Tech Controllers EU-i-2 Plus OT User Manual
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Tech Controllers EU-i-2 Plus OT User Manual

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Summary of Contents for Tech Controllers EU-i-2 Plus OT

  • Page 1 EU-i-2 Plus OT...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Safety..................................5 Device description ..............................6 III. How to install ................................8 Main screen description ............................11 Installation screen ..............................11 Parameter and panel screen ..........................11 Quick setup of the controller ........................... 12 Part I. How to configure built-in valves, additional valves and room regulators How to configure built-in valve ..........................
  • Page 3 Heating need ................................34 Operation control ..............................35 DHW ..................................36 Controlling the room regulator .......................... 36 Relays ................................. 37 Weekly control ..............................37 Manual mode ..............................39 OFF ..................................39 0-10V contacts................................39 Activity ..................................39 Select operation algorithm ............................. 39 2.1.
  • Page 4 Additional contact ..............................48 Heating circuit ................................ 48 Part X. Sensor settings Sensor settings ................................. 49 Part XI. Factory settings Factory settings ................................ 49 Part XII. Settings Settings ..................................50 Language selection ..............................50 Time settings ................................50 Screen settings ............................... 50 Alarm sounds ................................

  • Page 5: 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 6: Device Description

    DEVICE DESCRIPTION EU-i-2 Plus OT controller is a multi-function device intended for controlling central heating systems. The principle of operation involves mixing the hot supply water with the water returning from the heating circuit in order to reach the desired temperature and maintain it on the same level all the time.
  • Page 7 WiFi RS ST-505 Internet module ST-525 Internet module ST-294v1 Room regulator ST-280 Room regulator ST-292 Room regulator Dedicated room regulator RI-1 Dedicated room regulator RI-2 i-1m valve module 10. i-1 valve module...

  • Page 8: How To Install

    III. HOW TO INSTALL EU-i-2 Plus OT controller should be installed by a qualified person. It may be installed as a free-standing device or as a panel mountable on a wall. WARNING Risk of fatal electric shock from touching live connections. Before working on the controller switch off the power supply and prevent it from being accidentally switched on Remove the controller cover to connect the wires.
  • Page 9 Additional connector Left terminal strip RS Input Right terminal strip Earth bar Open Therm Styki 0-10V...
  • Page 10 Connectors, symbols and example use...

  • Page 11: Main Screen Description

    MAIN SCREEN DESCRIPTION The device is controlled using the touch screen. 1. INSTALLATION SCREEN 1. Pre-set room temperature 11. Scroll arrow 2. Current room temperature 12. Return temperature 3. Day of the week and time 13. Active additional contact ( N1, N2 - voltage 4.

  • Page 12: Quick Setup Of The Controller

    QUICK SETUP OF THE CONTROLLER...

  • Page 13: How To Configure Built-In Valve

    Number of valves Valve 1 Additional contacts TECH RS regulator Cascade Ethernet module Cooling Gas boiler Sensor settings Factory settings PART I How to configure built-in valves, additional valves and room regulators HOW TO CONFIGURE BUILT-IN VALVE Only pump* Type of valve Opening time CH sensor Pump activation...
  • Page 14 * select in case of circuit operation without a mixing valve ** this option appears when the floor valve type has been selected 1. Enter the fitter’s menu 2. Select the number of valves needed 3. Configure one of then selecting ‘Valve 1’ option 4.
  • Page 15 NOTE If the CH sensor has not been connected and ‘Boiler protection’ function is enabled, the controller will EU-i-2 Plus OT inform the user about the lack of sensor through an alarm. Connecting CH sensor 7. Enable the pump Operation modes: ...
  • Page 16 Select dedicated regulator (Tech RS regulator) - Pre-set valve temperature control is performed via room regulators dedicated to the EU-i-2 Plus OT controller. The user may register up to 4 dedicated regulators: the ST- 280 regulator or Dedicated regulators 1-3.

  • Page 17: Weather-Based Control

    - pre-set reduction temperature). 3. Pump deactivation - when the room regulator reports that the pre-set room temperature has been reached, the circuit pump will be disabled. EU-i-2 Plus OT Regulator input 3 Example connection of a two-state regulator...

  • Page 18: Mixing Valve Settings

    This function requires the use of external set valve temperature only by selecting the range on the heating sensor. curve. EU-i-2 Plus OT Connecting the external sensor NOTE When return protection valve type has been selected, the weather-based control function does not work.
  • Page 19  Hysteresis – the hysteresis between the pre-set temperature and current valve temperature.  Single stroke - This is a 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 on the basis of <proportionality coefficient>...
  • Page 20   CH boiler protection - this function serves to prevent hazardous growth of CH boiler temperature. The user sets the maximum acceptable CH boiler temperature. In case of hazardous growth in the temperature, the valve begins to open in order to cool the CH boiler down. This function is disabled by default.

  • Page 21: Quick Setup Of The Mixing Valve

    QUICK SETUP OF THE MIXING VALVE NUMBER OF VALVES Select the number of valves needed. VALVE 1 Select a valve and move on to configure it. VALVE TYPE Select appropriate type of valve. OPENING TIME Copy the time from the actuator rating plate.

  • Page 22: Additional Valves

    3. Find the additional valve, go to registration and enter the code from the additional module. OT OT EU-I-2 PLUS EU-i-2 Example connection between additional valve and EU-i-2 Plus OT main controller NOTE NOTE Registration code consists of 5 digits and can be found...

  • Page 23: Part Ii. Controller Operation Modes

    PART II Controller operation modes Menu Heating circuit Operation mode WATER TANK PRIORITY In this mode, water tank pump (DHW) is activated first in order to heat domestic water. Mixing valves are activated once the pre-set DHW temperature has been reached. The valves operate continuously until the water tank temperature drops below the pre-set value by the pre-defined hysteresis.

  • Page 24: Automatic Summer Mode

    AUTOMATIC SUMMER MODE This option involves automatic switching between modes. When the external temperature exceeds the activation threshold of Summer automatic mode, the valves will close. When the external sensor detects that a given threshold has been exceeded, the controller switches to summer mode. Average temperature is calculated on an ongoing basis. When it is lower than the pre-set value, the operation mode will switch to the previous one.

  • Page 25: Anti-Legionella

    EU-i-2 Plus OT Connecting DHW sensor  Pre-set DHW temperature - This option is used to define the pre-set temperature of domestic hot water. Once the temperature is reached, the pump is disabled.  DHW hysteresis - the temperature difference between device activation and its deactivation (e.g. when the pre- set temperature is set at 60ºC and the hysteresis value is 3ºC, the device will be disabled when the temperature...

  • Page 26: Iii. Pump Anti-Stop

    From the moment the disinfection is activated, the disinfection temperature must be reached within the time set by the user (Heating circuit> DHW pump> Anti-legionella> Max. time of disinfection heating). Otherwise, this function will be deactivated automatically. Using <Automatic operation> function, the user can define the day of the week when thermal disinfection will be carried out.

  • Page 27: Manual Mode

    PART IV Manual mode MANUAL MODE This function enables the user to check if every device works properly by switching on each device separately: DHW pump, additional contacts and valves. In the case of valves, it is possible to initiate opening and closing as well as check if the pump of a given valve works properly.

  • Page 28: Part V. Additional Contacts

    Blank space for your scheme: PART V Additional contacts VOLTAGE CONTACTS AND VOLTAGE-FREE CONTACTS An example connection scheme involves contact 1. In reality it may be any other contact. NOTE NOTE Voltage contacts 1, 2 are intended for connecting Voltage-free contacts 1,2 operate on ‘open/close’ devices powered by 230V.

  • Page 29: How To Configure A Contact

    HOW TO CONFIGURE A CONTACT In each algorithm the user may configure the following parameters:  Activity – operation in summer mode, in the remaining modes or in both cases.  Status during alarm – this function enables the user to decide if the device connected to this additional contact should be switched on (operating according to the selected algorithm) or switched off during an alarm.

  • Page 30: Iii. Voltage And Voltage-Free Contact Algorithms

    III. VOLTAGE AND VOLTAGE-FREE CONTACT ALGORITHMS CIRCULATING PUMP This algorithm is intended for controlling the operation of e.g. a circulating pump. The user may select the operation mode and adjust the pre-set temperature as well as the operation time and pause time of the contact. Once the algorithm has been selected, the installation screen shows a graphic representation of the circuit.

  • Page 31: Pump

    Example: Activation delta: 10°C Hysteresis: 2°C Source temperature: 70°C The device connected to the contact will be enabled when the buffer temperature drops below 60°C ( Source temp. - delta). It will be disabled when the temperature increases to 62°C (Source temp. - delta) + hysteresis. CH PUMP This algorithm is intended for controlling the operation of e.g.

  • Page 32: Additional Heat Source

    ADDITIONAL HEAT SOURC E The algorithm is based on the readings from one temperature sensor. The device connected to the contact will be enabled when the temperature measured by the sensor drops. It will be disabled when the temperature increases by the pre-set overheating value.

  • Page 33: Buffer

    BUFFER The algorithm is based on the readings from two temperature sensors. The device connected to the contact will be enabled when the temperature of both sensors drops below the pre-set value. It will operate until the pre-set temperature of the buffer bottom sensor is reached. •...

  • Page 34: Heating Need

    • Pre-set buffer top - this function enables the user to define the pre-set temperature for the upper part of the buffer (top sensor). Once this value is reached and the delay time is over, the pump is disabled (provided that the pre-set buffer temperature bottom has also been reached).

  • Page 35: Operation Control

    OPERATION CONTROL The algorithm is based on the readings from one temperature sensor. The device connected to the additional contact will be used to control the operation of a different contact, DHW pump or room regulators. The device connected to the contact will be enabled when the controlled contact is switched on and the selected sensor fails to reach the pre-set temperature when the delay time is over.

  • Page 36: Dhw

    This algorithm is intended for controlling the operation of e.g. DHW pump. It is based on the readings from two sensors. The device connected to the additional contact will be enabled if the temperature measured by the source sensor is 2°C higher than the activation threshold and when the temperature drops below the pre-set value by the value of hysteresis.

  • Page 37: Relays

    RELAYS This algorithm is intended for controlling the device which will be activated together with the selected system devices. Enter Operation modes and configure the mode of contact activation: • All - the contact will be enabled when all selected relays are active. •...
  • Page 38 1. OFF 2. Copy the previous step 3. ON 4. Change the time period backwards 5. Change the time period forwards 6. Time period bar (24 hours) Example: In order to program valve closing for 09:00 - 13:00, follow these steps: 1.

  • Page 39: Manual Mode

    MANUAL MODE This option enables the user to enable/disable a given contact permanently. This function enables the user to deactivate the additional contact altogether. IV. 0-10V CONTACTS Voltage modulation from 0 to 10V is performed with the use of two 0-10V voltage outputs. Summer mode Activity Remaining modes...
  • Page 40 Example: The current voltage is within the range of 2V to 5V. For the temperature of 15°C -> 2V. For the temperature of 30°C -> 5V.  Voltage surge – every one degree Celsius deviation from the pre-set temperature results in the pre-defined increase in the voltage (voltage surge).

  • Page 41: Manual Mode

    2.2. MANUAL MODE  Manual mode – this algorithm is based on the readings from one selected temperature sensor. The contact will provide the set voltage (VOLTAGE) if the temperature measured by the selected sensor drops below the pre- set value by the value of hysteresis of the selected circuits, with a valve or DHW or additional contact (after selecting the algorithm: CH pump, additional heat source, buffer, DHW buffer).

  • Page 42: Operation Mode

    There are separate settings for DAY and NIGHT. They work in the same way. Operation time and pause time is separate for each contact. It is also different for day and night in the case of every contact. It is possible to reset the motohours. The 0-10V 1 and 0-10V 2 contacts offer two ways of calculating voltage: - the voltage is pre-set in advance (separately for contacts 0-10V 1 and 0-10V 2 and separately for e.g.

  • Page 43: Selects Sensor

    SELECTS SENSOR The user may select the sensor which will provide temperature readings for the cascade. VOLTAGE If a 0-10V contact has been selected for the cascade, the user may configure the contact operation parameters: • Pre-set temperature bottom - if the calculated pre-set temperature is lower than this value, the voltage equals 0 V (also in case of heating need).

  • Page 44: Part Vii. Ethernet Module

    PART VII Ethernet module ETHERNET MODULE Internet module is a device enabling the user remote control of the heating system. The user controls the status of all heating system devices on a computer screen, a tablet or a mobile phone. Apart from the possibility to view the temperature of every sensor, the user can change the pre-set temperature of the pumps as well as the mixing valves.

  • Page 45: Part Viii. Gas Boiler (Open Therm)

    Part VIII Gas boiler (OpenTherm) GAS BOILER (OPEN THERM) This function enables the user to control a gas CH boiler with the use of the Open Therm protocol. HEATING NEED A gas CH boiler operating in this mode will be enabled when it is not possible to reach the pre-set temperature of a selected valve (valve 1-3, additional valve 1-2), DHW circuit or when a contact is active after selecting the algorithm: CH pump, additional heat source, buffer, DHW buffer.

  • Page 46: Alarm Message

    ALARM MESSAGE If this option is selected, in OpenTherm communication algorithm in case of a gas boiler alarm, the user is informed about the alarm with a notification on the controller screen. It does not affect the operation of other devices or the OpenTherm algorithm.

  • Page 47: Part Ix. Cooling

    Part IX Cooling Operation mode Summer mode Condition of Constant mode activation Activity Regulator input 1,2,3 Select sensor Pre-set temperature Pre-set temperature Voltage contact Additional Hysteresis contact Voltage-free contact 1,2 Activity Pre-set temperature Circuit 1-2 Heating curve Pump activation Heating circuit threshold Factory settings Activity...

  • Page 48: Condition Of Activation

    CONDITION OF ACTIVATI ON In this submenu, the user selects the operation mode and defines the necessary condition which must be met to activate cooling in a particular circuit. NOTE Regulator input 3 can only be used when cooling is ON. Example: The selected condition is Regulator 1 and 2 inputs and the selected operation mode is All.

  • Page 49: Part X. Sensor Settings

    PART X Sensor settings Menu Fitter’s menu Sensor settings SENSOR SETTINGS  External sensor calibration – it 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.

  • Page 50: Part Xii. Settings

    PART XII Settings Menu Settings SETTINGS Language selection Clock settings Time settings Date settings Screen brightness Screen settings Blank screen brightness Alarm sound Valve temperature too Notifications Water tank temperature too low Lock Software version LANGUAGE SELECTION This option is used to select the language version of the software. TIME SETTINGS This option is used to set the date and time displayed in the main screen.

  • Page 51: Lock

    LOCK This function enables the user to lock access to the main menu. Follow these steps: 1. Select Access code option 2. Set your PIN code which will enable you to access the menu 3. Click OK to confirm. NOTE The default PIN code is 0000.
  • Page 52 4. Change time period backwards 5. Change time period forwards 6. Time period bar (24 hours) Example: Set current time and date (Menu > Settings > Time settings > Clock settings/Date settings). Select day of the week (Schedule modification) to program temperature deviation for certain hours. In order to program +5⁰C deviation for 06:00AM - 07:00AM and -5⁰C for 07:00AM- 3:00PM, follow these steps: ...

  • Page 53: Technical Data

     Select the day to copy the settings from  Select day(s) to which the settings will be copied TECHNICAL DATA Power supply 230V ± 10% / 50Hz Max. power consumption Ambient temperature C ÷ 50 Valve max. output load 0,5A Pump max.

  • Page 54: Protections And Alarms

    PROTECTIONS AND ALARMS In case of an alarm, a sound signal is activated and the display shows an appropriate message. Alarm How to fix it CH sensor damaged DHW sensor damaged Valve 1,2 sensor damaged - Check if the sensor has been installed properly. -If the cable has been extended, check the quality of the Additional valve 1, 2 sensor damaged connection (soldered joints are recommended).
  • Page 55 EU Declaration of conformity Hereby, we declare under our sole responsibility that EU-i-2 Plus OT controller manufactured by TECH, 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.

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