Marathon Tri-Fuel Furnace Coal Burning Blues

A Coal stoker furnace or stove controls most operations including automatically feeding the coal. They are quite similar to any conventional oil and gas units and easily operated for extended periods of time. They commonly use rice coal but may use larger sizes like buckwheat. They can be used as primary heat, supplementary heat or have a dual set up with your existing oil/gas furnace.
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Posts: 20
Joined: Sun. Feb. 13, 2011 10:42 am
Hand Fed Coal Furnace: Marathon Yankee Coal & Wood
Coal Size/Type: Nut/Anthracite
Other Heating: Jotul Fireside 600 Woodstove
Stove/Furnace Make: Marathon
Stove/Furnace Model: Yankee
Location: New Paltz, NY

Post Sun. Feb. 13, 2011 8:07 pm

Coals keep going out on me. Manual says to keep air intake slot door open. This is above the coals. Might this be my problem? Furnace burns wood beautifully, has no barometric damper but great draft, 8" pipe, damper control on flue pipe, and damper door to ash tray. Burn strictly anthracite. Any tips are appreciated. Thanks.

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Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Blaschak Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW)
Location: N/E Ohio, between Medina and Wadsworth

Post Sun. Feb. 13, 2011 8:12 pm

Air above the coal sounds like a bituminous requirement.

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Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea
Location: Guilford, Connecticut

Post Sun. Feb. 13, 2011 8:37 pm

cheechblu wrote:Manual says to keep air intake slot door open. This is above the coals. Might this be my problem?
Most likely, anthracite wants all the air from below. Get it going good and fill it up all the way. It likes it deep.
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Hand Fed Coal Boiler: Bucket a Day
Hand Fed Coal Stove: Vigilant Casting 2310
Coal Size/Type: Pea/Nut/Wood in the VC and anything that will fit in the Bucket a Day. It's not fussy.
Location: Girardville Pa.

Post Sun. Mar. 16, 2014 5:46 pm

Wood and bit coal wants air across the top. Anthracite coal wants it ALL from the bottom up. Air going across the top of anthracite doesn't help except when you initially load it up. The xtra air across the top helps to burn off the gases being generated. Once they are burned close the top air and go only with bottom up air.

Last bumped by cheechblu on Sun. Mar. 16, 2014 5:46 pm.
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