Maintenance; Emptying The Hydraulic Unit; Aci Check; Distribution Valve - Fujitsu WATERSTAGE WS A050DD6 Series Maintenance Document

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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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This manual is also suitable for:

Waterstage ws a100dd6 seriesWaterstage wg a050dd6 seriesWaterstage wg a100dd6 seriesWaterstage wo a060ldc seriesWaterstage wo a080ldc seriesWaterstage wo a100ldt series

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