LK Systems Cq 1 User manual

1
LK Wireless Room Control Cq (NC).
LK Actuator 24V AC
Connect the actuators, bearing in mind the fol-
lowing:
A control zone consists of 1 LK Room Thermostat
(transmitter) but can contain one or more under
oor heating loops equipped with actuators. All
actuators in a control zone must be connected to
a common channel on the receiver unit.
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.
LK Actuator.
Design
The LK Room Thermostat Cq (transmitter) regula-
tes the temperature in a zone (e.g. a room) via ra-
dio signals to the receiver unit. NOTE: Locate the
receiver unit close to the heating circuit manifold.
The receiver unit converts radio signals to control
signals to activate the actuators.
The receiver unit is available in three sizes:
•LK Cq 1 intended for 1 control zone.
•LK Cq 4 for a maximum of 4 control zones,
(channel 1 - 4).
•LK Cq 6 for a maximum of 6 control zones,
(channel 1 - 6).
The receiver unit functions along the same prin-
ciples, but the Cq 1 unit, which only has one re-
ceiver channel, differs somewhat in its design.
The instructions for this model therefore contain
a few additions.
Requirements
A suitably qualied electrician or installation
engineer, must carry out electrical installation in
accordance with the circuit diagram gs. 1 + 2. To
achieve protection class 2, all necessary installa-
tion measures must be taken.
Installation and start-up (memorizing) is best car-
ried out in the following order:
The receiver unit
The receiver unit should be located close to hea-
ting circuit manifold to avoid lengthening the ac-
tuator connection cables.
In certain circumstances, the transmitters (ther-
mostat) signal may be too weak, e.g. if the recei-
ver unit is assembled in a metal enclosure (e.g.
LK Manifold Cabinet). In these cases, the LK Re-
peater Cq should be used. See separate section,
LK Repeater Cq.
LK Wireless Room Control Cq 1, 4 & 6 (NC)
EN.33.C.29.
Assembly instructions | LK Wireless Room Control Cq 1, 4 & 6 (NC)

2
EN.33.C.29.
Assembly instructions | LK Wireless Room Control Cq 1, 4 & 6 (NC)
N
9
Supply AC 24V
LK
Transformer
Mains AC 230V
2
M
M
Circuit diagram Cq 1, (M = Actuator).
LK Transformer 230/24 V AC
A transformer 60 VA for 24 V AC supply is con-
nected in accordance with the circuit diagram for
each receiver unit.
230 V mains voltage connection.
•Connect the receiver unit and the transfor-
mer to the mains.
•Check the primary and secondary voltage.
•Reassemble the protection box on the recei-
ver unit before Memorizing/Start-up.
Cq 4 and Cq 6 Control Unit
For the Cq 4 and Cq 6 Receiver Unit, a maximum
of 4 actuators can be connected to each channel.
The circuit diagram shows that all channels in Cq
4, and 2 channels in Cq 6, have double terminal
boards, b or c respectively, for connecting the ac-
tuators. Cq 4 and Cq 6 receiver units can operate
a maximum of 16 actuators.
When connecting two or more actuators to the
same channel, the connections must be only to
the double circuit boards.
a
channel 1
Mains
A
C 230 V
Supply AC 24 V
LK Transformer
BR3
channel 2
a b b c c a a b b c c
channel 3 channel
4
a a b 7 8 9b c c a a b b c c
M M
Circuit diagram Cq 4, (M = actuator).
a
channel 1
Mains
A
C 230 V
channel 2
a b b c c a b c
channel 3
a a b 7 8b c c
M M M
a b c
channel 4
a b c
channel 5
a b c
channel
6
Supply AC 24 V
LK Transformer
Circuit diagram Cq 6, (M = actuator).
Cq 1 Receiver Unit
Cq 1 Receiver Unit differs from the other units as
up to eight actuators can be connected.
Up to two actuators can be connected direct to
Cq1. However, if necessary, it is possible to con-
nect up to eight actuators to Cq1 by using an ex-
ternal wiring / junction box. In both cases the
actuators are connected parrallel to each other
and in line between terminal 9 and the LK Trans-
former.

3
EN.33.C.29.
Assembly instructions | LK Wireless Room Control Cq 1, 4 & 6 (NC)
Check the mains switch (A) is in the lower po-
sition towards the heat symbol as shown in the
picture. During memorizing, the thermostat will
attempt to communicate with the activated chan-
nel on the receiver unit. Memorizing can take
place before the thermostat is assembled in the
intended place. The distance between the ther-
mostat and the receiver should be at least 2 met-
res during memorizing.
NOTE:
Mark the thermostat with the channel number that it will
be sent to. (e.g. with tape on the inside of the door.)
Activating the receiver
For Cq 4 and Cq 6 as follows:
•To activate the memorizing phase on the
receiver unit, press the button for the chan-
nel that is to be activated rst. A weak sound
signal is heard and the indicator light will
come on.
For Cq 1 as follows:
•To activate the memorizing phase on the
receiver unit, press the button !. A weak
sound signal is heard and the indicator light
will come on.
Activating the room thermostat
•Press and hold the lower black button (B).
•Briey press the upper black button (C).
•When the indicator light (D) is lit, release the
lower button. Memorizing (the connection)
between the thermostat and the channel
selected now occur. Pay attention to the re-
ceiver. Once contact is established, the sound
signal will cease and the indicator light will
go out.
•Press the upper button on the room thermo-
stat one more time to switch off the indicator
light. (The indicator light on the thermostat
in future use is only used to warn of low bat-
tery power.)
Memorizing/activation - Start-up
Reset
Always begin memorizing by rst erasing all pre-
vious programming.
For Cq 4 and Cq 6 as follows:
•Press the ”Reset” button and the button for
”Channel 1” at the same time.
•First release the ”Reset” button, followed by
the ”Channel 1” button.
For Cq 1 as follows:
•Press the ”Reset” button and the button !
at the same time.
•First release the ”Reset” button, followed by
the button !.
•Press ”Reset” again.
LK Room Thermostat Cq
Open the door on the room thermostat and remo-
ve the transport protection covering the batteries.
A
B
C
D

4
EN.33.C.29.
Assembly instructions | LK Wireless Room Control Cq 1, 4 & 6 (NC)
•Do not mount it near a radio, TV or other
transmitter.
•Do not mount it near metal objects, such as
metal doors, metal cupboards or similar.
NOTE:
After xing to the wall, care must be taken to ensure
buttons A, B & C are correctly located in the front cover;
misalignment will cause malfunctions.
Completing activation / memorizing
Continue activation / memorizing in the same
way as forthe other channels, following the in-
structions for the LK Room Thermostat Cq.
LK Repeater Cq
The LK Repeater Cq is used to increase the trans-
mitting distance between LK Room Thermostat
Cq and LK Receiving Unit Cq. The Repeater is
also used when it may be necessary to improve
the quality of transmission, e.g. when affected by
external sources of interference. Place the repea-
ter in an earthed wall socket. The socket in the re-
peater replaces the occupied wall socket. The re-
peater will function automatically. The user does
not have to do anything to add the apparatus to
the existing radio links. The repeater should be
located at an appropriate distance from the trans-
mitter. For more information, see seperate in-
struction for LK Repeater Cq.
Function control
Place the room thermostat in the room where it
is intended to be assembled according to the de-
sign. By turning the thermostat’s adjustment dial,
the indicator light on the receiver’s channel will
be lit or switched off respectively within approx-
imately 30 seconds.
•Dial towards maximum temperature, the
light on the receiver unit comes on.
•Dial towards minimum temperature, the
light on the receiver unit goes off.
If the light switches off when it should come on,
check that the mains switch’s setting is in the lo-
wer position towards the heat symbol. See the
section LK Room Thermostat Cq. If the setting
was right and the problem continues, see the sec-
tion ”Heat/Cool”.
NOTE:
During set up (only) the indicator light on channel 4 or
channel 6 comes on when one or more other channels
trigger the heating. This function continues until all the
channels are activated. For more information, see the
section “Pump Control”.
Additional measures
Assembling the room thermostat
Open the room thermostat by pulling the tempe-
rature scale dial right out and loosening the screw
that becomes visible. Bend out the upper part to
the left until it becomes loose. Position the room
thermostat as per the design plan.
For the room thermostat to function properly, the
following guidance should be followed:
•Mount it on an inner wall where it is ventila-
ted but not in a draught. (NOTE FOR UK: in
some home refurbish- ment projects where
the building is poorly insulated, it may be
prudent to place the thermostat on an outsi-
de, or coldest, wall. The thermostat will then
compensate by calling for heat.)
•Do not expose it to direct sunlight or other
heat sources.
•Mount it approximately 1.5 metres above the
oor.

5
EN.33.C.29.
Assembly instructions | LK Wireless Room Control Cq 1, 4 & 6 (NC)
Alternative 2
Changing the whole installation by reprogram-
ming the receiver unit as follows:
Change to cool (summer operation):
•Press the “Reset” button and the button for
”Channel 3” at the same time.
•First release “Reset” followed by “Channel
3”.
Change to heat (winter operation):
•Press the “Reset” button and the button for
”Channel 4” at the same time.
•First release “Reset” followed by ”Channel
4”.
NOTE:
For the Cq 1 unit, the change is made on the room ther-
mostat.
Alarm
When a fault occurs, the indicator light begins to
ash with an irregular time interval and a sound
signal is heard. During signal disruption, the af-
fected channel will deliver approximately 30%
heat output.
Temporary interruption
If no signal is received from the room thermostat
(transmitter) for a period between 1 to 10 hours,
the indicator light on the receiver unit will dis-
play short ashes, but no sound signal. Acknow-
ledgment of the alarm occurs automatically if the
transmitter signal reoccurs.
Prolonged interruption
If no signal is received from the room thermostat
(transmitter) for a period of more than 10 hours,
the indicator light on the receiver unit will dis-
play short ashes and a sound signal is emitted.
Acknowledgment of the alarm occurs automati-
cally if the transmitter signal is regained. In the
event of a loss of power in the receiver unit, no
programming will be affected. Operation will
continue as normal once power is restored.
Pump control for Cq 4 and Cq 6
The last channels on the receiver Cq 4 (channel 4)
and Cq 6 (channel 6) can start or stop a circula-
ting pump. However, Cq 4 becomes 3 channel
and Cq 6, 5 channel receiver. Pump control can be
arranged via an external relay for 24/230 V (relay
not supplied by LK). The 24 Vside of the relay
should be connected to terminals A and C of the
channels. The channels have a time delay of 10
minutes for pump control.
Range control of radio signal
To determine a connection’s maximum range, the
following check can be carried out:
•First, carry out activation/memorizing as the
instructions.
•Then push the “Reset” button on the recei-
ver unit at the same time as the button for
“Channel 2”.
•First release “Reset” followed by the “Chan-
nel 2” button. The sound signal and the
indicator light will now pulse for about 2
seconds on, 8 seconds off.
•Next move the room thermostat far enough
away from the receiver unit that the pulses
almost stop. This is the maximum distance
for radio connection.
•Finish the check by pressing “Reset” on the
receiver unit.
The room thermostat returns to normal operation
mode after a short time. Other channels are not
affected by the check. If the connection is insuf-
cient, the radio signal can be strengthened with
LK Repeater Cq. See separate section, LK Repea-
ter Cq.
Heating & Cooling
The equipment is constructed so that it can be
used to heat(under oor heating) and cool. The
functions are changed manually. When supplied,
the components are set for heat. Switching to cool
can be done in two ways.
Alternative 1
Change all room thermostats by moving the
mains switchA to the upper position.

6
EN.33.C.29.
Assembly instructions | LK Wireless Room Control Cq 1, 4 & 6 (NC)
Connection check
After using the receiver unit’s “Reset” function,
the respective channel’s indicator light will indi-
cate, by a shortash, that the connection has been
established.
Technical data for receiver
Cq1, Cq4 & Cq6
Supply voltage AC 230 V + 24 V, 50/60 HZ
Power requirement Approx. 3 VA for Cq 4 - 6
Approx. 12 VA for Cq 1
Operating temperature 0 - +50 °C
Storage temperature -20 - +60 °C
Disconnecting sound signal Vertical BR1 for Cq 4 - 6
Vertical J2 for Cq 1
Aerial Internal
Reception frequency 868 MHz
Protection mode IP 40
Protection class 2
Output signal, type Relay, 1 alternating poten-
tial free
AC 24 V - 230 V for
Cq 4 - 6
Max 8 A cos φ = 1
Max 2 A cos φ = 0,6
AC 24 V - 230 V for
Cq 1
Max 16 A cos φ = 1
Max 2 A cos φ = 0,6
Number of actuators
AC 24 V 2-3 VA NC, which
can be controlled per relay
output
For Cq 4 - 6 = 4
For Cq 1 = 8
Maximum number of actua-
tors within same receiver
unit
16
NOTE:
Trouble free operation cannot always be guaranteed due
to possible external interference sources.
Acknowledgment of the alarm
To acknowledge a disruption, interrupt “Memo-
rizing”, or end a connection test, press “Reset” on
the receiver unit. The output will return to the ba-
sic position. When the next control signal comes
after approximately 10 - 20 minutes, the output
will return to its correct position. Any radio con-
nection established will not be affected.
Valve exercising
The actuator disconnects once a day for 3 mi-
nutes and opens the valve on the heating circuit
distributor. This function prevents valves from
sticking, for instance, during the summer period.
If valve exercising is not required, this function
can be disconnected using vertical 1 in the room
thermometer. Remove the temperature dial, loo-
sen the screw and liftthe cover. Remove vertical 1,
which is marked with BR1 on the printed circuit
card.
Description of functions - room thermostat
Control occurs using pulse width modulation
(PBM), whichis intended for actuators. The con-
trol signal, which is calcu-lated from the differen-
ce between the actual temperatureand the tempe-
rature entered, is emitted in the form of asignal
with different pulse and rest ratios. The sum of
the signal and rest period is always 10 minutes.
With large temperature variations, the thermostat
is constantly switching on or off.
Changing the batteries on the room thermo-
stat
When the indicator light ashes with 15-second
intervals, the batteries should be changed within
a few days. The batteries are located under the
battery cover. For information about battery type,
see “Technical data.”
After changing the batteries, the thermostat will
continue to operate according to the chosen mode
of operation. With depleted batteries, the receiver
channel will continuously deliver 30 % heat out-
put.

7
EN.33.C.29.
Assembly instructions | LK Wireless Room Control Cq 1, 4 & 6 (NC)
60
75
4
27,1
LK Room Thermostat Cq.
60
71 26,8
4
LK Receiver Unit Cq 1.
Technical data for transmitter
Type designation LK Room Thermostat Cq
Setting range +5 - +30 °C
Supply voltage 2 x 1.5V batteries = 3V,
alkaline (LR03)
Battery life Approximately 3 years
Control function PBM (optional 2 point)
Cycle time Approximately 10 minutes
(total on and off time)
Measurement interval Approximately 10 minutes
Type Heat/Cool
Valve exercising Once a day for 3 minutes
(can be switched off, BR1)
Temperature sensor NTC
Transfer frequency 868 MHz
Modulation FM
Aerial Intern
Transmission interval < 10 minutes
Range (typical) 100 metres free air or 2
oors or 3 walls
Protection mode IP 40
Protection class 2
Operating temperature -25 - +40 °C
Storage temperature -25 - +70 °C
Temperature limit On the adjustment dial
Measurements
3724,3
24762,5
402,2
50,2
572,5
LK Receiver Unit Cq 4.
4524,3
25297,5
402,2
50,2
572,5
LK Receiver Unit Cq 6.