LEGIOMIX ® 2.0 - Regulation and Disinfection
TEMPERATURE REGULATION AND THERMAL DISINFECTION OF DOMESTIC WATER SYSTEMS
The LEGIOMIX® 2.0 hybrid electronic mixing valve combines the precise and fast response of thermostatic systems with the effectiveness of electronic devices.
Controlling the temperature of domestic hot water supplied to user devices is essential to prevent health hazards and improve the efficiency of the entire system. In systems with storage tanks, the water must be stored at no less than 60 °C to prevent the proliferation of the Legionella bacterium. However, users may be exposed to the risk of scalding, which is especially hazardous when the user is a child. To prevent this risk, mixing taps are used to ensure that the water temperature is not higher than 50 °C.
The LEGIOMIX® 2.0 hybrid electronic mixing valve is based on the operating principle of thermostatic mixing valves, and is equipped with a water temperature sensor that comes in direct contact with the fluid and which expands or contracts itself in response to the temperature detected at the valve output.
This movement controls an obturator adjusting the cold and hot water intake, thus ensuring that the setpoint temperature is maintained.
The use of a mechanical system for temperature control results in a faster response to changes in the system conditions, so that an effective mixing is ensured at all times.
The electronic regulation, which is fitted directly to the valve, has a mixed water temperature sensor monitoring the delivery temperature and acting on the thermostatic sensor to change the settings or management options for the domestic water circuit disinfection stage. LEGIOMIX® 2.0 can be controlled directly at the valve's on-board display, or remotely. Domotics systems allow the user to manage operations with the MODBUS control protocol, with an optional network card, when used in Building Management Systems (BMS).
