10.6 Specific maintenance operations
10.6.1 Draining the heating circuit
1. Connect a hose (internal diameter: 8 mm) to the drain valve on the
heating circuit.
2. Open the drain valve.
3. Await the complete drainage of the heating circuit.
10.6.2 Replacing the battery in the control panel
If the indoor module is switched off, the control panel battery takes over to
keep the correct time.
The battery must be replaced when the time is no longer saved.
1. Remove the front panel by pulling firmly upwards.
2. Tilt the control panel support forwards.
Important
Keep a good hold of the control panel bracket in order not to pull
out or disconnect the electrical connections in the control panel.
3. Remove the battery located in back plate of the control panel by
pushing it gently forwards.
4. Insert a new battery.
Important
Battery type:
CR2032, 3V
Do not use rechargeable batteries
Do not discard used batteries in the dustbin. Take them to an
appropriate collection place.
5. Re-assemble everything.
Fig.84
MW
-1001274-1
1
2
Fig.85
MW-5000165-1
10 Maintenance
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