105
910.001.1 - EN
ISTRUCTIONS PERTAINING TO THE INSTALLER
To facilitate measurement of the combustion efciency and improve the cleanliness of the production products,
the chimney sweep function can be activated by proceeding as described below:
1) press the (2-3) together until the pointer “ ” appears on the display alongside the symbol (about 3
seconds but no more than 6 seconds). In these conditions, the boiler operates at the maximum heat output
in central heating mode.
2) press either of the buttons to exit the function
020429_0200
Figure 16
18. ACTIVATING THE CHIMNEY SWEEP FUNCTION
19. ANNUAL SERVICE
To optimise boiler efciency, carry out the following annual controls:
•checktheappearanceandairtightnessofthegasketsofthegasandcombustioncircuits;
•checkthestateandcorrectpositionoftheignitionandame-sensingelectrodes;
•checkthestateoftheburnerandmakesureitisrmlyxed;
•checkforanyimpuritiesinsidethecombustionchamber.
Useavacuumcleanertodothis;
•checkthegasvalveiscorrectlycalibrated;
•checkthepressureoftheheatingsystem;
•checkthepressureoftheexpansionvessel;
•checkthefanworkscorrectly;
•makesuretheueandairductsareunobstructed;
•checkforanyimpuritiesinsidethesiphonttedoncertainboilers;
•checkthemagnesiumanode,wherepresent,forboilersttedwithstorageboilers.
WARNINGS
Before commencing any maintenance operations, make sure the boiler is disconnected from the power
supply. Afterwards, move the knobs and/or operating parameters of the boiler to their original positions.