We have a Viessmann Vitodens 100 system boiler connected to an OSO unvented cylinder.
On the boiler there are controls to set the hot water temperature. Similarly, the OSO has controls to set the hot water temperature as well.
Is the system boiler control redundant as it doesn't seem to affect the temperature on the OSO cylinder?
On the boiler there are controls to set the hot water temperature. Similarly, the OSO has controls to set the hot water temperature as well.
Is the system boiler control redundant as it doesn't seem to affect the temperature on the OSO cylinder?