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Viessmann question


I have recently had a complete viessmann system installed for heating and hot water.

Vitcrossal 300

Vitocell 100

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.

Any solutions?


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