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Maintenance
5. Maintenance
WARNING
Any maintenance (and repair) work must only be carried out by qualied personnel.
The user is strongly advised to have the product serviced and repaired by a service centre or qualied personnel.
Appropriate boiler maintenance ensures ecient operation, environment preservation, and safety for people, animals and objects.
The boiler must be serviced at least once every year.
WARNING
Disconnect electric power supply before starting any maintenance procedure, involving replacement of components and/or
cleaning inside parts of boiler.
5.1 Maintenance schedule
Maintenance operations include check and cleaning procedures. In particular:
Inspections and checks
• Check general integrity of the boiler.
• Check boiler and network gas supply for leakage.
• Check gas supply pressure to boiler.
• Check minimum and maximum gas pressures to boiler nozzles.
• Check boiler ignition sequence.
• Check the condition and seal integrity of the ue gas venting ducts.
• Check operation of safety thermostat installed on the draught excluder.
• Check the condition of the draught excluder.
• Check that there is no ue gas return into the room and that the ue gases are vented correctly.
• Check integrity of safety devices of the boiler in general.
• Check for water leaks and oxidised areas on the boiler’s couplings.
• Check eciency of the system safety valve.
• Check expansion vessel lling pressure.
• Check water pressure switch eciency.
The following cleaning is to be done
• Clean the general interior of the boiler.
• Clean the gas nozzles.
• Clean the draught excluder.
• Clean the ventilation grille in the room in which the boiler is installed.
• Clean the heat exchanger.
When checking the boiler for the very rst time, also verify:
• Boiler room suitability.
• The ventilation apertures in the room in which the boiler is installed.
• Diameter and length of ue gas system ducts.
• Boiler installation in accordance to this “Installation use and maintenance” manual instructions.
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