10.2.8 Check the combustion
Checking combustion (maximum heat input)
1. Unscrew the plug in the flue gas measurement point.
2. Connect the flue gas analyser.
Important
Ensure that the opening around the sensor is completely sealed
when taking measurements.
Insert the sensor into the flue gas measurement point to at least
8 cm for SIRIUS THREE FS 50 – SIRIUS THREE FS 70 .
Insert the sensor into the flue gas measurement point to at least
9 cm for SIRIUS THREE FS 90 – SIRIUS THREE FS 110 .
3. Set the boiler's heat input to 100%.
4. Measure the percentage of CO
2
in the flue gases.
5. Compare the values measured with the set point values in the Control
and setting values table.
Important
A tolerance of +/- 0.5% is acceptable when the front panel is
closed.
6. If necessary, modify the air/gas ratio.
Fig.126 Connecting the flue gas analyser
2
MW
-3
0
0
0
1
1
0
-0
3
1
10 Maintenance
7609493 - v08 - 24072018
107
