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Split system single phase type
6 Maintenance (integrated DHW models
6.1
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.
6.2
Distribution valve
Carefully comply with the direction for fitting the
distribution valve:
Channel AB: Inlet from the hydraulic unit (heat
pump).
Channel A Open: Outlet to DHW tank.
Channel B Open: Outlet to the heating circuit.
6.3
ACI check
- Check polarity.
- Check voltage: The appliance powered on, the
voltage value must be positive and lie between 0 +
and + 6.5 V dc.
92
Figure 4 - Fitting the distribution valve
Figure 5 - ACI check
Maintenance Document 1589-3
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