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Emptying the hydraulic unit
- Remove the front panel of the hydraulic unit.
- Open the drain plug,
- Check that the hydraulic unit's bleeder valve opens
automatically,
- Open the installation’s bleeder valve(s).
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Distribution valve
If the installation is fi tted with a hot water tank.
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.
Other maintenance
alfea excellia A.I. / Installation / 1876 - EN