Activating The Flue-Sweeper Function; Annual Service - Baxi Power HT Series Installation, Operation And Maintenance Manual

18. ACTIVATING THE CHIMNEY SWEEP FUNCTION
To facilitate measurement of the combustion efficiency 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
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
Figure 16
To optimise boiler efficiency, carry out the following annual controls:
• check the appearance and airtightness of the gaskets of the gas and combustion circuits;
• check the state and correct position of the ignition and flame-sensing electrodes;
• check the state of the burner and make sure it is firmly fixed;
• check for any impurities inside the combustion chamber.
Use a vacuum cleaner to do this;
• check the gas valve is correctly calibrated;
• check the pressure of the heating system;
• check the pressure of the expansion vessel;
• check the fan works correctly;
• make sure the flue and air ducts are unobstructed;
• check for any impurities inside the siphon fitted on certain boilers;
• check the magnesium anode, where present, for boilers fitted with storage boilers.
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.
ISTRUCTIONS PERTAINING TO THE INSTALLER
buttons to exit the function

19. ANNUAL SERVICE

105
symbol (about 3
910.001.1 - EN