Tech Controllers EU-402N PWM User Manual
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Tech Controllers EU-402N PWM User Manual

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Summary of Contents for Tech Controllers EU-402N PWM

  • Page 1 EU-402N PWM...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Safety..................................3 Use ..................................... 4 III. Principle of operation ..............................4 User menu .................................. 5 Home page ................................5 Main menu – block diagram ............................. 6 2.1. Operation mode .............................. 6 2.2. Clock ................................7 2.3. Date ................................. 8 2.4.

  • Page 3: 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 4: Use

    II. USE EU-402N temperature regulator is intended for controlling solar collector systems in various configurations. The device controls the collector pumps (or both the pump and the valve) on the basis of solar batteries temperature and the accumulation tank temperature (two tanks). Optionally, it is possible to connect an additional device: circulating pump, electric heater or to send a signal to CH boiler in order to initialise the fire-up process.

  • Page 5: User Menu

    IV. USER MENU HOME PAGE During standard operation of the controller, graphic display shows the main page. Apart from the selected scheme, the display also shows: - operation mode (or type of alarm), - current time, - collector temperature, - current temperature of the heat tank, - temperature of all additional sensors depending on selected configuration.

  • Page 6: Main Menu - Block Diagram

    MAIN MENU – BLOCK DIAGRAM Due to multiple functions fulfilled by the controller, the menu is divided into Main menu and Service menu. Main menu includes basic controller options such as operation mode, time and date settings, language version etc. It is illustrated by the following block diagram.

  • Page 7: Clock

    The pump remains active until the pre-set temperature is reached (to define the pre-set temperature go to SERVICE MENU>Accumulation tank>Pre-set temperature) or until the difference between collector and tank temperature reaches solar pump deactivation delta : SERVICE MENU>Pumps>Solar pump deactivation delta (in this case the pump will be activated again when the collector temperature exceeds the tank temperature by the value of solar pump activation delta).

  • Page 8: Date

    2.3. DATE This submenu enables the user to set current date. Time and date settings are essential for energy counting function to operate correctly. 2.4. ETHERNET MODULE Internet module is a device enabling the user remote control of the solar heating system via the Internet at emodul.eu. The user controls the status of all heating system devices on the home computer screen and the operation of each device is presented in the form of animation.

  • Page 9: Backlight

    • Gains - This parameter enables the user to check how much energy was gained in different time periods: daily, weekly, monthly, annually and temporary. NOTE Statistics provide only approximate data to illustrate roughly the energy gain. • Collector overheats - this submenu shows a list of collector overheats (instances of too high temperature detected by the collector sensor).

  • Page 10: Service Menu - Block Diagram

    SERVICE MENU – BLOCK DIAGRAM Pre-set temperature Maximum temperature of tank 1 Tank hysteresis Minimum temperature of tank 1 Select scheme Cooling to pre-set temperature Holiday delta Accumulation tank Valve hysteresis* Pre-set temperature of tank 2* Maximum temperature of tank 2* Hysteresis of tank 2* Operation algorithm* Tank heating priority*...

  • Page 11: Schemat Instalacji

    3.1. SCHEMAT INSTALACJI To ensure effective operation of the solar heating system, it is necessary to select proper installation scheme (SERVICE MENU > INSTALLATION SCHEME) and configure additional options for the selected scheme. NOTE While selecting an installation scheme, in the place of the sensor temperature the screen displays the sensor number.
  • Page 12 SCHEME 3/17 – TWO COLLECTORS, TWO PUMPS Installation 3/17 supports: ➔ two collector pumps (the pumps operate independently in separate circuits), ➔ accumulation tank, ➔ two directions of collector positioning, ➔ additional peripherals. Installation sensors: ➔ two collector sensors, ➔ accumulation tank sensor.
  • Page 13 Additional parameters to be configured (additional submenu in service menu): • Installation options: heating activation delta, from hour... to hour..., energy return, energy return threshold, energy return hysteresis, energy return solar pump. SCHEME 6/17 – TWO TANKS, VALVE Installation 6/17 supports: ➔...
  • Page 14 SCHEME 8/17 – TWO TANKS – SEQUENCE Installation 8/17 supports: ➔ collector pump, ➔ tank 2 pump, ➔ tank 1 with lower and upper circuit ➔ tank 2, ➔ one direction of collector positioning, ➔ additional peripherals (no possibility of cooling with DHW pump) Installation sensors: ➔...
  • Page 15 SCHEME 10/17 – DUAL-FUNCTION BOILER Installation 10/17 supports: ➔ collector pump, ➔ valve switching to a two-state heating boiler ➔ accumulation tank with lower and upper circuit, ➔ dual-function boiler (heating the tank output), ➔ one direction of collector positioning, ➔...
  • Page 16 SCHEME 12/17 – TWO COLLECTORS, TWO PUMPS, TANK AND ADDITIONAL HEAT RECEIVER Installation 12/17 supports: ➔ two collector pumps (operating independently in separate circuits), ➔ accumulation tank with lower circuit, ➔ two directions of collector positioning, ➔ additional heat receiver, ➔...
  • Page 17 SCHEME 14/17 – HEATING CH RETURN Installation 14/17 supports: ➔ collector pump, ➔ valve switching between direct boiler circulation and through- tank circulation ➔ solar accumulation tank – with lower and upper circuit ➔ tank 2 ( heated by additional heat source e.g. CH boiler), ➔...

  • Page 18: Accmulation Tank

    SCHEME 16/17 Installation 16/17 supports: ➔ collector pump ➔ switching valve ➔ solar accumulation tank ➔ one direction of collector positioning ➔ additional peripherals. Installation sensors: ➔ collector sensor ➔ two sensors of accumulation tank ➔ valve sensor This system enables the user to control CH return valve to the accumulation tank. The valve switches from upper tank circulation to lower tank circulation Additional parameters to be configured: •...
  • Page 19 temperature is reached or until the collector temperature drops by the value of the alarm hysteresis (see: SERVICE MENU > Solar collector> Alarm hysteresis). • Minimum temperature of tank 1 – using this parameter, the user may declare the minimum acceptable temperature value which the tank can reach.

  • Page 20: Solar Collector

    b) parallel operation – the pumps operate independently of each other (according to their settings) and heat both tanks at the same time. • Tank heating priority - Option available only for scheme 9. Once this option has been selected, the pre-set tank temperature is given priority –...

  • Page 21: Pumps

    • Receiver activation temperature - This parameter concerns the activation of the tank-receiver pump. The pump is activated after the upper tank sensor reaches this value (provided that the temperature of the receiver is lower than the temperature of the upper tank sensor). If the temperature of the upper tank sensor drops below the activation temperature minus the heat receiver hysteresis, the pump is deactivated until the tank temperature increases.
  • Page 22 • Solar pump work minimum – this parameter is available only if regulated revolutions option is selected. Using this setting the user should define the pump minimum initial speed. • Solar pump work maximum – this parameter is available only if regulated revolutions option is selected. Using this setting the user should define the pump maximum operating speed (%).

  • Page 23: Peripherals

    Decrease It concerns PWM pump whose speed decreases when the signal increases. 3.6. PERIPHERALS The user may connect and configure the settings of an additional device. If there is no additional device, the user should select NONE (deactivate). Additional devices to choose from and examples of connections supporting all available installation schemes are presented below.
  • Page 24 • Heater - The heater is used to electrically heat the tank. The principle of operation is similar to that in the previous case but the heater should be connected by means of an additional contactor. The user defines the activation delta (the difference between the pre-set tank pre-temperature and current tank temperature) below which the controller activates the heater.

  • Page 25: Energy Counting

    • Cooling down with DHW pump - Option not available for schemes 5, 8, 11, 13, 15. This function is active beyond the time period, which means all the time. Sensor 4 is required for it to operate correctly (it should be installed in the external DHW tank).

  • Page 26: Alarm Sound

    • Energy return hysteresis - Option available only for schemes 5, 11. When the energy return threshold temperature is reached, the valve switches to the CH boiler return circulation. The valve will switch again after the tank cools down by the value of the energy return hysteresis. •...

  • Page 27: Protections

    VI. PROTECTIONS In order to ensure safe and failure-free operation, the controller is equipped with a range of protections. 1. Sensor protection. If one of the sensors is damaged, an acoustic signal is activated and the following symbol will appear on the right hand side of the display.

  • Page 28: Technical Data

    VIII. TECHNICAL DATA Before and during the heating season, EU-402N controller should be checked for condition of its cables. The user should also check if the controller is properly mounted and clean it if dusty or dirty. 230V ±10% / 50Hz Power supply Power consumption -30÷180˚C...
  • Page 29 Pictorial diagram - collectors: *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.
  • Page 30 PWM pump connection scheme:...
  • Page 31 EU DECLARATION OF CONFORMITY Hereby, we declare under our sole responsibility that EU-402N PWM 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...

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