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Condensate tank piping?

Mike Member Posts: 94
Come across this piping arrangement for the condensate tank venting. I've never seen this before. Can anyone give a explanation, of what it is to do? Piped
From the header into the vent pipe.


    EBEBRATT-Ed Member Posts: 15,634
    Check valve in that dropped pipe. I believe they are using it for a vacuum breaker. They piped it that way so if the check valve leaks backwards the condensate will go into the condensate pump