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8
GAS CONVERSION
8.1 Warnings
The operations for adapting the
boiler to the type of gas available
must be performed by an Author-
ised Service Centre.
The components used for adapting to the type
of gas available must only be done using origi-
nal spare parts.
For instructions regarding calibrating the boil-
er gas valve, refer to section "CHECKING THE
GAS REGULATION" on page 53.
8.2 Operations and gas setting
Check that the gas cock mounted
on the gas piping to the boiler is
closed and that the unit is not
powered.
• Remove the front panel of the body and turn
the control panel towards you as shown in
section "Maintenance" on page 60.
• Remove the clip A, unscrew the swivel joint
C and remove the gas pipe B (Figure 8.1).
Figure 8.1
• Convert the type of gas by correctly replac-
- 58 -
GAS TRANSFORMATION
A
B
C
ing the gas diaphragm (Figure 8.2), referring
to the "Technical data" section on page 24
(model M160.2025 SM/M) and page 27
(model M160.3035 SM/M).
Figure 8.2
Attention - for reassembly, carry
out the performed operations in
reverse order, being careful not to
ruin the gas pipe OR gasket when
the pipe is inserted in the aerotech
and perform the gas tightness test
after tightening the gas pipe swiv-
el joint (Figure 8.1).
The boiler is set in the factory to operate
with natural gas (G20).
To set boiler operation with LPG gas (G30 -
G31) carry out the following settings:
• Enter "programming mode" by pressing keys
15 - 16 - 17 (Figure 8.3) together for 10 sec-
onds until the LCD display indicates the let-
ters Pr alternating with code 01, indicating
entry in "parameter 01" (Figure 8.4).
Gas
diaphragm
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