■ On ErP boilers: Low Energy, synchronous pump EEI ≤ 0.20.
■ Bithermic heat-exchanger.
■ Efficiency ★★★ according to European Directive EEC 92/42 (on room-sealed models.
■ Two air inlet holes (right and left side).
■ Expansion vessel 8 litres.
■ 4 metres single-speed circulator on 20-24 kW versions (non-ErP boilers).
■ 5 metres 3-speed circulator on 28 kW versions (non-ErP boilers).
■ Intuitive and easy-to-use control panel with backlit digital display.
■ Built-in thermoregulation (external temperature probe as option).
■ IPX5D electrical protection.
■ Frost protection kit till -10 °C available as option.
■ Upper and lower cover availbale as option (on 20-24 C.S.I. models).
■ Hydraulic connections, gas and DHW taps available as option.