wirsbo CoSy Radio User manual

Wirsbo CoSy Radio
Installation and Operating Instructions
Dec. 2002

2 Wirsbo CoSy Radio - Installation and operating instructions
Wirsbo CoSy Radio - Installation and operating instructions 3
Contents
1. Overview ...................................................................................................................... 3
2. Room thermostat ........................................................................................................ 3
2.1 Thermostat models ........................................................................................... 3
2.2 Function............................................................................................................. 4
2.3 Positioning......................................................................................................... 4
2.4 Setting and limiting room temperature (basic thermostat) .......................... 4
2.5 Setting room temperature (public thermostat) .............................................. 4
2.6 Temperature Set-back ....................................................................................... 4
2.7 Battery and changing the battery .................................................................... 5
3. Base unit with accessories ......................................................................................... 5
3.1 Models ............................................................................................................... 5
3.2 Function............................................................................................................. 5
3.3 Current limiter................................................................................................... 5
3.4 Positioning of base unit.................................................................................... 5
3.5 Internal and external antenna.......................................................................... 5
3.6 Alarm ................................................................................................................. 6
3.7 Pump control..................................................................................................... 6
3.8 Valve exercise.................................................................................................... 6
3.9 Timer module .................................................................................................... 6
4. Installation and Wiring ................................................................................................ 7
4.1 Preparing for installation.................................................................................. 7
4.2 Installation & Wiring of the base unit.............................................................. 7
4.3 Installation of external antenna ....................................................................... 8
4.4 Pump control..................................................................................................... 8
4.5 Installation of timer module............................................................................. 8
4.6 Registering thermostats ................................................................................... 8
4.7 Completing the installation - transmission test ............................................. 8
5. Registration and test functions.................................................................................. 9
5.1 Control panel..................................................................................................... 9
5.2 Thermostat transmission button...................................................................... 9
5.3 Registering thermostats ................................................................................... 9
5.4 Deregister one thermostat ............................................................................. 10
5.5 Deregistering all thermostats ........................................................................ 10
5.6 Transmission test............................................................................................. 10
5.7 Thermostat in transmission mode................................................................. 10
5.8 Output (Actuator) test..................................................................................... 11
6 Technical data.............................................................................................................. 12
7 Notes .......................................................................................................................... 13
8 Wiring diagram............................................................................................................ 14

2 Wirsbo CoSy Radio - Installation and operating instructions
Wirsbo CoSy Radio - Installation and operating instructions 3
Wirsbo CoSy Radio is a wireless room temperature control
system for underoor heating systems in particular. The main
components of the system are the room thermostats and the
base unit. Radio signals are transmitted from the thermostats
to the base unit, and because the thermostats are wireless,
installation is fast and simple both in new buildings and exist-
ing buildings.
Wirsbo CoSy Radio is CE-marked and has been approved for
use throughout the EU and in all former EFTA countries.
Power 1 2 3 4 5 6 7 8
Toggle OK
Fig. 1 A complete Wirsbo CoSy Radio system - thermostat,
base unit with timer, and the extern antenna.
Function
The room thermostat is installed in the room to be controlled.
Radio signals carrying room temperature information are trans-
mitted to the base unit at 2-30 minute intervals. If the room
temperature is too low, the base unit opens the corresponding
actuator. If the room thermostat stops transmitting, e.g. when
the battery has become discharged, an alarm is triggered.
The battery-operated room thermostat can easily be relocated
so that it can accommodate any future change in the use of
the room. One room thermostat is able to transmit signals to
several base units, thereby controlling several loops in a large
room or loops connected to different manifolds.
Room thermostat
The room thermostat is available in 2 models. For the basic
thermostat the temperature is set by turning a dial with raised
markings. On delivery the setting range is 6-30°C, but the
range can be limited mechanically by moving the pins under-
neath the dial.
The public thermostat has a completely plain front cover.
Controls are concealed controls and all settings are made
inside the thermostat.
The thermostats do not start transmitting until they are acti-
vated on installation. There is no transmission before this takes
place, which means that there is no battery consumption. In
normal operation the life of the battery is estimated to be at
least 5 years. The battery can be changed without tools.
Base unit
On the base unit there is a control panel consisting of buttons,
which are used to install the room thermostats and LEDs to
monitor the operation. The base unit is located close to the
manifold and connected to 230 V.
The base unit is available in two models: 4-channel or 8-
channel for use with 24 V actuators. One thermostat can be
registered to control several actuators. A built-in electronic
current limiter ensures that the base unit is not overloaded.
If several channels demand heat simultaneously, the actuators
will be switched on gradually as the current consumption in
the actuators falls.
The base unit can also control a circulation pump, i.e. switch-
off the pump when there is no heat demand.
Accessories
If there is poor reception of the radio signals, an external
antenna can be connected to the base unit. For the 8-chan-
nel base unit, a timer module for programmable set-back
temperature control is available.
Fig. 2 Wirsbo CoSy Room Thermostat Basic and Wirsbo CoSy
Room Thermostat Public
2.1 Thermostat models
Two models of room thermostat are available - a basic ther-
mostat with a set-back switch, and a public thermostats with
a plain front cover. The public thermostat is designed mainly
for use in a public environment. Both thermostats have the
same functions, but for the public thermostat all settings are
made inside the thermostat.
1. Overview
2. Room thermostat

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2.6 Temperature set-back
Temperature set-back is activated by the switch on the side of
the thermostat. For the public thermostat, the front cover has
to be removed to access the switch and so where temperature
set-back is required, this thermostat should only be used with
the timer module.
• If the switch is placed in the “clock” position
(upward), the setting is changed between
the normal (set) room temperature and
the temperature reduction according
to programmed settings on the timer
module (available only for the 8-chan-
nel base unit). If a timer module has not
been tted, the room temperature will be
controlled according to the setting on the
dial/potentiometer.
• If the switch is placed in the “sun” position
(centre position), the room temperature is
controlled according to the setting on the
dial/potentiometer.
• If the switch is placed in the “moon” posi-
tion downward), the room temperature is
controlled to approx. 4°C below the setting
on the dial/potentiometer.
2.2 Function
Radio signals carrying information on the temperature in
the room are transmitted at 2-30 minute intervals to the
base unit. The signal is repeated twice at short intervals to
reduce the risk of possible interference. When the thermostat
is transmitting a green LED inside the top of the thermostat
is illuminated. If the room thermostat stops transmitting, e.g.
when the battery has become discharged, an alarm is triggered
(see 3.6 Alarm).
To enable the base unit to distinguish between the signals
from the different room thermostats an ID number, unique
to the thermostat, is also transmitted with each radio signal.
For these signals to be received correctly each thermostat must
therefore be registered to the base unit. The thermostat can be
registered to control several channels and even registered to
control channels in several base units. The number of actua-
tors controlled by the same room thermostat in the same base
unit should be limited as the actuators will be switched-on in
sequence if several channels demand heat simultaneously. (See
3.3 Current limiter)
2.3 Positioning
The thermostat must be registered to the base unit before it is
mounted on the wall. The thermostat should be positioned on
an interior wall 1.5 - 2 m above the oor. Wherever possible,
it should be installed in a place where the effect of sunlight,
draughts, heaters, TV’s etc. is avoided. In rooms containing a
considerable amount of moisture and steam, e.g. bathrooms,
the thermostat should be located as far away from the moisture
source as possible.
2.4 Setting and limiting room temperature
(Basic thermostat)
Fig. 3 Setting the min./max. temperature
The temperature is set with a dial, which has raised markings.
The position of the long thin line on in the centre of the dial
corresponds to approx. 21°C. If the dial is turned clockwise the
temperature setting is raised (indicated by longer lines), and if
it is turned anticlockwise the temperature setting is reduced
(indicated by shorter lines).
On delivery the setting range is 6-30°C, but removing the dial
and adjusting the pins underneath can limit the range. If the
pins are pressed in towards the thermostat they can be moved
to a new position along a graduated scale. The divisions on
the scale correspond to 1°C and the graduation indicates the
deviation from the reference value, which is approx. 21°C.
6
12 24
30
18
Potentiometer
Fig 4 Open public thermostat
The highest temperature that can be set is 30°C. In this case
the left pin is in position 9 (21 + 9 = 30). To set 26°C as the
highest room temperature, the pin is moved to position 5 (21
+ 5 = 26).
The lowest temperature that can be set is 6°C. In this case the
right pin is in position -15 (21 - 15 = 6). To limit the lowest
setting to 14°C, the pin must be moved to -7 (21 - 7 = 14).
2.5 Setting room temperature
(Public thermostat)
The temperature is set on the potentiometer inside the ther-
mostat. On the printed circuit board there are markings, which
show the temperature setting in different potentiometer posi-
tions. The position where the arrow on the potentiometer
points straight up corresponds to approx. 18°C.
Fig. 5 Temperature set-back switch
minmax

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Battery
Fig. 6 Changing battery
2.7 Battery and changing the battery
The thermostat is supplied with the battery tted. To mini-
mise energy consumption and avoid unnecessary radio signals
during the storage period, the battery connection is not acti-
vated until the thermostat is registered to the base unit.
The battery is a 3.6 V lithium battery, 2000 mAh, size AA
and is estimated to have at least a 5-year life. If the battery
becomes discharged, preventing the base unit from receiving
signals from the thermostat, the base unit triggers an alarm.
(See 3.6 Alarm).
When the battery is changed care should be taken not to
damage the delicate electronics inside the thermostat!
• Remove the thermostat from the wall
• Remove the dial.
• Loosen the front of the thermostat by gently prizing off
the bottom of the thermostat.
• Change the battery.
• Press the transmission button on the back of the thermostat
and check that the LED in the upper corner lights up as
the thermostat is transmitting
• Replace the front and dial.
• Put the thermostat in transmission mode by pressing the
transmission button for at least 3 seconds (see 5.7 Ther-
mostat in transmission mode).
• Remount the thermostat on the wall and check at the base
unit if the signals are received.
All used batteries must be disposed of for recycling.
3.1 Models
The base unit is available in two models: 4-channel or 8-chan-
nel. The 4-channel unit has a separate output for pump control.
For the 8-channel base unit, one of the outputs can be used
for pump control instead.
3.2 Function
There is a control panel on the base unit (see 5.1 Control
panel), which is used to register the room thermostats and
monitor their operation. The base unit is located close to the
underoor heating manifold and connected to 230 V.
The 4-channel base unit has 4 input channels for thermostats,
which can control 4 outputs channels for 24 V actuators. The
8-channel base unit has 8 input channels for thermostats,
which can control 8 outputs channels for 24 V actuators.
To enable the base unit to distinguish between the signals from
the different room thermostats an ID number, unique to each
thermostat, is also transmitted with each radio signal. In order
for the signals to be received correctly each thermostat must
therefore be registered to a channel in the base unit. The ther-
mostat can be registered to several channels in more than one
base unit. If one thermostat is to control several actuators in
one base unit, the actuators will be switched on in sequence.
3.3 Current limiter
To prevent the base unit from being overloaded a current
limiter is built-in. The current limiter monitors the current
to the actuators. When several actuators are switched on
simultaneously, e.g. after a prolonged power failure or where
3 Base unit with accessories
one thermostat controls several actuators, the initial current
may become too high. The current limiter determines how
many actuators can be switched on immediately, and as the
starting current drops further actuators are switched on. A
maximum of 2 actuators may be connected to each output
and totally a maximum of 12 to the 8-channel base unit and
a maximum of 8 to the 4-channel base unit. To avoid uneven
oor temperatures the number of actuators controlled by the
same room thermostat should be limited to 8 in the 8-channel
base unit and to 4 in the 4-channel base unit.
3.4 Positioning of base unit
The base unit should be positioned immediately above the
underoor heating manifold, either on the wall or inside the
manifold cabinet. The base unit must be mounted horizon-
tally and in a way that facilitates access to the control panel
and removal of the base unit cover. The base unit must not be
exposed to water splashing.
3.5 Internal and external antenna
In most cases the radio signals from the room thermostats
can be received by the built-in antenna. If reception problems
arise, the base unit can be provided with an external antenna
to increase the range. If the base unit is installed in a metal
cabinet the external antenna must always be used and must be
tted outside of the cabinet. The antenna should be installed
at least 70 cm from the cabinet and other metal objects, to
avoid interference. For best reception, the external antenna
must always be mounted vertically.

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3.6 Alarm
Signals from the room thermostats are transmitted at intervals
of 2-30 minutes. If the base unit has not received a signal from
any of the registered thermostats in 2-3 hours, the alarm func-
tion is activated. The LED for the relevant channel will start to
ash. Whilst a channel is in the alarm condition the actuator
output will be continuously activated for seven minutes and
closed for 14 minutes.
Where the alarm switch is in the ON position in the base
unit (see Fig 10 and 4.2 Installation and wiring of the base
unit), an acoustic signal (buzzer) will also start to sound after
a further 8 hours if the base unit has still not received a signal.
The acoustic alarm is switched off by pressing any button on
the base unit.
Once the base unit receives a signal again, the visual and audible
alarms will stop. Alternatively interrupting the current to the
base unit will shut off all the alarm functions.
Check the following when an alarm is triggered:
1. Remove the thermostat from the wall
2. Remove the dial and loosen the front of the thermostat by
gently pringing off the bottom of the thermostat.
3. Press the transmission button on the back of the thermostat
and check that the LED in the upper corner lights up as a
sign of the thermostat transmitting.
4. If the LED:
does not ash: Change the battery See 2.7 Battery and
changing the battery
does ash: Put the thermostat in transmission mode by
pressing the transmission button for at least 3 seconds (see
5.7 Thermostat in transmission mode). Check with dif-
ferent positions of the thermostat what is interfering with
the transmission.
3.7 Pump control
8-channel base unit
Channel 7 and 8 of this base unit are designed to either be
used for actuators or alternatively for pump control, etc. For
both outputs the pump is started as soon as a thermostat calls
for heat. If the pump is connected to channel 7 it will stop
as soon there is no call for heat. If the pump is connected to
channel 8, it will stop after a 10 minute delay, which means
that the circulation pump continues running as the actua-
tors close. If the pump is connected to channel 8 and “valve
exercise” has been selected in the base unit, the pump will be
exercised daily (see 3.8).
Changing either channel 7 or channel 8 to pump control is
carried out according to 4.4 Pump control.
Note! As long as no thermostat has been registered on channels
7 and 8, the outputs will act as pump outputs. As soon as one
of the other channels is activated, these channels will also be
activated, i.e. if actuator 1 calls for heat, both channel 7 and
channel 8 will be activated. If the underoor heating system
is commissioned in stages and the thermostats are registered
when each heating loop is commissioned, actuators must not
be connected to channels 7 and 8 until their thermostats have
been registered and the heating loops coils have also been com-
missioned.
4-channel Base unit
The pump is connected to the separate pump output. The
pump is started as soon as a thermostat calls for heat and stops
after a 10 minute delay after the last call for heat. If valve exer-
cise is selected (see below), the pump will be exercised daily.
The separate pump output has no LED on the control
panel.
3.8 Valve exercise
Valve exercise is used to prevent the underoor heating
manifold valves from seizing or sticking after a prolonged
inactive period. All the actuators and occasionally the pump
are activated for 5 minutes once a day. The LEDs will
go on and off according to the valve exercise. During this
exercise period LEDs will not ash if any of the thermostats
transmit, but the signals are registered and when the exercise
cycle is completed the actuators will be controlled according
to the signal.
The exercise is performed at the same time of day as the time
when the base unit last time was connected to 230 V. Interrupt
and then re-connect the power at desired time to change the
time of the exercise.
Valve exercise cycle:
• All terminals with a registered thermostat are activated for
5 minutes
• All outlets are closed 5 minutes
• Pump terminal on base unit with 4 outlet and terminal 8
(8-channel if no thermostat is registered) are activated for
5 minutes
• Pump terminal and terminal 8 are closed for 5 minutes
The function is deactivated by setting the valve exercise func-
tion switch in the base unit in position OFF (see Fig 10 and
4.2 Installation and wiring of the base unit).
3.9 Timer module
A timer module, which is used for programmed temperature
set-back, is available for the 8-channel base unit. The timer
is a 2-channel 7-day digital clock, which is supplied recessed
in a new cover to t the base unit. Timer channel 1 controls
the temperature set-back for base unit channel 1, 3, 5 and 7,
and channel 2 controls the temperature set-back for base unit
channel 2, 4, 6 and 8.
For installation see 4.5 Installation of timer module. Settings
are made according to the separate manual supplied with the
timer module.
Fig. 7 Removing and replacing base unit cover.

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Wirsbo CoSy Radio - Installation and operating instructions 7
ACTUATOR
NC->NO
EXERCISE
OFF->ON
BUZZER
OFF->ON
SW 1
SW3
SW2
Fig. 10 Switches in base unit
Fig. 8 Break off the plastic where the cable will pass
Fig. 9 Squeeze the cable together and push it into the cable
channel
4.1 Preparing for installation
Prepare for the installation by deciding which underoor heat-
ing loops are to be connected to which channels and which
thermostats. If using the timer module for programmed
temperature set-back, consider using the timer’s capacity for
programming two different time programs (channel 1 and
channel 2) and the actuators which will be registered to either
channel (timer channel 1 = base unit channel 1, 3, 5, 7 and
timer channel 2 = base unit channel 2, 4, 6, 8).
Before installation commences, mark each thermostat with a
room designation or similar to avoid confusion. Enter all the
information in chapter 7 Notes.
4.2 Installation and wiring of the base unit
Position the base unit immediately above the underoor heat-
ing manifold, either on the wall or in the manifold cabinet.
The base unit must be mounted horizontally and in a suitable
position for ease of access to the control panel and for removal
of the base unit cover. Secure the base unit with two screws.
Installation is easier if the cover is removed rst. There is a
plug connection to the 230 V mains.
1. Ensure that the base unit is isolated from the mains.
2. Slacken the screws and lift the cover.
3. Remove the internal antenna (the green frame)
4. Remove the LED cable at the bottom of the base unit, then
remove the base unit cover.
5. Install the base unit above the underoor heating manifold.
6. Connect the cables from the actuators to the relevant
terminal block. Connect a maximum of two actuators per
terminal block. The blue terminal blocks can be detached
from the board for easy connection.
7. Check that the actuators have been connected to the correct
output.
8. Pump control in 4-channel base unit: connect the pump
to the separate pump terminal block.
Pump control in 8-channel base unit: connect the pump
to either output 7 or 8, which should then be re-wired.
See 4.4 Pump control.
9. Instal the timer module where used. See 4.5 Installation
of timer module
10. Check that the selector switch for actuator type (SW1
Actuator) at the bottom of the base unit is in the NC
position.
11. Check that the selector switch for valve exercise (SW2 Exer-
cise) is in the desired position. (See 3.8 Valve exercise).
12. Check that the selector switch for acoustic alarm (SW3
Buzzer) is in the desired position. (See 3.6 Alarm).
13. Connect the LED cable to the LED contact marked MM1
MODULE.
14. Replace the internal antenna or connect an external
antenna.
15. Replace the cover.
16. Reconnect the unit to the mains supply / connect the
plug.
4. Installation and wiring
Installation and wiring must be carried out by a suitably qualied person.
Socket for LED cable Socket for Timer module cable

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Wirsbo CoSy Radio - Installation and operating instructions 9
4.3 Installation of external antenna
Connect the antenna to the socket marked . See 1-3 and 14-
16 in 4.2 Installation and wiring of the base unit. The antenna
must be mounted vertically for best reception and should be
located at least 70 cm from the manifold cabinet and other
metal objects. Avoid permanently xing the antenna in position
until the system has been test run to check that all thermostats
have good radio contact with the base unit.
4.4 Pump control
In the 4-channel base unit connect the pump to the separate
pump output, marked . In the 8-channel base unit the
pump control is connected to output 7 or 8. The operation
and difference between the two outputs are described in 3.7
Pump control.
1. Isolate the base unit from the mains.
2. At the relevant terminal block, remove the wire loops which
are connected perpendicularly, see Fig. 11.
3. Ret one of the loops as shown in Fig. 12.
4. Connect the pump phase cable to the relevant output.
5. Continue with the installation according to 4.2
Fig. 11 Changing output / or 8 to pump control. First remove
wire loops
Fig. 12 Changing output 7 or 8 to pump control. Ret one of
the loops.
4.5 Installation of timer module
(For 8-channel base unit only).
The timer module is supplied tted in to a new cover for the
base unit.
1. Ensure that the base unit is isolated from the mains.
2. Unscrew the base unit cover, loosen the internal antenna
and remove the LED cable from the bottom of the base
unit.
3. Unscrew the LED panel from the cover and transfer it to
the new cover.
4. Reconnect the LED cable to the output marked MM1
MODULE.
5. Connect the timer cable in the output marked TIMER
and t the antenna.
6. Fit and screw on the new cover.
7. Connect the mains.
The timer module is now ready for programming. See separate
programming instructions supplied with the timer module.
4.6 Registering thermostats
The system is now ready for registering the thermostats
as described in Chapter 5. The thermostats should not be
mounted on the wall until they have been registered to the
base unit.
Note! 8-Channel Base Unit: As long as no thermostat has been
registered on channels 7 and 8, the outputs will act as pump
outputs. As soon as one of the other channels is activated,
these channels will also be activated, i.e. if actuator 1 calls for
heat, both channel 7 and channel 8 will be activated. If the
underoor heating system is commissioned in stages and the
thermostats are registered when each heating loop is commis-
sioned, actuators must not be connected to channels 7 and 8
until their thermostats have been registered and the heating
loops coils have also been commissioned.
4.7 Completing the installation - transmission test
After all the thermostats have been tted in position a nal
inspection of the transmission between thermostats and base
unit must be carried out according to 5.6 Transmission test.
If the transmission operates satisfactorily any external antenna
supplied can be permanently installed. Also check that the table
in chapter 7 Notes has been correctly completed.

8 Wirsbo CoSy Radio - Installation and operating instructions
Wirsbo CoSy Radio - Installation and operating instructions 9
Power 1 2 3 4 5 6 7 8
Toggle OK
Fig. 13 Control panel
5.1 Control panel
The base unit control panel consists of a series of LEDs and
buttons indicating the following:
• mains voltage
• 4 or 8 LEDs for each output,
• 2 input buttons: -Toggle and OK.
The output LEDs, may either be off, illuminated with a
permanent light, or may ash with both a slow and very fast
frequency. From now on the term “ash” will be used to refer
to slow ashing, and “icker” for fast ashing.
When the base unit receives a signal from a room thermostat
the corresponding LED ashes two-three times.
When the actuator is activated, i.e. call for heat or valve exer-
cise, the corresponding LED illuminates.
If the current limiter causes the actuators to be activated in
sequence, all the LEDs concerned come on simultaneously
including the LEDs for those outputs not yet activated.
5.2 Thermostat transmission button
On the back of the thermostat there is a transmission button,
which can be pressed with the tip of a ballpoint pen or similar.
If the button is pressed and immediately released again the ther-
mostat will transmit a signal to the base unit. A new thermostat
will, at the same time be activated and will start measuring
temperature and send information to the base unit.
If the transmission button is pressed and held for at least 3
seconds, the thermostat will send a signal for 5-6 minutes at 3-7
second intervals. See 5.7 Thermostat in transmission mode.
Transmission button
Fig. 14 Transmission button
5.3 Registering thermostats
Put the base unit into registration mode:
• Ensure that the mains voltage LED is illuminated.
• Press and hold the Toggle and OK buttons simultaneously
for three seconds. The LEDs will icker.
• First release the Toggle button and then release the OK
button.
The base unit is now in registration mode. The LEDs for the
channels, which have thermostats registered light up and the
others remain off.
Registering the thermostat:
• Press and release the thermostat transmission button.
• When the thermostat transmits its signal, the LED inside
the thermostat ashes. When the signal is received by the
base unit the LED for the rst free channel will start ash-
ing.
• Press Toggle to select the next free channel.
• When the LED for the required channel ashes, press and
hold the OK button to conrm the registration. The LED
ickers whilst registration is taking place.
• When the LED is illuminated, registration is completed
and the OK button can be released.
If one thermostat is to control several channels, repeat the
thermostat registration procedure. Install all thermostats in
the same way.
When the nal thermostat has been registered, press the
Toggle button for approx. 3 seconds. If no button is pressed
for about 5 minutes the base unit automatically returns to the
normal mode.
Power 1 2 345678
Toggle OK
Power 1 2 345678
Toggle OK
P
u
s
h3 sec.
1
2
Push
Fig. 15 Setting base unit in registration mode
5. Registration and test functions

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Wirsbo CoSy Radio - Installation and operating instructions 11
Power 1 2 345678
Toggle OK
Power 1 2 345678
Toggle OK
P
u
s
h3 sec.
2
1
Push
Fig. 15 Setting base unit in ”remove” mode
5.4 De-register one thermostat
See also 5.5 De-registering all thermostats
• Press and hold the Toggle and OK buttons for three sec-
onds. The LEDs icker.
• First release the OK button then release the Toggle but-
tons.
The base unit switches to “remove” mode. The LED for the rst
channel registered to a thermostat ashes and the LEDs for the
other channels which have been registered illuminate.
• Press Toggle to select the channel to be un-registered.
• When the LED for the required channel ashes, press and
hold the OK button to conrm the de-registration. The
LED ickers whilst de-registration is taking place.
• Release the OK button once the LED goes out. De-regis-
tration is completed.
• The LED for the next channel with a registered thermostat
starts to ash.
• Press Toggle to select a different channel to de-register.
Conrm with OK.
• Complete the de-registration process by pressing the Toggle
button for about 3 seconds. If no button is pressed for
about 5 minutes the base unit returns automatically to
normal mode.
5.5 De-registering all thermostats
• Isolate the power supply to the base unit.
• Press Toggle and OK simultaneously.
• Power-up the base unit. The LEDs light up one by one.
• After all the LEDs have come on they start to icker. First
release OK button and then release the Toggle button. The
LEDs ash in turn, then go out.
All thermostats are de-registred.
5.6 Transmission test
This function is used to check that all channels are receiving
signals from the respective room thermostats. Whilst the test
is in progress the outputs are temporarily disconnected and
all the actuators will close.
• Press the OK button on the control panel until all the LEDs
begin to icker (approx. 3 seconds), then release the button.
The LEDs for all channels registered room thermostats are
illuminated.
As the base unit receives a signal from a room thermostat the
LED for the corresponding channel(s) will ash twice, then
go out. LEDs remain illuminated for those channels that
have not received a signal from their corresponding room
thermostats.
Normally, room thermostats transmit at intervals of up to 30
minutes. To force a transmission, slide the set-back switch. The
thermostat will then transmit within two minutes.
• When all the LEDs have gone out, press and hold the
toggle button for 3 seconds to complete the test.
The system returns automatically to normal mode approxi-
mately 5 minutes after the last channel has received a signal or
15 minutes after the button is pressed for the last time.
Those channels that have not yet transmitted will trigger the
alarm (see 3.6 Alarm).
5.7 Thermostat in transmission mode
This function can be used to facilitate fault nding if problems
arise with the transmission. The thermostat will transmit a
signal for 5-6 minutes at intervals of 3-7 seconds, during which
time the transmission can be checked for different thermostat
and external antenna positions.
• Press the transmission button on the back of the thermostat
for at least 3 seconds. During transmission the LED inside
the thermostat ashes. When transmission is operating
properly the corresponding LED on the base unit will ash
after a slight delay.
• Press the transmission button on the thermostat again to
complete the transmission test.
It is important to check the transmission whilst the thermostat
is close to its nal installation position.

10 Wirsbo CoSy Radio - Installation and operating instructions
Wirsbo CoSy Radio - Installation and operating instructions 11
5.8 Output (Actuator) test
This function is used to inspect the outputs.
• Press the Toggle button until the LEDs for all the channels
start to icker. When the button is released the LED for
channel 1 will alternately icker and go out (if the terminal
is closed before starting the test) or icker and light up (if
the terminal is activated before starting the test).
• Press OK to start the test for channel 1. When the chan-
nel is set to test mode the LED starts to icker, remain
illuminated and then go out.
After about 5 seconds a soft “click” will be heard indicating
that the output relay has been activated.
• Press Toggle to go to next output. (To go from 8 to 1 Toggle
must be pressed twice).
• Press OK to start output test for the current output.
• The led lights up: The output is activated (or is waiting to
be activated depending on the current limiter).
• The led is not illuminated: The output has not been acti-
vated.
• The led ickers and goes out: The output test has not been
activated but can be activated by pressing OK.
• The led ickers and lights up: The output is activated but
can be closed by pressing OK.
• The led ickers, lights up and goes out: The output is
activated and can be deactivated by pressing OK.
To interrupt the test, press Toggle until all the LEDs icker.
The system returns automatically to normal mode about 10
minutes after the button has been pressed for the last time.
Note! If several outputs are tested simultaneously, the built-in
current limiter will connect the outputs in sequence. Depend-
ing on the number of actuators connected, it will take a few
minutes for all the outputs to be activated. Hence the output
test should not be done with more than 8 and 4 actuators
respectively activated at the same time.

12 Wirsbo CoSy Radio - Installation and operating instructions
Wirsbo CoSy Radio - Installation and operating instructions 13
Base unit with 8 outputs:
Max. number of thermostats 8 (7 if pump control is installed)
Max. number of actuators per unit 12
Max. number of actuators per output 2
Recommended no of actuators per thermostat Max. 8
Current limitation, 24 V Approx. 1.5 A
Outputs 1-6 24 V max. 1 A relay controlled
Outputs 7-8 24 V max. 2 A relay controlled, may be connected to relay, 1-pole closing
for 230 V max.
Re-activation of Output 8 10 mins.
6. Technical data
Base unit with 4 outputs:
Max. number of thermostats 4
Max. number of actuators per unit 8
Max. number of actuators per output 2
Recommended no of actuators per thermostat Max. 4
Current limitation, 24 V Approx. 650 mA
Outputs 1-4 24 V max. 1A relay controlled
Pump output Max. 2 A, 1-pole, closing for 230 V max
Re-activation of pump output 10 mins.
Thermostat
Colour RAL 9010
Temperature scale 6-30°C +/- 2 K
Hysteresis +/-0.5°C
Precision +/-2°C
Temperature reduction 4°C @ 20°C
Life of battery At least 5 years
Battery type 3.6 V lithium battery, 2000 mAh, type AA
Signal range ~30m (spherical)
Frequency 433.70 MHz
Transmission interval 2-30 mins.
Ambient temperature 0-50°C
Humidity Less than 90% RH
Tightness class IP20
Base unit, general:
Colour RAL 9010
Primary mains voltage 230 V AC
Secondary mains voltage 24 V AC
Valve exercise (optional) Once every 24 hours
Ambient temperature 0-50°C
Humidity Less than 85% RH
Tightness class IP20
Fuse 230 V T200 mA
All settings made are retained in the event of a power failure

12 Wirsbo CoSy Radio - Installation and operating instructions
Wirsbo CoSy Radio - Installation and operating instructions 13
7. Notes
Output Timer Room Actuator
1 1
2 2
3 1
4 2
5 1
6 2
7 1
8 2
Output Room Actuator
1
2
3
4
Example:
1 1 Kitchen 1,2
2 2 Bathroom 3

14 Wirsbo CoSy Radio - Installation and operating instructions
Wirsbo CoSy Radio - Installation and operating instructions 15
WIRSBO WIRSBO
Transformer
230 V
230 V
24 V24 V
External
Antenna Fuse T 200 mA
Output for actuator or pump relay
Fig. 17 Base Unit, 8 channels
8. Wiring diagrams
Output 7 and 8 wired for actuator Output 7 or 8 wired as pump relay

14 Wirsbo CoSy Radio - Installation and operating instructions
Wirsbo CoSy Radio - Installation and operating instructions 15
Fig. 18 Base Unit, 4 channels
WIRSBO WIRSBO
Transformer
230 V
230 V
24 V24 V
External
Antenna Fuse T 200 mA
Output for actuator or pump relay

Uponor Wirsbo AB
Box 101 Tel [phone]
SE-730 61 Virsbo Fax [phone]
Sweden www.wirsbosystems.com
In keeping with our policy of continuous improvement and development, Uponor
Wirsbo AB reserves the right to change specications without prior notice.
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