Ariston ALTEAS ONE Net Series Installation And Servicing Instructions page 51

3.3 Draining
Tools
Turn the drain valve anti-clockwise to open and drain the
water from the boiler
1
3.4 Automatic air vent
Tools
Drain the boiler (see 3.3).
Unscrew anticlockwise the AAV from the assembly.
1
2
3.5 Primary water pressure sensor
Tools
TIME 5 min
Drain the boiler (see 3.3).
Slide the fi xing clip, (it is held captive) unplug the electrical
connector and lift the sensor from the assembly.
1
2
TIME 5 min
MAINTENANCE GUIDE
TIME 5 min
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