Quick Summary
The HTW-WF01-3A1 water heating thermostat is designed for water-based floor heating systems. It controls heating devices through NC, NO, and COM output terminals. The thermostat works with a 100–240 Vac power supply. An external sensor can monitor floor temperature and prevent overheating.
This page explains how the water heating thermostat works in real installations. It introduces control functions and their practical meaning. Wiring reference and technical parameters are also provided. OEM and ODM options for this water heating thermostat are briefly explained.
Key Features
(The core control functions and their practical value.)
1. Water Heating Control Output
This water heating thermostat provides a 3A control output. The output suits typical water heating valves or pumps. NC, NO, and COM terminals allow flexible wiring for different heating installations.
2. Weekly Programming Control
The thermostat supports programmable temperature schedules. Users can set different temperatures for different times of the day. This allows heating to run only when needed.
3. Energy Saving Mode
Energy saving mode reduces heating during idle periods. The thermostat automatically lowers the target temperature. This helps reduce energy use in homes and light commercial spaces.
4. External Temperature Sensor Protection
The thermostat supports connection with an external temperature sensor. The sensor continuously monitors the heating system temperature. This protection helps prevent overheating and ensures safe and stable operation.(If you need wifi function-click here)
Product Design and Display
The thermostat appearance and interface layout to fully grasp the display effect and performance of the thermostat in real-world use
Technical Specifications
(Key parameters for reference and project confirmation.)
| Parameter | Value |
|---|---|
| Power Supply | 100–240 Vac, 50/60 Hz |
| Output Load | 3A for water/boiler heating; 16A for electric heating |
| Built-in Sensor | NTC3950, 10K |
| Setpoint Range | 5–35°C |
| External Sensor | Supported |
| Installation | 86×86 mm junction box or EU round box |
| Protection Class | IP20 |
| Warranty | 2 years |
Wiring Diagram
Clear wiring references to help you complete the installation quickly and correctly
Model Code 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 voltage output terminals + External Sensor |
| NV | Boiler Heating, with Non-Voltage Dry Contact |
| 1 / 2 / 3 | 1 = Standalone, 2 = Modbus, 3 = Wi-Fi |
| Example HTW-WF01-xx | If xx = 16A3, it means electric floor heating with external sensor and Wi-Fi. Most sub-models are ready-made. Please contact us to confirm availability. |
Project Fit & Customization
(This section explains where the product can be used, its limits, and OEM/ODM options.)
This water heating thermostat is not suitable for high power electric heating loads. It also does not support Modbus communication or Wi-Fi connection. Therefore it cannot connect to building management systems or mobile apps. The device works mainly as a standalone thermostat. It is intended for normal indoor heating installations.
Despite these limits mentioned above, some function customisation may still be discussed. ODM projects may adjust control logic or communication type. Our engineers normally review the heating system first. After evaluation, we suggest possible technical options.
OEM customisation is also available for project or brand needs. Logo printing on the front panel can be arranged. Label and packaging design can also be customised. These changes help the water heating thermostat match different brand projects.
Certifications and Compliance
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. What heating systems can this thermostat control?
It is designed for water heating systems. The NC, NO, and COM outputs allow switching control for valves or pumps used in floor heating systems.
Q2. Does the thermostat support floor temperature protection?
Yes. An external sensor can monitor floor temperature. This protection helps prevent overheating and protects flooring materials used in heating installations.
Q3. Is installation compatible with standard wall boxes?
Yes. The thermostat fits 86×86 mm wall boxes and EU round boxes. These boxes are widely used in residential and commercial heating installations.
Q4. What is the minimum order quantity and are samples available?
Samples are available for testing. The typical minimum order quantity is about 300 pieces, though smaller trial quantities may sometimes be discussed.
Q5. How can we place an order?
Please contact us with your requirements. After confirmation we send a proforma invoice. Payment methods include TT, PayPal, Visa and others.
Q6. How are the products usually shipped?
Express delivery usually takes about seven days. Air freight takes similar time. Sea shipping normally requires more than one month.
Need Support?
If you are selecting a water heating thermostat for a project, please contact us. Our team can help confirm wiring, system compatibility, and suitable model selection.
Related Thermostat Models
More product details, please click directly:
Electric Underfloor Heating Thermostat
Gas Boiler Heating Thermostat
