BDR91 Receiver replacement with Hive wiring

[Guydemiran]

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?

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

 

[CBW]

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).

 

[Guydemiran]

Thanks @CBW I will try that out now - is there no issues with it being 240v vs 24v? I saw some posts mentioning it but not sure if it matters.

Based on @stem's comment here: https://www.diynot.com/diy/threads/honeywell-bdr91-to-hive-combi.511958/post-4250858, which matches yours, voltage shouldnt matter in this setup?

 

[CBW]

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.