OUMAN EH-201/L
RELAY 2 CONTROL SELECTION
OUMAN EH-201/L
Relay2 ctrl sel
Not in use
Parallel pump
Time program
230V actuator
El.Heater ctrl
ComprGeothHeat
Ei käytössä
If pump 1 stops (the thermal relay is triggered, see digital inputs p. 34-35), the regulator
automatically connects the parallel pump (pump 2) and gives an alarm for pump 1.
(Pump 2 control occurs through connectors 71 and 72.)
L
71
72
When the relay is inactive (timing program "OFF" mode
) the space between contacts
71-72 is open in the relay.
or no electricity to actuator
H1 Maint mode
Tuning values
Settings
Trends
Actuator select
Relay1 control
Relay2 control
Special mainten
Relay 2 is an on / off relay. The following functions can be implemented
with relay 2:
1. Circulation pump control
2. Timing control
3. 230VAC actuator 3-point control (needs both relays)
4. Heating resistor control according to the temperature of meas. 10.
5. Geothermal heating unit compressor control if relay 1 is being used
to control the geothermal heating unit.
Press the
button to move the cursor to the control mode that you want to
use. Press
The
character indicates which control mode is being
used.
OK.
Explanation:
On the display:
Parallel pump
Time program
Not in use
230V actuator
Relay 2 is not being used.
The regulator time controls any electric apparatus using the relay, eg. a sauna stove, door
locks. Timing programming is done in clock functions (p. 15). In the timing program's "ON"
mode the relay is activated.
The control mode can also be changed using a GSM telephone
(see p. 20).
When you have reserved relay 2 for 230V actuator control, the regulator automatically also
reserves relay 1 for 230V actuator control if relay 1 is free. If relay 1 is not free, the regulator
first requests to free relay 1 for 230V actuator control. After this you can begin using
230VAC 3-point control in the "actuator selection" mode (see page 25)
Connection
information:
28
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
When relay 1 has been selected for geothermal heating unit control, the regulator
automatically reserves relay 2 to control the compressor of the geothermal heating unit.
During
the compressor is switched on at the
["GeothHeatAcc." setting - hysteresis] temperature and then relay is activated
is switched off
full effect geothermal heating
(strip
connector 71-72 closed). The compressor
at the "GeothHeatAcc." setting
temperature (see p. 8), and then the relay released (strip connector 71-72 open). The
compressor is turned off and the heating resistor is switched on at the ["GeothHeatAcc."
setting -hysteresis - 10°C] temperature (strip connector 73-74 closed). The heating resistor
is switched off at the ["GeothHeatAcc." setting - hyst 2°C] temperature (strip
connector 73-74 open).
During
the compressor is turned on when the
temperature of the accumulator's upper portion (meas. 9) drops to the ["GeothHeatAcc."
setting - hysteresis] temperature and then relay is activated (strip connector 71-72 closed).
The compressor
(strip connector 71-72 open).
The regulator also keeps the temperature of the accumulator's lower portion (measurement
10) 5°C higher than the supply water temperature (measurement 2) determined by the
regulator by turning the compressor on and off.
Measurement 10 has fixed minimum and
maximum limits (min. +35°C and max. +55°C).
limited effect geothermal heating
is turned off at the "GeothHeatAcc." setting temperature and then relay
released
ComprGeothHeat
Name change
R2 Control
Give new label
Time controlled relay
OK
:
You can label the relay
according to its use. Move the cursor to: Give new
label and press
Use of the text editor is
presented on page 9.
.
El.Heater ON
Hysteresis
50
3
El.Heater ctrl
Switching the heating resistor on and off:
Relay 2 switches the heating resistor on and off
according to the temperature of measurement 10.
The factory setting at which the heating resistor
switches on is 50°C (setting range 5…95°C) and
the hysteresis is 5°C (setting range 1…10°C).
If EH-201/L is used for burner control (see p. 26-27), the regulator can also control the
heating resistor according to the same measurement data (meas. 10). There is a separate
setting for switching on the heating resistor. The heating resistor can be used as an
extra source of heat or the main source of heat depending on whether the setting is
higher or lower than the point at which the burner starts up.
El.Heater ctrl
