DBMandrake
Automated Home Legend

Hi,
I’m sorry to bother you but I’m after a little advice with regards to wiring my mechanical stat in series with the BDR91.
I’m getting very irregular/slow updates from the CS92 which is causing temp overshoots, something I am concerned about as I have an unvented cylinder.
I know the theory behind it - and am familiar with the wiring of the system but I don’t really know where to start as I don’t want to cause myself problems which could be costly.

I have an s plan system and a 2 wire mechanical stat with com and 1 wires (I guess 1 is. NC)

I’d appreciate any advice you could give me.

Many thanks

Ed