OUMAN EH-203 User Manual Download

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OUMAN EH-203

Additional information about settings

The room temperature of a house having large
windows with a south exposure rises on a sunny day
even in subzero weather. The reading indicates the
maximum amount that the sun compensation can drop
the supply water temp.

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 7 °C for a period of at least 20 days and after this
drops below 7 °C. Autumn drying is activated during
the next 20 days whenever the average temperature in
a 24-hour period is under 7 °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 limit, 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 resistor (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. 25).

Pump summer stop: Outdoor temperature at which the
regulator 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 regulating 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 temperature is not set below +55°C.

Sun compens.

Pre-increase

Autumn dry

Burner ON

El.Heater ON

Valve close

Pump stop

R1 Temp.lim.

DomHot wat.

Pre-increase time
(A mainten. person set)

Nominal
temperature

Reduced temp.
= night drop

Menovesi

°C

Room temp.

Spared energy

Average temp.
In a 24-hour
(Outdoor temp.)

A time period
of at least
20 days

7 °C

Autumn drying - function on

1 2 3

4 5

6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Time/day

Average 24-hours
temp. curve

0 °C

2 °C

19 °C

55°C

55.0°C

70 °C

50 °C

19 °C

The sun measurement
can only be read from the
net. Sun compensation is
the same for control
circuits H1 and H2.

If heating pump control
has been selected for
relay 1's control
function, this setting
becomes the pump's
summer stop limit.

Pump stop appears in
place of the valve
summer close setting if
heating pump control
has been selected in the
relay 1 control mode (p.
25).
Can be set when relay1
is selected to temp.
operated function (p.26).

Select relay 1 for
burner control.

Select relay 2 for
heating resistor control.

0...-7 °C

0...25 °C

0...15 °C

5...50 °C

5...95 °C

5...50 °C

0...100°C

5.0...95.0°C

SETTINGS

KEYWORDS: