23
912.822.1 - GB
InstructIons pertaInInG to the InstaLLer
12. Making the electrical connections
Electrical safety of the appliance is only guaranteed by correct earthing, in accordance with the current stan-
dards and regulations.
Connect the boiler to a 230V by means of the three-pin cable supplied with it make sure that the polarities are
correctly connected.
Use a double-pole switch with a contact separation of at least 3mm in both poles.
In case you replace the power supply cable fit a HAR H05 VV-F’ 3x0.75mm
2
cable with an 8mm diameter
maximum outer sheath.
IMPORTANT: Check that the overall current drawn by accessories connected to the appliance is less
than 2 amp. If the value is greater, a relay must be wired between the boiler control circuit board and
the accessories drawing the higher current.
12.1 terMinal blocks access
• Isolate power to the boiler with the two-pole switch.
• Remove the top facia panel cover (which is held by magnets).
• Unscrew the two screws holding the facia panel in place.
• Swing the facia panel forwards.
Main terminal block M1
• Remove the clip-on cover from terminal strip M1.
• The main terminal block incorporates a fast blow 3.15 A fuse (figure 10). Remove the black fuse holder to
check and/or replace the fuse.
Terminal block M2
• Unscrew the fixing screw and remove the cover from terminal block M2.
Terminal block M3
• Unscrew the fixing screws and remove the main cover.
Figure 10
020523_0400
Terminal Block
M1
Terminal Block
M2
Cover
Cover
Facia panel