Tech Controllers i-2 User Manual
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Tech Controllers i-2 User Manual

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Summary of Contents for Tech Controllers i-2

  • Page 1 User manual...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Safety ..................................4 Device description ..............................5 III. Installation ................................. 6 First start-up ................................10 Principle of operation .............................. 11 Main screen description ............................11 VII. Controller menu............................... 12 1.1. Block diagram of central heating circulation ....................12 1.2.
  • Page 3 7.9. Velve deactivation ............................. 27 7.10. Factory settings ..............................30 8.1. Simplified block diagram – additional contacts submenu ................31 8.2. Buffer ................................. 32 8.3. CH pump ................................33 8.4. DHW ................................... 34 8.5. Operation control .............................. 36 8.6. Room regulator control ............................. 37 8.7.

  • 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: Device Description

    II. DEVICE DESCRIPTION i-2 controller is a multi-function device intended for controlling central heating systems. Thanks to advanced software, the device offers a wide range of functions:  Smooth control of three mixing valves.  Control of the circulating pump.

  • Page 6: Installation

    III. INSTALLATION Controller should be installed by a qualified person. Regulator 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 switched on again.
  • Page 7 In order to wire up the controller, the cover should be removed. Bolts fastening the controller cover RS input Right terminal strip Left terminal strip Earth bar...
  • Page 9 Pictorial diagram – it cannot replace CH installation project. Its aim is to present how the controller may be expanded. This heating installation diagram does not include protective elements which are necessary to ensure correct installation. WARNING In case of no flow in short circulation of CH boiler (incorrect installation), return sensor should be placed at CH boiler hot water outlet in order to prevent the water from boiling.

  • Page 10: First Start-Up

    IV. FIRST START-UP In order for the controller to operate correctly, the following steps must be followed when starting the device for the first time: Wire up the controller. 2. Set the valve actuators manually at 50%. Actuator set at 50% opening Switch the controller After the device is switched on, the valves are calibrated automatically to 100%.

  • Page 11: Principle Of Operation

    V. PRINCIPLE OF OPERATION Controller operation involves mixing the hot circulating water with the water returning from the heating circuit in order to reach and maintain the pre-set temperature. Pumps which are connected to each valve circuit help to distribute the water throughout the system. A pump should be connected behind the mixing valve whereas the temperature sensor should be placed behind both the pump and the valve in order to ensure accurate measurement of the valve output temperature.

  • Page 12: Controller Menu

    VII. CONTROLLER MENU 1. HEATING CIRCULATION 1.1. BLOCK DIAGRAM OF CEN TRAL HEATING CIRCULA TION Water tank priority Parallel pumps Operation mode House heating Summer mode Summer automatic mode Circulation 1 Pre-set temperature Operation mode Automatic mode Pre-set DHW Heating temperature DHW hysteresis DHW pump...

  • Page 13: Operation Mode

    1.2. OPERATION MODE This function enables the user to select one of five operation modes available:  Boiler 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 is reached. The valves operate continuously until the water tank temperature drops below the pre-set value by the pre-defined hysteresis.

  • Page 14: Dhw Pump

    1.4. DHW PUMP This option enables the user to configure:  Operation mode  OFF – DHW pump is switched off.  Automatic mode – DHW pump operates according to pump activation temperature setting.  Heating - The pump operates until the pre-set DHW temperature is reached. In this mode, the source temperature and maximum CH temperature are ignored.

  • Page 15: Block Diagram Of Manual Mode

    PRACA RĘCZNA Funkcja ta umożliwia kontrolę działania poszczególnych urządzeń. Użytkownik ma możliwość ręcznego załączenia każdego z urządzeń: pompa C.W.U., styki dodatkowe oraz zawory. W przypadku zaworów użytkownik może załączyć zamykanie lub otwieranie, a także sprawdzić poprawność działania pompy danego zaworu. 2.1.

  • Page 16: Block Diagram Of Fitter's Menu

    3. FITTER’S MENU Fitter’s menu is intended to be used by a qualified person in order to configure additional functions of the controller. Below you can find a simplified block diagram of Fitter’s menu. 3.1. BLOCK DIAGRAM OF FITTER’S MENU TECH RS regulator Number of built-in valves...

  • Page 17: Tech Rs Regulator

    3.2. TECH RS REGULATOR This option enables the user to switch on/off TECH room regulator with RS communication (e.g. ST-280, ST-296 RS or ST- 298). In order for the regulator to cooperate with proper valve, it is necessary to activate this type of room temperature control and select proper operation mode in a given valve submenu.

  • Page 18: Ethernet Module

    3.6. 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 19 4. PARAMETERS SCREEN It enables the user to view all sensors connected to the controller. The user may monitor:  Sensors temperatures  Status of room regulators  Status of valves 1,2  Status of additional valves 1,2  Status of pump ...

  • Page 20: Block Diagram Of Settings

    6. SETTINGS 6.1. BLOCK DIAGRAM OF SETTINGS Language selection Clock settings Time settings Date settings Screen brightness Screen settings Blank screen brightness Alarm sound Lock Software version 6.2. LANGUAGE SELECTION This option is used to select the software language preferred by the user. 6.3.

  • Page 21: Alarm Sound

    6.5. ALARM SOUND This option is used to activate/deactivate an alarm sound informing about failure. 6.6. BLOCKADE 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.

  • Page 22: Simplified Block Diagram Of Valve 1 Submenu

    7. VALVES 7.1. SIMPLIFIED BLOCK DIAGRAM OF VALVE 1 SUBM ENU CH valve Valve type Floor valve Opening time Maximum floor temperature Standard regulator Room regulator TECH RS regulator Room regulator function Always OFF Pump activation Always ON ON above threshold Weather-based control Temperature control Opening direction...

  • Page 23: Valve Type

    7.2. VALVE TYPE By means of this setting the user selects the type of valve to be controlled:  CH valve – selected if the user wants to control the CH circulation temperature.  Floor valve - selected if the user wants to control the temperature of the underfloor heating circulation. It protects the underfloor heating installation against dangerous temperature.
  • Page 24 CH boiler, water tank and the valves. This regulator should be plugged to RJ (telephone-type) socket of the i-2 controller using a four-core cable with appropriate plugs (to the RS socket). ...

  • Page 25: Pump Activation

     Room regulator function - This parameter defines the influence of room regulator on valve operation.  Closing - When room regulator sends a signal informing that the pre-set room temperature has been reached, the controller will close the main valve. ...
  • Page 26 In order to configure the pre-set temperature value, touch and drag appropriate points up or down (the pre-set valve temperature will be displayed on the left), or use arrows to select the temperature value. Subsequently, the display will show the heating curve. ...

  • Page 27: Sensor Selection

    7.7. CH SENSOR SELECTION This option is used to select the sensor which should serve as CH sensor. It may be any sensor which is connected to the controller. NOTE Always make sure if proper sensor is selected to ensure correct pump operation. 7.8.
  • Page 28 1. OFF 2. Copy previous step 3. ON 4. Change time period backwards 5. Change time period forwards 6. Time period bar (24 hours) Example: In order to program valve closing at 09:00 - 13:00, the user should: 1. Select <OFF> 2.
  • Page 29 It is possible to copy the settings for selected days of the week:  Select <Copy> (top right-hand corner)  Select the day to copy the settings from  Select day(s) to which the settings will be copied...

  • Page 30: Factory Settings

     External temperature - The user may set nighttime and daytime temperature at which the valve will be deactivated. It is also possible to program hours when the controller will operate in day or night mode. The user sets the hysteresis of valve deactivation temperature. 7.10.

  • Page 31: Simplified Block Diagram - Additional Contacts Submenu

    8.1. SIMPLIFIED BLOCK DIAGRAM – ADDITIONAL CONTACTS SUBMENU Summer mode Activity Remaining modes Buffer CH pump Operation control Room regulator control Circulating pump Heating need Operation algorithm selection Weekly control DHW buffer Relays Additional heat source Buffer pump Alarm NOTE This section includes pictorial diagrams of system connections.

  • Page 32: Buffer

    8.2. BUFFER This algorithm is used to heat water in the buffer by activating the heating device. Example: Part of the heating system is handled by CH boiler and buffer. CH boiler is connected to voltage-free contact with buffer function. Its task is to heat water in the buffer. Top buffer temperature is read by sensor T4 (CH) and bottom buffer temperature is read by sensor T8.

  • Page 33: Pump

    8.3. CH PUMP This algorithm is used to control CH pump. The following settings need to be configured properly:  Pump activation threshold - this option is used to set the device activation temperature. Below this temperature the device remains inactive; above this value the device is enabled.

  • Page 34: Dhw

    8.4. This algorithm is used to control DHW pump. The following settings need to be configured properly:  Pump activation threshold - this option is used to set the device activation temperature (measured by the heat source sensor which reads the temperature of the heat source e.g. CH boiler). Below this temperature the device remains inactive;...
  • Page 35  Maximum temperature – his option is used to set maximum temperature of source sensor. Once it has been reached, the device is enabled and remains active until the source temperature drops below maximum temperature by 2°C or DHW sensor temperature exceeds the source temperature. This function serves as protection against system overheating.

  • Page 36: Operation Control

    8.5. OPERATION CONTROL If the user selects this option, additional contact will be used to control other contact operation. In order for this function to operate correctly, the following parameters need to be configured:  Pre-set - this parameter defines the pre-set temperature which must be reached by the selected sensor.

  • Page 37: Room Regulator Control

    Example: Part of the heating system is handled by 2 CH boilers and a buffer. The task of the boilers is to heat the water in the buffer. Gas boiler is connected to voltage-free contact 2 with operation control function. The other boiler is connected to voltage- free contact 3 with buffer function.

  • Page 38: Circulating Pump

    Example: The controller handles central heating system with CH boiler and three valves. Gas boiler is connected to voltage-free contact. The user selected standard regulator 1, standard regulator 2, TECH RS regulator and DHW function. If any of these devicessignalizes the need for heating, the contact will close and the device will be active until a ll the regulators reach their pre-set temperatures.

  • Page 39: Need For Heating

    8.8. NEED FOR HEATING The device connected to additional contact will be enabled in order to heat the valve when the pre-set valve temperature cannot be reached. Once this option is selected, the user chooses the temperature sensor which will provide temperature readings for this function.

  • Page 40: Weekly Control

    8.9. WEEKLY CONTROL Once weekly control function is selected, the user configures contact activation schedule. Setting Operation schedule is described in section 7.9. 8.10. DHW BUFFER The device will operate until the pre-set temperature values of buffer 'top' and ‘bottom' are reached – in order for the pump to be switched off, both sensors must reach the pre-set temperature.

  • Page 41: Relays

     Top sensor – this option is used to select the sensor which will serve as the top sensor. It should be placed in the upper part of the tank.  Bottom sensor - this option is used to select the sensor which will serve as the bottom sensor. It should be placed in the lower part of the tank.
  • Page 42  Hysteresis - This function is used to set the hysteresis of pump activation temperature.  Sensor – This function is used to select the sensor which will provide temperature readings for additional heat source activation/deactivation.  Room regulator – This function is used to select the room regulator which will influence additional heat source operation.

  • Page 43: Buffer Pump

    8.13. BUFFER PUMP Buffer pump will be enabled when source sensor temperature exceeds buffer temperature by activation delta. The pump will remain active until threshold temperature plus hysteresis is reached.  Activation delta - It is the difference between source temperature and buffer temperature at which the pump is enabled (it is the pump activation threshold).

  • Page 44: Weekly Control

    VIII. WEEKLY CONTROL Weekly control function enables the user to program daily temperature changes. The pre-set temperature deviation range is +/- 20°C. 1. Decrease temperature deviation 2. Copy previous step 3. Increase temperature deviation 4. Change time period backwards 5. Change time period forwards 6.
  • Page 45 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 46: Technical Data

     Select the day to copy the settings from  Select day(s) to which the settings will be copied IX. TECHNICAL DATA Specification Value from 10 C to 99 Range of CH valve temperature setting from 10 C to 50 Range of floor valve temperature regulation from 5 C to 80...

  • Page 47: Protections And Alarms

    X. 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 Additional valve 1, 2 sensor damaged - Check if the sensor is installed properly Return sensor damaged - Call the service...
  • Page 51 EU Declaration of conformity Hereby, we declare under our sole responsibility that i-2 regulator manufactured by TECH, headquartered in Wieprz Biała Droga 31, 34-122 Wieprz, is compliant with:  Directive 2014/35/EU of the European Parliament and of the Council of...

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