OUMAN A203 User Manual
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OUMAN A203 User Manual

For three circuits
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Saving energy, creating comfort
USER MANUAL
USER MANUAL
Controller for three circuits
- control for 2 heating circuits
- 1 domestic hot water control
A203
XM1578: Version 1.0->

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Summary of Contents for OUMAN A203

  • Page 1 USER MANUAL USER MANUAL A203 Controller for three circuits - control for 2 heating circuits - 1 domestic hot water control XM1578: Version 1.0-> Saving energy, creating comfort...
  • Page 2 The user manual can also be downloaded from www.ouman.fi /en/document-bank/. The A203 is a heating controller for 3 circuits (two heating circuits and one hot water circuit). Wiring and configurating selections define what is seen on the display screen.

  • Page 3: Table Of Contents

    Contents 1 Display menus 1.1 Basic view 1.2 Alarm notice 1.3 Menu structure 2 Inputs and outputs 3 Regulation of supply water in heating circuits 3.1 Info 3.2 Heating curve 3.3 Setting values 3.4 Control mode 3.5 Time programs 3.5.1 Weekly schedule 3.5.2 Exception schedule 3.5.3 Special days 3.5.4 Temp.

  • Page 4: Display Menus

    1 Display menus Different levels of display menus are used to make the A203 clear and easy to use. The basic view shows the most impor- tant information for monitoring operation of the unit. Favour- ite views that can be changed by users enable them to easily access desired menus.

  • Page 5: Alarm Notice

    Automatic The symbol indicates that all alarms are disabled. Ouman A203 can generate alarms for several different reasons. In the event of an alarm, an alarm window pops up showing de- tailed alarm information and a beeping alarm signal goes on, if the alarm sound is not turned off (see page 27).

  • Page 6: Menu Structure

    1.3 Menu structure In the user manual Page 7 Main menu > Inputs and outputs IInputs and outputs > H1 Control circuit Home/Away mode Home > H2 Control circuit > ---------------------------------------------------- > DHW Domestic hot water control Outdoor temp. -18.2 °C Relay 5 control H1 Supply water 35.1 °C...

  • Page 7: Inputs And Outputs

    2 Inputs and outputs You can see the inputs and outputs of A203 which are config- Main menu ured in use. Configuration of the inputs and outputs is done in Inputs and outputs > H1 Control circuit > service menu (see p. 37-40). General measurements are temper- H2 Control circuit >...
  • Page 8 Measurement Range Measurement information ----OUTPUTS----- Actuator control 0..100 % Current actuator 1 control Actuator control 2 0..100 % Current actuator 2 control. If series driving is in use, actuator 1 will first open the valve and the controller will then start up actuator 2. P2.1 (2.2, P3.1, P3.2) Off/On Pump control status.

  • Page 9: Regulation Of Supply Water In Heating Circuits

    Bus compensation effect The amount of required compensation is determined by an external device to the A203, for example from bus compensation to weather compensation. Min limit effect Supply water temperature increase due to the minimum limit. Max limit effect Supply water temperature drop due to the maximum limit.
  • Page 10 Factors effecting the room Explanation temperature ----- ROOM TEMPERATURE -------------- Room temperature setting Room temperature setting set by the user. Time program effect on room temp. Room temperature drop by weekly or exception schedule. Away -control effect Home/Away mode for reduction of room temperature. The trigger can come from the controller (see Inputs and outputs->...

  • Page 11: Heating Curve

    H1 (H2) Control circuit-> Heating curve The supply water temperature for different outdoor tempera- H1 Control circuit tures is set with heating curve. With A203 the heating Supply water information > curve can be adjusted exactly to meet the needs of the facility Measurements >...
  • Page 12 Suppl.w. 3 = 37°C/ Outd.t. 4 = 10°C/ Suppl.w. 4 = 28°C/ A203 will make the requested changes and send a new mes- H1 Heating curve Suppl.w. (+20) = 18 °C sage showing the changes made.

  • Page 13: Setting Values

    3.3 Setting values The regulator has two types of setting values: those that are al- H1 Control circuit ways visible and those than can only be changed using a service Info > Heating curve > code (see page 41). Setting values >...

  • Page 14: Control Mode

    Manual Manual mech. control Control mode Explanation Automatic A203 controls the supply water temperature automatically according the heating demand and time programs. Continuous normal temp. Forced normal heating. All time programs are by-passed. Continuous temp. drop Forced temperature drop. All time programs are by-passed.w...

  • Page 15: Time Programs

    3.5 Time programs H1 (H2) Control circuit-> Time programs Weekly schedules, special days and exception schedules can be H1 Control circuit added to heating regulation in the A203. You can lower tempera- Heating curve > Setting values > tures desired times by using these time programs.

  • Page 16: Exception Schedule

    3.5.2 Exception schedule H1 (H2) Control circuit-> Time programs -> Exception schedule You can easily make changes that differ from normal routine Time use by using the exception schedule. The date, time and mode Add new > to which heating will be changed in the period in question are entered in the exception schedule.

  • Page 17: Domestic Hot Water Control

    4 Domestic hot water control The A203 keeps the temperature of domestic hot water at the Main menu designated value. Because of the danger of bacteria, it is recom- H1 Control circuit > H2 Control circuit > mended that the domestic hot water temperature is not perma- DHW Control circuit >...
  • Page 18 Manual Manual mechanical when a sensor malfunctions. Automatic A203 maintains the temperature of domestic hot water at the setting value set by the user. Manual The desired position of the valve is set with the setting value ”Actuator Manual position.”...

  • Page 19: Time Programs

    4.1 Time programs DHW Control circuit-> Time programs You can change the supply water temperature with time pro- DHW Control circuit gram. You can define in Supply water settings how much the Info > > Setting values time program deflects the temperature from the normal supply >...
  • Page 20 Exception schedule DHW Domestic hot water control -> Time programs -> Exception schedule Time You can easily make changes that differ from normal routine Add new > use by using the exception schedule. The date, time and mode to which domestic hot water temperature will be changed in the period in question are entered in the exception schedule.

  • Page 21: Relay 5 And Relay 6 Control

    Temp. level according to time program Controller shows, what is the desired heat level, at the moment according to the time program. You can also force control to the desired temperature level by pressing OK and selecting manual control (enter the service code). Present value Explanation Normal...
  • Page 22 Relay 5 control Heating thermostat and time control: The relay is controlled ac- Function Heat therm.. & time ctrl (R5) cording to the time program and the temperature. The relay is on Setting value 5.0 °C > when the temperature is below the setting value and the time pro- Time program >...

  • Page 23: Trends

    6 Trends A203 saves automatically trend data from measurements. Trends Outdoor temp. > ---------------------------------------------------- When you press OK on the measurement in Trend menu you can H1 Supply water > review the trend log and change the sampling interval. H1 Return water temperature >...

  • Page 24: Alarms

    H1 suuply water deviation alarm Alarm signal can be muted by pressing Esc key. It shoud be noted PR 1 GROUP 1 A203.G101.0,TE41.DA1 that the alarms remain unacknowledged. You can find both H1 Supply water temp. =10.2 °C active alarms and Alarm history in the Alarm menu.
  • Page 25 A203 requests confirmation before deleting alarm history. Alarm receivers Alarm receivers A GSM modem can be connected to the A203 for alarm sending a text Alarm receivers message to the alarm team. The alarms are sent to correct team ac- Team 1 >...
  • Page 26 Routing schedule Alarms > Routing schedule A203 default alarm groups are: • Group 1: Urgent alarm that should always be immediately Routing schedule routed. Group 1 Weekly schedule > Group 1 Alarm routing now Team 1 > • Group 2: Malfunction alarms than can be frouted during busi- Group 2 Weekly schedule >...

  • Page 27: System Settings

    Enter hours 19:44 routing. The A203 clock takes daylight savings and leap years into account automatically. The clock has a backup for power outages hh:mm lasting about two days.

  • Page 28: Text Message (Sms) Settings

    The controller automatically retrieves the message center number (the number is not displayed). Test at communication works. SMS PIN: If the SIM card has PIN inquiry in use, A203 device asks you to enter the PIN. Entering the code: •...

  • Page 29: Network Settings

    Change only IP address manually provided by the network ad- ministrator. Example. There is an Ouman 4G solution to which the A203 is connected. The network uses a DHCP service that shares addresses from 10.200.100 to 10.20.149. The range 10.200.1.1 to 10.200.1.99 is reserved for fixed addresses and the IP address 10.200.1.1 is reserved for the A203 from this...
  • Page 30 Modbus TCP/IP gateway ->Modbus RTU master (A1,B1): It is possible to connect a Modbus / RTU fieldbus to the A203. The TCP-port number of the Modbus RTU master (A1,B1) is default 504. This port number acts as a gateway from Modbus/TCP side to Modbus RTU bus of the A203.
  • Page 31 System settings > Network settings > Access settings OUMAN ACCESS – service enables you to make a remote connec- Network settings tion (useful with Ounet use) to A203 device from internet without Modbus RTU master > Modbus RTU slave >...

  • Page 32: Display Settings

    You can read A203 device information and change settings. In use You can read A203 device information but you can not change settings without entering the lock code. The factory setting of lock code is 0000. If you take lock code into use, change the code for security reasons.

  • Page 33: Connection Guide

    Relay control R5 and R6 (=Heating, cooling or smeting thermostat or time program controlled relay). Relays with normally open contact max 230 Vac, 6 A Detachable strip connector shield A203 controller cable 2x0,8 M1: Outdoor temperature sensor 2x0,8 M2: H1 Supply water sensor...
  • Page 34 Alternative connections M4, M7, M12, M13 and M14 M4: H1 Room temperature measurement M4: Temperature measurement (H1 Heat exchanger DH Return water sensor) TMR or 2x0,8 2x0,8 TMW/TMS 0-10V transm. M7: H2 Room temperature measurement M7: Temperature measurement (H2 Heat exchanger DH Return water sensor) TMR or 2x0,8 2x0,8...
  • Page 35 Analog outputs Triac controls Actuators control of H1 Heating circuit H1 Voltage controlled actuator Y1 output 3-point controlled actuator 0-10V DC-ctri 3x0,8 Open 3x0,8 24 VAC 24VAC *) Connect 24 VAC to strip connector 42, if it is selected that Manual mechanical con- Closed trol is “available”...
  • Page 36 The bus cable’s shield (FE) is connected to the BG Slave 120 Ω connector of the A203. In the master device the device shield can be left disconnected or be connected to a potential free contact. A 120 Ω terminating resistor is connected to both ends of the bus.

  • Page 37: Connections And Configuration

    9.1 Connections and configuration The user interface is grouped according to the control circuits Connections and configuration and the functions. M1: Outdoor temp. In use > M2: H1 Supply water In use > When you press OK on the input/output, opens a menu, where M3: H1 Return water Not in use >...
  • Page 38 Alternative measurement Inputs Attention options Name: Meas. M12; other specify ____________________________________ Meas. 12 Temperature measurement > Pressure switch Pressure switch: Pressure transmitter: Digital input type: Pressure measurement 1: Automatic/manual Pressure transmitter V Measuring area _____(10.0 bar) Pressure transmitter mA normally open Measurement adjustment ______ (0.0) normally closed Name: (Pressure measurement 1) , other...
  • Page 39 ACTUATOR CONTROLS Name Output Actuator selection Running time / factory setting (setting range) Running time open ____ 150 s (10...500 s) H1 Actuator control 0-10 V / 2-10 V / Running time close ____ 150 s (10...500 s) 10-0 V / 10-2 V Manual mech.
  • Page 40 SUM ALARM Relay Meas. controlling the relay/Name of Control mode Setting values (default) (NO, C) control R6 (83, 84) Sum alarm Class 1 is for alarms classified as urgent 1-class that should always be immediately for- 2-class warded. These include freezing risk alarms, 1- or 2-class pump alarms or sensor fault in supply wa- ter.

  • Page 41: Service Settings

    10 Service settings Service mode includes all settings of the controller. Some of the settings can be found also from “setting” menus of the heating circuits (H1, H2, DHW). CONTROL CIRCUIT SETTINGS Factory Setting Range Explanation setting Control circuit In use In use/ Control circuits are already taken into use in start-up wizard.
  • Page 42 Summer function Pump summer stop In use In use/ If A203 controls also the pump, the pump can be stopped while the Not in summer function mode is active. Summer function 19.0 10 ... 35 Summer function outdoor temperature limit.
  • Page 43 Explanation setting Not in In use/ Outdoor temp. forecast A203 uses temperature forecasts from bus for continousing. Not in use Valve summer shut-down In use In use/ The setting is used to select whether or not the regulation valve is closed Not in use when the summer function is in use.
  • Page 44 Factory Setting Range Explanation setting Return water compensation Return water compensation 0 ... 7.0 If the return water temperature decreases below the low limit ratio (freeze risk), the supply water temperature will be increased. The amount of increase is the amount of undershoot (low limit - re- turn water temperature) multiplied by the compensation ratio.
  • Page 45 Alarm setting values Alarms Enable DIsable/ It’s possible to disable all alarms of A203. This can be done e.g. in Enable the cases when the measurements are configured before any sen- sors are linked to controller. When alarms are disabled, a symbol is shown in the start menu.
  • Page 46 Factory Setting Range Explanation setting Tuning values H1 and H2 Tuning values: P-area 2...600 °C Supply water temperature change at which the actuator runs the valve at 100%. E. g. If the supply water temperature changes 10 °C and the P area is 200 °C the position of the actuator changes 5 % (10/200 x 100 % = 5 %).

  • Page 47: Restore Settings And Updates

    Go to the Device management tab. Under SW update, click SELECT FILE. Select the A203 x.x.x zip file and press Open. The file name will appear in the interface as well as the “Update” button. Select “Update”. The update may take 5-10 minutes.

  • Page 48: Remote Control Options

    H2 Setting values ture setting” if room temperature measurement is enabled.. You can change the setting values by modifeing the text message and sending it back to A203. The controller confirms the setting change by replying with new settings. H1 Control mode In the reply message, the current control mode will have a star next to it.

  • Page 49: Web User Interface

    12.2 WEB UI A203 includes an internal web server. You can access it using a browser. As all functions have been tested using Google Chrome, we recommend that you also use Chrome. You can use the browser on a PC, smartphone, tablet or a browser touch screen purchased from Ouman.

  • Page 50: Optional Accessories

    The card can be removed from the bracket using a flat tool, such as a flat- blade screwdriver. The PIN code of the A203 is set to the same code as the SIM card. C01A In floor heating solutions it is important to make sure that exessively hot water which could damage structures or surfaces doesn’t ever get...

  • Page 51: Index

    Index 5-point curve 11-12 General alarms 38, 45 Sensor fault alarms 24 General compensation 44 Setting values 13, 17, 41-46 Access 29, 31 General measurements 7, 34, 37-38 Signal strength 28 Active alarms 4, 25 GSM-modem 28, 50 SIM card 28, 49 Actuator running time 39, 46 SMS settings 28 Actuator type selection 39...

  • Page 52: Tecnical Information

    Technical information Load user manual: ouman.fi/en/documents/ Dimensions width 213,5 mm, height 93,3 mm, depth 96,8 mm Weight 0.7 kg Protection class IP 20 Operating temperature 0 ºC…+40 ºC Storing temperature -20 ºC…+70 ºC Power supply Operating voltage 24 Vac, 50 Hz (22 Vac - 33 Vac)

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