Weather comp (baxi ifos) with nest opentherm thermostst

[Roseyp]

Hi all,
I have just bought a google nest 3rd gen thermostat to be connected opentherm. I currently have the baxi ifos rather comp fitted. I was told that it was either one or the other, but baxi technical dept have said I can wire an opentherm controller alongside the ifos system. Boiler is the main eco compact 30kw combi. Is it better to do this or just use opentherm ?? I have attached the email that I received.
Thanks all

 

[ShaunCorbs]

No you can’t your best fitting the nest on the 240v side eg on / off controls and let the ifos weather comp work it’s magic