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CHECKING THE GAS SETTINGS
Figure 7.9
• Scroll through the various parameters us-
ing 13 or 14 until the LCD display shows
the code P06, indicating entry into "pa-
rameter P06" (Figure 7.10).
Figure 7.10
• Press 17 (Figure 7.2) to show the value of
parameter P06 on the LCD display (Fig-
ure 7.11).
Figure 7.11
• Press 17 and the LCD display shows the
number 02, indicating activation of the
"chimney sweep function" at maximum
output.
• Press the 13 button (Figure 7.2) to confirm
the value entered and activate the func-
tion (Figure 7.12).
RESET
bar
RESET
bar
RESET
bar
Figure 7.12
• Press the 18 button (Figure 7.2) to exit
"programming mode" (Figure 7.13).
Figure 7.13
• Compare the value of CO
flue gas analyser with the CO
Q.nom in DHW mode as stated in section
"Technical data M270V.2025 SM" on page
22 and "Technical data M270V.2530
SM" on page 26.
• If the two values do not coincide, turn the
RQ maximum adjustment screw (A in Fig-
ure 7.8) for the gas valve and calibrate
the CO
to the same value specified in
2
the section "Technical data M270V.2025
SM" on page 22 and "Technical data
M270V.2530 SM" on page 26. Turn it
clockwise to decrease the CO
After setting the CO
imum (CO
the minimum (CO
must be checked.
• To exit the chimney sweeper, reset the
value of parameter P06 to 00 or wait 15
minutes with the boiler off (OFF).
• Close the domestic hot water cocks.
• Turn the boiler off by pressing the 18 but-
RESET
bar
RESET
bar
read on the
2
value at
2
.
2
to the max-
2
at Q.nom.), CO
2
2
at Q.min.)
2
- 57 -
at
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