Quick Summary
The HTW-HT03P-3ANV3 is a boiler heating thermostat for water heating or boiler heating systems. Different terminals support different heating connections during installation. The internal sensor measures room temperature and controls heating output. Wi-Fi connection through the Tuya application allows remote control and monitoring.
This page explains how the boiler heating thermostat works in heating projects. It describes the control functions and their practical meaning. Wiring, technical parameters, and installation conditions are also explained. Model guidance, project considerations, and common questions are included.
Key Functional Highlights
(This section introduces the main control functions and their engineering value in the specific HVAC system.)
(01) Water heating or boiler heating control
This boiler heating thermostat can work with water heating or boiler heating systems. The controller provides different terminals for different heating equipment. Installers connect the correct terminals during installation to match the heating system.
(02) Wi-Fi control with Tuya application
The thermostat supports Wi-Fi communication through the Tuya mobile application. Users can check the room temperature and adjust settings remotely. This boiler heating thermostat allows simple remote supervision for homes or small heating systems.
If this Wi-Fi communication is not needed, one may refer to this model instead (click → HTW-HT03P-3ANV1).
(03) Anti-freeze protection
The thermostat includes anti-freeze protection for winter conditions. When room temperature falls near 5°C, heating will start automatically. This function helps prevent pipes or equipment from freezing during long idle periods.
(04) Positive display or negative display optional
Two screen display styles are available for different installation environments. Positive display uses dark characters on a light background. Negative display uses light characters on a dark background for modern interior designs.
(05) °C or °F display option
The thermostat can show temperature in Celsius or Fahrenheit. Users can choose the preferred unit during configuration. This helps the boiler heating thermostat fit projects in different countries or markets.
Display
(This section shows the thermostat appearance, screen interface, or installation dimensions of this specific model.)
Specifications
(This section lists the key technical parameters relevant to this thermostat model.)
| Parameter | Value |
|---|---|
| Power Supply | 100–240VAC, 50/60Hz |
| Output Load | 3A for water or boiler heating |
| Sensor Type | Built-in NTC3950, 10K |
| Setpoint Range | 5–35°C |
| Installation | 86×86 mm junction box or EU round box |
| Protection Class | IP20 |
| Display Type | Positive display or negative display |
| Warranty | 2 years |
Wiring
(This section provides the wiring diagram for this thermostat in the relevant HVAC control system.)
Guide
(This section explains what configuration the model code refers to.)
| Heating series | xx stands for |
|---|---|
| 3A | Water Heating, with NC+NO+COM output terminals |
| 16A | Electric Underfloor Heating, with L+N line voltage output terminals + External Sensor |
| NV | Boiler Heating, with Non-Voltage Dry Contact |
| Example HTW-WF11-xx: if xx = 16A3, it stands for electric floor heating with external sensor support and Wi-Fi function. Most sub-models are ready-made. Kindly contact us to confirm availability. | |
Project Fit & Customization
(This section describes project suitability, system limitations, and available customization options.)
This thermostat is designed for local heating control in homes or small buildings. It does not support RS485 or other BMS communication protocols. Therefore it is not suitable for building automation systems. The device also works only with its internal temperature sensor.
Despite these limits mentioned above, some functions can still be customised. Communication modules or firmware logic may be adjusted for specific projects. Our engineers review the project requirements before confirming any modification. Custom functions normally require suitable order quantity.
OEM cooperation is also supported for brand projects. Logo printing, product labels, and packaging design can be customised. Housing colour and interface style may also be discussed depending on production conditions.
Certifications
(This thermostat complies with European market requirements and is supported by certifications such as CE, RoHS, LVD test reports, EMC test reports, etc)
Exhibition Moments
(Our team regularly participates in international HVAC exhibitions such as Febrava in Brazil, The Big 5 in Dubai, and ISK-SODEX in Turkey, etc.)
Frequently Asked Questions
Q1. Can this boiler heating thermostat work with both water heating and boiler heating systems?
Yes, this boiler heating thermostat supports both water heating and boiler heating systems. The device has different terminals for different heating connections, so installers must connect the correct terminals during installation.
Q2. Does this thermostat support an external temperature sensor?
No, this model uses only a built-in NTC temperature sensor. The thermostat measures room temperature directly from its installation position.
Q3. How does the Tuya function work on this thermostat?
The thermostat connects to Wi-Fi and communicates with the Tuya mobile application. Users can monitor room temperature and adjust the setpoint remotely.
Q4. Can this thermostat connect to a building management system?
No, this model comes with Wi-Fi communication, which also supports group control. However, it does not include Modbus or other building management communication protocols.
Q5. What is the minimum order quantity and can I get samples?
Yes, samples are available for testing and evaluation. The usual minimum order quantity is about 300 units, but smaller trial orders such as 100 units can also be discussed.
Q6. How can I place an order and arrange shipping?
Please contact us to confirm your requirements first. We then provide a PI, and payment methods such as TT, PayPal, or Visa are supported. Shipping terms like EXW, FOB, or DAP are available.
Q7. How long does product preparation usually take?
Standard samples are normally shipped within seven days. Custom products require program adjustment and evaluation, usually three to five weeks. A batch of about 300 units usually needs around one month preparation.
Q8. How are the thermostats usually shipped?
Courier delivery such as FedEx, DHL, or UPS is commonly used and takes about seven days. Air freight is similar in time, while sea freight usually takes more than one month depending on the route.
Need Support?
If you are planning a heating project, we can help review thermostat selection. Please contact us for application advice or heating system discussion.
Final Note
Heating projects require stable room temperature control and reliable system operation. The HTW-HT03P-3ANV3 boiler heating thermostat manages heating output in water or boiler heating systems. This helps maintain stable heating control and supports efficient operation in residential heating projects.
