Atag iR 12

Installation & Servicing instructions ATAG iR-Range
39
15.1 Checking the CO
2
The CO
2
percentage is set in the factory. This has to be checked during inspection, maintenance and
in case of a failure.
Thiscanbeveried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uegasanalyser;
- Placethelanceoftheuegasanalyserintotheuegastestpoint(seeFigure15.1.a);
- Press both + buttons for 6 seconds;
- Whentheamesymbolappearsinthedisplaypressboth+buttonsagainfor6seconds;
- The display shows the supply water temperature (
appears in the display);
The boiler will switch to maximum power of the heating capacity
- Press 1x the eco- button;
the display shows XX% (heating capacity)
- Leave measuring CO
2
to the measuring equipment.
Natural gas Propane
- CO
2
percentage at full load = 9.0% (-0.4%, +0.6%) 10.3% (+/- 0.6%)
- If required, you may turn the setting screw to set the correct CO
2
percentage.
(refer to Figure 15.1.b).
Measuring point CO
2
Figure 15.1.a
Adjustment screw CO
2
Figure 15.1.b
°C