AVATTO ZWT198
Contents
AVATTO Smart Thermostat User Manual
Model: ZWT198 | Brand: AVATTO
1. Introduction
The AVATTO ZWT198 is a smart Zigbee thermostat designed for controlling water and gas boilers. It offers precise temperature control, multiple operating modes, weekly programming, and smart home integration through the Smart Life/Tuya app, including voice control via Alexa and Google Home. This manual provides detailed instructions for installation, operation, and maintenance of your thermostat.
2. Safety Information
- Always disconnect power before installation or maintenance.
- Installation should be performed by a qualified electrician.
- Do not expose the device to excessive moisture or extreme temperatures.
- Keep out of reach of children.
- Use only the specified battery type (3x AA 1.5V batteries).
3. Product Overview
The AVATTO ZWT198 thermostat features a touch button interface and a clear digital display. It is designed for easy integration into your smart home system.
3.1. Components
- AVATTO ZWT198 Smart Thermostat
- Mounting Screws
- User Manual (this document)
3.2. Device Layout
Figure 3.2.1: Front View of Thermostat
Figure 3.2.2: Side View and Dimensions (86mm x 86mm x 28mm)
The thermostat features a glass mirror touch button design for intuitive control. It includes a Type-C interface (for potential future use or specific models, though primarily battery-powered) and a battery compartment.
4. Specifications
| Feature | Specification |
|---|---|
| Model Number | ZWT198 |
| Brand Name | AVATTO |
| Communication Method | Zigbee |
| State of Assembly | Ready-to-Go |
| Compatibility | All Compatible |
| Matching Device | Water Gas Boiler Dry Contact |
| Input Power | 3x AA Batteries |
| APP | Smart Life / Tuya |
| Voice Control | Alexa, Google Home, Alice |
| Temperature Sensor | NTC |
| Temperature Precision | ±1°C |
| Self-consumed Power | <170uW |
| Load Current | 3A (negative) |
| Protection Grade | IP20 |
| Temperature Hysteresis | 0.5~10℃ |
| Minimum Temperature Setting | 0.5℃ |
| Upper and Lower Temperature Limits | 15~95℃ |
5. Setup
5.1. Powering the Device
The AVATTO ZWT198 thermostat is powered by three 1.5V AA batteries, eliminating the need for a separate AC power installation.
Figure 5.1.1: Battery Installation
5.2. Wiring (Dry Contact)
This thermostat is designed for dry contact wiring with water or gas boilers. Connect the two cables from your boiler to the NC (Normally Closed), COM (Common), or NO (Normally Open) terminals as required by your boiler's specifications. Refer to your boiler's manual for specific wiring requirements.
Figure 5.2.1: Dry Contact Wiring Diagram
5.3. App Installation
Download the 'Smart Life' or 'Tuya Smart' app from your smartphone's app store (Google Play Store for Android, Apple App Store for iOS). Register or log in to your account.
5.4. Network Connection (Zigbee)
The AVATTO ZWT198 is a Zigbee device and requires a Zigbee gateway (hub) to connect to your Wi-Fi network and the Smart Life/Tuya app. Ensure your Zigbee gateway is already set up and connected to the app.
Figure 5.4.1: Thermostat with Zigbee Gateway
To pair the thermostat with your Zigbee gateway:
- Light up the thermostat screen by pressing any button.
- Press and hold the 'M' button (Mode button) on the thermostat for 5 seconds until the Wi-Fi icon starts flashing, indicating it's in connection status.
- Open the Smart Life/Tuya app on your smartphone.
- Navigate to your Zigbee gateway in the app.
- Select 'Add devices' or 'Search device' within the gateway settings.
- The app will discover the thermostat. Once found, confirm to add it.
- Follow any on-screen prompts to complete the pairing process.
Video 5.4.1: Zigbee Thermostat Network Connection Guide
This video demonstrates the process of connecting the thermostat to your network via a Zigbee gateway, including lighting up the screen, entering pairing mode, and adding the device through the Smart Life/Tuya app.
6. Operating Instructions
6.1. Basic Operation
The thermostat features touch buttons for easy control:
- Power Button (⏻): Turns the thermostat On/Off.
- Mode Button (M): Cycles through operating modes (Manual, Program, Temporary Program).
- Up Arrow (▲): Increases temperature setting or navigates menus.
- Down Arrow (▼): Decreases temperature setting or navigates menus.
After operating, the screen will turn off and enter standby status after 3.5 seconds to conserve battery power.
6.2. Operating Modes
The thermostat offers three operational modes:
- Manual Mode: Set your desired temperature manually. The thermostat will maintain this temperature until changed.
- Program Mode: Follows a pre-set weekly schedule.
- Temporary Program Mode: Allows a temporary temperature override while still in Program Mode. The thermostat will revert to the schedule after a set period or next scheduled period.
Figure 6.2.1: Mode Selection
6.3. Weekly Programming
The thermostat supports flexible weekly programming with 5+2, 6+1, or 7-day schedules. You can set up to 6 time slots on weekdays and 2 time slots on rest days, each with a different temperature setting.
Figure 6.3.1: Weekly Programmable Feature
To set up weekly programming via the app:
- Open the Smart Life/Tuya app and select your thermostat.
- Go to 'Settings' (usually a gear icon).
- Select 'Program' or 'Week Programming Settings'.
- Choose 'Weekday Setting' or 'Day Off Setting' to configure time periods and temperatures.
- Save your changes.
6.4. APP Remote Control
Control your thermostat from anywhere, anytime using the Smart Life/Tuya app. Adjust temperature, change modes, and manage settings remotely.
Figure 6.4.1: App Remote Control
6.5. Voice Control
Integrate your thermostat with voice assistants like Amazon Alexa, Google Home, and Yandex Alice for hands-free control. Link your Smart Life/Tuya account in the respective voice assistant app.
Figure 6.5.1: Voice Control Integration
6.6. Backlight Brightness Adjustment
Adjust the backlight brightness or turn it off completely via the app to avoid disturbing sleep.
Figure 6.6.1: Backlight Brightness Settings
6.7. Temperature Calibration
If the displayed room temperature is inaccurate, you can calibrate it from -9.9°C to +9.9°C via the app settings.
Figure 6.7.1: Temperature Calibration
6.8. Anti-frost Function
The anti-frost function automatically turns on the boiler for a short period if it hasn't been used for a long time, preventing pipes from freezing.
Figure 6.8.1: Anti-frost Function Setting
6.9. Children Lock
Activate the Children Lock function via the app to prevent unintended operation by children.
Figure 6.9.1: Children Lock Feature
6.10. Group Control Function
Control multiple thermostats in different rooms simultaneously by creating groups within the Smart Life/Tuya app.
Figure 6.10.1: Group Control Function
6.11. Family Share Function
Share control of your smart home devices, including the thermostat, with family members through the app's family sharing feature.
Figure 6.11.1: Family Share Function
7. Maintenance
- Cleaning: Wipe the thermostat's surface with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Battery Replacement: Replace the three AA 1.5V batteries when the low battery indicator appears on the display. Ensure correct polarity when inserting new batteries.
- Firmware Updates: Periodically check the Smart Life/Tuya app for available firmware updates to ensure optimal performance and new features.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Thermostat not turning on | Dead or incorrectly installed batteries. | Replace batteries, ensuring correct polarity. |
| Cannot connect to app/Zigbee gateway | Thermostat not in pairing mode; Gateway offline or too far; Incorrect app steps. | Ensure thermostat is in pairing mode (flashing Wi-Fi icon). Check gateway connection and proximity. Follow app pairing steps carefully. Restart thermostat and gateway if necessary. |
| Boiler not responding to thermostat | Incorrect wiring; Boiler issue; Thermostat not sending signal. | Verify wiring connections (NC, COM, NO) according to boiler manual. Check boiler's power and status. Ensure thermostat is set to an active mode and temperature. |
| Inaccurate temperature reading | Need for calibration; Sensor obstruction. | Use the temperature calibration feature in the app. Ensure no objects are blocking the thermostat's sensor. |
| Voice control not working | Incorrect linking of accounts; Voice command syntax error. | Ensure Smart Life/Tuya account is correctly linked to Alexa/Google Home. Use precise voice commands (e.g., "Alexa, set [device name] to [temperature]"). |
9. User Tips
- For optimal battery life, utilize the backlight brightness adjustment feature to dim or turn off the display when not in use.
- Regularly check the app for firmware updates to ensure your thermostat has the latest features and performance improvements.
- When setting up weekly programs, consider your daily routine to maximize energy efficiency and comfort.
- If experiencing connectivity issues, ensure your Zigbee gateway is centrally located and within range of the thermostat.
10. Warranty and Support
For warranty information and technical support, please refer to the official AVATTO website or contact their customer service. Keep your purchase receipt as proof of purchase.
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