LK Cq User manual

LK Actuator 24V AC
Connect the actuators, bearing in mind the following:
A control zone consists of 1 LK Room Thermostat (trans-
mitter) but can contain one or more under ßoor heating
loops equipped with actuators. All actuators in a control
zone must be connected to a common channel on the
receiver unit.
LK Actuator.
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, a or c respectively, for
connecting the actuators. Cq4 and Cq6 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.
Fig. 1. Circuit diagram Cq 4, (M = actuator).
Fig. 2. Circuit diagram Cq 6, (M = actuator).
DESIGN
The LK Room Thermostat Cq (transmitter) regulates the
temperature in a zone (e.g. a room) via radio 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 principles, but
the Cq 1 unit, which only has one receiver channel, differs
somewhat in its design. The instructions for this model
therefore contain a few additions.
REQUIREMENTS
Asuitably qualiÞed electrician or installation engineer, must
carry out electrical installation in accordance with the
circuit diagram Þgs. 1 + 2. To achieve protection class 2,
all necessary installation measures must be taken.
Installation and start-up (memorizing) is best carried out
in the following order:
The receiver unit
The receiver unit should be located close to heating circuit
manifold to avoid lengthening the actuator connection
cables.
In certain circumstances, the transmitters (thermostat)
signalmaybetooweak,e.g.ifthereceiverunitisassembled
in a metal enclosure (e.g. LK Manifold Cabinet). In these
cases, the LKAntenna Cq. Should is used. (See separate
section, LK Antenna Cq.)
Assembly instructions
LK Wireless Room Control Cq (NO)
a
channel 1
Mains
A
C 230V
Supply AC 24V
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
a
channel 1
Mains
A
C 230V
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 24V
LK Transformer
EN-33.C.14.1-6.0501
1

A
B
C
D
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 remove the
transport protection covering the batteries.
Check the mains switch (A) is in the lower position towards
the heat symbol as shown in the picture. During memo-
rizing, the thermostat will attempt to communicate with
the activated channel on the receiver unit. Memorizing
can take place before the thermostat is assembled in the
intended place. The distance between the thermostat
and the receiver should be at least 2 metres during
memorizing.
NB: Mark the thermostat with the channel number that
it will be sent to. (e.g. with tape on the inside of the door.)
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 connect up to
eight actuators to Cq1 by using an external wiring /
junction box. In both cases the actuators are connected
parrallel to each other and in line between terminal 9
and the LK Transformer.
Fig. 3. Circuit diagram Cq 1, (M = Actuator).
LK Transformer 230/24 V AC
A transformer 60 VA for 24V AC supply is connected in
accordance with the circuit diagram for each receiver unit.
230V mains voltage connection
• Connect the receiver unit and the transformer to the
mains.
• Check the primary and secondary voltage.
• Reassemble the protection box on the receiver unit
before Memorizing/Start-up.
MEMORIZING / ACTIVATION - START-UP
Reset
Always begin memorizing by Þrst erasing all previous
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.
N
9
Supply AC 24V
LK Transformer
Mains AC 230V
2
M
M
EN-33.C.14.2-6.0501
!
!
2

3
EN-33.C.14.3-6.0501
Channel 1Channel2Channel3Channel4Reset Power
Cq
A
ntenna holder to be
placed on the wall
a minimum of
200 mm from
metal objects
Antennaholder
160mm
25 mm
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 channel that is to be activated
Þrst. 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).
• Brießy 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 receiver. Once contact is established,
the sound signal will cease and the indicator light will
go out.
• Press the upper button on the room thermostat 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 battery power.)
Function control
Place the room thermostat in the room where it is intended
to be assembled according to the design. By turning the
thermostat’s adjustment dial, the indicator light on the
receiver’s channel will be lit or switched off respectively
within approximately 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.
NB: The receiver Cq 1 works the opposite way.
If the light switches off when it should come on, check
that the mains switch’s setting is in the lower position
towards the heat symbol. See the section LK Room
Thermostat Cq. If the setting was right and the problem
continues, see the section ”Heat/Cool”.
NB: 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 informa-
tion, see the section “Pump Control”.
ADDITIONAL MEASURES
Assembling the room thermostat
Open the room thermostat by pulling the temperature 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 fol-
lowing guidance should be followed:
• Mount it on an inner wall where it is ventilated 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 outside, 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 ßoor.
• 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.
Completing activation / memorizing
Continue activation / memorizing in the same way as for
the other channels, following the instructions for the
LK Room Thermostat Cq.
LK Antenna Cq
The LKAntenna Cq is intended to be used when the radio
connection between the room thermostat and the receiver
unit is unsatisfactory.
The antenna is assembled as follows:
• The antenna holder is supplied with self-adhesive tape
and is attached to the top of the receiver unit. The
stripped part of the antenna is pulled through the
antenna holder until it appears on the other side.
• The other end of the antenna is pulled to the outside
of the enclosure and is assembled in the same way,
placed at least 200 mm from any metal objects.
!

EN-33.C.14.4-6.0501
Pump control for Cq 4 and Cq 6
Channel 4 or channel 6 can be used for zone control
(e.g. a room) or alternatively to start/stop a circulation
pump. Pump control can be arranged via an external
relay for 24/230 V. For further information, please contact
LK Technical Backup.
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 receiver unit at
the same time as the button for “Channel 2”.
• First release “Reset” followed by the “Channel 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 insufÞcient, the radio signal
can be strengthened with another aerial. See the section
“LK Antenna Cq”.
Heating & Cooling
The equipment is constructed so that it can be used to heat
(under ßoor 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 switch
A to the upper position.
Alternative 2
Changing the whole installation by reprogramming 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”.
NB: For the Cq 1 unit, the change is made on the room
thermostat.
Alarm
When a fault occurs, the indicator light begins to ßash with
anirregulartime interval and a soundsignalisheard. During
signal disruption, the affected channel will deliver approxi-
mately 70% heat output.
Temporary interruption
If no signal is received from the room thermostat (trans-
mitter) for a period between 1 to 10 hours, the indicator
light on the receiver unit will display short ßashes, but
no sound signal. Acknowledgment of the alarm occurs
automatically if the transmitter signal reoccurs.
Prolonged interruption
If no signal is received from the room thermostat (transmit-
ter) for a period of more than 10 hours, the indicator light
on the receiver unit will display short ßashes and a sound
signal is emitted. Acknowledgment of the alarm occurs
automatically if the transmitter signal is regained. In the
event of a loss of power in the receiver unit, no pro-
gramming will be affected. Operation will continue as
normal once power is restored.
Acknowledgment of the alarm
To acknowledge a disruption, interrupt “Memorizing”, or
end a connection test, press “Reset” on the receiver unit.
The output will return to the basic position. When the next
control signal comes after approximately 10 - 20 minutes,
the output will return to its correct position. Any radio
connection established will not be affected.
Valve exercising
The actuator disconnects once a day for 3 minutes 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, loosen the screw and lift
the cover. Remove vertical 1, which is marked with BR1 on
the printed circuit card.
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EN-33.C.14.5-6.0501
TECHNICAL DATA FOR RECEIVER
CQ1, CQ4 & CQ6
Supply voltage AC 230V + 24V, 50/60HZ
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 potential
free
AC24V - 230V for Cq 4 - 6 Max. 8 A cos ϕ= 1
Max. 2 A cos ϕ= 0.6
AC24V - 230V for Cq 1 Max. 16 A cos ϕ= 1
Max. 2 A cos ϕ= 0.6
Number of actuators AC 24V For Cq 4 - 6 = 4
2-3 VA NO/NC, which can For Cq 1 = 8
be controlled per relay output
Maximum number of actuators 16
within same receiver unit
NB: Trouble free operation cannot always be
guaranteed due to possible external interference
sources.
5
Description of Functions - Room Thermostat
Control occurs using pulse width modulation (PBM), which
is intended for actuators. The control signal, which is calcu-
lated from the difference between the actual temperature
and the temperature entered, is emitted in the form of a
signal 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 thermostat
When the indicator light ßashes with 15-second intervals,
the batteries should be changed within a few days. The
batteries are located under the battery cover. For infor-
mation 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 70% heat output.
Connection check
After using the receiver unit’s “Reset” function, the
respective channel’s indicator light will indicate, by a short
ßash, that the connection has been established.

60
71 26,8
4
3724,3
24762,5
402,2
50,2
572,5
4524,3
25297,5
60
75
4
27,1
LK Room Thermostat Cq.
LK Receiver Unit Cq 1.
LK Receiver Unit Cq 4.
LK Receiver Unit Cq 6.
402,2
50,2
572,5
EN-33.C.14.6-6.0501
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 ßoors 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
6