How to reconnect a coal stoker along side of the oil burner

How to reconnect a coal stoker along side of the oil burner

PostBy: Joe G On: Thu Jul 10, 2008 8:40 pm

My parents pulled out the EFM coal stoker a few years ago and replaced it with oil. Now with the price of oil are considering reconnecting it. Are there any forum members that can offer suggestions or experience with this? They would like to tie both systems together, but primarily run on coal and keep the oil heater for a backup. Is this possible or does it even make sense? The coal stoker is still sitting in the basement, but I'm sure it would have to be gone over to be sure it's still in good order.

Thank You
Joe G
 
Stove/Furnace Make: EFM
Stove/Furnace Model: DF 520

Re: How to reconnect a coal stoker along side of the oil burner

PostBy: stoker-man On: Thu Jul 10, 2008 9:33 pm

Sure it can be done. You could leave the oil unit intact and run new piping to the heat distribution system or use the aquastat off the oil burner to control the stoker, or even circulate between the stoker and oil unit. I would disable the oil burner with a switch so you don't have nuisance start-ups of the oil burner. I have a switch at the top of the steps to turn on my oil burner when I really need it. A good heating man should be able to set you up. What town do you live in?
stoker-man
 
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: How to reconnect a coal stoker along side of the oil burner

PostBy: Joe G On: Thu Jul 10, 2008 10:15 pm

Thanks for the input. I'm up in the Hazleton area. I'm wondering how big of a job this is and what I'm getting myself into
Joe G
 
Stove/Furnace Make: EFM
Stove/Furnace Model: DF 520

Visit Lehigh Anthracite

Re: How to reconnect a coal stoker along side of the oil burner

PostBy: coaledsweat On: Thu Jul 10, 2008 10:24 pm

Your getting into saving a lot of money and being comfortable this winter.
coaledsweat
 
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

Re: How to reconnect a coal stoker along side of the oil burner

PostBy: stoker-man On: Fri Jul 11, 2008 5:44 am

Joe, Check your PM
stoker-man
 
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: How to reconnect a coal stoker along side of the oil burner

PostBy: coalmeister On: Fri Jul 11, 2008 3:47 pm

I will be doing the same thing this Fall. I plan on hooking in the coal boiler at the return line just before the oil boiler return inlet so the oil boiler will just see nice toasty water and not run. My DHW is off the oil boiler just like another radiator zone so it will be automatic.
coalmeister
 
Stove/Furnace Make: Alaska 140 Furnace -sold
Stove/Furnace Model: Harmon VF3000 -sold

Re: How to reconnect a coal stoker along side of the oil burner

PostBy: Joe G On: Fri Jul 11, 2008 9:55 pm

So how are you planning to handle the exhaust for both furnaces? Will you be disconnecting the oil burner and connecting the coal stoker to the flue or is there a way to use a T connection safely?
Joe G
 
Stove/Furnace Make: EFM
Stove/Furnace Model: DF 520

Re: How to reconnect a coal stoker along side of the oil burner

PostBy: stoker-man On: Sat Jul 12, 2008 12:51 pm

Here is how I tied my wood/coal boiler into my existing oil burner and still able to use all the existing controls that were part of the oil set-up. I was having trouble with the cold water in the pipes, from the wood fire going out, causing my oil burner to start up until both boilers were equalized, so I disabled the oil burner and control it with a switch at the top of the steps. It's a good idea to run it once a month for a few minutes.

Supply hot water from my wood/coal boiler arrives at the oil boiler traveling in the direction shown at point 6. It travels horizontally to the right, behind the pipe shown at point 4, and then down to the bottom of the right side of the oil boiler and enters the boiler. A circulator at the wood/coal boiler is moving the water.

At the top of the picture, at point 1, return water from my heating zones is returning to the bottom left of the oil boiler using a circulating pump mounted at the left base of the boiler.

Some of the return water from the heating loops is forced back into the supply line to my heating loops, using a hand valve. It's called a bypass loop and is shown at point 2.

You can't see it in the picture, but right behind the emergency shutoff switch and to the right of point 4 is the tee where the water exits the oil boiler and either goes back to the wood/coal boiler via the pipe at point 3 for reheating or to the zone valves via the pipe at point 5.

There are two check valves in this piping.
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stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Visit Lehigh Anthracite