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11. Remount the burner.
For more information, see
Accessing the internal boiler components, page 43
Remounting the burner, page 107
11.2.6 Remounting the burner
1. Remount the pipe connecting the gas valve to the Venturi unit.
2. Remount the burner, the Venturi and the fan.
Important
Do not forget to remount the igniter on the burner.
Caution
Respect the torque on the burner fastening nuts: 5 N.m +/- 0.5.
Caution
Always use a new tightness gasket to reconnect the gas supply.
3. Reconnect the ignition electrode, the safety thermostat on the
combustion chamber door and the flame detection sensor.
4. Open all valves.
5. Check the tightness of the burner using a leak detection spray.
6. Put the covers back in place on the boiler.
Important
For the IX 145–50 and IX 145–70 models, put the panel located in
front of the burner back in place.
7. Reconnect the earth wire.
8. Re-commission the boiler.
For more information, see
Commissioning procedure, page 59
11.2.7 Thermal fuse in the heat exchanger
The thermal fuse is located in the rear part of the heat exchanger and is
connected in series to the safety thermostat.
The function of the thermal fuse is to ensure the protection of the heat
exchanger against the danger of overheating if the insulation malfunctions.
Intervention by the device is signalled by the on-screen display of the
anomaly 110:Lockout SLT.
1 Rear of the heat exchanger
2 Thermal fuse
Important
When replacing the thermal fuse, also replace the insulating
surface inside the heat exchanger. This insulating surface has
been damaged by overheating.
For more information, see
11.2.8 Check the combustion
Checking combustion (maximum heat input)
1. Check the combustion with maximum heat input.
Fig.126
MW-3000214-01
1
2
11 Maintenance
7702703 - v04 - 05092019
IX
107
Содержание IX 145-110
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