MAINTENANCE GUIDE: CLAS HE
3.3 DRAINING
DRAINING
Tools
Time
5 min
1
Turn the drain valve anti-clockwise to open and drain the water
from the boiler.
3.4
AUTOMATIC AIR VENT
AUTOMATIC AIR VENT
Tools
Time
5 min
1
Drain boiler (see 3.3). Remove the clip and lift the AAV from the
assembly
3.5
PRIMARY WATER PRESSURE SENSOR
PRIMARY WATER PRESSURE SENSOR
Tools
Time
5 min
1
Drain boiler (see 3.3). Remove the fixing clip, unplug the
electrical connector and lift the sensor from the assembly
Page. 10 of 24
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