7 Commissioning
Fig.64
Connecting the flue gas analyser
1
2
60
MW-3000044-01
1. Unscrew the left-hand plug, which corresponds to the flue gas
measurement point connection.
2. Connect the flue gas analyser to the connection on the left.
N N ote
Ensure that the opening around the sensor is completely sealed
when taking measurements.
Insert the sensor into the flue gas measurement point opening
to at least 8 cm for POWER HT+ 1.50 and POWER HT+ 1.70.
Insert the sensor into the flue gas measurement point opening
to at least 9 cm for POWER HT+ 1.90 and POWER HT+ 1.110.
3. Set the boiler's thermal flow rate to 100%.
See
Using the boiler according to thermal output, page 94.
4. Measure the percentage of CO
5. Compare the values measured with the set point values in the Con
trol and setting values table.
See
CO2 checking and setting values, page 62
Note
A tolerance of +/- 0.5% is acceptable.
6. If necessary, adjust the air/gas ratio using the gas flow rate adjust
ment screw.
See
Gas valves, page 62.
Note
Turn the gas adjustment screw clockwise to reduce the CO
content.
Turn the gas adjustment screw counter-clockwise to increase
the CO
content.
2
Note
A tolerance after adjustment of +/- 0.2% is acceptable, when the
front door is removed.
in the flue gases.
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