Yet Another EFM520 Install Thread!

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.
User avatar
coalkirk
Member
Posts: 4678
Joined: Wed. May. 17, 2006 8:12 pm
Stoker Coal Boiler: 1981 EFM DF520
Coal Size/Type: anthracite/rice coal
Location: Forest Hill MD

Post Sat. Mar. 04, 2017 8:00 pm

Rob R. wrote:
coalkirk wrote:I've had no out fires or draft issues during the warm days. This morning it was 14 degrees. Went down to check the boiler. It was just SITTING there, not even running. This is going to take some getting used to.
EFM uses very realistic (conservative) BTU ratings for their equipment. Unlike some other stoker boilers that are rated based on some sort of mystery number, or on input BTU's rather than net output.

EFM says on 4 teeth that unit puts out 75,000 BTU's per hour. How does that compare to the Harman? 8-)
Four teeth sure seems like a lot more than 75,000 btu's. I would guess more like 125,000 BTU's I haven't moved off of 4&4. I am so glad I found this boiler.
Attachments
IMG_1948.JPG
You have enemies? Good. That means you've stood up for something, sometime in your life. Winston Churchill

"I would rather have a German division in front of me than a French one behind me." —General George S. Patton

Burning rice coal in a 1981 EFM DF520, nut coal in a hand fired Jotul 507.

User avatar
StokerDon
Site Moderator
Posts: 3252
Joined: Mon. Nov. 11, 2013 11:17 am
Stoker Coal Boiler: BairMatic BMC-500 with Van Wert VA400 Stoker, Gentleman Janitor GJ-671/EFM S-15 stoker, Van Wert VA-600
Hand Fed Coal Furnace: Harman SF3500
Coal Size/Type: Rice and Chestnut
Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood
Location: PA, Southern York County!

Post Sat. Mar. 04, 2017 8:55 pm

So much for the nice shinny paint inside!

Sounds like it's doing it's job better than expected!

-Don
There are few problems in life that cannot be solved by lighting something on fire.

User avatar
CoalHeat
Site Moderator
Posts: 8327
Joined: Sat. Feb. 10, 2007 9:48 pm
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Baseburners & Antiques: Sears Signal Oak 15 & Andes Kitchen Range
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert
Location: Stillwater, New Jersey

Post Sat. Mar. 04, 2017 9:23 pm

I'm glad you did too!
I'm running 4 teeth feed and around 5 or 5.5 on the air.
Quite amazing machines.
Heating a circa 1832 farmhouse with a Harman Magnafire Mark I & a 1959 EFM 350 (heating DHW).
100% Oil Free!
"It's what we learn after we think we know it all that counts."

Visit Alternate Heating Sytems

User avatar
coalkirk
Member
Posts: 4678
Joined: Wed. May. 17, 2006 8:12 pm
Stoker Coal Boiler: 1981 EFM DF520
Coal Size/Type: anthracite/rice coal
Location: Forest Hill MD

Post Sat. Mar. 11, 2017 6:16 am

Well after running for a month I discovered last night that I've actually been running 5 teeth. It's hard to count the clicks in real time. I took a video of the gear in action with the slo-mo feature of my phone and counted the clicks. So I assume I should adjust the air up to 5 too?
You have enemies? Good. That means you've stood up for something, sometime in your life. Winston Churchill

"I would rather have a German division in front of me than a French one behind me." —General George S. Patton

Burning rice coal in a 1981 EFM DF520, nut coal in a hand fired Jotul 507.

User avatar
Rob R.
Site Moderator
Posts: 11343
Joined: Fri. Dec. 28, 2007 4:26 pm
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy
Location: Chazy, NY

Post Sat. Mar. 11, 2017 7:00 am

4.5

Turn up the heat, take a shower, do some laundry, etc - then take a peak at the fire. Should have 1.5-2" ash ring.

User avatar
StokerDon
Site Moderator
Posts: 3252
Joined: Mon. Nov. 11, 2013 11:17 am
Stoker Coal Boiler: BairMatic BMC-500 with Van Wert VA400 Stoker, Gentleman Janitor GJ-671/EFM S-15 stoker, Van Wert VA-600
Hand Fed Coal Furnace: Harman SF3500
Coal Size/Type: Rice and Chestnut
Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood
Location: PA, Southern York County!

Post Sat. Mar. 11, 2017 9:03 am

coalkirk wrote:Well after running for a month I discovered last night that I've actually been running 5 teeth. It's hard to count the clicks in real time.
I guess that explains why the ash ring was a little on the small side. It wasn't throwing any lit coal over the side so the air was close to being right. You probably need to slightly increase the air. Try 4.25 then 4.5. Put a good load on it, like Rob said and check the ash ring after a long run.

-Don
There are few problems in life that cannot be solved by lighting something on fire.

Visit Alternate Heating Sytems

User avatar
StokerDon
Site Moderator
Posts: 3252
Joined: Mon. Nov. 11, 2013 11:17 am
Stoker Coal Boiler: BairMatic BMC-500 with Van Wert VA400 Stoker, Gentleman Janitor GJ-671/EFM S-15 stoker, Van Wert VA-600
Hand Fed Coal Furnace: Harman SF3500
Coal Size/Type: Rice and Chestnut
Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood
Location: PA, Southern York County!

Post Thu. Mar. 16, 2017 7:00 pm

Coalkirk, check your barrel!!!

You are probably using more coal now than when we fire this thing up. I filled my GJ up on Tuesday, normally it lasts about 5 days. I just took a look in the trashcan and I could see auger!

-Don
There are few problems in life that cannot be solved by lighting something on fire.

User avatar
coalkirk
Member
Posts: 4678
Joined: Wed. May. 17, 2006 8:12 pm
Stoker Coal Boiler: 1981 EFM DF520
Coal Size/Type: anthracite/rice coal
Location: Forest Hill MD

Post Thu. Mar. 16, 2017 7:08 pm

Yes I'm burning more coal for sure. Also the bagged coal I'm using is a white ash coal and it seems to really chew through it. Thanks for the reminder!
These bags weren't marked so I don't know whose coal it is but there is a *censored* load of ash with it too.
You have enemies? Good. That means you've stood up for something, sometime in your life. Winston Churchill

"I would rather have a German division in front of me than a French one behind me." —General George S. Patton

Burning rice coal in a 1981 EFM DF520, nut coal in a hand fired Jotul 507.

User avatar
coalkirk
Member
Posts: 4678
Joined: Wed. May. 17, 2006 8:12 pm
Stoker Coal Boiler: 1981 EFM DF520
Coal Size/Type: anthracite/rice coal
Location: Forest Hill MD

Post Wed. Mar. 22, 2017 8:23 am

My EFM520 is on its last 55 gallon drum of coal for this heating season. Will be out and shutting down within a couple days and switching to oil. Next project is to repeal and replace 8-) my coal bin. It will be larger (7x7) and have two sloped walls to the auger. It will allow coal to fall to the middle of the bin but when it gets low will require some raking toward the auger. I'm only using 2 sloped walls this time. Depending on how it works out, I may add sloped walls on the other sides next time. Per my calculations even with the sloped sides the bin will end up holding more coal than my present one.
You have enemies? Good. That means you've stood up for something, sometime in your life. Winston Churchill

"I would rather have a German division in front of me than a French one behind me." —General George S. Patton

Burning rice coal in a 1981 EFM DF520, nut coal in a hand fired Jotul 507.

Post Reply

Return to “Stoker Coal Boilers Using Anthracite (Hydronic and Steam)”