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placed as high as possible in the concrete layer. Alternatively,
the sensor can be embedded directly in the floor. The sensor
cable must be led through a separate conduit or segregated
from power cables.
The floor sensor must be centred between loops of heating
cable.
The sensor cable may be extended up to 30 m by means of
a separate two-core cable. Two vacant wires in a multi-core
cable used, for example, to supply current to the floor heating
cable must not be used. The switching peaks of such current
supply lines may create interference signals that prevent
optimum thermostat function. If a shielded cable is used, the
shield must not be connected to earth (PE). The two-core
cable must be placed in a separate pipe or segregated from
power cables in some other way.
Mounting of thermostat with built-in sensor
The room sensor is used for comfort temperature regulation
in rooms. The thermostat should be mounted on the wall ap-
prox. 1.5 m above the floor in such a way as to allow free air
circulation around it. Draughts and direct sunlight or other heat
sources must be avoided.
Fig. 4 - Opening the thermostat
1. Slide the power button down to O “0”.
2. Release the front cover ONLY use the supplied display
disassembly tool for removing the front cover. Insert the tool
in the slot at the bottom of the front cover, push it upwards
and support the front cover.
3. Then carefully pull the front cover away, initially from the
lower part of the thermostat, then from the upper part of the
thermostat.
Fig. 5 - Connections
Connect the wires in accordance with the diagram. The wires
must be connected as follows:
Term. 1: Neutral (N)
Term. 2: Line (L)
Term. 3-4: Heating cable (polarity neutral), max. 16 A
Term. X: Do not connect
Term. 5-6: External floor sensor
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