It's Alive!

Re: It's Alive!

PostBy: Scottscoaled On: Sat Dec 17, 2016 11:33 am

Rob R. wrote:I am claiming victory over the first round with old man winter. Last night around 7 pm was brutal, I think the stoker ran continuously for an hour, and then began to occasionally shut off. The wind gradually died down overnight. My porch thermometer showed -5 last night, and still does this morning...but with no wind this morning the boiler is hardly running.


Why is the damper on your oil boiler partially open???????
Scottscoaled
 
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

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Re: It's Alive!

PostBy: Scottscoaled On: Sat Dec 17, 2016 11:33 am

That's heat going up the chimney!!!!
Scottscoaled
 
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

Re: It's Alive!

PostBy: Rob R. On: Sat Dec 17, 2016 11:45 am

I haven't decided if I will remove the flue pipe from the oil boiler and disable it, or leave it in its current state of automatic backup. I have removed the flue pipe before and not observed any significant savings, and the one time I needed the automatic backup I was glad to have it.
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: It's Alive!

PostBy: Scottscoaled On: Sat Dec 17, 2016 11:47 am

Stick your hand in there and feel the heat blowing by. Might change your mind.
Scottscoaled
 
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

Re: It's Alive!

PostBy: Rob R. On: Sat Dec 17, 2016 12:37 pm

Scottscoaled wrote:Stick your hand in there and feel the heat blowing by. Might change your mind.


Just did - all I could feel was room temperature air being drawn in, but your point is taken. I will cover the baro.
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: It's Alive!

PostBy: Scottscoaled On: Sat Dec 17, 2016 1:44 pm

When my coal boiler was hooked up in series with my oil boiler, you could feel the draft thru the oil boiler robbing the heat out of the oil boiler. The oil boiler would start drawing draft then the baro would open. When I stuck my arm down in the exhaust pipe leading to the oil boiler, I could feel the 180 degree heat rising up thru the stack. What else would make the baro open? It all ready has lost enough heat thru the chimney to pull a draft. Covering the baro might make it worse in my opinion.
Scottscoaled
 
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

Re: It's Alive!

PostBy: Rob R. On: Sat Dec 17, 2016 4:08 pm

You probably had a Beckett burner. My Riello has a damper that closes and prevents air from being drawn through the boiler.

I will remove the flue pipe and block the thimble, and will compare the coal consumption vs degree days over the next month.
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: It's Alive!

PostBy: Scottscoaled On: Sat Dec 17, 2016 4:32 pm

You're right. It was a Becket burner. But what is causing you to draw draft?
Scottscoaled
 
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

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Re: It's Alive!

PostBy: Rob R. On: Sat Dec 17, 2016 4:49 pm

Scottscoaled wrote:You're right. It was a Becket burner. But what is causing you to draw draft?


Wicked winds over the roof peak. It happens even if the boiler is stone cold.
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: It's Alive!

PostBy: Scottscoaled On: Sat Dec 17, 2016 6:30 pm

Guess there's no need to disconnect the exhaust and do a study if there is no draft coming thru the oil boiler.
Scottscoaled
 
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

Re: It's Alive!

PostBy: Rob R. On: Fri Jan 20, 2017 7:24 am

Rob R. wrote:
I will remove the flue pipe and block the thimble, and will compare the coal consumption vs degree days over the next month.


From 10-29-16 to 12-17-16 I averaged .82 lbs of coal per degree day, and that was with the heat pump helping through November.

From 12-17-16 to 1-19-17 I averaged .78 lbs of coal per degree day, without the heat pump.

This tells me two things.

1. The efficiency of the coal heating system improves as the weather gets colder and there are fewer times when the entire system has to get heated up just to add a little heat to the living space - that was my reasoning for using the heat pump back in the fall.

2. Unhooking the flue pipe from the oil boiler seems to have little to no effect on the amount of coal I burn. Or, the effect is less than the efficiency improvement that comes with the colder weather and longer run times of the boiler.

I have decided to hook the flue pipe back up to the oil boiler and put it back into "ready for action" mode.
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: It's Alive!

PostBy: Lightning On: Fri Jan 20, 2017 3:55 pm

So now that's it's hooked back up you should do another comparison to prove that the efficiency didn't change :)
Lightning
 
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size

Re: It's Alive!

PostBy: Rob R. On: Sun Jan 29, 2017 2:01 pm

Lightning wrote:So now that's it's hooked back up you should do another comparison to prove that the efficiency didn't change :)


Done...did not seem to change anything. I suspect there are other variables that probably make more of a difference than what I am trying to measure.
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: It's Alive!

PostBy: Rob R. On: Sat Feb 04, 2017 8:40 pm

One of the good things about getting a new computer is it gives you an opportunity to look through your old files before migrating them over. In that process I found some more pictures of my EFM install that never made it in this thread.

For those that do not remember, I started out with a hand-fed boiler that cracked in December of 2010. I ordered a used EFM DF520 from Dave O'Neil, and he brought it a few weeks later. The wind chill was about -15 the day he came, and we were able to remove the old boiler, put the EFM in the basement, and mount the EFM on the base without any issues. Over the next two weeks I worked on it after work, and got it ready to fire on a morning that happened to be 22 below zero. 6 years later it is still running great, and it has gained a set of insulated jackets, stainless auger tubes, and improved controls.
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Wood boiler ready to come out
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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

Re: It's Alive!

PostBy: waldo lemieux On: Sat Feb 04, 2017 8:58 pm

Rob, is the old wood boiler a marathon heater (logwood) boiler? Looks identical to my old unit. mine was the bigger of the two sizes they made, and they are still made about 15 miles from my house.
waldo lemieux
 
Stove/Furnace Make: efm
Stove/Furnace Model: s-20

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