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Posted by marson on February 2, 2008, 4:35 am
> Why do you want to drain the boiler? Because of the rusty water. You should
> only drain the boiler for repair work that requires draining. New water will
> introduce fresh oxygen that will create new rust further corroding the
> metal. Old rusty water has used up the oxygen and no longer corrodes.
>
>
> > What do you think of trying to capture the rust in the boiler by placing a
> > strong permanent magnet near the boiler drain? Remove the magnet and then
> > drain.
>
> > John
I don't know but I doubt it. The only iron oxide that is magnetic is
magnetite, and that isn't what forms in your hydronic heating system.
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