R7C Series Tuya Smart Home Wifi Thermostat

1. Introduction

The R7C Colorful Screen WIFI Intelligent Digital Thermostat is designed for controlling room temperature in floor heating systems. It compares the ambient temperature with the set temperature to manage the operation of heating equipment, enhancing comfort and promoting energy saving. This series includes models for Electric Heating, Water Heating, and Boiler systems, offering versatile solutions for various scenarios.

This device supports Wi-Fi connectivity, allowing remote control via the Tuya Smart/Smart Life APP, and integrates with voice assistants like Amazon Alexa and Google Assistant.

2. Safety Information

WARNING: Electrical Shock Hazard

• Installation and wiring must be carried out by a qualified electrician in accordance with local electrical codes.
• Always disconnect power at the circuit breaker before installing or servicing the thermostat.
• Ensure the supply voltage matches the thermostat's specifications (AC100~240V; 50/60Hz).
• Do not operate the thermostat with damaged wiring or if it has been exposed to moisture.

3. Product Overview

The R7C series thermostat features a 2.8-inch RGB colorful LCD screen for a delicate visual effect and intuitive control. It is available in various finishes to suit different aesthetics.

3.1. Display Symbols

The thermostat's screen displays various symbols to indicate its status and settings:

Image: Diagram illustrating the various display symbols on the R7C thermostat screen, including Time Display, Date Week, Outdoor Temp., Outdoor humidity, Fan Coil valve, Floor Heating valve, Child-lock Mode, Frost Protection, Wi-Fi, Room humidity, Room Temp., Working mode, Fan, Auto Mode, Manual Mode, Temporary Mode, Fan Speed (back), and Knob (Power on/off).

• Time Display / Date Week: Current time and day.
• Outdoor Temp. / Outdoor humidity: Local weather conditions (when networked).
• Fan Coil valve / Floor Heating valve: Status of respective heating/cooling components.
• Child-lock Mode: Indicates if child lock is active.
• Frost Protection: Indicates if frost protection is active.
• Wi-Fi: Wi-Fi connection status.
• Room humidity / Room Temp.: Current room humidity and temperature.
• Working mode: Current operating mode (e.g., heating, cooling, auto).
• Fan: Fan status.
• Auto Mode / Manual Mode / Temporary Mode: Current temperature control mode.
• Fan Speed (back): Fan speed setting.
• Knob (Power on/off): Used for power and navigation.
• (next) Mode: Button to cycle through modes.

3.2. Product Variants and Working Principle

The R7C series offers different models tailored for specific heating systems:

Image: Diagram showing the R7C thermostat's application in Electric Heating, Water Heating, and Boiler systems.

The thermostat works by sensing the room temperature and adjusting the heating output to maintain the desired setpoint. Different models are designed for:

• Electric Heating: For systems like heating cables, mats, or films.
• Water Heating: For water-based underfloor heating.
• Boiler: For controlling gas or water boilers.

3.3. Dimensions

The physical dimensions of the thermostat are as follows (Unit: mm):

Image: Diagram showing the side and front view dimensions of the thermostat. The side view shows a depth of 11.2mm for the visible part and 32.6mm for the embedded part. The front view shows a width and height of 51mm for the embedded box.

The device is designed for an 86*86 wall-mounted box, making installation convenient.

4. Installation and Setup

4.1. Mounting Steps

The thermostat features a pre-guide and limited snap-fit design for easy mounting:

1. Release the front cover by inserting a flat-head screwdriver into the bottom crack.
2. Insert the wires into the appropriate terminals and secure them with screws. Suggested wire-stripping length is 7-9mm.
3. Mount the backing plate into the wall cassette. Secure it with screws, then fix the thermostat. Ensure the thermostat is fixed without deformation. Suggested torque is 0.2~0.4N.m (2.0~4.1kgf.cm).
4. Re-mount the front cover via snap-fit connection.

4.2. Wiring Diagrams

Ensure correct wiring according to your specific thermostat model and heating system. The thermostat operates in full capacity below 2500m altitude. For altitudes between 2500m and 4200m, the power rating of the external load should not exceed 80% of the thermostat's rated power.

4.2.1. Electric Floor Heating (16A) - Models R7C.716, R9W716

These models are designed for electric floor heating systems (e.g., heating cables, mats, films) and include a floor sensor.

Image: Black/Gold R7C.716 Electric Floor Heating Thermostat with 16A wiring diagram. Connections: 1 (L), 2 (N), 3 (N1), 4 (L1), 5 (NTC1), 6 (NTC2), 7 (External sensor).

Image: White R9W716 Electric Floor Heating Thermostat with 16A wiring diagram. Connections: 1 (L), 2 (N), 3 (N1), 4 (L1), 5 (NTC1), 6 (NTC2), 7 (External sensor).

Wiring for Floor Heating (Model #716, #716S):

L   N   N1  L1  NTC1 NTC2
1   2   3   4   5    6    7
AC100~240V  16A Max
External sensor

4.2.2. Water Heating / Gas Boiler (3A) - Models R7C.703, R7C.723

These models are suitable for water heating systems and gas boilers. The 3A models typically do not include a floor sensor.

Image: Black R7C.703 Water/Gas Boiler Thermostat with 3A wiring diagram. Connections: 1 (L), 2 (N), 3 (COM), 4 (OPEN), 5 (CLOSE), 6 (PC1), 7 (PC2).

Image: White R7C.723 Water/Gas Boiler Thermostat with 3A wiring diagram. Connections: 1 (L), 2 (N), 3 (COM), 4 (OPEN), 5 (CLOSE), 6 (PC1), 7 (PC2).

Wiring for Water/Gas Boiler (Model #703, #703S, #723, #723S):

L   N   COM OPEN CLOSE PC1 PC2
1   2   3   4    5     6   7
AC100~240V  3A Max
Normally-closed electric actuator (for #723 only)
Dry contact signal to control boiler
Linkage control; delay time of linkage control is adjustable

4.3. Wi-Fi Setting

To connect your thermostat to Wi-Fi:

1. Press the menu button () for 3 seconds to enter the menu page.
2. Turn the knob to select "Wi-Fi setting".
3. Choose "Bluetooth Mode" (suggested for quick connection) or "Access Point Mode".
4. Press the knob to confirm. The device will enter the distribution network state.
5. Follow the instructions in the Tuya Smart/Smart Life APP to complete the connection.

Note: Ensure your mobile device's Bluetooth is enabled for Bluetooth Mode setup.

5. Operation

5.1. Basic User Operations

• Power on/off: Press the knob for 3 seconds to turn the thermostat on or off.
• Temperature Setting: Rotate the handwheel knob to change the setting temperature by 0.5°C increments.
• System Mode:
  • Press the mode button () shortly to switch between manual/auto mode (for Floor Heating).
  • Press the mode button shortly to switch between cooling/heating/ventilation (for Fan Coil).
  • Press the mode button shortly to switch between cooling/heating/ventilation/floor heating/floor heating + heating (for Integrated systems).
• Enter Menu: Press the menu button () for 3 seconds to enter the menu interface.
• Temperature Control Mode: Press the mode button shortly to switch manual/auto mode (for Integrated, Floor Heating).
• Child-lock: Press the child-lock button () for 3 seconds to activate or deactivate child-lock.

5.2. Temperature Control Modes

• Auto Mode: Weekly-programmed mode allowing up to 6 heating events per day. Heating events, workdays, and temperatures can be customized separately based on personal routines.
• Manual Mode: The thermostat operates based on a manually-set temperature, disconnecting from the auto mode.
• Temporary Mode: The thermostat operates based on a manually-set temperature temporarily and then shifts back to auto mode at the next scheduled event.

5.3. Weekly Programming (Auto Mode)

To set up weekly programming for Floor Heating/Integrated systems:

1. Under power-on status, long press the menu button () to enter the menu page.
2. Choose "Auto Mode", then select "Weekly Programming".
3. Set the period parameters (time and temperature for each event).
4. Press the menu button () to save and exit.

Example schedule for Auto Mode:

Table: Default weekly programming schedule for Floor Heating/Integrated systems.

5.4. Smart Features

• APP Remote Control: Control your thermostat from anywhere using the free Smart Life or TuyaSmart app. Simply enable Bluetooth for quick connection.
• Voice Control: Compatible with Amazon Alexa and Google Assistant for hands-free temperature adjustments.
• Weather and Humidity Display: When connected to Wi-Fi, the thermostat can display local outdoor temperature and humidity, as well as room humidity. This helps maintain a healthy indoor environment.
• Memory Function: All settings are saved in case of power failure.
• Multi-language Support: The thermostat can display English, Italian, and Russian.

Image: The handwheel knob allows for precise temperature setting in 0.5°C increments.

Image: Illustration of APP remote control functionality, showing a smartphone interface controlling the thermostat.

Image: Scene depicting voice control of the thermostat using Amazon Alexa or Google Assistant.

Image: Thermostat displaying weather forecast information, including temperature and humidity.

Image: Thermostat displaying outdoor temperature, outdoor humidity, and room humidity.

6. Maintenance

To ensure optimal performance and longevity of your thermostat:

• Clean the screen and exterior regularly with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
• Ensure the thermostat is free from dust and debris, especially around ventilation openings.
• Do not attempt to open or repair the device yourself. Refer to qualified personnel for any servicing needs.

7. Troubleshooting

7.1. Sensor Failure

If the thermostat displays an E0 or E1 error, it indicates a sensor issue and will remain powered off until the error is resolved. Ensure the correct work mode for sensors is selected.

• E0 Error: Built-in sensor is short-circuited or disconnected.
• E1 Error: Floor sensor is short-circuited or disconnected.

Check sensor connections and wiring for any damage or disconnections. If the issue persists, contact support.

7.2. Common Issues

• Thermostat not turning on: Check power supply and wiring connections. Ensure the circuit breaker is on.
• Wi-Fi connection issues: Ensure your router is working, the Wi-Fi password is correct, and the thermostat is within range. Try re-doing the Wi-Fi setup process.
• Temperature not changing: Verify the thermostat is in the correct operating mode (e.g., heating, auto). Check if the set temperature is appropriate. Ensure the heating system itself is functional.
• Inaccurate temperature readings: Ensure the thermostat is not exposed to direct sunlight, drafts, or other heat sources that could affect its sensor.

8. Specifications

Table: Technical specifications for the R7C series thermostat.

9. User Tips

• Sensor Type: Be aware that 16A models (e.g., R7C.716) for electric floor heating typically include a floor sensor, while 3A models (e.g., R7C.703/R7C.723) for water heating/gas boilers usually do not. Confirm your model's sensor configuration before installation.
• Color Options: The R7C thermostat is available in several color combinations, including Black&Gold, White, Black, and White&Silver. Choose the one that best fits your decor.
• Language Support: The thermostat supports multiple display languages, including English, Italian, and Russian, making it accessible to a wider range of users.

10. Warranty and Support

The product comes with a 2-year warranty. For any issues or technical support, please refer to the seller or manufacturer.

Image: Warranty information indicating a 2-year warranty period.

A detailed user manual in PDF format is also available for download. Please refer to the official product page or contact customer support for the link to the PDF document (e.g., https://manuals.plus/m/16c48df56f0f6d335866933ec87516a3643f263014e29f3d94836280b0adee2c).