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• Unscrew the screw O and lift the cover P
to release the cables from the cable gland
(Figure 5.20).
• Loosen the screws Q and lift the cover R
(Figure 5.20).
R
Figure 5.20
Connecting to the electric power supply
grid
• Connect the electric power supply cable
to the all-pole switch, respecting the cor-
respondence of the power line (brown
wire) and the neutral (blue wire) Figure
5.21.
• Connect the earth wire (yellow/green)
to an effective earthing system.
Electric
power supply
Figure 5.21
The earth wire must be longer
than the electric power wires.
- 36 -
INSTALLATION
O
P
Q
N
TA
The unit's electric power supply cable or
wire must have a minimum section of 0.75
mm
, be kept away from hot or sharp parts,
2
and comply with current technical stan-
dards.
5.9 Connecting a room thermostat
or zone valves
Connect the cable for the room thermostat
with a label in Figure 5.22.
Do not connect live cables to
the room thermostat cable.
Figure 5.22
The thermostat must have class II insulation
( ) or be correctly connected to the earth.
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