OUMAN EH-203
Instructions for setting the curve
OUMAN EH-203
80
65
50
35
20
20 0 -20 °C
EXAMPLES OF DIFFERENT HEATING SYSTEMS:
B) Floor heating
C) Preheating for air conditioning
(H2 circuit, factory setting)
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 setting at 0 C.
In this way you can set the regulating curve to meet the heating needs of your facility.
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o
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INSTRUCTION:
a) Normal radiator network
(H1 circuit, factory setting)
80
65
50
35
20
20 0 -20 °C
80
65
50
35
20
20 0 -20 °C
H2 Curve:
0 = 42°C
+
-20 = 62°C
20 = 20°C
H1 Curve:
0 = 41°C
+
-20 = 58°C
20 = 18°C
H2 Curve:
0 = 27°C
+
-20 = 32°C
20 = 21°C
5
ATTENTION!
HEA
TING
CUR
VES
H1
Curve:
(-20=
;
0=
;
+20=
)
58
41 19
KEYWORDS:
Heating curves
H1 Heating curve
H2 Heating curve
Note! The graphic user
interface cannot display
the 5-point curve.
CURVE INTERPRETATION:
80
65
50
35
20
20 0 -20 °C
H1 Curve:
-20 = 58°C
0 = 41°C
+20 = 18°C
Supply
water
temperature
Outdoor temperature
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
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).
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o
o
o
o
o
o
Attention!
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 sufficient length of time after the settings have been adjusted so the adjustment
has time to effect the room temperature.
5-POINT CURVE:
Supply water °C
+80
+60
+40
+20
Maximum limit
Minimum
limit
Characteristic heating curve
parallel shift
Outdoor
temp.
+20°C
-20°C
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 temperatures 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.
