Slow Harvesting adjusts the radiator valve such that:
the valve is sufficiently open to enable hot water to flow from the hot water connecting pipe to the valve
the valve is sufficiently closed to ensure that hot water consumption does not increase, and the radiator and the room are not heated
Slow Harvesting enables the actuator to generate electrical energy and maintain or even recover its internal storage voltage. At the same time, the building hot water consumption will not increase. Additionally, the room temperature will not be effected, and so users will not experience unwanted heating.