The Efficient Home Forum

Hello,
My boiler ACV Compact Hre Eco18 solo has integreded automatic module brand Honeywell. I have Honeywell Evohome ATP921R3100 with BDR91 module. Do I must buy R8810A OpenTherm module to using this protocole or can I pairing Evohome directly with my boiler and OT will be working corectly?

Yes you will need an OpenTherm Bridge with evohome and the boiler you have. Interesting it is ACV as these are Intergas boilers? What country are you in?

I'm from Poland. I just bought open therm bridge R8810A and I will try connect this with my boiler.
When I trying connected central unit Evohome directly with my boiler, connecting was successfull, testing signal between unit central and boiler was during corectly, but boiler didn't want to start. In mark Intergas boiler propably it's this wireless connection work fine.