LK ICS-RF8 Assembly Instructions Manual

LK Floor Heating | Assembly Instructions | LK Room Temperature Control ICS-RF8

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LK Room Temperature Control ICS-RF8

Design

LK Room Temperature Control ICS-RF8 is a wireless control system designed for LK Floor Heating. LK ICSRF8 consists of LK Room Thermostats ICS-RF, an LK Receiver unit ICS RF8 and LK Actuators.

Function

Room thermostats regulate the temperature of each room (zone) via wireless signal transmission to the receiving control unit. The actuators for each room/zone are controlled by the receiver unit. The system has several "smart features" such as adaptive weekly programming, holiday functions, the ability to connect external sensors, external temperature set back via GSM switches, and more. For further information, please see the In-depth description for LK ICS-RF8. The system benefits from:

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• Timeless Scandinavian design

• Thermostats with LCD display

• Self-modulation technology as a standard

• Thermostats in gloss white, gloss black or silver

• Remote control via mobile phone (as addition).

• Adaptive weekly programming

• "Holiday" function

• Logging/function & system analysis

• Wired & wireless communications in the same control box

• Valve exercise program

• Pump logic

• Heat source (e.g. boiler) control

• Simple programming

• Easy installation

Installation instructions

Quick Guide - installing receiver units and thermostats

1. Install the receiver adjacent to the Manifold. Ensure there is enough space below the unit to remove the lid and that it is possible to connect LK ICS MEM Stick vertically downwards. If the receiver is mounted in a steel cabinet it is recommended that the radio link is placed outside the cabinet. This is easily done with LK Antenna Cable ICS (accessories).

Detach back-plate from thermostat by pushing central catch at the bottom of the back-plate (use screwdriver, pen or similar). (Refer to illustration below to open the thermostat.) Fix thermostat back-plates to internal walls approximately 1.5 m above the floor. Take care to orientate correctly; see arrow on the back.

Avoid locations that will affect thermostat operation (e.g. direct sunlight and draughts).

4. Next cut LK Actuator connection cable to length (Receiver to manifold).

5. Connect each actuator cable to a green terminal plug (NOTE: maximum two LK Actuators per terminal and a maximum of 12 LK Actuators per receiver unit).

6. Insert one terminal plug per actuator(s) into bottom row of Receiver unit.

7. Run actuator cables through anti-tension track.

8. Place the Radio link in its holder inside the receiver.

9. Activate thermostats according to Quick Guide – programming the thermostats.

10. Once the programming is completed click the thermostats body into the back-plate.

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Quick Guide – programming the thermostats

1. Check that the radio link cable is connected to the receiver's RF input

2. Press the L key on the receiver unit for at least 3 seconds, the L-LED will light green.

3. Remove the plastic insulation from the thermostats battery compartment; the thermostat display shows RUR.

Press Mode until shows in the display.

The receiver units’ L-LED switches to yellow and selectable channels light up green.

6. Select a channel by pressing a desired channel key; the selected channel flashes green.

7. Confirm by pressing Mode on the thermostat; the thermostat switches to "normal view".

8. Repeat steps 3-7 for other thermostats.

9. Once the programming is complete, press the L key in the receiver unit once to finish the sequence.

NOTE:

If necessary, the thermostat and the receiver unit can be restored to factory settings. See instructions under the heading Reset.

NOTE:

If the installation consists of several receivers which are controlling a single pump, please read section titled BUS first.

NOTE:

Please read the section Checking Signal Strength before starting the system.

Quick Guide – start-up

Once, steps above are completed, room temperature can be set on the thermostats:

1. Press right arrow to increase temperature.

2. Press left arrow to decrease temperature.

3. After some seconds, the display will revert to showing the room air temperature.

NOTE: For further information, please read In-depth description of LK ICS-RF. .

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In-depth description of LK ICS-RF

Recommendation

LK recommend that to achieve economic and efficient running of the floor heating system, that weather compensated regulation of the flow temperature and/or the primary side (heat source) is necessary

Self-modulation technique

To ensure that LK floor heating is regulated as energy efficiently as possible, LK ICS uses self-modulation technology. Self-modulation (self-learning) ensures that the flow in the floor heating circuits is continuously optimized based on the room's needs; thereby giving rise to better comfort and a more energy efficient and environmentally "smarter" floor heating system than a system that uses traditional ON-OFF technology.

Adaptive software

Another energy saving feature is that LK ICS has a built-in adaptive weekly program for lowering night temperature (night set-back). This feature enables the system to learn when it needs to turn the floor heating on to provide a desired temperature at a desired time.

Holiday function

When on vacation, the temperature of the heating system can be lowered for the duration; this is easily done from any thermostat in the system by activating the built-in holiday mode. LK ICS then keeps track of how many days the system should have a lower temperature and makes sure that the house is again warmed on return from vacation.

Remote control

Using, for example, a GSM switch, most standard mobile phones can remotely control LK ICS floor heating.

LK Receiver Unit ICS - RF8

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Function description

The LK Receiver unit ICS RF8 has eight channels, allowing up to eight LK Thermostat ICS-RF to be connected to the unit. The receiver collects data from each room thermostat and sends control signals to LK actuators. One thermostat can control more than one channel. Since the communication between the receiver unit and actuators is via cable, the receiver unit should be placed adjacent to the manifold.

Mounting in the manifold cabinet

At delivery, the receiver unit is fitted with a short antenna cable for internal mounting of the radio link. If the receiver unit is installed in a sheet metal manifold cabinet, it is recommended that the radio link should be fixed outside the cabinet. Use accessory LK Antenna Cable ICS for simplicity.

Description of inputs/outputs/features

Description of the program keys (illus. 1 - 4)

Remove the receiver unit cover; the following keys are displayed:

U-key, used if the unit's software needs updating; separate instructions accompany any software update. (1)

A-key, used in combination with other keys to get alternate functions. (2)

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L-key, activates the adaptation mode. (3)

Channels 1-8, are used to select the desired channel for adaptation. (4)

Thermostat input (illus. 5)

The receiver is intended primarily for wireless communication with LK Thermostat ICS-RF; however due to the ICS systems flexibility, the LK Thermostat ICS-W (hard-wired connected communication) can also be connected to the receiving device using twin-core cable size 0.5mm². Connection is made via the input marked

NOTE:

Both hard-wired and a wireless thermostat cannot be connected to the same channel.

Actuator output (illus. 6)

The receiver unit has eight output channels to open & close the actuators. Connection is made via the output

marked . The actuators are simply connected to the unit via the green terminal plugs (supplied loose). A max. of twelve actuators can be connected to the unit; a max. of two actuators can be connected to any one channel. If a regulated zone requires multiple actuators, ICS thermostats can be easily set for more than one channel/actuator output. Please see the Quick Guide. LK Actuators are opened once every 24 hrs. to prevent the manifold valves from sticking in the closed position (essential long term maintenance).

Power supply (illus. 7)

The device is connected to 230 V AC

Fuse (illus. 8)

Beneath the high voltage lid, is housed a 230 VAC, T200mA fuse. Always use the same type/size of fuse that was previously mounted.

WARNING! RISK OF ELECTRIC SHOCK!

Disconnect all incoming power to the device before the high voltage lid is opened.

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Pump relay (illus. 9)

Circulation pumps (i.e. the pump in a shunt pack) can be controlled through the unit’s pump relay. The relay is located under the lid of "high voltage side" of the receiver unit. NOTE: that the relay contact is "potential free" (volt free), which means that the pump relay must be powered from an external source and NOT from the receiver unit. The pump will start approximately 6 minutes after any one channel calls for heat; when the relay is activated, its LED lights. The pump is run once every 24 hrs. to prevent the pump from seizing during long downtime (e.g. during the summer). NOTE: wiring/connection to the relay may only be performed by a qualified electrician. See diagram below. See also BUS section.

WARNING! RISK OF ELECTRIC SHOCK!

Disconnect all incoming power to the device before the high voltage lid is opened.

Circuit diagram for connecting the pump

Relay for heat source (illus. 10)

Boilers/heat sources can be controlled via the heat source relay. The relay is located under the lid of "high voltage side" of the receiver unit.

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NOTE: the relay contact is "potential free" (volt free), which means that the boiler relay contacts must be powered from an external source and NOT from the receiver unit. The boiler/heat source will fire approximately 6 minutes after any one channel calls for heat. When the relay is activated, the Boiler LED is lit. INOTE: wiring/connection to the relay may only be performed by a qualified electrician. See diagram below. See also BUS section.

WARNING! RISK OF ELECTRIC SHOCK!

Disconnect all incoming power to the device before the high voltage lid is opened.

Circuit diagram for connecting the heat source

Anti tension track (illus. 11)

An anti-tension track is built in to the receiver unit to protect cables connected to the actuators thermostats, BUS and cables for remote control.

BUS (illus. 12)

Where multiple receiver units are required to control a single pump or single heat source, three-core cable is connected to the receiver in parallel via the BUS input terminal. Please refer to detailed instructions at the end of this instruction.

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Switch NO/NC function (illus. 13)

The receiver can be switched to operate actuators either normally closed (NC) or normally open (NO) The adjustment is done by moving the NC/NO "jumper" to the appropriate position as shown in the illustration below.

Termination of the network (illus. 13)

When two or more receiving units are connected in a network, the start and end of the network must be identified for the network to function properly. (NOTE: for further information please see the BUS section.)

Setback input (remote control) (illus. 14)

The unit is equipped with an input for remote control temperature reduction, for example, via a GSM switch. A closed contact enables centralized control for all the thermostats in the system. When activated, all thermostats show EXT in the display and the temperature is lowered to + 12 degrees (factory set) for all rooms/zones; the temperature can be adjusted. NOTE: for more information, please see adjustment/setting of the Thermostat

ICS-RF.

MEM input (illus. 15)

The receiver is equipped with a MEM port that is used primarily when there is to be a system log maintained. Measurement data is sent to LK ICS MEM Stick once per minute. With the help of measurement data and LK ICS Analyzer software, the installer can easily verify/analyze the installation.

1. Insert the LK ICS MEM Stick into the MEM port. Please note the date.

2. The green U-LED glows constantly.

3. Remove LK ICS MEM Stick when logging is completed.

4. Transfer the information to the LK ICS Analyzer.

NOTE:

The LK ICS Analyser and LK ICS MEM Stick is only available to LK’s dealers.

It is also possible to update the device software via the MEM port. Instructions are supplied with all software updates that may be necessary.

GW input (illus. 16)

Input for real-time logging of device. This feature can only be used by LK Systems because it requires special programs and expertise.

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RF input (illus. 17)

Input for Radio link.

Radio link (illus. 18)

LK Thermostat ICS-RF

Function description

Thermostats are positioned in a room/zone to control air (comfort) heating. The thermostat display shows the current room temperature as standard. The set or desired temperature is displayed when the left or right arrow is pressed once. Press again to change the temperature in increments of 0.5°C. The thermostat, as standard, monitors internal room temperature. It is also possible to equip the thermostat with LK External Sensor ICS. Additionally the thermostat can control/check the floor temperature alone, or the floor temperature in combination with the room temperature. NOTE: for further information, please see the section entitled External sensors.

The thermostat has a programmable clock feature that makes it possible to lower the temperature at night using a weekly program. By default, the program starts/stops when the programmed start/stop times occur.

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Additionally the thermostat's adaptive control can be activated, so that the system is self learning. The thermostat calculates when the heating should start so that the correct temperature is reached at the desired time. Temperature increases are affected by the adaptive feature. Temperature is reduced in accordance with programmed stop time. NOTE: for further information, please see the section entitled: Weekly Programming.

LK ICS has a so called "holiday function" which can be activated from any thermostat in the system. The holiday function enables lower the temperatures for extended periods, such as during a vacation. When activated, the feature lowers the temperature of all thermostats to 12 degrees. NOTE: for further information, please see the section entitled: Holiday Function.

If necessary, it is possible to lock thermostats to prevent unauthorized changing of thermostat settings. NOTE: for further information, please see the section entitled: Key Lock.

Description of the keys and their functions

Left arrow = decrease value (1) Mode = confirm or access the menus (2) Right arrow = increase value (3)

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Description of display

1. Heat on/off and minimum and maximum limit

2. Number of the receiver unit and error code

3. Room temperature measurements enabled

4. OK symbol

5. Indicates constantly disconnected weekly program

6. Temperature indicator

7. Setup menu

8. Holiday function

9. OFF/ON selection

10. Local/general set-up

11. Control channel/day

12. Operation

13. Key lock symbol

14. Communication symbol

15. Battery indicator

Description of the thermostat menus/settings

LK ICS-RF can be adjusted and set up as following:

Checking signal strength

Before the system is put into operation for the first time the signal strength should be checked so that all thermostats are located within "broadcasting" area. Check signal strength as follows:

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Press Mode until flashes, confirm using Mode.

2. Press the right arrow until RFST (radio signal strenght) appears in the display, confirm using Mode. Allow the unit stabilise for approximately five minutes.

3. Read the value. The device will automatically return to normal view after 30 minutes.

4. Repeat steps 1-3 for other thermostats in the system.

Signal strength can be checked for all units simultaneously to save time.

Signal strength Comments

0-20 Too low to ensure their

functioning. Take action.

21-100 Excellent.

If necessary, the signal can be improved by placing the thermostat closer to the receiver unit, if possible. Alternatively, the radio link can be moved by using the LK Antenna Cable. If the problem persists, the signal is strengthened by use of LK Repeater.

System clock

The unit is equipped with a "system clock". For the weekly program to function, the unit's system clock must be set. This can be performed from any thermostat in the system. NOTE: the time set applies to all the thermostats in the system. Set the system clock as follows:

Press Mode until flashes, confirm using Mode.

2. Press the right arrow until SySc (System Clock) is displayed, confirm using Mode.

3. The hours flash, select the arrow left/right, confirm using Mode.

4. Minutes start flashing, select the arrow left/right, confirm using Mode.

5. The days start flashing, select the arrow left/right, (1=Monday, 7=Sunday) confirm using Mode.

Weekly program

The unit includes a weekly program. The weekly program switches between either Comfort (day temperature) or Economy (night reduction). Individual times for each temperature can be set up as follows below. The system can also adjust the "start time" so that the correct temperature is reached at the right time with the adaptive function activated (self- learning).

Weekly program - activate

The weekly program is activated as follows:

Press Mode for 4 seconds.

2. The display shows Comfort or Economy in the operating area of the display (see illus. 12 in the above picture of the display).

3. Repeat the above for other thermostats to monitor the program weekly.

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NOTE:

The system clock must be set accurately for this feature to work properly.

Weekly program - temperatures

The units are supplied with the following default temperature values: Comfort = 20 degrees Economy = 18 degrees

Change temperatures as follows:

Press Mode until flashes, confirm using Mode.

2. Select Eco for night reduction temperature, confirm using Mode.

3. The temperature flashes, change the temperature using the left/right arrow, confirm using Mode.

Repeat the above but select Comfort for "day temperature".

NOTE:

The above programming applies only to that specific room thermostat. Repeat the above steps for all other thermostats.

Weekly program – week days/weekends

The unit can be programmed for every day of the week (1-7) or programmed for weekdays & weekends (1-5 & 6-7). Select the program as follows:

Press Mode until flashes, confirm using Mode.

2. Select WKMD (Week Mode) using the left/right arrows, confirm using Mode.

3. Select either 1-7 or 1-5/6-7 using the left/right arrows, confirm using Mode.

NOTE: The setting applies to all thermostats connected to the same receiver unit.

Weekly program - start/stop times

The unit can be programmed for two event times per day, i.e. at which time the unit will switch between day (Comfort) and night (Economy). Follow these steps to set the time:

Press Mode until flashes, confirm using Mode.

2. Press the left/right arrow until the choices below are displayed, confirm in Mode.

WK01 = start time comfort, days1-7 days, choose the time with the left/right arrow, confirm with Mode WK02 = stop time comfort/start time eco days 1-7, select the time with the left/right arrow, confirm with Mode. WK03 = stop time eco/start time comfort days 6-7, select the time with the left/right arrow, confirm with Mode.

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WK04 = stop time comfort/start time eco days 6-7, select the time with the left/right arrow, confirm with Mode.

NOTE:

The above settings apply to all the thermostats in the system. Exceptions are possible by changing the temperature setting for an “exception area". The time remains the same for all units, but it is possible to "disconnect" night set-back by selecting the same temperature day and night for the "exception area". See also the section Weekly program –

disconnect the program temporarily and Weekly program – disconnect the program constantly.

Weekly program - adaptive function

The system has an adaptive function which means that the system learns how slow the room heats and adjusts the start time so that the temperature reaches the desired "Start Time" (from Economy to Comfort) The device comes with "disconnected" adaptive function, the function is activated as follows:

Press Mode until flashes, confirm with Mode.

2. 2. Select right arrow until AdPt (adaptive) is displayed, confirm using Mode.

3. Select ON/OFF using the left/right arrow, confirm using Mode.

The function starts at the next change from Economy to Comfort.

NOTE:

The above programming applies only to that specific room thermostat.

Weekly program – disconnect the program temporarily

If required the weekly program can be disconnected on any thermostat separately. The weekly program can be temporarily disabled as follows:

1. Increase/decrease the temperature by +/- key.

2. The temperature starts to flash.

3. When the temperature has stopped flashing, the temporary increase/decrease is activated.

4. The display shows neither Comfort nor Economy as the temporary increase/decrease is activated.

The temporary disconnection of the weekly program disappears when the program switches between Economy/ Comfort next time. Alternatively, you can press Mode for 4 seconds to return to the weekly program.

Weekly program – disconnect the program constantly

If you wish, you can disconnect the weekly program constantly for any thermostat. The weekly program is disconnected permanently as follows:

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1. Increase/decrease the temperature by using the +/- key

2. Press Mode once when the temperature is flashing.

3. Symbol for constantly disconnected weekly programs appear on the display, see illus. 5 in the display above. The display shows neither the Comfort nor Economy mode as the program is constantly disconnected.

The constant disconnection of the weekly program is cancelled when you press Mode for 4 seconds. The display will then show the Comfort or Economy mode in the operating part of the display (see illus. 12 in the above display image).

Holiday mode – set the temperature

The thermostat is equipped with a so-called "holiday function", enabling any thermostat to activate a general drop in temperature in the unit for a selected number of days. The temperature is factory preset to +12°C degrees. The temperature can be changed for individual thermostats as follows:

Press Mode until flashes, confirm with Mode.

2. Select right arrow until Holi (Holiday) is displayed, confirm using Mode.

3. Set the desired temperature using the left/right arrow, confirm using Mode.

Repeat the above for other thermostats in the system.

Holiday mode – activate

The function is activated from any thermostat as follows:

Press Mode until flashed.

Select using the right arrow, confirm with Mode.

3. Select ON, confirm with Mode.

4. Select the number of days with the left/right arrow, confirm with Mode.

Now all thermostats should show the selected number of days in the display, counting down the days. When the days reach "zero" the thermostat returns to the program each thermostat was running prior to the holiday function commenced.

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NOTE:

Observe that the "countdown" starts from the moment the "activation" occurs which means that the next day at the same time of the initial activation a day has disappeared.

Holiday function – disable/disconnect

The function is deactivated from any thermostat as follows:

Press Mode once.

2. Select OFF with left arrow, confirm with Mode.

3. The thermostat switches to normal view.

All other thermostats automatically switch to the normal view within five minutes.

Back light display - Enable

The thermostats have a back light display that lights up when you press a key. By default the back light is turned off. This feature can be enabled as follows:

Press Mode until flashes, confirm with Mode.

2. Select right arrow until BKLT (Back Light) is displayed, confirm using Mode.

3. Select ON/OFF using the left/right arrow, confirm using Mode.

Please note that the above setting applies only to that specific room/thermostat.

NOTE:

Activated back light affects the life expectancy of the battery.

Key lock

It is possible to lock the thermostat keys to prevent unauthorized changing of the thermostat settings. The key lock is activated as follows:

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Press Mode until flashes, confirm with Mode.

2. Press the right arrow until LOCK is shown in the display, confirm with Mode.

3. Select ON/OFF with the left/right arrow, confirm with Mode.

The padlock is shown in the display.

When key lock is activated, unlock the thermostat as follows:

1. Press all three keys at the same time for at least 20 seconds.

2. The padlock icon disappears and the thermostat is "open" again.

Remote control

The receiver is equipped with an input marked "Setback". The input can be used by an external signal such as the GSM switch to lower the temperature of the entire system. (Closed contact = reduction) The setback temperature is preset to +12°C. The temperature can be changed for individual thermostats as follows:

Press Mode until flashes, confirm with Mode.

2. Press the right arrow until SET (Setback) is shown in the display, confirm with Mode.

3. Select temperature with the left/right arrow, confirm with Mode.

Repeat the above for other thermostats in the system.

External sensors – connection of an external sensor

The thermostats can be equipped with external sensors, for example, to regulate the temperature from the floor.

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The external sensor, LK External Sensor ICS is connected as follows:

1. The external sensor is installed in a protective conduit; see separate instructions in the External sensor – location in different heating systems section.

2. Connect the sensor to the terminal on the thermostat back-plate, the terminal is marked EXT.SENSOR.

3. Select the function the sensor is to perform, follow the instructions in the External Sensors - select function section.

External sensors - select function

It is possible to specify a function for the thermostat when connecting to external sensors. The setting is made as follows:

Press Mode until flashes, confirm with Mode.

2. Press the right arrow until SENM (Sensor Mode) is shown in display, confirm with Mode.

3. The display shows SEN and the icon on the left flashes.

Select from the following modes:

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1. Thermometer only flashes = room temperature only. Confirm with Mode. The external sensor is not active.

2. The thermometer and MAX flashes = room temperature with the floor set at maximum limitation. Confirm using Mode, the unit shows MAX flashing and is set to maximum temperature. Set MAX temperature using the left/right arrow, confirm with Mode.

3. Thermometer and MIN flashes = room temperature with the floor at minimum limitation. Confirm with Mode, the unit switches to MIN flashing and is set to minimum temperature. Set minimum temperature using the left/right arrow, confirm with Mode.

4. Heating icon flashes = floor temperature only, no influence by the room sensor. Confirm using Mode; the room sensor is not active.

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Resistance table

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

External sensors – installed in differing floor heating systems

Embedding in concrete or screed

Sheath in conduit approx. 2 meters into the room before embedding in concrete; consider location for the sensor carefully as it must be representative of the whole floor. The end of the sensor must be placed between two floor heating pipes. Seal the end of the conduit with tape or similar to prevent concrete entering the conduit bore. Position the conduit as close to the surface as possible as this provides optimum control of floor surface temperature. Install the cable sensor prior to pouring concrete. The external sensor is slipped into the conduit before pouring the concrete. Connection instructions to the room thermostats are given above.

LK Wood 22, LK XPS or LK Silencio

Route or cut a groove approx. 2 metres for the conduit sheath between the ally heat distribution plates; consider the location for the sensor carefully as it must be representative of the whole floor. The external sensor is slipped into the conduit before laying the floor. Connection instructions to the room thermostats are given above.

Floor heating in cross battening

Fix conduit (2 metres) between ally heat distribution plates, using suitable pipe clips, to the cross battening; consider the location for the sensor carefully as it must be representative of the whole floor. The external sensor is slipped into the conduit before laying the floor. Connection instructions to the room thermostats are given above.

LK EPS 16

Cut 2 metre slot in EPS Turning boards 250mm from wall. Run conduit alongside the installation to the start of the cut and continue to run out the conduit; consider the location for the sensor as it must be representative

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of the whole floor. The external sensor is slipped into the conduit before laying the floor. Connection instructions to the room thermostats are given above.

LK Clip Rail 12

Delete channels

If required, all initialised channels can be deleted, for further information please see Reset section.

Delete individual channels

If necessary, a single channel/thermostat can be deleted from the receiver unit.

1. Press the L key on the receiver unit for at least 3 seconds, L-LED will light green.

2. Press the left arrow and right arrow key on the thermostat for at least 5 seconds.

3. The DEFA text flashes on the display, confirm with Mode.

4. The text RUR is shown in the display.

5. Remove the battery for at least five seconds.

6. The unit is now cleared of all settings and is ready to be re-initialised.

7. End the sequence by pressing the L key on the receiver unit, following which the L-LED goes out.

Battery replacement

LK Room Thermostat RF ICS comes with three 1.5 volt LR03 batteries (AAA). The batteries have a life expectancy of two years. Life expectancy is affected by the user's choices, such as activated background lighting. The thermostat display has a battery icon that shows the battery status. The battery should be replaced when the icon only shows one segment. Battery replacement is performed as follows:

1. Remove the thermostat from the wall by gently pushing the securing plate with a screwdriver while at the same time pulling the thermostat from the back-plate (the push-lock is positioned on the underside of the thermostat).

2. Replace the batteries and then click the thermostat into position again. After the battery replacement, the thermostat automatically returns to normal operation.

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BUS (Network for the control of common pumps and/or heat sources)

In cases where multiple receiver units signal/control a common pump and/or heat source, the receiver units are connected together, in parallel, through the input marked BUS. Use 3-core cable x 0.5mm² for the network. When the units are connected, the remote control and holiday functions for all the devices on the network work as one. For the network to function properly it is necessary to number/name the input receiver units, and specify a start and end to the network. Follow these steps when a network is to be created:

1. BUS - wiring

Connect all receivers BUS connectors using 3-core x 0.5mm² cable. The connection must be according to the following diagram.

2. BUS – placing of a radio link

When multiple receiving devices are connected in a network only one radio link is used. The other units’ radio links must be disconnected for the network to function. Place the radio link at the beginning or end of the network. If necessary, a repeater can be used to improve the signal quality in large systems/long distance.

3. BUS – termination

Termination means that the networks start and end is specified. Place the “termination jumper" found left side of receiver marked T as follows:

The networks first point corresponds to the receiver unit that is located first in the network. This unit should have its Radio link connected. Remove the “termination jumper” from this receiver unit .

2. The network's second endpoint corresponds to the receiver unit that is last in the network. Ensure that jumper is in the right location (located next to T).

3. Other devices in the network must have their jumpers removed.

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4. BUS – naming the receiver units

Each receiver unit must be named or numbered in order for communication to work. Name the receiver units, as follows:

1. Press the L key for at least three seconds on optional receiver unit

2. The unit’s L-LED lights up green. This unit is now numbered as No 1. Mark the inside of the unit’s lid as number one with a marker pen or other. The other receiver units L-LED’s now show red to indicate that they are not yet named.

3. Name the next unit by pressing the L key for at least 3 seconds. When the L-LED is green the unit is numbered. Mark the unit’s lid as number 2.

4. Repeat step 3 until all units have received their serial number.

5. Exit by pressing the L key on the FIRST unit and all the units´ L-LEDs turn off.

5. BUS – adaptation of the thermostat to the BUS-coupled receiver unit

1. Press the L- key on optional receiver unit for at least 3 seconds, the L-LED will light up green.

2. Remove the plastic covering from the thermostat battery, the thermostat display shows RUR.

Press Mode on the thermostat until is shown in the display.

The receiver unit’s L-LED switches to yellow and selectable channels are lit up green.

5. Select channels by pressing the desired channel key; the selected channel flashes green.

6. Confirm by pressing Mode once on the thermostat; the thermostat switches to "normal view". Note that the receiver unit's "system number" appears in the thermostat display.

7. Repeat steps 2-6 for other thermostats to be connected to the same receiver unit.

8. Press the L key to complete the adaptation.

9. Repeat steps 1-8 for the other receiving units on the network.

NOTE:

If necessary, the thermostat and the Receiver unit can be restored to default settings. See instructions in the Reset section.

Troubleshooting

If an error appears, this is shown either by error codes in the thermostat and/or a red LED in the receiver unit. See the table below showing the various error codes that the system may display.

Error codes – taken from the thermostat

Following an error that generates an error code in the thermostat display, the display switches between displaying "Normal view", and “Error view”. The error code appears as a number, the following shows error code 02.

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Error Description Action

01 No signal

transmission has occurred for 60 minutes.

Automatic reset occurs when the signal arrives. Check the signal strength.

Short circuit of actuator.

The device switches off shortcircuited output. Reset by switch of the power to the unit. Check the actuator if the problem persists when power is turned on again.

03 Total current of

actuator outputs too high.

The device disconnects the actuator outputs. When the total power of the output is less than critical value, the outputs are automatically reset.

04 Adaption of

thermostat failure.

NOTE: No fault code displayed. Try to reset the thermostat.

Incorrect Ohmvalue when external sensor (floor sensor) is connected.

Check the connection of the sensor.

09 Wireless and wire-

connected thermostat adapted/connected to the same channel.

Reinstall.

Other error codes

The following error codes come from the receiver unit's various LEDs or via the info.txt file.

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Error Description Action

05 No communication

in the BUS (from the network). Taken from the info.txt file

Check the connection points

07 Receiver unit is not

numbered (from the network). Taken from the info.txt

MEM does not work. U LED lights red.

Try to mount the LK ICS MEM Stick again. U LED lights green when functioning properly.

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LK Repeater ICS

LK Repeater ICS is used to increase the transmission distance between the LK Room Thermostat ICS RF and the LK Receiver unit ICS-RF. The repeater consists of a radio link with receivers and transmitters. A transformer that plugs into a 230V outlet comes with the repeater. The repeater is placed between the outer thermostat and receiver. Mount the repeater so that the antenna is vertical. The set-up may contain up to 4 sets of repeaters.

Adaptation of LK Repeater ICS

The repeater is connected as follows:

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1. Switch the repeater off (if it is powered up).

2. Press the L key for at least 3 seconds on the receiving device. The L-LED should light green.

3. Connect the repeater to a 230 volt outlet.

4. Wait until the repeater starts flashing orange.

5. Confirm by pressing the L key.

NOTE:

A non-adapted repeater flashes green every 3 seconds.

Reset

Resetting of LK Receiver Unit ICS-RF8

If necessary all adapted channels can be erased from the receiver unit:

1. Press A and channel 8, together for at least 5 seconds.

2. LEDs for channels 1-8 are red for a short time

3. Unplug the unit for 10 seconds. (230 V power supply to unit).

4. The unit is now cleared of stored information.

5. Reset all thermostats.

Resetting of LK Thermostat ICS-RF

If necessary the thermostat can be reset.

1. Press the left arrow and right arrow keys for at least 5 seconds.

2. DEFA text flashes on the display, confirm with Mode.

3. RUR text appears in the display.

4. Remove the battery for at least 5 seconds.

5. The unit is now emptied of any information and is ready for new adaptation.

Resetting of LK Repeater ICS

If necessary the repeater can be reset.

1. On the back of the repeater there is a small orange reset key.

2. Press the key for at least 8 seconds.

3. A red LED lights up then the device is restored to its original state (factory setting).

System limitations

The following is a summary of the limitations of the system.

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Limitations Min Max Notes

Number of thermostats per ICS RF8

1 8

Number of actuators per ICS RF8

1 12

Number of actuators per channel ICS

1 3 It is possible to physically connect two per

contact.

Number of radio links per system

1 1 With connected BUS

Number of ICS-RF 8 per system

1 8 With connected BUS

Number of channels per system

1 64 With connected BUS

Maximum number of repeaters per system

0 4

Length of cable networks - 75 m With connected BUS Cable length for Radio link

(cable type: modular cable RJ9)

- 30 m LK Aerial cable is 10 m

Comments

Totally trouble-free operation cannot always be guaranteed with the technology available today that allows free use of EU authorised frequency bands (interference from other sources is possible). Therefore, each installation should be tested individually.

Manufacturer set thermostat

Setting

Unit Min Max Factory

settings

Holiday value Days 1 90 1 Setback temperature °C 8 40 12 Economy

temperature

°C 8 40 18

Comfort temperature °C 8 40 20 Holiday temperature °C 8 40 12 Start time Comfort Time, hours 00:00 24:00 06:00 Start Time Economy Time, hours 00:00 24:00 22:00 System clock Number of days:

hours: minutes

0:00:00 7:23:59 1:00:00

Floor sensor min limit °C 7 40 10 Floor sensor max limit °C 7 40 27 Adaptive function On/Off - - Off Background lighting

display

On/Off - - Off

Key lock On/Off - - Off

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Article overview

Article number Name Comments

2417302 LK Thermostat

ICS-RF High gloss white

2417303 LK Thermostat

ICS-RF High gloss black

2417304 LK Thermostat

ICS-RF Silver grey

2417307 LK Receiver Unit

ICS-RF8 (NO)

Intended for normally open (NO) actuators.

2417316 LK Receiver Unit

ICS-RF8 (NC)

Intended for normally closed

(NC) actuators. 2417321 LK Repeater ICS 2417323 LK External Sensor

ICS

Length 3 m

2417324 LK Antenna Cable

ICS

Length 10 m

Technical data

Article name

LK Thermostat ICS Article number 2417302, 2417303, 2417304 Setting range 8-40 °C Supply voltage 3 x1,5 V Battery life 2 years Radio frequency Self-modulation technique Radio frequency 868 Mhz Dimensions 100 x 100 x 20 Protection class IP20 Operating temperature + 1 °C - + 50 °C Storage temperature - 20 °C - + 70 °C Maximum humidity during storage

No condensation

Article name LK Receiver Unit ICS RF8 Article number 2417307 (NO), 2417316 (NC) Supply voltage 230 V AC Radio frequency 868Mhz Regulating function Self-modulation technique Maximum number of actuators per channel

3 pcs

Maximum number of actuators per receiver unit

12 pcs

Dimensions 400 x 120 x 60 Protection class IP30 Operating temperature + 1 °C - + 50 °C Storage temperature - 20 °C - + 70 °C Maximum humidity during storage

No condensation

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Article name LK Repeater ICS Article number 2417321 Supply Voltage 230 V AC Radio frequency 868 Mhz Dimensions 120 x 35 x 30 Protection class IP20 Operating temperature + 1 °C - + 50 °C Storage temperature - 20 °C - + 70 °C Maximum humidity during storage

No condensation

This control equipment can be used in all EU and EFTA countries. The manufacturer states that the equipment meets the essential requirements and other relevant requirements from the R & TTE Directive 1999/5/EC.

LK ICS-RF8 Assembly Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual