MODENA 80 E
30
7.12 Spark or fl ame detect electrode
(fi g. 37)
• Isolate gas and electricity supply
• Remove outer case (two screws bottom rear
corners)
• Open room sealed compartment and
combustion chamber
• Identify electrode from fi g. 37
• Unplug electrical connection "A" from sensing
electrode
• Remove fi xing screw and remove fl ame detect
electrode
• Remove the two fi xing screw from spark
electrode plate and remove it.
Spark
A
Flame
detect
Fig. 37
7.13 D.H.W. fl owmeter
• 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 fl ow 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 fl ow meter
• Using a 24mm open ended spanner, undo fl ow
meter unions "A" and "B" taking care not to
twist the copper tubing (access through base
panel).
• Remove flow meter, check + clean filter +
rest fi t to new fl ow meter.
• Reassemble in reverse order.
Fig. 38a
A
B
37
39
38
38
Key
37
Cold water inlet fi lter
38
Gasket
39
Cold water fl ow limiter
Take care on correct position of
components as reported in fi g. 38b
Fig. 38b
