Installation
and operation

manual

терморегулятор terneo sx
In the box: thermostat, frame, temperature sensor with connected wire, installation and operation manual, the packing box

Content

Content

Purpose
Technical data
Installation
Electrical connection diagram
Binding to the app
Exploitation
Exploitation
Possible problems and ways to overcome them

Purpose

Purpose

‍Smart Wi-Fi thermostat terneo sx ‍is used to maintain 
a comfortable temperature in a room that is heated via an electrical cable, infrared film or water pipes.

‍Smart functions can save up to 50% by maintaining a comfortable underfloor heating temperature only when you need it. Download terneo app or create an account on the my.terneo.ua

read more

‍In the absence of voltage, all thermostat settings and heating schedule are stored in the thermostat's non-volatile memory, and the clock will continue to operate from the internal power supply for three days.

The water floor heating is controlled by a thermo-electric servo with an operating voltage of 230 V. 
The servo can be normally closed or normally open. When connecting a normally open actuator to the terneo, activate the Normally Closed (NC) function 
in the Mobile App terneo.

Heating based on electric convectors, infrared panels and other electric heaters is controlled by placing a temperature sensor in the air.

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Technical data

Technical data

Maximum load current (for category AC-1)
16 А
Adjustment range
5...45 °С
Temperature hysteresis by floor
0,5...10 °С, step 0,1 °С
Measured temperature range
–28...+75 °С
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Maximum power load (for category AC-1)
3 000 VА
Input voltage
230 V ±10 %
Weight in the complete set
0,18 kg ±10 %
Temperature sensor (in set)
NTC thermo-resistor10 kOhm at 25 ° C (R10)
Length of the sensor connected cable
3 m
Maximum extension length of the temperature sensor
20 m
Supported sensor types:
analog:
NTC 4.7, 6.8, 10, 12, 15, 33, 47 kOhm at 25 °C
digital:
D18
Number combinations under heat, at least
50 000 cycles
Number of combinations 
without heating, no less than
20 000 000 cycles
Wireless networking standard
802,11 b/g/n
One of the ports is used
tcp 9000, 9010, 9020, 9030
Minimum speed of Internet connection
128 kb/s
Operating frequency range
2400-2483,5 MHz
Minimal Internet traffic
30 MB/ms
Overall dimensions (w·h·d)
75 х 75 х 35 mm
Inner overall dimensions
of decorative frame
45 х 45 mm
Cross section of connection wires
not more than 2,5 mm2
Compatibility with frames  from other manufacturers
Schneider Electric Unica та Unica New
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Electrical connection diagram

Electrical connection diagram

‍The analog sensor (R10) is connected to terminals 1 and 2. The colors of the wires are not important.

‍The digital sensor (D18) is connected with a blue wire to terminal 2 and a white wire to terminal 1. If the thermostat enters the Timed Emergency Mode, try connecting the blue wire to terminal 1 and the white wire to terminal 2. If the thermostat does not detect the sensor after both attempts, contact the Service Center.

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‍The supply voltage (230 V ±10%, 50 Hz) is applied to terminals 4 and 5, the phase (L) is determined by the indicator and connected to terminal 5, and the neutral (N) is connected to terminal 4.

‍Connect the load (connecting wires from the heating element) to terminals 3 and 6.

‍Important! Install and check the load before installing and connecting the thermostat.

Scheme 1
Diagram 1. 
Connection of the circuit breaker and SSD
Scheme 2
Diagram 2. 
Wiring and simplified internal circuit.
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Binding to the app

Binding to the app

— Please note! The thermostat does not work with 5G Wi-Fi networks. During operation, the router always creates two networks: 2.4G and 5G. When binding, be sure to select 2.4G.
— It is not recommended to connect the thermostat to a Wi-Fi network that uses Multi WAN technology.

Status of the indicator
on the thermostat
How to connect the terneo to the iOS, Android or desktop application my.terneo.ua
Text version for iOS
Text version for Android
Text version for my.terneo.ua
How the server works in the presence of the Internet

‍The thermostat is constantly synchronized with the server, executing its commands, receiving the latest settings, and sending telemetry about its status. If you disable remote control of the thermostat, the server 
can only be used to accumulate statistics (details in Menu). For proper operation of statistics and heating schedule, after connecting to the server, please 
specify your time zone. Afterwards, the thermostat will automatically update the date and time via the Internet.

How the server works in the absence 
of the Internet

‍The thermostat continues to operate according to the set settings. During this time, you can control the thermostat using the thermostat's buttons or the offline mode in the terneo app. Please note that instead of a fixed internet connection, you can use mobile internet. For this, you will need a separate device (for example, a smartphone) that will act as a Wi-Fi hotspot. After restoring the Internet connection, all settings will be synchronized.

Exploitation

Exploitation

‍When connected and during operation, the thermostat displays the current temperature of the remote sensor. If it is lower than the set temperature, the load is energized. In this case, the indicator lights up red.

‍Use "+" or "–" buttons to change the heating temperature. First, the screen displays the operating mode, then the set temperature of this mode.

If you want to securely protect the settings from children or unauthorized access, press and hold the "+" and "–" simultaneously for 6 seconds until "Loc" appears on the screen, or in case of unlocking, "unLoc" will appear.

‍Please note! Whenever you want to use the buttons on the thermostat to view or change settings, first swipe from left to right "–" "≡" "+" buttons — the screen will show three dashes. This is necessary because the touch buttons automatically lock 20 seconds after the last press.

Settings using buttons

‍Use the middle "≡" to move through the menu. If there is no Wi-Fi connection, the Pin menu item will not be available. To select and change the items, use the "+" and "–". 5 seconds after the last button press, the display returns to the temperature mode.

Operating mode
Brightness
PIN-code or local IP
Wi-Fi operating mode |access point control|
Correction
Power of the connected load
Blocking remote control of the thermostat

Possible problems and ways to overcome them

Possible problems and ways to overcome them

Status of the thermostat — offline |icon with a crossed-out cloud|
The screen displays "Ert" |error temperature|
When pressing the buttons on the screen, "Lbt" |low battery| is displayed
Screen is flashing "oht" |overheat|
Screen displays "OC" |open circuit| or "SC" |short circuit|
The load is off, the screen and indicator are not lit
The thermostat does not respond to changes made in the app
Incorrect password when connecting to the Wi-Fi network created by the thermostat
Preheating does not work or works incorrectly
The heating does not turn off, and the set heating temperature remains unachieved
Connection error through Android or iOS apps, and the indicator is glowing blue
When pressing the button on the thermostat, 
the screen displays a flashing dash

Additional information

Additional information

Safety instructions
Warranty terms
Technical support chat
If you haven't found the answer, please contact our technical support engineer:
       dselectronics_bot
        terneo_official
Version of instruction F25

Any questions? We are happy to answer

+38 091 481-91-81

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