LEGIONELLA PROTECTION FUNCTION. It is activated every 7 days (168 h) if temperature of water contained into the tank has remained permanentemenet below 61 °C, throughout the (legionella) treatment period, the display shows: This function can be disabled by using REGOLA- FACILE parameter TSP n. 24 NOTE If preparation of the storage tank is not enabled (C in pos. 1 and / or Regolafacile in stand-by), at the end of the counting (168 h) the symbol is displayed on the display, without switching on boiler. When the preparation of storage tank is enabled (C pos. 2 and / or Regolafacile active), the boiler switches to satisfy the request of legionella protection). The 168 h timer stops counting and reset if the storage water temperature exceeds 61 °C or in case of Blackout. NOTE The safety pressure switch against lack of water does not give electric consent for burner start when the pressure is below 0.4 bar. The water pressure in the heating system must not drop below 0.8/1 bar; open the filling tap on the boiler when the pressure is too low. This operation must be performed with a cooled system. The pressure gauge fitted on the boiler allows you to read the circuit pressure. NOTE If the boiler was without electric power, after a certain idle period, the pump could be blocked. Before electrically powering the boiler, the pump must be unblocked by operating as follows: Remove the protective screw from the pump centre using a cloth and insert a screwdriver, manually turning the pump's shaft clockwise. After having unblocked the pump, tighten the protective screw and make sure there is no water leakage. After removing the protective screw, a small amount of water could leak out. Dry all wet surfaces before re-assembling the casing.
