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17 .3 Removal of the Fan
Warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
1 Remove all the case panels and the sealed chamber lid.
2 Disconnect the connectors C and the earth connection D
(Figure 17.4).
3 Disconnect the pipe E by the pressure test point F (Figure
17.4).
4 Unscrew the screw G and remove the bracket H (Figure
17.4).
E
D
C
A
H
G
Figure 17 .4
5 Remove the Fan by sliding it towards left (se the arrow in
Figure 17.4).
6 Assemble the fan carrying out the removal operations in re-
verse sequence.
Warning: Re-assembling the fan ensure that the
hooks around the inlet port of the fan hung correct-
ly on the flue hood.
Warning: After cleaning or replacement as detailed
above, if it deemed necessary to undertake a com-
bustion analysis, refer to the appropriate chapter
Maintenance of the installation instructions manual .
17 .4 Removal of the Air pressure sensor
Warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
1 Remove all the case panels and the sealed chamber lid.
2 Disconnect the wires I from the Air pressure sensor.
3 Remove the pipe J from the Air pressure sensor.
4 Unscrew the screws which hold the Air pressure sensor to the
frame.
5 Assemble the Air pressure sensor carrying out the removal
operations in reverse sequence.
Warning: to correctly connect the Air pressure sen-
sor, refer to Figure 17 .5 .
FAN AND AIR PRESSURE SENSOR
J
F
I
J
Figure 17 .5
Warning: After cleaning or replacement as detailed
above, if it deemed necessary to undertake a com-
bustion analysis, refer to the appropriate chapter
Maintenance of the installation instructions manual .
Pressure point P2
- 37 -
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