New life for a 1980 DF520

New life for a 1980 DF520

PostBy: Rob R. On: Mon Jan 14, 2013 10:22 pm

Just finished the install of a 1980 DF520 in my brother's house. Four zones of baseboard in the house, radiant heat in the basement floor. ~4000 sq. ft total, running buck size coal through a 60" auger pipe...no coupling. 7 gpm coil, "Fuel Smart" Hydrostat for the aquastat...adjusts the boiler temperature based on load. Seems to be working very well so far. Many thanks to Dave O'Neil and forum member Pacowy for the boiler.
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Last edited by Rob R. on Tue Jan 15, 2013 2:23 am, edited 1 time in total.
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: New life for a 1980 DF520

PostBy: KLook On: Mon Jan 14, 2013 10:49 pm

How about a little tutorial on how you used the hydrostat and how it is set up to adjust the temps. How did you calculate the temp difference per load? I went to the website but it was not very informative about the unit.

Kevin
KLook
 
Stoker Coal Boiler: Harman VF 3000
Coal Size/Type: rice, bagged, Blaschak
Stove/Furnace Make: Harman (Back In Maine)
Stove/Furnace Model: VF 3000

Re: New life for a 1980 DF520

PostBy: Rob R. On: Mon Jan 14, 2013 10:52 pm

I just followed the directions and set the # of zones to 5. The big thing is setting the jumper switch to "I" for indirect...that allows a ZR signal (timer) to bypass the economy feature and run normally.
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: New life for a 1980 DF520

PostBy: KLook On: Mon Jan 14, 2013 10:58 pm

By that you mean the idle timer operation? I assume the unit is somehow settable for the temp at 1 zone, 2 zones, etc. Otherwise how would it know what is the correct temp unless the loads were always made the same. In all situations.

Kevin
KLook
 
Stoker Coal Boiler: Harman VF 3000
Coal Size/Type: rice, bagged, Blaschak
Stove/Furnace Make: Harman (Back In Maine)
Stove/Furnace Model: VF 3000

Re: New life for a 1980 DF520

PostBy: Rob R. On: Mon Jan 14, 2013 11:01 pm

It has an adjustment for the "economizer" setting...they recommend you set the dial to the number of zones in the system...6 is the max. I guess it keeps track of how many heat calls there are and how long they last...and how the boiler temperature reacts.
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: New life for a 1980 DF520

PostBy: KLook On: Mon Jan 14, 2013 11:06 pm

Ahhhh, so it kind of learns abut the loads of each zone? Wow, that would be great. I wonder how it works with the outdoor reset unit? I will have to explore that some more. So far, the info online is terrible.

Kevin
KLook
 
Stoker Coal Boiler: Harman VF 3000
Coal Size/Type: rice, bagged, Blaschak
Stove/Furnace Make: Harman (Back In Maine)
Stove/Furnace Model: VF 3000

Re: New life for a 1980 DF520

PostBy: Scottscoaled On: Mon Jan 14, 2013 11:21 pm

That's a nice install Rob! Sweet looking boiler :D
Scottscoaled
 
Stoker Coal Boiler: EFM 520x3, 700 Van Wert 800
Hot Air Coal Stoker Furnace: EFM 150, Keystoker 150
Coal Size/Type: Lots of buck

Re: New life for a 1980 DF520

PostBy: Berlin On: Tue Jan 15, 2013 3:05 am

very nice, clean install Rob!
Berlin
 
Hot Air Coal Stoker Furnace: Will-Burt Combustioneer 77B
Coal Size/Type: Ohio BITUMINOUS pea stoker coal

Re: New life for a 1980 DF520

PostBy: 331camaro On: Tue Jan 15, 2013 6:31 am

nice work rob. got the whole family burnin coal now?
331camaro
 
Stoker Coal Boiler: Keystoker k6
Coal Size/Type: rice

Re: New life for a 1980 DF520

PostBy: Rob R. On: Tue Jan 15, 2013 7:04 am

331camaro wrote:nice work rob. got the whole family burnin' coal now?


Immediate family is officially converted...plus one uncle. This install was a little different since there is no oil or propane boiler in the system, it is coal only.
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: New life for a 1980 DF520

PostBy: lsayre On: Tue Jan 15, 2013 7:14 am

Beautiful boiler and install!!! A-1 work there Rob!
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Stockton Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW)

Re: New life for a 1980 DF520

PostBy: freetown fred On: Tue Jan 15, 2013 8:08 am

Ain't it grande working in new construction & being able to do exactly what you need/ want to do. :D
freetown fred
 
Hand Fed Coal Stove: HITZER 50-93
Coal Size/Type: BLASCHAK Nut/Stove mix

Re: New life for a 1980 DF520

PostBy: Phil May On: Tue Jan 15, 2013 10:24 am

Nice neat and clean install.
Phil May
 
Stoker Coal Boiler: EFM 700
Coal Size/Type: Buckwheat
Stove/Furnace Make: EFM
Stove/Furnace Model: 700

Re: New life for a 1980 DF520

PostBy: MATTHEW D. On: Tue Jan 15, 2013 8:12 pm

Nice install Rob!!!! I like the coal pipe with no coupling. Throw some coal dust around that basement....too clean....... :lol:
MATTHEW D.
 
Stove/Furnace Make: AXEMAN-ANDERSON & EFM
Stove/Furnace Model: 130 & 900 x 2

Re: New life for a 1980 DF520

PostBy: lsayre On: Tue Jan 15, 2013 8:17 pm

Rob, might i ask where you got the stainless steel flue pipes?
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Stockton Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW)