Converting The Boiler To Other Types Of Gas - Immergas EOLO STAR 24 4E Instructions And Warnings

3.7 CONVERTING THE BOILER TO OTHER TYPES OF
GAS.
The gas conversion operation must be carried out by
an authorised company (e.g. Authorised Technical
Assistance Service).
If the appliance needs to be converted to a different gas type to
that specified on the data plate, request the relative conversion kit
for quick and easy conversion.
To convert to another type of gas the following operations are
required:
- disconnect power to the appliance;
- replace the main burner injectors, making sure to insert the
special seal rings supplied in the kit, between the gas manifold
and the injectors;
- re-power the appliance;
- select, using the boiler keyboard, the gas parameter type (P01)
and select (nG) in the case of methane supply or (LG) in the
case of LPG supply and save it;
- Carry out complete calibration of the gas valve:
• adjust the boiler nominal heat output;
• adjust the boiler nominal heat output in domestic hot water
phase;
- adjust (if necessary) the minimum heat output of the boiler in
the heating phase (Parag. 3.11 parameter P05);
- adjust (eventually) the maximum heating power (Parag. 3.11
parameter P06);
- after completing the conversion, apply the sticker, contained in
the conversion kit, near the data nameplate. Using an indelible
marker pen, delete the data relative to the old type of gas.
These adjustments must be made with reference to the type of
gas used, following the indications given in the table (Par. 4.1).
Checks following conversion to another type of gas.
After having made sure that the conversion is complete and that
the calibration has been successful, you must make sure that:
- there is no flame in the combustion chamber;
- the burner flame is not too high or low and that it is stable (does
not detach from burner);
ATTENTION:
The pressure testers used for calibration
should be perfectly closed and there
should be no leaks from the gas circuit.
Maintenance interventions must be carried out by
an authorised company (e.g. Authorised After-Sales
Technical Assistance Service).
Burner adjustment must be carried out using a differential "U"
or digital type pressure gauge connected to the pressure socket
located above the sealed chamber and the gas valve pressure point,
keeping to the pressure value given in the table according to the
type of gas for which the boiler is prepared.
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