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 insuf
Þ
cient, 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
ß
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 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
ß
ash with
an irregular time interval and a sound signal is heard. 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
ß
ashes, 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
ß
ashes 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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