Sharp Dressed Highboy

Re: Sharp Dressed Highboy

PostBy: Rob R. On: Mon Feb 20, 2017 6:53 pm

Based on a my experience with a few EFM's using a flue shared with an oil boiler, there is no reason to hook them up any differently than a second oil boiler...other than the code that treats stoker boilers like a wood stove, which I find ridiculous.
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: Sharp Dressed Highboy

PostBy: Sunny Boy On: Tue Feb 21, 2017 12:21 pm

I'm not sure why a shared flue with different fuels is not allowed, but you can share a flue using the same fuel is ok. All the examples I 've seen of that rule don't explain why. I like to be able to find the reasoning behind it, like I found with how they rate stove's and stove pipe's the allowable distance to combustibles.

Paul
Sunny Boy
 
Hand Fed Coal Boiler: Anthracite Industrial, domestic hot water heater
Baseburners & Antiques: Glenwood range 208, # 6 base heater, 2 Modern Oak 118.
Coal Size/Type: Nuts !
Other Heating: Oil &electric plenum furnace

Re: Sharp Dressed Highboy

PostBy: ben On: Tue Feb 21, 2017 6:33 pm

Question. Is the highboy designed to have more boiler water content? I don't think they make them anymore.
ben
 
Stoker Coal Boiler: EFM 350 with an S-20 pot (1966)
Coal Size/Type: Rice

Re: Sharp Dressed Highboy

PostBy: Pacowy On: Tue Feb 21, 2017 8:30 pm

Yes, more boiler water and greater heat exchange surface. I don't think they've been made since the 1950's.

Mike
Pacowy
 
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite

Re: Sharp Dressed Highboy

PostBy: Rob R. On: Wed Feb 22, 2017 7:26 am

ben wrote:Question. Is the highboy designed to have more boiler water content? I don't think they make them anymore.


The boiler itself was made by Fitzgibbons Boiler Company. I think it holds about 13 gallons more water than a regular 520. Maybe if you were running the stoker really hard the larger boiler would have an advantage, but heating a house on 4/5 teeth is a pretty easy task for any EFM. I could have just as easily put a 350 in dad's house and had heat to spare.
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: Sharp Dressed Highboy

PostBy: franpipeman On: Wed Feb 22, 2017 9:04 am

So I assume the high boy is a tubed boiler ? since its fitzgibbons?
franpipeman
 
Stoker Coal Boiler: efm 520 stoker fitzgibbons pressure vessel
Hand Fed Coal Stove: harman, russo
Coal Size/Type: rice
Other Heating: alpine propane condensing boiler radiant floor

Re: Sharp Dressed Highboy

PostBy: Pacowy On: Wed Feb 22, 2017 9:36 am

Yes, they are tube boilers. All else equal the larger heat exchange surface promotes efficiency, though the larger size of the boiler may also contribute to greater stand-by losses. The larger reservoir of hot water in the boiler also can be beneficial for DHW production, etc.

Mike
Pacowy
 
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite