Combustioneer coal size screening

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fizban
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Posts: 41
Joined: Fri. Oct. 09, 2015 3:30 pm
Location: SW Virginia
Hot Air Coal Stoker Furnace: Combustioneer 77B
Hand Fed Coal Stove: Warm Morning 400B
Coal Size/Type: Bit various sizes
Other Heating: Oil furnace

Post by fizban » Tue. Dec. 24, 2019 9:01 pm

Hey everybody, I picked up a combustioneer 77B over the summer. I picked up some pea coal but I noticed it has some pieces that are something over an inch size. I see that the manual says 1 inch by quarter inch coal. What exactly does that mean? What size screen should I use to screen the coal? I picked up some 1 in.² screen to try. Thanks.

 
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McGiever
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Joined: Sun. May. 02, 2010 11:26 pm
Location: Junction of PA-OH-WV
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hand Fed Coal Boiler: BUCKET A DAY water heater
Hand Fed Coal Stove: Warm Morning 414A
Coal Size/Type: PEA,NUT,STOVE /ANTHRACITE
Other Heating: Ground Source Heat Pump and some Solar

Post by McGiever » Wed. Dec. 25, 2019 1:09 am

Bituminous coal I hope. ;)


 
fizban
Member
Posts: 41
Joined: Fri. Oct. 09, 2015 3:30 pm
Location: SW Virginia
Hot Air Coal Stoker Furnace: Combustioneer 77B
Hand Fed Coal Stove: Warm Morning 400B
Coal Size/Type: Bit various sizes
Other Heating: Oil furnace

Post by fizban » Wed. Dec. 25, 2019 12:05 pm

Yeah, it is some local bit coal. I tried the 1 inch screen and it seem to do pretty well, but I do have some pieces longer than 1 inch long. I guess the cool size is a little confusing to someone used to just hand fed stove.

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

Post by carlherrnstein » Thu. Dec. 26, 2019 6:05 pm

You want to get what is called "pea stoker" 1" inch top size 1/4" bottom size is what is recommended per the manual. I can tell you from experience if you get a large piece in there it will ride on top of the auger and not go in. If you get two or three on top of the auger they block coal from going in and you have to have to start digging. That is not the most pleasant thing to do at 2:00 AM........... Also if you have way to much fines (coal dust) the coal can "bridge" and you have to poke a bar down the hopper to collapse it.

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