Hi all. I just bought a new boiler and went for one that could speak opentherm.
This was so that external temperature and desired/current room temperature can be fed to the boiler allowing better control.(http://www.intergasheating.co.uk/consumer/category/combi-compact-eco-rf/)
This has an open therm connection for which an adapter can be built and then attached to the boiler via cable (http://otgw.tclcode.com). The boiler also allows control via RF using an 866Mhz protocol.
Has any one managed / tried to reverse the RF protocol ?