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The three-phase power supply line must have a switch with fuses. The regulations further require a switch on the burner’s
power supply line, outside the boiler room and in an easily accessed position. For the electrical connections (line and ther
-
mostats), follow the wiring diagram enclosed. To carry out the connection of the burner to the power supply line proceed as
follows:
1) Remove the lid by unscrewing
the 4 screws (1) in figure
1, without removing the
transparent door.
In this way the burner’s electrical
panel can be accessed. .
2) Slacken le screws (2) and,
after removing the cable
float (3), pass
the two 7 and 4 pole plugs
through the hole (see figure
2). Connect the power supply
cables (4) to the contactor,
connect the cable to ground (5)
and close the cable holder.
3) Reposition the cable float as in
figure 3. Turn the cam (6) so that
the float exerts sufficient pressure
on the two cables, then tighten
the screws that fasten the cable
float. Finally, connect the two 7
and 4-pole plugs.
IMPORTANT: the housings for the
cables for the 7 and 4-pole plugs are
provide respectively for cable
Ö 9.5÷0 mm and Ö 8.5÷9 mm, this
to make sure the protection rating is
IP 54 (standard IEC EN60529) for the
electrical panel.
4) To reclose the electrical panel
lid, tighten the 4 screws (1) with a
torque of about 5 Nm to ensure
the correct seal. At this point , to
be able to access the control
panel (8), unfasten the transpa
rent door (7), using slight touch
pressure in the direction of the
arrows in figure 4, move it the
short distance to separate it from
the lid.
5) to properly resecure the
transparent door on the panel
proceed as indicated in 5:position
the hooks at their hooking points
and (9) slide the door in the
direction indicated by the arrow
until it clicks. It is now well
sealed.
ELECTRICAL CONNECTIONS
Figura 1
Figura 2
Figura 3
Figura 4
Figura 5
Important: only qualified
technicians may open the
burner’s electrical panel.
