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Horstmann channel plus to Tado Smart Thermostat - Urgent Wiring Help

  • 16-01-2024 10:18pm
    #1
    Info_Seeker
    Registered Users, Registered Users 2 Posts: 81 ✭✭


    Hello, My home has Horstmann channel plus h37xl. It's old and the buttons have stopped working.

    To replace it, I have bought Tado Wireless Smart Thermostat V3+. Setting up internet gateway and smart thermostat was easy. I am now trying to setup programmer (failed once) and need help with wiring.

    Horstmann programmer has N, L, 1, 2, 3, 4, 5, 6. Currently wires are in N, L, 1, 2, 4, 6.

    Tado has N, L, CH COM, CH NC, CH NO, HW COM, HW NC, HW NO, Down Arrow Sign, P1, P2.

    CH is for central heating. HW is for Hot water. P is for parking.

    I tried N in N. L in L. 1 in CH COM. 2 in CH NO. 4 in HW COM and 6 in HW NO. But Tado programmer didn't even show power light.

    Currently have 3 zones (2 x Heating, Hot Water). Can live with 2 zones (Heating, Hot Water).

    Really need someone to suggest which wire should go where. It will be a great help! God Bless!

    Horstmann Front.jpg


    Horstmann Back.jpg


    Current Back Plate.jpg


    Tado Programmer.jpg


    Post edited by Info_Seeker on


Comments

  • #2
    ongarite
    Registered Users, Registered Users 2 Posts: 8,373 ✭✭✭ongarite


    Edit: Am editing post a lot as I look at wiring.

    Look through the wiring diagram with the Tado programmer.

    There should be 2 short purple wires in the box.

    Bridge purple wire from L to CH COM and then CH COM to HW COM with other purple wire

    Disconnect the first wire on left, that's ground & move to connection left of parking P1. Then move blue to N and brown to L.

    Do you have 3 zones? Hot water, downstairs & upstairs heating? Tado only supports 2 zones without some creative wiring.

    You could might get both heating working together & HW.

    Both light and dark brown to CH NO and blue to HW NO as is.



  • #3
    Info_Seeker
    Registered Users, Registered Users 2 Posts: 81 ✭✭Info_Seeker



    https://www.boards.ie/discussion/comment/121626597#Comment_121626597

    Thanks @ongarite. I will try this.

    Just to be sure, Horstmann to Tado:

    N (yellow) to Down Arrow

    L (blue) to N

    1 (brown) to L

    2 and 4 (light brown) to CH NO

    6 (blue) to HW NO



  • #4
    ongarite
    Registered Users, Registered Users 2 Posts: 8,373 ✭✭✭ongarite


    Yes plus the 2 purple wires supplied by Tado.



  • #5
    Info_Seeker
    Registered Users, Registered Users 2 Posts: 81 ✭✭Info_Seeker


    https://www.boards.ie/discussion/comment/121626800#Comment_121626800

    @ongarite it worked!!!

    Thanks a lot! God bless you!!!



  • #6
    alancorrigan
    Registered Users, Registered Users 2 Posts: 2 ✭alancorrigan


    Help!

    I’m struggling with this. I ended up getting an electrician to install, so it’s all wired up, but he left me to the setup myself. The wireless controller works manually ok, but doesn’t appear to turn off or on using the app. Any idea???



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  • #7
    alancorrigan
    Registered Users, Registered Users 2 Posts: 2 ✭alancorrigan


    I’ve since got sorted. All that was wrong was the internet bridge was a bit too far away.

    All is working great now! :-)



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