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ELECTRICAL CONNECTIONS
• Electrical lines must be kept away from hot parts.
• The burner installation is allowed only in environments with
pollution degree 2 as indicated in annex M of the EN 60335-
1:2008-07 regulation.
• Make sure that the electric line to which the unit will be con-
nected has frequency and voltage ratings suitable for the bur-
ner.
• The three-phase or single-phase power supply line must have
a switch with fuses. The standards also require a switch on the
burner's power line located outside the boiler room where it can
be accessed easily.
• The main line, the relevant switch with fuses and the possible
limiter must be suitable to support the maximum current absor-
bed by the burner.
• The mains supply connection requires an omnipolar switch with
a contact opening gap equal to or greater than 3 mm in accor-
dance with current safety regulations.
• Refer to the wiring diagram for electrical connections (line and
thermostats).
• Unsheathe the external insulating cover of the power cable to
the necessary extent for the connection, thus avoiding the wire
from coming into contact with metal parts.
To carry out the connection of the burner to the power supply line
proceed as follows:
• Remove the cover by unscrewing the screws (1), without re-
moving the transparent door. In this way the burner's electrical
panel can be accessed.
• Loosen the screws (2) and after removing the cable clamp plate
(3), make the 7 pole plug, the 4 pole plug and the modulation
control cable come through the hole. Connect the power supply
cables (4) to the contactor, connect the cable to ground (5) and
close the cable holder.
• Reposition the cable clamp plate. Turn the cam (6) so that the
plate exerts sufficient pressure on the cables, then tighten the
screws that fasten the plate. Finally, connect the related plugs
and modulation command cable, if installed.
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