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BDR91 to Hive V4

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14 Sep 2025
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Hi,

I know similar has been posted before, but I can't find the same wiring configuration. I wonder if the current wiring configuration I have can easily be replaced with a Hive v4 reciever without changing the wiring in the boiler - Vaillant Ecotec Pure 835 combi? If so which wires would go where? I'm not sure what the linked live is.

I presume:

Neutral wire to neutral
Both live wires to live
Back wire to common
Grey wire to position 3

Thank you
 

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Last edited:
Hi,

I know similar has been posted before, but I can't find the same wiring configuration. I wonder if the current wiring configuration I have can easily be replaced with a Hive v4 reciever without changing the wiring in the boiler - Vaillant Ecotec Pure 835 combi? If so which wires would go where? I'm not sure what the linked live is.

I presume:

Neutral wire to neutral
Both live wires to live
Back wire to common
Grey wire to position 3

Thank you
That should work.
 
Thank you. What do i do with the linked wire going from live to live?
 

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