TControl Easy DX-Air Curtain (Item No. 189421)
Room thermostat for DX air curtain
SYSTEMAIR GmbH Germany
Issue date: 03.11.2020
Page 6 / 11
The analog 0..10 V output for the EC fan in automatic mode outputs the voltage value according to the control value of the controller. For manual
switching, the following voltage values apply to the EC output:
Fan stage
Voltage
Parameter
OFF
0V
(Speed level 1) LOW
3,3 V
Reg. 0x124, default = 33
(Speed level 2) Medium
5,2 V
Reg. 0x125, default = 52
(Speed level 3) High
7,5 V
Reg. 0x126, default = 75
°F/°C selective
Temp display range is 32 °F..99 °F, respectively 0 °C..50 °C (factory default is °C).
Temperature offset correction (Register address 0x0107)
An adaptation of the measured temperature measured value takes place with the help of the offset correction with which the thermal power loss
can be compensated.
Set the Temperature set point range (Register address 0x0110 – 0x0112)
Press
“▲”or “▼” key
to adjust the temperature set point range. Factory default (°C) is 16 °C..30 °C
，
When °F has been selected Temp range is
60 °F..86 °F.
Key lock selection (Register address 0x010D)
If a key is pressed that is locked, the lock symbol
will appear for 2s and blink 2x but no further action is taken.
Power failure – Restart selection (Register address 0x010C)
On the LCD, there are three symbols
that define how the thermostat will restart after a power failure:
Keep thermostat switched OFF
Switch thermostat to last state before power failure (Record and Memorize)
Turn the thermostat ON
Storage during power loss
The status will be kept in EEPROM, while the power failure, so no data will be lost.
The setpoint is not saved. The standard setpoint after power-on reset applies, register address 271 (0x010F).
Occupancy (OCC)
If the input is configured for an Occupancy sensor. If the sensor indicates “UnOccupied” the current setpoint will be replaced by the Eco Mode
Setpoint Temp. The display will show the leaf symbol and the lettering ECO to indicate the ECO mode. Once the room occupancy is detected
again the previously used Setpoint will be restored and the leaf symbol will not be showing any more.
Sensor failure alarm
In case the room NTC temp sensor is open or short, thermostat switches fan to medium and the valve to 50% (5V output, 50%). The display will
show (blinking) error code: “E1”
Thermostat will allow to control fan manually as well as the valve output using the “▲”or “▼” keys. Every operation
of the “▲”or “▼” key
s will decrement / increment the output voltage by 1V = 10% AND the PWM by 10%. The percentage is shown in the display.