced) at around 3-8" above the tuyeres (once again, the higher the coking tendency, the deeper the bed will need to be and the deeper the loose ash will neeed to be). You need to set your baro to between -.03 or -.04. you must have a baro (if you don't it will burn back into the worm and ruin it and the tuyeres). excessive air will also ruin the worm and the tuyeres quickly. If the clinker is forming as chunks in the firebox or as a ring outside the tuyeres, you are ok, if the clinker is forming in the tuyeres and you have a narrow column of flame shooting out of the center of the tuyeres (think raiders of the lost ark) you have too much air and the fire is burning down into the tuyeres. Some sparks are inevitable, but if it looks like a firework, you need to either increase the feed or (because these furnaces/stokers are underrated) more likely simply reduce the air. It takes some time for the stoker to visibly respond to changes either in feed or air; it may take a couple of hours or a day depending on load/runtime. The stoker will NOT behave predictably until the NECESSARY amount of loose ash has accumulated in the firebox - depending on the coking tendency of the coal it could be from 3 - 8" before the fire behaves consistently. Only remove the clinker ! Do not remove loose ash unless it becomes excessive or the weather is so mild that the stoker doesn't run long enough to produce a clinker - and then only take out what's necessary.

I'm sure there's a lot more but it's been a long day. Once you get it where you think you need it post some pics and we can critique your stoker fire :D
Burning western Pennsylvania Bituminous in WNY using model 77 stoker furnace. BITUMINOUS equiptment: 2 hand fired stoves of my own design, Many Combustioneer Model 77 stokers, stokermatic furnace, Many Will-Burt stokers, & and Two Iron firemen.

User avatar
Willis
Member
Posts: 109
Joined: Tue. Aug. 26, 2008 7:36 am
Hot Air Coal Stoker Furnace: Combustioneer 24 FA w/ Will-Burt s-30
Hot Air Coal Stoker Stove: Combustioneer 77, Stokermatic
Hand Fed Coal Stove: Warm Morning 520,521
Coal Size/Type: Washed stoker- Bituminous
Location: Cadiz, OH

Post Fri. Jan. 06, 2012 11:59 pm

Finally have some clinkers, nice large ones forming in a ring around the tuyeres. My only concern is I am getting some coke trees, not huge ones but they are there. I don't have a manometer but set the air according to stoker instructions. I'm sure there still is some tweeking to be done. Need to find a new micro switch for my holdfire timer as it doesn't always come on during the holdfire cycle. So far so good though, sure beats hand firing anyday of the week.
Attachments
IMAG0218.jpg
In the heart of Eastern Ohio coal country. Warm Morning 520, 521- Will-Burt Model 30 Stoker in Combustioneer Model 24FA Furnace
Mining Coal , Selling Coal, Burning Coal....Wow I love Coal!!!

User avatar
McGiever
Member
Posts: 5997
Joined: Sun. May. 02, 2010 11:26 pm
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Coal Size/Type: PEA / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek
Location: Junction of PA-OH-WV

Post Sat. Jan. 07, 2012 12:10 am

Willis,

Is that a Wil-Burt Timer?
If you could post a picture of that micro switch for the hold fire timer, I just may have something that could work. :)

McGiever
SLOW AND STEADY WINS THE RACE


User avatar
Willis
Member
Posts: 109
Joined: Tue. Aug. 26, 2008 7:36 am
Hot Air Coal Stoker Furnace: Combustioneer 24 FA w/ Will-Burt s-30
Hot Air Coal Stoker Stove: Combustioneer 77, Stokermatic
Hand Fed Coal Stove: Warm Morning 520,521
Coal Size/Type: Washed stoker- Bituminous
Location: Cadiz, OH

Post Sat. Jan. 07, 2012 12:30 am

Here it is, unimax 2tmt52-4.
Attachments
IMAG0223.jpg
In the heart of Eastern Ohio coal country. Warm Morning 520, 521- Will-Burt Model 30 Stoker in Combustioneer Model 24FA Furnace
Mining Coal , Selling Coal, Burning Coal....Wow I love Coal!!!

User avatar
rockwood
Member
Posts: 1371
Joined: Sun. Sep. 21, 2008 7:37 pm
Hot Air Coal Stoker Furnace: Stokermatic coal furnace
Hand Fed Coal Stove: Rockwood Stoveworks Circulator
Baseburners & Antiques: Malleable/Monarch Range
Coal Size/Type: Soft coal: Lump and stoker (slack coal)
Location: Utah

Post Sat. Jan. 07, 2012 1:25 am

Willis wrote:Finally have some clinkers, nice large ones forming in a ring around the tuyeres. My only concern is I am getting some coke trees, not huge ones but they are there. I don't have a manometer but set the air according to stoker instructions. I'm sure there still is some tweeking to be done. Need to find a new micro switch for my holdfire timer as it doesn't always come on during the holdfire cycle. So far so good though, sure beats hand firing anyday of the week.
Sounds like you're getting it dialed in. :)
The coal out here doesn't make coke trees so I don't have any experience with those but If they're not getting big enough to fall outside the fire where they won't burn then I wouldn't worry about it.
A manometer would be for setting the baro damper not for stoker settings and I agree with Berlin that a baro damper should be used.
A switch should be easy to find and I don't think you'll lose the fire this time of year anyway unless there's no call for heat for an extended period of time.
"None are more hopelessly enslaved than those who falsely believe they are free." -Goethe

User avatar
McGiever
Member
Posts: 5997
Joined: Sun. May. 02, 2010 11:26 pm
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Coal Size/Type: PEA / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek
Location: Junction of PA-OH-WV

Post Sat. Jan. 07, 2012 1:50 pm

Willis wrote:Here it is, unimax 2tmt52-4.
Think you could make this work?
DSCF2010.JPG
This looks exact for mounting.
DSCF2014.JPG
Willis, Let me know if you want either or both...I'll drop in the mail to you if you want.
The first pictured one is new, second is a used one scavenged from something. :)
SLOW AND STEADY WINS THE RACE

User avatar
Willis
Member
Posts: 109
Joined: Tue. Aug. 26, 2008 7:36 am
Hot Air Coal Stoker Furnace: Combustioneer 24 FA w/ Will-Burt s-30
Hot Air Coal Stoker Stove: Combustioneer 77, Stokermatic
Hand Fed Coal Stove: Warm Morning 520,521
Coal Size/Type: Washed stoker- Bituminous
Location: Cadiz, OH

Post Mon. Jan. 09, 2012 2:52 pm

Thanks, but I called Willburt today and ordered the right one , I'm tired or rigging things up after installing the furnace, only 12 dollars. Still getting coke trees though and have adjusted the air every which way. Not a huge deal just hit them with poker when I check fire.
In the heart of Eastern Ohio coal country. Warm Morning 520, 521- Will-Burt Model 30 Stoker in Combustioneer Model 24FA Furnace
Mining Coal , Selling Coal, Burning Coal....Wow I love Coal!!!

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