Electrical Connections - baltur BT 250 DSG 4T Manual De Instrucciones De Uso

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:
• Remove the cover 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.
• 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.
• Reposition the cable float plate as in figure 3. Turn the cam (4) so
that the plate exerts sufficient pressure on the two cables, then
tighten the screws that fasten the plate. Finally connect the two 7
and 4 pole plugs.
!
The housings for the cables for the 7 and 4-pole
plugs are provided respectively for cable Ø 9.5÷10
mm and Ø 8.5÷9 mm, this ensures the protection
rating is IP 54 (Standard IEC EN60529) for the
electrical panel.
• To close the switchboard cover, tighten the 4 screws (1)
to a torque of approx. 5 Nm in order to ensure proper
sealing. Now, to gain access to the control panel (8),
release the clear door (7), by slightly prising with a tool
(e.g. screwdriver) in the direction of the arrows shown
in figure 4, let it slide shortly and then separate it from
cover.
• 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.
!
only professionally qualified personnel may open the burner electrical
panel.
Figure 1
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Figure 2
Figure 3
Figure 4
Figure 5