OUMAN EH-203 User manual

www.ouman.fi
EH-net
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.)
 TraditionaltextmessageusewithallGSMphones


OUMAN EH-203
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.
All the different functions are presented in this user manual. In the begin-
ning we present the basic principles for using the controller.
User panel
Regulating circuit code
indicates the regulating circuit
in question (heating circuit H1
shown here).
Browse button
moves the > cursor up and
down.
Group select button -
moves you from one
regulating to the next.
The regulating circuits are:
H1, heating regulating circuit,
H2, heating regulating circuit and
HW, domestic hot water
regulating circuit.
Symbols which indicate
actuator control mode.
Regulator opens the 3-point
controlled actuator.
Regulator closes the 3-point
controlled actuator.
Height up the pillar shows the
position of the voltage controlled
actuator.
Valve is fully open (100%) and
the control voltage is 10 V.
Valve is fully closed (0%) and
the control voltage is 0 V or
2 V (2 ... 10 V actuator).
Decrease
button
OK
button
Increase -button
When you press + button
in adjoining basic display
mode, the regulator dis-
plays all the measure-
ment results in turn and
then returns to the basic
display mode.
INFO-button -gives
operating instructions
and additional informa-
tion on the display in
different situations.
ESC press to
return to the
previous display.
Remote control options:
Remote control via a GSM phone
Most of EH-203’s user level functions can also be carried
out via GSM phone text messages.
Web based user interface
Ouman controllers can also be controlled and moni-
tored via an inexpensive web user interface. A web
scanner is easy to use and can illustrate remote con-
trol and monitoring of even large Ouman control sys-
tems regardless of the time and place.
Text message use is illustrated on
page 20.
If the control circuit has been
labeled, the control circuit’s
current control mode and label
are alternately displayed on the
top line of the basic display.

OUMAN EH-203 CONTENTS
Settings for characteristic heating curve
Settings
Measurements
Measurements and sensor connection information
Supply water temperature information
District heating energy measurement
Operating modes
Clock functions
Language selection
Type information
Start function
Alarms
GSM-functions
4
6
8
9
10
11
12
13
16
16
17
18
19
User guide
OUMAN OY
Voimatie6,90440Kempele
Tel.+3584248401
Fax+35888155060
www.ouman.fi
Espoo sales office:
Upseerinkatu1,02600Espoo
Tel+358424840202
Fax+358947801030
44
45
46
47
48
Service
Entering the maintenance mode
Tuning values
Settings
Trends
Actuator selection
Relay 1 control selection
Relay 2 control selection
21
22
23
24
25
26
27
28
29
30
31
32
34
35
36
37
37
38
39
40
41
42
43
These pages contain direc-
tions for maintenance per-
sons authorized by Ouman.
Access to the regulator´s
maintenance mode is pre-
vented by a maintenance
mode.
Maintenance guide
Installation and maintenance guide
Connection guide
Optional equipment
Index
Technical information
Special service
Restore factory settings
Settings
Measurement 6 setting
Pressure measurement
Digital inputs 1, 2 and 3
Characteristic heating curve type selection (3-point/5-point)
Labelling control circuits
Energy meter
Net connections
LON initialization
Net measurements
Text message connection via the modem
Text message connection via buss
District heating’s return water temperature limiting
Data link
Using the browser
We reserve the right to make changes in our products without prior notice.

OUMAN EH-203
4
Press OK. Press the - or + button to set the supply
water temperature at an outdoor temperature of -20 °C.
Press OK.
Press the button to move to the next
adjustment point.
Press OK. Press the - or + button to set the supply
water temperature at an outdoor temperature of -20 °C.
Press OK.
Press the button to move to the next
adjustment point.
Press OK. Press the - or + button to set the
outdoor temperature for which you want to
determine the supply water temperature. Press OK.
Press the - or + button to set the supply water temperature for the outdoor tem-
perature in question. Press OK. Press the button to move to the next
adjustment point.
Press OK. Press the - or + button to set the supply
water temperature at an outdoor temperature of +20 °C.
Press OK.
Press the button to move to the next
adjustment point.
Press OK. Press the - or + button to set the supply
water temperature at an outdoor temperature of 0 °C.
Press OK.
Press the button to move to the next
adjustment point.
Press OK. Press the - or + button to set the supply water temperature at an
outdoor temperature of
-20 °C. Press OK.
Press the button to move to the next
adjustment point. Exit with ESC.
SETTINGS FOR HEATING CURVE
5
4
2
20 0 -20 °C
3
1
H2 Automatic
H1 Automatic
Outdoor -15°C
SupplyTemp52°C
Selection
H1 Select
Heating curve
Settings
Measurements
Info water temp
DH Energy meas.
Operat. modes
Clock functions
Language/kieli
Type info
Start function
Mainten. mode
H1 Curve:
-20 = 58°C
0 = 41°C
+20 = 18°C
°C
20
20
35
50
65
80
0 -20
H1 Curve:
-20 = 58°C
-10 = 50°C
0 = 41°C
+10 = 28°C
+20 = 18°C °C
20
35
50
65
80
H1 Curve:
-20 = 58°C
0 = 41°C
+20 = 18°C
°C
20
20
35
50
65
80
0 -20
H1 Curve:
-20 = 58°C
-10 = 50°C
0 = 41°C
+10 = 28°C
+20 = 18°C °C
20
35
50
65
80
H1 Curve:
-20 = 58°C
0 = 41°C
+20 = 18°C
°C
20
20
35
50
65
80
0 -20
H1 Curve:
-20 = 58°C
-10 = 50°C
0 = 41°C
+10 = 28°C
+20 = 18°C °C
20
35
50
65
80
The correct shape for the characteristic heating curve depends on many
factors (the insulation in a house, type of heat distribution, the dimensions
of the piping, etc.). A heating curve is typically set so that the supply water
temperature rises when the outdoor temperature drops. Ouman EH-203’s
characteristic heating curve can be adjusted to exactly t the needs of the
facility from either three or ve points. A 3-point curve is a factory setting.
A 5-point curve can be taken into use in the special maintenance mode. (see
p. 34).
OPERATING INSTRUCTION:
Press ESC until the display no longer changes.
You are then in the ”Selection” display shown in the adjoining picture.
Use the button to move from one regulating circuit to the next (H1,
H2).
Press the button to move cursor to ”Heating curve”
Press OK.
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.
Adjustment
point 1
Adjustment
point 2
Adjustment
point 3
Adjustment
point 1
Adjustment
points 2-4
Adjustment
point 5
3
20 0 -20 °C
2
1
Supply water
Outdoor temp.
5-point curve (taken into use in special maintenance see p. 34): You can adjust the characteristic heating curve us-
ing outdoor temperature settings -20°C and +20°C as well as three other outdoor temperature settings between -20°C
- +20°C. Note! Automatic characteristic heating curve proposed correction is not in use!
Hint!
Adjustable values are
white in color.
Hint!
Supply water
Outdoor temp.

OUMAN EH-203
5
Instructions for setting the curve
H1 Curve:
-20 = 58°C
0 = 41°C
+20 = 18°C
°C
20
20
35
50
65
80
0 -20
H1 Curve:
-20 = 32°C
0 = 27°C
+20 = 21°C
°C
20
20
35
50
65
80
0 -20
H1 Curve:
-20 = 62°C
0 = 42°C
+20 = 20°C
°C
20
20
35
50
65
80
0 -20
H1 Curve:
-20 = 58°C
0 = 41°C
+20 = 18°C
°C
20
20
35
50
65
80
0 -20
CURVE INTERPRETATION: When the outdoor temp. is: -20 °C, the supply water is +58 °C
0 °C, the supply water is +41 °C
+20 °C, the supply water is +18 °C
Attention! The temperature of the supply water may vary from the curve
if a reduced operation mode, room, wind or sun compensation
has been connected to the regulator or if one of the limiting functions
limits the temperature (see p. 10).
If the outdoor sensor is disconnected or if the sensor is broken,
the regulator assumes that the outdoor temperature is 0 °C (use during
construction without the outdoor sensor).
EXAMPLES OF DIFFERENT HEATING SYSTEMS:
A) Normal radiator network
(H1 circuit, factory setting)
B) Floor heating C) Preheating for air conditioning
(H2 circuit, factory setting)
INSTRUCTION: If the room temperature drops in sub zero weather, raise the curve setting
at -20 °C.
If the room temperature rises in sub zero weather, lower the curve setting
at -20 °C.
If the room temp. feels chilly at zero degree weather, raise the curve set-
ting at 0 °C.
In this way you can set the regulating curve to meet the heating needs of
your facility.
Parallel shift: If the room temperature remains constant, but it is either
too cold or too hot, the characteristic heating curve can be moved using
a parallel shift. The number of degrees of the parallel shift indicates the
amount the characteristic heating curve is moved on the supply water
temperature scale.
Note! Wait for a sufcient length of time after the settings have been ad-
justed so the adjustment has time to effect the room temperature.
The 5-point characteristic heating curve bisects 5 adjustment points. In
addition, the supply water temperature can be limited by setting minimum
and maximum limits for the supply water. (see p. 6).
With a 5-point curve, the supply water temperatures are set for outdoor
temperatures -20 °C and +20 °C. In addition, three other outdoor tem-
peratures can be set between -20 °C and +20 °C that are given supply
water temperatures.
The supply water temperature setting range is +5 °C … +120 °C for each
adjustment point.
5-POINT CURVE:
Supply water °C
+20
+20°C -20°C
+40
+60
+80
Outdoor temp.
Maximum limit
Minimum
limit
Characteristic heating
curve parallel shift
KEYWORDS:
Heating curves
H1 Heating curve
H2 Heating curve
H1 CURVE:
(-20=58
0=41
+20=19)
H2 CURVE:
(-20=59
0=42
+20=21)
Supply water temperature
Outdoor temperature

OUMAN EH-203
6
SETTINGS
Settings: Factory
settings:
Explanation: Attention!Range:
Room sensor (TMR) must be con-
nected (H1:meas.3, H2: meas. 6, or
net). An appropriate room compen-
sation ratio for oor heating is usu-
ally between 1.5 - 2.0°C.
Transmitter must be connected,
the same sensor for regul. circuits
H1 and H2 (meas. 6).
Changing the domestic hot water temperature:
Changing the heating regulating circuit setting:
Press the button to move the cursor to the setting that you want to
change. Press OK. Press the -or + button to change the setting.
Press OK. Exit with ESC.
H1 Settings
Room temp. 21.5
Temp drop(w) 0
Min.limit 15
Max.limit 70
Parall.shift 0
RoomCompens. 4
E-compens.r.
0
Pre-increase 0
Autumn dry 2
Burner ON 70
El.Heater ON 50
Valve close 19
R1 Temp.lim. 55
H1 Select
Heating curve
Settings
Measurements
HW Settings °C
DomHot wat. 55.0
HW
H2 Automatic
H1 Automatic
Outdoor -15°C
SupplyTemp52°C
Selection
Room temp.
Temp drop (w)
(supply water)
Min. limit
Max. limit
Parall.shift
Room compens.
E-compens.r.
Room temperature setting, which user has set.
During temp. drop period regulator use the calculated room
temp. setting.
The supply water temperature drop, determined by the clock
program or the external home/away switch. (Room com-
pensation takes a desired drop in room temperature into ac-
count).
Minimum allowed supply water temperature. Set the minimum
limit for oor heating circuit tiled oors between 20...25°C, to
ensure a comfortable temperature and removal of moisture in
the summer.
Maximum allowed supply water temperature.
The maximum limit prevents the temperature in the heating
circuit from rising too high, preventing damage to pipes and
surface materials. If, e.g., the characteristic heating curve set-
ting is incorrect, the maximum limit prevents excessively hot
water from entering the network. Set the upper limit for oor
heating between 35...40°C.
A parallel shift occurs when a change in supply water tem-
perature occurs at each adjustment point.
Room compensation ratio: If the room temperature is different
than what it is set at, the room compensation corrects the
supply water temperature. (Eg.) If the room compensation is
4 and the room temperature has risen 1,5 °C above the set-
ting, the regulator drops the supply water temperature 6 °C
(4x1,5 °C =6 °C)
E-compensation ratio: Compensation relation shows how
much the E-compensation can, at the most, make the heating
water temperature rise or sink. E-compensation is used for
example where wind and sun measurement is used.
21,5 °C
0 °C
15 °C
70 °C
0 °C
4.0 °C
0 °C
5...45 °C
0...35 °C
5...70 °C
15...125 °C
-15...+15 °C
0.0...7.0 °C
-15...15 °C
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).
By browsing you can see which settings you have in use.
Browsing and setting changes occur in the following way:
Use the button to move to domestic hot water
regulating circuit (HW). Press OK.
Press the - or + button to change the setting. Press
OK. Exit with ESC.
Press the button to move cursor to ”Settings”. Press OK.
INFORMATION ABOUT SETTINGS:
Room compens.
Temp drop(w)
Room temp. -
80
65
50
35
20
-20 °C020
Maximum limit
80
65
50
35
20
-20 °C020
Parallel shifts
80
65
50
35
20
-20 °C020
Minimum limit
OPERATING INSTRUCTION:
Press ESC until the display no longer changes.
You are then in the ”Selection” display shown in the adjoining picture.
Use the button to move from one regulating circuit to the next (H1, H2, HW).
Calculated room temp. setting =

OUMAN EH-203
7
Additional information about settings
KEYWORDS:
H1 Settings
H2 Settings
DHW Settings
H1 Settings:
Roomtemp.=21.5/
Temp drop(w)=0/
Min.limit=15/
Max.limit=8/
Room.compens.=0/
Pre increase=2/
Autumn dry =2/
...
Pre-increase
Autumn dry
Burner ON
El.Heater ON
Valve close
Pump stop
R1 Temp.lim.
DomHot wat.
The automatic pre-increase in degrees which occurs after a
reduced operation (nighttime drop) The pre-increase makes it
possible to raise the room temperature faster to a nominal room
temperature (day temp.) after a reduced operation.
A maintenance person must set the length of the pre-increase
time (see maintenance mode p 23).
In autumn, the temperature of the supply water is automatically
raised for 20 days through autumn drying. Autumn drying is
activated when the average temperature in a 24-hour period
has continually been above 5 °C for a period of at least 20
days and after this drops below 5 °C. Autumn drying is acti-
vated during the next 20 days whenever the average tem-
perature in a 24-hour period is under 5 °C. The autumn drying
setting indicates how much autumn drying raises the supply
water temperature. The original factory
setting is 2 °C.
When the temperature of measurement 10 drops to the set lim-
it, the regulator causes relay 1 to turn the burner on (see p. 26).
When the temperature of measurement 10 drops to the set
limit, the regulator causes relay 2 to switch on the heating re-
sistor (see p. 27).
Valve closed during the summer: The outdoor temperature
limit at which the regulator closes the valve/valves. A factory
setting is that only the valve in the H1 circuit closes. If the
maintenance person has selected ”H1 Valve regul or H2 Valve
regul” under pump summer stop, the function is not on in that
particular circuit. Select ”H1 (H2) Valve close” in pump summer
stop for that function to be on (see p. 26).
Pump summer stop: Outdoor temperature at which the regu-
lator stops the pump. During connection and installation, the
maintenance person decides whether to stop both the H1 and
H2 circuit pumps and whether the valves will continue regulat-
ing or whether they will close (each of the valve’s functions is
determined separately, see maintenance mode page 26).
The temp. of measurement 11 where relay 1 is active.
Domestic hot water temperature setting. Because of danger of
bacteria, it is recommended that the domestic hot water tem-
perature is not set below +55°C.
Select relay 1 for
burner control.
Select relay 2 for
heating resistor control.
If heating pump control has
been selected for relay 1’s
control function, this set-
ting becomes the pump’s
summer stop limit.
Pump stop appears in
place of the valve sum-
mer close setting if heating
pump control has been se-
lected in the relay 1 control
mode (p. 25).
Can be set when relay1 is
selected to temp. operated
function (p.26).
0 °C
2 °C
70 °C
50 °C
19 °C
19 °C
55 °C
58.0 °C
0...25 °C
0...15 °C
5...95 °C
5...95 °C
5...50 °C
5...50 °C
0...100 °C
5.0...95.0 °C
5°C
Time/day
123 45 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Autumn drying - function on
Average temp.
In a 24-hour
(Outdoor temp.)
Nominal
temperature Reduced temp.
= night drop Pre-increase time
(A mainten. person set)
Average temp. In a 24-hour
(Outdoor temp.)
Spared energy
Room temp.
°C
Average 24-hours temp. curve
Settings: Factory
settings:
Explanation: Attention!Range:

OUMAN EH-203
8
Browsing through measurements:
Press the button to browse different measurements.
Press ESC to exit from the measurements display.
Every sensor has it’s own typical range. (Eg. outdoor sensor 50...+ 50 °C). If the
sensor’s measured value is outside of this range, a- or +character will appear
on the measurements display in place of the sensor’s measured value to indicate
whether the value is above or below the range.
If there is a sensor defect the regulator gives an alarm (see p. 18) and “err” will
appear in place of the measured value.
MEASUREMENTS
KEYWORD: Measurements
H1 Supply=52/
H1 Room=21.2/
H1 Ret.water=28/
Outdoor=-15/
H2 Supply=48/
...
Measurements
Name change
Meas. 6
Give new label
easurements °C
H1 Supply
H1 Room
H1 Ret.water
Outdoor
H2 Supply
Cold water
HW Supply
HWcircul.wat
H2 Return
DH ReturnHE3
DH ReturnHE2
DH m3
Inst. l/s
DH MWh
Inst. kW
Wat m3
ActuatorH1
ActuatorH2
ActuatorHW
52
21,2
28
-15
48
5
55
47
26
34
30
2001584,6
66
10036,5
145,3
11123,45
45%
45%
45%
Name change
Meas. 6
a
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
be used to indicate external alarms (additional information on alarms page
18) ATTENTION! Only the measurements connected to the regulator appear
on the display.
OPERATING INSTRUCTION:
Press ESC until the display no longer changes. You are then in the ”Selection”
display shown in the adjoining picture. When you press the +button in the basic
display mode, the regulator displays all the measurement results in turn and then
returns to the basic display mode.
You can also browse measurement data in the ”Measurements” display
Press OK.
Press the button to move cursor to “Measurements”. Press OK.
Meas. 6: A free information type temperature measurement which can be labelled (the factory setting is cold water) or
pressure measurement. Measurement 6 can alsoor used as a measurement effecting control (H2 room or E-compensa-
tion, see special maintenance, p. 30).
Meas. 9: A free information type temp. measurement which can be labelled (the factory setting is H2 return water).
Meas. 10: A free information type temperature measurement which can be labelled (the factory setting is DH Return
HE3). If relay 1 is reserved for burner control and/or relay 2 is reserved for heating resistor control, the controller uses
meas. 10 as a temp. control measurement.
Meas. 11: A free information type temperature measurement which can be labelled (the factory setting is DH Return
HE2). If relay 1 is controlled by a temperature controlled relay (see p. 26), the controller automatically reserves measure-
ment 11 for relay 1 temperature measurement.
Relabeling measurements 6, 9, 10 and 11:
Move the cursor to the measurement (6, 9, 10 or 11) that has to be relabeled. Press OK.
Move the cursor to “Give new label”. Press OK.
A letter “a” appears on the display. You can move forward or backward in the character row by
pressing the + or - button. Conrm the letter/character by pressing OK, then the same letter/
character that you selected will blink in the next space. The character that has been fed last
can be deleted by pressing ESC. If you press the ESC button for a while you can delete the
new name and the previous name remains in effect. When you have written the name, press
OK for a while (over 2 sec.), to exit from the data entry mode and the name that has been
written will come into effect.
Text editor’s characters in the order in which they appear: “Empty” . - numbers 0... 9 letters A ...Z a … z ä ö å
Swimming pool
Cellar
Sauna
Accumulator
Measurement
can be
labelled
H1 Select
Heating curve
Settings
Measurements
Info water temp
HW
H2 Automatic
H1 Automatic
Outdoor -15°C
SupplyTemp52°C
Selection

OUMAN EH-203
9
MEASUREMENTS Additional information
Strip
connector
Measurement Information om mätning: Measurement
information:
Attention!
°C
-30
-25
-20
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
177 210
130 540
97 140
72 990
55 350
42 340
32 660
25 400
19 900
15 710
12 490
10 000
8 055
6 531
5 325
4 368
3 602
2 987
2 488
2 084
1 753
1 482
Ω
Resistance
value table
1
2
3
4
5
6
6
6
6
7
8
9
10
11
Can be read through the net.
Can be read through the net.
Interchangeable (p. 30). If
several compens. are need-
ed, the data must be read
through the net (p. 36).
Relay 1 controls the burner
and relay 2 controls the
heating resistor.
Consumption data can be
read as digital inputs or
through the net.
Appears only when using a
0...10V (2...10V) controlled
actuator.
-50... +50
0...+130
-10... +80
0...+130
0...+130
-10... +80
ks. 31
ks. 30
0...+130
-10... +80
0...+130
0...+130
0...+130
0...9999999.9
0.0...120.0
0.0...99999.9
0...3276,7
0.0...99999.9
INSTRUCTIONS FOR CONNECTING SENSORS:
Outdoor temp. sensor
H1 Supply water sensor
H1 Room sensor
H1 Return water sensor
H2 Supply water sensor
Free temp. measurement
(Cold water)
HW supply water sensor
HW circul. water sensor
(anticipate -sensor)
Free temp.measurement
(DH Return HE3)
Free temp.measurement
(DH Return HE2)
Free temp.measurement
(Meas. 11)
12345678910 11
2x0,8
T1
2x0,8
T2
2x0,8
T3
2x0,8
T4
2x0,8
T5
2x0,8
T6
2x0,8
T7
2x0,8
T8
2x0,8
T9
2x0,8
T10
2x0,8
T 11
TMO Meas.1
Meas. 2
Meas. 3
Meas. 4
Meas. 5
Meas. 6
Meas. 7
Meas. 8
Meas. 9
Meas. 10
Meas. 11
TMR
TMW / TMS
TMW / TMS
TMW / TMS
0...10V
TMW / TMS
TMW / TMS
TMW / TMS
TMW / TMS
TMW / TMS
TMW / TMS/
PUTTING SENSOR INTO USE AND REMOVING IT FROM USE:
If the outdoor sensor is not connected, the regulator assumes that the outdoor temperature is 0°C
and a sensor fault message appears on the display (Outdoor temp err). When the outdoor sensor
is connected, the regulator automatically takes it into use. After adding other sensors you must go to
start function! (See page 17)
Out temp.
H1 Supply
H1 Room
H1 Ret.water
H2 Supply
Cold water
H2 Room
E-comp.meas.
Network pressure
HW supply
HW circul.wat
H2 Return
DH ReturnHE3
DH ReturnHE2
DH m3
Inst. l/s
DH Mwh
Inst. KW
Wat m3
Actuator H1
Actuator H2
Actuator HW
Outdoor temperature
Supply water temperature in regulating circuit H1
Room temp. in regulating circuit H1 (room comp.)
Return water temperature in regulating circuit H1
Supply water temperature in regulating circuit H2
Free measurement; name using the text editor
Room temp. in regulating circuit H2 (room comp.)
E-compensations meas. data (% of the sensors meas. area)
Pressure in the heating network
HW (domestic hot water) supply water temp.
Temp. of HW return water in heat exchanger.
(an anticip. sensor is used in the HW heat
exchanger to improve the setting results)
Free measurement; name using the text editor
Free temperature measurement that can be
labelled or a measurement that controls the burner
and/or heating resistor.
Free measurement; name using the text editor
Measured consumption of DH water (m3)
Momentary district heating water consumption (l/s)
Measured energy consump. of DH water (MWh)
DH energy consumption in kW (5 min. period)
Measured water consumption of facility (m3)
Actuator position in regulating circuit H1
Actuator position in regulating circuit H2
Actuator position in regulating circuit HW

OUMAN EH-203
10
SUPPLY WATER INFORMATION
KEYWORDS:
H1 Info water
H2 Info water
H1 SUPPLY TEMP:
Follow curve 35.5/
Autumn dry 4/
OutdoorDelay .=-2/
Max lim.eff.=0/
Min lim.eff.=0/
Result=37.5
H1 Supply temp°C
Follow curve
Parall.shift
E-compens.
S-compens.
Reduced temp
Pre-increase
Autumn dry
OutdoorDelay
½ exhaust
Max lim.eff.
Min lim.eff.
Ret.wat.lim.
DH outp.lim
DH Ret wat lim
Stand-by
Result
H1 Supply temp°C
Follow curve 35.5
Autumn dry 4
Outtemp.slow 2
Max lim.eff 0
Min lim.eff 0
Result =37.5
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
temperature according to the characteristic heating curve.
EXAMPLE
In the example, the supply water temperature according to the curve is 35.5 °C.
Autumn drying raises it 4 °C. The outdoor temperature measurement delay drops
the supply water temp. 2 °C. As a result, the regulator determines that the supply
water temperature is +37.5 °C. (35.5+4-2=37.5).
Supply water temp.aat the present outdoor temp. according to the curve.
The effect of a parallel shift on the supply water temperature.
Room comp.: Effect of room compensation on supply water/
RoomCompNigh: Effect of room compensation on supply water during
reduced operation.
Effect of E-compensation on supply water.
Effect of S-compensation on supply water
Effect of clock controlled reduced operation mode on supply water
(or a drop controlled by a home/away switch or remote control)
Effect of pre-increase on supply water after reduced operation mode.
Effect of automatic autumn drying on supply water.
Effect of outdoor temperature measurement delay on supply water.
Effect of exhaust fan at ½ power on supply water.
Supply water temperature drop due to maximum limit.
Supply water temperature increase due to minimum limit.
Effect of return water limits on supply water.
Effect of district heat power limit or ow limit on regulating circuit H1 supply water.
Effect of DH return water limits on supply water.
Effect of free temperature drop on supply water.
Present supply water temperature (°C) determined by the controller.
H1 Select
Heating curve
Settings
Measurements
Info water temp
DH Energy meas.
H2 Automatic
H1 Automatic
Outdoor -15°C
SupplyTemp52°C
Selection
Press the button to browse factors which determine the supply water
temperature.
Exit with ESC.
Press the button to move cursor to ”Info water temp”. Press OK.
OPERATING INSTRUCTION:
Press ESC until the display no longer changes.
You are then in the ”Selection” display shown in the adjoining picture.
Use the button to move from one regulating circuit to the next (H1, H2).

OUMAN EH-203
11
DH Energy meas.
05.10.2010
DH Supply
102.30°C
DH Return
41.50°C
DH Energy
18500kWh
DH Water
3550m3
ID171226240521
DISTRICT HEATING ENERGY MEASUREMENT
KEYWORDS:
DH Energy
Measurements*)
DH ENRGY:
DH Supply 102.30°C/
DH Return 41.50°C/
DH Energy 18500kWh/
DH Water 3550m3/
ID171226240521
Measurement information from the district heating energy meter can
be read to the Ouman EH-203 by using EMR-200 read head (optional
equipment).
EMR-200 compatible energy meters:
Kamstrup Multical 66
Kamstrup Multical 401
Kamstrup Multical 402
Kamstrup Multical 601
DH Supply: Measured district heating supply water temperature (°C)
DH Return: Measured district heat return water temperature (°C)
DH Energy: District heating energy consumption meter reading (kWh)
DH Water: District heating water consumption as a meter reading (m3)
ID: District heating meter identication code reading from
the district heating meter.
If “-“ appears in place of the measurement value, the controller has not
read the measurement information in question. The reason for this may
be that the energy meter does not support this measurement.
“Momentary output” and “Momentary ow” energy meter measurements
can be read from the controller’s Measurements menu.
Use the key word ”DH ENERGY” to receive via text message the same measurement information that is in the
controller’s menu. The same text message can be automatically sent monthly on a selected day to two different
GSM numbers. (e.g., a report to the electric company and caretaker). Instructions on p. 34 Energy meter.
*)Use the keyword ”Measurements” to obtain information about the facility’s district heating output and water consumption.
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).
Measurement information can be read from the controller’s display and it
can also be read from the net or as text messages, if these functions have
been taken into use.
H1 Select
Heating curve
Settings
Measurements
Info water temp
DH Energy meas.
Operat. modes
H2 Automatic
H1 Automatic
Outdoor -15°C
SupplyTemp52°C
Selection
Press the button to browse measurement information received from
the district heating energy meter.
Exit with ESC.
Press the button to move cursor to ” Energy meas.”. Press OK.
OPERATING INSTRUCTION:
Press ESC until the display no longer changes.
You are then in the ”Selection” display shown in the adjoining picture.

OUMAN EH-203
12
HW Operat.modes
Automatic oper.
No temp. incr.
Contin.incr.
Manual mech.
Manual electr.
Manual electr.
Control ---
Position: 39%
Operat. modes
row 13
Działający tryb
row 386
O1 Tryby pracy
OPERATING MODES
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.
Press the button to move cursor to “Operat. modes”. Press OK.
Press the button to browse operating modes.
The character indicates which operating mode has been selected.
Changing operating mode: Move the cursor to the operating mode that you
want. Press OK. Exit with ESC.
Manual operation of actuator mechanically:
No electricity to actuator.
Only mechanical manual operation of actuator is possible.
Manual operation of actuator electrically: Press OK.
Press the -or +button to change the position of the actuator.
The direction the actuator is being run can be seen from the display.
The position’s %-reading indicates the actuator`s position if a voltage
controlled 0...10V or 2...10V actuator (0% = closed, 100% = open) is
being used. Conrm the actuator position by pressing OK.
The valve can also be connected so that 100% is closed.
Operating modes in domestic hot water regulating circuit (HW):
Press the button to move to the HW circuit. “No temp. incr.” and “Contin. incr.”
can be selected from control modes after the amount of temperature increase has
been given in maintenance mode settings (See p. 23 “HW increase”).
Additional information about operating modes in heating regulating circuits H1 and H2:
Automatic
control:
Nominal
operat. mode:
Reduced
operat. mode:
Stand-by
Room temperature
Supply water
Temperature drops occur according
to the clock program.
The regulator keeps a nominal
temperature on disregarding
the clock program.
Continuous reduced tem-
perature (nighttime drop)
is on regardless of the
clock program.
Free supply water tem-
perature drop down to the
freeze protect limit (stand-
by function).
KEYWORDS:
H1 Operat.modes
H2 Operat.modes
DHW Settings
H1 Operat.modes:
*Automatic/
Nominal oper./
Reduced oper./
Manual electr.
open=000%/
Manual electr.
closed=000%/
Valve ushing/
H1 Operat.modes
Automatic oper.
Nominal oper.
Reduced oper.
Stand-by
Manual mech.
Manual electr.
H1 Select
Heating curve
Settings
Measurements
Info water temp
DH Energy meas.
Operat. modes
Clock functions
OPERATING INSTRUCTION:
Press ESC until the display no longer changes.
You are then in the ”Selection” display shown in the adjoining picture.
Use the button to move from one regulating circuit to the next (H1, H2, HW).
HW
H2 Automatic
H1 Automatic
Outdoor -15°C
SupplyTemp52°C
Selection

OUMAN EH-203
13
Time/ Date
15:45 hr:min
29/03 da/mo
2012 Thursday
Time/ Date
15:45 hr:min
29/03 da/mo
2012 Thursday
Time/ Date
15:45 hr:min
29/03 da/mo
2012 Thursday
CLOCK FUNCTIONS Setting the time
The Ouman EH-203 regulator’s clock registers summer time and
standard time changes and leap years.
The battery lasts approx. 10 years.
The cursor is at “Time/Date”. Press OK.
Set the time:
The cursor is at time. Press OK.
The hours blink. Press the -or + button to set the hours. Press OK.
The minutes blink. Press the -or + button to set the minutes. Press OK.
Set the date: Press OK.
The day blinks. Press the -or + button to set the day. Press OK.
The month blinks. Press the -or + button to set the month. Press OK.
Set the year and weekday: Press OK.
The year blinks. Press the -or +button to set the year. Press OK.
The weekday blinks. Use the -or +button to set the weekday. Press
OK.
Exit with ESC.
Clock functions
Time/ Date
H1 drop program
H2 drop program
Setting the time happens in the following manner
H1 Select
Heating curve
Settings
Measurements
Info water temp
DH Energy meas.
Operat. modes
Clock functions
Language/ kieli
HW
H2 Automatic
H1 Automatic
Outdoor -15°C
SupplyTemp52°C
Selection
Press the button to move cursor to “Clock functions”. Press OK.
OPERATING INSTRUCTION:
Press ESC until the display no longer changes.
You are then in the ”Selection” display shown in the adjoining picture.

OUMAN EH-203
14
00:00 IncrOnHW
_ _ _ _ _ _ _
00:00 Incr Off
_ _ _ _ _ _ _
19:30 DropOnH1
_ _ _ _ _ _ _
00:00 Drop Off
_ _ _ _ _ _ _
Clock programs - browsing, adding, deleting
With the freely programmable 24 hour/7 day clock you can:
1. Drop the temp. for certain lengths of time (heat. circuits H1 and H2)
2. Increase the domestic hot water temp. (anti-bacteria function)
3. Time control the desired on/off connections with two relays (eg.
ventilator, outdoor lights, sauna stove, outside doors, see p. 15).
DELETING THE PROGRAM BLOCK:
You can delete the program block inside the brackets by deleting the
weekdays in that program block with the - button.
Domestic hot water increase program:
Clock programming occurs in the same way as the temperature drop
clock program.
Clock functions
Time/ Date
H1 drop program
H2 drop program
R1 time program
R2 Control
HW temp.incr.
00:00 DropOnH1
- - - - - - -
00:00 Drop Off
- - - - - - -
19:30 SänkPåV1
- - - - - - -
00:00 Drop Off
- - - - - - -
19:30 DropOnH1
MoTuWeThFr_ _
00:00 Drop Off
- - - - - - -
19:30 DropOnH1
MoTuWeThFr_ _
04:30 Drop Off
- - - - - - -
MoTuWeThFr _ _
04:30 Drop Off
MoTuWeThFr _ _
00:00 DropOnH1
_ _ _ _ _ _ _
00:00 Drop Off
_ _ _ _ _ _ _
etc.
Press the button to move cursor to the regulating circuit (or relay control circuit)
whose time controls you want to access (browse, add or delete). Press OK. Relay
time control is in use when the relay in question is reserved rst for time or time/
outdoor temperature control (see p. 26-27)
HW increase is in use when the amount of the HW increase has been set in the
special maintenance mode, (see p. 23)
Browse/ location for additional programming:
Press the button to browse the clock programs which have been made. If you
want to make additional programs, move cursor to rst empty program block.
Set the start time for the temp. drop program: Press OK.
Temperature drop start time hours blink.
Press the -or + button to set hours. Press OK.
Minutes blink. Press the -or + button to set minutes. Press OK.
Set the weekdays (when the start time is effective)::
Press the -or +button to select weekday.
The day is left unselected/ press the --button to delete the selection.
The selection shown on the display is taken into use with the OK button.
Make your selection for each day and press OK.
Set the end time for the temp. drop program: Press OK.
Hours blink. Press the -or +button to set hours. Press OK.
Minutes blink. Press the -or +button to set minutes. Press OK.
Set the weekdays (when the end time is effective):
Press the +button to select weekday.
The day is left unselected/ press the -to delete the selection.
The selection shown on the display is taken into use with the OK button.
Make your selection for each day and press OK.
There is always one program block inside the brackets (drop on and off).
The cursor moves to the beginning of the next program block (new brackets).
Continue programming as before or exit withESC.
n the example the drop is in effect during the workweek between 19:30 and
4:30. On the weekend the drop begins on Friday evening at 19:30 and
ends on Monday morning at 4:30.
HW temp.incr.
H1 Select
Heating curve
Settings
Measurements
Info water temp
DH Energy meas.
Operat. modes
Clock functions
Language/ kieli
HW
H2 Automatic
H1 Automatic
Outdoor -15°C
SupplyTemp52°C
Selection
Press the button to move cursor to “Clock functions”. Press OK.
OPERATING INSTRUCTION:
Press ESC until the display no longer changes.
You are then in the ”Selection” display shown in the adjoining picture.

OUMAN EH-203
15
Clock functions
Time/ Date
H1 drop program
H2 drop program
R1 time program
R2 Control
HW temp.incr.
R1 Styrning
Tidstyrning
Ständig ON
Ständig OFF
Timer ON 0m
Timer OFF 0m
Clock functions; relay control
I display:
Relays can control many different functions, e.g., sauna stoves,
locking doors etc. Relay clock functions are taken into use and
labeled according to use in the relay control mode. (see p. 26 and
27). Then the relay can be controlled using a GSM, if a GSM-modem
has been installed into the regulator (optional equipment).
Press the button to move cursor to indicate the relay control (R1 or R2)
whose controls you want to access. Press OK.
If the relay reserved for time control has been labeled, R1 (R2) it will indi-
cate what the relay is reserved for (e.g., sauna, outside doors)
00:00 Relä1 PÅ
- - - - - - -
00:00 Relä1 AV
- - - - - - -
Set the time for the relay to be activated and the
days of the week for the relay to be activated.
In addition, set the time for the relay to be inacti-
vated and the days of the week for the relay to be
inactivated.
Press the -or + -button and conrm the time on the timer by pressing
OK.
The relay can be used to switch an electric apparatus on and off at desired
times. When the time program is in the “ON” mode the relay is activated. In
this mode the time (time and weekday) is set for the relay to be activated
and the time (time and weekday ) is set for the relay to be inactivated. Time
programming is done in the same way as L1 drop program time programming
(see prev. p.). The regulator can be programmed for a maximum of 7 program
series (on/off series) per relay.
The relay’s time program is not in use. The relay is in a forced ON mode (=
relay is activated).
The relay is in a forced Off mode (= relay is inactivated).
The relay’s time program is temporarily replaced by a timer. The relay is in
the ON mode (= activated) for a set time (range 0…999min), after which the
relay switches to a time programmed mode. Press the or + button to change
the time on the timer. The amount of time left on the timer appears on the
display.
The relay’s time program is temporarily replaced by a timer. The relay is in
the OFF mode (= is inactivated) for a set time (range 0…999min), after which
the relay switches to a time programmed mode. Press the or + button to
change the time on the timer. The amount of time left on the timer appears
on the display.
Time program:
Continuous ON:
Continuous OFF
Timer ON
Timer OFF
Relays
KEYWORD:
Explanation:
RELAY1:
(Time program/
ON/OFF/ Timer
ON 59 min/
*Timern OFF=
59 min)
H1 Select
Heating curve
Settings
Measurements
Info water temp
DH Energy meas.
Operat. modes
Clock functions
Language/ kieli
HW
H2 Automatic
H1 Automatic
Outdoor -15°C
SupplyTemp52°C
Selection
Press the button to move cursor to “Clock functions”. Press OK.
OPERATING INSTRUCTION:
Press ESC until the display no longer changes.
You are then in the ”Selection” display shown in the adjoining picture.

OUMAN EH-203
16
Type-info
OUMAN EH-203
Version x.xx
00122611
Language/Keel
English
Eesti
LANGUAGE
TYPE INFORMATION
OUMAN EH-203
The Ouman EH-203 regulator is in two languages. The regulator has the
most commonly used languages, Finnish - Swedish, English-Estonian, Eng-
lish-Russian, English-Polski and English-Lett. The language of the regulator
can be changed in the following manner.
Press the button to move the cursor to the language you want to use.
Press OK.
Type information indicates which regulator is in question and which pro-
gram version is in use. There are two heating circuits and one domestic hot
water regulating circuit in the Ouman EH-203 regulator.
Ouman Oy invests strongly in continuous product development. The version
number informs the producer which version is in question.
The serial number is connected to the production process so the manufacturer
can determine exactly which controller is in question.
H1 Select
Heating curve
Settings
Measurements
Info water temp
DH Energy meas.
Operat. modes
Clock functions
Language/Keel
Type info
H1 Select
Heating curve
Settings
Measurements
Info water temp
DH Energy meas.
Operat. modes
Clock functions
Language/Keel
Type info
Start function
H1 Automatic
Outdoor -15°C
SupplyTemp52°C
Selection
H1 Automatic
Outdoor -15°C
SupplyTemp52°C
Selection
Press the button to move cursor to “Language/ Keel”. Press OK.
Press the button to move cursor to “Type information”. Press OK.
OPERATING INSTRUCTION:
Press ESC until the display no longer changes.
You are then in the ”Selection” display shown in the adjoining picture.
OPERATING INSTRUCTION:
Press ESC until the display no longer changes.
You are then in the ”Selection” display shown in the adjoining picture.

OUMAN EH-203
17
START FUNKTION - 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. It is
possible to change the heating regulating circuit (H1 and H2) to a
self-learning regulator.
The start function also activates the sensor’s fault alarms.
The basic regulator controls the supply water temperature accord-
ing to the set heating curve.
The self-learning regulator automatically changes the characteristic
heating curve according to the feedback from the room sensor. The
self-learning maximum adjustment is 10%. The letter i on the heat-
ing curve display indicates that self-learning is in use.
H1 Select
Heating curve
Settings
Measurements
Info water temp
DH Energy meas.
Operat. modes
Clock functions
Language/ Keel
Type info
Start function
Start function
H1 Basic regul
H1 Self-learn
H1 Not in use
H2 Basic regul
H2 Self-learn
H2 Not in use
HW Regulator
HW not in use
Taking sensors into use and deleting sensors:
If you connect a sensor to the controller or disconnect a sensor from the
controller, you must go to start function and then the controller will take
sensors into use or delete them.
Press the button to move the cursor to “Start Function”. Press OK.
The controller identies sensors that have been connected and discon-
nected and displays control modes that can be selected. If you do not
want to adjust the control mode, you can press ESC to exit from the
control mode display without making changes. The regulator’s factory
setting is a basic regulator.
Browsing:
Press the button to browse the possible regulator types in each
regulating circuit. Exit with ESC.
The character indicates which regulator types have been selected
from the different regulator circuits.
Changing the regulator type:
Press the button to move the cursor and press OK.
Self-learning occurs if the room temperature varies at least 1 °C from the
set value when the outdoor temperature is in a +5... -5 °C or -15... -25 °C
range for at least 4 hours.
Automatic adjustment of the characteristic heating curve occurs at 0 °C or
-20 °C. The adjustment rate is 1 °C in 4 hours. The maximum adjustment
of the set curve is +/- 10%. If the characteristic heating curve setting is
changed, self-learning starts from the beginning.
The room sensor (TMR) has to be in use in order for self-learning to take
place. The self-learning setting must not be used if the room compen-
sation unit (TMR/P) is in use. Self-learning does not function during a
temperature drop.
Examples of self-learning function:
If the outdoor temperature is between -15... -25 °C, self-learning occurs
at the characteristic heating curve’s -20 °C setting. For example, if the
setting value is 58 °C, the self-learning area is 52... 64 °C (+/- 10% of
the set value).
If the outdoor temperature is between -5... +5 °C, self-learning occurs
at the characteristic heating curve’s -0 °C setting. For example, if the
setting value is 41 °C, the self-learning area is 37... 45 °C (+/- 10% of the
set value).
TMR TMR/P
Indicates that self-learning
is in use.
H1 Curve:i
-20 = 58°C
0 = 41°C
+20 = 18°C
°C
20
20
35
50
65
80
0-20
H1 Curve:i
-20 = 58°C
0 = 41°C
+20 = 18°C
°C
20
20
35
50
65
80
0-20 Self-learning
area
SELF-LEARNING
INFORMATION:
HW
H2 Automatic
H1 Automatic
Outdoor -15°C
SupplyTemp52°C
Selection
OPERATING INSTRUCTION:
Press ESC until the display no longer changes.
You are then in the ”Selection” display shown in the adjoining picture.

OUMAN EH-203
18
ALARMS!
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. If a GSM modem has
been connected to the regulator, the alarm will appear in the desired GSM phone as a text message.
In case of sensor fault, the regulator gives an alarm and a message appears on the display:
Alarm! Measurement number and name and err. The alarm relay contact closes (strip con-
nectors 31 and 32).
The regulator gives a deviation alarm if the supply water temp permanently deviates (facto-
ry setting 60 min) from the temp set for it by the regulator. (The maximum allowed deviation
is listed in special maintenance under ”H1 Dev. alarm” settings and the duration of the devi-
ation that causes the alarm to go off is under settings ”DevAlaDela”, page 29.)
Note! H1/H2 deviation alarms do not go off when 1) the pump is on summer stop, 2) the
valve is shut for the summer, 3) the controller is in a stand by state, 4) the supply water
temperature is just slightly (max.10°C) above the outdoor temperature and the supply water
temperature is higher than the set value or 5) the outdoor temperature is more than +5 °C
and the supply water temperature is higher than the set value but less than +30°C.
If the HW supply water temperature exceeds the HW alarm limit (factory setting 65 °C), the
alarm goes off. The present supply water temperature appears on the display. The alarm
relay contact closes (strip connectors 31 and 32). See ”Settings”, page 23.
If measurement 6 is reserved for measurement of water pressure in the network, the control-
ler gives an alarm if the pressure is too high or too low (ll alarm) and if there is no pressure
(lower limit alarm, see p. 31). External alarms can also be connected to EH-203, e.g., a
pressure alarm can taken as contact information from the pressure meter giving the alarm.
(Alarm labelling is done using the text editor).
If pulse information from the facility’s water meter is connected to digital inputs, it is possible
to monitor possible leaks in the hot water network (see p. 32).
The regulator gives a risk of freezing alarm if the supply water temperature goes below the
lower limit set for a free drop in the supply water or the lower limit set for the room tempera-
ture. The present supply water temperature appears on the display. The alarm relay contact
closes (strip connectors 31 and 32). See special maintenance settings page 29.
Alarm!
13/10 11:03
Measurement 1
Outdoor temp err
Sensor fault alarms:
Deviation alarm!
15/5 08:54
Measurement 2
H1 supply 25
Deviation alarm:
Overheating!
07/03 13:17
Measurement 7
HW supply 78
HW overheating alarm:
Fill alarm!
23/06 13:24
Measurement 6
Netw.press. 0.6
Network pressure alarm:
Consumpt.alarm!
06/1 03:08
Dig 1
Consumption alarm:
Risk of Freez!
13/11 13:24
Measurement 6
H1 supply 11
Risk of freezing alarm:
EXTERNAL ALARMS:
Measurements 6, 9, 10 and 11
as alarms:
Measurements 6, 9, 10, and 11 can also be used to indicate external alarms (potential
free switch). In that case a 30k9 resistor must be connected to the strip connector of the
measurement in question.
The regulator’s three digital inputs can be used for receiving alarms. The alarms can be la-
beled according to topics, e.g., “water damage” (installation p. 32). When the contact which
is connected to the digital input closes, an alarm goes off and “err” appears on the display.
If the alarm is not labeled, “Alarm!, Dig 1(2)(3) will appear on the display. In the event of an
alarm, the alarm relay contact closes (strip connectors 31 and 32)
Turn the alarm off by pressing any button. The display will return to the mode it was in before the fault ap-
peared or if there are additional sensor faults their alarm information will appear on the display. If you don’t
press the keyboard in 20 seconds the alarm will return to the display if the fault has not been corrected.
Note! If a MODBUS 200 is connected, the alarm is acknowledged automatically locally (the alarm will stop
sounding, the alarm relay will open and the alarm display will disappear)!
The GSM modem (optional equipment) offers an economical “miniature monitor solution”. Alarm informa-
tion is directed to the desired GSM numbers (1 and 2). See p. 39, 40). In the event of an alarm, the regula-
tor rst sends a text to GSM1 that indicates the cause of the alarm. The alarm is acknowledged when the
same message is sent back to the regulator via the GSM. If the GSM1 does not acknowledge the alarm
in 5 minutes, the regulator will send the text message again to both GSM numbers.
Opening alarm:
When the contact is closed “1” appears on the display. When the
switch open, an alarm goes off and the alarm in question appears
on the display.
Closing alarm:
When the contact is open “1” appears on the display.
When the switch closes, an alarm goes off and the alarm in ques-
tion appears on the display.
30kΩ
30kΩ
“Risk of moisture”
”Wastewater tank”
”Thermal relay!”
”Water pressure”
Digital inputs as alarms:
CONNECTING THE ALARM
RELAY:
ALARM
ACKNOWLEDGE-
MENT:
31
32
2x0,8
Larmcentral

OUMAN EH-203
19
GSM- FUNCTIONS
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. These include measurements, settings, heating curve settings,
supply water information and the regulator’s operating mode. Clock programs can be bypassed permanently
or for certain periods of time. Alarms are also directed to a GSM phone. They can be acknowledged by sending
the alarm message back to the controller.
COMMUNICATING WITH THE CONTROLLER USING A GSM:
Send the following text message to the regulator: KEYWORDS
If the controller has a device ID (p. 39, 40), always write the device
ID before the key word (e.g., TC1 KEYWORDS). The controller will
send a list of key words via text message, which will help you obtain
information about how the controller operates. Each key word is
separated by a / character.
Note! The key word DH Energy does not appear when using the key word in-
quiry.
Receiving information from the controller:
Send a text message to the regulator using key words that it provides you. The
regulator recognizes only one request at a time, so write only one key word / mes-
sage. You can write the key word using capitals or small letters. (If the regulator
has a device ID (see p. 39, 40), write the device ID in front of the key word.)
The controller answers your request by sending the desired information.
Operating the controller using a GSM:
With the GSM phone you can adjust heating curve settings, user level settings,
the controller’s operating mode, or time-controlled relay operation.
Send the controller a text message. Using key words, request information about
the function whose settings you want to adjust (or obtain the information from your
telephone’s memory). Adjust the settings in the text message that the controller
sent. Send a text message with the new settings to the controller. The controller
will make the requested adjustments and acknowledge them by sending back a
text message with the new settings.
Instruction for adjusting settings
Write the desired supply water temperature in place of
the previous setting in the text message “adjust”
mode.
Write the setting in place of the previous setting.
Put a star (* ) in front of the operating mode which you
want to start using. When you select manual operating,
regulator sends information about the supply water
temperature and valve positions (0 - 10V controlled
actuators). Attention! When using electric manual con-
trol, special caution has to be taken because of dan-
ger of freezing and overheating. During the valve ush
function, the regulator rst opens and then closes the
valve. After this automatic regulation continues. The
purpose of this function is to clean out a plugged up
valve.
A GSM can be used to control the relay only if the relay
is being time controlled. Place a star (* ) next to the
control mode that you want to begin using. In time con-
trol you can also set the length of time it is in effect
(range 0…999 min).
Keywords:
Heating curves
H1 Settings
H1 Operat.modes
Relays
KEYWORDS:
Measurements/
Heating curves/
Relays/
H1 Settings/
H2 Settings/
DHW Settings/
H1 Operat.mode/
H2 Operat.mode
H1 Info water
H2 Info water
H1 CURVE:
(-20=58
0=41
+20=19)
H2 CURVE:
(-20=59
0=42
+20=21)
MEASUREMENTS °C
H1 Supply=52/
H1 Room=21.2/
H1 Ret.water=28/
Outdoor=-15/
H2 Supply=48/
…
H1 Operat.modes:
*Automatic/
Nominal oper./
Reduced oper./
Manual electr.
open=000%/
Manual electr.
closed=000%/
Valve ushing/
RELAY1:
(Time program/
ON/OFF/ Timer
ON 59min/
*Timer OFF=
59min)
…
H1 Settings
Room temp.=21,5/
Temp drop(w)=0/
Min. limit=15/
Max. limit= 70/
Room compens.=4/
Pre-increase= 0/
Autumn dry= 2/
..
If a district heating
energy meter is
connected to the cont-
roller, measurement
information from the
energy meter can be
obtained by using the
key word
DH Energy.
You can acknowledge an alarm with a GSM by sending the same message back
to the regulator.
Acknowledging alarms:
Ouman house
Alarm: Dig1/
Wastewater tank

20
The maintenance person’s maintenance
guide begins here (p. 21 - 48).