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Wiring to danfoss - honeywell

MiKMiK
MiKMiK ✭
in General Questions & Topics

Hey there. i am a little confused how am i supposed to wire this, and also what configuration code choose later on. The system i have is Danfoss district heating, but i assume it works on Honeywell t3 wired thermostat, which only turns on/off Danfoss. When it does i can hear click noise. I am enclosing a pic of danfoss wiring.

there is also brown and green/yellow wire in the box. i believe brown is not plugged to anything.

Thanks!

IMG_0932.png

Best Answer

  • policywonk
    policywonk ✭✭✭
    Answer ✓

    @MiKMiK . This video Mounting and Installing a T3 Thermostat- European Model describes how your model of programmer is linked in. It confirms the suggestion given earlier.

    It is important to check the voltage on ports A and B. Are they 24 volts or under, or at full mains voltage? Tado need this information.

    If you are uncomfortable measuring voltage, a good idea would be to contact the firm which delivers your district system and ask them whether ports A and B are meant to run

    • at mains voltage simply serving as a switch
    • operate as a 'NOVOLT' on-off switch, or
    • as a digital connection, supporting a well accepted digital control protocol- and if so, what protocol do they want supported?

    The guide (the video link referred here) mentions the option of installing a wireless thermostat which then mates with the programmer. Do you have a wireless thermostat mated to that T3H110A, or is it just wired as is, nothing else?

    Hope this makes sense.

Answers

  • policywonk
    policywonk ✭✭✭

    Suggest you contact Tado and ask them about the T3H110A thermostat programmer. It seems that the cables migrate like this:

    • Port A to Tado COM
    • Port B to Tado NO.

    But please contact Tado support and check.

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