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10 Dec 2002 at 7:55 pm
#293375
Harold Kestenholz
Participant
Either the reverse preventer (flow control) is working so it stops reverse flow or it is not working. some water may flow into the radiant tubing because water flows past it making some mix flow there, but it should not go through and into the other loop enough to heat it if the radiant circulator flow control is working.