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5.9 Electrical connections
• Unscrew the screws K and remove the front
panel L by pulling it towards you Figure 5.23.
K
L
Figure 5.23
• Unscrew the screw M (Figure 5.23) and turn
the control panel N, as shown in Figure 5.24.
To access the electric power supply, remote
and external sensor terminal boards and the
control board, proceed as follows:
• Unscrew the screw O and lift the cover P
- 36 -
INSTALLATION
• Loosen the screws Q and lift the cover R
M
Figure 5.24
Connecting to the electric power supply
K
grid
• Connect the electric power supply cable
• Connect the earth wire (yellow/green) to
Figure 5.25
The unit's electric power supply cable or wire
to release the cables from the cable gland
(Figure 5.24).
(Figure 5.24).
O
R
to the all-pole switch, respecting the corre-
spondence of the power line (brown wire)
and the neutral (blue wire) Figure 5.25.
an effective earthing system.
Electric
power supply
The earth wire must be longer
than the electric power wires.
P
Q
N
TA
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