4 Carry out a visual check for the presence of any water leaks.
4 Open and close the radiator valves several times a year (this
prevents the valves from seizing up).
4 Clean the outside of the boiler using a damp cloth and a light
detergent.
CAUTION
Only a qualified professional is authorised to clean the
inside of the boiler.
6.3 Filling the system
1. Check the water pressure in the installation shown on the control
panel display.
If the water pressure is lower than 0,8 bar, more water
should be added. If necessary, top up the water level in the
heating system (recommended hydraulic pressure
between 1,5 and 2,0 bar).
2. Open the valves on all radiators connected to the heating system.
3. Set the room thermostat to as low a temperature as possible.
4. Wait until the temperature drops below 40°C and the radiators
seem cold before filling the central heating system.
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