Ariston ALTEAS ONE Net Series Installation And Servicing Instructions page 56

MAINTENANCE GUIDE
3.13 Safety valve
Tools
Drain the boiler (see 3.3). Disconnect the discharge pipe.
Remove the fi st clip on the left and pull the safety valve
towards you
1
2
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3.14 Temperature sensors
Tools
TIME 5 min
NTC1 : Black
NTC2: Red
1
Unplug the electrical connectors
2
Remove the clip and the temperature sensor
NTC1
NTC2
IMPORTANT ! Do not use conducting paste for the
contact sensors because it will alter the resistance value.
TEMPERATURE
0
10
20
25
30
40
50
TIME 5 min
RESISTANCE (kOhm)
27
17
12
10
8
5
4