Description
The Viessmann 7828795 Flow Switch is sensing equipment used to detect the presence and movement of water within a heating circuit in HVAC systems. It is used in boiler units and hydronic heating equipment, where it ensures that the system only operates when adequate flow conditions are present. It is installed in the hydraulic loop of models such as the Vitodens series. It sends an electrical signal to the control board to confirm circulation before ignition or heat demand is activated. Its role is essential for protecting internal components, preventing dry firing, and maintaining safe, and efficient system operation under varying load conditions.
