Smallart THR-FCU-2025 User manual

THR-FCU-2025
ROOM CONTROL PANEL
Doc: 00-15-01, V1.3, 20161113 Page 1 / 4
Copyright © Smallart®
www.smallart.com.tr
THR-FCU-2025 User Manual
THR-FCU-2025 is designed to control the room temperature in industrial,
commercial and residential environment with stand-alone microprocessor and large
LCD display.
It shows the following Items: working status (Cooling , Heating , Ventilation
, Auto ), valve output status ( ), room temperature, set temperature, time and
etc. With key: On/Off ( ), Menu（ ）, Fan speed（ ）,Okey（）, Adjustment
（▲▼）.
Basic Features States Display
Manual/Auto control valves output
Manual 3-step fan speed changeover
Low temperature protection
Clock
Detect and display room temp.
Working mode
Fan speed
Display sensor detect temperature
Display setting temperature
Clock display
Display valve output
Specifications
Temperature sensor: NTC
Control Accuracy: ±1℃
Operation environment:0～45℃
Humidity: 5～95% RH（non-condensing）
Button: push button
Power Consumption: ＜2 W
Protection Class: IP 30
Power supply: AC 24V, 50/60Hz or DC 24V
Wiring: Accepting：Accepting 2×1.5 mm2
Or 1×2.5 mm2wires
Switch current rating: Resistive: 2 A, Inductive: 1 A
Housing: PC + ABS Flame Retardant
Frame size: 112×85×28.5 mm（L×H×W）
Hole pitch: 60 mm /83.5mm (Standard)
Operation
ON/OFF: Press” ”for on/off and ECO mode
Temperature setting: press “▼”and “▲”to adjust temperature by 0.5℃.
Mode selecting: press “ ”to select cooling “ ”, heating “ ”, ventilation “ ”or auto “ ”; Auto mode
is available only under 4-pipe system.
Fan speed: press “ ” to set （Low）, （Med）, （High）, （Auto）;
The fan speed change automatically under Auto mode. Auto LOW when the difference between room-
temperature and set-point exceed 1℃; Auto MED when exceed 2℃; Auto HIGH when exceed 3℃.
Clocksetting: Press “” into clock program function by hour, minutes and week, Press “▼”and “▲”to adjust.
ECO mode: press “ ” to enter into ECO mode, thermostat will be under ECO heating/cooling setting
temperature with low fan speed. Press “ ” again for exit ECO mode
US (7 Days 4 Periods) programmable function: One week is divided into 7days with four periods in each
day, each temperature can be set separately to meet the user’s different request in different time periods.

THR-FCU-2025
ROOM CONTROL PANEL
Doc: 00-15-01, V1.3, 20161113 Page 2 / 4
Copyright © Smallart®
www.smallart.com.tr
Press “” for 3 seconds, to enter 7days 4 periods programmable setting mode, Press “” again to select the
clock and temperature of 7days 4 periods programmable, by pressing “▼”and “▲”to adjust the parameters.
Factory defaults as below chart: (7Days 4 Periods programmable function is closed per factory default.)
Time period
6:00-8:00
8:00-16:00
16:00-22:00
22:00-6:00
Heating mode
20℃
16℃
20℃
16℃
Cooling mode
26℃
29℃
26℃
28℃
EU (Time switch machine) programmable function (Factory default): One day is divided into 4 periods, set its
working status separately in different time period in order to achieve energy saving.
Press “” to enter timer setting interface, and press “” again to set timer, factory default as below chart by
pressing “▼”and “▲”to adjust the parameters.
Time period
8:00
12:00
13:00
18:00
status
Timer on
Timer off
Timer on
Timer off
Parameter Setting
Power on, press “M”5 seconds, “clock”display “01”, temperature display setting point. Press “M”again to
check the parameter, press “▼”and “▲”to change the value. The parameter definition as follows:
Parameter name
Parameter No
Factory default
Selection
2-pipe/4-pipe select
1
04
02: 2-pipe; 04: 4-pipe
DA/DB selected
2
db
dA: DA model; db: DB model
Memory function
3
02
00: no memory when power off;
01: power on;
02: memory;
NO/NC valve select
4
03
00: Val1,Val2 NO valve;
01: Val1 NC valve, Val2 NO valve;
02: Val1 NO valve, Val2 NC valve;
03: Val1, Val2 NC valve;
Manual/Auto
mode select
5
00
00: manual change;
01: auto mode (key invalid)
Return difference
(Deadband)
6
1
Just under auto mode.
Adjustment range 1℃~5℃
Auto mode heat-cool
changeover delay
7
120
00~999 seconds. Only in auto mode
fan running/closed
under heating mode
8
00
00: fan running;
01: fan closed
Min temperature
limit(heating)
9
15
05~20℃
Max temperature
limit(heating)
10
30
15~35℃
Min temperature
limit(cooling)
11
16
10~25℃
Max temperature
limit(cooling)
12
32
20~35℃
Economy mode
setpoint (Cooling)
13
28
20~35℃

THR-FCU-2025
ROOM CONTROL PANEL
Doc: 00-15-01, V1.3, 20161113 Page 3 / 4
Copyright © Smallart®
www.smallart.com.tr
Economy mode
setpoint (Heating)
14
18
10~25℃
Sensor Reading
Calibration
15
0
-6~6℃
Key lock
16
00
00: unlock;
01: lock
Fan off delay
17
00
00~999 seconds, heating mode, the valve will be closed
when the temperature reach the setting point, fan keep
running.
Unfreezing
temperature setting
18
5
1~15℃, the controller open when temperature lower
than the value, heating valve output
Program mode
19
02
00: None;
01: US mode:
02: EU mode
Low temperature
protection
20
00
00：closed
01：using
Thermostat
communication address
21
01
1~250
Diagram
24V 0V
L
N
DO2
DO1
A
B
UI1
UI2
UI3
AO1
AO2
DO3
AC 220V
50/60Hz
L N
GO
G
DOX
Fan
N

THR-FCU-2025
ROOM CONTROL PANEL
Doc: 00-15-01, V1.3, 20161113 Page 4 / 4
Copyright © Smallart®
www.smallart.com.tr
Mounting
1.Seperate the thermostat
2.Lever the portable terminals block
3.Wiring connected to the terminal block
4.Install the terminal block
5.Fix the back plate to the wall
6. Press the face panel to the back panel
Note: Be sure to connect all the wires as per the wiring diagrams and keep it away from water, mud
and other material so as to prevent the unit being spoiled!