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BB connections on a Worcester Boiler

I am installing the Extension Kit on a Worcester Boiler Greenstar CDI and the instructions don't make it clear which way round the wires go when connecting to the BB sockets on the connector block.

Could someone please view the wiring and confirm if this is correct?

Kind regards



  • You can connect the wires either way round. They are data bus connections and the polarity is not relevant.

  • @Wizard - I also have installed to a Greenstar, how did you get on? My extender isnt bringing the heat for some reason and Tado support are non-existent.

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