Removal Of The Flue Hood; Removal Of The Spark Generator; Checks - Biasi RIVA ADVANCE HE M110.24SM/C Service Manual

Ignition and detection electrodes
18.6

Removal of the flue hood

1 Remove the condensing heat exchanger (see
section 5.2).
Q
O
Fig. 18.7
Using pliers, remove the spring O moving it
2
downwards and disconnect the rubber pipe P
(Fig. 18.7).
Remove the screws Q and remove the flue hood
3
R.
4 Assemble the flue hood carrying out the removal
operation in reverse order.
Fig. 18.8
38
Before reassembling ensure that the flue hood
gasket is correctly mounted (Fig. 18.8).
18.7
1
R
2
ignition electrodes
P
Fig. 18.9
3
4
When reassembling the spark generator be sure to
connect correctly the wires.
18.8
n
There is not a significant way to verify the integrity of the
Flue hood
spark generator.
gasket
When the fan turns but the burner does not light a poss-
ible cause is a faulty spark generator and it is advisable
to replace it to locate the fault.
n
1
2

Removal of the spark generator

Warning: isolate the boiler from the mains
electricity supply before removing any
covering or component.
Remove all the case panels and the sealed
chamber lid.
Disconnect the spark generator connector
coming from the control p.c.b, the electrodes wire
and the earth wire coming from the ignition elec-
trodes (Fig. 18.9).
wire
S
spark generator
connector
Unscrew the screws S and remove the spark gen-
.
erator
Assemble the spark generator carrying out the re-
moval operation in reverse order.

Checks

Check of the spark generator
Warning: isolate the boiler from the mains
electricity supply before removing any
covering or component.
Check the position of the electrode edges
Warning: isolate the boiler from the mains
electricity supply before removing any
covering or component.
Remove the ignition electrodes (see section 18.2)
Check for the correct distance between the me-
tallic edges of the ignition electrode (see
Fig. 18.10).
earth wire
S
C