350 Restoration

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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vermontday
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Posts: 328
Joined: Wed. Oct. 22, 2008 8:27 pm
Stoker Coal Boiler: EFM 520
Location: Bennington, VT

Post Fri. Apr. 18, 2014 10:39 am

I have my aquastat on the auger tube set at 160F.

It only alarmed once, when I was trying some really crazy summer settings.
US dependence on foreign oil has created the greatest transfer of wealth in history.

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plumber
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Posts: 375
Joined: Sun. Mar. 27, 2011 10:52 am
Stoker Coal Boiler: EFM 350
Location: Bridgeton, RI

Post Fri. Apr. 18, 2014 10:46 am

Thanks, the electrical was definitely the worst part of this job. However it all works. Not as neat as I wanted, but I've got 10 lbs of wiring in a 3 lb bag. Used a little more bx than I wanted to, I'd rather have used emt but didn't have the space. Also, I wanted to mount the Logo so the screen was exposed. After destroying 5 box covers I found a hinged box and settled on that. Hoping to tear out the old boiler and finish this install tomorrow. I'll add the LP backup boiler in a few weeks. That will be a quick job as I left piping and electrical provisions for it. Actually my current boiler is operating off the new boiler wiring. My only question is what to set the aquastat on the auger tube to?
Ernie

Feet and knees together

plumber
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Posts: 375
Joined: Sun. Mar. 27, 2011 10:52 am
Stoker Coal Boiler: EFM 350
Location: Bridgeton, RI

Post Fri. Apr. 18, 2014 10:49 am

vermontday wrote:I have my aquastat on the auger tube set at 160F.

It only alarmed once, when I was trying some really crazy summer settings.
Already answered my question thanks! As well, thanks for the Logo. Much more than I expected and we'll worth it. I like the time you put into this program and the manual you assembled. Very easy to follow. Looking forward to playing with the settings and taking advantage of all its operations.
Ernie

Feet and knees together

plumber
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Posts: 375
Joined: Sun. Mar. 27, 2011 10:52 am
Stoker Coal Boiler: EFM 350
Location: Bridgeton, RI

Post Sun. Apr. 20, 2014 12:42 am

Happiness. ........ at last! !!!

More photos of the installation to follow after I clean the disaster I made in my basement.
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Last edited by plumber on Sat. Apr. 01, 2017 7:08 am, edited 2 times in total.
Reason: fixed picture
Ernie

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Rob R.
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Posts: 11368
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 Sun. Apr. 20, 2014 6:00 am

Nice!

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vermontday
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Posts: 328
Joined: Wed. Oct. 22, 2008 8:27 pm
Stoker Coal Boiler: EFM 520
Location: Bennington, VT

Post Sun. Apr. 20, 2014 9:53 pm

Awesome!
US dependence on foreign oil has created the greatest transfer of wealth in history.

plumber
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Posts: 375
Joined: Sun. Mar. 27, 2011 10:52 am
Stoker Coal Boiler: EFM 350
Location: Bridgeton, RI

Post Mon. Apr. 21, 2014 6:31 pm

All that's left is to insulate and paint the jacket.
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Last edited by plumber on Sat. Apr. 01, 2017 7:08 am, edited 2 times in total.
Reason: Fixed pictures
Ernie

Feet and knees together

plumber
Member
Posts: 375
Joined: Sun. Mar. 27, 2011 10:52 am
Stoker Coal Boiler: EFM 350
Location: Bridgeton, RI

Post Mon. Apr. 21, 2014 6:32 pm

......and figure out how to post properly oriented photos. Thanks for the last fix, Rob.
Ernie

Feet and knees together

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User avatar
Rob R.
Site Moderator
Posts: 11368
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 Mon. Apr. 21, 2014 9:54 pm

What are the aquastats for in each return leg?

Nice job with the remote mounted Hydrostat.

User avatar
Rob R.
Site Moderator
Posts: 11368
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 Tue. Apr. 22, 2014 6:15 am

plumber wrote:......and figure out how to post properly oriented photos. Thanks for the last fix, Rob.
No problem. I use a free program called "Ifranview" to rotate the pictures.

plumber
Member
Posts: 375
Joined: Sun. Mar. 27, 2011 10:52 am
Stoker Coal Boiler: EFM 350
Location: Bridgeton, RI

Post Tue. Apr. 22, 2014 6:17 am

One aquastat is a 6006, it is set at 100° . If the temp goes below 100°, it kills the power to the EFM and will energize the oil boiler. The other aquastat is a 4006 and is set at 240° for a dump zone. With just a couple days of operation, I'm not even sure I need one as I haven't seen the temperature rise more than 5° on idle.
I really like the Hydrostat. This was my first install using one. I'm quite impressed, and the remote mounting is a bonus. Made the wiring much neater. The price is right and so is the quality, I'll be stocking these for replacements.
Ernie

Feet and knees together

User avatar
Rob R.
Site Moderator
Posts: 11368
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 Tue. Apr. 22, 2014 6:19 am

I have Hydrostats on five EFM's, they work great. Mine is the 3250 model.

You have discovered the benefit of thermal mass in a coal boiler...the temperatures are much more stable.

plumber
Member
Posts: 375
Joined: Sun. Mar. 27, 2011 10:52 am
Stoker Coal Boiler: EFM 350
Location: Bridgeton, RI

Post Tue. Apr. 22, 2014 6:37 am

I've got the electrowell. Nice to not have to put in an additional LWCO. As well as re remote mounting kit, I also got the outdoor sensor. All for less than a Honeywell with less features.
Ernie

Feet and knees together

plumber
Member
Posts: 375
Joined: Sun. Mar. 27, 2011 10:52 am
Stoker Coal Boiler: EFM 350
Location: Bridgeton, RI

Post Sun. Jun. 01, 2014 6:01 am

Complete! !
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Ernie

Feet and knees together

User avatar
Rob R.
Site Moderator
Posts: 11368
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 Sun. Jun. 01, 2014 6:06 am

looks great. Still running for hot water?

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