Which boiler for multiple buildings

Which boiler for multiple buildings

PostBy: Petron On: Tue Jan 21, 2014 9:13 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
Petron
 
Hot Air Coal Stoker Stove: Econo
Coal Size/Type: Rice

Re: Which boiler for multiple buildings

PostBy: Hambden Bob On: Tue Jan 21, 2014 9:17 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:
Hambden Bob
 
Hot Air Coal Stoker Stove: Harman 1998 Magnum Stoker
Coal Size/Type: Rice-A-Roni !

Re: Which boiler for multiple buildings

PostBy: Petron On: Tue Jan 21, 2014 9:41 pm

I live in down east Maine, so it's a bit chilli at times
Petron
 
Hot Air Coal Stoker Stove: Econo
Coal Size/Type: Rice

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Re: Which boiler for multiple buildings

PostBy: Scottscoaled On: Tue Jan 21, 2014 10:10 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.
Scottscoaled
 
Stoker Coal Boiler: EFM 520x4, 350, 700. Van Wert 400 x 2, 800, 1200.
Coal Size/Type: Lots of buck

Re: Which boiler for multiple buildings

PostBy: tikigeorge On: Tue Jan 21, 2014 10:51 pm

Call Keystoker. I have one and it is great!
tikigeorge
 
Stoker Coal Boiler: Keystoker KA-6
Stove/Furnace Make: Keystoker
Stove/Furnace Model: KA-6

Re: Which boiler for multiple buildings

PostBy: Petron On: Tue Jan 21, 2014 10:58 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
Petron
 
Hot Air Coal Stoker Stove: Econo
Coal Size/Type: Rice

Re: Which boiler for multiple buildings

PostBy: Rick 386 On: Tue Jan 21, 2014 11:55 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
Rick 386
 
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

Re: Which boiler for multiple buildings

PostBy: tomcat On: Wed Jan 22, 2014 12:10 am

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

Re: Which boiler for multiple buildings

PostBy: Rob R. On: Wed Jan 22, 2014 5:45 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.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Re: Which boiler for multiple buildings

PostBy: macdabs On: Wed Jan 22, 2014 6:01 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
macdabs
 
Stoker Coal Boiler: AHS 260
Coal Size/Type: Pea
Other Heating: Pellet,oil
Stove/Furnace Make: AHS
Stove/Furnace Model: S260

Re: Which boiler for multiple buildings

PostBy: Petron On: Wed Jan 22, 2014 7:52 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.
Petron
 
Hot Air Coal Stoker Stove: Econo
Coal Size/Type: Rice

Re: Which boiler for multiple buildings

PostBy: Rob R. On: Wed Jan 22, 2014 8:06 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.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Re: Which boiler for multiple buildings

PostBy: Sting On: Wed Jan 22, 2014 8:17 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
Sting
 
Other Heating: BurnHAM=NG-gas

Re: Which boiler for multiple buildings

PostBy: Pacowy On: Wed Jan 22, 2014 10:34 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
Pacowy
 
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite

Re: Which boiler for multiple buildings

PostBy: Sting On: Wed Jan 22, 2014 11:06 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????
Sting
 
Other Heating: BurnHAM=NG-gas

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