EUROSTER C6RX User manual

EUROSTER C6RX –INSTALLATION AND OPERATION MANUAL 1
EUROSTER C6RX
Wireless floor heating control module
In order to take full advantage of controller capabilities please read this installation and operation manual
carefully.
MANUFACTURER: P.H.P.U. AS, Chumiętki 4, 63-840 Krobia, Poland
This manual is intended for v.1 08.2022 version of the controller.
1. APPLICATION
The Euroster underfloor water heating control system is a state-of-the-art solution ensuring the best
temperature comfort and optimum use of heating energy.
Euroster C6RX module is designed to independently operate 6 heating zones. It controls the actuators
installed on the floor heating distributor and controls the operation of the circulating pump and heating
source.
The system's superiority lies in the possibility of connecting up to 4 C6RX modules (control of
24 zones) and adding an RXC6 receiver that switches the heating source on using wireless
communication.
The module has an input to connect the external clock or room thermostat, e.g. Euroster 4040 Smart.
Once the ECO input is shorted, the module switches all thermostats connected to the Euroster C6RX
module to an economical temperature.
The components of the system:
•Wireless Euroster C6RX module
•Wireless Euroster 4040TXC6 weekly thermostat
•Wireless Euroster 4020TXC6 daily thermostat
•Wireless Euroster RXC6 receiver
•Wired Euroster T1NC actuator.
ATTENTION: The C6RX module does not control the water temperature in the system.
2. BASIC MODULE FUNCTIONS
•Independently operates 6 heating zones and a maximum of 12 actuators installed on the floor
distributor
•Enables wireless connection of 4 C6RX modules in order to extend the heating system (24
independent zones with up to 48 actuators)
•Cooperates with Euroster 4040TXC6 and 4020TXC6 wireless room thermostats
•It is equipped with outputs used to control circulating pump and heating boiler
•Features possibility of wireless control of the boiler by assigning Euroster RXC6 receiver to the
module
•Enables switch-over between heating and cooling operation
•Cooperates with thermoelectric, normally closed (NC) actuators featuring on-off control fed with
230 V 50 Hz,
•Possibility to delay pump switch on / switch off
•Input intended for switching on ECO mode
•Energy saving function
•Possible DIN rail mounting
EUROSTER C6RX module is equipped with an ANTI-STOP system that prevents the seizing of an
idle pump rotor and valves. It regularly activates the actuator and pump outputs for 4 minutes when the
heating season is over. Keep the device on to allow the Anti-Stop operation after the heating season.
C6RX module is further equipped with a frost protection system which runs a given heating zone with

EUROSTER C6RX –INSTALLATION AND OPERATION MANUAL 2
pump and boiler output for 20 minutes every 2 hours if the communication with the thermostat is lost.
3. SYSTEM DIAGRAM

EUROSTER C6RX –INSTALLATION AND OPERATION MANUAL 3
4. C6RX MODULE VISIBLE ELEMENTS
5. SIGNALS
Designation
Color
Signal
HEAT/COOL
Orange
Continuous light –heating mode
Flashing –cooling mode
1, 2, 3, 4, 5, 6
Red
Signal of active actuator output
Radio status
1,2, 3, 4, 5, 6
Green
Signal of radio communication status
Continuous light –correct operation
Flashing –no communication with the thermostat
Pump
Orange
Continuous light –active CH pump output
Flashing –active CH pump output, shorted INPUT
RX STATUS
Orange
Status of communication among other Euroster C6 heating
control system components.
Continuous light –MASTER switch is switched on (the master
module communicates with other system components).
Flashing –no communication with one of the connected
devices (only in the case of cooperation with further C6RX
modules or an RX receiver.)

EUROSTER C6RX –INSTALLATION AND OPERATION MANUAL 4
6. DESCRIPTION OF INPUTS
Heat/Cool –When the input is
shorted the module operates in
the cooling mode, otherwise it
operates in the heating mode.
Signal:
Heating mode –HEAT/COOL
light is on
Cooling mode –HEAT/COOL
light flashes
ECO –When the input is open
the thermostats operate
according to their own settings.
When the input is shorted, the
thermostats connected to the
C6RX module switch into ECO
mode.
ECO temperature is set
individually at each thermostat
and may be different in
different rooms. You may
connect e.g. an external
controller or switch activating
the economical temperature to
the ECO input.
Input –shorting this input
switches on the pump output
and the boiler output. The input
may be used to connect other
floor heating modules, e.g.
wired Euroster T6 module.
7. DESCRIPTION OF SWITCHES
6-section switch:
Pairing –used to select a zone from 1 to 6 that we wish to assign to the
thermostat.
4-section switch:
1. Start delay 3 min –if switched on (ON position) then the pump is activated
with a 3-minute delay. It is switched off by default.
2. Stop delay 3 min –if switched on (ON position) then the pump is stopped
with a 3-minute delay. It is switched off by default.
3. PM pump / local –used if several C6RX modules cooperate. After switching
the function on (ON position) the pump input is switched on in the module to
which the controller is assigned. In the other C6RX modules the pump output is
not activated. When this function is not active, the pump output is switched on
in each C6RX module. It is switched off by default.
4. Master C6RX –it determines which C6RX module is the master. The module
with MASTER switch active (ON position) is paired with further C6RX modules
and a wireless RXC6 receiver.
The factory setting is the MASTER switch being switched off.

EUROSTER C6RX –INSTALLATION AND OPERATION MANUAL 5
8. INSTALLATION
GENERAL SAFETY RULES
◼Prior to the commencement of any installation works, read this manual
carefully! Incorrect installation and control of the module result in the loss of
the manufacturer's warranty.
◼Prior to mounting or dismantling the device make sure that the module is de-
energized. Connection and disconnection of actuators must also be performed
when the device is de-energized.
◼Voltages hazardous to life may be present on the module and its connections,
therefore only qualified and authorized technicians may be entrusted with the
installation of the controller.
◼The performed electric connections and cables used shall be adequate to the
applied loads and must conform to all requirements.
◼Do not install the device in rooms with increased humidity; protect it against
water and other liquids.
◼The controller is designed for 35 mm DIN rail mounting in a distribution
cabinet.
◼Do not install a device showing signs of mechanical damage.
◼The module is not a safety component. Additional protection devices must be
used in systems prone to the risk of damage due to the failure of control
systems.
◼The device is not intended for use by children!
◼Should there be any problem with the proper operation of the set, please
contact your technician or the manufacturer!
CAUTION! When connecting power cables, pay particular attention to the correct
connection of protective conductor cores.
8.1 Connecting cables
Connecting actuators
The module cooperates only with NC-type
(normally closed) actuators fed with 230 V 50 Hz.
It is possible to connect up to two Euroster T1NC
actuators to each of the six heating zones.
Connect the actuators to L and N terminals –
output 1-6.
Boiler Connection Output
The (voltage-free, change-over) BOILER output
is used to switch on the heating source, e.g.
gas-fired boiler. It has 3 pin-outs marked as NC,
COM and NO. It withstands the mains voltage of
230 V and the load of 3 A. The boiler is usually
connected to the COM-NO terminals.

EUROSTER C6RX –INSTALLATION AND OPERATION MANUAL 6
Output used to connect the CH PUMP.
Pump cables to be connected to the “PUMP”
connector.
CAUTION! When connecting the power
cables, pay particular attention to the
correct connection of the PE conductor.
Antenna
The antenna is screwed into the antenna
connector. It may operate in a vertical
position.
Caution! In case, if the distances
between Euroster C6 system devices
are significant we recommend using an
external antenna (with a magnet, to be
installed on the outside of the
distributor cabinet).
The external antenna is not included in
the set and must be ordered separately!
Connecting power
The module is fed with 230 V 50 Hz.
CAUTION! When connecting the power cables, pay particular attention to the correct
connection of the PE conductor.
9. PROGRAMMING
9.1. Programming/pairing (assigning thermostats to individual zones)
Having checked the correct connection of cables assign the thermostats to individual zones. Prior to the
commencement of programming make sure that the antenna is correctly connected.
Inside the device, there is a six-way switch intended for programming.

EUROSTER C6RX –INSTALLATION AND OPERATION MANUAL 7
To enter the pairing mode switch a selected lever to the “ON” position.
The procedure of assigning a thermostat to a selected zone or zones:
•Unscrew the four screws and remove the front cover
•Connect the module to the mains power supply
•Put the switch of the selected zone (1-6) to the “ON” position – pairing mode is signaled by a
flashing green light. Several zones may be assigned to one thermostat, as required.
•Insert the batteries to the thermostat to be assigned to the selected zone, enter the service menu
(simultaneously press and hold the central and right button on the thermostat) and switch on the
pairing option (E4040TXC6 –icon, E4020TXC6 –P icon).
•Press (do not hold) the button on the C6RX module –the green and red lights start to flash
alternately –the module waits for the signal from the thermostat Storing the thermostat in the
module’s memory is signaled with green light being lit.
Thermostat displays in the programming mode.
The thermostat is stored in the
module’s memory, zone 1 –
Master thermostat (M).
E4040TXC6
The thermostat is stored in the
module’s memory, and the zone
number is shown as soon as the
OK sign disappears.
E4040TXC6
•Put the PROG switch into idle position (the switches down). Correctly programmed zones are
signaled with green diodes lit up.
•Program the other zones in a similar manner
•Having programmed all zones, put the PROG switch in idle position (switched down) –make sure
that the levers snapped in this position.
•Install the front cover.
Caution! Pairing mode is available only for 1 hour after connecting the module to power!
9.2. Deleting / Restoring factory settings
If you need to delete a channel, follow the procedure below:
•Set the PROG switch with the numbers of selected channels to the “ON” position – green lights
will be lit in the selected channels.
•Press and hold for 5 seconds the button in the C6RX module, until the green light is switched off.
•Set the PROG switch to the idle position. The deleted channels will not be active until they are
reprogrammed.
To restore the module’s factory settings set switches nos. 1 to 6 to ON position and for 5 seconds hold
the button on the C6RX module.

EUROSTER C6RX –INSTALLATION AND OPERATION MANUAL 8
9.3. Pairing the C6RX module with another C6RX module.
Determine which C6RX module is intended to be the primary (MASTER) and which modules are to be
secondary.
Pairing procedure:
•In the primary module set the no. 4 MASTER switch to the ON position. The switched-on MASTER
function is signaled by the lit RX status (M) light.
In the secondary modules, the MASTER switch must be switched down –the RX status (M) light is
not lit.
•Press the SWITCH button on the primary MASTER module 3 times –the green and orange lights
start flashing alternately
•Then press the SWITCH button on the secondary module 3 times –the green and orange lights
start flashing alternately
•Green lights in the modules lighting up for a moment notify that the pairing was successfully
completed. No. 4 MASTER switch rests in the ON position.
Caution! Pairing mode is available only for 1 hour after connecting the module to power!
9.4. Pairing C6RX module with RXC6 receiver
If no cable is led between the distributor (module installation location) and the boiler, an RXC6 receiver
may be used. The receiver is used to provide wireless control of the heating boiler. The RXC6 receiver
should be paired to the primary (MASTER) module only.
Pairing procedure:
•Set MASTER switch to ON position. RX STATUS (M) light is lit in the module with MASTER mode on.
•Press the SWITCH button on the primary MASTER module 3 times –the green and orange lights
start flashing alternately
•Press the button on the front cover of the RXC6 receiver 3 times –the blue light lights up.
•Green lights in the module and receiver lighting up for a moment notifies that the pairing was
successfully completed.
Caution! Pairing mode is only available for 10 minutes after inserting the receiver into the
power socket.
9.5. Heating / Cooling
The mode may only be switched over in the C6RX module by shorting the Heat/cool input. The
notification of heating/cooling mode will be sent to the thermostats connected with the C6RX module.
In the cooling mode the power light flashes.
10. MODULE OPERATION
10.1. Connection test
Upon energizing the device red and yellow lights are switched on. Green lights are switched on only for
the programmed channels that correctly communicate with the C6RX module. Then, the C6RX module
waits for the correct radio connection with individual thermostats to be confirmed. The response to the
thermostat sending the switch on or switch off signal is opening or closing the adequate actuator.
The pump is switched on when at least one actuator is open.
After the lapse of an hour upon connecting the power the Anti-stop function is switched on and switches
subsequently all actuators and the pump.
The module enables you to check each output manually. To do so, follow the steps below:
•Press and hold the button for 5 seconds until the light for channel 1 starts flashing
•Press the button to switch the output on and off and then change to the subsequent channel

EUROSTER C6RX –INSTALLATION AND OPERATION MANUAL 9
(Active output –the light is continuous).
10.2. Energy saving
The C6RX module was designed to have the lowest possible energy consumption. Therefore, after the
lapse of a certain period, the signaling diodes fade. Their full brightness is restored upon pressing a
button or entering the programming mode.
10.3. Protection against losing connection with the thermostat
Discharged batteries, radio interference or excessive distance between the thermostat and the C6RX
module antenna may cause the loss of connection with the thermostat.
If the module stops receiving signals from a given thermostat, then after the lapse of 7 minutes it
switches the actuator on for 20 minutes and repeats this cycle every 2 hours. It prevents excessive
cooling of the rooms.
No radio communication in a given channel is signaled with the green light flashing fast.
11. TROUBLESHOOTING
One or several green lights flashing fast
No communication with the thermostats. Incorrectly located antenna, thermostats located too far or
having nearly discharged batteries. It is recommended to have the batteries replaced before each heating
season, do not use rechargeable batteries.
No light is on
No power supply, damaged fuse.
Problem with assigning a thermostat
Check the position of the thermostat programming/pairing switch.
Reverse operation of the device
If the device operates with the reverse effect, the device mode (heating/cooling) must be changed over.
12. SIMPLIFIED DECLARATION OF EU CONFORMITY
P.H.P.U. AS AGNIESZKA SZYMAŃSKA-KACZYŃSKA hereby represents that the type of Euroster C6RX
equipment conforms to the following directives: (RoHS). The complete text of the Declaration of EU
conformity is available at the following Internet address: www.euroster.pl
13. TECHNICAL DATA
a) Module supply voltage: 230 V 50 Hz
b) CH pump control voltage: 230 V 50 Hz
c) Maximum power consumption: 3 W
Type of supported actuators: electrothermal, normally closed (NC)
d) Actuator supply voltage: 230 V 50 Hz
e) Maximum load (total): 3 A 230 V 50 Hz,
f) Frequency of operation: 868 MHz
g) Mounting method: Wall–mounted –screw anchors or DIN 35 mm rail.
h) Operation temperature: +5°C...+40°C
i) Dimensions (width/height/depth) in mm: 270x97x50,
14. KIT CONTENTS
a) EUROSTER C6RX floor heating module with 1.5 meter-long power cable
b) Screw anchors
c) User Manual with Warranty Certificate
d) Antenna.

EUROSTER C6RX –INSTALLATION AND OPERATION MANUAL 10
ELECTRONIC WASTE MANAGEMENT INFORMATION
This product is designed with and manufactured from high-quality materials and
components suitable for reuse. If the equipment, packaging, user manual, etc. is
provided with a crossed-out wheelie bin symbol, it means that the product should be
selectively collected in accordance with the Directive 2012/19/EU of the European
Parliament and of the Council. Such marking informs that the electrical and electronic
equipment may not be disposed of together with other household waste after their
service life. The user is obliged to take the used devices to a point of collection of waste
electrical and electronic equipment. The entities collecting such equipment, including the collection
points, shops, and municipal entities, set up an appropriate system enabling the handover of such
equipment. The proper disposal of waste equipment contributes to the prevention of dangerous
consequences to nature and human health, resulting from the possible presence of hazardous
components in the equipment and from inaccurate storage and processing of such equipment. The
selective collection contributes to the recovery of materials and components used for manufacturing the
equipment. A household plays an important role in contributing to reuse and recovery including recycling,
of waste equipment. The attitudes influencing the protection of the common good of a clean environment
are shaped at this level. Households are also one of the larger users of small equipment and its rational
management at this stage impacts the recovery of recyclables. Inaccurate disposal of this product may
be penalized in accordance with national legislation.
MAINTENANCE
Before each and every heating season, the control module must be cleaned of any dust and other dirt,
the cables must be checked for their technical condition and tight fixing.
Do not use solvents and aggressive detergents to clean the device, since they may damage the surface of
the housing. If necessary, wipe it carefully with a soft cloth.

EUROSTER C6RX –INSTALLATION AND OPERATION MANUAL 11
WARRANTY CERTIFICATE
WIRELESS EUROSTER C6RX CONTROL MODULE
Warranty terms:
1. The warranty is valid for 24 months from the device sale date.
2. The claimed module together with this warranty certificate must be supplied to the seller.
3. Warranty claims shall be processed within 14 business days from the date the guarantor has
received the claimed device.
4. The device may be repaired exclusively by the guarantor, manufacturer or by other party clearly
authorized by the manufacturer.
5. Warranty becomes void in case of any mechanical damage, incorrect operation and repairs made
by unauthorized persons.
6. This consumer warranty does not exclude, restrict nor suspend any right of the buyer if the
product does not meet any of the sale contract terms.
……..........................................................................................................................................
Sale date
Serial number / date of
manufacture
stamp and signature
service: telephone No.
(65) 57-12-012
Business entity that issued this warranty certificate (the guarantor) is:
P.H.P.U. AS Agnieszka Szymańska-Kaczyńska, Chumiętki 4, 63-840 Krobia, Poland