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Old 06-16-2010, 10:42 AM   #1
brokentoy
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Default Efficient Heat! Seton Wood Boiler

After extensive research and speaking with people smarter than me, I decided to go with the Seton 130k BTU wood boiler. This will supply domestic hot water as well as the hot water for the radiant flooring system in our new house. We bought ours from WoodHawk up in FBX, who has installed hundreds of them all over the state. They are the most efficient wood boilers around and can be installed with 12" clearance in the garage. The guy in FBX uses one in his 3000sf cabin and burns about 6-7 cords a year.

Going to rough in capability to run the radiant floor circulating pumps off of solar to make it a truly self supporting system. Will also have a 32gal Bock oil fired water heater which will kick on as a backup to keep the house warm if we go on vacation or forget to feed the stove.

Blurb from the Seton website, ROHOR.COM:



HOW IT WORKS


This boiler is the result of an extensive three year R&D project completed over thirty years ago. First we discovered that the heavier tars and creosotes start burning above 1200 and steel starts to break down at 800. This is the reason steel wood stoves burn dirty and do not last long. If you surround the fire with a steel fire box and water you remove the combustion heat before it reaches the temperature necessary for a clean burn. We burn the wood in a six inch thick refractory fire chamber surrounded by three inches of high temperature insulation and an airtight steel skin. The fire box temperature exceeds 1800 and the skin temperature is less than 100. Then we use a water tube pressure vessel to remove both radiant and convective heat. The heat must travel down past the vessel to the exhaust port heating the incoming combustion air on the way. The exhaust temperature is below three hundred degrees. Once the fluid reaches the set temperature the draft is closed and the fire is completely extinguished, it does not smolder. Because the thermal mass in the refractory stays above the flash point the fire always re-ignites when the boilers calls for heat again.
We manufactured over 1500 of these boilers twenty years ago, no one has ever reported any creosote or having to clean a chimney.
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Last edited by brokentoy; 09-25-2010 at 01:16 PM.
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