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12.1 Checking the O
Measuring point O
2
Figure 11
°C
Adjustment screw O
Figure 12
2
2
The O
percentage is set in the factory. This has to be checked during inspection,
2
maintenance and in case of a failure.
This can be verified by means of the following action:
-
Set the external controls to call for heat;
-
Make sure the boiler is operational and can get rid of the heat it produces;
-
Calibrate the O
gauge;
2
-
Place the lance of the O
-
Press both + keys for 6 seconds.
-
The display shows the supply water temperature (blinking);
The boiler will immediately switch to the maximum heating capacity
-
The correct O
percentage = 4,7%
2
-
Let the measuring equipment perform the O
-
Adjust, if necessary, the adjustment screw to correct the O
Termination of the O
2
-
- Press the ESC key (- key). The device switches off.
This completes the procedure.
gauge into the flue gas test point (see Figure 11);
2
measurement:
measurement.
2
value (see fig. 12).
2
27
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