Ferroli Domina 80 E Installation, Service And User Instructions Manual page 50

7.12 Spark or flame detect electrode
(fig. 43)
• Isolate gas and electricity supply
• Remove outer case (two screws bottom rear
corners)
• Open room sealed compartment and
combustion chamber
• Identify electrode from fig. 43
• Unplug electrical connection "A" from
sensing electrode
• Remove fixing screw and remove flame
detect electrode
• Remove the two fixing screw from spark
electrode plate and remove it.
7.13 D.H.W. flowmeter
• Isolate electricity and water supplies
• Open a hot water tap to release water
pressure from the domestic side of the
heat exchanger, close tap.
• Remove outer case (two screws bottom
rear corners).
• Remove two screws from control panel and
tilt forward
• Take off protective cover from main PCB
and unplug flow meter lead from terminal
X6
• Place a piece of cloth or some other
absorbent material over rear of control
panel to catch any drops of water that may
be released when removing the flow meter
• Using a 24mm open ended spanner, undo
flow meter unions "A" and "B" taking care
not to twist the copper tubing (access
through base panel).
• Remove flow meter, check + clean filter +
restrictor + fit to new flow meter.
• Reassemble in reverse order.
50
DOMINA 80 E
Flame
detect A
Fig. 43
A B
Fig. 44
Spark