Electronically controlled instantaneous water heater with bare wire heating elements. Nominal output switchable 15/18/21 kW. Ideal combination with heat pump or solar system for hot water flow temperatures up to 55 °C. Rotary control for easy and quick selection of different modes: washing hands, showering, rinsing etc. (setting range 20 °C - 60 °C). Simplified installation thanks to removable hydraulic block for assembly and maintenance purposes. Versatile use thanks to adjustable maximum outlet temperature: 60 °C (normal operation), 53 °C (showering), 48 °C (eco mode), 42 °C (people in need of protection, e.g. kindergartens, sensory homes, etc.). Energy efficiency class A. Installation dimensions compatible with the previous series.