LK Systems Cq 1 NC User manual

1
controlling devices. The control signal, which is
calculated from the difference between the real
and set temperatures, is emitted in the form of
a signal with different pulse and rest conditions.
The total of the signal and rest times is always 10
minutes. In the event of large differences in tem-
perature, the thermostat is constantly coupled on
or off.
Assembly of LK Room Thermostat Cq-n
Take apart the room thermostat by lifting the dial
at the temperature scale upwards and loosening
the screws which are visible. Unfold the upper
piece towards the left until it loosens. Install in
place according to the installation drawing.
To ensure proper functionality of the room ther-
mostat, the following points should be observed:
•Install the thermostat on an inner wall with
free ventilation, approximately 1.5 metres
above the oor.
•Avoid exposing the thermostat to direct sun-
light or other heat sources.
•Do not install the thermostat close to a radio,
TV or other senders.
•Installation of the thermostat in the vicinity
of metal doors, metal cabinets or similar is
unsuitable.
LK Receiver Unit Cq 1
LK Receiver Unit Cq 1 can address 1 LK room
thermostat Cq-n.
It is possible to connect two controlling devices
directly to Cq 1. With the help of an outer termi-
nal, a total of eight devices can be connected.
Models
LK Wireless Room Temperature Controller Cq
NC 1 consists of a LK Room Thermostat Cq
(transmitter) and a LK Receiver Unit Cq 1 (a re-
ceiver device for one channel).
Also included in the wireless assortment is a re-
ceiving device for eight channels; for more infor-
mation see separate instructions for LK Receiver
Unit Cq 8.
The LK Repeater Cq HW (signal repeater) is avai-
lable as an accessory for difcult sending condi-
tions; see more about this in separate instructions
for the LK Repeater-HW.
Functional description
The LK Room thermostat Cq-n regulates the tem-
perature of the room via transmission of radio
signals to the LK Receiver Unit Cq 1. The recei-
ver unit transforms the radio signals into control
signals which activate the LK Controlling Device.
Since the communication between the LK Re-
ceiver Unit Cq 1 and the LK Controlling Device
occurs via cable, it is most suitable to place the
receiver unit in direct connection to the circuit
distributor.
LK Room Thermostat Cq-n
LK Room Thermostat Cq-n is available in two
different models: polar white or silver grey.
The LK Room Thermostat Cq-n regulates the
temperature of the room via transmission of radio
signals to the LK Receiver Unit Cq 1. Regulation
occurs via pulse width modulated (PBM) regula-
tion which is especially adapted to thermoelectric
LK Receiver Unit Cq 1 (NC)
EN.33.C.74(NC).
Assembly instructions | LK Receiver Unit Cq 1 (NC)

2
EN.33.C.74(NC).
Assembly instructions | LK Receiver Unit Cq 1 (NC)
Programming / commissioning
1. Activate the receiver unit
Always begin programming by erasing all even-
tual previous programming according to the be-
low:
•Press the ”Reset” button simultaneously as
the !button.
•Then release the ”Reset” button rst, follo-
wed by !.
•Press reset again.
•Activate receiver unit Cq 1 by pressing once
on !.
A weak signal sounds and an indicating light
turns on.
2. Activate the thermostat
A
B
C
D
•Open the lid of the room thermostat and
remove the transport protection from the
batteries.
•Check that the current switch (A) is set to the
bottom position facing the heat symbol, ac-
cording to image 3
•Activate the room thermostat by holding the
lower button (B) down, press briey on the
upper black button (C).
•When the green LED on the thermostat
lights, the lower black button (B) may be
released.
•The thermostat is now activated for pro-
gramming.
The unit is complemented with a LK Transformer
230/24V AC (article order separately)
The controlling device moves once a day in order
to prevent valves from sticking in a closed posi-
tion. If no valve movement is wanted, the function
can be disconnected by removing jumper 1 on the
thermostat. Remove the dial of the thermostat,
loosen the screws and remove the cover. Remove
jumper 1, marked BR1 on the circuit board.
Installation
A 230 Volt wall outlet should be available nearby
the receiver unit. The receiver unit may only be
installed by a suitably qualied professional ac-
cording to the wiring diagram and in accordance
with valid safety regulations. In order to achieve
protective level 2, the necessary installation mea-
surements must be taken.
Connect 230 V to terminals N and →
Coupling of controlling devices
Controlling devices are coupled between termi-
nal 9 on Cq 1 and one of the 24 Volt cables of the
LK Transformer.
If many controlling devices are to be connected,
they are coupled parallel to each other and in
series with the transformer, see wiring diagram.
Then connect the second 24 Volt cable of the trans-
former to terminal 2 on the Cq 1.
N
9
Mains AC 230V
2
LK
Actuator
LK Transformer
230 / 24 V AC
Mains AC 230V
24 V AC LK Cq 1
Electric wiring diagram for Cq 1

3
EN.33.C.74(NC).
Assembly instructions | LK Receiver Unit Cq 1 (NC)
Power failure
If power failure occurs, no data is lost, all pro-
gramming is saved. When the power returns, it
may take up to ten minutes before the unit has
reverted to normal operation. The process can be
hastened by pressing on the upper black button
(C) of the room thermostat.
Battery exchange of room thermostat
LK Room Thermostat Cq is delivered with two
1.5 V batteries (LR03). The batteries have an esti-
mated working life of two years. The signal light
on the thermostat ashes at 15-second intervals
when it is time to change the batteries. The bat-
teries should be exchanged within the next few
days; the batteries are located under the lid of the
thermostat cover. The thermostat reverts to the
chosen mode of operation after battery exchange.
Press on the reset-button of the thermostat to has-
ten return to the chosen mode of operation (but-
ton C), see image under heading ”Programming/
Commissioning”. Uncharged batteries yield a 30
% heat effect on the receiver unit.
CE-compliance
This regulating equipment can be used in all EU
and EFTA-countries. The manufacturer hereby
indicates that the equipment fullls those basic
requirements and other relevant requirements
indicated by directive R&TTE 1999/5/EC. The
manufacturer’s declaration may be downloaded
from www.funk868mhz.de
3. Confirm chosen channel
When the thermostat has ”found” its channel the
sound signal from Cq1 becomes silent and the in-
dication light on Cq1 shuts off. Conrm by pres-
sing once on the upper black button of the ther-
mostat (C). The LED on the thermostat shuts off
and the diode on the receiver unit will ash a few
times. The programming is now complete.
Functional control
Test the connection by turning the knob of the
thermostat up/down. When the thermostat is at
the maximum position, the indication light on
Cq1 should be on and when the thermostat is at
the minimum position, the indication light of the
Cq1 should be off.
Fault finding /Operational inter-
ruptions
Problems with signal transmissions
If the signals between the thermostat and receiver
unit are not transmitting correctly, the signal light
on the receiver unit will ash. During the ongo-
ing signal interruption, the output of the channel
concerned will produce a 30% effect. If the recei-
ver unit receives signals from thermostat concer-
ned, the alarm is stopped immediately.
If the problem remains for more than 10 hours, an
alarm signal will sound in addition to the signal
light. The problem can be attended to by pressing
on the reset button (button C) of the thermostat,
see heading ”Programming/Commissioning”. If
the problem returns, the batteries of the thermo-
stat concerned may require changing; see heading
”Battery Exchange” for more information. If the
problem returns despite battery exchange, it may
be necessary to strengthen the signal, which can
be suitably done with the help of a LK Repeater.
See more in separate instructions for the LK Re-
peater.
The controlling devices do not shut off
Check that there is power supplied to the outlet.
Check the fuse of the transformer. Remove the
plug before changing the fuse. Change to the same
type of fuse as is already present, 250 V 6.3 A.

4
EN.33.C.74(NC).
Assembly instructions | LK Receiver Unit Cq 1 (NC)
Notes
Completely disturbance-free operation cannot
always be guaranteed with the technology av-
ailable today, which does not allow free use of
frequency bands. Installation should therefore be
tested individually.
60
75
4
27,1
LK Room Thermostat Cq-n
60
71 26,8
4
LK Reception Unit Cq 1
Technical data
Article name LK Reception Unit Cq 1
Article no. 241 81 28
Power supply 230 V 50 Hz
Effect requirements c:a 12 VA
Operating temperature 0 - + 50
Storage temperature - 20 + 60
Antenna Integrated
Signal out 1 relay with potential-free
contact
Dimensions 71 x 71 x 27 mm
Weight 0,144 kg
Capping class IP 40
Max. no. controlling
devices
Max 8 pcs
Article name LK Room Thermostat Cq-n
Article no. 241 88 50 (Polar white)
241 88 51 (Silver grey)
Setting area +5 - +30 °C
Power supply 2 x 1.5 V = 3 V alkaline bat-
teries (LR03)
Battery life Approx. 2 years
Control function PBM (optional 2-point)
Cycle period Approx. 10 minutes
(total on/off time)
Measurement interval Approx. 10 minutes
Type-dependent Heat/cold
Valve movement Once per day for 3 minutes
(can be disconnected, BR 1)
Temperature sensor NTC
Transmission frequency 868 MHz
Modulation FM
Antenna Internal
Sending interval/trans-
mission intervall
< 10 minutes
Range (typical) 100 metres ventilation or
2 levels alt. 3 walls
Capping class IP 40
Protection level 2
Working temperature -25 - +40 ºC
Storage temperature -25 - +70 ºC
Temperature limits One dial selector