51
MAINTENANCE GUIDE
MAINTENANCE GUIDE: CLAS HE
3.13 SAFETY VALVE
SAFETY VALVE
Tools
Time
3.14 BY-PASS ASSEMBLY
5 min
1
Drain boiler (see 3.3). Disconnect the
discharge pipe
Remove the first clip on the left and
pull the safety valve towards you
BY-PASS ASSEMBLY
Tools
Time
5 min
1
Drain boiler (see 3.3). Remove the
second clip and pull the assembly
toward you
Push on the by-pass to disengage it
Page. 15 of 24
MAINTENANCE GUIDE: CLAS HE
3.15 TEMPERATURE SENSORS & OVERHEAT THERMOSTAT
TEMPERATURE SENSORS & OVERHEAT THERMOSTAT
Tools
Time
5 min
1
OT
: White wires
Remove the clip and the
temperature sensor or
overheat thermostat together
NTC1
: Black wires
NTC2
: Grey wires
Unplug the electrical
connectors
IMPORTANT!!!!
Do not use conducting paste for the contact sensors because it will alter the resistance value.
TEMPERATURE (°C)
RESISTANCE (kOmh)
0
27
10
17
20
12
25
10
30
8
40
5
50
4
60
3
70
2
80
1,5
3.16 MANUAL AIR VENT
MANUAL AIR VENT
Tools
5 min
Time
1
Drain boiler (see 3.3)
Remove the clip and lift the manual air vent from the exchanger
Page. 16 of 24
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