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– remove the screws (3) securing the control panel (4)
– move the panel (4) upwards (a) but keeping it in the side
guides (5) to the end of travel
– bring it forwards and down (b) until it is horizontal
4
b
3
– close the gas valve
– loosen the screw of the "mains pressure" point (6) and con-
nect a pressure gauge
– open the gas valve
– power the boiler by setting the main switch to "ON"
ON
– press the button
s
until "SUMMER" mode
lected
– press the buttons
o
and
>
at the same time for approximately
10 seconds until the message flashes on the display alter-
nating with the temperature of the delivery sensor and the
flashing symbols
o
and
>
– open one or more than one hot water tap
– press the button
– disconnect the pressure gauge, carefully close the pressure
– take a reading of the combustion data and measure the com-
– press the button
a
5
– take the combustion data reading
– press the button
Fig. 41
– close the hot water taps that were previously opened.
Gas supply pressure
6
7.7
Fig. 42
The MIA HE C10 models can work at G20 or at G30/G31 without
any mechanical transformation. It is necessary to select param-
eter "tS 0.3" (refer to "Parameter setting and display") and set it
on the basis of the type of gas to be used, and then fully perform
the "Automatic self-calibrating procedure" phase.
Fig. 43
l
has been se-
>
to make the boiler operate at maximum
power "Hi" and check that the mains gas pressure value on
the pressure gauge is correct
point (6), put the control panel back to the original position
and refit the front panel (2)
bustion efficiency
<
to make the boiler operate at minimum
power "Lo". The message on the display flashes alternating
with the temperature of the delivery sensor and the flashing
symbols
l
and
n
s
to exit the "Chimney sweep Procedure".
The boiler water delivery temperature will appear on the dis-
play
Type of gas
G20
Pressure
20
(mbar)
Gas conversion
G30
G31
30
37
105
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