EFM 350

Re: EFM 350

PostBy: VigIIPeaBurner On: Wed Feb 09, 2011 10:43 am

Tell me that's not the same paint from the Alaska's door :D
View: New PagePopup
VigIIPeaBurner
 
Hot Air Coal Stoker Furnace: Keystoker Koker
Hand Fed Coal Stove: Vermont Casting Vigilant II 2310
Other Heating: #2 Oil Furnace

Re: EFM 350

PostBy: coal berner On: Wed Feb 09, 2011 11:20 am

VigIIPeaBurner wrote:Tell me that's not the same paint from the Alaska's door :D
View: New PagePopup

No that is the original Metal emblem plate some where oval to The new ones are stickers :roll:
coal berner
 
Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520

Re: EFM 350

PostBy: VigIIPeaBurner On: Wed Feb 09, 2011 7:22 pm

Coulda fooled me! I pretty sure that he, like me, never throws anything out. ;) Suspiciosly similar colors and it's in the same spot... hmmm
coal berner wrote:
VigIIPeaBurner wrote:Tell me that's not the same paint from the Alaska's door :D
View: New PagePopup

No that is the original Metal emblem plate some where oval to The new ones are stickers :roll:
VigIIPeaBurner
 
Hot Air Coal Stoker Furnace: Keystoker Koker
Hand Fed Coal Stove: Vermont Casting Vigilant II 2310
Other Heating: #2 Oil Furnace

Re: EFM 350

PostBy: stoker-man On: Wed Feb 09, 2011 8:24 pm

As I remember the story, back in the 70s, one of efm's engineers left efm and used the S20 design to make the Alaska model. It is the efm pot design. efm didn't care because the stokers were almost extinct with cheap oil being abundant.
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: EFM 350

PostBy: coal berner On: Thu Feb 10, 2011 10:37 am

stoker-man wrote:As I remember the story, back in the 70s, one of efm's engineers left efm and used the S20 design to make the Alaska model. It is the efm pot design. efm didn't care because the stokers were almost extinct with cheap oil being abundant.

The Alaska above is the tri burner bed stoker design .
The one that Alaska is making with the auger feed underfed pot / EFM Design is the 140 model
coal berner
 
Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520

Re: EFM 350

PostBy: Wood'nCoal On: Thu Feb 10, 2011 11:11 pm

The emblem is the original EFM color. The Alaska doors were Chevrolet engine orange, I had a few cans of it around.
Coulda fooled me! I pretty sure that he, like me, never throws anything out.

Indeed! :D :)
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: EFM 350

PostBy: lincolnmania On: Fri Feb 11, 2011 7:31 am

very nice install, hope you are extra warm!
lincolnmania
 
Hot Air Coal Stoker Furnace: efm af-150 1982
Hot Air Coal Stoker Stove: alaska kodiak stoker 1986
Hand Fed Coal Stove: warm morning 1980 kenmore

Re: EFM 350

PostBy: Wood'nCoal On: Fri Feb 11, 2011 9:22 am

It hasn't gotten cold enough to really challenge the boiler yet. :o :D
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: EFM 350

PostBy: Wood'nCoal On: Fri Feb 18, 2011 10:18 pm

Smooth sailing so far since I corrected the auger pipe problem. :D
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Outfire!!!

PostBy: Wood'nCoal On: Mon Apr 11, 2011 7:56 pm

We had unusual weather today, the low last night was about 50°, the high temp. today was 82°. My chimneys are prone to draft reversal under such conditions, the chimney that services the boiler is big, on the exterior of the structure, and made of fieldstone. Yesterday I thought about changing the timer settings when I checked the forecast for today, but decided to wait.
The house was empty today (of humans, anyway) with no call for heat and no DHW use. Sometime during the day the warm outside air overcame the cold chimney's ability to create a draft and the timer's setting of 2 minutes per hour wasn't enough to compensate. Around 6:15 PM when I checked the boiler the fire was out. :o The water temperature was 125°. Fortunately the low temp aquastat I installed did it's job, the amount of coal in the ashpan was minimal.
So the boiler is relit and I set the timer to 2 minutes every half hour, which may be overkill but given the chimney's tendency to loose draft when there's a cool night and then a warm day I feel it should work out. :D
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: EFM 350

PostBy: Rob R. On: Tue Apr 12, 2011 9:17 am

What kind of boiler temperature do you see when the boiler has been idle all day? I'm sure it will be a little warmer with the additional timer cycle...which will also help the draft.

I have been watching my 520 closely during the last couple days. My timer is set at 1.5 minutes every 30, and so far the chimney continues to draft well. The boiler usually hangs out around 165 degrees, and I leave the door from the basement to the garage cracked open.
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: EFM 350

PostBy: Wood'nCoal On: Tue Apr 12, 2011 10:06 am

I just checked the boiler, everything is fine and the temperature is 170°. I haven't lowered the hi/low settings for the summer yet, since it's not summer.
Last night after relighting the fire and dumping a few shovels of coal on the little wood fire the temperature shot up to 210°. :shock:
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: EFM 350

PostBy: Wood'nCoal On: Thu May 26, 2011 7:53 pm

Now at 2 teeth on the feed...I think 1 might be a little too low :!:
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: EFM 350

PostBy: Wood'nCoal On: Sun Jul 24, 2011 10:14 pm

Been running 3 teeth on the feed, 2 wasn't keeping the boiler hot enough to produce enough hot water, but that was in the early spring, now the incoming water is not quite as cold. Low setting is 150 and the high is 200. Boiler temps have been staying around 170 to 180. Outfire timer was at 2 minutes every half hour for the warmer weather to keep the draft going (winter is 2 minutes per hour).
This morning the boiler was at an even 200 degrees. The obvious problem here is once the high limit is reached the timer won't fire the stoker, the fire could be lost. The other problem was the cellar was 90 degrees! I had 3/4 of the jacket on, no insulation except the front cover.
So I spent a good part of the day insulating the boiler, which is exactly the wrong thing to do for a boiler running near the high limit. :shock: I also reduced the timer to 1 1/2 minutes every half hour.
I'll see what happens. :D
I have photos but I'm having problems posting, after I write a post and click "submit" I'm logged out and everything is gone, I'll post them after this problem is resolved.
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: EFM 350

PostBy: Rob R. On: Mon Jul 25, 2011 6:54 am

I am surprised the boiler holds that much heat with no insulation. Adding insulation to the jackets will help keep the basement cool, but the boiler will be more likely to hit the high limit. You can add some sort of dump zone, and/or raise the high limit. Increased airflow through the basement will also help.

With no jackets, my 520 stays right at 160-165 degrees. Currently running 6 teeth, 2/30 on the timer. Basement is about 80 with the door open, oil boiler stays 130-140 degrees from gravity circulation between the two boilers. I was running on 3 teeth, but since I started using the tankless coil I had to increase the feed rate considerably.

My dad's Highboy has a more stable temperature than my DF, probably due to the increased mass.
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