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LK Wired Room Control NC.
Valve exercise program
The connection box has a program to automati-
cally operate the actuators (and manifold valves)
daily to prevent seizure.
Pump connection
The connection box is equipped with an integra-
ted volt-free pump relay. The circulation pump
stops when all actuators are closed.
The pump restarts when any thermostat calls for
heat. There will be a slight delay with starting
and stopping. The valve exercise program will
also activate the pump.
Timers, programmers etc.
Important!
If a timer, programmer or other switch is to be
used they must be connected to the pump relay,
refer to wiring diagram below. DO NOT switch
the live on and off to the LK Connection Box,
which must be kept permanently live.
Design
LK Wired Room Control NC is used where nor-
mally closed (NC) actuators are preferred. A set
is LK Connection Box NC, LK Room Thermostat
NC and LK Actuator NC.
Room thermostats control the temperature in
each zone (e.g. room) via a signal through the
wire connection to the LK Connection Box NC
positioned next to the manifold. The manifold ac-
tuators are signalled via the connection box.
Settings/requirements
All distribution fl ows must be adjusted according
to the installation guide for the unit. The heat set-
tings for the control unit are regulated according
to the requirements of the heat system and the cli-
mate zone. A control zone consists of 1 LK Room
Thermostat NC that can control one or more un-
der fl oor heating areas each equipped with an ac-
tuator. A maximum of 5 LK Actuators NC can be
connected to 1 LK Room Thermostat NC.
LK Connection Box NC, 230/24 V AC
LK Connection Box NC.
The LK Connection Box NC comes equipped with
an integrated 230/24 V AC transformer. The box
is used for connecting and powering the LK Room
Thermostat NC and LK Actuator NC. The box
should be situated close to the manifold to avoid
extending the actuator cables. Up to 8 LK Room
Thermostats NC may be connected to the box and
up to 5 LK Actuators NC to each control zone, ho-
wever the overall total number of actuators per
box must not exceed 12. Mark the zones that con-
trol the rooms on the unit. This can be done most
conveniently on the attached labels. Each control
zone is equipped with an LED that indicates when
the room thermostat requests heat.
LK Wired Room Control NC
EN.33.C.28.0904
Assembly instructions | LK Wired Room Control NC
