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English
EN.33.C.28.0904
Assembly instructions | LK Wired Room Control NC
Valve
When the actuator has been disconnected the
valve function can be controlled by pressing the
spring loaded valve spindle.
Fuse
Blown fuse; please check for incorrect wiring or
shortcircuits. If programmers, timers or other
switches are used, ensure that they are connected
to the pump-relay terminal only. DO NOT switch
the live on and off to the LK Connnection Box,
which must be kept permanently live.
Technical data
LK Connection Box NC
Article no.
241 81 18
Sizes
350 x 100 x 60 mm
Primary voltage
230 V
Secondary voltage
24 V
Power supply unit capacity
40 VA
Cable protection class
IP 20
Protection class
2
Primary fuse
200 mAt according
to IEC 127-2/V
Pump relay, volt-free relay
4 Amp
Max number of actuators / connection
box
12
Max number of actuators / terminals
5
Max number of thermostats / connec-
tion box
8
LK Actuator NC
Article no.
241 81 20
Sizes
44 x 47 x 53 mm
Voltage 24
V
Rated output
2,0 W
Cable protection class
IP 54
Ambient temperature
0-60 grader
LK Room Thermostat NC
LK Room Thermostat NC, Article no
241 81 09
LK Room Thermostat NC Dti, Article no
241 81 23
Sizes
75 x 75 x 27 mm
Voltage 24
V
Max number of actuators / thermostats
5
Temperature range
5-30 degrees
Cable protection class
IP 30
LK Clip Rail 12
Place a conduit along the long sides of the fl oor
heating installation facing the nearest short end.
Place the conduit at the short end between two
heating pipes and end it approx. 2 meters in. Seal
the end of the conduit with tape or similar to pre-
vent concrete from getting into the conduit. The
external sensor is slipped into the conduit before
pouring the concrete and is connected to the room
thermostat as instructed above.
Function control test
Once installation is complete a function control
test should be carried out.
Turn all the thermostats on fully and ensure
1.
that all LEDs are lit up on the thermostats
and the box. Wait for approx 6 minutes
and ensure that the status indicator for the
actuators is in its highest position.
Turn down all the thermostats to minimum,
2.
all the LEDs should be switched off and all
the actuators should be closed after approx
6 minutes.
Troubleshooting, room control
Connection box
The LED should light up when the thermostat is
turned on fully. If the LED does not light up en-
sure that there is a mains connection and that the
fuse for the box is intact.
Room thermostat
The LED is lit up when the room thermostat is re-
questing heat. Ensure that all wires are properly
connected. When the room thermostat is turned
on fully there should be a voltage of 24 V between
terminal 1 and 4.
Actuator
The top of the actuator is equipped with a status
indicator that indicates whether the actuator is
open or closed. When the status indicator is at the
top the actuator is open and vice versa. Actuation
time approx 6 minutes.
