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worcester bosch greenstar 30i with greenstar comfort i rf

Hi, I don't have a wall plate as my current controller is mounted on the boiler itself (see pic)

so will I have to run a cable from the boiler to the Tado extension kit? If so

will the cable come with the purchase?

Is this a simple job? (I have basic diy skills)

Any help please


  • MichaelMichael | Moderator


    You have to run a cable to the Extension Kit. You will get this cable from tado°

    It's a simple job with our step-by-step installation instructions. After you received your devices, just register these online on your account. After answering the question about your heating system you will receive step by step instructions.

    Kind regards,


  • GashmanGashman
    edited November 2019
    Just done my worcester today. Similar model. Really easy. Remember to remove the interior panel behind the drop down control panel to access the wiring. The ST19 box is at the right rear. Not obvious which slot the wires go into - black at rear B and grey at second rear B. Remove the existing controller from the exterior - screw above. Remove wire control and then replace with blanking plate.

    Edit. The tado instructions are pretty good but not 100% intuitive in places, hence my tips above ;)
  • edited January 24
    @Gashman, @Michael my heating engineer was cautious in following the instructions from Tado for my Greenstar boiler (older than this one above).

    He said the ST19 was only a switch? And he couldn’t see where the power would be going into the extension kit. I had the the Tado team create custom instructions for my boiler and in it, they say to run the grey and black wires from ST19 into the extension box. That’s it.

    In your experience, is that all you had to do? Or does the power have to run into the extension kit separately?

    Thanks for taking the time to read my lengthy question, I really appreciate it. Hope you can help!
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