Yes, there were two links. One was from heating LR to L output and the other from DHW LR to L output. I had removed the links for both and put A & B from the receiver into one of each the LR's. As I said, the hotwater worked but I will go back and redo one of the links to DHW for pre heat...
Just wondered if anyone can answer this question for me?
I have worked on numerous different boilers wiring them up but today I had a WB 30si compact which I've never come across (I'm assuming it's a fairly new boiler to the WB range of combis.)
I had a CM721 programmable stat to wire in...