HDG Turbotec 50 L, Operation Manual

Page: 88 / 100

7 Cleaning and maintaining the heating system – Procedure
88
2. Remove the cover of the air control units at the front of the boiler.
3. Pull both air control unit plugs (3) out of the plug board.
4. Release the four M6 nuts with an SW10 spanner and remove the
two air control units (2).
C
LEANING THE AIR CHANNELS
5. Release the four M6 nuts with an SW10 spanner and remove the
two air control lids (1).
6. Clean both air channels with an appropriate cleaning tool (e.g.
vacuum cleaner).
C
LEANING THE AIR CONTROL
UNITS
7. Clean the air box (1) and the two secondary air openings (3) using
a vacuum cleaner.
8. Check the two seals of the air control units (2).
9. Replace the seals if they are damaged.
10. Replace the air channel lids, air channel units and plug in the
reverse sequence.
The air control units are now installed.
Figure 7/18 - Removing the air control units
1
3
2
Figure 7/19 - Cleaning the fan units
2
1
3