Tech Controllers EU-28N User Manual
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Tech Controllers EU-28N User Manual

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Summary of Contents for Tech Controllers EU-28N

  • Page 1 EU-28N...

  • Page 2: Table Of Contents

    ABLE OF ONTENTS Safety ......................................4 Device description..................................5 Installing the Controller ................................5 Controller operation ................................... 7 Controller functions – Main Menu .............................. 7 Firing up/ Extinguishing ..............................8 Screen view ..................................8 Temperature settings ................................ 8 5.3.1 CH set temperature ............................... 8 5.3.2 DHW set temperature ..............................
  • Page 3 ALL IMAGES PUBLISHED SERVE ILLUSTRATION ONLY AND MAY DIFFER FROM THE ACTUAL APPEARANCE. EU DECLARATION OF CONFORMITY Hereby, we declare under our sole responsibility that EU-28N manufactured by TECH STEROWNIKI, 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.

  • Page 4: Safety

    AFETY Before operating the device please read the following instructions carefully. Failure to observe these instructions may cause personal injuries and damage the device. To avoid unnecessary errors and accidents, make sure that all persons operating the device are thoroughly familiarized with its operation and safety functions.

  • Page 5: Device Description

    EVICE DESCRIPTION The EU-28N controller is designed for CH boilers. It controls the CH water circulation pump, DHW domestic hot water pump and blowing (fan). If the boiler temperature is lower than the set temperature, the controller is in the operating cycle, in which the blower operates at all times.
  • Page 6 In the back of the controller there are connectors to which sensors and devices operated by the controller should be connected:...

  • Page 7: Controller Operation

    ONTROLLER OPERATION 1. UP button - changes the set temperature from the main screen view, after entering the controller menu, this button is used to increase the operating settings. 2. DOWN button - changes the set temperature from the main screen view, after entering the controller menu, this button is used to reduce the operating settings.

  • Page 8: Firing Up/ Extinguishing

    IRING UP XTINGUISHING After the initial ignition of the boiler, the Ignition function must be activated. In this mode, the fan will start working to facilitate ignition (in a still cold boiler). Once the CH temperature rises to 30°C (the so-called fan threshold), the Fan On/ Off function will appear on the display instead of the Ignition option and the Manual Operation diode will turn off and the boiler will enter the operating mode.

  • Page 9: Fan Speed In Maintaining

    5.4.4 FAN SPEED IN MAINTAINING This option allows you to select the appropriate fan speed (blowing power) in maintaining cycle. ANUAL OPERATION For the convenience of the user, the controller has been equipped with a Manual Operation module. In this function, each actuator (fan, CH pump, DHW pump) is switched on and off independently of the others.

  • Page 10: Time Settings

    Changing weekly control settings: In the EU-28N controller, you can program the weekly control in two different modes: MODE 1 - in this mode it is possible to program deviations of the set temperature for each day of the week separately.

  • Page 11: Installer Menu

    Detailed parameters found in the Installer Menu are described later in the manual. 5.11 ERVICE MENU To enter the service functions of the EU-28N controller, enter the four-digit code. This code is owned by Tech. 5.12 ANGUAGE SELECTION Function that enables the user to select their preferred language version. This change is also possible using the flag button located on the controller.

  • Page 12: Controller Functions - Installer Menu

    ROOM CONTROLER MENU Boiler control This function allows to indicate the type of controller connected to the EU-28N controller, and to program the operation of the room controller. 6.2.1 CH PUMP CONTROL The function enables activation of the control of the room regulator over the operation of the CH pump After activation of this function, the CH pump will be switched off when the room regulator reports reaching the heating temperature of the room.

  • Page 13: Pump Switch-On Temperature

    UMP SWITCH ON TEMPERATURE This option is used to set the switch-on temperature of the pumps (this is the temperature measured on the boiler). Below the set temperature, the pumps do not operate, and above this temperature, the pumps are switched on, but operate depending on the mode of operation.
  • Page 14 OILER HYSTERESIS This option is used to set the hysteresis of the set CH temperature. This is the difference between the temperature of entry into the temperature maintaining cycle and the temperature of return to the operating cycle (e.g. when the set temperature is 60°C and the hysteresis is 3°C, the transition to the maintaining cycle will occur after the temperature is reached 60°C, while the return to the operating cycle will occur after the temperature drops to 57°C).
  • Page 15 ECHNICAL SPECIFICATIONS In the EU-28N controller, one should check the technical condition of the wiring before and during the heating season. Also check the mounting of the controller, clean it from dust and soiling, and measure the grounding of the motors (CH pump, DHW pump, blower).

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