20
EN.33.C.152.1405
Assembly instructions | LK Room Temperature Control ICS.2
External sensor – connection of external sensor
The room thermostats can be fitted with external
sensor, for example, by controlling based on the
temperature from the floor.
The external sensor, LK External Sensor ICS/S2 is
connected as follows:
1. The external sensor is to be installed in a
protective pipe, see separate instructions in
the
External sensor - location in different
underfloor heating systems.
2. Connect the sensor to the terminal block on
the back plate of the room thermostat, the
terminal is marked EXT.SENSOR.
3. Select the function the sensor is to have,
follow the instructions under the heading
External Sensors - select function
.
External sensor - select function
You can specify a function to apply to the room
thermostat when the external sensor is connected.
Made the adjustment as follows:
1. Press
Set
until flashes, confirm with
Set
.
2. Press the right arrow until
SENM
(Sensor
Mode) appears in the display, confirm with
Set
.
3. The display's symbol to the left flashes.
Select from the following operating modes:
Only thermometer flashing = only room temper-
ature. Confirm with
Set
. The external sensor is
inactive.
Thermometer and MAX flashing = room temper-
ature with the floor at maximum limit. Confirm
with
Set
, the unit switches to flash MAX and the
set maximum temperature. Set the maximum
temperature using the right/left arrow, confirm
with
Set
.
Thermometer and MIN flashing = room temper-
ature with the floor at minimum limit. Confirm
with
Set
, the unit switches to flash MIN flash and
set MIN temperature. Set the minimum tempera-
ture using the right/left arrow, confirm with
Set
.
Floor symbol flashing = only room temperature,
no effect from the room sensor. Confirm with
Set.
The external sensor is inactive.
Resistance table, LK External Sensor ICS.2
Temperature
Resistance kΩ ± 5%
0 °C
32.66
5 °C
25.40
10 °C
19.90
15 °C
15.71
20 °C
12.49
25 °C
10.00
30 °C
8.05
35 °C
6.53
40 °C
5.32
