MAINTENANCE INSTRUCTIONS
TR05A153.B1107
50
6 MAINTENANCE
6.1 General warnings
All maintenance operations must be carried out by professionally qualified personnel.
The frequency of boiler maintenance must comply with current law and should, in any case, be carried
out annually.
In order to guarantee the long life of the appliance, and in accordance with the current gas safety
regulations, only use original spare parts.
Before carrying out any type of maintenance operation, disconnect the appliance from the mains
electricity supply and close the gas valve.
6.2 Boiler inspection
In order to ensure that the boiler operates efficiently and safely, it is recommended that the appliance is inspected
by a suitably competent technician at least once a year.
The following must be checked annually:
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The condition of the gas seals – replace where necessary;
■
The condition of the water seals – replace where necessary;
■
The condition of the combustion chamber and flame;
■
The combustion parameters – if necessary adjust in line with Sections 5.6;
■
The condition of the burner – remove any oxidation and clean if necessary;
■
The seal of the room sealed chamber is undamaged and positioned correctly;
■
The condition of the primary heat exchanger – clean if necessary;
■
The maximum and minimum gas pressures and the modulation process – adjust if necessary;
■
The condition and operation of the ignition and gas safety systems – if necessary remove and clean any scaling
from the ignition and flame detection electrodes, paying particular attention to replace them at the correct
distance from the burner (see Section 6.7.3);
■
The heating safety systems: temperature and pressure limit devices – replace where necessary;
■
The expansion vessel pre-charge pressure (should be 1 bar when cold) – if necessary refer to Section 4.4.3;
■
The integrity and operation of the flue system – correct where necessary;
■
That the mains electricity supply is safe and correctly rated (refer to Section 4.7) – correct where necessary;
■
The electrical connections inside the control panel – correct where necessary;
■
The DHW flow rate and temperature (refer to Section 3.1) – service the DHW circuit if necessary;
■
That the condensate drainage system is working correctly, including any parts of the system outside the boiler
such as condensate collection devices along the length of the flue and/or any acid neutralising devices – correct
where necessary;
■
That the condensate flows freely and that no exhaust fumes are present within the appliance or drainage system
– correct where necessary.
