Ariston CLAS SYSTEM One Installation And Servicing Manual

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MAINTENANCE GUIDE
3.14 By-pass assembly
Tools
TIME 5 min
Drain the boiler (see 3.3). Remove the clip and pull the as-
sembly towards you
1
2
3
3.15 Temperature sensors
Tools
TIME 5 min
NTC1 : Black
NTC2: Red
1
Unplug the electrical connectors
2
Remove the clip and the temperature sensor
IMPORTANT ! Do not use conducting paste for the
contact sensors because it will alter the resistance value.
TEMPERATURE RESISTANCE (kOhm)
0 27
10 17
20 12
25 10
30 8
40 5
50 4
NTC1
NTC2

Ariston CLAS SYSTEM One Specifications

General

Fuel Type	Natural Gas / LPG
Mounting	Wall-mounted
ErP Heating Efficiency	A
Modulation	1:7
Heating Output	24 kW
Warranty	2 years