OUMAN S203 User manual

Saving energy, creating comfort
Controller for three circuits
- control for 2 heating circuits
- 1 domestic hot water control
USER MANUAL
S203
XM315G: Version 3.0->

2
Turn the control knob
to navigate in the menu.
A maximum of ve views can be displayed
with the favourite views key. Default settings
for favourite views show menus for each cir-
cuit, which include all default settings that can
be changed by the user as well as information
about measurements and the regulator’s op-
eration.
Press the control knobto
enter the menu and ac-
cept the changes.
Control knob and OK
Cancel button
Basic view
Holding the key down for an ex-
tended period of time returns the
regulator to its basic mode. The
display shows the basic view, the
background light of the display
dims and the keyboard locks if the
locking function is in use.

part of user manual. The issues related to service mode are at the end of it. In addition there are issues,
which are only intended for persons in maintenance or who has in-depth knowledge of the control pro-

The S203 is a heating controller for 3 circuits (two heating circuits and one hot water circuit). Wiring and

Outdoor temp.
H1 Supply water
H2 Supply water
DHW Supply water
Automatic
Automatic
Automatic
-12.4°C
45.2°C
32.8°C
58.0°C
13:51 08.03.2021 Selection >
You can move from one favourite view to another
by pressing the key.
Calibration
Calibration
Calibration
-12.4°C
45.2°C
32.8°C
58.0°C
13:51 08.03.2021
The calibration time is always performed when the
controller is started and every Monday at 9.00. The
calibration duration is 1.1 times the
actuator running time.
Outdoor temp.
H1 Supply water
H2 Supply water
DHW Supply water
Selection >
OK
OK

3
1 Display menus 4
1.1 Basic view 4
1.2 Favourite views 5
1.3 Menu structure 6
2 Inputs and outputs 7
3 Regulation of supply water in heating circuits 9
3.1 Info 9
3.2 Heating curve 11
3.3 Setting values 13
3.4 Control mode 14
3.5 Time programs 15
3.5.1 Weekly schedule 15
3.5.2 Exception schedule 16
3.5.3 Special days 16
3.5.4 Temp. level according to time program 16
4 Domestic hot water control 17
4.1 Time programs 19
5 Relay control 21
6 Trends 23
7 Alarms 24
8 System settings 27
8.1 Setting date, time and language 27
8.2 Text message (SMS) settings 28
8.3 Network settings 29
8.4 Display settings 32
8.5 Type information 32
8.6 Lock code 32
9. Connection guide 33
9.1 Connections and conguration 37
10 Service settings 41
11 Restore settings and updates 47
12 Turn the display unit 48
Remote control options: 48
Optional accessories 49
Text message quick reference 50
Index 51
Tecnical information 52
Language/ Kieli
Palauta varmuuskopio
Kytkennät ja käyttöönotto
Ota valinnat käyttöön
suomi/Finnish >
>
>
>
Press OK. Select language and press OK.
The device restart.
More information see page 27
More information see page 47
More information see page 37
More information see page 47
Aloituskysely
Start up wizard
Language English/English >
Restore backup >
Connections and conguration >
Take selections into use >
Contents

4
Outdoor temp.
H1 Supply water
H2 Supply water
DHW Supply water
Automatic
Automatic
Automatic
-12.4°C
45.2°C
32.8°C
58.0°C
13:51 08.03.2021 Selection > 2
Central factors related to controlling heating are visible in the regulator’s basic view. When the unit is idle
state (keys have not been touched for a while) the display shows the basic view.

the most important information for monitoring operation of the unit. Favourite views that can be changed
by users enable them to easily access desired menus. Setting values needed by the user can easily be
found in the versatile menu structure.
1 Display menus
• A blinking exclamation
point means the unit has
active alarms.
• The number indicates the
number of active alarms.
Symbol indicates that
alarms are disabled.
Temperature measurements
enable quickly determining
proper operation of the circuit.
Circuit control. This shows whether the
circuit’s heating level has been contin-
uously forced to a particularly level or if
the controller is in manual mode.
Alarm indication
1.1 Basic view
Ouman S203 can generate alarms for several dierent reasons. In
the event of an alarm, an alarm window pops up showing detailed
alarm information and a beeping alarm signal goes on, if the alarm
sound is not turned o (see page 27).
If there are several unacknowledged alarms, the latest activated
alarm is always shown in the display. As soon as all active alarms
have been acknowledged, the alarm window disappears and the
alarm signal goes o.
Alarm signal of all active alarms may also be muted by pressing Esc
button. When you press Esc, the alarm signal stops and the last alarm
windows disappear from the display.
You may look into the alarms later by going to ”Alarms” > ”Active
alarms”. If an alarm has not been acknowledged, an exclamation
mark will appear in the beginning of the row.
Alarm notice
Deviation alarm
PRIO1 GROUP1
S203.TE02.DA111
H1 Supply water=10.2 °C
Received: 08.11.2021 02:27
Press OK to acknowledge the alarm
When controller is congured, it’s possible to disable alarms. When
the alarms are disabled, the symbol will be displayed in the main
menu. Alarms are enabled in the service mode -> Alarm settings ->
Alarms: Disabled/Enabled.
Acknowledging alarms: Press OK
and the alarm sound will me mut-
ed. If the reason for the alarm is still
present, the exclamation point in the
top right will continue to blink.

5
You can easily navigate from the basic view to the desired menu using the favourite view function. You can
navigate from one favourite view to another by pressing the 


ESC key until the basic view appears.
Navigate to the view you want to add to your favourite views. Hold down the key for an extended period
of time until the ”Save view in memory location” menu appears. Select the memory location where you want
to add the favourite view and press OK. If you select a location where a favourite view has already been
saved, the new favourite view will replace the existing one.
Basic view
H2 Info
H1 Info
DHW Info
Setting a favourite view
Your own favourite view
H1 Info
H2 Info
---SUPPLY WATER -------------------------------
According to curve
Calculated water setting
---- MEASUREMENTS -------------------------------
---SUPPLY WATER -------------------------------
cording to curve
Calculated water setting
---- MEASUREMENTS --------------------------------
>
30.7 °C >
30.7 °C >
>
31.4 °C >
31.4 °C >
DHW Measurements
Domestic hot water control
Supply water temperature
Circulation water temp.
------ ACTUATOR CONTROL --------------------
58.0 °C>
56.5 °C >
50.0 °C>
Alarm history
02.12.2020 10:11:42 Sensor fault H1 Supply w >
05.12.2020 11:22:40 Sensor fault H1 Return >
2
1.2 Favourite views
You can’t set service menus as your favourite view. You can’t set any favourite views as long as the service code
is active. To deactivate the service code press Esc -button until the main menu is shown and background light of
the display is dimmed.
Outdoor temp.
H1 Supply water
H2 Supply water
DHW Supply water
Automatic
Automatic
Automatic
-12.4°C
45.2°C
32.8°C
58.0°C
13:51 05112020 2
Selection >

6
Main menu Page 7
In the user manual
Page 9
Page 9
Page 17
Page 24
Page 27
Inputs and outputs
H1 Control circuit
H2 Control circuit
DHW Domestic hot water control
Relay 1 control
Relay 2 control
Trends
Alarms
System settings
Service
>
>
>
>
IInputs and outputs
Home/Away mode Home >
----------------------------------------------------
Outdoor temp. -18.2 °C
H1 Supply water 35.1 °C
H1 Return water temperature 22.0 °C
H1 Room temperature 21.5 °C
H2 Supply water 36.5 °C
...
H1 Control circuit
H2 Control circuit
Info
Heating curve
Setting values
Control mode
Time programs
Info
Heating curve
Setting values
Control mode
Time programs
>
>
>
Automatic >
>
>
>
>
Automatic >
>
DHW Domestic hot water control
Info
Setting values
Control mode Automatic
Trend display
Time programs
>
>
>
>
>
Alarms
Active alarms
Acknowldge all alarms
Alarm history
Reset alarm history
Alarm receivers
Routing schedule
Alarm signal
>
>
>
>
>
>
On>
System settings
Time 17:01
Date 27.09.2021
Daylight saving In use
Language English/ English
SMS settings
Network settings
Display settings
Type info
Lock code
>
>
>
>
>
>
>
>
Not in use >
1.3 Menu structure
Page 21
Page 21
Page 23
Relay 1 control
Relay 2 control
Function Heating thermostat (TR5)
Setting value
Outdoor temp.
TR5 Control
Function Deft. therm.&time ctrl (TR6)
Temperature limit 1
Temperature limit 2
Time program
Outdoor temp.
TR6 control
21.0 °C >
11.0 °C >
Off >
5.0 °C >
-5.0 °C >
>
11.0 °C >
Off >
Trends
Outdoor temp.
----------------------------------------------------
H1 Supply water
H1 Return water
...
>
>
>
The service mode is
for the professional
service persons and it
includes information and
parameters which are not
needed on daily basis.
The service code must be
given in order to access the
service menu.
Service

7
2 Inputs and outputs

            -
vice menu (see p. 36-39).General measurements are temperature
  
The default names of the measurements can be changed accord-
ing to use case.
If the sensor is not connected or is defective, the measurement
value shown will be -50°C (cross sensor) or +130 °C (sensor circuit
shorted). If a measurement is in manual mode, a hand image is
shown in the beginning of the line.
Inputs and outputs
Inputs and outputs are shown by the regulator in circuit-specic
groups. First H1, then H2 and last DHW
Informational general measurements, which can be used for
several purposes. Measurements can be named in the service
menu. (Navigate: Service -> Connections and conguration).
1
1
2
2
2
2
Main menu
Inputs and outputs
H1 Control circuit
H2 Control circuit
DHW Control circuit
>
>
>
>
Inputs and outputs
------ INPUTS AND OUTPUTS -----------------------
Outdoor temp. -18.2 °C
H1 Supply water 35.1 °C
H1 Return water temperature 22.0 °C
H1 Room temperature 21.5 °C
H2 Supply water 28.1 °C
H2 Return water temperature 21.1 °C
...
>
>
>
>
>
>
>
>
Measurement Range Measurement information
Home/Away mode Home/Away Home-Away mode. By pressing OK you can change the status of the
Home/Away mode. The mode can also be changed by Home/Away-switch
or by text message “Home” or “Away” when a GSM-modem (optional) is
available.
--------INPUTS---------------
Outdoor temp. -50...+130 °C Measured current outdoor temperature.
H1 /H2 Supply water -50...+130 °C Current temperature of the water entering the heating network.
H1 /H2 Return water temperature -50...+130 °C Current temperature of the water returning form the heating network.
H1 /H2 Room temperature -50...+130 °C Current room temperature.
DHW Supply water -50...+130 °C Current domestic hot water temperature.
DHW Circulation water temp. -50...+130 °C When there is no consumption, the measurement shows the temperature
of DHW return water. During consumption, the measurement will show the
mixed temperature of cold water and return water, in which case the meas-
urement is used in so-called anticipation to improve the regulation result.
H1/H2 DH Return -50...+130 °C Temperature of return water after the district heat exchanger or other freely
named temperature measurement.
DH Supply water temp. -50...+130 °C Temperature of water coming from the district heating plant.
DH Return water temp. -50...+130 °C Temperature of water returning to the district heating plant.
M10 (M11) Switch alarm
mode
O/On Information of the alarm contact.
General compensation 0...100% General compensation input value.
Measurement M11 (M12,
M13)
-50...+130 °C Freely nameable general measurement.
Pressure switch mode O/ On When the pressure of the network lowers below the pressure alarm level,
the state of the switch is changed to on and an alarm is activated.
Pressure measurement 0.... 16 bar Pressure of the heating network.
P2.1 (P2.2, P3.1, P3.2) Pump stop/run Status of the pump. (Run information is displayed if M15, M16, DI1 or DI2 is
selected as “Pump Indication”).
DI 1 (DI 2) Water volume The measured amount of water consumption (cumulative value).
DI 1 (DI2) Energy measure-
ment
The measured amount of energy consumption (cumulative value).
Moisture sensor wet/dry Shows the state (wet/dry) of the moisture sensor.

8
Seis/Käy
If a GSM modem is connected to the controller, you can read meas-
urement information with a mobile phone. (If the device ID is in use,
add the device ID in front of the key word, e.g., TC01 Inputs)
Send a message: Inputs
The controller sends the current measurement information to your
mobile phone.
Same way send a message: Outputs
You can also change Home/Away mode.
Send a message: Home. The controller sends a response mes-
sage, which shows, that Home/Away -control is on Home-mode.
Similarly you can send a message: Away.
Key word:
Home:
Home-Away-control = Home/
INPUTS
OUTPUTS
HOME
AWAY
Outputs:
H1 = Actuator control = 25 % /
H2 Actuator control = 26 % /
DHW Actuator control = 52 %/
P2.1 Pump control = On
Inputs:
Outdoor temp. -18.2 °C /
H1 Supply water 35.1 °C/ H1
Return water 22.0 °C /
H1 Room temperature 21.5 °C /
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 rst
open the valve and the controller will then start up actuator 2.
P2.1 (2.2, P3.1, P3.2)
Pump control
O/On Pump control status. The information is displayed if the pump control is
selected and measurement selection in measurement channel M15, M16,
DI1 or DI2 is “Pump alarm” or “Not in use”. Information is not displayed if
measurement selection is “Pump indication” (=run information).
TR5 (6) control (nameable) O/On Relay control mode at the moment. TR5 control is a relay control 1 and TR6
is the relay control 2.
Solenoid valve control Open/ Closed When the moisture sensor detects the moisture, the valve is driven to
closed position. If there is a 3-point controlled actuator in H1 control circuit,
the solenoid valve can`t be connected to the controller.

9

independently (H1 and H2).
Regulation of the temperature of supply water is controlled by
the outside temperature. Use of room temperature measure-
ments keeps room temperature more consistent.
3 Regulation of supply water in heating circuits
3.1 Info

water temperature control. The starting point is the supply water
temperature according to the outdoor temperature (according to
the heating curve).
If a room sensor is connected to the controller, you can check
which factors currently determine the room temperature setting
value at the time of inspection.
In addition the info menu contains the measurement temperature

of actuators.
H1 (H2) Control circuit-> Info
Main menu
Inputs and outputs
H1 Control circuit
H2 Control circuit
DHW Control circuit
Trends
Alarms
System settings
Service
>
>
>
>
>
>
>
>
H1 Control circuit
Info
Heating curve
Setting values
Control mode
Time program
>
>
>
>
>
Factors eecting the supply water
temp. Explanation
According to curve Supply water temperature setting according to the curve at the current outdoor
temperature.
Eect of parallel shift Eect of parallel shift on the supply water temperature.
Eect of time program Eect of weekly or exception schedule mode on the temperature of supply water.
Near the end of the temperature reduction time, the pre-increase operation can
increase the temperature of supply water.
Force control eect Supply water has been forced permanently to the desired temperature reduction
level (see Control mode selection).
Away -control eect ”Away” control for reduction of supply water temperature. The trigger can come
from the Home/Away switch, the controller or be sent as a text message (see 41).
Outdoor temp. delay eect The eect of the outdoor temperature delay on the supply water temperature.
Floor heat. anticipate Eect of anticipation of oor heating on the temperature of supply water.
Eect of autumn drying Eect of automatic autumn drying on the supply water temperature.
Return water compensation Increase in supply water temperature due to return water compensation.
Heat exhanger DH Return comp. eect Supply water increase caused by temperature compensation for return water
from district heating exchanger.
Eect of room compensation Eect of room compensation on the supply water.
Room comp. time adjustment Additional correction for more precise room compensation based on realised
regulation (eect of I-regulation).
General compensation eect General compensation can be based for example on wind, solar or pressure
measurements.
Bus compensation eect The amount of required compensation is determined by an external device to the
S203, for example from bus compensation to weather compensation.
Min limit eect Supply water temperature increase due to the minimum limit.
Max limit eect Supply water temperature drop due to the maximum limit.
Calculated supply water setting Current supply water temperature determined by the controller.
Controller is stopped for summer When the regulator is in summer function mode, the supply water information
says ”Controller is stopped for summer.”
Controller is in manual control Control circuit mode is set to ” Manual control”.

10
Send a message: H1 Info.
The controller sends a supply water info from the H1 heating circuit
to your mobile phone that shows current supply water tempera-
ture at the present and the factors eecting supply water control.
The message also includes the measurements which are aecting
the supply water control and the actuator control.
The message cannot be changed or sent back to the controller.
Key words:
H1 info:
--- H1 SUPPLY WATER-------------
According to curve 35.1 °C/
Away -control effect -6.0 °C/
Calculated supply water
setting = 29.1 °C.
--- MEASUREMENTS --------------
Supply water = 35.2 °C
Outdoor temp.= -10.7 °C
--- ACTUATOR CONTROL----------
Actuartor control = 20 %
H1 INFO
H2 INFO
Factors eecting the room temperature Explanation
----- ROOM TEMPERATURE --------------
Room temperature setting Room temperature setting set by the user.
Time program eect on room temp. Room temperature drop by weekly or exception schedule.
Away -control eect Home/Away mode for reduction of room temperature. The trigger can come from
the controller (see Inputs and outputs-> Home-Away-control), from the Home/
Away switch or be sent as a text message.
Force control eect Room temperature has been forced permanently to the desired reduction in
room temperature (see Control mode selection, p.13).
Eect of autumn drying Eect of automatic autumn drying on room temperature.
Calculated room temperature Current room temperature setting determined by the controller.
----- MEASUREMENTS -------------------
Supply water temperature Current measured supply water temperature.
Outdoor temp. The measured outdoor temperature. Outdoor temperature data is displayed if the
delayed outdoor temperature is not used in supply water control.
Delayed outdoor temperature If the heating mode is set to radiator heating, the delayed temperature meas-
urement can be used in supply water control. Typically 2 hours delay time is
used (time can be set in service menu). In supply water control the controller
uses delayed measurement as an outdoor temperature.
Anticipated outdoor temperature If the heating mode is set to oor heating, the anticipated temperature meas-
urement can be used in supply water control. Typically 2 hours anticipation
time is used (time can be set in service menu). In supply water control the con-
troller takes into account the outdoor temperature change rate.
Room temperature The measured room temperature or room temperature from the bus. The
measurement is not necessarily taken into use in all control processes.
Delayed room temperature The oating average of room temperature. The controller uses this value, when
calculating the room compensation demand (the delay time of room tempera-
ture measurement is adjustable, default 0.5 hours).
Return water temperature Presents measured return water temperature.
----- ACTUATOR CONTROL ------------
---
Actuator control Current actuator control.
Actuator control 1 (2) Current actuator 2 control. If serial-driving is in use, actuator 1 will rst open the
valve and the controller will then start up actuator 2.
Actuators control 50 % means that the valve 1 is totally open and the valve 2 is totally closed. 100%
means that both valves are open.
----- PUMPS-------------------
P2.1 (3.1) Pump The state of the pump.
P2.2 (3.2) Pump The state of the reserve pump/alternative pump.
P2.1 (3.1) Pump control Control of the pump.
P2.2 (3.2) Pump control Control of the reserve pump/alternative pump.
P2.1 (3.1) Run time Running time for pump from the counter.
P2.2 (3.2) Run time Running time for reserve/ alternative pump from the counter.
Pump in progress Indicates which of the pumps is running in P2.1 or P2.2 (H1)/ P3.1 or P3.2 (H2 circuit).