520 Boiler Foundation

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Posts: 32
Joined: Sat. Feb. 25, 2012 7:51 pm

Post Sun. Oct. 27, 2013 3:15 pm

what is the correct way to be setting the boiler on. I see some on blocks and other on a slab. my boiler is a 1965 efm 520 round door , with that boiler I should have the option of three locations for the feed screw correct?

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Rob R.
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Posts: 11501
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 Sun. Oct. 27, 2013 4:37 pm

4" concrete blocks work very well...one at each corner.

The stoker can go on the left or right, but not on the front.

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Posts: 329
Joined: Wed. Oct. 22, 2008 8:27 pm
Stoker Coal Boiler: EFM 520
Location: Bennington, VT

Post Sun. Oct. 27, 2013 6:30 pm

If you have room in your cellar and a smooth, level floor you can use a skid system.

You would never have to manually lift coal.

In order to use a skid system, with a floor auger box with removable skids with shutters and bulk bags, you must use blocks no taller than 1-7/8". This gives you the proper room for the auger to fit under the skid. EFM is the only boiler with a low enough auger angle to do this. You are lucky to have an EFM.

You would need 21 concrete blocks, 3" x 6" x 1-7/8". Home Depot sells them.

The other advantage of the skid system is you never have to worry about a blocked auger. Just close the skid gates, lift the skid off and fix the problem should it ever happen.

Click on blue link below.

EFM 520 Install With Skid/Bulk Bags Feed

Mark (PA)
Posts: 383
Joined: Thu. Feb. 28, 2008 9:40 am
Stove/Furnace Make: 1953 EFM SF-520 High Boy
Stove/Furnace Model: Fitzgibbon Boiler
Location: South Central, PA

Post Tue. Oct. 29, 2013 8:19 pm

Also using 4" concrete blocks for my base...

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