Wet rotor electronic circulator designed for the circulation of water for heating and conditioning in residential building service. The permanent magnet synchronous motor and electronics with variable frequency drive automatically adapt the performance to the actual requirements of the system, to save energy and protect against water hammer action. It is designed for simplify the substitution of the old circulators. Evosta 2 has a simple configuration with a sequential key for scrolling through the nine operating modes: three for proportional pressure, three for constant pressure, and three for constant speed curves. All the models have a brass air vent plug and enable manual deblocking of the motor shaft. Threaded suction and delivery ports. Cast iron pump body. Electronics protected against water ingress with IPX5 protection. No overload protection required. The included calcium removal cartridge keeps the motor shaft in perfect condition, preventing the normal formation of limescale that it can be generated inside the circulator if some air bubbles are present during the first installation. 5 years warranty.