Here are some pictures of the final installation of my outdoor wood furnace/ boiler.




The furnace was placed on a concrete pad about 130 feet away from my house.
I buried the insulated pex lines along with a run of 14/3 direct burial insulated wire about 30" deep all the way from the wood furnace to the house.
Next I had to drill a 5" hole through the foundation with a core drill. I had to also use an extension to get through my 22" rock walls. Total time to setup, bolt the drill to the wall and drill the hole was about 2 hours. Picture 1 shows the lines coming into the house.
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All we needed to do to hook up the outdoor furnace to the indoor furnace was to make two loops connecting to a heat exchanger. One line of each loop was hooked up to a circulating pump. You can see the pumps in picture 3. The smaller line coming down in the middle is just a cold water supply which can be turned on to fill or top off the outdoor furnace. We also installed a switch to turn off the pumps easily.
To enter the oil boilers loop we went through the back of an existing flow check and installed another flow check. Picture 4.
We exited the loop through the oil boilers existing drain valve and then added another drain valve. Picture 5
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Here is a picture of my old oil burner. It works fine but it is an oil guzzler. It uses almost 300 gallons of heating oil per month. When we installed the outdoor furnace we set a seperate thermostat to fire the oil burner when the house temperature drops below 60 degrees. That way if we go away or if the fire goes out we still can use the oil furnace.

Picture 4

Picture 4
line from furnace to heat exchanger

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Picture 5

Picture 5
Continuation of loop from heat exchanger to furnace