Installing The External Temperature Sensor; Electrical Connection Between The Boiler And The External Sensor - Biasi RINNOVA ADAPTIVE 25S User Manual And Installation Instructions

The thermostat must have class II insulation ( )
or be correctly connected to the earth.
Make the boiler cable exit using specific cable
glands R (Figure 5.24).
Connecting zone valves controlled by the
room thermostat
Ambient
thermostat
T
V
Zone valve with
micro contacts
Figure 5.23
Use the room thermostat terminals indicated
in Figure 5.22 to connect the zone valves. The
electrical conductors of the zone valve micro
contacts must be inserted into the "A and B" ter-
minals of the room thermostat terminal board as
shown in Figure 5.23.
The electric jumper between "A and B" must
be removed.
Do not connect live cables to the "A
and B" terminals.
The path of the ambient thermostat connec-
tion wires must follow the path indicated in
Figure 5.22.
Make the boiler cables exit using specific cable
glands R (Figure 5.24).
INSTALLATION
N L
R
Figure 5.24
5.13 Installing the external temperature
sensor
(optional)
The external probe must be installed on an exter-
nal wall of the building avoiding:
• Direct radiation of the sun's rays.
• Damp walls or walls where mould forms.
• Installation near fans, drain outlets or chim-
neys.
5.14 Electrical connection between the
boiler and the external sensor
To connect the external sensor to the boiler, use
electric cables with a cross section of no less than
0.50 mm 2 .
The electrical conductors for connecting the
external sensor to the boiler must go through
different channels to those for the mains
voltage (230 V), as they are supplied at a safe
low voltage and cannot exceed 20 metres in
length.
Use the terminals indicated in Figure 5.22 to con-
nect the external sensor.
The path of the external probe connection wires
must follow the path indicated in Figure 5.22.
Make the boiler cables exit using specific cable
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