EFM - Efficiency

Stoker Coal Boilers automatically feed the coal and have controls and pumps just like any conventions boiler. They are intended to be used as a primary heat and often have domestic hot water coils as an added bonus. They can be set up independently or in dual sytem with your existing oil/gas boiler. They can accommodate both hot water base board or steam plumbing.
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Rob R.
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Posts: 11343
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 Tue. Mar. 19, 2013 9:19 pm

coal_over_oil wrote:Good evening. Should the return always be in the back of the boiler? A guy I work with told me his return is coming in the top of the boiler. I don't think that is correct is it?
TY
That is not common, but the old GE down-draft oil boilers were often piped that way.

AKHEARTH
Member
Posts: 44
Joined: Thu. Oct. 23, 2008 6:37 am
Stoker Coal Boiler: EFM 520

Post Tue. Mar. 19, 2013 10:15 pm

Thanks Rob. The EFM manual show the pumps on the return in the back.
I think I will try to video and take some pictures tomorrow and get them posted.

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User avatar
Rob R.
Site Moderator
Posts: 11343
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 Tue. Mar. 19, 2013 10:18 pm

There are reasons to have the pumps on either side, but for most residential systems with a functional air eliminator it doesn't make a noticeable difference.

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