Which Boiler for Multiple Buildings

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.
Petron
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Posts: 12
Joined: Tue. Jan. 21, 2014 12:50 pm
Hot Air Coal Stoker Stove: Econo
Coal Size/Type: Rice

Post Tue. Jan. 21, 2014 8:13 pm

I need to know which boiler will be capable of heating 2 buildings. First is my home. 2500 square feet of ground floor, and 2 zones. Second a shop with 3 zones and 2300 square feet of radiant floor. The shop is about 100' away from the home. So external,in ground piping will be needed.. I think I really need help with this if it's possible. Thanks

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Hambden Bob
Member
Posts: 6473
Joined: Mon. Jan. 04, 2010 10:54 am
Hot Air Coal Stoker Stove: Harman 1998 Magnum Stoker
Hand Fed Coal Stove: Blower Model Coal Chubby 1982-Serial#0097
Coal Size/Type: Rice-A-Roni ! / Nut
Other Heating: Pro-Pain Forced Air
Location: Hambden Twp. Geauga County,Ohio

Post Tue. Jan. 21, 2014 8:17 pm

Welcome to the Coal Board! I'm sure our Hydronics Experts will be thrilled to sink their teeth into this one for 'Ya! Stand By! Oh,it's gonna help them to give the area where you reside(Yukon,Fiji,Siberia) Just how low does it go where you're at ! :up:
Remember,There's No Sight Like Anthracite !......Hambden Bob

Petron
New Member
Posts: 12
Joined: Tue. Jan. 21, 2014 12:50 pm
Hot Air Coal Stoker Stove: Econo
Coal Size/Type: Rice

Post Tue. Jan. 21, 2014 8:41 pm

I live in down east Maine, so it's a bit chilli at times

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Scottscoaled
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Posts: 2597
Joined: Tue. Jan. 08, 2008 9:51 pm
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
Location: Malta N.Y.

Post Tue. Jan. 21, 2014 9:10 pm

Ahhh. Sounds like you need something a bit bigger. Do a heat loss calculation and get back to us. Sounds to me like you need an EFM 700. Are you planning on adding some more load? Pm sent. Check the icon on top.
I think a man does what he can, untill his destiny is revealed. Right now that is trying to sell my EFM plate boilers in 520 and 700 sizes.

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tikigeorge
Member
Posts: 210
Joined: Wed. Jun. 11, 2008 12:07 am
Stoker Coal Boiler: Keystoker KA-6
Stove/Furnace Make: Keystoker
Stove/Furnace Model: KA-6
Location: Phillipsburg NJ

Post Tue. Jan. 21, 2014 9:51 pm

Call Keystoker. I have one and it is great!

Petron
New Member
Posts: 12
Joined: Tue. Jan. 21, 2014 12:50 pm
Hot Air Coal Stoker Stove: Econo
Coal Size/Type: Rice

Post Tue. Jan. 21, 2014 9:58 pm

Tiki does that have a hopper or is it auger . I'm thinking about making a 1-2 ton storage bin in my cellar, if the correct stove can be found, so it can run for several weeks un attended if necessary ....I hope :D

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Rick 386
Member
Posts: 2474
Joined: Mon. Jan. 28, 2008 4:26 pm
Stoker Coal Boiler: AA 260 heating both sides of twin farmhouse
Hot Air Coal Stoker Stove: LL Hyfire II w/ coaltrol in garage
Coal Size/Type: Pea in AA 260, Rice in LL Hyfire II
Other Heating: Gas fired infared at work
Location: Royersford, Pa
Contact:

Post Tue. Jan. 21, 2014 10:55 pm

Petron wrote:<snip>.... so it can run for several weeks un attended if necessary ....I hope :D
No coal unit will run several weeks unattended. Or should be left unattended. At the very minimum, the ashes will need to be removed unless you would build it over a pit.

But do get that heat loss calculation done. That is the first step to decide what unit may be able to handle the job for you.

Rick
Master of "Trial and Error."

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tomcat
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Posts: 22
Joined: Sat. Nov. 30, 2013 10:47 pm
Stoker Coal Boiler: k-4 keystoker
Hot Air Coal Stoker Stove: old magnum
Hand Fed Coal Stove: 400 warm morning, sf250
Hand Fed Coal Furnace: sf3500
Coal Size/Type: rice and buck mix, stove, nut
Location: Pine Grove , PA

Post Tue. Jan. 21, 2014 11:10 pm

Call Don Sommers at Keystoker. He can tell you what keystoker unit would do the best job for your needs. 570-385-3873

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Rob R.
Site Moderator
Posts: 11356
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 Wed. Jan. 22, 2014 4:45 am

tomcat wrote:Call Don Sommers at Keystoker. He can tell you what keystoker unit would do the best job for your needs. 570-385-3873
He won't be able to tell him anything if no one knows the heating load of the two buildings.

macdabs
Member
Posts: 142
Joined: Mon. Jan. 03, 2011 1:57 pm
Stoker Coal Boiler: AHS 260
Coal Size/Type: Pea
Other Heating: Pellet,oil
Stove/Furnace Make: AHS
Stove/Furnace Model: S260
Location: central Pa

Post Wed. Jan. 22, 2014 5:01 am

I heat two buildings with my AHS 260. The boiler is in my 3600 sq ft radiant floor steel building feeding my house oil boiler that is 245 ft uphill from the shop. I heat on average 3500 sq ft at the house. More if I turn the heat on in the attached garage.

The weeks unattended is a problem . On cold days like today -4 the ash pan will need emptied at the end of the day .

Mac

Petron
New Member
Posts: 12
Joined: Tue. Jan. 21, 2014 12:50 pm
Hot Air Coal Stoker Stove: Econo
Coal Size/Type: Rice

Post Wed. Jan. 22, 2014 6:52 am

I see . Thanks Mac how were your pipes buried and insulated. I'll try to get the calculations on heat loss done this week, I must admit the calculations are a bit more in depth than I was expecting .but the need for consolidating my various heating problems is growing with each cold day we have.

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Rob R.
Site Moderator
Posts: 11356
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 Wed. Jan. 22, 2014 7:06 am

How is the shop currently heated? Do you know how much fuel it burns presently?

Do you need a UL-approved or ASME approved appliance? If you don't plan on telling anyone that you are installing a coal boiler it probably doesn't matter, but it is something to keep in mind.

Recently I was reading on a different forum and one guy had run pex tubing in a trench and had a local spray-foam installer spray the tubing and put 12" or so of foam in the trench. It was a lot more cost effective than thermo-pex, and probably performs very well.

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Sting
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Posts: 2967
Joined: Mon. Feb. 25, 2008 4:24 pm
Other Heating: OBSO Lennox Pulse "Air Scorcher" burning NG
Location: Lower Fox Valley = Wisconsin

Post Wed. Jan. 22, 2014 7:17 am

Rick 386 wrote:
Petron wrote:<snip>.... so it can run for several weeks un attended if necessary ....I hope :D
No coal unit will run several weeks unattended. Or should be left unattended. At the very minimum, the ashes will need to be removed unless you would build it over a pit.

But do get that heat loss calculation done. That is the first step to decide what unit may be able to handle the job for you.

Rick
Image
When you turn your boiler on -Does it return the favor?
I have finally lost my mind. Don't bother to return it. It wasn't working properly anyway!

Pacowy
Member
Posts: 2740
Joined: Tue. Sep. 04, 2007 10:14 pm
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite
Location: Dalton, MA

Post Wed. Jan. 22, 2014 9:34 am

Maybe this should go in a thread of its own, and my apologies if it has been covered elsewhere, but once again we have a situation where a user is asking about boiler sizing, and the guidance being provided is to do a heat loss computation. Above and beyond the numerous reasons why unsatisfactory performance may result from sizing a coal boiler too close to the measured heat loss, doesn't the focus on heat loss overlook the fact that the actual load faced by the boiler is determined by the installed radiation it powers (plus DHW load if applicable)? If years/decades of experience has shown that "x" amount of radiation is needed to produce satisfactory heat, what would be the point of supplying less heat than that? Why is it necessary to introduce the complexity, hidden assumptions and potential situation-specific inaccuracy of a heat loss program when you have simple and reliable empirical data in the form of the amount of installed radiation and the user's degree of satisfaction with its adequacy? The boiler can't deal directly with the load - only with the installed radiation. So why aren't the heat loss computations saved for questions related to the adequacy of installed radiation, and why can't boiler sizing in existing buildings be driven by straightforward computations involving sf of installed radiation (plus any DHW load)?

Mike

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Sting
Member
Posts: 2967
Joined: Mon. Feb. 25, 2008 4:24 pm
Other Heating: OBSO Lennox Pulse "Air Scorcher" burning NG
Location: Lower Fox Valley = Wisconsin

Post Wed. Jan. 22, 2014 10:06 am

Pacowy wrote:why can't boiler sizing in existing buildings be driven by straightforward computations involving sf of installed radiation (plus any DHW load)?

Mike
Your assuming the installed radiation is correct for the load????
When you turn your boiler on -Does it return the favor?
I have finally lost my mind. Don't bother to return it. It wasn't working properly anyway!

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