This is outgoing flow temperature thermostat, adjusting the heating curve based on outside temperature. A very basic component which is on every single water ba

This is outgoing flow temperature thermostat, adjusting the heating curve based on outside temperature. A very basic component which is on every single water based heating system in the Nordic countries. I am baffled why this is not a standard part. This component can also adjust the flow rate and the temperature of the water. A more advanced system can look ahead the coming weather AND price of energy and use thermal capacity to overheat / cool the building ahead of time.