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3.6 Adaptation to other gas types and burner adjustment
The boilers are manufactured for the gas specified upon order.
After sale transformation is to be exclusively implemented by qualified personnel, employing manufacturer designed accessories and
following the procedure and adjustment instructions for an accurate boiler setting-up.
Adapting the boiler from METHANE to LPG
- Remove the main burner;
- remove nozzles from main burner replacing them by new gas type correct diameter ones; WARNING! It is mandatory to install the
copper gaskets;
- re-install the main burner;
- on the electronic board, switch CM1 CH4-GPL jumper to GPL position (pic. 19).
Adapting the boiler from LPG to METHANE
- Remove the main burner;
- remove nozzles from main burner replacing them by new gas type correct diameter ones; WARNING! It is mandatory to install the
copper gaskets;
- re-install the main burner;
- on the electronic board, switch CM1 CH4-GPL jumper to CH4 position (pic. 19).
Pic. 19 – Methane – LPG selecting jumper
A) Maximum heat output adjustment
- Check gas mains supply and burner pressure (see no. 2 and no. 3 charts on page 14).
- remove plastic cap A (pic. 20), positioned on top on the coil of the modulating device, and protecting the screws of the pressure
adjusting device;
- connect a manometer to IN check (pic. 20), in order to verify the entering pressure and to the OUT check (pic. 20) in order to verify
the exiting pressure;
- fully turn clockwise no. 5 knob on the control panel (pic. 1), and open one or two domestic hot water taps for the boiler to operate at
max. output;
- turn CLOCKWISE the brass nut B for max. output adjustment (pic. 20) in order to increase nozzle pressure, and COUNTER-
CLOCKWISE in order to decrease nozzle pressure;
- for LPG operation, turn brass nut B fully CLOCKWISE.
Pic. 20 – Gas valve adjustment
D
OUT
IN
A
C
B
