ELECTRICAL CONNECTIONS
•
It is advisable to make all connections with flexible electric wire.
•
Conductor cross-sections not specified are to be considered as
0,75 mm².
•
The power lines must be distanced from the hot parts.
•
The burner can be installed exclusively in environments with pollu
-
tion degree 2 as specified in Standard EN 60204-1.
•
Make sure that the power line has frequency and voltage values
suitable for the burner.
•
The three-phase or single-phase power supply line must have a
switch with fuses.
•
The regulations further require a switch on the burner power supply
line, to be positioned outside the boiler room and easily accessible.
•
The main line, the relevant switch with fuses and the possible limi
-
ter must be suitable to support the maximum current absorbed by
the burner.
•
An omnipolar switch with a contact opening gap equal or above 3
mm is required for the mains supply connection, in accordance with
current safety regulations.
•
Refer to the wiring diagram for electrical connections (line and ther
-
mostats).
•
Remove the external insulating seal of the supply pipe necessary
for the connection, preventing the cable to touch 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 removing
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 con-
trol cable come through the hole. Connect the power supply cables
(4) to the contactor, secure the ground cable (5) and tighten the
relating cable gland.
•
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 modu-
lation command cable, if installed.
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1
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2
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ENGLISH