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All wired in now, thanks for all the replies :giggle: Sparky came and did what @Johnmdc recommended, system has been in a few weeks now and working really well. Bagged Wiser TRVs for about £30 a piece on Black Friday too which was a good deal!

Questionable work on the water inlet that's for sure! Looks like somebody has redone it so it was probably leaking at one stage!

Got a sparky round who specialised in heating systems in the end and this is exactly what he did. Jobs a good'un! Thank you for the advice :giggle:

Thanks @stem, really appreciate the sharing of knowledge. I agree with you, best (and probably only!) solution is to run a new cable from the wiring centre back down to the boiler area so we can add that new live

Thanks for coming back to me @stem Zone 1 = Downstairs Zone 2 = Upstairs So based on my understanding of your message, wiring centre 7 needs a live back to one of the CH ports on the wiser. I don't think there is a way for me to link 7 into CH1 because no spare lives exist. If l move the...

Hello, I am trying to replace a Danfoss system with the Drayton Wiser 3 zone setup. The house currently has a gas boiler controlled by Danfoss TP9000MA which controls the heating downstairs and hot water. This box has an external temperature sensor on the wall which is wired back to the unit...