The Efficient Home Forum

I've added the HCC80R and also I have T87RF2033 as the room thermostat (from evohomeshop). I use the OpenTherm bridge. Everything is connected and working fine. However, when the temperature is within 0.5C of the set-point the boiler is throttled down by evohome and opentherm. Just like it would wit...

Yes, but understand that it is experimental and may not work as expected for you. I've had some time to dig in to home assistant, I had to add the SR command support to pyotgw lib and to the opentherm gateway component, but now I can control max CHW from home assistant. It would be great if you cou...

WOW! This thread took on a life of its own :) I think it should be the Evohome controller's job and not the dial on the front of the boiler. The controller would be able to use additional information such as the outside temperature if required. But, also, when you have an underfloor controller and i...

It's only been 24 hours. I'll just leave it to its onward see what happens.

I've seen other people using this combination on automated home. I've just setup the following system but it doesn't seem to be operating efficiently. When a zone calls for heat the boiler fires up and seems to run at 80C. The return on this initially is > 20C drop. As the zone begins to warm a few ...