LK Systems ICS.2 User manual

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Function
The room thermostat controls the temperature
in each room (zone) via wireless or wired signal
transmission to the receiver. The actuators for
each room/zone are operated via the receiver.
Self-modulation technique
In order for your underoor heating to be con-
trolled as energy efciently as possible, LK ICS.2
works with a self-modulation technique. The self-
modulation technique means that the ow in the
oor heating circuits is continuously optimised
based on the needs of the room and thereby pro-
vides better comfort and a more energy efcient
and environmentally smarter underoor heat-
ing system compared to systems with traditional
ON/OFF technology.
The features the system offers include the fol-
lowing:
• Self-modulation technique
• Access from internet via the LK Webserver
accessory*
• Room thermostat in high gloss white, high
gloss black or silver grey
• Adaptive week program
• Holiday function
• Logging/analysis function*
• Wired or wireless communication between
room thermostat and receiver*
• Valve exercising function
• Pump logics*
• Control of heat source*
• Fireplace function
• By-pass function
• Temperature range limits
* Applies to LK Receiver 8 ICS.2
Design
LK Room Temperature Control ICS.2 is a con-
trol system designed for LK Underoor Heat-
ing. The system is suitable for small, medium or
large building installations. LK ICS.2 has been
designed to provide high levels of comfort and
energy efcient heating systems thanks to its ad-
vanced self-modulation technique.
The system consists of LK Receiver ICS.2,
LK Room Thermostat ICS.2 and LKActuators 24 V.
Communications between the room thermostat
and the receiver can either be wireless or wired.
The receiver is available in versions for 1-channel
and 8-channels. The receiver with 1 channel can
communicatewith1roomthermostat.Thereceiver
with 8 channels can communicate with 1 to 8 room
thermostats.The receiverwith8channelscancom-
bine both wireless and wired communications.
If the system consists of more than one receiver,
the units can communicate wirelessly with each
other in order for common functions to work.
This includes controlling the circulation pump,
heat source, the ability to connect the system (LK
Webserver) to the Internet.
LK ICS.2 includes a variety of smart features such
as adaptive week programming, holiday func-
tions, re place function, the capability to connect
to an remote sensor. By using the LK Webserver
accessory, you can control your heating system
via the Internet from a mobile phone, tablet or
computer. LK ICS.2 can communicate via Mod-
bus protocol RS-485/RTU for connecting to the
property controller.
LK Room Temperature Control ICS.2
Assembly instructions | LK Room Temperature Control ICS.2
EN.33.C.152.1911

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Assembly instructions ICS.2
Requirements
The requirements for a properly functioning un-
deroor heating system is a weather-controlled
regulation system for the supply temperature
and a well implemented and documented adjust-
ment of the primary and loop ows.
Assembly of room thermostat and receiver
1. Install the receiver in vicinity of the heating
circuit manifold.
2. Install all room thermostat back plates on
the inner wall about 1.5 m above the oor.
Note which way is up, see arrow in the back
plate. Avoid locations that may affect the
room thermostat function (e.g. sun light and
ventilation).
3. For wired room thermostats, connect
2 x 0.5 mm2cable to the terminal in the
back plate marked ICS BOX. Fit the ther-
mostat cable to the green terminal that is
enclosed with the wired room thermostat.
Press the room thermostat's green terminal
block into the receiver's upper terminal
strip marked with thermostat symbols.
4. Snap the room thermostat into its back
plate.
5. Fit the actuator wire to the terminal block.
Press the actuator terminal blocks into the
receiver's lower terminal strip marked with
the valve/actuator symbol.
NOTE! Maximum of two LK Actuators per
terminal (An external terminal is required
for three actuators) and a maximum of
twelve LK Actuators per receiver 8 and ve
LK Actuators per receiver 1.
6. Run the actuator cables in the pull relief
grooves.
Room thermostat temperature mea-
surement
In order to achieve accurate room temperature
measurement it is important to prevent draft be-
hind the thermostat. If air is sucked in from an
adjacent room through the wall box or conduit,
the sensor may experience varying temperature
depending on wind direction and ventilation.
One way to avoid this is by sealing with reproof
insulation like mineral wool / glass wool.
Install the room thermostat's back plate about 1.5 m above
the oor. Note the arrow on the back plate indicating which
way is up. For the wired room thermostat, the cable is con-
nected from the receiver to the terminal marked ICS BOX.
Where necessary, the remote sensor is connected to the
EXT Sensor terminal.
1
ICS Box
1
M
L
A
1
12 34 5
32 54
2
M
1
M
BUS 3
M4 M5 M
Termostater
Ställdon
Remember to connect the wired room thermostats, if in-
stalled, to the upper terminal strip and the actuators to the
lower terminal strip.
EN.33.C.152.1911
Assembly instructions | LK Room Temperature Control ICS.2
Thermostats
Actuators

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Setup for room thermostats and
receivers
General
When setting up a system, the constituent receiv-
ers must be dened as the Master unit or Slave
unit depending only on the size of the system. A
network-connected system may consist of a max-
imum of one Master unit and seven Slave units.
In a system with only one receiver, this needs to
be programmed as a Master unit. On delivery, the
receivers are in Slave mode and ready to be used
in a network.
In systems consisting of multiple receiver units,
the units can communicate wirelessly with each
other in a network. The wireless network enables
common functions such as setting System Clock,
Holiday Function, By-Pass Function, Pump Con-
trol etc. to be set via the settings menu from any
room thermostat in the system. The wireless net-
work also enables all units to be controlled and
monitored over the internet using the LK Web-
server accessory.
If a network is to be established between a
number of receiver units, it is recommend-
ed that the receiver unit which will com-
prise the Master unit is positioned as cen-
trally as possible in the system. This is to
ensure that the wireless connection with all Slave
units is stable. If the distance is too long for a
stable connection to be established, the sys-
tem can be divided into separate subsystems.
Or as an alternative solution, each individual
receiver unit can be programmed as Master
unit, thereby becoming a ”stand-alone” system.
Check to ensure the antenna is connected
properly.
Power the receiver.
Setup for Master unit
Program one receiver unit as Master unit. In
systems with multiple receiver units, remember
to select a centrally positioned receiver unit as
Master unit for a stable connection with its Slave
units. Even in systems with just one receiver unit,
this unit has to be programmed as Master.
Setup as Master unit by holding the L and A
buttons until the lights for L and all channel
LEDs lights are lit with a green light. This shows
that this unit is set as the Master unit.
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Assembly instructions | LK Room Temperature Control ICS.2

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Conrm the setup of the Master unit by pressing
the L button once. This turns off all lights and
concludes the Master unit setup.
Remember to:
- mark the unit as Master unit on the label on
the unit's cover.
Establishing a wireless network
NB! stages 5-8 are only to be implemented in sys-
tems with multiple receiver units that are to com-
municate in a network.
Set the Master unit to setup mode by pressing
the L button until the light is solid green.
The picture shows a Slave unit that has been allocated
order number 2.
Press the L button on the optional Slave unit
until the L light turns orange.
The serial number on the Slave unit also
appears by one of the lights for channel
2 to 8 lighting green.
If you wish to verify that a receiver unit is setup as
well as its serial number on a network, see section
Checking the network under heading Troubleshoot-
ing.
Conrm the setup of the Slave unit by pressing
the L button. This turns off all lights in the Slave
unit.
Repeat steps 6 & 7 for other Slave
units if installed in the system.
Remember to:
– ensure that the Master unit's L light lights green
continuously during the setup phase for all Slave
units.
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Assembly instructions | LK Room Temperature Control ICS.2

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When all slave units have been programmed,
the setup is completed by pressing the
Master unit's L button once.
All the lights on the Master unit should now
turn off.
Check that all lights are off on all units to en-
sure that nothing can interfere with the contin-
ued installation of the system.
Setup of room thermostats
Prepare the system's room thermostats.
Wireless room thermostats:
Remove the plastic insulation from the battery
(marked in red circle). The room thermostat
display will show RUR.
Wired room thermostat:
Check that the room thermostat is connected to
the receiver. The room thermostat display will
show RUW.
Note: In general, the installation of the room
thermostats is the same whether it is a wireless
or wired connection to the receiver.
Hold the L button in until the L light is solid
green on the receiver that the room thermostats
are to undergo the setup process for.
This step prepares the receiver for
setup of the room thermostats.
Press and hold SET in until the display shows
MATE on the room thermostat that is to under-
go the setup process.
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Assembly instructions | LK Room Temperature Control ICS.2

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The L light changes to orange and the channel
lights change to green.
Choose the channel/channels that the room
thermostat is to control by pressing the corre-
sponding channel button (1 - 8). The selected
channels ashes green.
Channels already occupied have a solid orange
light.
Once all the required channels have nished
the setup process, you conrm by pressing the
SET button once.
The display will then show SYNC to show that
it is synchronising with the receiver (this may
take a while).
If the room thermostat takes a long time to syn-
chronise, this synchronisation process can be
sped up by pressing the SET button once.
Selected channels (actuator outputs) will be shown
in the room thermostat’s display with their channel
number (1-8).
Once synchronisation is complete, the room
thermostat shows standard mode with room
temperature and other information. This con-
rms that the setup is complete.
Worth knowing:
The channel/s (actuator outputs) for which the room
thermostat has been programmed are shown in the
display with channel number (1-8) under the room
temperature display. The display’s house symbol
shows the receiver unit for which the room thermo-
stat is programmed to with an order number (1-8).
Repeat steps 11 to 14 for each room thermostat
that must be set up for this receiver.
Ensure that the selected receiver's L light re-
mains lit for the setup of all room thermostats.
When all the room thermostats have nished
the setup process for the receiver in question,
the setup process is completed by pressing the
L button. Ensure that the L light goes out.
Repeat steps 10 to 16 for other receivers (slaves)
if installed in the system.
For settings/adjustments of the room thermo-
stat or receiver, see more under section
LK Receiver and Room Thermostat.
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Assembly instructions | LK Room Temperature Control ICS.2

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Remote control av LK Receiver
8 ICS.2
There are various solutions for remote control of
LK Room Temperature Control ICS.2. The vari-
ous options available for remote control of LK
Room Temperature Control ICS.2 is described
below.
Simple remote control of LK ICS.2
LK Receiver 8 ICS.2 can easily be managed by re-
motely controlled by closing its two-pole setback
contact. The simplest way to close the setback
contact is via a circuit breaker/relay or, alter-
natively, via a GSM module which is controlled
by a mobile phone. When the setback contact is
closed, the room control reduces the room tem-
perature for all room thermostats to a lower tem-
perature, the so-called setback temperature. The
preset setback temperature is 12° C, but it can
be changed in the respective room thermostat.
LK Webserver
Using the LK Webserver accessory, you can eas-
ily control your underoor heating system re-
motely via a mobile phone, tablet or computer.
The webserver's user interface is easy to manage
and provides a good overview of the underoor
heating system. Alarms, if any, are displayed via
the alarm icon, and information about the alarm
is received in plain text.
LK Webserver can also be used as a wireless com-
munications bridge. This function is used when
Internet in the property is not available at the un-
deroor heating installation's receiver. A wireless
communication can then be established between
two LK Webservers. The rst web server is in-
stalled at the underoor heating installation's re-
ceiver and the other one at the building's Internet
connection.
The web server located at the receiver will now
operate as a wireless communications bridge to
the Webserver with an Internet connection.
More information about LK Webserver is avail-
able on our website, www.lksystems.se.
Building automation
LK Room Temperature Control ICS.2 can be in-
tegrated into a building's comprehensive control
system. LK ICS.2 communicates via the Modbus
protocol RS485/RTU.
LK Room Temperature Control ICS.2 communi-
cates “point to point” with the network's BMS.
LK Systems provides on request documenta-
tion that describes the communication protocol,
which makes it possible to control/read all of the
system's features via Modbus.
Modbus ICS.2 technical data
Protocol Modbus RTU via RS-485
Modbus address of the
unit
1-247
Speed (Baud rate) 9600, 19200, 38400
Parity Odd, Even, None
Number of Stop bits 1, 2
Number of Data bits 8
Default setting is underlined
EN.33.C.152.1911
Assembly instructions | LK Room Temperature Control ICS.2

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MEM input
The receiver is tted with a MEM input (USB type
A) that is primarily used when you need to log
into the system. Measurement data is sent to the
LK ICS MEM Stick once a minute. It is possible to
easily check/analyse the system using measure-
ment data and the LK ICS.2 Analyzer software.
1. Insert the LK ICS MEM Stick into the MEM
input.
2. Information transfer is completed when the
green U light lights continuously.
3. Remove the LK ICS MEM Stick when log-
ging is complete.
4. Transfer the information to the LK ICS.2
Analyzer to see how the measurement data
has been logged.
The LK ICS MEM Stick is an accessory that can be
ordered through LK’s retail dealers. The LK ICS.2
Analyzer can be downloaded free of charge from
LK’s website, www.lksystems.se.
The text le SYSNFO.TXT is among the informa-
tion that is saved. This le can be viewed in a
computer without special software and contains
system information that can be of assistance dur-
ing troubleshooting. Program version 2.00 pro-
vides a summary of the receiver zones as well as
help texts which interpret the signal strength to
the installed units.
Setback input
The unit is equipped with an input for centralised
temperature reduction via, for example, a GSM
Switch, which can be operated with a mobile
phone. A closed contact provides a centralised
reduction of all room thermostats in the system.
When enabled, all room thermostats show EXT in
their displays, and the temperature is lowered to
12 °C for all rooms/zones. The temperature can
be adjusted; read more in section Settings/Func-
tions.
LK Receiver 8 ICS.2
LK Receiver 8 ICS.2
Functional Description
LK Receiver 8 ICS.2 has 8 channels which means
that up to 8 LK Room Thermostats ICS.2 can be
assigned/connected to the receiver unit.
The Receiver collects data from each room ther-
mostat and sends control signals to the LK Actua-
tors. As the communication between the receiver
and actuators is via a cable, the receiver should be
placed close to the underoor heating manifold.
Switch NO/NC function
If necessary, the receiver can be adapted to cur-
rentless closed (NC) or currentless open (NO) ac-
tuators. This adjustment is done by moving the
NC/NO jumper to the correct position as shown
in the picture below.
Restart the receiver after the change.
EN.33.C.152.1911
Assembly instructions | LK Room Temperature Control ICS.2

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LK Receiver 8 ICS.2, overview
UL
A
1
12 374568
32 87654
230VAC
FUSE
BOILERPUMP
2
M
1
M
BUS
SETBACK
Pwr
3
M4 M5 M6 M7 M8 M
NC
T
NO
RF MEM
1
17
3
4
7
82
9 10
16 15
14 13 12
56
11
LK Receiver 8 ICS.2
No. Name Description
1 U button Used if the unit software needs updating.
2 A button Used in combination with other buttons to enable alternative functions.
3 L button Enables/disables setup mode.
4 Button 1-8 Buttons 1-8 are used to select the required channel for setup.
5 Thermostat input Thermostat input for connecting wired LK Room Thermostats ICS.2 W
(Min. cable area 2 x 0.5 mm2).
6 Actuator output For connection of LK Actuator 24V (max 2 actuators per output).
7 Power supply The unit is connected to 230 V AC via a factory-installed cable.
8 Fuse Fuse 230 V AC, T200mA. Cut the power supply before changing the fuse!
9 Pump relay Potential free relay contact for control of the circulation pump.
10 LK Relay 1 ICS.2 Potential free relay contact for control of the heat source.
11 Strain relief Groove for relief of cables.
12 Modbus connection For connection of LK Webserver or connection of BMS (min. cable area 3 x 0.5 mm2).
13 Jumpers:
Actuator type NO/NC
Modbus termination T
NOTE! Restart the receiver after changing the jumper.
- For adaptation of the unit to NO or NC actuators.
- Terminated on delivery in mode T. Disconnect the termination resistance of intermediate units
in a Modbus circuit by moving the strapping to the left.
14 Setback input A closed contact provides centralised lowering of all room thermostats in the system.
15 MEM input For logging of measurement data or updating software.
16 Antenna input For connecting the unit's antenna.
17 Antenna For communication with the wireless room thermostats and the receivers when they are con-
nected in a network. LK Antenna Cable ICS.2 allows you to extend it to 10 metres.
EN.33.C.152.1911
Assembly instructions | LK Room Temperature Control ICS.2

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Boiler Relay
It is possible to control the system’s heat source
via the unit’s boiler relay. The relay is located un-
der the protective cover, protecting from danger-
ous voltage.
NOTE!
Cut all incoming voltage to the unit before
opening the protection cover. Remember
that the relay for pump and heat source are
powered from an external power supply
which must also be cut.
Note that the relay contact is potential-free which
means that the relay contact must be powered
from an external source (NOTE: Not from the
receiver's power supply). The relay activates the
heat source about 6 minutes after any channel
has called for heat. When the relay is enabled, the
Boiler LED lights.
See the circuit diagram below.
8
8
230VAC
FUSE
BOILERPUMP
7
M8 M
Boiler
L N
~ ~
Wiring diagram for connecting the heat source to
receiver 8.
Pump Relay
Receiver 8 has a potential-free pump relay for
controlling the system's circulation pump, for
example a pump in a shunt unit. The relay is lo-
cated under the protective cover, protecting from
dangerous voltage.
NOTE!
Cut all incoming voltage to the unit before
opening the protection cover. Remember
that the relay for pump and heat source are
powered from an external power supply
which must also be cut.
Note that the relay contact is potential-free which
means that the relay contact must be powered
from an external source (NOTE: Not from the re-
ceiver's power supply). The pump activates the
heat source about 6 minutes after any channel
has called for heat. When the relay is enabled the
Pump LED lights. The pump is run once a day
to prevent the pump from jamming during long
periods of downtime, e.g. summertime.
8
8
230VAC
FUSE
BOILERPUMP
7
M8 M
L N
~ ~
P
Wiring diagram for connecting the pump to receiver 8.
EN.33.C.152.1911
Assembly instructions | LK Room Temperature Control ICS.2