EUROSTER UNI3 User Manual
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EUROSTER UNI3 User Manual

Weather-based controller for the heating system
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EUROSTER UNI3 – USER MANUAL
Weather-based controller for the heating system
MANUFACTURER: P.H.P.U. AS, Chumiętki 4, 63-840 Krobia, Poland
In order to take full advantage of the controller capabilities and ensure proper operation of the
system, please read this user manual carefully.
1. APPLICATION
UNI3 is a universal controller designed to control the heating system equipped with:
three independent CH heating zones with mixing valves (e.g. for floor heating, radiator
heating)
main heating source – with its own controller, e.g. gas-fired boiler
additional heating source – e.g. solid fuel boiler, fireplace
1. Outdoor temperature sensor
2. Alarm indicator
3. Main boiler switch
4. Zone 1 room thermostat
5. Zone 2 room thermostat
6. Zone 3 room thermostat
7. Zone 3 temperature sensor
8. Zone 3 pump
9. Zone 3 mixer
ATTENTION! This is a reference drawing which does not contain all components of
the system.
ATTENTION! A hydraulic system must enable independent operation of the main and
EUROSTER UNI3
Manual version: 14.04.2014
10. Zone 2 temperature sensor
11. Zone 2 pump
12. Zone 2 mixer
13. Zone 1 temperature sensor
14. Zone 1 pump
15. Zone 1 mixer
16. Supply temperature sensor for the zones
17. Temperature sensor of an additional
heating source
1

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Summary of Contents for EUROSTER UNI3

  • Page 1 Manual version: 14.04.2014 1. APPLICATION UNI3 is a universal controller designed to control the heating system equipped with: three independent CH heating zones with mixing valves (e.g. for floor heating, radiator  heating) main heating source –...

  • Page 2: User Interface

     adjustable shutdown temperature  alarm indication  2.3. Communication possibility to combine several UNI3 and UNI2 controllers  common weather sensor  common supply temperature sensor  common (one) boiler control output ...
  • Page 3 EUROSTER UNI3 – USER MANUAL Example of screen with description is shown below. The symbols shown in the controller have the following meaning: pump operation mixer operation heating switched on by a room thermostat Anti-Stop algorithm active an error occurs...
  • Page 4 EUROSTER UNI3 – USER MANUAL 3.5. Setting screens Selected adjustable parameters with comments are listed below. 3.5.1. User settings CH1 zone  schedule It can be used to switch off the zone for selected time on selected days of the week.
  • Page 5 EUROSTER UNI3 – USER MANUAL Determines the mixer response time to changes in the zone temperature. An excessive value may cause frequent cycling of the mixer, whereas the insufficient value may cause slowness in achieving the preset temperature. mixer hysteresis If the measured temperature of the zone differs from the preset one by half of the value of the preset hysteresis, then the mixer position is not corrected.
  • Page 6 EUROSTER UNI3 – USER MANUAL excess of supply  The excess of supply parameter determines by how much the supply temperature should exceed the temperature calculated by the controller for zones. It allows the user to set the proper temperature at the boiler (temperature item required for supply).

  • Page 7: Installation

    EUROSTER UNI3 – USER MANUAL Device Description addresses Proper Physical address of the particular controller (identifier). Range from 1 to 247. For the proper functioning each controller in the network must have a unique address assigned. Supply sensor Identifies a controller that feeds a supply temperature. It may be a proper address or an address of another controller.
  • Page 8 (NO) contact. It is recommended to use Euroster devices. ATTENTION! Euroster UNI3 controller and a heat emitting device are connected to the “Boiler” output and must be powered from the same phase of the power system.
  • Page 9 4.2. Communication 4.2.1. RS-485 connection UNI3 controller enables communication with use of RS-485 interface. The connection should be made with use of a shielded twisted pair in bus topology. A, B and GND terminals of the controller should be connected with A and B cables of the bus and a shield (figure).

  • Page 10: Controller Operation

    5.1. Supply temperature UNI3 controller does not affect the temperature at the boiler (system supply). However, it calculates it and shows it on the display, and the user should ensure that the supply temperature exceeds the temperature currently required by the controller (although does not exceed the alarm temperature).
  • Page 11 EUROSTER UNI3 – USER MANUAL 5.5. Alarm output Alarm output used connect additional, external alarm indicator. In case of sensor damage, zone overheating or other errors, voltage is supplied to the alarm output. ATTENTION! Alarm indicator must be adjusted to the network voltage of 230 V.

  • Page 12: Technical Data

    EUROSTER UNI3 – USER MANUAL 7. DIMENSIONS 8. TECHNICAL DATA Supply: 230 V 50 Hz Maximum power consumption: 4 W Maximum output load: 100 W (each output) Temperature control range: 15°C...90°C Temperature measurement range: -30°C...120°C Temperature control and reading accuracy: 1°C Operation temperature range: 0...40°C...

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