Outdoor Wood Furnace Info
All-Purpose OWF Discussions => General Outdoor Furnace Discussion => Topic started by: atvalaska on August 21, 2017, 03:43:16 PM
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I have a shop, then up/out to my odf shed 60' the from the odf shed 70 ' to the house......? Is can I put just put the oil boiler in the shop a nd tie into those lines with tee's and check valves valves and call it good ....keep the wood stat a bit higher than the oil..I should be good ...huh?
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I think aqua- therm does some pressurized wood boilers? Is this one pressurized? If not I would separate the two systems with a flat plate.
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Pressurized ! I just want to /tee in /and a couple swing checks and I will toss on another pump at the oil boiler.
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Yes, then you should be able to pump out of the oil boiler through the outdoor furnace . I would use a spring check to prevent convection or reverse flow rather than a swing check. I saw a broken one once and I think quick changes in flow can break the flap.
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Yes Aqua Therm was a pressurized boiler but I have seen several that simply removed the pro and run it open to the atmosphere. ATV, are you planning to run your oil boiler as a backup system?
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Yes, I would like the wood boiler to run right Thur my oil boiler with the pumps running like they do anyway..but when my "fire" goes low the oil boiler will just fire up / take over ....and in turn the water would heat up and shut the aqsta/fans/blowers down on the wood boiler....here is a pic of my set up in my shop my review at pex supply...( before I hooked up the odds and ends) http://www.supplyhouse.com/Taco-I100T4R-1-1-4-Way-Outdoor-Reset-I-Series-Mixing-Valve-Threaded AND I drew this off that photo!
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Here's a birds eye view...
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Not meaning to offend you my friend, I guess I have been doing a lot of that lately but we really need to work on your drawing skills OK.
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Could you just tie it in to the OWB system as a secondary loop?
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Being that it originally was built as a pressurized unit then yes it could be tied directly to the oil boiler BUT if the wood boiler has been depressurized (which for safety sake it should be) then that boiler that he is hooking it to is a very high end cold start boiler, by depressurizing it and running it as a backup, say goodbye to any warranty, not a cheap boiler either! Best bet in my opinion, do it right and do it once!
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Install a flat plate between the two and keep em separate, then you can run the recommended treatment in both of them without mixing. Unless of course they both recommend the same?
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Yeah, I wouldn't depressurize the oil boiler, either use a flat plate or keep it all pressurized
Like RSI said, should be able to pump from boiler to boiler as a secondary loop.
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Here's a question for you Eldon, why not simply pressurize the outdoor wood boiler?
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Here's a question for you Eldon, why not simply pressurize the outdoor wood boiler?
That's what I meant to say. Obviously there's a potential safety issue there with wood and pressure. But aqua-therm has done it for years??
Unless it has a dump zone plumbed in. What I was emphasizing is to not depressurize the oil boiler.
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Well I must admit, that was a bit of a trick question, in my humble opinion an outdoor wood boiler should never be pressurized, yes it has been done BUT remember that if those relief valves fail to open and the boiler goes to steam, 1 gallon of water makes 800 gallons of steam, at that point there is a bomb in your back yard. Indoor units can be pressurized as long as they have a true, non powered dump zone, most require a minimum of 20% of the rated heat output for a non powered dump zone!
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I've never done pressurized and don't plan to, just making sure I understood your question.
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My boilers pressurised …...works fine back to what I started with...can I just tap into the lines add a couple check valves and call it good?
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Yes but I'm not sure why you want check valves, simple ball valves would be fine for isolation and most circus today come with an internal flow check.