viessmann vitodens 050-w and Opentherm
I've just had this boiler installed and want it to use Opentherm which the boiler is compatible for.
The old boiler didn't have modulation.
I've had the tado system for around 4 years now so have the below setup:
extension kit which is wired directly into boiler.
6 wireless radiator thermostats.
5 wireless add-on room thermostats.
I've attached a screenshot of how my current extension kit has been wired into the boiler.
How can I get this wired up so my boiler modulates the heating using OpenTherm?
Your help would be much appreciated as the main reason for buying this boiler was because it can modulate the heat and is Opentherm compatible.