Variant menu: System Definition > Tank > Control or system schematic

System A3 or A4: Input dialog for heating buffer tank, Control page

On the Control page, the single coil heating buffer tanks have the same input parameters as the single coil DHW tanks.

Additionally, you define in the Redirection Valve section, the switching temperature for switching the three-way valve in the heating return: If the total of tank temperature in the boiler return and given switching temperature difference is higher than the temperature in the heating return, the heating return is redirected in the tank, which is therefore unloaded.