baltur BGN 250P Manual De Instrucciones De Uso página 12

ELECTRICAL CONNECTIONS
The three-phase power supply line must have a switch with fuses.
Furthermore, the Standards require a switch on the burner power
supply line, outside the boiler room and in an easily accessible
position. For the electrical connections (line and thermostats),
follow the attached wiring diagram. 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) Loosen the screws (2) and, after removing the cable clamp
plate (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 gland.
3) Reposition the cable clamp plate as in figure 3. Turn the ec-
centric (6) so that the plate exerts a 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 that 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 access the control panel (8), unfasten the transparent door
(7), pressing gently in the direction of the arrows shown in figure
4, slide it a short distance to separate it from the lid.
5) To secure the transparent door on the panel properly, proceed
as indicated in figure 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
Fig. 1
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Fig. 2
Fig. 3
Fig. 4
Fig. 5