Burning Bitumious Lump Coal in a 1557M Hotblast

Hand fed coal boilers and furnaces using bituminous coal to heat your home or business. Hand fed stoves as the name implies require manual feeding and air adjustments.
Jared43758
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Posts: 253
Joined: Wed. Apr. 16, 2014 8:40 pm
Hand Fed Coal Stove: Hotblast 1557
Coal Size/Type: Run of the mine

Post Mon. Apr. 21, 2014 7:58 pm

Why would smoke escape the loading door if u have a good draft though? Are they expecting u to have a bad draft?


Jared43758
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Posts: 253
Joined: Wed. Apr. 16, 2014 8:40 pm
Hand Fed Coal Stove: Hotblast 1557
Coal Size/Type: Run of the mine

Post Mon. Apr. 21, 2014 8:17 pm

Does coal make a lot of ash? Like a lot more than wood?

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Lightning
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Posts: 8306
Joined: Wed. Nov. 16, 2011 9:51 am
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
Location: Olean, NY

Post Mon. Apr. 21, 2014 8:43 pm

Jared43758 wrote:Why would smoke escape the loading door if u have a good draft though? Are they expecting u to have a bad draft?
Because of how the baffles are arranged in the fire box and because of the oversized loading door, a convection current forms inside when the load door is open. This convection current promotes smoke to escape out into the room. The steel smoke curtain diverts the smoke up and over the baffles so the chimney can draw it out.

I have a decent draft, but if I prop the steel smoke curtain up, smoke will still escape into the room instead of up the chimney...

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Lightning
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Posts: 8306
Joined: Wed. Nov. 16, 2011 9:51 am
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
Location: Olean, NY

Post Mon. Apr. 21, 2014 8:45 pm

Jared43758 wrote:Does coal make a lot of ash? Like a lot more than wood?
Wood generally produces 1 or 2 percent ash. Coal produces 10-12% which is roughly 10 times more. So yes, coal produces a lot more ash than wood.

Jared43758
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Posts: 253
Joined: Wed. Apr. 16, 2014 8:40 pm
Hand Fed Coal Stove: Hotblast 1557
Coal Size/Type: Run of the mine

Post Mon. Apr. 21, 2014 9:13 pm

That's good info. Thanks I took my smoke plate off along time ago cause it kept falling off in the fire when I was putting logs in. Maybe I should find a way to better secure. Burning wood I would only have a ash try full every few days. So with coal it sounds like I'll have maybe to pan fulls a day. How much coal roughly should I use a day? How many ton range a year? Best sizing to use?

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davidmcbeth3
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Coal Size/Type: nut/pea/anthra
Stove/Furnace Make: Hitzer
Stove/Furnace Model: 503

Post Tue. Apr. 22, 2014 2:01 am

Jared43758 wrote:When I burn wood I leave quite a bed of ashes because it seems like it holds more heat. When I'm burning coal I try and remove all ashes right? So the coal is right down by the shaker grate and grate is clear to let air through? Then try to not melt or warp my grate?
Remember, the ash acts as an insulator for your grates .. so a little is good.

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Lightning
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Joined: Wed. Nov. 16, 2011 9:51 am
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
Location: Olean, NY

Post Tue. Apr. 22, 2014 2:36 am

davidmcbeth3 wrote:Remember, the ash acts as an insulator for your grates .. so a little is good.
The grate on these units have a lot of solid surface area so it keeps some ash on its top side unintentionally anyways. As long as the ash pan is kept empty so primary combustion air can get thru without restriction, there shouldn't be an issue with over heating the grates.
Jared43758 wrote:How much coal roughly should I use a day? How many ton range a year? Best sizing to use?
I use 5-6 tons for 2400 sq ft house per year and range 30-80 pounds per day depending on how cold it is.. (30 pounds per day during mild spring and fall days, 80 pounds per day during below zero cold winter days). The general rule is 1 ton per 500 sq ft per year, but that's just a rough calculation. For bit coal, the big chunks are better, like tennis ball - softball size pieces.

Jared43758
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Posts: 253
Joined: Wed. Apr. 16, 2014 8:40 pm
Hand Fed Coal Stove: Hotblast 1557
Coal Size/Type: Run of the mine

Post Tue. Apr. 22, 2014 4:39 am

I have a bunch of it that is the size of a soccer ball and bigger


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carlherrnstein
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Hot Air Coal Stoker Stove: combustioneer model 77B
Coal Size/Type: pea stoker/Ohio bituminous
Location: Clarksburg, ohio

Post Tue. Apr. 22, 2014 9:55 am

That size is good, its very hard to estimate how much coal you will go through a winter. However depending on what species of wood you compare to your coal it could have almost twice as much heat than the wood.

The lady at oxford told me once that their coal runs around 12,500 BTU/lb. As a comparison white oak has about 6,190 BTU/lb.

As far a ash goes, a volume or weight comparison isn't really fair because there is so much more heat in coal. In my opinion a BTU comparison is more realistic.

Here is a example of my thinking these numbers are just to show a point. If you burn 100lbs of wood per day to keep your house 70*F and get 1.5lbs of ash. If you were burning coal might burn 60lbs of coal to keep your house at 70*F and get 6.6lbs of ash. There is more ash in coal however there is also more heat.
Now thank god for the media, for saving the day,
Putting it all into perspective in a responsible way

From the Offspring song "Stuff Is Messed Up"

Jared43758
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Posts: 253
Joined: Wed. Apr. 16, 2014 8:40 pm
Hand Fed Coal Stove: Hotblast 1557
Coal Size/Type: Run of the mine

Post Tue. Apr. 22, 2014 11:02 am

Hey thanks. Great big peices of coal won't hurt? Still burn hot? I kinda figured I'd have to bust it up to get any heat outta it. I also get my coal from Oxford. I'm guessing if I use the great big I should use straight big but mix it with a lot of other smaller chunks?

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carlherrnstein
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Posts: 970
Joined: Tue. Feb. 07, 2012 8:49 am
Hot Air Coal Stoker Stove: combustioneer model 77B
Coal Size/Type: pea stoker/Ohio bituminous
Location: Clarksburg, ohio

Post Tue. Apr. 22, 2014 12:15 pm

I no longer burn their coal because I got a stoker stove, but when I used a hand fired I would get coal from there. I used to hand pick pieces that are baseball to football size. Bigger isn't always better, you don't want two or three huge chunks in there because there isn't enough surface exposed and able to burn. However you also don't want the pieces to be so small that they interlock and choke the air flow.
Now thank god for the media, for saving the day,
Putting it all into perspective in a responsible way

From the Offspring song "Stuff Is Messed Up"

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Lightning
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Posts: 8306
Joined: Wed. Nov. 16, 2011 9:51 am
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
Location: Olean, NY

Post Tue. Apr. 22, 2014 4:55 pm

carlherrnstein wrote:Here is a example of my thinking these numbers are just to show a point. If you burn 100lbs of wood per day to keep your house 70*F and get 1.5lbs of ash. If you were burning coal might burn 60lbs of coal to keep your house at 70*F and get 6.6lbs of ash. There is more ash in coal however there is also more heat.
I agree this is a better view point.. Good thinking! :idea: :)
Jared43758 wrote: Great big peices of coal won't hurt? Still burn hot?
I wouldn't try to burn soccer ball size chunks. Softball to grapefruit size should be plenty big enough. Keep the sizes uniform. Nut size bit coal will melt and fuse together forming a big solid mass that needs to be broken up later in the burn to keep heat output good..

Also, I just looked up the diagram for your model and it appears to me that its exactly the same one I have. The only difference is the name.

Jared43758
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Posts: 253
Joined: Wed. Apr. 16, 2014 8:40 pm
Hand Fed Coal Stove: Hotblast 1557
Coal Size/Type: Run of the mine

Post Tue. Apr. 22, 2014 6:48 pm

O. When I bought mine they sold a Clayton beside mine but it was twice the capacity

Jared43758
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Posts: 253
Joined: Wed. Apr. 16, 2014 8:40 pm
Hand Fed Coal Stove: Hotblast 1557
Coal Size/Type: Run of the mine

Post Tue. Apr. 22, 2014 6:50 pm

Can u post some pics of yours and your setup. If yours is the same then it might help me out

Jared43758
Member
Posts: 253
Joined: Wed. Apr. 16, 2014 8:40 pm
Hand Fed Coal Stove: Hotblast 1557
Coal Size/Type: Run of the mine

Post Tue. Apr. 22, 2014 6:58 pm

My stove says 70 pound coal capacity


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