BDR91 Receiver replacement with Hive wiring

25 Nov 2023
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United Kingdom
Hi all,

Would be greatly appreciated if you could help me with this:

I have connected the cables in this order (single channel receiver).
BDR91 N to Hive N
BDR91 L to Hive L
BDR91 A to Hive 2
BDR91 B to Hive 3

In the application/thermostat, the receiver does kick off when the central heating is activated but not the boiler.

There seems to be a disconnect between the boiler and the receiver.

Please could you help me with what's missing?

I am not sure where to check if I have a 230v or a 24v
I have a combi boiler, vaillant ecotec pro 28


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Why did you use 2 and 3 on the Hive? One wire, not cable should go to common (eg Grey) and the other to heating on (terminal 3).
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Its the boiler that sends and receives the voltage, you’re not making a 240 link, so that doesn’t matter in this case. The Hive is capable of the range of voltage switching too.

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