Portage and Main Ml30 Coal Size Question

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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Post Sat. Jan. 18, 2014 6:13 pm

I've been burning wood in this unit for 3 years. Now I'm trying to burn coal. I do have coal grates in it. I've been trying to burn the large stove size coal but can't get the ash to shake out. After about a day and a half I ned to build a wood fire on top because it won't get hot enough with all that ash choking it. The next day I rake it to get the ash out and I start over. Maybe I need to shake it soone (went 24 hours before shaking) or maybe I need to use nut size coal instead of stove size. Can anyone offer a sugestion for this problem?

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Hot Air Coal Stoker Furnace: Will-Burt Combustioneer 77B
Coal Size/Type: Ohio BITUMINOUS pea stoker coal
Location: Buffalo/Adirondacks, NY

Post Sat. Jan. 18, 2014 11:29 pm

are you burning anthracite or bituminous?

coal in general likes to burn steady and have a DEEP bed of fuel.

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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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Post Sun. Jan. 19, 2014 12:43 pm

Burning anthracite.

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Stoker Coal Boiler: 1960 EFM520 installed in truck box
Hand Fed Coal Stove: Crane 404 with variable blower
Coal Size/Type: 404-nut, 520 rice ,anthracite for both
Location: Jonestown,Pa.17038

Post Sun. Jan. 19, 2014 1:22 pm

gitcodered,Welcome to the forum where you can get an answer to any coal burning question. I read your post late last night,i either have a very thick skull or a brain stuck in slow gear,i just reread your post & believe you might have answered your own question. You state that the fire won't get hot enough with "ALL THAT ASH"from 24 hrs,coal likes a hot fire,lots of air from below the grates,& lots of coal above.Try a vigorous shaking every 12 hrs. ,watch for ash pan to glow ,load lots of fresh coal on top of strong fire.Stove size vs. nut size,stove will burn quicker as more air is getting thru,but will burn up quicker too.Nut will slow the fire down,giving a longer consistent fire,just make sure going from wood to coal that you close the air dampers in the door & only have the below grate air open.Some coal burning experts will be along to guide you further on your coal burning adventure.By the way this stove does have shaker grates ?? as coal does not like to be disturbed too much from above.
David **** John14:6 Jesus saith unto him,"I am the way.the truth,and the life;no man cometh unto the father,but by me." Wise men sought for Jesus when he was born,wise men still seek Jesus today. Seek & you shall find.

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