28
Gas conversion
ATTENTION: the operations described below must be carried out only by qualified personnel
[authorized by ITALTHERM S.r.l.]
.
For gas conversion, use the nozzles supplied by boiler manufacturer only.
Using LPG, it is absolutely necessary to install a suitable pressure reducer upstream the boiler.
1.
Disconnect the boiler from the electrical supply. Remove the boiler cover as described in the para-
graph "Access to the inside of the boiler" on page 22.
2.
Access the main board and switch
SW1
(see also "Main board settings" on page 27) accordingly with
the available gas type:
•
OFF
for
Natural gas (G20),
•
ON
for
Butane (G30)
or
Propane (G31)
3.
Ensure that the inlet gas pressure complies with the required nominal pressure (see "Technical
data" on page 34) and that the gas flow is sufficient to guarantee the appliance correct work.
4.
Remove the pipe between the gas valve and the injectors bar.
5.
Remove injectors bar and replace the nozzles
*
with the ones suitable for the available gas
type, using a 7 mm. spanner (see figure). The
nozzles number and diameter is stated in the
table "Technical data" on page 34.
6.
Reassemble injectors bar and pipe, replacing
gaskets. Check, with burner ON, that there
are no gas leaks;
* Install the nozzles kit with the supplied
washers, although the existing nozzles,
factory fitted in the boiler, are originally
without washer.
7.
Verify, with burner ignited, the inlet gas pressure (see page 23).
8.
Check and if necessary adjust the gas valve maximum and minimum pressure (see page 23) and the
heating maximum power (see page 24).
9. Check that there are no gas leaks.
10.
Apply the sticker indicating the type of gas (supplied with the kit) on the suitable area on “WARN-
ING” label inside the boiler.
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