help with hooking up efm

help with hooking up efm

PostBy: shy0302 On: Sun Dec 01, 2013 10:05 am

I would like some help and information on hooking up my efm to my Utica boiler, I believe I should connect them so I can run them alone or together, should I circulate from the efm to the Utica constantly? my base board is 3/4 in and the supply and return line from the efm are 1 1/2 in. so I reduce to 3/4 to the base board and return to the 1 1/2 back to the efm. any information will be helpful.
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shy0302
 

Re: help with hooking up efm

PostBy: mattcoalburner On: Sun Dec 01, 2013 10:17 am

you should just take the feed and returns and put a tee in them, if you keep the efm at the right height gravity will circulate the water and you will not need a pump.
mattcoalburner
 
Stoker Coal Boiler: Van Wert
Hot Air Coal Stoker Stove: Reading Juniata

Re: help with hooking up efm

PostBy: Rob R. On: Sun Dec 01, 2013 10:27 am

mattcoalburner wrote: if you keep the efm at the right height gravity will circulate the water and you will not need a pump.


Sorry, but I can't agree with that. Sure, some water will circulate via gravity, but not nearly enough to heat the house. Gravity systems require very large diameter piping, and very specific piping layout...and trying to connect to a system that is already pumped makes it a no-go in my book.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Re: help with hooking up efm

PostBy: Rob R. On: Sun Dec 01, 2013 10:30 am

Can you post a picture of the oil boiler and its piping? Do you use a tankless coil in the oil boiler?
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Re: help with hooking up efm

PostBy: whistlenut On: Sun Dec 01, 2013 10:43 am

Cut in the 't's', ADD unions, AND a set of ball valves. Series or parallel will work, most of us go series. Have the ability to shutoff the flow from the EFM and it is handy to have a drain somewhere in that loop. The unions will provide a quick disconnect and reconnect ability if you have any issues. a hint that works well also, is to use a circulator with an IFC valve already in it. (internal flow check). Taco, Grundfos, and all other brands sell them. Not even 10.00 more. I don't trust the gravity method, however in many cases it works OK. Yes, I leave them running 24/7. All you are doing is maintaining uniform temps in both vessels. Not that you will need one, but this is a great opportunity to add another set of 't's' if you anticipate any other additions to your systems, or a dump zone. Most of the time it is easy to add an aquastat to trigger an already set up zone as a dump zone, but it is cheap to add a couple 't's if you are a guy who plans ahead. You might want to add a garage zone, a basement radiator or modine, perhaps an Indirect Water Heater .....lots of options are then available. Man-cave remote from the house........that would help muffle the Auburn/Alabama last second replays in your future........ :idea:
whistlenut
 
Stoker Coal Boiler: AA130's,260's, AHS130&260's,EFM900,GJ&VanWert
Hand Fed Coal Boiler: Franks Boiler,Itasca415,NYer130,Van Wert
Hot Air Coal Stoker Furnace: Yellow Flame
Hot Air Coal Stoker Stove: Alaska-4,Keystoker-2,
Hand Fed Coal Stove: Alaska,Gibraltor,Keystone,Vc Vigilant 2
Hand Fed Coal Furnace: Van Wert, NYer's, Ford,Jensen.
Coal Size/Type: Rice,Buck,Pea,Nut&Stove
Other Heating: Oil HWBB

Re: help with hooking up efm

PostBy: Rob R. On: Sun Dec 01, 2013 10:50 am

If you want to do something really simple, you can remove the two plugs that I have circled in the picture and connect the EFM supply and return there.

This has a few drawbacks. 1. You will need to run the circulator only during heat calls. If you circulate all the time, it will likely cause gravity flow in your zones. 2. It doesn't isolate the oil boiler.
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Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Re: help with hooking up efm

PostBy: vermontday On: Sun Dec 01, 2013 11:25 am

EFM's are so reliable, I don't see the need to keep your old boiler heated. I just used T's and valves to keep it isolated.

Keeping it warm wastes energy. You wouldn't buy a new truck and drag around the old truck behind it, "just in case".

Your future worry with the EFM is going to be "how long will my oil stay good in the oil boiler burner and oil tank"?
vermontday
 
Stoker Coal Boiler: EFM 520

Re: help with hooking up efm

PostBy: Rob R. On: Sun Dec 01, 2013 11:35 am

vermontday wrote:EFM's are so reliable, I don't see the need to keep your old boiler heated. I just used T's and valves to keep it isolated.

Keeping it warm wastes energy. You wouldn't buy a new truck and drag around the old truck behind it, "just in case".


Your solution is ideal. But is he comfortable re-piping most of the oil boiler while the system is heating the house?
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Re: help with hooking up efm

PostBy: whistlenut On: Sun Dec 01, 2013 12:13 pm

I know of a system that has no oil or propane backup and 10 apartments. First fired on October 27, 1977. (it is AA 260's) If you are worried about the EFM failing, then you are in a VERY small minority. If you lose power.....sure, but nothing short of an auto-transfer generator will be safe. I wonder if anyone has been out in the river today......warm morning......just add the 'Ice Breaker' and full speed ahead......
whistlenut
 
Stoker Coal Boiler: AA130's,260's, AHS130&260's,EFM900,GJ&VanWert
Hand Fed Coal Boiler: Franks Boiler,Itasca415,NYer130,Van Wert
Hot Air Coal Stoker Furnace: Yellow Flame
Hot Air Coal Stoker Stove: Alaska-4,Keystoker-2,
Hand Fed Coal Stove: Alaska,Gibraltor,Keystone,Vc Vigilant 2
Hand Fed Coal Furnace: Van Wert, NYer's, Ford,Jensen.
Coal Size/Type: Rice,Buck,Pea,Nut&Stove
Other Heating: Oil HWBB

Re: help with hooking up efm

PostBy: shy0302 On: Sat Dec 14, 2013 3:27 pm

i could use any information on wiring the high and low temp controles, and how that connects to the auger motor and blower motor on my efm 700.
shy0302