Ariston CLAS - 3-Way Valve

Training manual CLAS
Pag. 26 di 71
4.3 3-WAY VALVE
The boiler uses a 3-way to change the water distribution (heating system side or secondary exchanger
side). It’s managed by the PCB through a special relay. It is formed by a composite material body and
an electric motor (Actuator).
With the boiler on stand-by the 3-way valve is positioned on sanitary mode.
CAPTION
1. 3-way valve motor
2. 3-way valve motor locking clip
3. 3-way valve motor with
hydraulic unit locking clip
4. Shaft
5. Seal O-ring
The 3-way valve has a specific position for assembly (see photo below).
“HEATING” POSITION
“SANITARY” POSITION
1
4
2
3
5