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).