Reconditioned EFM Stoker Boiler Selection

reconditioned efm stoker boiler selection

PostBy: buddyboy54 On: Mon May 09, 2011 1:01 pm

I have some questions that maybe you could answer for me. I am considering replacing my hand fired van wert coalboiler with a efm automatic stoker, however due to the high cost of a new unit I am considering purchasing a reconditioned boiler.Can you tell me what I should look for in a reconditioned unit?the van wert boiler that I currently have is a bit oversized for my needs ,its rating is 140,000 BTU when burning anthracite.I also have a weil-mclain oil fired boiler connected so the I can use either boilers or both,the oilfired boiler is fired at a rate of 1.25 gph. Any advice that you could offer would be greatly appreciated.
Carl Rice
Stove/Furnace Make: refurbished efm 350 stoker

Re: reconditioned efm stoker boiler selection

PostBy: stoker-man On: Mon May 09, 2011 9:11 pm

Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: reconditioned efm stoker boiler selection

PostBy: Rob R. On: Tue May 10, 2011 6:03 am

Carl, an EFM 350 or 520 will fit your needs. The tankless coil area is a common trouble spot on these boilers. If you go to look at a used one, make sure the coil area is in good shape, or has been properly repaired. Make sure the base isn't badly corroded from sitting on a damp floor, and look through the EFM stoker assembly threads in this forum so you know what parts should be included. Ask the seller what parts have been replaced, and see if they will "bench test" the stoker for you. A common stoker rebuild includes new burner plates, gaskets, gooseneck bushing, burner worm, burner tube, worm bushing, etc. There might be more or less parts required depending on what kind of shape the stoker is in, but that should give you a rough idea. Check the gearbox for tightness and smooth operation, and make sure the fan isn't bent.

Depending on the age of the boiler, there may be one or three baffles. The tube boilers have one cast iron baffle that hangs in the boiler. The plate boilers have two smaller baffles hanging or welded on the heat exchanger, and another baffle hanging at the top. Make sure the baffle(s) are included with the boiler, and not severely warped.
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