Fujitsu Waterstage Split Comfort 5 Series - Other Maintenance; Emptying the Hydraulic Unit; Distribution Valve; ACI Check

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B
A
AB
 Other maintenance
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Emptying the hydraulic unit
- Remove the front panel from the HP.
- Place the distribution valve in the middle position.
- Open the drain valve (ref. 5).
- Open the hydraulic unit's manual bleeder valve (ref. 6).
- Open the installation’s bleeder valve(s).
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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.
fi g. 53 - Mounting the distribution valve
Flow towards
exchanger
Return from
the heating circuit
Return
from DHW tank
Valve
Valve motor
U = +10 + 13V
Contrôle de l'alimentation ACI Raccordement
Raccordement ACI :
Le sur la masse du ballon,
Le sur le connecteur de l'électrode.
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+
à
fi g. 54 - ACI check
RaccordementACI power supply control Connection
ACI connection:
- to the tank body,
+ to the electrode connector.
to
Waterstage Split Comfort DHW Serie / INSTALLATION / 2125 - EN