Thermopex Pipe or Insulated Pipe

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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Rob R.
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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. Nov. 19, 2013 1:43 pm

shy0302 wrote:the furnace that is the house has is 135000 BTU it does a good job of heating in the winter.
All that tells us is that the heating load is not greater than 135,000 btus/hr. It could easily be half that, but without fuel consumption data or an hour meter on the burner it is impossible to estimate.

Does this house have a boiler & radiators or a hot air furnace?

shy0302
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Posts: 32
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Location: EAST WORCESTER NY

Post Tue. Nov. 19, 2013 2:27 pm

when burning oil only the use is 1000 gal a year for heating the house in the winter , hot water is electric.

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Carbon12
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Posts: 2230
Joined: Tue. Oct. 11, 2011 6:53 pm
Stoker Coal Boiler: Keystoker KA-6
Coal Size/Type: Rice/Anthracite
Other Heating: Heat Pump/Forced Hot Air Oil Furnace
Location: Harrisburg, PA

Post Tue. Nov. 19, 2013 3:11 pm

So, 1000 gallons and about 6000 degree days at his location. That's .16 gallons per degree day .16 x 140,000 Btu's/ gallon=22,400 BTU's per degree day. Really cold day about 40 degree days per 24 hr period 22,400 x 40=896,000 BTU's divided by 24 hr=37,333 BTU's per hour. Hmmmm??? Somebody check my math.
No matter where you go,......there you are.

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Carbon12
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Posts: 2230
Joined: Tue. Oct. 11, 2011 6:53 pm
Stoker Coal Boiler: Keystoker KA-6
Coal Size/Type: Rice/Anthracite
Other Heating: Heat Pump/Forced Hot Air Oil Furnace
Location: Harrisburg, PA

Post Tue. Nov. 19, 2013 4:02 pm

Redid the calculation using historical max heating degree days of 60. Comes out to around 57,000 BTU's/hour.
No matter where you go,......there you are.

Visit Alternate Heating Sytems

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Carbon12
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Posts: 2230
Joined: Tue. Oct. 11, 2011 6:53 pm
Stoker Coal Boiler: Keystoker KA-6
Coal Size/Type: Rice/Anthracite
Other Heating: Heat Pump/Forced Hot Air Oil Furnace
Location: Harrisburg, PA

Post Tue. Nov. 19, 2013 5:17 pm

What's the size of the house where the boiler resides? How much coal do you burn for heat each season in that house?
No matter where you go,......there you are.

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Rob R.
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Posts: 11346
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. Nov. 19, 2013 8:21 pm

Carbon12 wrote:What's the size of the house where the boiler resides? How much coal do you burn for heat each season in that house?
Heating Two Houses

I would not hesitate to hook two 2000 sq. ft houses with moderate heat loss up to an EFM 700, but I have been accused of being a radical before. :roll:
Carbon12 wrote:So, 1000 gallons and about 6000 degree days at his location. That's .16 gallons per degree day .16 x 140,000 Btu's/ gallon=22,400 BTU's per degree day. Really cold day about 40 degree days per 24 hr period 22,400 x 40=896,000 BTU's divided by 24 hr=37,333 BTU's per hour. Hmmmm??? Somebody check my math.
You are assuming 100% efficiency of the oil unit.

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Carbon12
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Posts: 2230
Joined: Tue. Oct. 11, 2011 6:53 pm
Stoker Coal Boiler: Keystoker KA-6
Coal Size/Type: Rice/Anthracite
Other Heating: Heat Pump/Forced Hot Air Oil Furnace
Location: Harrisburg, PA

Post Tue. Nov. 19, 2013 8:27 pm

Yes, I assumed 100% efficiency. Was striving for a ballpark,....large ballpark,....figure.
No matter where you go,......there you are.

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Carbon12
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Posts: 2230
Joined: Tue. Oct. 11, 2011 6:53 pm
Stoker Coal Boiler: Keystoker KA-6
Coal Size/Type: Rice/Anthracite
Other Heating: Heat Pump/Forced Hot Air Oil Furnace
Location: Harrisburg, PA

Post Tue. Nov. 19, 2013 11:19 pm

Unless the house where the boiler is located is huge and poorly insulated, that boiler "probably" could heat both "most" of the time.
No matter where you go,......there you are.

Visit Alternate Heating Sytems

shy0302
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Posts: 32
Joined: Sat. Feb. 25, 2012 7:51 pm
Location: EAST WORCESTER NY

Post Wed. Nov. 20, 2013 6:07 pm

the stoker is a 700 or a 900, when I bought it it was advertised as a 520 but after asking questions on this forum I was told to look at the blower and it said S30 so it should be 700 or 900.

shy0302
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Posts: 32
Joined: Sat. Feb. 25, 2012 7:51 pm
Location: EAST WORCESTER NY

Post Wed. Nov. 20, 2013 6:22 pm

Carbon12 wrote:What's the size of the house where the boiler resides? How much coal do you burn for heat each season in that house?
have not hooked up the coal stoker yet but it is a 700efm and the first house I will be heating this year is the house that uses 1000 gal a year. all windows thermo new doors and insulated. I am heating with oil and a pellet stove in the living room and use three to four tons of pellets per year. the 1000 gal avg was per year before the pellet stove. want to go to coal to heat the hole house.

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Carbon12
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Posts: 2230
Joined: Tue. Oct. 11, 2011 6:53 pm
Stoker Coal Boiler: Keystoker KA-6
Coal Size/Type: Rice/Anthracite
Other Heating: Heat Pump/Forced Hot Air Oil Furnace
Location: Harrisburg, PA

Post Wed. Nov. 20, 2013 8:54 pm

Assuming similar efficiencies between oil furnace and coal boiler, you're looking at a little ove 5 tons of coal to heat the house. Domestic hot water production would add to the amount of coal you'll need. The coal is going to be WAY cheaper than the oil!!! :D :D :D
No matter where you go,......there you are.

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Rob R.
Site Moderator
Posts: 11346
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 Thu. Nov. 21, 2013 5:53 am

shy0302 wrote:
Carbon12 wrote:What's the size of the house where the boiler resides? How much coal do you burn for heat each season in that house?
have not hooked up the coal stoker yet but it is a 700efm and the first house I will be heating this year is the house that uses 1000 gal a year. all windows thermo new doors and insulated. I am heating with oil and a pellet stove in the living room and use three to four tons of pellets per year. the 1000 gal avg was per year before the pellet stove. want to go to coal to heat the hole house.
1000 gallons per year...your home won't even make that 700 flinch.

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