Originally Posted by
yngndrw
I found the same thing with Nest and OpenTherm, I called their technical support line to ask some OpenTherm questions and nobody had an answer even when they asked around. I think it's one of those things that I'll just have to take the plunge and give it a go. I might start off with just a basic system (No HR92s) and then add to it as I learn how it works.
One question that I have around the installation of the hot water kit is that earlier you mentioned that you have the EvoHome HW kit in series with the existing cylinder stat. My unvented cylinder is a ThermaQ Evocyl 210 which has a stat pocket going into the cylinder. There's an ESi cylinder stat mounted directly in front of the pocket with presumably its sensors going directly inside.
The ESi documentation suggests that there's two thermostats inside, an adjustable one and a separate 80C limit thermostat with a manual reset inside - Does the EvoTherm HW kit not fully replace both of these or do I need to find a replacement for the limit thermostat to go with it ?