OUMAN EH-201/L
Addit. inform. about digital inputs
OUMAN EH-201/L
Alarm Dig 1
Exhaust ½pwr
Home/away
Pump1 th.relay
DH Energy MWh
DH Water
m3
Watr consmp. m3
GeothHeatCtrl
Alarm switch information. When the switch is closed an alarm goes off.
Exhaust fan ½ speed information. When the switch is closed the exhaust fan is at ½
speed.
Away switch information. (switch closed, reduced temperature mode is on).
Pump 1 thermal relay switch information. When the switch is closed pump 1 does not
run. In that case the regulator starts the parallel pump and gives an alarm if r elay 2
is connected to alarms.
Pulse information from the district heat energy meter.
Pulse information from the district heat water meter (m ).
Pulse information from the facility water meter
.
When relay 1 is used for geothermal heating control, the geothermal heating selector
switch (start up / automatic) is connected to strip connectors 21-22
.
When
The information is used to lower the heat when the exhaust fan is at ½
speed. The amount of the drop is given in special maintenance settings. (p. 28, ½ exhst)
(m )
(see pages 26 - 27)
the switch opens the dig 1 space. In automatic position strip
connector 21 - 22 is closed.
3
3
starting up
Select full effect or limited effect geothermal heating in
relay 1 control selection and after this selection you can change the settings that switch
the compressor and heating resistor on and off.
Explanation:
On the display:
ESC - press to return to the previous display
Info button - gives operating instructions
Browse button - moves the cursor up and down
ESC
Group select button - not in use in EH201/L
Start up:
Automat function:
The geothermal heating unit's accumulator is heated to the "Accumulator." setting temperature with the help
of the compressor. The heating resistor cannot be on. Position of the geothermal heating unit selector switch: Start
up (the switch opens the dig 1 space)
The EH-201/L regulator attempts to keep the temperature of the accumulator at the
"Accumulator" temperature (meas.10) set by the user by controlling the compressor or heating resistor following manner:
Function and temperature limits
The state of relay Strip connector
relay 2 is active
relay 2 is inactive
relay 2 is inactive
relay 1 is inactive
relay 1 is active
71-72 closed
71-72 open
71-72 open and
73-74 closed
73-74 open
Compressor is switched on,
Compressor is switched off,
Compressor is switched off and heating resistor is switched on,
Heating resistor is switched off,
when
-the accumulator's temp. drops to the ["GeothHeatAcc" setting - "Hysteresis"] temperature
when
- the accumulator's temperature rises to "GeothHeatAcc" (measurement 10) temperature
when
the accumulator's temp. drops to the ["GeothHeatAcc" setting - "Hysteresis" - 10 °C] temp.
The accumulator`s temp has to stay 20 min under this level before the heating resistor is switched on
when
the accumulator's temp. rises to ["GeothHeatAcc" setting - "Hysteresis" + 2°C] temperature
Start up function
Automat function:
works same way than automat function, but heating resistor is not able to switched on.
The compressor can switch on according the accumulator upper part temperature (meas. 9) or
accumulator lower part temperature (meas. 10) if the temperature of the accumulator lower part is under 55°C
(maximum allowed accumulator lower part temperature). The heating resistor also switched on according t the
temperature of accumulator upper part (measurement 9), if the effect for the compressor is not sufficient.
Functions and temperature limit s
The state of relay Strip connector
relay 2 is active
relay 2 is inactive
relay 1 is inactive
relay 1 is active
71-72 closed
71-72 open
73-74 closed
73-74 open
Compressor is switched on,
Compressor is switched off,
and
and
Compressor is
switched off,
Heating resistor is switched on,
Heating resistor is switched off,
when
- the accumulator's upper part temp. drops to ["GeothH.UpPart" setting - "GeothH.UpHyst"] or
- the accumulator's lower part temperature drops to ["Supply water temperature determined by
regulator" + 5°C - "GeothH.LowHyst"] or
- the accumulator's lower part temperature drops to "GeothH.LowMin"
when
- the accumulator's upper part temperature reach "GeothH.UpPart" (meas. 9)
- the accumulator's lower part temp. reach ["Supply water temp. determined by regulator" + 5°C]
- the accumulator's lower par t temperature is over ["GeothH.LowMin" + "GeothH.LowHyst"]
when
- the accumulator's lower part temp. rises to 55°C (accumulator's lower part max. allowed temp.)
when
- the accumulator's upper part temp. drops to ["GeothH.UpPart" setting - "GeothH.UpHyst" - 3 °C]
when
- the accumulator's upper part temp. reach ["GeothH.UpPart" setting - "GeothH.UpHyst" + 2 °C]
always
A. Full effect geothermal heating:
Additional information about geothermal heating:
B. Limited effect geothermal heating:
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