9. Connect the electrical connections to the fan.
10. Lock the fan power plug with the safety slides.
11. Mount the air supply hose to the air box.
11.5 Finalising work
1. Fit all removed parts in the reverse order, but do not close the casing
yet.
Caution
During inspection and maintenance operations, always replace all
gaskets on the parts removed.
2. Fill the siphon with water.
3. Put the siphon back in place.
4. Carefully open all system and supply valves which were closed to
carry out the maintenance.
5. Fill the central heating system with water if necessary.
6. Vent the central heating system.
7. Top up with more water if necessary.
8. Check the tightness of the gas and water connections.
9. Put the boiler back into operation.
10. Carry out an auto-detect when a control board has been replaced or
removed from the boiler.
11. Set the boiler to full load and carry out a gas leak detection and a
thorough visual check.
12. Set the boiler to normal operation.
13. Close the casing.
11.6 Disposal and recycling
Important
Removal and disposal of the boiler must be carried out by a
qualified person in accordance with local and national regulations.
To remove the boiler, proceed as follows:
1. Cut the power supply to the boiler.
2. Shut off the gas supply.
3. Shut off the water supply.
4. Drain the system.
5. Remove the siphon.
6. Remove the air supply/flue gas outlet pipes.
7. Disconnect all pipes on the boiler.
8. Remove the boiler.
Fig.144 Fitting the electrical connections
and air supply hose
AD-3001590-01
9
10
11
Fig.145
MW-3000179-03
11 Maintenance
7762666 - v.02 - 29092020
C 340 / C 640
159
