1. Introduction
The Meross MTS215B Smart Thermostat is designed to provide intelligent control over your boiler and water underfloor heating systems. Featuring Matter technology, it seamlessly integrates with Apple Home, Siri, Amazon Alexa, Google Assistant, and SmartThings, offering convenient remote and voice control. Its minimalist design with a sleek glass panel allows for easy temperature adjustments with a simple touch. This manual provides detailed instructions for installation, operation, maintenance, and troubleshooting to ensure optimal performance and energy efficiency.
2. Product Overview
The Meross MTS215B is a smart thermostat that combines advanced features with user-friendly design. It is specifically engineered for water-based heating systems, including boilers and water underfloor heating.
Key Features:
- Matter Technology: Ensures broad compatibility with major smart home ecosystems.
- Dual Sensor System: Includes an integrated sensor for ambient air temperature and an external sensor for floor overheating protection (optional).
- Easy Touch Control: Sleek glass panel with intuitive touch interface for manual adjustments.
- Remote & Voice Control: Manage your heating from anywhere using the Meross app or voice commands via Alexa, Google Assistant, or Siri.
- Smart Scheduling: Create custom 24/7 graphic schedules to optimize heating and save energy.
- Heating Usage Tracking: Monitor your heating system's status, temperature curve, and cumulative heating duration via the Meross app to estimate costs.
- Open Window Detection: Automatically pauses heating when an open window is detected to prevent energy waste.
- DIY Installation: Designed for straightforward installation, typically under 30 minutes.
3. Specifications
| Attribute | Value |
|---|---|
| Brand Name | meross |
| Model Number | MTS215B |
| Power Source | AC (100-250V~, 50/60Hz) |
| Output | 3A Max. |
| Set Point Range | 5~35℃ |
| Accuracy | ±0.5 ℃ |
| Power Consumption | <1 Watt |
| Dimensions | 86 x 86 x 48 mm |
| Communication Method | Wi-Fi |
| Battery Included | No |
| Heating System Compatibility | Boiler, Water Underfloor Heating Systems |
4. Setup
4.1 Compatibility Check
The Meross MTS215B is designed for water heating systems, including most boilers and water underfloor heating systems. It is NOT compatible with electric heating systems. Before installation, ensure your heating system is compatible. The thermostat requires Live and Neutral wires (230VAC) for power.
4.2 Installation (Embedded Wall)
The thermostat is designed for embedded wall installation. It requires a minimum of 4 wires for boiler systems and 3 wires for underfloor heating systems. The Live wire is typically brown, and the Neutral wire is blue.
- Power Off: Before beginning any electrical work, ensure the main power supply to your heating system is turned off at the circuit breaker.
- Prepare Wall Box: Ensure you have a standard wall box with sufficient depth (typically >32mm) and width/height (>50.5mm) to accommodate the thermostat.
- Wiring: Connect the Live and Neutral wires from your power supply to the corresponding terminals on the thermostat. For boiler systems, connect the additional control wires as per your boiler's instructions. For underfloor heating, connect the heating element wires. Refer to the wiring diagram below.
- Mounting: Secure the thermostat into the wall box.
- Power On: Restore power to your heating system at the circuit breaker.
4.3 App Setup
After physical installation, set up the thermostat using the Meross app.
- Download Meross App: Download the Meross app from the App Store or Google Play.
- Create Account: Register for a Meross account or log in if you already have one.
- Add Device: Follow the step-by-step setup wizard in the Meross app to add your MTS215B thermostat. This typically involves putting the thermostat into pairing mode and connecting it to your Wi-Fi network.
- Integrate with Smart Home Platforms: Once connected to the Meross app, you can link it with Apple Home, Amazon Alexa, Google Assistant, or SmartThings using the Matter integration process outlined in the Meross app.
5. Operating Instructions
5.1 Manual Control
The thermostat features a sleek glass panel with touch controls for direct temperature adjustment. Simply touch the screen to wake it up and use the up/down arrows to set your desired temperature.
5.2 Meross App Control
The Meross app provides comprehensive control and monitoring capabilities:
- Remote Control: Adjust temperature, change modes (e.g., Manual, On, Schedule), and turn the thermostat on/off from anywhere.
- Smart Scheduling: Create and manage 24/7 graphic schedules to automate your heating based on your daily routine.
- Heating Usage Tracking: View historical data on heating system status, temperature curves, and cumulative heating duration. Input your heating tariff to estimate heating costs and identify opportunities for energy savings.
5.3 Voice Control
Integrate your Meross MTS215B with your preferred voice assistant for hands-free control.
- Amazon Alexa: "Alexa, set the thermostat to 72 degrees."
- Google Assistant: "Hey Google, set the temperature to 72 degrees."
- Apple Home/Siri: "Hey Siri, set the living room thermostat to 22 degrees Celsius."
5.4 Open Window Detection
The thermostat is equipped with an open window detection feature. If a significant drop in temperature is detected, indicating an open window, the thermostat will automatically pause heating to conserve energy. Heating will resume once the window is closed or after a set period.
6. Maintenance
- Cleaning: Gently wipe the thermostat's glass panel with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the surface.
- Firmware Updates: Ensure your thermostat's firmware is kept up-to-date through the Meross app to benefit from the latest features and security enhancements.
- No Battery Replacement: The thermostat is AC-powered and does not require battery replacement.
7. Troubleshooting
- Thermostat Not Powering On:
- Check the main power supply at the circuit breaker.
- Ensure Live and Neutral wires are correctly connected and secure. - No Wi-Fi Connection:
- Verify your Wi-Fi network is active and within range.
- Ensure the thermostat is in pairing mode during setup.
- Try restarting your Wi-Fi router and the thermostat. - Heating Not Responding:
- Check the thermostat's mode (e.g., ensure it's not in 'Off' or 'Manual' mode if expecting a schedule).
- Verify wiring connections to the boiler/heating system.
- Ensure the set temperature is above the current room temperature. - Voice Control Not Working:
- Confirm the thermostat is correctly linked to your smart home platform (Alexa, Google Home, Apple Home).
- Check your internet connection.
- Ensure you are using the correct voice commands. - Inaccurate Temperature Readings:
- Ensure the integrated sensor is not obstructed.
- If using an external sensor, ensure it is properly installed and connected.
8. User Tips
- Optimize Schedules: Take advantage of the 24/7 graphic scheduling feature to pre-heat your home before you arrive and reduce heating when you're away or asleep. This can significantly reduce energy consumption.
- Monitor Usage: Regularly check the heating usage tracking in the Meross app. Understanding your consumption patterns can help you make informed decisions to save on heating bills.
- Matter Integration: For the best smart home experience, ensure your Matter controller (e.g., Apple HomePod Mini, Amazon Echo, Google Nest Hub) is up-to-date and within range of the thermostat.
- External Sensor Placement: If using the external floor sensor, ensure it is placed in a location that accurately reflects the floor temperature and is not exposed to direct sunlight or drafts.
9. Warranty and Support
Meross products come with a standard manufacturer's warranty. For detailed warranty information, technical support, or service inquiries, please refer to the official Meross website or contact Meross customer support directly. Keep your purchase receipt as proof of purchase.
