outdoor wood furnace
- Thread starter wlf89
- Start date
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I have a Central Boiler in mild steel. The dealer did not really recommend the stainless models. He made a good point about many commercial boilers out there over 50 years old and still working, made of mild steel. The CB has a 25 year warranty as long as you maintain the stove to their spec.
Basicly do not burn garbage, treated wood, plywood etc. Burn only clean dry firewood, as in trees. Keep the water chemistry within spec, and for good measure use their ash control product to help with acidity. Do not let the stove set over the summer with ash in it.
These things are just not that difficult to do. My stove is now going into the 6th season and it still looks like new. No signs of corrosion or wear.
Plus the carbon steel is said to be a better transferer of heat to the water and thus offer more effeciency.
Basicly do not burn garbage, treated wood, plywood etc. Burn only clean dry firewood, as in trees. Keep the water chemistry within spec, and for good measure use their ash control product to help with acidity. Do not let the stove set over the summer with ash in it.
These things are just not that difficult to do. My stove is now going into the 6th season and it still looks like new. No signs of corrosion or wear.
Plus the carbon steel is said to be a better transferer of heat to the water and thus offer more effeciency.
flyingcow
Veteran Member
If you got time, check out Hearth.com - Information on Gas Fireplaces, Wood Stoves, Gas Logs, Pellet Stoves, Fireplaces, Chimneys and Hearth Products go to the bulletin board. OWB have changed in the last few yrs. EPA rules have screwed them up. There are other options.
Larry Caldwell
Elite Member
Get one with tubes, not just a water jacket. Enclosing the firebox in a water jacket means the fire never gets hot enough to burn the fuel efficiently. You will burn way too much wood and pollute the whole area. Minimum firebox temperature for good wood fire efficiency is about 600 degrees, which is where the creosote starts to burn.
An efficient wood furnace will burn the wood in a firebox and then pass the hot stack gasses through heat transfer tubes that are surrounded by water. Alternatively, the hot gasses will pass around heat transfer tubes that are filled with water. The second option allows installation of a wiper that will scrape creosote off the tubes and keep the heat transfer efficiency up.
An efficient wood furnace will burn the wood in a firebox and then pass the hot stack gasses through heat transfer tubes that are surrounded by water. Alternatively, the hot gasses will pass around heat transfer tubes that are filled with water. The second option allows installation of a wiper that will scrape creosote off the tubes and keep the heat transfer efficiency up.
flyingcow
Veteran Member
I put an indoor gasification boiler in my garage. An OWB, 100 gals of oil= 1 cord of wood. What I have 150gals of oil = 1 cord of wood. Should be able to push that to 175gals to a cord of wood.
magicheater
Veteran Member
I agree with you, the more firebrick the better! I have a Seton Boiler with a 5" cast refractory lining and water tubes and is very responsive. I only burn it 8-10 hours a day on the coldest of days. Very little smoke out of the chimney. It is no wonder the water jacket variety that smolders 1/2 the time has been zoned out of municipalities.
if you guys dont mind take a look at this one and see what yall think about it i dont know much about these
http://www.nextlevelsolutionz.com/
http://www.nextlevelsolutionz.com/
tulenutn2o
Platinum Member
Not worth the money. Easy to build this one. Old school tech. Buy a 2010 epa approved model and shouldn't have to worry about making you remove it down the road........One hopes.
catdoo
Member
flyingcow
Veteran Member
Alternative Fuel Boilers - wood burning boilers
Look at their outdoor units. It's a gasification boiler. It'll be pricier in the beginning, but in the long run, you'll burn less wood. No smoke!! No joke. I have another brand of gasifiction boiler, and i light it off in the summer, a little smoke in the 1st minute or 2, but after that, smoke is not noticeable. You will burn a 1/3 to almost 1/2 the wood comapered to a typical OWB.
Look at their outdoor units. It's a gasification boiler. It'll be pricier in the beginning, but in the long run, you'll burn less wood. No smoke!! No joke. I have another brand of gasifiction boiler, and i light it off in the summer, a little smoke in the 1st minute or 2, but after that, smoke is not noticeable. You will burn a 1/3 to almost 1/2 the wood comapered to a typical OWB.