Ariston CLAS HE EVO - Hydraulic Unit

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MAINTENANCE GUIDE
3. HYDRAULIC UNIT
3.1 RIGHT HAND HYDRAULIC BLOCK ASSEMBLY
Legend:
1 - Diverter valve motor
2 - Diverter valve
3 - Auto air vent
4 - Primary water pressure switch
5 - Pump
6 - Central heating  lter
8 - D.H.W.  ow switch assembly
9 - Central Heating return
10 - Cold water inlet (D.H.W.)
11 - C.H. drain valve
3.2. 3 Way valve unit
Tools
TIME 5 min
Unplug the diverter valve cable
1
Remove the clip and lift the motor from the diverter valve body.
2
Drain the boiler (see 3.3). Remove the clip and lift the diverter
valve from the assembly.
3
When reassembling, ensure the diverter valve is aligned
correctly.
4