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Old 10-13-2011, 10:29 PM   #1
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too much air in my system


My system is app. 22 yrs old electric hot water with a wood fired add on I heat my domestic hot water when buring wood . It is a great system heats 3000 sq ft. Problem is air in pipes I have tryed everything to elemate this .Last year I replaced my electric furance and instaled a new circrulator pump. I am wondering if the seals on the other pump could suck air and not leak when in operation. there has to be some place for the air to get into this system ther is simply too much gitting in. I can blead my pipes and in a couple of weeks it is just as bad. There are no water leaks anywhere. thanks Tom

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Old 10-14-2011, 05:04 AM   #2
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too much air in my system


Do you have air eliminators/purgers in your system? If you do make sure they are on the discharge side of your circulating pump. I had a similar problem and found the cause to be an air purger on the suction side of the pump allowing air to be sucked in.

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Old 10-14-2011, 11:35 PM   #3
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too much air in my system


Really,really,really suggest you get and install a Spirotherm spirovent.Installed properly and it will solve your problem.
I have installed them and they work.
You should probably still search for where the air is coming from.The two usual places would be a faulty air vent or you are losing water and the new water has air in it.
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Old 10-15-2011, 12:19 PM   #4
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too much air in my system


might not consider this but if you have the hot water running along cold walls in the winter the shock can give you air being produced within the system...you right on how is air getting in without leaking out...its not the air is in the water.neighbor had banging hot water old fashion case oiron rads told him to slip insulated sheet of foiled styrafoam in the back of the rad and no more knocking or bleeding...and no i wasn't smoking gonegha
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Old 10-15-2011, 12:47 PM   #5
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too much air in my system


Quote:
Originally Posted by cfkso View Post
My system is app. 22 yrs old electric hot water with a wood fired add on I heat my domestic hot water when buring wood . It is a great system heats 3000 sq ft. Problem is air in pipes I have tryed everything to elemate this .Last year I replaced my electric furance and instaled a new circrulator pump. I am wondering if the seals on the other pump could suck air and not leak when in operation. there has to be some place for the air to get into this system ther is simply too much gitting in. I can blead my pipes and in a couple of weeks it is just as bad. There are no water leaks anywhere. thanks Tom
Hello and welcome cfkso to the best darn DIY'r site on the web.

If you don't have any auto air vents you will need to add them, as with all hot water generators (boilers) you are seeing the effects of what is know as "Nucleate boiling" a normal reaction on the surface of the tubing within the generator/boiler.

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