TECH CONTROLLERS EU-I-1 Weather Compensating Mixing Valve Controller User Manual

: July 25, 2024
: TECH CONTROLLERS

Table of Contents

TECH CONTROLLERS EU-I-1 Weather Compensating Mixing Valve Controller
Product Information
SAFETY
DESCRIPTION OF THE DEVICE
HOW TO INSTALL
HOW TO USE THE CONTROLLER
PROTECTIONS AND ALARMS
TECHNICAL DATA
EU DECLARATION OF CONFORMITY
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

TECH CONTROLLERS EU-I-1 Weather Compensating Mixing Valve Controller

Product Information

Specifications

Model: EU-I-1
Date of Completion: 23.02.2024
Manufacturer’s Right: Introduce changes to the structure
Additional Equipment: Illustrations may include additional equipment
Print Technology: May result in differences in colors shown

Description of the Device
The EU-I-1 is a controller device used for managing various components in a heating system.

How to Install
The controller should be installed by a qualified person to prevent any risks of electric shock or damage to the regulator. Ensure the power supply is switched off before installation.

Example Installation Scheme:

Valve
Valve pump
Valve sensor
Return sensor
Weather sensor
CH boiler sensor
Room regulator

How to Use the Controller
The controller has 4 buttons for operation:

EXIT: Used to open the screen view selection panel or exit the menu.
MINUS: Decreases pre-set valve temperature or navigates through menu options.
PLUS: Increases pre-set valve temperature or navigates through menu options.
MENU: Enters the menu and confirms settings.

CH Screen
Detailed information about the CH screen and controller operation mode is displayed here.

Frequently Asked Questions (FAQ)

Q: How do I reset the controller to factory settings?
A: To reset the controller to factory settings, navigate to the settings menu and look for the option to reset settings. Confirm the action to restore the device to its original configuration.
Q: What should I do if the controller displays an error message?
A: If the controller shows an error message, refer to the user manual for troubleshooting steps. Check connections and power supply to ensure proper functionality.

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. 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.)
A qualified electrician should install the device.
Before starting the controller, the user should measure the earthing resistance of the electric motors as well as the insulation resistance of the cables.
The regulator should not be operated by children.

WARNING

The device may be damaged if struck by lightning. Make sure the plug is disconnected from the power supply during a storm.
Any use other than specified by the manufacturer is forbidden.
Before and during the heating season, the controller should be checked for the 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 after its completion on 23.02.2024. The manufacturer retains the right to introduce changes to the structure. The illustrations may include additional equipment. Print technology may result in differences in colors shown.

We are committed to protecting the environment. Manufacturing electronic devices imposes an obligation to provide 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 waste 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.

DESCRIPTION OF THE DEVICE

EU-i-1 thermoregulator is intended for controlling a three- or four-way mixing valve with the possibility of connecting an additional valve pump. Optionally, the controller may cooperate with two valve modules EU-i-1, EU-i-1M, or ST-431N which makes it possible to control up to 3 mixing valves. The controller features weather-based control and a weekly control schedule and it may cooperate with a room regulator. Another asset of the device is return temperature protection against too-cold water returning to the CH boiler.

Functions offered by the controller:

Smooth control of a three- or four-way valve
Pump control
Controlling two additional valves via additional valve modules (e.g. ST-61v4, EU-i-1)
Possibility of connecting ST-505 ETHERNET, WiFi RS
Return temperature protection
Weekly and weather-based control
Compatible with RS and two-state room regulators

Controller equipment:

LCD display
CH boiler temperature sensor
Valve temperature sensor
Return temperature sensor
External weather sensor
Wall-mountable casing

HOW TO INSTALL

The controller should be installed by a qualified person.

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.
WARNING
Incorrect connection of wires may damage the regulator!

NOTE

Plug RS cable to RS socket labeled RS STEROWN connecting EU-i-1 valve module to the main controller (CH boiler controller or other valve module EU-I-1). Use this socket only if EU-I-1 is to operate in subordinate mode.
Connect the controlled devices to the socket labeled RS MODUŁY: e.g. Internet module, GSM module, or another valve module. Use this socket only if EU-I-1 is to operate in master mode.

Example installation scheme:

Valve
Valve pump
Valve sensor
Return sensor
Weather sensor
CH boiler sensor
Room regulator

HOW TO USE THE CONTROLLER

There are 4 buttons used to control the device.

EXIT – in the main screen view it is used to open up the screen view selection panel. In the menu, it is used to exit the menu and cancel the settings.
MINUS – in the main screen view it is used to decrease the pre-set valve temperature. In the menu, it is used to navigate through menu options and decrease the edited value.
PLUS – in the main screen view it is used to increase the pre-set valve temperature. In the menu, it is used to navigate through menu options and increase the edited value.
MENU – it is used to enter the menu and confirm the settings.

CH SCREEN

Valve status:
OFF
Operation
CH boiler protection -it is displayed on the screen when CH boiler protection is activated; i.e. when the temperature increases to the value defined in the settings.
Return protection – it is displayed on the screen when return protection is activated; i.e. when the return temperature is lower than the threshold temperature defined in the settings.
Calibration
Floor overheating
Alarm
Stop – it appears in Summer mode when the Closing below threshold function is active – when CH temperature is lower than the pre-set value or when the Room regulator function -> Closing is active – when the room temperature has been reached.
Controller operation mode
„P” is displayed in this place when a room regulator is connected to the EU-I-1 module.
Current time
From the left:
- Current valve temperature
- Pre-set valve temperature
- Level of valve opening
An icon indicating that the additional module (of valves 1 and 2) is switched on.
An icon indicating valve status or selected valve type (CH, floor or return, return protection or cooling).
Icon indicating valve pump operation
An icon indicating that summer mode is selected
An icon indicating that communication with the main controller is active

RETURN PROTECTION SCREEN

Valve status – as in the CH screen
Current time
CH sensor – current CH boiler temperature
Pump status (it changes its position during operation)
Current return temperature
Percent of valve opening
CH boiler protection temperature – maximum CH boiler temperature set in the valve menu.
Pump activation temperature or „OFF” when the pump is switched off.
Return protection temperature – the pre-set value

VALVE SCREEN

Valve status – as in the CH screen
Valve address
Pre-set valve temperature and change
Current valve temperature
Current return temperature
Current CH boiler temperature
Current external temperature
Valve type
Percent of opening
Valve pump operation mode
Valve pump status
Information about the connected room regulator or weather-based control mode
Information about active communication with a subordinate controller.

CONTROLLER FUNCTIONS – MAIN MENU
The main menu offers basic controller options.

MAIN MENU

Pre-set valve temperature
ON/OFF
Screen view
Manual mode
Fitter’s menu
Service menu
Screen settings
Language
Factory settings
Software version

Pre-set valve temperature
This option is used to set the desired temperature which the valve is to maintain. During proper operation, the temperature of water downstream of the valve approximates the pre-set valve temperature.
ON/OFF
This option enables the user to activate the mixing valve. When the valve is switched off, the pump is also inactive. The valve is always calibrated when the controller is connected to the mains even if the valve is deactivated. It prevents the valve from remaining in a position that may cause danger to the heating circuit.
Screen view
This option is used to adjust the main screen layout by choosing between the CH view, sensors temperature view, return protection view, or the view with parameters of one built-in or additional valve (only when the valves are active). When the sensor’s temperature view is selected, the screen displays the valve temperature (current value), current CH boiler temperature, current return temperature, and external temperature. In valve 1 and valve 2 view the screen displays the parameters of the selected valve: current and pre-set temperature, external temperature, return temperature, and percent of valve opening.
Manual mode
This option is used to manually open/close the valve (and additional valves if active) as well as to switch the pump on/off to check if the devices work properly.
Fitter’s menu
Functions available in the Fitter’s menu should be configured by qualified fitters and concern advanced parameters of the controller.
Service menu
Functions available in this submenu should be accessed only by service staff and qualified fitters. Access to this menu is secured with a code provided by Tech.

Screen settings

Screen settings may be customized to satisfy the user’s needs.

Contrast
This function enables the user to adjust the display contrast.
Screen blanking time
This function enables the user to set the screen blanking time (the screen brightness is reduced to the user-defined level – Blank screen brightness parameter).
Screen brightness
This function enables the user to adjust the screen brightness during standard operation e.g. while viewing the options, changing the settings etc.
Blank screen brightness
This function enables the user to adjust the brightness of the blank screen which is activated automatically after a pre-defined period of inactivity.
Energy saving
Once this option is activated, the screen brightness is automatically reduced by 20%.
Language
This option is used to choose the language version of the controller menu.
Factory settings
The controller is pre-configured for operation. However, the settings should be customized to the user’s needs. Return to factory settings is possible at any time. Once the factory settings option is activated, all customized CH boiler settings are lost and replaced with the manufacturer’s settings. Then, the valve parameters may be customized anew.
Software version
This option is used to view the software version number – the information is necessary when contacting the service staff.

CONTROLLER FUNCTION– FITTER’S MENU
Fitter’s menu options should be configured by qualified users. They concern advanced parameters of controller operation.

Summer mode
In this mode, the controller closes the CH valve in order not to heat the house unnecessarily. If the CH boiler temperature is too high (return protection must be active!) the valve is opened in emergency procedure. This mode is inactive in the case of controlling the floor valve and in Return protection mode.

Summer mode does not influence the cooling valve operation.

TECH regulator
It is possible to connect a room regulator with RS communication to the EU-I-1 controller. This option allows the user to configure the regulator by selecting the ON option.

NOTE
For the EU-I-1 controller to cooperate with the room regulator with RS communication, it is necessary to set the communication mode to the main. The appropriate option should also be selected in the Room Regulator submenu.

Valve settings
This submenu is divided into two parts corresponding to particular valves – a built-in valve and up to two additional valves. Additional valve parameters may be accessed only after the valves have been registered.

Built-in valve

for built-in valve only
for additional valves only

Registration
In the case of using additional valves, it is necessary to register the valve by entering its module number before its parameters may be configured.

If the EU-I-1 RS valve module is used, it must be registered. The registration code may be found on the rear cover or in the software version submenu (EU-I-1 valve: MENU -> Software version).
The remaining valve settings may be found in the Service menu. EU-I-1 controller should be set as subordinate and the user should choose the sensors according to individual needs.

Valve removal

NOTE
This option is available only for an additional valve (external module). This option is used to remove the valve from the controller memory. Valve removal is used e.g. at disassembling the valve or module replacement (re- registration of a new module is necessary).

Version
This option is used to check the software version used in the subordinate module.
ON/OFF
For the valve to be active, select ON. To deactivate the vale temporarily, select OFF.
Pre-set valve temperature
This option is used to set the desired temperature which the valve is to maintain. During proper operation, the temperature of water downstream of the valve approximates the pre-set valve temperature.
Calibration
This function enables the user to calibrate the built-in valve at any time. During this process the valve is restored to its safe position – in the case of the CH valve it is fully opened whereas in the case of the floor valve, it is closed.
Single stroke
This is the maximum single stroke (opening or closing) that the valve may make during one temperature sampling. If the temperature is near the pre-set value, the stroke is calculated based on the proportionality coefficient parameter value. The smaller the single stroke, the more precisely the set temperature can be achieved. However, it takes longer for the set temperature to be reached.
Minimum opening
The parameter determines the smallest valve opening. Thanks to this parameter, the valve may be opened minimally, to maintain the smallest flow.
Opening time
This parameter defines the time needed for the valve to open from 0% to 100% position. This value should be set under the specification given on the actuator rating plate.
Measurement pause
This parameter determines the frequency of water temperature measurement (control) behind the CH valve. If the sensor indicates a temperature change (deviation from the pre-set value), the electric valve will open or close by the pre-set stroke, to return to the pre-set temperature.
Valve hysteresis
This option is used to set the hysteresis of the pre-set valve temperature. It is the difference between the pre-set (desired) temperature and the temperature at which the valve will start closing or opening.

Example:

Pre-set valve temperature	50°C
Hysteresis	2°C
Valve stops at	50°C
Valve closing	52°C
Valve opening	48°C

When the pre-set temperature is 50°C and the hysteresis value is 2°C, the valve stops in one position when the temperature of 50°C is reached. When the temperature drops to 48°C, the valve starts opening.
When the temperature of 52°C is reached, the valve starts closing to reduce the temperature.

Valve type

With this option, the user chooses the type of valve to be controlled:

CH – select if you want to control the temperature of the CH circuit using the valve sensor. The valve sensor should be installed downstream of the mixing valve on the supply pipe.
FLOOR – select if you want to control the temperature of the underfloor heating circuit. It protects the underfloor heating system against dangerous temperatures. If the user selects CH as the valve type and connects it to the underfloor heating system, the fragile floor installation may be damaged.
RETURN PROTECTION – select if you want to control the return temperature using the return sensor. When this type of valve is selected, only return and CH boiler sensors are active whereas the valve sensor should not be connected to the controller. In this mode, the valve priority is to protect the CH boiler return against low temperatures. When the CH boiler protection option is selected as well, the valve also protects the CH boiler against overheating. When the valve is closed (0% opening), water flows only through the short circuit whereas when the valve is open (100% opening), the short circuit is closed and water flows through the heating system.
- WARNING
  When CH boiler protection is active, CH temperature does not influence the valve opening. In extreme cases, it may cause CH boiler overheating. Therefore, it is advisable to configure CH boiler protection settings.
COOLING – select if you want to control the cooling system temperature (the valve opens when the pre-set temperature is lower than the valve sensor temperature). In this valve type the following functions are not available: CH boiler protection, return protection. This type of valve works regardless of active summer mode and the pump operation is based on the deactivation threshold. Additionally, this type of valve has a separate heating curve for the Weather-based control function.

Opening in CH calibration
When this function has been activated, the valve calibration starts from the opening phase. This option is available only if the CH valve type has been selected.

Floor heating- summer
The function is active when selecting the valve type as floor valve Activating this function will cause the floor valve to operate in summer mode.

Weather-based control

Heating curve

Heating curve – a curve according to which the pre-set controller temperature is determined, based on external temperature. In our controller, this curve is constructed based on four pre-set temperatures (downstream of the valve) for respective values of external temperatures -20°C, -10°C, 0°C, and 10°C.
A separate heating curve applies to the Cooling mode. It is set for the following outside temperatures: 10 °C, 20° C, 30° C, 40° C.

Room regulator

This submenu is used to configure the parameters of the room regulator which is to control the valve.

The room regulator function is not available in cooling mode.

Control without room regulator
When this option is selected, the room regulator does not influence the valve operation.
TECH regulator
The valve is controlled by a room regulator with RS communication. When this function is selected, the regulator operates according to Room reg. temp. lower parameter.
TECH proportional regulator
This type of regulator allows the user to view the current temperatures of the CH boiler, water tank, and valves. It should be connected to the RS socket of the controller. When this type of room regulator is selected, the valve is controlled according to Change in the set temp. and Room temperature difference parameters.
Standard valve regulator
When this option is selected, the valve is controlled by a standard two-state regulator (without RS communication). The controller operates according to Room reg. temp. lower parameter.

Room regulator options

Room reg. temp. lower

NOTE
This parameter concerns the Standard valve regulator and TECH regulator.

The user defines the temperature value by which the pre-set valve temperature will be reduced when the pre-set room regulator temperature is reached.

Room temperature difference

NOTE
This parameter concerns the TECH proportional regulator function.

This setting is used to define a single change in the current room temperature (with the accuracy of 0.1°C) at which a predefined change in the pre-set temperature of the valve is introduced

Change in the set temp.

NOTE
This parameter concerns the TECH proportional regulator function.

This setting determines by how many degrees the valve temperature is to increase or decrease with a single unit change in room temperature (see: Room temperature difference) This function is active only with the TECH room regulator and it is closely related to the Room temperature difference parameter.

Example:

SETTINGS:

Room temperature difference| 0,5°C
Change in the set temp.| 1°C
Pre-set valve temperature| 40°C
Pre-set temperature of room regulator| 23°C

Case 1:
If the room temperature rises to 23,5ºC ( 0,5ºC above the pre-set room temperature), the valve closes until 39ºC is reached ( 1ºC change).
Case 2:
If the room temperature drops to 22ºC (1ºC below the pre-set room temperature), the valve opens until 42ºC is reached (2ºC change – because for every 0,5°C of room temperature difference, the pre-set valve temperature changes by 1°C ).
- Room regulator function

This function is used to decide if the valve should close or the temperature should decrease when the pre-set temperature has been reached.

Proportionality coefficient
The proportionality coefficient is used for defining valve stroke. The closer to the pre-set temperature, the smaller the stroke. If the coefficient value is high, the valve takes less time to open but at the same time the opening degree is less accurate. The following formula is used to calculate the percent of a single opening:

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??????????????? ???????????/10

Opening direction

If, after connecting the valve to the controller, it turns out that it is connected the other way around, then the power supply cables do not have to be switched. Instead, it is enough to change the opening direction in this parameter: LEFT or RIGHT.

Maximum floor temperature

NOTE
This option is available only when the valve type selected is the floor valve.

This function is used to define the maximum temperature of the valve sensor (if the floor valve is selected). Once this temperature is reached, the valve is closed, the pump is disabled and the main screen of the controller informs about floor overheating.

Sensor selection
This option concerns the return sensor and external sensor. It is used to choose if the additional valve operation control should be based on the readings from the sensors of the valve module or the main controller sensors.

CH sensor
This option concerns the CH sensor. It is used to choose if the additional valve operation should be based on the readings from the sensors of the valve module or the main controller sensors.

CH boiler protection

The protection against too high a return temperature serves to prevent the hazardous growth in CH boiler temperature. The user sets the maximum acceptable return temperature. In case of a hazardous growth in temperature, the valve begins to open to the house heating system to cool the CH boiler down.

CH boiler protection function is not available with the cooling valve type.

Maximum temperature
The user defines the maximum acceptable CH temperature at which the valve will open.

Return protection

This function allows setting up CH boiler protection against too-cool water returning from the main circulation, which could cause low-temperature boiler corrosion. The return protection involves closing the valve when the temperature is too low until the short circulation of the boiler reaches the appropriate temperature.

The return protection function is not available with the cooling valve type.

Minimum return temperature
The user defines the minimum acceptable return temperature at which the valve will close.

Valve pump

Pump operation modes

This option is used to select the pump operation mode.

Always-ON – the pump operates all the time, regardless of temperature.
Always OFF – the pump is permanently deactivated and the regulator controls only valve operation
ON above threshold – the pump is activated above the pre-set activation temperature. If the pump is to be activated above the threshold, the user should also define the threshold temperature of pump activation. The temperature is read from the CH sensor.
Deactivation threshold*- the pump is enabled below the pre-set deactivation temperature measured on
CH sensor. Above the pre-set value the pump is disabled.
- The deactivation threshold function is available after selecting Cooling as the valve type.

Pump switch on temperature
This option concerns the pump operating above the threshold (see: above). The valve pump is switched on when the CH boiler reaches the pump activation temperature.

Pump anti-stop
When this function is active, the valve pump is activated every 10 days for 2 minutes. It prevents stagnant water in the heating system outside the heating season.

Closing below temp. threshold
Once this function is activated (by selecting ON), the valve remains closed until the CH boiler sensor reaches the pump activation temperature.

NOTE
If EU-I-1 is used as the additional valve module, pump anti-stop and closing below temp. threshold may be configured directly from the subordinate module menu.

Valve pump room regulator
When this option is active, the room regulator disables the pump when the pre- set temperature has been reached.
Only pump
When this option is active, the regulator controls only the pump while the valve is not controlled.
Operation – 0%
Once this function has been activated, the valve pump will operate even if the valve is completely closed (valve opening = 0%).
External sensor calibration
External sensor calibration is performed while mounting or after the regulator has been used for a long time if the external temperature displayed differs from the actual temperature. Calibration range is from -10⁰C to +10⁰C.

Closing

NOTE

Function available after entering the code.
This parameter is used to decide if the valve should close or open once it has been switched off in CH mode. Select this option to close the valve. If this function is not selected, the valve will open.

Valve weekly control

This function enables the user to program daily changes of the pre-set valve temperature for a particular time and day of the week. The settings range for the temperature changes is +/-10˚C.
To activate weekly control, select mode 1 or mode 2. Detailed settings of each mode are provided in the following sections: Set mode 1 and Set mode 2. (separate settings for each day of the week) and mode 2 (separate settings for working days and the weekend).
NOTE For this function to work properly, it is necessary to set the current date and time.

HOW TO CONFIGURE WEEKLY CONTROL
There are 2 modes of setting weekly control:

MODE 1 – the user sets the temperature deviations for each day of the week separately

Configuring mode 1:

Select: Set mode 1
Select the day of the week to be edited
The following screen appears on the display:
Use <+> <-> buttons to select the hour to be edited and press MENU to confirm.
Select CHANGE from the options that appear at the bottom of the screen by pressing MENU when this option is highlighted in white.
Increase or decrease the temperature as needed and confirm.
The range of pre-set temperature change is -10°C to 10°C.
If you want to copy the temperature change value for the next hours, press the MENU button when the setting is selected. When options appear at the bottom of the screen, select COPY and use <+> <-> buttons to copy the settings into the previous or the following hour. Press MENU to confirm.

Example:

If the pre-set CH boiler temperature is 50°C, on Mondays between 400 and 700 the CH boiler will increase by 5°C to reach 55°C; between 700 and 1400 it will drop by 10°C, to reach 40°C, and between 1700 and 2200 it will increase to reach 57°C. If the pre-set CH boiler temperature is 50°C, on Mondays between 400 and 700 the CH boiler will increase by 5°C to reach 55°C; between 700 and 1400 it will drop by 10°C, to reach 40°C, and between 1700 and 2200 it will increase to reach 57°C.

MODE 2 – the user sets the temperature deviations for all working days (Monday-Friday) and for the weekend (Saturday-Sunday) separately.

Configuring mode 2:

Select Set mode 2.
Select the part of the week to be edited.
Follow the same procedure as in the case of Mode 1.

Example:

If the pre-set CH boiler temperature is 50°C, from Monday to Friday between 400 and 700 the CH boiler will increase by 5°C to reach 55°C; between 700 and 1400 it will drop by 10°C, to reach 40°C, and between 1700 and 2200 it will increase to reach 57°C. At the weekend, between 600 and 900 the temperature will increase by 5°C to reach 55°C, and between 1700 and 2200 it will increase to reach 57°C.

Factory settings
This function enables the user to restore the factory settings for a particular valve. Restoring factory settings changes the type of valve selected to CH valve.

Time settings
This parameter is used to set the current time.

Use <+> and <-> to set the hour and minutes separately.

Date settings
This parameter is used to set the current date.

Use <+> and <-> to set the day, month, and year separately.

GSM module

NOTE
This type of control is available only after purchasing and connecting an additional controlling module ST-65 which is not included in the standard controller set.

If the controller is equipped with an additional GSM module, it is necessary to activate it by selecting ON.

GSM Module is an optional device that, cooperating with the controller, enables the user to remote control the CH boiler operation via mobile phone. The user is sent an SMS each time an alarm occurs. Moreover, after sending a certain text message, the user receives feedback on the current temperature of all the sensors. Remote change of the preset temperatures is also possible after entering the authorization code. GSM Module may operate independently of the CH boiler controller. It has two additional inputs with temperature sensors, one contact input to be used in any configuration (detecting closing/opening of contacts), and one controlled output (e.g. a possibility of connecting an additional contractor to control any electric circuit)

When any of the temperature sensors reach the pre-set maximum or minimum temperature, the module automatically sends an SMS message with such information. A similar procedure is used in the case of opening or closing of the contact input, which may be used as a simple means of property protection.

Internet module

NOTE
This type of control is available only after purchasing and connecting an additional controlling module ST-505 which is not included in the standard controller set.

Before registering the module, it is necessary to create a user’s account on emodul.pl ( if you do not have one).
Once the module has been connected properly, select Module ON.
Next, select Registration. The controller will generate a code.
Log on emodul.pl, go to the Settings tab and enter the code that appeared on the controller screen.
It is possible to assign any name or description to the module as well as provide a phone number and e-mail address to which the notifications will be sent.
Once generated, the code should be entered within an hour. Otherwise, it will become invalid and it will be necessary to generate a new one.
Internet module parameters such as IP address, IP mask, gate address enc. maybe set manually or by selecting the DHCP option.
Internet module is a device enabling the user remote control of the CH boiler via the Internet. Emodul.pl enables the user to control the status of all CH boiler system devices and temperature sensors on the home computer screen, tablet, or smartphone. Tapping on corresponding icons, the user may adjust the operation parameters, pre-set temperatures for pumps and valves, etc.

Communication mode

The user may choose between the main communication mode (independent) or the subordinate mode (in cooperation with the master controller at the CH boiler or other valve module ST-431N).
In subordinate communication mode, the valve controller serves as the module and its settings are configured via the CH boiler controller. The following options are unavailable: connecting a room regulator with RS communication (e.g. ST-280, ST-298), connecting the Internet module (ST-65), or the additional valve module (ST-61).

External sensor calibration
External sensor calibration is performed while mounting or after it has been used for a long time if the external temperature displayed differs from the actual temperature. Calibration range is from -10⁰C to +10⁰C. The averaging time parameter defines the frequency at which the external sensor readings are sent to the controller.

Software update
This function is used to update/change the software version installed in the controller.

NOTE
It is advisable to have software updates conducted by a qualified fitter. Once the change has been introduced, it is impossible to restore previous settings.

The memory stick that is going to be used to save the setup file should be empty (preferably formatted).
Make sure that the file saved on the memory stick has the same name as the downloaded file so that it is not overwritten.

Mode 1:

Insert the memory stick with the software into the controller USB port.
Select Software update (in the fitter’s menu).
Confirm controller restart
- The software update starts automatically.
- The controller restarts
- Once restarted, the controller display shows the starting screen with the software version
- Once the installation process is completed, the display shows the main screen.
When the software update has been completed, remove the memory stick from the USB port.

Mode 2:

Insert the memory stick with the software into the controller USB port.
Reset the device by unplugging it and plugging it back in.
When the controller starts again, wait until the software update process starts.
- The following part of the software update is the same as in Mode 1.

Factory settings
This option is used to restore the factory settings of the fitter’s menu.

PROTECTIONS AND ALARMS

To ensure safe and failure-free operation, the regulator has been equipped with a range of protections. In case of alarm, a sound signal is activated and an appropriate message appears on the screen.

| DESCRIPTION
---|---
| It stops the valve temperature control and sets the valve in its safe position (floor valve – closed; CH valve-open).
| No sensor connected/improperly connected sensor/sensor damage. The sensor is essential for proper valve operation so it needs to be replaced immediately.
| This alarm occurs when the return protection function is active and the sensor is damaged. Check the sensor mounting or replace it if damaged.

It is possible to deactivate the alarm by disabling the return protection function

| This alarm occurs when the external temperature sensor is damaged. The alarm may be deactivated when the undamaged sensor is installed properly. The alarm does not occur in other operation modes than ‘Weather-based control’ or ‘Room control with weather-based control’.
| This alarm may occur if the device has been improperly configured with the sensor, the sensor has not been connected, or has been damaged.

To solve the problem, check the connections on the terminal block, make sure the connection cable is not damaged and there is no short circuit, and check if the sensor works properly by connecting another sensor in its place and checking its readings.

TECHNICAL DATA

EU DECLARATION OF CONFORMITY

Hereby, we declare under our sole responsibility that EU-I-1 manufactured by TECH STEROWNIKI II Sp. z o.o., head-quartered in Wieprz Biała Droga 31, 34-122 Wieprz, is compliant with Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits (EU OJ L 96, of 29.03.2014, p. 357), Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of Member States relating to electromagnetic compatibility (EU OJ L 96 of 29.03.2014, p.79), Directive 2009/125/EC establishing a framework for the setting of ecodesign requirements for energy-related products as well as the regulation by the MINISTRY OF ENTREPRENEURSHIP AND TECHNOLOGY of 24 June 2019 amending the regulation concerning the essential requirements as regards the restriction of the use of certain hazardous substances in electrical and electronic equipment, implementing provisions of Directive (EU) 2017/2102 of the European Parliament and of the Council of 15 November 2017 amending Directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic equipment (OJ L 305, 21.11.2017, p. 8).

For compliance assessment, harmonized standards were used: