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Heating Return Manifold Question

JMGotts Member Posts: 5
My son sent me a pic of his configuration while troubleshooting a zone issue. On a 4 zone config with a common return manifold, there is an extra zone valve installed in the main feed return to the boiler. If you picture a kitchen fork standing upright, the 4 zones would be the tines, the handle the common return. I don’t understand that zones purpose and additionally, its installed with the valve facing the return flow direction. The other 4 are opposite direction.
Give me a clue please.
Interpret how I say it, not how you think it.


  • Ironman
    Ironman Member Posts: 7,119
    Got any pics?

    What you're describing makes no sense to me either.
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • Zman
    Zman Member Posts: 7,446
    Could you post the photo he sent?
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • JMGotts
    JMGotts Member Posts: 5

    Interpret how I say it, not how you think it.
  • mattmia2
    mattmia2 Member Posts: 7,732
    I think that is the zone valve for the indirect water heater but i can't see where it goes from that pic.

    I have some questions about pitch and clearances on that vent.
    rick in AlaskaSuperTechIronman
  • JMGotts
    JMGotts Member Posts: 5
    Haven’t seen it first hand yet.
    Interpret how I say it, not how you think it.