In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
I have recently had a complete viessmann system installed for heating and hot water.
vitotriol 300 thermostat
during summer i select only dhw setting and turn off the heating but my radiators are still roasting hot. I have set the hot water to be recharged between set times during the day but my heating comes on at the same time.