Having looked back to some notes that I took at the time, it would seem that my original installer set up the CH side of my 'S' plan using the boiler relay option. I have now followed advice - both on this forum and in Richard's video - and re-built the system using the port valve option. Both configurations work. Can someone tell me what changes for the better with the port valve set up compared to using the BDR91 as a wireless relay? Clearly, with the preferred solution all reference to boiler cycle rates are lost. I recall that this was a discussion that my installer had with me at the time (but it was nearly two years ago).
Blame my curiosity on 36 years spent in the air!
Blame my curiosity on 36 years spent in the air!
Comment