Electrical Connections; Important - baltur BT 250 DSG 4T Manual Del Usuario

ELECTRICAL CONNECTIONS

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 thermostats),
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 , 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 Ø 9.5÷10 mm and Ø
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 transparent 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.
Important:
!
only qualified technicians may open the burner's elec-
Figura 1
trical panel.
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Figura 2
Figura 3
Figura 4
Figura 5