Nova Florida VELA COMPACT - 3.6 Adaptation to Other Gas Types and Burner Adjustment; A) Maximum Heat Output Adjustment

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3.6 Adaptation to other gas types and burner adjustment
The boilers are manufactured for the gas specied upon order.
After sale transformation is to be exclusively implemented by qualied 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