System air TControl Easy DX-Air Curtain Instruction Manual

TControl Easy DX-Air Curtain (Item No. 189421)
Room thermostat for DX air curtain
SYSTEMAIR GmbH Germany [e-mail] oder http://www.systemair.de
Issue date: 03.11.2020 Page 1 / 11
Datasheet
Subject to technical alteration
Issue date: 03.11.2020 • A104
»APPLICATION
The room control unit is used for individual control of DX door air curtains in combination with a Systemair DX outdoor unit for either single split or
VRF2 outdoor units. With its flush mounted modern design the device combines digital technology with a large LCD display and additional buttons,
which enables the single room controller to be used intuitively.. Furthermore, the operating unit has an integrated Modbus interface. The device is
designed for mounting in a flush-mounted box.
»SECURITY ADVICE – CAUTION
The installation and assembly of electrical equipment should only be performed by authorized personnel.
The product should only be used for the intended application. Unauthorised modifications are prohibited! The product must not be
used in relation with any equipment that in case of a failure may threaten, directly or indirectly, human health or life or result in
danger to human beings, animals or assets. Ensure all power is disconnected before installing. Do not connect to live/operating
equipment.
CAUTION! Risk of electric shock due to live components within the enclosure, especially devices with mains voltage
supply (usually between 90..265 V).
Please comply with
•Local laws, health & safety regulations, technical standards and regulations
•Condition of the device at the time of installation, to ensure safe installation
•This data sheet and installation manual
»NOTES ON DISPOSAL
As a component of a large-scale fixed installation, Systemair products are intended to be used permanently as part of a building
or a structure at a pre-defined and dedicated location, hence the Waste Electrical and Electronic Act (WEEE) is not applicable.
However, most of the products may contain valuable materials that should be recycled and not disposed of as domestic waste.
Please note the relevant regulations for local disposal.
»PRODUCT TESTING AND CERTIFICATION
Declaration of conformity
The declaration of conformity of the products can be found on our website https://www.systemair.com/.

TControl Easy DX-Air Curtain (Item No. 189421)
Room thermostat for DX air curtain
SYSTEMAIR GmbH Germany [e-mail] oder http://www.systemair.de
Issue date: 03.11.2020 Page 2 / 11
»REMARKS TO ROOM SENSORS
Location and Accuracy of Room Sensors
The room sensor should be mounted in a suitable location for measuring accurate room temperature. The accuracy of the temperature
measurement also depends directly on the temperature dynamics of the wall. It is important, that the back plate is completely flush to the wall so
that there is sufficient circulation of air through the vents in the cover, otherwise, deviations in temperature measurement will occur due to
uncontrolled air circulation. The temperature sensor should not be covered by furniture or other objects. Mounting next to doors (due to draught)
or windows (due to colder outside wall) should be avoided.
Surface and Flush Mounting
The measuring result is influenced by the thermal characteristics of the wall. A solid concrete wall responds to thermal fluctuations within a room
in a much slower than a light-weight structure wall. Room temperature sensors installed in flush-mounted boxes have a longer response time to
thermal variations. In extreme cases they detect the radiant heat of the wall even if the air temperature in the room is lower for example. The
quicker the dynamics of the wall (temperature acceptance of the wall) or the longer the selected inquiry interval of the temperature sensor is the
smaller the deviations limited in time are.
»TECHNICAL DATA
Measuring values
temperature
Output voltage
terminal 1 | 2
2x 0..10 V for heating and cooling, min. load 10 kΩ
terminal 1 | 3 - terminal 1 | 4
2x 0..10 V for fan, min. load 10 kΩ
Output switch contact
terminal 6 | 8 - Cooling
250 V, max. load. 3 A
terminal 7 | 8 - Heating
250 V, max. load. 3 A
Network technology
RS485 Modbus, RTU, half-duplex, baud rate 4.800, 9.600, 19.200 or 38.400, parity: non (2 stopbits), even
or odd (1 stopbit)
Power supply
Terminal 15 | 16
24 V = (±10%) | 24 V ~ (±20%) SELV
Power consumption
3 W (24 V =)
Measuring range temp.
+1..+50 °C
Accuracy temperature
±1 K (typ. at 21 °C)
Inputs
terminal 9 | 10
input for external sensor
NTC10K
terminal 9 | 11 – Occupancy
input digital for floating contact
terminal 9 | 12 - Defrost
input digital for floating contact
Control functions
set point adjustment +1..+50 °C, (default +16..+30 °C)
Display
LCD 64x41 mm, white background lighting
Enclosure
ABS, pure white
Protection
IP20 according to EN 60529
Cable entry
rear entry
Connection electrical
terminal block max. 1,5 mm²
Ambient condition
-10..+50 °C, max. 95% rH non-condensing
Weight
160 g
Mounting
flush mounted with standard EU box (Ø=60 mm)
*Power supply
When several BUS devices are supplied by one 24 V AC voltage supply, it is to be ensured that all “positive” operating voltage input terminals (+)
of the field devices are connected with each other and all “negative” operating voltage input terminals (-) (=reference potential) are connected
together (in-phase connection of field devices).
In case of reversed polarity at one field device, a supply voltage short-circuit would be caused by that device. The consequential short-circuit
current flowing through this field my cause damage to it.
Therefore, pay attention to correct wiring.

TControl Easy DX-Air Curtain (Item No. 189421)
Room thermostat for DX air curtain
SYSTEMAIR GmbH Germany [e-mail] oder http://www.systemair.de
Issue date: 03.11.2020 Page 3 / 11
»CONNECTION PLAN
Terminal 4 is designed for an additional 2nd fan and outputs the same actuating signal in parallel with terminal 3.
»DISPLAY PANEL

TControl Easy DX-Air Curtain (Item No. 189421)
Room thermostat for DX air curtain
SYSTEMAIR GmbH Germany [e-mail] oder http://www.systemair.de
Issue date: 03.11.2020 Page 4 / 11
»FUNCTION DESCRIPTION
Communication Modbus
Communication-section
1..247
Factory default:
1
Address 0:
broadcast address
Communication-Interface:
RS485
Communication-Protocol:
Modbus-RTU
Baud Rate:
4800 bps / 9600 bps / 19200 bps / 38400 bps (optional)
Factory default:
9600 bps
Parity:
no parity / odd parity / straight parity (optional)
Factory default:
no parity
Data:
8 bit
Stop:
2 bit
During device start-up the version and type number are displayed on the start screen for a short time.
While the fan coil thermostat is communicating via the bus, the communication symbol starts flashing. If the device does not communicate
via the bus, the symbol will be disappear after 10 seconds.
Parameter table
To enter the parameter table, press the “Mode Key for more than 5s. Once the Display comes on, it will prompt for the password (default 111). The
password can be entered digit by digit. Each digit can be increased / decreased using the “▲”or “▼” keys. With the “Mode Key” the next digit will
be selected.
Each parameter can be increased / decreased using the “▲”or “▼” keys. With the “Mode Key” the display will move on to the next parameter.
Once the end of the table is reached the parameter setting will be exited to normal operation.
Nr.
Parameter
Beschreibung
Standardeinstellung
1
Language setting
0= Deutsch 1 = Englisch
0
2
Unit system temperature
0=°C 1=°F
0
3
Sensor-configuration
0=internal sensor 1=external sensor (NTC10K)
1
4
Offset internal temp.-sensor
-5…5
0
5
Offset external temp.-sensor
-5…5
0
6
Dead band
1…100->1…10.0K
20
7
Sound volume button interaction
0…5
5
8
Password configuration menu
0…999
111
9 Behavior after power reset
0=device stays OFF
1=restore state before power reset
2=Turn ON device
0
10
Backlight during interaction
0…100
80
11
Delay backlight after interaction
1…255
15
12
Set point shift range lower limit
0…500->0-50 °C
180
13
Set point shift range upper limit
0…500->0-50 °C
300
14
Fan stage 0->1 threshold
0->1 0…100%->0-10V
5
15
Fan stage 1->2 threshold
1->2 0…100%->0-10V
33
16
Fan stage 2->3 threshold
2->3 0…100%->0-10V
52
17
Fan stage max. voltage value (V)
0…100% -> 0-10V
75
18
Fan stage defrost mode
0…100% -> 0-10V
17
19
Modbus address
1…247
1
20
Baud rate
1=4800 2=9600 3=19200 4=38400
2
21
Parity
0-none 1-odd 2-even
0
22
Stopbit
1=1 Stopbit 2=2 Stopbits
2
23 Restore factory default
Set back to focrory default settings
0=deactivated 1=activated
0

TControl Easy DX-Air Curtain (Item No. 189421)
Room thermostat for DX air curtain
SYSTEMAIR GmbH Germany [e-mail] oder http://www.systemair.de
Issue date: 03.11.2020 Page 5 / 11
»OPERATING MODE
Press the “Mode Key” , to adjust the mode cyclically (Cooling > Ventilating > Auto mode > Heating …).
Standby / ECO / ON
The Power-Button switches the device from Stand-by to ON. In Standby the display is off, but the control loop is actively monitoring the
temperature and will activate the heating output if the room temperature drops below the frost protection threshold.
In case the external sensor is configured as a temperature limiter, the heating valve will be closed in case the threshold value will be exceeded.
Besides the frost protection the device shall monitor a high limit as well in case the external sensor input is configured as a temperature limiter.
This is the case for floor heating systems, where the external sensor is embedded in the floor. In case the floor temperature will exceed a certain
threshold the heating valve shall be closed to avoid damaging the floor or the pipes embedded in the floor.
Pressing the button once switches the display on and the device to ECO mode. In ECO mode it controls the room temperature to the setpoint
predefined by register 275 and 276 (0x0113, 0x0114). The display will show the average of both ECO Setpoint Temperatures (25+18 /2=21,5) and
the leaf symbol to indicate the ECO mode. In ECO mode the setpoint is fixed and the device does not react to any button pressed by the user
besides pressing the Stand-by /ECO/ON button a 2nd time. Then it will switch from ECO to comfort mode. To indicate that the Fancoil thermostat
is in ECO mode it will show the leaf and the word ECO in the display.
In case an occupancy sensor is connected to one of the inputs the mode will change from ECO to Comfort as soon as the input becomes active
and the previously used Setpoint will be restored and the leaf symbol will not be showing any more.
Fan control
If the fan is configured to be 1-stage or 2-stage the selection will be adapted accordingly. In „ventilating mode“, the valves will be closed. If the fan
speed is set to Auto the steps are switched depending on the temperature difference between the setpoint value and the current temperature
value.
In auto mode heating or cooling, the fan level is calculated from the output of the PI loop (control variable).

TControl Easy DX-Air Curtain (Item No. 189421)
Room thermostat for DX air curtain
SYSTEMAIR GmbH Germany [e-mail] oder http://www.systemair.de
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 “▼” keys will decrement / increment the output voltage by 1V = 10% AND the PWM by 10%. The percentage is shown in the display.

TControl Easy DX-Air Curtain (Item No. 189421)
Room thermostat for DX air curtain
SYSTEMAIR GmbH Germany [e-mail] oder http://www.systemair.de
Issue date: 03.11.2020 Page 7 / 11
Input Register
Address
Access
Description
Resolution / Unit
0
0x0000
Read-only
Model identification
0xFF03 = LCF-3AO2DO – 12 Fans
1
0x0001
Read-only
Firmware-Version
e.g. 0x10C0 = 1.0.13
2
0x0002
Read-only
Back-Box type
32 = 3AO2DO
3
0x0003
Read-only
Value of the integrated temperature sensor °C
0…500 -> 0…50,0°C
0,1
°C
4
0x0004
Read-only
fan status
0b00000000 = OFF
0b00000001 = Stage Low
0b00000010 = Stage Medium
0b00000100 = Stage High
0b00001000 = Auto OFF
0b00001001 = Auto Low
0b00001010 = Auto Medium
0b00001100 = Auto High
5
0x0005
Read-only
Output valve actuator heating/cooling
0-100 0 = 0 (Off) …100% (On)
8
0x0008
Read-only
external temperature sensor °C
200…+1000 -> -20,0…+100,0°C
0,1
°C
9
0x0009
Read-only
failure status
0x00=no failure
0x01= control loop temperature sensor alarm
0x02=external temperature sensor high limit Alarm
0x04=external temperature sensor low limit Alarm
0x08= change over sensor missing alarm
10
0x000A
Read-only
External input 1 – terminal 11
0 = Contact Open, 1= contact closed (for window contact, dew
point sensor)
11
0x000B
Read-only
External input 2 – terminal 12
0 = Contact Open, 1= contact closed (for OCC-sensor, keycard
Switch)

TControl Easy DX-Air Curtain (Item No. 189421)
Room thermostat for DX air curtain
SYSTEMAIR GmbH Germany [e-mail] oder http://www.systemair.de
Issue date: 03.11.2020 Page 8 / 11
Holding Register
General settings
Address
Access
Description
Resolution / Unit
Default
256
0x0100
Read-write
Customer set Device location identification
0…65535
1.0
1
257
0x0101
Read-write
LCD Temperature Unit
0=°C
1=°F
0
258
0x0102
Read-write
Beeper Intensity
0=Off
1..5 (Volume)
5
259
0x0103
Read-write
Backlight intensity operated
0..100
1.0
%
80
260
0x0104
Read-write
Backlight intensity for screen saver (Parameter 7)
0..25
20
261
0x0105
Read-write
Backlight operating delay setting
1….255 = 1…255 seconds ON
1.0
s
15
262
0x0106
Read-write
Internal Sensor Temperature Offset
(added to meaured value)
-50…50 = -5,0..+5,0 °C
0.1
°C
0
263
0x0107
Read-write
external Sensor Temperature Offset
(added to meaured value)
-50..+50 = -5,0..+5,0 °C
0.1
°C
0
264
0x0108
Read-write
Display language
0= German
1= English
2= no wording
0
265
0x0109
Read-write
Individual passwords setting
001-999
，
default=987, 000 = no password
111
268
0x010C
Read-write
Power failure
0=keep off after power-on-reset
1=return to last stFate after power failure
2=switch on after power-on-reset
1
269
0x010D
Read-write
Key-lock
0x00=unlocked
0x01=lock on/off
0x02=lock mode
0x04=lock clock
0x08=lock fan speed
0x10=lock temp setting
0x1F=lock all keystrokes
Once a locked key is pressed the LOCK symbol shall be
displayed and blink twice.
0
270
0x010E
Read-write
Display Settings
0b00000001= show Setpoint (if no setpoint is shown the
setpoint keys are locked = 0x010D = 0x10=lock temp setting)
0b00000010= show Room temperature
0b00000100 = show valve symbol
0b00001000 = show PI-Loop percentage
0bxxx10000 = show Room temperature from Register 0x205
(if only room temp or setpoint is shown, then in big numbers)
15
Set point settings
Address
Access
Description
Resolution / Unit
Default
271
0x010F
Read-write
Default Setpoint after Power On Reset
0..500 = 0…50,0 °C
0.1
°C/°F
210
272
0x0110
Read-write
Setpoint temperature lower limit
0..500 = 0..50,0 °C
0.1
°C/°F
160/
273
0x0111
Read-write
Setpoint temperature upper limit
0..500 = 0..50,0 °C
0.1
°C/°F
300
274
0x0112
Read-write
Setpoint increment/decrement value
1..100 = 0,1…10,0 °C
0.1
°C/°F
5
275
0x0113
Read-write
ECO mode temperature setpoint cooling
250..450 = +25,0..+45,0 °C
0.1
°C/°F
300
276
0x0114
Read-write
ECO mode temperature setpoint heating
120..240 = +12,0..+24,0 °C
0.1
°C/°F
190

TControl Easy DX-Air Curtain (Item No. 189421)
Room thermostat for DX air curtain
SYSTEMAIR GmbH Germany [e-mail] oder http://www.systemair.de
Issue date: 03.11.2020 Page 9 / 11
PI controller
Address
Access
Description
Resolution / Unit
Default
277
0x0115
Read-only
Controller mode Comfort :
0b0000 0000=controller off (Frost protection active)
0b0000 0001=controller auto mode (heating&cooling)
0b0000 0010=controller heating mode only
0b0000 0011=controller cooling mode only
0b0000 0100=ventilating (PI loop controls fan stages only,
valves closed)
1
Controller mode ECO:
0b0001 0000=controller off (Frost protection active)
0b0001 0001=controller auto mode (heating&cooling)
0b0001 0010=controller heating mode only
0b0001 0011=controller cooling mode only
0b0001 0100=ventilating (PI loop controls fan stages only,
valves closed)
HMI mode
0b1xxx xxxx = HMI Mode, controller OFF
0b1xxx xx01 = show symbol "ventilating"
0b1xxx xx10 = show symbol "heating"
0b1xxx xx11 = show symbol "cooling"
0b1xxx x1xx = show symbol "auto mode"
0b1xxx 1xxx = reserved
283
0x011B
Read-write
Deadband
1...100 = 0,1…10,0 °C/°F
0.1
°C/°F
10
284
0x011C
Read-write
Heating Proportional Band Xp_heat
1...100 = 0,1…10,0 °C/°F
0.1
°C/°F
20
285
0x011D
Read-write
Heating Integration Time Tn_heat
0...255 = 0…255 Minutes
1.0
min
30
286
0x011E
Read-write
Cooling Proportional Band Xp_cool
1…100 -> 0,1…10,0°C/°F
0.1
°C/°F
20
287
0x011F
Read-write
Cooling Integration Time Tn_cool
0…255 = 0…255 Minutes
1.0
min
30
288
0x0120
Read-write
Minimal limit of the control variable heat
0..100
1.0
%
0
289
0x0121
Read-write
Maximal limit of the control variable heat
0..100
1.0
%
100
290
0x0122
Read-write
Minimal limit of the control variable cool
0..100
1.0
%
0
291
0x0123
Read-write
Maximal limit of the control variable cool
0..100
1.0
%
100
292
0x0124
Read-write
Fan stage 0->1 Threshold
0..100% (0..10 V)
5
293
0x0125
Read-write
Fan stage 1->2 Threshold
0..100% (0..10 V)
35
294
0x0126
Read-write
Fan stage 2->3 Threshold
0..100% (0..10 V)
52
295
0x0127
Read-write
Fan stage max. voltage value (V)
75
296
0x0128
Read-write
Fan stage defrost mode
0..100 = 0..10 V
0.1
%
17
298
0x012A
Read-write
Frost protection temperature threshold
50..150 = +5,0..+15,0 °C
0.1
°C/°F
70
304
0x0130
Read-write
Valve type selection
4= proportional (0V = 0% ..10V = 100%)
5=invers proportional (0V = 100% ..10V = 0%)
4

TControl Easy DX-Air Curtain (Item No. 189421)
Room thermostat for DX air curtain
SYSTEMAIR GmbH Germany [e-mail] oder http://www.systemair.de
Issue date: 03.11.2020 Page 10 / 11
Inputs
Address
Access
Description
Resolution / Unit
Default
336
0x0150
Read-write
Configuration external input 1
0 = No function
1 = Occupancy sensor (Open = Occupied)
2 = Occupancy sensor (Closed =Occupied)
0
337
0x0151
Read-write
Configuration external input 2
0 = No function
1 = Defrost mode (Open = active)
2 = Defrost mode (Closed =active)
2
339
0x0153
Read-write
Occupancy (OCC Input) - OFF delay
0…65535 -> 0…65535 seconds
1.0
s
1800
340
0x0154
Read-write
OCC input - OFF delay
0…65535 -> 0…65535 seconds
1.0
s
0
Holding Register (operation to override FC from Modbus)
Address
Access
Description
Resolution / Unit
Default
512
0x0200
Read-write
Active fan speed setting
0b00000000 = OFF
0b00000001 = Stage Low
0b00000010 = Stage Medium
0b00000100 = Stage High
0b00001000 = Auto OFF
0b00001001 = Auto Low
0b00001010 = Auto Medium
0b00001100 = Auto High
0
513
0x0201
Read-write
setpoint temperature
0..500 = 0..+50,0 °C
0.1
°C
0
514
0x0202
Read-write
Controller mode Comfort :
0b0000 0000=controller off (Frost protection active)
0b0000 0001=controller auto mode (heating&cooling)
0b0000 0010=controller heating mode only
0b0000 0011=controller cooling mode only
0b0000 0100=ventilating (PI loop controls fan stages only,
valves closed)
0
Controller mode ECO:
0b0001 0000=controller off (Frost protection active)
0b0001 0001=controller auto mode (heating&cooling)
0b0001 0010=controller heating mode only
0b0001 0011=controller cooling mode only
0b0001 0100=ventilating (PI loop controls fan stages only,
valves closed)
HMI mode
0b1xxx xxxx = HMI Mode, controller OFF
0b1xxx xx01 = show symbol "ventilating"
0b1xxx xx10 = show symbol "heating"
0b1xxx xx11 = show symbol "cooling"
0b1xxx x1xx = show symbol "auto mode"
0b1xxx 1xxx = reserved
515
0x0203
Read-write
Active Symbols
0x00= show none
0x01= show Leaf
0x02= show dew point
0x04= show frost protect ON
0x08= show open window
0x10= show Attention!
0x20= show hourglass
0x40= show lock
0x80= show ECO
0
516
0x0204
Read-write
Control Variable Y% (HMI Mode)
0-100%
If output is 2-point, output will be ON for control variable
>5%
0.1
%
0
517
0x0205
Read-write
Room temperature on LCD (HMI Mode)
0..500 = 0..+50,0 °C
0.1
°C
0

TControl Easy DX-Air Curtain (Item No. 189421)
Room thermostat for DX air curtain
SYSTEMAIR GmbH Germany [e-mail] oder http://www.systemair.de
Issue date: 03.11.2020 Page 11 / 11
»MOUNTING ADVICE/ DIMENSIONS (MM)
For installing or maintenance, please make sure the power is disconnected. Fix the thermostat base plate to the wall through the four screw holes
with distance between axes of 60 mm. Fasten base plate and front cover. Do not press the panel in order to protect LCD.