Retro of a Allen Stoker

Stoker Coal Boilers automatically feed the coal and have controls and pumps just like any conventions boiler. They are intended to be used as a primary heat and often have domestic hot water coils as an added bonus. They can be set up independently or in dual sytem with your existing oil/gas boiler. They can accommodate both hot water base board or steam plumbing.
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ryan20strohl
Member
Posts: 118
Joined: Tue. Jul. 03, 2012 10:00 pm
Stoker Coal Boiler: efm stoker and allen stoker
Coal Size/Type: rice and buck
Other Heating: allen stoker
Stove/Furnace Make: EFM
Stove/Furnace Model: 520

Post Thu. Jan. 30, 2014 5:33 pm

20140117_171849.jpg
I put a refinished s 20 stoker mech in my Allen stoker
Ryan Strohl

ryan20strohl
Member
Posts: 118
Joined: Tue. Jul. 03, 2012 10:00 pm
Stoker Coal Boiler: efm stoker and allen stoker
Coal Size/Type: rice and buck
Other Heating: allen stoker
Stove/Furnace Make: EFM
Stove/Furnace Model: 520

Post Thu. Jan. 30, 2014 5:34 pm

I put a refurbished efm stoker mech in my Allen stoker the boiler has a new flange and domestic coil
Ryan Strohl

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Berlin
Site Moderator
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 Thu. Jan. 30, 2014 5:38 pm

ryan20strohl wrote:I put a refurbished efm stoker mech in my Allen stoker the boiler has a new flange and domestic coil
interesting, but why?
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.

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ryan20strohl
Member
Posts: 118
Joined: Tue. Jul. 03, 2012 10:00 pm
Stoker Coal Boiler: efm stoker and allen stoker
Coal Size/Type: rice and buck
Other Heating: allen stoker
Stove/Furnace Make: EFM
Stove/Furnace Model: 520

Post Thu. Jan. 30, 2014 5:44 pm

Allen burned buck it seemed like it was using a lot to heat 900 Sq of a garage so I bought a stoker mech and converted the Allen to a 520 basically the coil is the newer style 520 one was a fun project and I have more of a range to control with the Allen worked great I have a refurbished Allen stoker and bigger pot with a 16 inch ash ring if anyone interest
Ryan Strohl

User avatar
Berlin
Site Moderator
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 Thu. Jan. 30, 2014 6:01 pm

Do you think the allen stoker design isn't as efficient as an efm 520? I've been thinking the allen loses air around the fire through the top ring; the steep retort that opens abruptly at the top leads me to think that I'm getting too much excess air in the firebox. I might further modify the one I installed to burn bit for the folks to see if I can improve efficiency. I do like the blower design on the efm's.
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.

ryan20strohl
Member
Posts: 118
Joined: Tue. Jul. 03, 2012 10:00 pm
Stoker Coal Boiler: efm stoker and allen stoker
Coal Size/Type: rice and buck
Other Heating: allen stoker
Stove/Furnace Make: EFM
Stove/Furnace Model: 520

Post Thu. Jan. 30, 2014 6:19 pm

Efm has a very good design not so Allen is bad just have more control and can burn rice also I Dn't like the pressure tub going to the worm tub I was also getting a real bad smell in the bucket
Ryan Strohl

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