On Mar 2, 2:24*pm, "Ray" wrote:
We have a boiler/radiator system in our six-unit apartment building. We have
been flushing it -- I think it might be called "draw down" -- once a week.

But I get mixed advice on how often we should do this, and how long we
should let it flush each time.

Any guidance welcome.

If its a hot water, not steam system, you dont flush it or you bring
in oxygen.