Atag iR 12

Installation & Servicing instructions ATAG iR-Range
43
- Turn the unit up side down and remove the burner cassette (8) from the ventilator unit;
- Check the burner cassette for wear and tear, pollution and any breakages. Clean the burner cassette with
a soft brush and vacuum cleaner. In the case of breakages, always replace the complete burner cassette
(8);
- Replace the gasket (9) between the burner (8) and upper casing (10) ;
- Replace the gasket (11) between the upper casing (10) and exchanger:
- Check the venturi (12) for pollution and clean them with a soft brush in combination with a vacuum
cleaner, if necessary.
If the inside of the boiler casing is heavily polluted with dust, it is likely that the fan impeller is also polluted.
To clean the fan, it has to be removed from the upper tray and the venturi. Clean the impeller with a soft
brush and a vacuum cleaner. Replace the gasket and take care that the new gasket is installed properly
when reassembling the fan parts.
Reassembly takes place in reverse order.
10
9
8
11
Figure 16.e
Figure 16.d
12
Figure 16.e