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4 way mixing valves

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Ted_9
Ted_9 Member Posts: 1,718
in THE MAIN WALL
I recently noticed that Buderus shows a circulator on the return back to the boiler, leaving the 4 way. Viessmann does not. I believe the controls act very similar in these instances so why the difference?




Massachusetts

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  • Brad White
    Brad White Member Posts: 2,399
    My guess is

    it makes no difference. The 4-way is at once a mixing and diverting valve. I have seen Centra (Honeywell) systems set up both ways both in the field and diagrammed.
    "If you do not know the answer, say, "I do not know the answer", and you will be correct!"



    -Ernie White, my Dad
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