Tech Controllers EU-401N PWM User Manual
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Tech Controllers EU-401N PWM User Manual

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Summary of Contents for Tech Controllers EU-401N PWM

  • Page 1 Tech EU-401N PWM - 1 -...
  • Page 2 EU – 401N User’s manual v 1.1.3 I. 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 3: Principle Of Operation

    Tech EU-401N 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 4 EU – 401N User’s manual v 1.1.3 III. User menu III.a) Home page During standard operation of the controller, the 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...
  • Page 5 Tech III.b) Main menu – block diagram Due to multiple functions fulfilled by the controller, the menu is divided into Main menu and Service menu. The main menu includes basic controller options such as operation mode, time and date settings, language version etc.
  • Page 6 EU – 401N User’s manual v 1.1.3 Collector defrosting This function enables the user to activate the collector pump manually in order to cause the snow deposited on the solar collector to melt. After this function has been activated, the mode is active for a user-defined period of time.
  • Page 7 Tech III.f) Ethernet module NOTE This type of control is available only after purchasing and connecting an additional controlling module ST-505 which is not included in the standard controller set. Internet module is a device enabling the user remote control of the solar heating system via the Internet at emodul.eu.

  • Page 8: Service Menu

    EU – 401N User’s manual v 1.1.3 IV. Collector overheats This submenu shows a list of collector overheats (instances of too high temperature detected by the collector sensor). The user may view: - date of the overheat incident - time - duration - reading from collector sensor Power failures...
  • Page 9 Tech Pre-set temperature Maximum temperature of tank 1 Tank hysteresis Accumulation tank Minimum temperature of tank 1 Cooling to pre-set temperature Holiday delta Overheat temperature Minimum heating temperature Solar collector Alarm hysteresis Defrosting time Anti-freeze temperature Regulated revolutions Maximum collector temperature Solar pump deactivation delta Solar pump activation delta Pumps...
  • Page 10 EU – 401N User’s manual v 1.1.3 IV.a) Accumulation tank This menu enables the user to adjust all the parameters related to the tank (heat accumulator). IV.a.1.) Pre-set temperature This function is used to adjust the pre-set tank temperature. After reaching this temperature the collector pump is deactivated.
  • Page 11 Tech IV.b.3) Anti-freeze temperature Due to the different freezing temperatures of the liquid in the solar installation anti-freeze temperature was introduced. This parameter determines the minimum safe temperature at which glycol liquid does not freeze (temperature measured at the collector). In case of a significant drop in the collector temperature (to the value of anti-freeze temperature), the pump is activated and operates continuously until the collector reaches safe temperature.
  • Page 12 EU – 401N User’s manual v 1.1.3 Example: If the gear coefficient value is 3, each 3°C difference between the tank temperature and the collector temperature results in 10% increase in pump speed. The table below contains examples of the coefficient values and its results. Pump working Gear coefficient 3 Gear coefficient 4 Gear coefficient 5 Gear coefficient 6...
  • Page 13 Tech IV.c.11) PLT (pellet) boiler fire-up This option is used to set the voltage-free signal to fire up the pellet boiler. The user defines activation delta - the difference between the pre-set tank temperature and the current tank temperature at which the controller sends a signal to fire up the boiler.
  • Page 14 EU – 401N User’s manual v 1.1.3 IV.c.12) 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 15 Tech IV.e.3) Type of medium The user chooses the agent used: ethylene glycol, propylene glycol or water. IV.e.4) Glycol solution The user specifies glycol concentration in water (given in percent. IV.e.5) Calibration This function allows the user to calibrate the temperature difference between the sensors. The temperature is measured in the place where the temperature sensor is installed.

  • Page 16: Software Update

    EU – 401N User’s manual v 1.1.3 WARNING Higher amperage fuse should not be used as it may lead to controller damage. V. Software update NOTE Software update shall be conducted only by a qualified fitter. After the software has been updated, it is not possible to restore previous settings.
  • Page 17 Tech 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. - 17 -...
  • Page 18 EU – 401N User’s manual v 1.1.3 PWM pump connection scheme: - 18 -...

  • Page 19: Eu Declaration Of Conformity

    Tech EU DECLARATION OF CONFORMITY Hereby, we declare under our sole responsibility that EU-401N 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 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 20 EU – 401N User’s manual v 1.1.3 - 20 -...

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