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English
EN.33.C.28.0904
Assembly instructions | LK Wired Room Control NC
LK Room Thermostat NC, 24 V AC
The LK Room Thermostat NC should be installed
indoors 1.5 m above fl oor level. Avoid installation
where its function might be affected (e.g. direct
sunlight, vents etc.). Lit LED indicates that the
room thermostat is requesting heat. Wiring bet-
ween the LK Room Thermostat NC and the LK
Connection Box NC should be carried out using a
cable such as a signal cable EKKX 4 x 0.5 mm² in
which case one wire remains unused. The signal
cable is connected to terminals 1, 2 and 4 on the
room thermostat and to terminals 1, 2 and 4 in the
connection box.
LK Room Thermostat NC white and LK Room Thermostat
NC Dti silver grey.
When installing in a public area, a room thermo-
stat with a concealed temperature dial may be
used namely the LK Room Thermostat Dti. The
temperature dial is then placed inside the ther-
mostat cover.
Options
An LK Remote Sensor is used when regulating
the fl oor temperature. The sensor is placed in the
fl oor (refer to special instructions attached to the
room thermostat).
An LK Protection cover protects against external
damage to the LK Room Thermostat NC. The co-
ver is made of transparent Plexiglas.
LK External Temperature Sensor
LK External Sensor i intended for usage with LK
Room Thermostat NO or LK Room Thermostat
Dti NO when the fl oor temperature is to be ad-
justed.
Remote switching
The LK Control is a complete unit for outdoor tem-
perature dependent fl ow temperature control and
adapted for LK’s shunt programs. If LK Control is
used then the volt free pump relay of LK Connec-
tion box can be connected to LK Control, connec-
tions M and H1. By connecting LK Connection box
to the LK Control, gives the function that when all
actuators on the manifold is closed, LK Control will
close its Control valve (Shunt valve) and stop the
pump. LK Control will re open the control valve
and restarts the pump when one or several actua-
tors on the manifold open. For more information
see assembly instruction for LK Control.
LK Actuator NC, 24 V AC
LK Actuator NC closes when power is cut. A “sta-
tus” indicator is located on top of the actuator.
When the indicator is “up” the valve is open.
To aid assembly to the manifold, the actuators are
supplied “open”. Once an actuator is powered
(for a minimum of 6 minutes) an internal pin is
released and the actuator will now operate.
The actuators are wired to “actuator terminals”
of the mating control zone in the control box. Ter-
minals are marked with a symbol for actuators.
The LK Connection Box NC is fi tted with two dif-
ferent sized terminals for actuators. The lower
terminals are marked zone 5-8, these are inten-
ded for zones with one or two (max.) actuators.
The upper terminals are marked zone 1-4 and
have larger terminals to take up to four actuators
per terminal. A total of fi ve LK Actuators NC may
be connected to each terminal with the aid of ex-
ternal connector.
LK Actuator NC.
