OUMAN EH-203 User Manual
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OUMAN EH-203 User Manual

Heating regulator
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EH-203
Heating
regulator
OUMAN EH-203 is a new generation heating
regulator. Its versatility, intelligence and clarity
have made it an ideal heating regulator for all
kinds of water circulation heating systems.
In addition to heating control, EH-203 has a
number of other control and alarm functions for
facilities. Measurement information can be read,
settings and controls can be checked and
adjusted, and alarms can be received and
acknowledged remotely via a GSM
telephone's text messages or a web
browser. A GSM modem (optional
equipment) must be connected to
EH-203 to enable GSM use. An EH-net
web server (optional equipment) is needed
for web use.
Types of heating systems:
•
Radiator heating
•
Floor heating
•
Air conditioning preregulation
•
Hot water regulation
Types of heating production:
•
District heating exchangers
•
Boiler plants
•
Accumulators
•
District heating substations
Remote control options:
•
EH-net
Web based user interface
Internet/Intranet
•
GSM Control
Graphic user interface
(can be freely downloaded at: www.ouman.fi)
Traditional text message use with all GSM phones
www.ouman.fi
net
EH-

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Summary of Contents for OUMAN EH-203

  • Page 1 Its versatility, intelligence and clarity have made it an ideal heating regulator for all kinds of water circulation heating systems. In addition to heating control, EH-203 has a number of other control and alarm functions for facilities. Measurement information can be read,...
  • Page 2 FOR STARTERS Ouman EH-203 is a multifunctional heating controller which is adaptable to many different types of heating systems. Ouman EH-203 has the ability to control two heating circuits and one hot water control circuit simultane- ously. Your controller’s display changes depending on the connections and selected functions that are in use.

  • Page 3: Table Of Contents

    Maintenance guide Entering the maintenance mode These pages contain direc- Tuning values tions for maintenance per- Settings sons authorized by Ouman. Access to the regulator´s Trends maintenance mode is pre- Actuator selection vented by a maintenance Relay 1 control selection mode.
  • Page 4 3-point curve (factory setting): You can adjust the characteristic heating curve using outdoor temperature settings - 20°C, 0°C and +20°C. EH-203 prevents you from setting characteristic heating curves that are the wrong shape. It automatically proposes a correction. Press...
  • Page 5 Instructions for setting the curve OUMAN EH-203 When the outdoor temp. is: -20 °C, the supply water is +58 °C CURVE INTERPRETATION: 0 °C, the supply water is +41 °C +20 °C, the supply water is +18 °C H1 Curve:...
  • Page 6 SETTINGS OUMAN EH-203 In Ouman EH-203 the regulator is controlled by many different settings. Settings are selected according to sensor connections and relay control modes (e.g., is a relay controlling the oil burner or pump or is the relay temperature controlled see p. 26-27).
  • Page 7 Additional information about settings OUMAN EH-203 Settings: Factory Range: Explanation: Attention! settings: Pre-increase 0 °C 0...25 °C The automatic pre-increase in degrees which occurs after a reduced operation (nighttime drop) The pre-increase makes it °C possible to raise the room temperature faster to a nominal room Nominal temperature (day temp.) after a reduced operation.
  • Page 8 MEASUREMENTS OUMAN EH-203 The regulator can be connected to 14 different measurement data at the same time (11 NTC measurements + 3 digital inputs).Measurement data can also be read through the bus. Also the position of the voltage controlled (0...10V or 2...10V) actuator can be seen. Measurements 6, 9, 10, and 11 can...

  • Page 9: H1 Supply

    MEASUREMENTS OUMAN EH-203 Additional information Strip Measurement Information om mätning: Measurement Attention! connector information: Out temp. Outdoor temperature -50... +50 Can be read through the net. H1 Supply Supply water temperature in regulating circuit H1 0...+130 H1 Room Room temp. in regulating circuit H1 (room comp.) -10...
  • Page 10 SUPPLY WATER INFORMATION OUMAN EH-203 In this mode we can see which factors determined by the regulator make up the supply water temperature at the time of inspection. The basis for this is the supply water temperature at the present outdoor H2 Automatic temperature according to the characteristic heating curve.

  • Page 11: Settings

    Measurement information from the district heating energy meter can be read to the Ouman EH-203 by using EMR-200 read head (optional equipment). Ouman EH-203 has a connector for the read head. The function is acti- vated in the controller’s special maintenance menu (see Energy meter p. 35).

  • Page 12: Operating Modes

    OPERATING MODES OUMAN EH-203 Each regulating circuit can be controlled with the operating modes mentioned below. The factory set automatic regulation is a normal regulating situation in which the clock controlled temperature drops are also possible. The selected operating mode always appears on the basic display on the top line.

  • Page 13: Clock Functions

    CLOCK FUNCTIONS Setting the time OUMAN EH-203 The Ouman EH-203 regulator’s clock registers summer time and standard time changes and leap years. The battery lasts approx. 10 years. Setting the time happens in the following manner H2 Automatic OPERATING INSTRUCTION:...
  • Page 14 OUMAN EH-203 Clock programs - browsing, adding, deleting With the freely programmable 24 hour/7 day clock you can: H2 Automatic 1. Drop the temp. for certain lengths of time (heat. circuits H1 and H2) H1 Automatic 2. Increase the domestic hot water temp. (anti-bacteria function) Outdoor -15°C...
  • Page 15 OUMAN EH-203 Clock functions; relay control Relays can control many different functions, e.g., sauna stoves, locking doors etc. Relay clock functions are taken into use and H2 Automatic labeled according to use in the relay control mode. (see p. 26 and...

  • Page 16: Type Information

    OUMAN EH-203 LANGUAGE The Ouman EH-203 regulator is in two languages. The regulator has the most commonly used languages, Finnish - Swedish, English-Estonian, Eng- H1 Automatic lish-Russian, English-Polski and English-Lett. The language of the regulator Outdoor -15°C SupplyTemp52°C can be changed in the following manner.
  • Page 17 START FUNKTION - OUMAN EH-203 Regulat. mode sel. In the start function the regulator detects the sensors that are at- tached to it. The regulator takes the regulating circuits (H1, H2 and HW) into use according to the supply water sensors. The assump- tion is that there is a basic regulator in each regulating circuit.

  • Page 18: Alarms

    OUMAN EH-203 EH-203 gives as alarm when a situation deviates from the norm. In the event of an alarm, the regulator gives an alarm and a message appears on the display. In addition, the alarm relay contact closes. Note! Although the reason of the alarm is no more valid, the last alarm will remain into display intil it is acknowledged.

  • Page 19: Gsm-Functions

    OUMAN EH-203 When a GSM modem is connected to EH-203, a GSM telephone can be used to communicate with the control- ler via text messages.(installation p. 39 - 40). Almost all of the user level functions that are mentioned in this manual can be carried out using a GSM phone.
  • Page 20 The maintenance person’s maintenance guide begins here (p. 21 - 48).

  • Page 21: Entering The Maintenance Mode

    ENTERING THE MAINTEN. MODE OUMAN EH-203 Access to the Ouman EH-203 maintenance mode is prevented by user rights. Only those persons who have a maintenance code have access to the maintenance mode. There are typical tuning values and settings in the maintenance mode which the maintenance person needs in conjunction with installation.

  • Page 22: Tuning Values

    TUNING VALUES OUMAN EH-203 EH 203 has three PID regulators. The tuning values may have to be adjusted, for example, when the district heating exchanger is installed if the setting wavers with the original factory setting. Anticipate and quick run can be set in the HW regulating circuit in addition to PID.

  • Page 23: Settings

    SETTINGS OUMAN EH-203 Ouman EH-203 has three types of settings: a) user level settings which the user can adjust (p. 6-7) b) maintenance mode settings which the maintenance person may have to adjust c) special maintenance mode settings which seldom have to be ad- justed (p.

  • Page 24: Trends

    TRENDS OUMAN EH-203 It is possible to follow supply water temperature changes on the trend dis- play with the graphic depictor. You can decide yourself how often the tem- perature is measured. The factory set sampling interval is 1 second.

  • Page 25: Actuator Selection

    ACTUATOR SELECTION OUMAN EH-203 The control mode for each regulating circuit actuator is selected in actuator selection. Options are either 24 VAC 3-point control or DC voltage control (0...10V or 2...10V). If relays 1 and 2 are free, they can be utilized to implement one 230VAC 3-point control.

  • Page 26: Relay 1 Control Selection

    RELAY 1 CONTROL SELECTION OUMAN EH-203 EH-203 has two 230VAC/6A relays. Relay 1 is a break before make contact relay and relay 2 is an on/off relay. The relays can be used for many different purposes. If the relay has been selected for time control use, it can be labeled according...
  • Page 27 RELAY 2 CONTROL SELECTION OUMAN EH-203 EH-203 has two 230VAC/6A relays for relay controls; relay 1 is a break before make contact relay and relay 2 is an on/off relay. The following functions can be implemented with relay 2: • Parallel circulation pump control •...

  • Page 28: Restore Factory Settings

    RESTORING SETTING OUMAN EH-203 Restoring settings: 1. The regulator restores factory settings to the charasteristic heating curve settings. 2. Eliminates clock functions 3. Restores user and maintenance level settings 4. Selects automatic control for the operating mode 5. Selects the basic regulator for the regulator type.

  • Page 29: Settings

    SETTINGS OUMAN EH-203 I Ouman EH-203 värmeregulator kan användaren själv ställa in största delen av börvärdena (se börvärden s. 6-7) En del av inställ- ningsvärdena som styr regulatorns funktion kan ställas in i ser- viceläget (se s. 23) och en del i specialserviceläget. I specialservice Directions for entering the mainte- kan man ställa in värden, som mera sällan behövs.

  • Page 30: Measurement 6 Setting

    MEASUREMENT 6 SETTING OUMAN EH-203 Measurement 6 can be used as a free temperature measurement, room tem- perature measurement, 0-10V transmitter measurement or measurement of the pressure in the heating or ventilation network. It is factory set as a free temperature measurement labelled “Cold water”.
  • Page 31 OUMAN EH-203 Setting the measurement range for the network pressure and con- necting the pressure measurement emitter to the EH-203 regulator. Connection 1. Connect the pressure sensor using a resistor The controller’s measurement channel 6 can have a 10V transmitter volt- age but can only measure 0…5V.

  • Page 32: Digital Inputs 1, 2 And

    DIGITAL INPUTS 1, 2, 3 OUMAN EH-203 EH-203 has three digital inputs. A digital input can be connected to contact information or pulse information. Contact information can be used to receive an alarm, e.g., blower overcurrent protection alarm. Alarms can be labelled using the text editor according to their cause. Alarms can be transferred to, e.g., A GSM phone as text messages.
  • Page 33 OUMAN EH-203 In display: Explanation Alarm use: Alarm switch information. When the switch is closed, an alarm goes off. You can use the text editor to label the alarm, e.g., Thermal relayl! (see p. 8). In the event of an alarm, the regulator sounds the alarm and indicates on the display from which digital input the alarm came from.
  • Page 34 “Heating curve”, see p. 4. 3-point curve: You can adjust the heating curve with outdoor tem- perature values 20°C, 0°C and +20°C. EH-203 pre- Supply water vents you from making a heating curve of the wrong shape. It automatically proposes a correction. If a 3-point curve has been selected it is possible to take self-learning into use (see p.

  • Page 35: Labelling Control Circuits

    LABELLING CONTROL CIRCUITS OUMAN EH-203 After labelling control circuits, the top row of the controller’s basic display Hint! Hint! Label the control will alternately display the control mode and name of the control circuit. circuit according to its target area.

  • Page 36: Energy Meter

    ENERGY METER OUMAN EH-203 Take into use: 1. District heating energy consumption reading from an energy meter (see p. 11). 2. Automatic reporting from an energy meter by text message. If using automatic reporting, set the day when the report is to be sent and the GSM numbers that the report is sent to.

  • Page 37: Net Connections

    LON-200 card) bus adapter card (optional equipment) is installed. Detailed instructions for installing and initializing the bus adapter card are provided. Connect the EH-203 to a MODBUS field bus with MODBUS-200-DIN adapter card: (120 ohm terminating resistors are connected to...
  • Page 38 NET MEASUREMENT OUMAN EH-203 Ouman EH-203 has an LON-200, RS-485 and MODBUS-200 bus adapter cards as an optional equipment. In this special maintenance mode you can select which measurement informati is to be read from the net. If you selected to read wind or sun measurements from the net, you must set the compensa- tion area in this mode.

  • Page 39: Text Message Connection Via The Modem

    The power is on but the modem is not ready to use. Inspect the following: 1. EH-203 has the same PIN code as the GSM modem’s SIM card PIN code. 2. Perform the start-up function. To start-up, move to Start function.
  • Page 40 EH-485 bus adapter card and a modem can be con- nected to the RS-485 field bus through the master device, EH-686. An EH- 485 bus adapter card must be installed in the controller so that the EH-203 controller can be connected to the RS-485 field bus. (see installation and initialization guide in the instructions that come with the EH-485 card).

  • Page 41: District Heating's Return Water Temperature Limiting

    DISTRICT HEATING’S RETURN OUMAN EH-203 WATER TEMPERATURE LIMITING If you need to ensure that the water returning to the district heating centre is not too hot, set maximum return water temperatures for different outdoor temperatures. If the return water temperature ex- ceeds the set temperature limits, the controller will drop the return water temperature.

  • Page 42: Data Link

    DATA LINK OUMAN EH-203 It is easy to connect the EH-203 controller to a computer using a CC-PCDEV1 cable (optional equipment). Connect the jump cable directly to the computer’s COM-port and connect the wires to the controller’s bus con- nection strip connectors when the controller is unplugged. It is also pos- sible to make the connection using a DATAJAMAK cable.

  • Page 43: Using The Browser

    If you have a broad band internet connection, just plug in the EH-net server to connect to the internet. By using the browser it is possible to communicate with the EH-203 control- ler from any pc connected to the internet. Check your computer display to see, e.g., controller settings, measurements and alarms.

  • Page 44: Installation And Maintenance Guide

    INSTALLATION AND MAINTENANCE GUIDE OUMAN EH-203 EH-203 is fastened to its mounting base with three screws (two mounting Changing the fuse: points under the cover in the connection space and one in the installation bracket. Cables can be brought for the regulator from above (standard factory deliv- ery) or from below.
  • Page 45 Relay control 2x1.5 N Relay 2 Re2 (230VAC, 6(1)A) Relay control 3x1.5 N Relay 1 Re1 (230VAC, 6(1)A) Note! Connect a protective cable if an LON card is installed in the EH-203 2x1.5 S Distribution center power supply 230 VAC...
  • Page 46 230 VAC EMR-200 EH-203 has a plug connection for the energy meter read head. When a district heating energy meter is connected to the EH-203 controller using an EMR-200 energy meter read head, the district heating meter measurement information can be read from the EH-203 controller.
  • Page 47 INDEX OUMAN EH-203 3-point charac. heating curve 4,5,34 Heating curve setting 4, 5 Relay controls 15, 26, 27 5-point charac. heating curve 4,5,34 Heating network pressure alarm 31 Relay controls labeling 26, 27 Heating pump control 26, 27 Restoring settings...

  • Page 48: Optional Equipment

    OUMAN EH-203 Technical information Operat. voltage: 230 VAC, 50 Hz, 0.20 A Information transfer Standard equipment: EIA-232C connection: Optional equipment:RS-485, Casing: PC/ABS MODBUS or LON Protection class: IP 41 Remote reading of EMR-200 DH energy meter: Outputs: 3 actuator control outputs...

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