- 0
-
INSTALLATION
For conversion operate as follows:
- Remove the cover and open the sealed chamber.
- Undo the retaining screws (1) and remove the burner (2).
- Replace all the burner nozzles (3) with the nozzles
provided in the conversion kit, checking that the dia-
meter is as shown in the tables on pages 76-77-78,
and interpose the seals.
Then proceed as follows:
For the conversion from
G20
to
G30/G31
:
- Select the type of gas on the control panel.
- The boiler automatically adjusts programming of the maxi-
mum power and the ignition power for
G30
-
G31
; should
further adjustments be necessary, operate as described
in the paragraph “Adjusting the gas pressures”.
The minimum gas pressure at the burner must be
mechanically adjusted; disable the pressure regulator by
screwing down the nut (H) and continue as described on
the next page.
For the conversion from
G30/G31
to
G20
:
- Select the type of gas on the control panel.
- The minimum and maximum pressure must be mecha-
nically adjusted in the order described below.
- The boiler automatically adjusts programming of the
maximum power and the ignition power for
G20
; should
further adjustments be necessary, operate as described
in the paragraph “Adjusting the gas pressures”.
Adjusting the maximum pressure
The gas pressure at the burner must be checked throu-
gh the pressure outlet positioned on the gas valve outlet
pipe using a water pressure gauge or a micro pressure
gauge.
- Remove the protection cover (G).
- Screw down (to increase) or unscrew (to decrease) the
adjusting nut (H).
1
Retaining screws
2
Burner
3
Nozzles
4
Burner pipe
5
Seal
6
Possible gas baffle
(see pages 76-77-78)
7
Gas valve
OPERATION WITH DIFFERENT TYPES OF GAS
The boiler is set up and adjusted at the factory to operate with
G20
or
G30/G31
as indicated on the technical data plate
and the packaging. Should the boiler need to be used with a gas different from that for which it was set up at the factory,
a specific kit must be installed to be ordered separately.
