Quote Originally Posted by guyank View Post
I was also under the impression that it would allow Evohome to reduce the requested flow temperature at higher outside temperatures, greatly reducing the chance of overshoots. We have a couple of zones that seem to drop below setpoint by a couple of degrees, even when it’s pretty warm. Up until a couple of days ago when I gave up and turned the heating off, this would result in huge overshoots as 80C flow was being demanded just before we got up.
That’s why I implemented my own weather compensation for my Intergas boiler using customised firmware running on an OpenTherm Gateway. There is an article about this, back in January, on the Automated Home website.