Annual Servicing; Hydraulic Unit; Positioning The Electrode; Cleaning The Filters - Baxi ECO5 BLUE Operating And Installation Instructions

17. ANNUAL SERVICING

If the boiler was operating, wait for the combustion chamber and pipes to cool down.
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.
Do not clean the boiler with abrasive, aggressive and/or easily flammable substances (such as petrol, acetone, etc.).
To optimise boiler efficiency, carry out the following annual controls:
• Check the appearance and airtightness of the gaskets of the gas and combustion circuits. Replace any worn seals with new
original spares;
• 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;
• Make sure the flue and air ducts are unobstructed;

17.1 HYDRAULIC UNIT

For special areas, where the water is harder than 20 °F (1 °F = 10 mg calcium carbonate per litre of water), install, on the cold
water inlet, a polyphosphate dispenser or an equivalent treatment system, compliant with current regulations.

17.2 POSITIONING THE ELECTRODE

17.3 CLEANING THE FILTERS

The DHW filter is housed in a special removable cartridge and is positioned on the cold water inlet (E) (see figure at the end of the
manual in "SECTION" F). To clean the filter, proceed as described below:
• switch off the boiler;
• shut the DHW inlet tap;
• remove the clip (1-E) from the filter as illustrated in the figure and take out the cartridge (2-E) containing the filter, taking care
not to apply excessive force;
• eliminate any impurities and deposits from the filter;
• reposition the filter in the cartridge and put it back into its housing, securing it with the clip.
Remove the scale from the housing and relative NTC sensor fitted on the DHW circuit (D).
When replacing and/or cleaning the O-rings on the hydraulic assembly, only use Molykote 111 as a lubricant, not oil or
grease.
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