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WIFI room thermostat – have I done the cable bit correct?

Discussion in 'Plumbing and Central Heating' started by Graham P, 22 Nov 2019.

  1. Graham P

    Graham P

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    Good afternoon.

    I’m after some confirmation. Just changed over from an old rotating Honeywell room thermostat to a new WIFI digital one. It’s connected to my Potterton gas boiler via the switch unit underneath. (see pics). I’m aware that I have to leave the ‘CH’ slider to constant ‘ON’ to provide power to the thermostat.

    It’s all work… but have I done it correctly??? Just want to check before screw it to the wall.

    Thanks in advance.

    Graham. 20191122_132628.jpg 20191122_132524.jpg 20191122_132704.jpg
     
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  3. stem

    stem

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    You have wires in the correct terminals. But whether it's the correct wire or not depends on what is on the other end of each of the wires. Assuming the conventional way of wiring it up has been used, ie:

    Red (would have been in Honeywell 1) = Live from programmer
    Blue (would have been in Honeywell 2) = Neutral
    Yellow (would have been in Honeywell 3) = Switched live to heating system / boiler

    Capture.JPG

    If that's how yours was, then yes the new one is wired up correctly. It wouldn't work if not.
     
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  4. Graham P

    Graham P

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    Thanks for your reply. I was sure I had done it correctly but wanted a second opinion. It's all working, including the WIFI and Alexa bit, although that part wasn't as easy as I hoped!

    Thanks again.
     
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