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1.9 ELECTRICAL CONNECTION
The appliance has an IPX5D protection degree; electrical safety of the appliance is achieved only when it is connected properly to an effi-
cient earthing system, as specified by current safety standards.
The manufacturer declines any responsibility for damage or physical injury caused by failure to connect the appliance to an ef-
ficient earthing system or failure to comply with the IEC reference standards.
Open the control panel connections compartment
(Fig. 8)
To carry out electrical connections, all you have to do is open the connections compartment as follows.
Remove the casing:
1. Loosen the screw (a) at the bottom.
2. Rotate the control panel and then loosen the screw (b) that secures the control panel’s (d) cover.
3. Press the three hooks (c) on the cover (d).
4. Remove the cover (d) from the control panel (e).
At this point, it is possible to access the terminal board (f).
1
a
3
c
d
b
2
c
c
3
3
4
e
f
8
Also ensure that the electrical installation corresponds to maximum absorbed power specifications as shown on the boiler data name-
plate.
The boilers are supplied complete with a “Y” type H 05 VVF 3 x 0.75 mm
2
power supply cable, without plug.
The power supply cable must be connected to a 230V ±10% / 50Hz mains supply respecting L-N
polarity and earth connection; this network must also have a multi-pole circuit breaker with
class III overvoltage category in compliance with installation regulations.
No appliance pipes must ever be used to earth the electric system or telephone lines.
To protect from possible dispersions of DC voltage, it is necessary to provide a type A differen-
tial safety device.
If the power cable is damaged, contact a qualified company (e.g. the Authorised Technical As-
sistance Centre) for its replacement to avoid a hazard.
The power cable must follow the prescribed route (Par. 1.6);