Baxi LUNA DUO-TEC 1.70 User Manual page 38

11.3.3 COMBUSTION SETUP (HIGH-FIRE)
• Unscrew the exhaust flue plug at the exhaust flue test port.
• Insert the combustion analyzer into the exhaust flue test port, ensuring that the opening around the combustion analyzer probe
is completely sealed when taking measurements.
• Set the boiler to high-fire by pressing the two buttons
appear.
• Measure the percentage of O
• Compare the measured values with the values in the table below. Note: The front panel should be removed when comparing
the values.
• If necessary, adjust the gas/air ratio using the high-fire adjustment screw (V). Turn the screw clockwise to reduce the CO
and counterclockwise to increase it.
St ºC
O2/CO2 values at high-fire Natural gas (A)
Nominal value
Boiler type
O (%)
2
LUNA DUO-TEC
4.3
1.70 / 1.110
O2/CO2 at high-fire for Propane gas (E)
Nominal value
Boiler type
O (%)
2
LUNA DUO-TEC
5.7
1.70 / 1.110
11.3.4 COMBUSTION SETUP (LOW-FIRE)
• Unscrew the exhaust port plug at the exhaust flue test port.
• Insert the combustion analyzer into the exhaust flue test port, ensuring that the opening around the combustion analyzer probe
is completely sealed when taking measurements.
• Set the boiler to low-fire by pressing the the two
mode for high fire, press the (-) button several time until L3 is displayed on the screen.
• Measure the percentage of O
• Compare the measured values with the values in the table below. Note: The front panel should be removed when comparing
the values.
• If necessary, adjust the gas/air ratio using the adjustment screw (K). Turn the screw clockwise to increase the CO
counterclockwise to decrease it.
7703477.01 (1-03/18)
or CO in the flue gases.
2 2
ºCºFh
barPsi
rpm
kWµA
l/min
± 30
Permitted value
CO (%) O (%) CO
2 2
9.3 3.9 - 4.7 9.1 - 9.5
Permitted value
CO (%) O (%) CO
2 2
10.0 5.4 - 6.0 9.8 - 10.2
or CO in the flue gases.
2 2
simultaneously. The display will show H3 and the symbol
(%)
2
(%)
2
buttons simultaneously. If the boiler is already in the combustion setup
38
will
level
2
V
level and
2