I must be going mad, the neutral comes in and splits to the boiler and the BDR91, but the live comes in directly to the BDR91 then to the boiler doesn't it?
Regards
Pete
I know this thread is quite old now, but I just found it looking for advice on installing this exact same unit.
On the diagram shown by JonCa on 1/2/13, the live supply seems to go through the BDR91 to the boiler, but as far as I can see, this would mean that the boiler will only work when the...