Maintenance; Emptying The Hydraulic Unit; Distribution Valve; Aci Check - Fujitsu WATERSTAGE WOYG160LJL Maintenance Document

Maintenance

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Emptying the hydraulic unit

- Remove the facade from the hydraulic unit.
- Place the distribution valve in the middle position.
- Open the emptying valve (ref. 5).
- Open the hydraulic unit's manual bleed-tap (ref. 6).
- Open the installation bleed tap.
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Distribution valve

Ensure the distribution valve is fi tted in the correct
direction:
Channel AB: Outlet to the hydraulic unit.
Channel A open: Return from DHW tank.
Channel B open: Return from the heating circuit.
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ACI check

- Check polarity.
- Check voltage: With the appliance powered on,
the voltage value must be positive and lie between
+10 and +13 V DC.
Contrôle de l'alimentation ACI
ACI power supply control
U = +10
Raccordement ACI :
ACI connection:
-
Le sur la masse du ballon,
- to the tank body,
+
Le sur le connecteur de l'électrode.
+ to the electrode connector.
fi g. 9 - ACI check
Waterstage / Maintenance Manual / 2105 - EN
à + 13V
to
Return from
the heating circuit
Valve
Flow towards
exchanger
from DHW tank
fi g. 6 - Mounting the distribution valve
Raccordement
Connection
Valve motor
Return
- 97 -