These EFM Coal Burners Sound Great

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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QUESTMAN
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Posts: 2
Joined: Mon. Feb. 25, 2008 8:02 pm
Stove/Furnace Make: NA
Stove/Furnace Model: NA

Post Mon. Feb. 25, 2008 8:14 pm

HOW GOOD ARE THESE UNITS?? They sound like a great alternative to wood,oil, etc.

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ted
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Posts: 38
Joined: Wed. Sep. 26, 2007 10:48 pm
Stove/Furnace Make: efm new /foxfire HAND FEED old
Stove/Furnace Model: 520 BOILER
Location: scotia new york

Post Mon. Feb. 25, 2008 8:21 pm

i think that my used efm 520 was one of the best things that I have done in our home, we went from a hand fed coal wood boiler that was always needing to be restarted to our efm 520 that is always burning and keeping house warm... just keep the feed barrel full of coal and dump the ashes havent been this comfortable in this house over last 18 years as we have been since we lit efm 520 in november
our boiler was a used unit 1966 vintage
Ted

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e.alleg
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Posts: 1285
Joined: Fri. Feb. 16, 2007 10:31 am
Stove/Furnace Make: EFM
Stove/Furnace Model: 520
Location: western ny

Post Mon. Feb. 25, 2008 9:46 pm

I bought mine used last year, I lit it in October and it hasn't gone out since. Plenty of heat and the thing is easy to maintain and repair if ever needed, the parts are all heavy duty and the stoker is very simple in operation. It is by far the best thing I have bought for the house, and the best part is that it has almost paid for itself already in propane savings, for certain it will be earning money come next winter.
Burning coal is definitely worth the extra work involved.
"Good enough" is not good enough.

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stoker-man
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Posts: 2063
Joined: Mon. Nov. 19, 2007 9:33 pm
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove
Location: Lehigh Valley, PA

Post Mon. Feb. 25, 2008 9:49 pm

They have been in production since 1951 and many are still in use from the '50s. The serial numbers are up to 99,1400+ and almost all parts are interchangeable no matter when it was made.
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e.alleg
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Posts: 1285
Joined: Fri. Feb. 16, 2007 10:31 am
Stove/Furnace Make: EFM
Stove/Furnace Model: 520
Location: western ny

Post Mon. Feb. 25, 2008 9:50 pm

is there a prize for whoever orders the 100,000th boiler?
Burning coal is definitely worth the extra work involved.
"Good enough" is not good enough.

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Scottscoaled
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Posts: 2597
Joined: Tue. Jan. 08, 2008 9:51 pm
Stoker Coal Boiler: EFM 520, 700, Van Wert 800 GJ 61,53
Baseburners & Antiques: Magic Stewart 16, times 2!
Coal Size/Type: Lots of buck
Other Heating: Slant Fin electric boiler backup
Location: Malta N.Y.

Post Mon. Feb. 25, 2008 11:11 pm

Shssssssssss.Everyone will want one. ;) Scott
I think a man does what he can, untill his destiny is revealed. Right now that is trying to sell my EFM plate boilers in 520 and 700 sizes.

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stoker-man
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Posts: 2063
Joined: Mon. Nov. 19, 2007 9:33 pm
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove
Location: Lehigh Valley, PA

Post Tue. Feb. 26, 2008 5:37 am

Maybe we'll have a contest and give it away !
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Bob
Member
Posts: 304
Joined: Sun. Mar. 18, 2007 11:28 am
Stoker Coal Boiler: AHS 130
Coal Size/Type: Pea/Anthracite
Location: Schuylkill County

Post Tue. Feb. 26, 2008 10:53 am

While I ultimately decided to buy an AHS unit I have nothing but the highest regard for the EFM units. I know several people who have them and have had an excellent experience.

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coal berner
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Posts: 3591
Joined: Tue. Jan. 09, 2007 12:44 am
Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520
Location: Pottsville PA. Schuylkill County PA. The Hart Of Anthracite Coal Country.

Post Tue. Feb. 26, 2008 12:33 pm

Hey stoke man May be you can answer this Question when figuring out the specs on the 520 What is the B.T.U value that They are using for the coal per lb BTU's Because when looking in the manual under Specification Output Per Hr.
Gross Output is 214.690 BTUH At 25lb Per Hr with a 10 Teeth feed Setting Net Output BTUH is 186.690 BTUH When you do the math Just Taking The Coal at 25 lbs Per Hr With the coal burning at 13.500 BTU's Per lb That would be 337.500 BTUH so there is like a 122.810 BTUH loss with the 520 what I am I missing in you specs Other then Heat loss in the water & chimney Just wondering what BTU's They are using for coal Per lb With these Numbers you are looking at like a 60% efficient rating :?: what I am I missing here :? Thanks
J.C.

Heating house & water with a 1986 electric furnace man DF520 using buckwheat Anthracite coal

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e.alleg
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Posts: 1285
Joined: Fri. Feb. 16, 2007 10:31 am
Stove/Furnace Make: EFM
Stove/Furnace Model: 520
Location: western ny

Post Tue. Feb. 26, 2008 1:34 pm

I wondered the same thing, all I can figure is that a pound of coal contains 30% fines, dirt, water, rocks.
Burning coal is definitely worth the extra work involved.
"Good enough" is not good enough.

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coaledsweat
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Posts: 9827
Joined: Fri. Oct. 27, 2006 2:05 pm
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea
Location: Guilford, Connecticut

Post Tue. Feb. 26, 2008 1:55 pm

This is for steam, but it will give you an idea of what they are doing to get those numbers.
**Broken Link(s) Removed**An EFM 520 should run in the 80-85% range.
Nothing is impossible for people who don't have to do it themselves.

stoakerdude
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Posts: 9
Joined: Tue. Feb. 19, 2008 8:28 pm
Stove/Furnace Make: efm
Stove/Furnace Model: 250

Post Sat. Mar. 01, 2008 8:57 pm

My sump pump failed while I was away and when I returned the basament was flooded! Pumped about 3 feet of water out of basement!! The efm stoaker was totally covered by water. When I went down to the basement to assess the damage I heard the stoaker running!!!!Naturally the fire was out so I shut the unit down and drained the water out of the motor,Put fresh oil in the top gear oiler and fired it up.That was 3 weeks ago and it just keeps chugging away.I think these efm stoakers are indestructable.This stoaker is close to 40 years old and I don't think it is ever going to wear out but if it does I will buy another one. Stoakerdude

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stoker-man
Verified Business Rep.
Posts: 2063
Joined: Mon. Nov. 19, 2007 9:33 pm
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove
Location: Lehigh Valley, PA

Post Sat. Mar. 01, 2008 10:42 pm

You can install an L6006 aquastat and the stoker won't run if the fire goes out. This prevents you from coming home to an ash can full of good coal.
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stoakerdude
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Posts: 9
Joined: Tue. Feb. 19, 2008 8:28 pm
Stove/Furnace Make: efm
Stove/Furnace Model: 250

Post Sun. Mar. 02, 2008 12:58 pm

Thanks for the tip on the aquastat.I have filled up the ash bin with coal several times over the years. If I use the l6006 aquastat will I still have to use the timer to keep the fire going on warm days? Stoakerdude

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stoker-man
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Posts: 2063
Joined: Mon. Nov. 19, 2007 9:33 pm
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove
Location: Lehigh Valley, PA

Post Sun. Mar. 02, 2008 1:18 pm

Yes. The 6006 only senses the out-fire and prevents the stoker motor from starting.
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