I have a Honeywell Evohome Wifi system and Remeha Tzerra Ace boiler connected with BDR91A1000 relay module.
I'm trying to change this relay module to the R8810A1018 OpenTherm bridge hoping more optimal boiler operation.
Can someone point me to a service company or a web site where I can learn if this is possible at all and can this be done by myself?