Outdoor Wood Furnace Info
Outdoor Furnaces - Manufacturers WITH EPA-Certified Models => Central Boiler => Topic started by: muffin on September 08, 2011, 01:29:00 PM
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The documentation calls for this valve to be installed on the main feed lines from the boiler. What is the function of this valve? I have not been able to find one either, any good sites that carry them? I assume it allows the hot water to cycle back to the furnace. Presummably if the return gets to cold. I read something about the return not being below 150 or it can cause the system to condensate. Seems kind of high. I would have expected the temp to drop more then 30 degrees as it is used.
All I see around are the mixing valves which seem a bit different. They are for cooling the water, not heating it!
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http://outdoorwoodfurnaceinfo.com/forum/index.php?topic=1061.0 (http://outdoorwoodfurnaceinfo.com/forum/index.php?topic=1061.0) Enjoy!!
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If you have just bought the stove there is one wired up under the furnace if you need another go to your CB dealer they have them or can get one for you.
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If you have just bought the stove there is one wired up under the furnace if you need another go to your CB dealer they have them or can get one for you.
Thanks, I looked around and did not see it. Ended up calling them and sure enough it was tucked up behind the electrical box. Even knowing where it was I had to remove the front cover to really see it and get access to it. One would think they could put it somewhere a little more obviouse. Anyway, it is installed now.
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I didn't hook mine up until Labor day weekend to my 6048. I installed it on my pool heat loop and I'm glad I did. It definately needs it on there. I never had a problem heating my house and garage to need it to keep the water temp up.......pool......different story.
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Yeah, I got mine installed onthe main lines right as it comes into the house. I could definately feel it working when I first fired the furnace up as it did not allow any hot water to cycle through the house until it got above 150F. I think this will be good reguardless since it will basically shut down the house if the load becomes to great for some odd reason. I have a lot of loads, so if they all kick on at the same time I could probably cool the water to 70F or whatever the house ambient is. Neat device, but horribly unlabeled. No arrows or labels at all. I just used the picture in the manual to identify supply/return in and outs. Seems odd, you would think they would stamp that into the metal or something.
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Agreed! Very poor install info. Only after the initial install did I figure it was hooked up correctly, even though the dealer installed it. (also used the manual)
I actually would like more info on it. In case you need to change the "guts" on it in the future.
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I dont know anything about this valve. What does it go and does it save wood?
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Past discussions guessed that CB is using this valve to maintain higher OWB temps to help reduce creosote. I think (After reading other articles on this site) to help cook out the oxygen* in the water.
*=in other words once the oxygen is cooked out at about 180F, it stays out unless the water drops below 140F. The thermostatic valve helps prevent this since it's setting is 150F. (non adjustable)
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It works like a thremostat in your car. the water has to be a certin temp befor it can start heating the inside of your car
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seem to me the stove would burn more wood. right?
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I think how much a wood stove burns really depends on quality of wood and heat load. I'm averaging 6 pieces a day.
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I dont know anything about this valve. What does it go and does it save wood?
I was told, and it is in the manual that it is for corrosion. If the returning water is too cold it can cause the firebox to condensate and then rust. This makes sure the returning water is never below 150F so it will not condensate. It is installed on the main line. Mine is right as it comes into the house. I suppose you could put it out on the furnace side as well, doesn't really matter. It just has to be on the main feed so there are no ways around it. It makes for a nice radiator in my utility room. Should keep it from getting too cold in there this winter. This is also my pump room for the pool so that is a good thing.
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It should not really affect wood burn. Perhaps actually reduce it as it bassically will shut down your house if you try to pull too much heat. Think of it as a heat limitor. But in essence, it will just draw out the duty cycle of your heating so I think the wood consuption will be the same.
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i am not sure but from what i am reading this valve will prevent water from moving in the system if teh OWB drops below 150 degrees? If this is true then you can not count on your indoor furnace kicking in and keeping your OWB frm freezing by back feeding your OWB through your heat exchanger in the plenum of your indoor furnace?
i dont have this valve on my home built and when i forget to go ut and feed the stove at night (sometimes happens to use humans) i wake up to a warm house and go out to find my OWB is sitting at 80 degrees. If i had that valve (i am guessing again as to how it works) my indoor furnace would have kicked in through the night and my OWB would be sitting some where just under 150?
if i am reading this valve thing right.....i like not having one
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The valve is like your car thermostate in reverse once the water temp drops below 170 the valve starts to close as the water gets to 150 it completly closes and loops the water back to the boiler to maintain 150 in the owb. The line from the valve to your heat exchanger goes cold until the water temps starts to rise ( firing the furnace) In the mean time you get a cold house and/or a gas bill as the back up kicks in to maintain house temps.
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The thermostatic valve is for protecting your furnace from condensation and corrosion.
My dealer NEGLECTED to install it, until I mentioned it. THEN he installed it.... He mumbled something about condensation....I have no idea... The furnace handbook states that it MUST BE INSTALLED!
or forget your 25 year warranty....