Yearly Appliance Check And Maintenance - Immergas MINI EOLO X 24 3 E Instructions And Warnings

3.3 YEARLY APPLIANCE CHECK AND
MAINTENANCE.
The following checks and maintenance should be
performed at least once a year to ensure operation,
safety and efficiency of the appliance over time.
- Clean the flue side of the heat exchanger.
- Clean the main burner.
- Visually check the flue hood for deterioration or corrosion.
- Check correct lighting and operation.
- Ensure correct calibration of the burner in domestic water
(when the boiler is connected to an external cylinder) and
heating phases.
- Check correct operation of control and adjustment devices
and in particular:
• activation of the main switch located outside the boiler;
• system control thermostat intervention;
• domestic hot water control thermostat intervention (when
the boiler is connected to an external cylinder).
- Check sealing efficiency of gas circuit and the internal system;
after 10 years of operation, it is necessary to replace the gas
valve, then checking the tightness of the gas circuit.
- Check the intervention of the device against no gas ionisation
flame control. Intervention time must be less than 10 seconds.
- Check for water leaks or oxidation from/on the fittings.
- Visually check that the drain of the water safety valves is not
blocked.
- Check that, after discharging system pressure and bringing it
to zero (read on boiler pressure gauge), the expansion vessel
load is at 1.0 bar.
- Check that the system static pressure (with system cold and
after refilling the system by means of the filling valve) is
between 1 and 1.2 bar.
- Check visually that the safety and control devices have not
been tampered with and/or shorted, in particular:
• temperature safety thermostat;
• water pressure switch;
• flue pressure switch.
- Check the condition and integrity of the electrical system
and in particular:
• the power supply wires must be housed in the cable glands;
• there must be no traces of blackening or burning.
Mini Eolo X 24 3 E
CO to nominal Q.
2
G 20 6.20% (± 0.5)
G 31 7.85% (± 0.5)
In addition to yearly maintenance, one must also
check the energy efficiency of the thermal system,
with frequency and procedures that comply with the
indications of the technical regulations in force.
CO to minimum Q.
2
1.80% (± 0.5)
2.45% (± 0.5)
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