Installation
and operation

manual. Print version

терморегулятор terneo sxтерморегулятор terneo sx
In the box: thermostat with air temperature sensor, floor temperature sensor with connected wire, screws, installation and operation manual

Content

Content

Purpose
Technical data
Installation
Electrical connection diagram
WI-FI connection
Exploitation
Thermostat settings menu
Exploitation
Thermostat settings menu

Purpose

Purpose

‍Wi-Fi thermostats terneo nx is designed to maintain a comfortable temperature in rooms heated with an electric cable.

‍Set your own schedule by selecting comfort and energy-saving periods. In the morning and evening, terneo maintains the preferred temperature, while lowering it during the day and night to save electricity. This ensures your home remains comfortable and reduces your energy bills. Moreover, it has manual and automatic functions, programmable functions, and state memory functions. Download Tuya Smart App

Technical data

Technical data

Temperature setting range
15...95 °C
Floor temperature limit range
25...95 °C
Temperature sensor
NTC 10 kOhm
Temperature hysteresis
0,5...10 °C
Working environment
–5...50 °C
Self-consumption power
<1 W
Load current
16 A
Input voltage
230 V ~ 50/60 Hz
Wi-Fi
IEEE 802.11b/g/n 20: 2412-2472MHz/ 13 channel
Antenna Gain
Wi-Fi (2.4G) 2.54dBi
Type of Modulation
DSSS, OFDM, CCK
Max. RF output power
16.05dBm
Plastic
PC+ABS
Overall dimensions (w x h x d)
103 х 96 х 66 mm
Weight in the complete set
0,23 kg ±10 %

Installation

Installation

‍Read this document carefully before installing and using the thermostat. This will help to avoid possible hazards, errors, and misunderstandings.

‍The ambient temperature during installation should be within –5...+45 °C. When installing in a bathroom, toilet, kitchen, or pool, place the thermostat in a location not exposed to accidental splashes. Minimize the risk of moisture and liquids entering the installation area.

☝️Recommendations for connecting loads more then 10 A. The terneo thermostat may not handle a current of 16 A and could overheat in the presence of unfavorable factors such as poor heat dissipation from the socket, high ambient temperature, or poor installation quality. We guarantee stable operation of the thermostat with a current up to 10 A. If the current exceeds 10 A, we recommend connecting the heating cable through a contactor (magnetic starter) rated for the required current. To protect against short circuits, install an automatic circuit breaker (CB) with a rating of up to 16 A in the phase wire break before the thermostat.

‍The terminals of the thermostat are designed for wires with a cross-section of no more than 2.5 mm². It is recommended to use soft copper wire, which can be tightened in the terminals using a screw-driver with a blade width not exceeding 3 mm and a torque of 0.5 N·m. The use of aluminum is not desirable. A screwdriver with a blade width greater than 3 mm may cause mechanical damage to the terminals, which can result in the loss of warranty service rights.

‍For installation you need:
— Make a hole in the wall with a diameter of 60 mm and 45 mm deep for the mounting box and channels for power supply and sensor wires.
— Bring the heating system power and sensor wires to the mounting box.

1. Connect the thermostat according to the connection diagram
2. Disconnect the control panel from the baseby pressing the two bottom clips with a screwdriver
3. Secure the thermostat in the mounting box using screws
4. Аttach the upper part of the panel to the base and secure until it clicks into place

Electrical connection diagram

Electrical connection diagram

‍The supply voltage (AC 100–240 V, 50 Hz) is connected to terminals 1 (L) та 2 (N). The line (L) is connected to terminals 1, the neutral (N) — to terminals 2.

‍Load (max 16А) is connected to terminals 3 (N, neutral) and 4 (L, line). The temperature sensor (NTC) is connected to terminals 6 and 7. Wire colors do not matter during connection.

WI-FI connection

WI-FI connection

Before using the thermostat for the first time, you need to set up Wi-Fi and connect via a smartphone or tablet to ensure communication between the devices.

When the thermostat is turned on, press and hold Опис картинки for 5 sec, the WI-FI icon flashes on the thermostat display — the thermostat will enter the settings mode.

To operate the thermostat, make sure to turn on Bluetooth on your smartphone.

Follow 3 steps to connect the thermostat to Wi-Fi:
Follow 3 steps to connect the thermostat to Wi-Fi:

1. Download Tuya Smart App. Open the App Store or Google Play on your smartphone.

2. Register an account, if you do not already have Tuya account. You can choose to register or log in via SMS verification code.
— Tap "Create New Account" to enter the privacy policy page of Tuya Smart Platform.
— After that, enter your phone number.

The system automatically determines the current country/region, or you can manually select the country/region, enter your phone number or email address, and tap "Get the Verification Code". Enter the received verification code. Then enter the password. Tap "Finish" to register successfully.

3. Add the device to the Tuya app. Make sure that Bluetooth is turned on on your smartphone and that the thermostat is in pairing mode. If the app has automatically paired with the device, it will immediately offer pairing, as shown in Figure 1. If not, tap "Add Device" or "+" in the upper right corner of the main page of the app (Figure 2). Select the device type and follow the prompts (Figure 3).

After the app connects to the device and displays it on the screen (Figure 4), go to the device pairing menu by tapping on it and choose the Wi-Fi network (Figure 5). Add the device to your account by tapping "Done" (Figure 6). If desired, change the name, location, or add a widget to the home screen by tapping the edit icon (Figure 7).

If the Wi-Fi connection fails, the app will display a page where you can Retry or view the FAQs. Before retrying the connection, first make sure that your thermostat is in pairing mode.

Exploitation

Exploitation

‍1. Power On/Off: Press Опис картинки.
2. Press Опис картинки to switch between modes.
3. Locking: simultaneously press and hold Опис картинки and Опис картинки for 5 sec to add or cancel the child lock.
4. Connecting to Wi-Fi: When the thermostat is powered on, press and hold Опис картинки for 5 sec — the Wi-Fi icon on the thermostat display will start flashing, indicating that the device is connected to the network.

Thermostat settings menu

Menu button "≡"

‍To enter the settings mode on a powered-off device, press and hold Опис картинки and Опис картинки or 5 sec. To move to the next parameter, press Опис картинки, then use Опис картинки and Опис картинки to adjust it. Press Опис картинки to exit the settings mode.

‍Temperature calibration
The default value of the calibration room temperature is –2 °C. Press Опис картинки or Опис картинки to adjust the range from 9.9 °C to –9.9 °C. This setting allows you to adjust the thermostat readings if they differ from the temperature measured by your accurate reference thermometer.

‍Sensor selection
The temperature sensor selection defaults to IN — Internal Sensor. Press Опис картинки or Опис картинки to adjust it respectively as IN — Internal Sensor selection; OUT — External Sensor selection; ALL — Both Sensors selection.

‍External Sensor temperature limit
The limit temperature value is 95 °C by default. Press Опис картинки or Опис картинки to adjust the range from 25 °C to 95 °C.

‍Temperature control switch difference (1 °C by default)
After the set temperature is reached, the thermostat turns off the heating. When the temperature drops by the hysteresis value, it turns the heating back on. Press Опис картинки or Опис картинки to adjust the range from 0.5 °C to 10 °C.

‍Frost protection ("OFF" by default)
OFF — Function disabled. ON — Function enabled. To turn on, select ON. If the temperature drops below +5 °C, the heating will turn on and maintain a temperature of +7 °C.

‍Week programming settings
5 — 5 working days + 2 days off;
6 — 6 working days + 1 day off;
7 — 7 working days; OFF — turn off programming.

‍Output main inverse ("OFF" by default)
Press Опис картинки or Опис картинки to change the logic: 00 — disabled (heating mode is active); 01 — cooling mode enabled. The relay will close when the temperature is above the setpoint.

‍Backlight brightness
00: Close • 01: Low • 02: Middle • 03: High

‍Max setting temperature
Set the upper limit of the temperature to 60 °C; press Опис картинки or Опис картинки to adjust the range from 15 °C to 95 °C.

‍Sound
ON: Turn on the sound • OFF: Turn off the sound

‍Window opening detection ("ON" by default)
ON — The room temperature drops by 6 °C within 4 min and stop heating.
OFF — Room temperature rises by 3 °C / after 48 min / manual (three methods). After the window opening mode is enabled, any one of these three conditions can trigger the exit of the window opening mode.

‍Power outage memory function
0: Memory function • 1: Turn on after turning on the power • 2: Turn off after turning on the power

‍Reset (the default display is "–")
To reset the device to factory settings: Press and hold Опис картинки until "---" appears on the screen. Then press and hold Опис картинки to confirm the reset.

Additional information

Additional information

Safety instructions
Warranty terms
Technical support chat
If you haven't found the answer, please contact our technical support engineer: Instagram or Telegram
Version of instruction 9.25

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