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6.13 Installation of the external
temperature probe (optional)
The external probe must be installed on the
external wall of the building avoiding:
• Direct radiation of solar rays.
• Humid walls or walls subject to the forma-
tion of mildew.
• Installation near to fans, drain outlets or
chimneys.
6.14 Electric connection between
the boiler and the external
probe
To connect the external probe to the boiler
use electric cables with a section no less
than 0.50 mm
2
.
The electric cables for connecting the
external probe to the boiler must cover
different channels to the voltage ones
(230 V), since they are powered at a safe-
ty low voltage and their maximum length
must not exceed 20 meters.
Use the clamps indicated in Fig. 6.30 to
connect the external probe.
- 56 -
INSTALLATION
power supply
thermostat
Fig. 6.30
The route of the external probe's connec-
tion wires must follow the route indicated in
Fig. 6.17.
Allow the cables to exit the boiler by using
the relevant cable clamps R (Fig. 6.18).
6.15 Remote electric connection
Use the clamps indicated in Fig. 6.30 to
connect the remote.
To connect the remote control to the boiler,
refer also to the REMOTE CONTROL book-
let.
Do not remove the electric jumper con-
nected on the ambient thermostat termi-
nal block between "1 and 3" Fig. 6.30.
Remote
External
Probe
Electric
Ambient
(optional)
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