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Water heating when House heating on

  • 16-01-2024 11:47am
    #1
    Pat201
    Registered Users, Registered Users 2 Posts: 153 ✭✭


    Hello

    I am in a 3 Year old house. I just noticed that when I have heating on downstairs it is also heating up the water. House is 3 Zone so can heat downstairs , upstairs and water separately. I am wondering if water heating up when another zone is active is normal or not. What could be the reason if this is not normal. Currently today my water is at 67 degrees as i had the heating on downstairs.

    Pat



Comments

  • #2
    10-10-20
    Registered Users, Registered Users 2 Posts: 8,062 ✭✭✭10-10-20


    Hi! No, not normal. See can you find the zone valves for each zone, EPH or Honeywell branded usually. The hot water zone valve should be unlit or off/closed by default when another zone is open. Maybe a stuck valve or just wired wrong.



  • #3
    Wearb
    Moderators, Home & Garden Moderators Posts: 6,378 Mod ✭✭✭✭Wearb


    As above plus make sure hotwater zone valve is not manually open.

    Please follow site and charter rules. "Resistance is futile"



  • #4
    Pat201
    Registered Users, Registered Users 2 Posts: 153 ✭✭Pat201


    Thanks Folks. I made sure the valves were on Auto. Turned on each and lights came on all except water valve ( maybe because water too hot at moment) i will check again later when water below 60 degrees



  • #5
    Pat201
    Registered Users, Registered Users 2 Posts: 153 ✭✭Pat201


    20240116_145101.jpg

    Does this look a correct setup? Up and down valves are self explanatory but not sure what M/H is. Im assuming water since i only have 3 valves



  • #6
    Wearb
    Moderators, Home & Garden Moderators Posts: 6,378 Mod ✭✭✭✭Wearb


    MH is probably HW upside down 😄

    Please follow site and charter rules. "Resistance is futile"



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  • #7
    10-10-20
    Registered Users, Registered Users 2 Posts: 8,062 ✭✭✭10-10-20


    https://www.boards.ie/discussion/comment/121624252#Comment_121624252

    Yes, that's the correct setup.

    Does the H/W valve make a whirring sound when you manually move the lever to the open position and let it click back closed?



  • #8
    Pat201
    Registered Users, Registered Users 2 Posts: 153 ✭✭Pat201


    It seems too. It feels the same as the other 2 valves. Just tested it again today and when downstairs heating is on it is heating water too. The light does not come on water valve unless I select the water heating. Would that indicate its the valve that is problem rather than electronics

    Easy to swap or a professional job ?



  • #9
    10-10-20
    Registered Users, Registered Users 2 Posts: 8,062 ✭✭✭10-10-20


    https://www.boards.ie/discussion/comment/121635272#Comment_121635272

    Easy enough swap, two screws and 4 or 5 wires.

    Before replacing it, try taking the head off (two screws) and expose the valve head. You can twist it into a closed position and see if the pipe to the tank stops heating.



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