Tech Controllers EU-L-12 User Manual
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Tech Controllers EU-L-12 User Manual

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EU-L-12

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Summary of Contents for Tech Controllers EU-L-12

  • Page 1 EU-L-12...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Safety ....................................4 System description ................................5 III. How to install ................................... 5 First start-up .................................. 12 Main screen description ..............................13 An example screen view – zones ............................13 An example screen view – zone ............................14 Controller functions ...............................
  • Page 3 Factory settings ................................35 Software version................................35 VII. Alarm list ..................................35 VIII. Software update ................................37 Technical data ................................38 JG. 07.02.2023 The pictures and diagrams are for illustration purposes only. The manufacturer reserves the right to introduce some changes.

  • Page 4: Safety

    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.

  • Page 5: System Description

    II. SYSTEM DESCRIPTION The EU-L-12 external controller is the heart of an extensive heating control system. It has wireless and RS 485 wired communication. Its primary function is to maintain the pre-set temperature in each zone. It is the main unit which, together...
  • Page 7 Mounting electrolytic capacitors In order to reduce the phenomenon of fluctuation in the temperature read from the zone sensor, use a 220uF / 25V low impedance electrolytic capacitor connected parallel to the sensor cable. When installing a capacitor, pay special attention to polarization.
  • Page 9 Connecting external controllers In the case of a wired connection between devices: external controllers (EU-L-12 and EU-ML-12), regulators and the panel, termination resistors (jumpers) should be used at the beginning and at the end of the transmission line. The external controllers have a built-in termination resistor, which should be set in the appropriate position: •...
  • Page 10 Connection between external controller and regulators In the case of connecting the regulators to the first external controller, the jumper should be switched to the ON position in the external controller and the last regulator. In the case of connecting the regulators to the external controller placed in the middle of the transmission line, the jumper should be switched to the ON position in the first and the last regulator.
  • Page 11 Connection between external controller and panel NOTE The panel should be connected to the first or last external controller due to the fact that the panel does not use a termination resistor.

  • Page 12: First Start-Up

    Step 4. Configure the settings for temperature sensors and room regulators In order to enable the EU-L-12 to control a given zone, it is necessary to provide it with current temperature value. The easiest way is to use a wired or wireless temperature sensor (EU-C-7p, EU-C-mini, EU-CL-mini, EU-C-8r). If the user wants to be able to change the pre-set temperature value directly from the zone, it is advisable to use EU-R-8X, EU-R-8b, EU-R-8z, EU-R-8b Plus room regulators or dedicated regulators EU-R-12b, EU-R-12s, EU-F-12b or EU-R-X.

  • Page 13: Main Screen Description

    V. MAIN SCREEN DESCRIPTION The user navigates in the menu structure using the buttons located below the display. 1. Display 2. MENU button - enter the controller menu, confirm the settings - 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 parameters of different zones.

  • Page 14: An Example Screen View - Zone

    4. Voltage-free contact ON zone heating ON zone cooling ON 5. Current time 6. DHW function active 7. Current operation mode/schedule in a given zone local schedule constant temperature G-1….G-5 global schedule 1-5 02:08 with time limit 8. Signal strength and battery level in the room sensor 9.

  • Page 15: Controller Functions

    10. Number of actuators registered in the given zone 11. Icon of the given zone 12. Current humidity level in the given zone 13. Zone name VI. CONTROLLER FUNCTIONS Operation mode Menu Zones Controller settings Fitter's menu Service menu Factory settings Software update 1.

  • Page 16: Operation Mode

    NOTE If the duration of a given pre-set temperature value is set as CON, this temperature will apply for an indefinite period of time (constant temperature). 2.3. OPERATION MODE This submenu enables the user to view, edit and configure the operation mode in a given zone. •...

  • Page 17: Controller Settings

    • Next, go on to edit the days which will be assigned to the first or the second part of the week. Active days are displayed in white. Use the MENU button to confirm and the arrows to move between the days. Once the schedule for all days has been set, press the EXIT button and select Confirm by pressing the MENU button.

  • Page 18: Main Module

    4.1. MAIN MODULE The EU-L-12 controller is treated as the main module offering the user access to 8 zones which may be freely configured. 4.1.1. ZONES Menu Fitter’s menu Main module Zones Room sensor Zones Pre-set temperature Operation mode Outputs configuration...
  • Page 19 4.1.1.4. OUTPUTS CONFIGURATION The option is used to control the outputs: floor pump, voltage-free contact and outputs of sensors 1-8 (NTC for temperature control in the zone or floor sensor for floor temperature control). The outputs of sensors 1-8 are assigned to zones 1-8 respectively.
  • Page 20 – pre-programmed change from economical temperature to comfort temperature Activating this function means that at the time of a pre-programmed change of the pre-set temperature from comfort to economical or the other way round, the current room temperature is close to the desired value. NOTE The Optimum start function works only in the heating mode.
  • Page 21 • Protection - when this function has been selected, the controller starts monitoring the temperature. If the pre-set temperature is exceeded by the number of degrees specified in the Range parameter, all actuators in a given zone will be closed (0% opening). This function works only when the SIGMA function is enabled. •...
  • Page 22 ➢ Calibration – floor sensor calibration should be performed while mounting or after it has been used for a long time, if the floor temperature displayed differs from the actual temperature. Calibration setting range is from -10°C to +10°C with the accuracy of 0,1°C. NOTE The floor sensor is not used in the cooling mode.
  • Page 23 Main module Mixing valve The EU-L-12 controller may control an additional valve using a valve module (e.g. EU-i-1m). This valve offers RS communication, but it is necessary to carry out the registration process, which requires the module number (found on the back of the module casing or in the software version screen).
  • Page 24 ➢ Minimum opening - the parameter determines the smallest valve opening. Thanks to this parameter, the valve may be opened minimally, to maintain the smallest flow. NOTE If the minimum opening is set to 0% (completely closed), the pump will not work when the valve is closed. ➢...
  • Page 25 functions do not work: CH boiler protection, Return protection. This type of valve works despite Summer mode being active, whereas the pump operation is based on deactivation threshold. In addition, this type of valve has a separate heating curve for the Weather-based control function.
  • Page 26 This function is active only with RS room regulator and it is closely related to the Room temperature difference parameter. Example: 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 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).
  • Page 27 ➢ 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 circuit of the boiler reaches the appropriate temperature. NOTE This function is not available when the Cooling...
  • Page 28 MODE 1 – the user sets the temperature deviations for each day of the week separately. In order to do it, follow these steps: → Select Set mode → Select the day of the week to be edited. → Use the buttons to select the hour for which the temperature will be edited and confirm by pressing the MENU button.

  • Page 29: Additional Modules

    An external temperature sensor can be connected to the EU-L-12 controller, which enables weather-based control function to be activated. The system allows only one to be registered in the main module (EU-L-12), and the current value of the outside temperature is displayed on the main screen and sent to other devices (EU-ML-12 and EU-M-12).

  • Page 30: Control Panel

    4.5. REPEATER CONFIGURATION Menu Fitter’s menu Repeater configuration In order to be able to use the repeater between the EU-L-12, EU-ML-12 and EU-M-12 controllers, it must first be configured. Activate the Repeater configuration function in the EU-L-12 controller by selecting Menu →...

  • Page 31: Internet Module

    4.6. INTERNET MODULE Menu Fitter’s menu Internet module Internet module is a device enabling the user remote control of the CH boiler via the Internet. The emodul.eu application enables the user to control the status of all the system devices as well as adjust certain parameters. After registering and switching the module on and selecting DHCP option, the controller automatically downloads such parameters as IP Address, IP Mask, Gateway Address and DNS Address from the local network.

  • Page 32: Voltage-Free Contact

    Pump EU-L-12 controls the pump operation - it enables the pump (after the pre-defined delay time) if any of the zones has not reached the pre-set temperature and the floor pump operation option has been activated in the given zone. When all the zones reach the pre-set temperature, the pump is disabled.

  • Page 33: Maximum Humidity

    4.13. MAXIMUM HUMIDITY Menu Fitter’s menu Maximum humidity If the current humidity level is higher than the maximum humidity, cooling will be disabled in a given zone. NOTE This function is available in the Cooling mode when a humidity sensor is registered in the zone. 4.14.

  • Page 34: Language

    4.15. LANGUAGE Menu Fitter’s menu Language This function enables the user to change the controller language version. 4.16. DHW SETTINGS Menu Fitter’s menu DHW settings ➢ ON – the relay output of zone 8 is used as a DHW output ➢...

  • Page 35: Factory Settings

    4.18. FACTORY SETTINGS Menu Fitter’s menu Factory settings This parameter enables the user to restore the Fitter’s menu settings saved by the manufacturer. 5. SERVICE MENU The parameters available in the service menu should be configured only by authorized persons and access to this menu is secured with a code (provided by TECH Sterowniki) 6.
  • Page 36 ERROR #3 - The valve got stuck - Inappropriate valve on the - Inspect the valve operation radiator - Replace the valve on the radiator - Check the valve stroke - Too little stroke (movement) of the valve ERROR #4 - No range - Check the distance between the actuator and the controller...

  • Page 37: Software Update

    • the actuator was not fully tightened onto the valve • actuator movement was excessive, or non-standard valve encountered • motor load measurement failure occurred Check the assembly and recalibrate the actuator. • valve movement was too small, or a non-standard valve encountered Bolt extension too short.

  • Page 38: Technical Data

    IX. TECHNICAL DATA Power supply 230V ± 10% / 50 Hz Maximum power consumption Ambient temperature 5 ÷ 50°C Maximum load of voltage outputs 1-8 0,3A Maximum load of pump 0,5A 230V AC / 0,5A (AC1) * Potential-free cont. nom. out. load 24V DC / 0,5A (DC1) ** Thermal resistance of NTC sensor -30 ÷...
  • Page 39 EU DECLARATION OF CONFORMITY Hereby, we declare under our sole responsibility that EU-L-12 manufactured by TECH, head‐quartered in Wieprz Biała Droga 31, 34‐122 Wieprz, is compliant with Directive 2014/53/EU of the European parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment, Directive 2009/125/EC establishing a framework for the setting of ecodesign requirements for energy‐related...

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