Tech Controllers EU-T-5z WiFi User manual

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EU-T-5z WiFi

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TABLE OF CONTENTS
I. Safety ............................................................................................................................................................................4
II. Device description ........................................................................................................................................................ 5
III. Operating principle................................................................................................................................................... 5
IV. Installing the Controller............................................................................................................................................ 6
V. First start-up ................................................................................................................................................................. 8
1. Setting up the Internet connection .......................................................................................................................... 8
2. EU-C-8ZR external sensor configuration ..................................................................................................................8
3. Configuration of temperature sensors, room controllers........................................................................................9
4. Configuration of STT-868/STT-869/EU-G-X wireless thermostatic actuators .......................................................... 9
5. Window opening sensor setup............................................................................................................................... 10
VI. Main screen description ........................................................................................................................................ 10
VII. Controller functions................................................................................................................................................ 12
1. Controller menu block diagram.............................................................................................................................. 12
2. Zone........................................................................................................................................................................ 13
2.1. Registration.................................................................................................................................................... 13
2.2. ON.................................................................................................................................................................. 13
2.3. Temperature settings .................................................................................................................................... 13
2.4. Pre-set temperature ...................................................................................................................................... 13
2.5. Operating mode.............................................................................................................................................13
2.6. Hysteresis....................................................................................................................................................... 13
2.7. Calibration ..................................................................................................................................................... 13
2.8. Actuators ....................................................................................................................................................... 13
2.9. Window sensors ............................................................................................................................................ 15
3. Operating mode ..................................................................................................................................................... 15
3.1. Normal mode................................................................................................................................................. 15
3.2. Holiday mode................................................................................................................................................. 15
3.3. Economical mode ..........................................................................................................................................15
3.4. Comfort mode ............................................................................................................................................... 15
4. External sensor.......................................................................................................................................................15
5. VOLTage-FREE contact ........................................................................................................................................... 16
5.1. Zone...............................................................................................................................................................16
5.2. Activation delay ............................................................................................................................................. 16
5.3. Additional contact ......................................................................................................................................... 16
6. LED..........................................................................................................................................................................16
7. Fitter's menu ......................................................................................................................................................... 17
7.1. Internet module.............................................................................................................................................17
7.2. Protections.....................................................................................................................................................18

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7.3. Time settings.................................................................................................................................................. 18
7.4. Screen settings............................................................................................................................................... 18
7.5. Language selection ........................................................................................................................................ 18
7.6. Service menu ................................................................................................................................................. 18
7.7. USB ................................................................................................................................................................19
7.8. Factory settings ............................................................................................................................................. 19
8. Software version .................................................................................................................................................... 19
VIII. Checking the installation via the website............................................................................................................... 19
1. HOME tab ............................................................................................................................................................... 20
2. Zones Tab ............................................................................................................................................................... 23
3. Statistics Tab........................................................................................................................................................... 23
4. Settings tab............................................................................................................................................................. 24
IX. Software update..................................................................................................................................................... 25
X. Technical data.............................................................................................................................................................. 25
XI. Protections and alarms........................................................................................................................................... 25
JG. 14.10.2023

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I. SAFETY
Before operating the device, please read the following instructions carefully. Failure to observe the instructions may
bring about personal injuries and damage the device. To avoid unnecessary errors and accidents, make sure that all
persons operating the device have thoroughly familiarized themselves with the device operation and its safety
functions. Please safeguard the manual and make sure that it remains with the device when it is transferred. As far as
safety of human life, health, and property is concerned, please observe the precautions listed in operating manual, as
the manufacturer will not be liable for any damages caused by negligence.
WARNING
•Live electric equipment. Before carrying out any operations related to the power supply (connecting cables,
installing the device, etc.), make sure that the device is not connected to the mains.
•Installation should be carried out by a person holding appropriate electrical qualifications.
•The device is not intended for use by children.
NOTE
•Installation should be carried out by a person holding appropriate electrical qualifications.
•The controller may not be used contrary to its intended purpose.
•Before and during the heating season, check the technical condition of the cables. Check also the installation of
the controller, remove dust and other soiling.
There could be changes introduced in the products listed in the present manual, after its last revision of 14.03.2023. The
manufacturer reserves the right to introduce changes in design or deviations from the established colours. Illustrations
may contain optional equipment. Printing technology may affect differences in the presented colours.
Care for the natural environment is of paramount importance to us. The awareness that we
manufacture electronic devices is linked with our obligation to dispose the used electronic
parts and devices in a way that is safe for the environment. Therefore, the company has
sought and received a registration number issued by the Polish Chief Inspector for
Environmental Protection. The symbol of the crossed wheeled bin on the product indicates
that the product must not be disposed of with municipal waste. By segregating waste for
recycling, we help protect the environment. It is the user's responsibility to hand over used
equipment to a designated collection point for recycling electrical and electronic equipment
waste.

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II. DEVICE DESCRIPTION
The EU-T-5z WiFi is an Internet and wireless controller for operating the STT-868/STT-869/EU-G-X electric actuators (up
to 6 pcs per zone). The controller is designed to maintain a constant temperature in the room with use of the actuators.
The controller also has a built-in contact for the operation (switching on/off) of the additional device (e.g. gas boiler).
Controller functions:
•Controlling all parameters using the https://emodul.eu web application
•Providing the possibility to connect wireless sensors: EU-C-8r, EU-C-mini or room controller: EU-R-8b, EU-R-
8bw, EU-R-8z.
•Enabling relay output (e.g. to control the heating device, which is switched on according to the need to heat
the room)
•Providing possible connection of the following to the zone:
•- up to 6 pcs of STT-868/STT-869/EU-G-X wireless electric actuators
•- up to 6 pcs of wireless EU-C-2n window sensors
•Software updates via USB port
•Providing the possibility to assign individual operating modes (constant temperature, with time limit or 6
different operating schedules) to individual zones
•Supporting the EU-C-8zr wireless external sensor
•Supporting the EU-RP-4 wireless signal amplifier
•Providing the possibility of connecting the EU-MW-1 executive module.
Controller equipment:
•Glass touch panel
•Built-in Internet module
•EU-C-mini wireless temperature sensor.
It is possible to manage the system using the https://emodul.eu web application. The eModul application is available for
download from the Google Play store and the Apple Store.
III. OPERATING PRINCIPLE
Based on the current temperature communicated by the temperature sensor or room controller and the individual
operating algorithm, the EU-T-5z WiFi controller determines the need to heat the zone. After receiving such
information, the controller switches on the voltage-free contact (or sends a signal via EU-MW-1), which can be used, for
example, to operate a heating device and opens the actuators registered in the zone. The signal from the zone is
transmitted to the EU-T-5z WiFi controller via a sensor or room controller. It communicates with the controller via RF
frequency. In the zone, STT-868/STT-869/EU-G-X wireless valve actuators can be used, which require a registration
process.

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IV. INSTALLING THE CONTROLLER
The controller should be only installed by a properly qualified person.
WARNING
Danger of injury or death due to electric shock on live connections. Before working on the controller,
disconnect its power supply and secure it against accidental switching on.
To connect the wires, remove the back cover of the controller.
The next step is to connect the wiring –this should be done as described on the connectors and the diagrams below.
Connect in sequence:
- 230V power supply cable to the controller connector
- additional device (e.g. heating device).

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Heating
device

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Connection to the EU-MW-1 module:
V. FIRST START-UP
In order for the controller to operate correctly, the following steps must be followed for the first start-up:
1. Setting up the Internet connection
2. External sensor configuration (optional)
3. Configuration of the temperature sensor or room controller
4. Configuration of STT-868/STT-869/EU-G-X wireless thermostatic actuators
5. Window opening sensor setup.
1. SETTING UP THE INTERNET CONNECTION
The EU-T-5z WiFi has a built-in Internet module, which allows you to control the installation via the Internet. First of all,
you need to connect to the Internet –using the <WiFi network selection> option in the controller menu to connect to
the selected WiFi network. The parameters of the Internet module such as: IP address, IP mask, Gateway address –can
be set manually or the DHCP option can be enabled (option enabled by default).
You must then register your account at https://emodul.eu/. After enabling the <Registration> option in the driver menu,
a code will be generated, which should be entered on the https://emodul.eu/ website in the <Settings> (Register
module) tab.
2. EU-C-8ZR EXTERNAL SENSOR CONFIGURATION
The external sensor must be registered. To do this, select the <Registration> icon in the EU-T-5z WiFi controller (Main
Menu > External Sensor > Registration), and then press the communication button (one short press) on the external
sensor. The registration will automatically activate the external sensor. After registering, you may disconnect it at any
moment by checking the <OFF> option.
Heating
device
Channel change
button
LED

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NOTE
Turning off the sensor in the controller menu will only interrupt the communication (the external temperature
will not be visible on the controller screen), but will not turn off the external temperature sensor –the sensor
will continue to operate until the battery is exhausted.
3. CONFIGURATION OF TEMPERATURE SENSORS, ROOM CONTROLLERS
In order for the EU-T-5z WiFi controller to operate the zone, it must receive information about its current temperature.
The easiest way is to use a wireless temperature sensor, e.g. EU-C-8r or EU-C-mini. However, if we want to be able to
change the temperature set point directly from the zone, we can use a wireless room controller, e.g. EU-R-8b, EU-R-
8bw, EU-R-8z. Regardless of which temperature sensor/room controller we use, it should be registered in the zone in
the menu of the EU-T-5z WiFi controller.
To do this, we use the parameter Registration in the submenu of the zone
(Zone/Registration) - after pressing the Registration icon, press the communication
button on the selected sensor/room controller located on the rear wall of the
sensor/room controller (in the case of EU-C-8r, EU-R-8b, EU-R-8bw, EU-R-8z - one
short press). After the registration process has been carried out correctly, a
corresponding message will appear on the EU-T-5z WiFi display. If the registration
process has failed, repeat the procedure.
Please note the following rules:
- A maximum of one temperature sensor can be registered in a zone.
- The registered sensor cannot be de-registered but can only be deactivated by checking the Off option in the submenu
of the zone.
- Trying to register the sensor in a zone where another sensor is already registered will deregister the first one, and
register the second.
You can set a pre-set temperature and a weekly schedule for the room sensor assigned to a zone. The zone temperature
can be changed in the controller menu (Main Menu/Zones/Pre-set temperature). Changes to the weekly schedule
settings and set points can be made via https://emodul.eu
4. CONFIGURATION OF STT-868/STT-869/EU-G-X WIRELESS THERMOSTATIC ACTUATORS
NOTE
A maximum of 6 actuators can be registered in a zone.
Registration process:
1. Install the thermostatic actuator on the radiator and wait for it to calibrate.
2. In the EU-T-5z WiFi menu, select the zone, and then select the option Actuators/ Registration.
3. Press the registration button on the actuator. This must be done within 120 seconds of pressing the Registration
option –after this time the EU-T-5z WiFi controller will consider the registration process to be unsuccessful.
4. If the registration is carried out correctly, a message will appear on the display informing about the success of the
process. In the event of an error in the registration process, a corresponding message will appear on the display.
There are two possible causes of error:
- Attempt to register more than six actuators.
- There is no signal from the valve actuator within 120 seconds.
Communication button on
the EU-C-8r temp. sensor

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5. WINDOW OPENING SENSOR SETUP
To register the window opening sensor, select the zone in the EU-T-5z WiFi menu, then the Window
Sensors/Registration option, then briefly press the communication button on the window sensor.
After releasing the button, observe the indicator LED:
•- double blinking of the indicator LED –correct communication
•- indicator LED is on with a continuous light –no communication with the main controller.
VI. MAIN SCREEN DESCRIPTION
1. LED
2. Controller display
3. EXIT button. From the home screen position, pressing this button will bring up a submenu to select the home
screen view (Wi-Fi screen or Zone screen). After entering the controller menu, it is used to cancel the settings, or
exit the submenu.
4. PLUS button - After entering the controller menu, it is used to browse functions, or increase the setting values.
5. MINUS button - When entering the controller menu, it is used to browse functions, or decrease the setting values.
6. MENU button. Entering the controller menu, confirming the settings.
NOTE
The controller has a motion detection function. When motion is detected at a distance of approximately 2 cm
from the touch buttons, the controller display will illuminate.
1
2
3
4
5
6

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➢MAIN SCREEN DESCRIPTION - ZONE 1 SCREEN
1. WiFi signal range
2. Current date
3. Current time
4. Pre-set temperature in the given zone
5. Duration of the pre-set temperature (time overlay)
6. Additional device icon –If visible, this means that the device is switched on
7. Current room temperature.
➢MAIN SCREEN DESCRIPTION –WIFI SCREEN VIEW
1. Day of the week
2. Current date
3. Current time
4. Signal strength
5. Name of the selected WiFi network.
1
2
3
4
5
6
7
1
2
3
4
5

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VII. CONTROLLER FUNCTIONS
1. CONTROLLER MENU BLOCK DIAGRAM
Menu
Zone
Registration
ON
Temperature settings
Pre-set temperature
Operating mode
Hysteresis
Calibration
Actuators
Window sensors
Operating mode
Normal mode
Holiday mode
Economical mode
Comfort mode
External sensor
Registration
ON
Signal
Battery
Calibration
Voltage-free contact
Zone
Activation delay
Additional contact
LED
OFF
Alarms
Voltage-free contact
Heating
Fitter's menu
Software version

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2. ZONE
This submenu allows you to set the operating parameters of the zone.
2.1. REGISTRATION
After switching on the room sensor and registering it in the zone, it will be used by the EU-T-5z WiFi controller.
2.2. ON
After switching on the room sensor, it will be used by the EU-T-5z WiFi controller. However, you can disable this sensor
by unchecking the ON option.
2.3. TEMPERATURE SETTINGS
The function allows you to set the temperature for: holiday, economical and comfort modes, which will be valid after
switching on a given mode in Menu > Operating modes.
2.4. PRE-SET TEMPERATURE
The pre-set temperature in the zone depends on the settings of the selected weekly schedule. However, the Pre-set
Temperature function allows you to set a separate setpoint - you will then need to turn off the schedule. It is possible to
set the temperature permanently or for a certain period of time.
2.5. OPERATING MODE
•Local schedule –weekly schedule assigned to the zone.
•Global Schedule 1-5 –the ability to set several schedules in the zone.
•Constant temperature –the function allows you to set a separate setpoint, which will be valid in the zone
regardless of the time of day
•With time limit –the function allows you to set a separate temperature, which will be valid only for a specific
period of time. After this time, the temperature will result from the previously applicable mode (schedule or
constant temperature).
The above modes can be edited freely.
2.6. HYSTERESIS
The hysteresis introduces a tolerance for the pre-set temperature to prevent undesirable oscillations with minimum
temperature variations (in the range of 0.1 ÷ 10⁰C) with a step of 0.1°C.
Example: when the setpoint temperature is 23°C and the hysteresis is set to 0.5°C, the zone will be assigned an
underheat status only after the room temperature drops to 22.5°C.
2.7. CALIBRATION
The room sensor shall be calibrated during installation or after prolonged use of the controller if the displayed
temperature of the zone deviates from the actual temperature. Adjustment range: -10 to +10°C with a step of 0.1°C.
2.8. ACTUATORS
The Actuators submenu is used to program the operation of the STT-868/STT-869/EU-G-X thermostatic actuators. We
can register up to 6 STT-868/STT-869/EU-G-X actuators in a zone. The registration process is described in detail in the
First start-up section or in the actuator manual. If you want to deregister all actuators from the zone, just select the
option Delete actuators.

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Since the version 1.1.0 of the actuator software, it is possible to separately identify, check the status or delete the
actuators. To do this, hold the button on the actuator for approx. 2 seconds, then the information screen will appear on
the EU-T-5z WiFi screen.
Information –this option is only available when the actuator is registered. With this option, the user can view all
actuators –range information, actuator battery status, percentage of opening.
In the Settings submenu, we have the possibility to program the operation of thermostatic actuators. In this menu, we
can declare the value of the maximum and minimum opening of the actuator - the degree of opening and closing of
the valve will never exceed these values.
The SIGMA function enables smooth control of the thermostatic valve head. After activating this option, we also have
the option to set the minimum and maximum valve closure.
In addition, the Range parameter allows you to determine at what room temperature the valve will initiate to close or
open.
Example:
Zone pre-set temperature: 23˚C
Minimum opening: 30%
Maximum opening: 90%
Range: 5˚C
Hysteresis: 2˚C
With the above settings, the thermostatic valve will start to close if the temperature in the zone reaches 18˚C (setpoint
reduced by the range value: 23-5). The minimum opening will occur when the zone temperature reaches the set point.
Once the set point is reached, the temperature in the zone will start to drop. When it reaches 21˚C (set point minus
hysteresis: 23-2), the valve will start to open, reaching the maximum opening when the temperature in the zone
reaches 18˚C.
Protection - If the pre-set temperature is exceeded by the number of degrees in the <Range> parameter, all actuators in
the given zone will be closed (0% open). This function only works with the SIGMA function enabled.
Emergency mode –The function allows you to set the opening of the actuators, which will occur when an alarm occurs
in a given zone (sensor failure, communication error). The emergency mode of the thermostatic actuators is activated in
the absence of power supply to the EU-T-5z controller.
Actuator
opening
[%]
RANGE HYSTERESIS PRE-SET temperature
(a) –minimum opening
(b) –Actuator opening
PRESET –pre-set temperature

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2.9. WINDOW SENSORS
•Registration –To register a sensor, select the "Registration" option, and then briefly press the communication
button on the window sensor. After releasing the button, observe the indicator LED:
- double blinking of the indicator light –correct communication
- indicator light is on with a continuous light –no communication with the main controller.
•Sensor removal –with this function, the user has the option to delete the sensors in the zone.
•Information –this option is only available when the sensor is registered. With this option, the user can view
information about sensor range and battery status.
•Settings –the function allows you to set the delay time. After the preset delay time, the main controller sends
information to the actuators about the need to close them. Time range 0 - 30 min.
Example: The delay time is set to 10 min. Once the window is opened, the sensor sends information to the main
controller about opening of the window. The sensor confirms the current state of the window from time to time. If after
10 minutes the window remains open, the main controller will close the actuator and switch on the overheating of the
zone.
NOTE
If the delay time is set to 0, then the signal to the actuator to close will be transmitted immediately.
3. OPERATING MODE
3.1. NORMAL MODE
The pre-set temperature depends on the set mode of operation in the zone.
3.2. HOLIDAY MODE
The pre-set temperature depends on the setting in the "Temperature settings" function (Menu > Zones > Temperature
settings > Holiday mode).
3.3. ECONOMICAL MODE
The pre-set temperature depends on the setting in the "Temperature settings" function (Menu > Zones > Temperature
settings > Economical mode).
3.4. COMFORT MODE
The pre-set temperature depends on the setting in the "Temperature settings" function (Menu > Zones > Temperature
settings > Comfort mode).
4. EXTERNAL SENSOR
You can connect an external temperature sensor to the controller, which allows you to view the current temperature on
the main screen and in the https://emodul.eu app
After installing the external sensor, register it in the EU-T-5z WiFi controller - The registration process is described in
detail in the First start-up section.
After registering the sensor, the user can view current battery status and signal strength, and also has the option to
calibrate the sensor. The external sensor is not involved in the control process.

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5. VOLTAGE-FREE CONTACT
5.1. ZONE
When the zone is not selected, the controller ignores its status and does not switch on the contact when it requires
reheating.
5.2. ACTIVATION DELAY
The user has the option to set the delay time for switching on the contact. When the zone is underheated, the
controller will wait for a specified time before switching the contact on.
5.3. ADDITIONAL CONTACT
The user has the possibility to register an additional contact (EU-MW-1 module), which works analogously to the built-in
contact.
To register an additional contact:
- press the registration button on the module
- select the "Registration" option in the EU-T-5z WiFi controller.
6. LED
•Alarms –when an alarm occurs in the controller, the led flashes.
•Voltage-free contact –when the contact is shorted, the led flashes. When the contact is open, the diode lights
up continuously.
•Heating –when a zone requires additional heating –the led flashes. When the zone is heated up –the diode
lights up continuously.

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7. FITTER'S MENU
7.1. INTERNET MODULE
Required network settings
For the Internet module to work properly, it is necessary to connect the module to the network with a DHCP server and
an open port 2000.
After connecting the Internet module to the network, go to the module settings menu (in the master controller).
If the network does not have a DHCP server, the Internet module should be configured by its administrator by entering
appropriate parameters (DHCP, IP address, Gateway address, Subnet mask, DNS address).
1. Go to the Internet module settings menu.
2. Select "ON".
3. Check if the "DHCP" option is selected.
4. Go to "WIFI network selection"
5. Select your WIFI network and enter the password.
6. Wait for a while (approx. 1 min) and check if an IP address has been assigned. Go to the "IP address" tab and
check if the value is different from 0.0.0.0 / -.-.-.-.
Fitter's menu
Internet module
WiFi network selection
Network configuration
Registration
Protections
Time lock
Lock time
PIN code
Time settings
Automatic
Clock settings
Date settings
Screen settings
Screen View
Display contrast
Screen brightness
Screen blanking
Screen blanking time
Language selection
Service menu
USB
Factory settings

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a) If the value is still 0.0.0.0 / -.-.-.-.- , check the network settings or the Ethernet connection between the Inter-
net module and the device.
7. After the IP address has been assigned, start the module registration in order to generate a code which must be
assigned to the account in the application.
•WIFI NETWORK SELECTION
Once you enter this submenu, the controller displays the list of available networks. After selecting the network to
connect to, accept the selection by pressing the MENU button. If the network is secured, it is necessary to enter a
password –use the "+" and "-" buttons to select the next letters of the password. Once the password is typed in, press
EXIT.
•NETWORK CONFIGURATION
The standard network configuration runs automatically. However, if the user wishes to manually configure the network,
they can do so using the following sub-menu options: DHCP, IP address, Subnet mask, Gateway address, DNS address,
and MAC address.
•REGISTRATION
By running the Registration option, we generate the code required to register the EU-T-5z WiFi at https://emodul.eu -
please refer to the First start-up section.
7.2. PROTECTIONS
This function is used to change the settings of the parental lock. When the “Time Lock” function is activated, the screen
will lock after the time set in the “Lock Time” option. The user can set their access PIN to the controller menu.
NOTE
The factory default PIN is '0000'.
7.3. TIME SETTINGS
The current time and date are automatically downloaded from the network. The user can set the date and time
manually.
7.4. SCREEN SETTINGS
The parameters of this submenu allow you to adjust the appearance of the main screen of the controller to individual
needs. The user can change the data displayed on the controller screen: Wi-Fi (the screen displays the name of the
connected network and signal strength) or Zone (current and set values in the zone).
You can also adjust the contrast and brightness of the display. Thanks to the Screen blanking function, it is possible to
set the screen brightness during fading. The Screen blanking time option allows you to set the idle time, after which the
controller will go into the screen blanking state.
7.5. LANGUAGE SELECTION
The function allows you to change the controller language version.
7.6. SERVICE MENU
The parameters of this submenu are intended for people with appropriate qualifications and are protected by a code.

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7.7. USB
•Save –saves device addresses, zone data and schedules
•Load –loads previously saved parameters from the connected flash drive.
7.8. FACTORY SETTINGS
The function allows you to restore the factory settings –it applies to the parameters located directly in the main menu
of the controller (but does not apply to the service menu).
NOTE
After selecting this function, it will be necessary to configure the Internet connection again. The function
deletes all registered devices.
8. SOFTWARE VERSION
The function allows you to preview the current software version of the controller.
VIII.CHECKING THE INSTALLATION VIA THE WEBSITE
The https://emodul.eu website enables controlling of numerous aspects of the operation of the installation. To take full
advantage of it, you need to first setup an individual account:
New account registration panel at https://emodul.eu
After logging in to your account in the Settings tab, activate the Register module option, and then enter the code
generated by the controller (the code is generated by selecting the Registration option in the EU-T-5z WiFi controller
menu).

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You can assign any name to the module (under Module description):
New module registration panel
1. HOME TAB
The Home tab displays the home page with tiles showing the current status of individual devices in the installation. By
clicking on them, we can change the operating settings:
HOME tab view
NOTE
The message "No communication" means interruption of communication with the temperature sensor in the
zone. The most common cause of this condition is a depleted battery –it should be replaced.