Immergas MINI EOLO 28 3E - Yearly Appliance Check and Maintenance

37
INSTALLER
USER
MAINTENANCE TECHNICIAN
TECHNICAL DATA
3.3 Yearly appliance check and maintenance.
e following checks and maintenance should be
performed at least once a year to ensure operation,
safety and eciency of the appliance over time.
- Clean the ue side of the heat exchanger.
- Clean the main burner.
- Visually check the ue hood for deterioration or corrosion.
- Check correct lighting and operation.
- Ensure correct calibration of the burner in domestic water
and central 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.
- Check sealing eciency of gas circuit and the internal system;
aer 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
ame control. Intervention time must be less than 10 seconds.
- Check for water leaks or oxidation from/on the ttings.
- Visually check that the drain of the water safety valves is not
blocked.
- Check that, aer 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
aer relling the system by means of the lling 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;
• ue 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.
CO
2
at Nominal Q. CO
2
at Minimum Q.
G 20 6.90 % (-±-) 2.6 0% (-±-)
G 31 7. 6 0% (-±-) 3.10% (-±-)
O
2
at Nominal Q. O
2
at Minimum Q.
G 20 8.50 % (-±-) 16.20% (-±-)
In addition to yearly maintenance, one must also
check the energy eciency of the thermal system,
with frequency and procedures that comply with the
indications of the technical regulations in force.