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Posted by rbeck on November 02, 2008 at 18:47:29:
In Reply to: Re: HOW LONG DOES IT TAKE FOR OXYGEN TO BOIL OUT posted by HeatPro on October 31, 2008 at 21:05:10:
You may not bleed all the oxygen out but if you have no leaks on the lower pressure areas and no auto vents on the return side or high points of the system you will ecome oxygen free. What does not get out will cause corrosion and use up the oxygen. The system will become oxygen free if no leaks.