Yet another EFM520 install thread!

Re: Yet another EFM520 install thread!

PostBy: Rob R. On: Fri Feb 10, 2017 7:28 am

coalkirk wrote:The trusty Harman would have been running balls out struggling to meet the demand. The EFM was just sitting there like is that all you've got?


Remember this thread?

Scottscoaled boiler sizing method

That EFM 520 will do a great job heating your house, and if you want to put on a huge addition or heat the neighbors house, just increase the feed by a few teeth. :)



I think this is the first winter I have left my 520 on 4 teeth through the coldest weather. Between the insulation improvements I have made and the really good coal, it is doing a fine job. It is pretty dam cold outside right now, and the 520 is shouldering the load just fine.

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Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy

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Re: Yet another EFM520 install thread!

PostBy: coalkirk On: Fri Feb 10, 2017 9:05 am

No more additions in my future but its sure nice to be able to adequately heat the ones I have without a struggle. The Harman did a great job considering what I was asking it to do. It really should be a home about 2,500 sq. ft. I'm on 4 teeth and 4 air. Easy peasy.
coalkirk
 
Stoker Coal Boiler: 1981 EFM DF520
Coal Size/Type: anthracite/rice coal

Re: Yet another EFM520 install thread!

PostBy: StokerDon On: Fri Feb 10, 2017 9:30 am

Once you get the hour meter installed, that will tell the tail of what feed rate you should run. Basically, if it runs 10 hours a day at 4 teeth and 7 hours a day at 5 teeth, set it at 5 teeth. Although 4 teeth may heat the load adequately, 5 teeth will do it with less coal and less stress on the stoker.

By the way, this post needs more pictures!

-Don
StokerDon
 
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

Re: Yet another EFM520 install thread!

PostBy: coalkirk On: Fri Feb 10, 2017 11:16 am

You are right Don! Here's a few I took this morning. My wife is getting tired of me gushing over this boiler. She listens politely but I can see she's not interested anymore! :roll:
Looks like I got my file descriptions screwed up but you "get the picture."
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got the PRV extension installed
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Manometer at .04
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RC baro doing its job
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coalkirk
 
Stoker Coal Boiler: 1981 EFM DF520
Coal Size/Type: anthracite/rice coal

Re: Yet another EFM520 install thread!

PostBy: titleist1 On: Fri Feb 10, 2017 11:37 am

coalkirk wrote:My wife is getting tired of me gushing over this boiler. She listens politely but I can see she's not interested anymore!


Wimmennnsssss..... I get the eye roll from both of them here when i talk about the stoker but guess who headed to the basement to stand in front of it yesterday when they got home?! The cats had to make room for the humans. And guess who took their birdfeeders to the workshop to fill them yesterday where the other stoker is running?!

And there still weren't any volunteers to be found to carry out the ash pan last night.

That fire looks great....and no drips and/or drama involved with the install.....well done fellas!

:notworthy:
titleist1
 
Hot Air Coal Stoker Stove: Harman Mag Stoker (old style) one in basement, one in workshop
Hand Fed Coal Stove: Harman Mark III on standby for long power outages
Coal Size/Type: Rice/Anthracite; Nut/Anthracite

Re: Yet another EFM520 install thread!

PostBy: CoalHeat On: Fri Feb 10, 2017 3:27 pm

If I recall...you have an indirect heating DHW correct? In the summer what supplies your hot water? You might find the EFM does the job in the summer too. Mine runs 365 days a year.
CoalHeat
 
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

Re: Yet another EFM520 install thread!

PostBy: coalkirk On: Fri Feb 10, 2017 3:54 pm

I have an electric water heater also. The efm would work against my ac too much.
coalkirk
 
Stoker Coal Boiler: 1981 EFM DF520
Coal Size/Type: anthracite/rice coal

Re: Yet another EFM520 install thread!

PostBy: CoalHeat On: Fri Feb 10, 2017 7:46 pm

Insulation and jackets on!

That would depend on a thorough analysis of the cost of heating DHW with the electric as opposed to the boiler. Or in my case letting my oil-fired hot water heater sit there unused because I'm stubborn and wanna run the boiler all the time.
CoalHeat
 
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

Visit Leisure Line

Re: Yet another EFM520 install thread!

PostBy: CoalHeat On: Sat Feb 11, 2017 3:22 pm

One note about an EFM: They work better when the auger is covered. I got a whiff of combustion a little while ago, went downstairs and covered the auger back up. DUH.
Airing out the place now.
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CoalHeat
 
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

Re: Yet another EFM520 install thread!

PostBy: Rob R. On: Sat Feb 11, 2017 4:07 pm

Just looked at all the pictures. You and Don did a nice job.

If you burn 80-100 lbs per day when it is cold the 4 teeth of feed should be perfect. Higher feed rates reduce run time, but increase the number of motor starts, and the fire spends more time with a non optimal ash ring.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy

Re: Yet another EFM520 install thread!

PostBy: CoalHeat On: Sat Feb 11, 2017 4:29 pm

I would think that could result in more pieces of unburnt coal in the ashpan, no?
CoalHeat
 
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

Re: Yet another EFM520 install thread!

PostBy: coalkirk On: Sun Feb 19, 2017 9:37 am

I just topped off my 55 gallon drum. It took five 5 gallon buckets or roughly 175 lbs of coal. I had topped it off on Tuesday morning so that's 5 days on 175 lbs or 35 lbs a day average. We had 1 or 2 cold days but mild weather also. 70 yesterday. Warm week coming up. If I was burning the Harman I would probably shut down but I think I'll see how it goes.

My 55 gallon drum is plastic with the metal ring that seals it shut tight so I get no odor even with the short pot auger only.
coalkirk
 
Stoker Coal Boiler: 1981 EFM DF520
Coal Size/Type: anthracite/rice coal

Re: Yet another EFM520 install thread!

PostBy: StokerDon On: Sun Feb 19, 2017 10:15 am

How did your draft hold up with temps in the low 70's yesterday? It was warm enough that all kinds of bugs were out! I wish Winter would come back.

-Don
StokerDon
 
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

Re: Yet another EFM520 install thread!

PostBy: coalkirk On: Mon Feb 20, 2017 8:56 am

StokerDon wrote:How did your draft hold up with temps in the low 70's yesterday? It was warm enough that all kinds of bugs were out! I wish Winter would come back.

-Don

On idle stayed at .01. Not great but just enough.
coalkirk
 
Stoker Coal Boiler: 1981 EFM DF520
Coal Size/Type: anthracite/rice coal

Re: Yet another EFM520 install thread!

PostBy: CoalHeat On: Wed Feb 22, 2017 11:05 am

You can always install a draft inducer on the smoke pipe. You will have to get a speed control for it, full speed will pin the baro wide open. Then the motor won't be turning fast enough to cool itself with the internal fan so you'll have to install a cooling fan for the draft inducer. :roll:

But it works very well.
CoalHeat
 
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

Visit Leisure Line