TECH EU-L-8E User manual

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EU-L-8e

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TABLE OF CONTENTS
I. Safety ...............................................................................................................................................................................4
II. Device description ...........................................................................................................................................................5
III. How to install the controller ...........................................................................................................................................5
IV. First start-up ....................................................................................................................................................................6
V. Wireless communication...............................................................................................................................................12
VI. Main screen view and description ................................................................................................................................14
Sensors screen ..................................................................................................................................................................17
VII. Controller functions.......................................................................................................................................................18
1. Block diagram –controller menu .................................................................................................................................18
2. Operation mode ...........................................................................................................................................................19
3. Zones ............................................................................................................................................................................19
4. External sensor.............................................................................................................................................................19
5. Manual mode ...............................................................................................................................................................19
6. Time settings ................................................................................................................................................................19
7. Screen settings .............................................................................................................................................................19
8. Language ......................................................................................................................................................................20
9. Fitter’s menu ................................................................................................................................................................20
10.Service menu............................................................................................................................................................20
11. Software version ......................................................................................................................................................20
VIII. Zones..............................................................................................................................................................................21
1. Block diagram –zones menu........................................................................................................................................21
2. ON.................................................................................................................................................................................22
3. Type of sensor ..............................................................................................................................................................22
4. Pre-set temperature.....................................................................................................................................................22
5. Schedule .......................................................................................................................................................................22
6. User settings.................................................................................................................................................................22
7. Floor heating ................................................................................................................................................................23
7.1. Registration..........................................................................................................................................................23
7.2. Operation mode ..................................................................................................................................................23
8. Hysteresis .....................................................................................................................................................................23
9. Calibration ....................................................................................................................................................................23
10. Actuators..................................................................................................................................................................23
10.1. Registration..........................................................................................................................................................23
10.2. Valve actuators ....................................................................................................................................................23
10.3. Settings ................................................................................................................................................................23
11. Window sensors.......................................................................................................................................................24

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11.1. Registration..........................................................................................................................................................24
11.2. Sensor removal ....................................................................................................................................................25
11.3. Settings ................................................................................................................................................................25
IX.Menu..............................................................................................................................................................................25
1. Block diagram –fitter’s menu ......................................................................................................................................25
2. Internet module ...........................................................................................................................................................25
3. Operation delay............................................................................................................................................................26
3.1. Voltage-free contact ............................................................................................................................................26
3.2. Pump....................................................................................................................................................................26
4. Additional contacts.......................................................................................................................................................26
5. Heating - cooling...........................................................................................................................................................26
6. Valve registration .........................................................................................................................................................26
6.1. ON/OFF ................................................................................................................................................................27
6.2. Pre-set valve temperature...................................................................................................................................27
6.3. Calibration ...........................................................................................................................................................27
6.4. Single stroke ........................................................................................................................................................27
6.5. Minimum opening ...............................................................................................................................................27
6.6. Opening time .......................................................................................................................................................27
6.7. Measurment pause..............................................................................................................................................27
6.8. Valve type ............................................................................................................................................................27
6.9. Weather-based control........................................................................................................................................27
6.10. Proportionality coefficient...................................................................................................................................28
6.11. mAximum floor temperature ..............................................................................................................................28
6.12. Return protection ................................................................................................................................................28
6.13. Valve removal ......................................................................................................................................................28
6.14. Factory settings....................................................................................................................................................28
7. Factory serrings ............................................................................................................................................................28
X. Own schedule settings...................................................................................................................................................29
XI. Unregister a single actuator ..........................................................................................................................................30
XII. Protections and alarms..................................................................................................................................................31
XIII. Software update ............................................................................................................................................................33
XIV. Technical data................................................................................................................................................................33
KN.18.09.18

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I. SAFETY
Before using the device for the first time the user should read the following regulations carefully. Not obeying the rules
included in this manual may lead to personal injuries or controller damage. The user’s manual should be stored in a safe place
for further reference. In order to avoid accidents and errors it should be ensured that every person using the device has
familiarized themselves with the principle of operation as well as security functions of the controller. If the device is to be
sold or put in a different place, make sure that the user’s manual is there with the device so that any potential user has access
to essential information about the device.
The manufacturer does not accept responsibility for any injuries or damage resulting from negligence; therefore, users are
obliged to take the necessary safety measures listed in this manual to protect their lives and property.
WARNING
High voltage! Make sure the regulator is disconnected from the mains before performing any activities involving
the power supply (plugging cables, installing the device etc.).
The device should be installed by a qualified electrician.
Before starting the controller, the user shoud measure earthing resistance of the electric motors as well as the
insulation resistance of the cables.
The regulator should not be operated by children.
NOTE
The device may be damaged if struck by a lightning. Make sure the plug is disconnected from the power supply
during storm.
Any use other than specified by the manufacturer is forbidden.
Before and during the heating season, the controller should be checked for condition of its cables. The user should
also check if the controller is properly mounted and clean it if dusty or dirty.
Changes in the merchandise described in the manual may have been introduced subsequent to its completion on September
18th 2018. The manufacturer retains the right to introduce changes to the structure. The illustrations may include additional
equipment. Print technology may result in differences in colours shown.
We are committed to protecting the environment. Manufacturing electronic devices imposes an
obligation of providing for environmentally safe disposal of used electronic components and
devices. Hence, we have been entered into a register kept by the Inspection For Environmental
Protection. The crossed-out bin symbol on a product means that the product may not be
disposed of to household waste containers. Recycling of wastes helps to protect the
environment. The user is obliged to transfer their used equipment to a collection point where all
electric and electronic components will be recycled.

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II. DEVICE DESCRIPTION
EU L-8 external controller is intended for both wired and wireless control of the valves (see: Wireless communication). The
controller enables significant energy saving due to precise temperature management in particular rooms. Due to advanced
software, the controller fulfils a wide range of functions:
•possibility of controlling up to 22 thermostatic actuators via 8 room sensors C-8r, C-mini or room regulators R-8b and
R-8z (3 room sensors may support up to 12 actuators (the maximum of 4 actuators per one sensor); 5 room sensors
may support up to 10 actuators (the maximum of 2 actuators per one sensor)
•one 230V output for a pump
•voltage-free contact (e.g. for controlling the heating device)
•possibility of connecting ST-507 Internet or WiFi RS to control the system via the Internet
•possibility of connecting M-8 wireless control panel
•possibility of controlling the mixing valve (via ST-431N valve module or i-1m)
•possibility of updating the software via USB
•possibility of controlling wireless actuators STT-868 or STT-869 (6 per section)
III. HOW TO INSTALL THE CONTROLLER
L-8 controller should be installed by a qualified person. It may be installed as a free-standing device or as a panel mountable
on a wall.
WARNING
Risk of fatal electric shock from touching live connections. Before working on the controller switch off the
power supply and prevent it from being accidentally switched on.
NOTE
Incorrect connection of cables may lead to controller damage.
1. Cover (it should be removed to connect the devices to be controlled)
2. Display
3. Aerial –for wireless communication
4. Buttons
1
2
3
4

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WARNING
The controller may be installed on a DIN strip.
IV. FIRST START-UP
Follow these step while starting the device for the first time to ensure its failure-free operation:
Step 1. Connect L-8 controller with all the devices to be controlled
In order to connect the cables, remove the controller cover and connect the cables as indicated on connector labels and
diagrams below:
-All the necessary valve actuators ST-230/2 (connectors 1-8)
-Internet module (using RS cable)
-Pump
-An additional device
Pictorial diagram presenting wiring and communication with other devices in the system:

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8

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Step 2. Switch on the power supply and check if the devices work properly
Once all the devices has been connected, switch on the power supply.
Use the Manual mode function to check if each device works properly –use the buttons ▲and ▼to select the device and
press MENU button - the device should be activated. Follow the procedure to check all the devices.
Step 3. Activate the Internet module
EU L-8 external controller is compatible with ST-507 and WiFi RS.
WiFi RS uses WiFi wireless network whereas ST-507 needs to be connected to a router with RJ45 network cable.
Connection diagram for ST-507 Internet module.
Connection diagram for WiFi RS.
ST-507 Internet module or WiFi RS should be connected as illustrated in the diagrams above. Next, activate the module:
Main menu/Fitter’s menu/Internet module/ON. Further steps are described in detail in the instruction manual for the
Internet module.

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NOTE
The user should enable the Internet module to connect with data servers listening on TCP/2000 port. Most computer
networks are protected by various software (firewalls, anti-virus software etc.) which may block data exchange with
the above mentioned port. If any problems arise, contact technical support or your computer network administrator.
Step 4. Activate the external sensor
NOTE
Deactivating the sensor in the controller menu only interrupts communication (the external temperature is no longer
displayed on the controller screen) but it does not disable the external temperature sensor. The sensor remains
active until the battery gets empty.
Step 5. Set current time and date
Set current time and date in the fitter’s menu.
Step 6. Configure the settings for wireless thermostatic actuators STT-868 /STT-869
If you also use wireless actuators STT-868 or STT-869, it is necessary to register each actuator in a zone.
NOTE
The maximum of 6 actuators may be registered in each zone.
Registration process:
1. Install the thermostatic actuator on the radiator and wait until it calibrates.
2. Go to the controller menu, select the number of zone in which the actuator is to be registered and select
Registration/Register valve.
3. Press the registration button on the actuator within 120 seconds from selecting Register valve option. After this
time EU L-8 considers the registration attempt as unsuccessful.
4. If the registration process has been completed successfully, the display shows an appropriate message and
informs about the number of valves registered. In the case of any errors, the display shows appropriate
message. There are 3 possible causes of errors in the registration process:
- An attempt to register more than 6 actuators.
- An attempt to register the actuator which has already been assigned to a different zone
- No signal from the valve actuator within the period of 120 seconds.
Communication
button
The external sensor should be registered by selecting
Registration (in the controller’s menu) and pressing
communication button on the external sensor.
Completing the registration procedure activates the
sensor automatically. It may be switched off at any time
by selecting OFF option.

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Step 7. Configure the settings for the temperature sensors and the room regulators
To enable EU L-8 external controller to control a given zone, it is necessary to provide it with current temperature value.
The easiest way is to use C-8r temperature sensor. If the user wants to be able to change the pre-set temperature value
directly from the zone, it is advisable to use R-8b, R-8z room regulators.
The user may also choose M-8 room regulator which offers additional functionalities apart from sending the current
temperature readings. It serves as a master controller enabling the user to change the pre-set zone temperatures, adjust
the local and global weekly schedules etc. Only one room regulator of this type may be installed in the heating system.
Regardless of the type of temperature sensor / room regulator chosen, it must be registered in a particular zone in EU L-8
controller menu.
NOTE
In some versions of room regulators there is no communication button at the back of the device - then you should
use PLUS button in the registration procedure. Only one regulator may be assigned to one zone.
The following rules must be kept in mind:
- The maximum of one temperature sensor may be assigned to each zone.
- Once registered, the sensor cannot be unregistered, but only switched off in the submenu of a given zone
- If the user attempts to assign a sensor to the zone to which other sensor has already been assigned, the first sensor becomes
unregistered and it is replaced by the second one
- If the user attempts to assign a sensor which has already been assigned to a different zone, the sensor is unregistered from
the first zone and registered in the new one
It is possible to set individual pre-set temperature value and weekly schedule for each room sensor assigned to a given zone.
The settings may be configured both in the controller menu and via www.emodul.eu (using ST-507 module or WIFI RS).
Communication
button in C-8r
room
temperature
sensor
Room temperature sensor C-8r, C-mini, M-8 - In order to
register, go to Registration in the submenu of a given zone
(Zones / Zone 1-8 / Room sensor / Registration) and press the
communication button on the sensor to register the sensor in
the controller.
If the process has been completed successfully, EU L-8
external controller display and the room regulator display will
show an appropriate message. Otherwise, the process must
be conducted again.

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V. WIRELESS COMMUNICATION
EU L-8 external controller may communicate with certain devices using radio signal:
Device
Function
How to configure
C-8-r –room temperature
sensor
Sending current room
temperature data
The sensor should be
registered in the external
controller
C- mini - room temperature
sensor
Sending current room
temperature data
The sensor should be
registered in the external
controller
R-8b -
two-state room regulator;
power supply: 2xAAA
1,5V
- Sending current zone
temperature data
- Adjusting pre-set temperature
directly from the zone
The room regulator should be
registered in the external
controller
R-8z -
two-state room regulator;
power supply: 230V
50Hz
- Sending current zone
temperature data
- Adjusting pre-set temperature
directly from the zone
The room regulator should be
registered in the external
controller
M-8 - master room regulator
(control panel)
- Sending current zone
temperature data
- Adjusting pre-set temperature
and schedule settings directly
from the zone
- Adjusting settings for different
zones
The room regulator should be
registered in the external
controller
C-8zr - external temperature
sensor
- Monitoring external
temperature value
The sensor should be
registered in the external
controller
STT-868 - wireless
thermostatic actuator
- Opening/closing the valve in
order to maintain desired
temperature value
The actuator should be
registered in the external
controller

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STT-869 –wireless
thermostatic actuator
- Opening/closing the valve in
order to maintain desired
temperature value
The actuator should be
registered in the external
controller
C-2 –window sensor
- It sends information to the
main controller when the
window is opened/closed.
The sensor should be installed
in the window of a given zone
and it should registered to a
the zone.
C-8f –floor sensor
- It sends information about
current floor temperature.
The sensor should be
registered in a given zone.
MW-1 –executive module
- It enables wireless activation of
a given output in the external
controller. Depending on
selected operation mode, MW-1
may be used to activate CH
boiler operation, the pump or
valve actuators.
The module should be
registered i the fitter’s menu.

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VI. MAIN SCREEN VIEW AND DESCRIPTION
The user navigates in the menu structure using the buttons located next to the display.
1. Display.
2. ▲ - „up” „plus” - it is used to view the menu options and increase the value while editing parameters. During
standard operation the button is used to switch between different zones parameters.
3. ▼- „down” „minus” - it is used to view the menu options and decrease the value while editing parameters.
During standard operation the button is used to switch between different zones parameters.
4. MENU button –it is used to enter the controller menu and confirm the new settings.
5. EXIT button –it is used to exit the menu and cancel the settings.
2
3
4
5
1

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ZONE SCREEN
1. Current day of the week
2. Pump ON
3. Voltage-free contact ON
4. Current time
5. Current weekly schedule
6. C-8r battery level in a given zone (backlit numer in the zone bar –see: description np.12)
7. C-8r sensor signal strength in a given zone (backlit numer in the zone bar –see: description no.12)
8. Pre-set temperature in a given zone (blacklit numer in the zone bar –description no.12)
9. Current temperature of C-8f floor sensor in a given zone (blacklit numer in the zone bar –see: description no.12)
10. Current temperature of C-8r room sensor in a given zone (blacklit numer in the zone bar –see: description no.12)
11. Zone information:
The digit displayed indicates that the corresponding room sensor is connected and sends current temperature
information. If the zone temperature is too low, the digit flashes. In the event of a zone alarm, an exclamation
marki s displayed instead of the digit .
In order to view the operation parameters of a given zone, select its numer using ▲or ▼
1
4
5
6
8
9
10
11
7
2
3

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ZONE SCREEN
1. C-8r sensor signals strength in a given zone
2. Pump ON
3. Voltage-free contact ON
4. Pre-set temperature in a given zone
5. C-8r sensor battery level in a given zone
6. Current time
7. Current weekly schedule
8. Current room temperature in a given zone
9. Current floor temperature in a given zone
10. Maximum and minimum floor temperature
11. The numer of registered window sensors (C-2) in a given zone
12. The numer of registered thermostatic actuators (STT-868 or STT-869) in a given zone
13. External temperature
14. Zone name
1
6
2
3
4
5
7
8
9
10
11
12
13
14

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SENSORS SCREEN
1. Current day of the week
2. External temperature
3. Pump ON
4. Voltage-free contact ON
5. Current time
6. Current temperature in zone 3 3
7. Pre-set temperature in zone 3
8. Floor temperature in zone 4
9. Current schedule:
G1 –global schedule 1
L –local schedule
T –time left before the next change of the pre-set temperature
C –constant temperature
QA –other than standard mode has been selected in the external controller
1
2
3
4
5
6
7
8
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VII. CONTROLLER FUNCTIONS
1. BLOCK DIAGRAM –CONTROLLER MENU
Menu
Operation mode
Normal mode
Holiday mode
Economical mode
Comfort mode
Zones
External sensor
Registration
Sensor type
Manual mode
Valves 1-8
Voltage-free contact
Pump
Time settings
Automatic
Clock settings
Date settings
Screen settings
Screensaver
Button sounds
Screen view
Display contrast
Screen brightness
Screen blanking
Screen blanking time
Language selection
Fiter's menu
Service menu
Software version

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2. OPERATION MODE
This function enables the user to select the operation mode for a given zone.
Normal mode –pre-set temperature depends on the selected schedule.
Holiday mode pre-set temperature depends on Temperature settings parameters (Menu > Zones > User settings >
Temperature settings > Holiday)
Economical mode –pre-set temperature depends on Temperature settings parameters (Menu > Zones > User
settings > Temperature settings > Economical)
Comfort mode –pre-set temperature depends on Temperature settings parameters (Menu > Zones > User settings
> Temperature settings > Comfort temperature).
3. ZONES
Zones menu is described in detail in section VIII.
4. EXTERNAL SENSOR
It is possible to connect an external temperature sensor which enables the user to view the current temperature value on
the main screen. It is also used in weather-based control.
There are two types of weather sensor - wired and wireless. After the external sensor has been installed, it is necessary to
register it in the external controller. The registration process is described in detail in Installation section.
Once the sensor has been installed and connected to the valve module, it is necessary to activate <Weather-based control>
function in the controller menu. When the external sensor is active, the main screen displays external temperature and the
controller menu offers average external temperature.
Averaging time –the user sets the time period based on which the average external temperature is calculated. The
settings range is 6-24 hours.
Temperature threshold –this function protects the zone against excessive temperature. The zone in which weather-
based control has been activated will not be heated when the average daily temperature outside exceeds the pre-
set threshold value. For example, when the temperature rises in spring, the controller will prevent the zones from
being heated unnecessarily.
5. MANUAL MODE
This function enables the user to activate particular devices (pump, voltage-free contact and valve actuators) independently
of the others in order to check if they operate properly. It is advisable to check the devices using this procedure at the first
start-up.
6. TIME SETTINGS
This function enables the user to set current date and time, which will be displayed in the main screen view.
7. SCREEN SETTINGS
These parameters enable the user to adjust the main screen view to individual needs. Select <Screen view> to decide what
data will be displayed on the controller screen.
The user may also adjust the display contrast and screen brightness. <Screen blanking> function is used to adjust the blank
screen brightness. <Screen blanking time> parameter defines the time of inactivity after which the screen goes blank.

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8. LANGUAGE
This option is used to select the language version.
9. FITTER’S MENU
This menu is described in section IX.
10. SERVICE MENU
In order to activate service options, it is necessary to enter a 4-digit code provided by TECH company.
11. SOFTWARE VERSION
When this option is selected, the display shows the logo of the CH boiler manufacturer and the controller software version.