Quick Summary
The HTW-WF03-NV3 room thermostat is designed for boiler heating systems with dry contact output. It supports gas and water boilers and works with an external sensor. It also offers WiFi app control and weekly programming. The LED display improves visibility during daily operation.
This page explains how it works in boiler heating projects. It covers control logic, wiring approach, and parameter setup in simple terms. One will also find practical notes for installation and selection. Common questions are included to support project decisions.
Key Functional Highlights
(This section introduces the main control functions and their engineering value in boiler heating systems.)
01 – LED Display with Adjustable Brightness
The colourful LED display improves readability in different lighting conditions. Adjustable brightness helps avoid glare during night use. This supports stable daily operation in residential or hotel environments. Clear visual feedback helps users confirm settings quickly.
02 – Boiler Heating Control with Dry Contact
This room thermostat uses dry contact output for boiler heating control. It supports both gas boilers and water boilers in common projects. This method keeps wiring simple and widely compatible. It also helps reduce risks during system integration.
If one is looking for another heating type, say, an electric underfloor heating thermostat, one may refer to this model instead (please click → HTW-WF03-16A3).
03 – External Sensor Support
An external sensor allows better temperature measurement in selected locations. This improves control accuracy in large or uneven spaces. It also supports floor or remote sensing if required. The system remains stable under different layout conditions.
04 – Weekly Programmable Function
The weekly schedule allows automatic temperature adjustment based on daily routines. This reduces manual operation and improves energy usage. It helps maintain comfort during occupied periods. The control logic stays simple for users.
05 – WiFi App and Voice Control
WiFi allows remote control through a mobile app. Users can adjust settings without being on site. Voice control through the app adds convenience in daily use. This room thermostat supports flexible control in modern projects.
Product Design and Display
(This section shows the thermostat appearance, screen interface, or installation dimensions of this specific model.)
Technical Specifications
(This section lists the key technical parameters relevant to this thermostat model.)
| Parameter | Value |
|---|---|
| Power Supply | 100~240Vac, 50/60Hz |
| Output Load | 3A (water/boiler); 16A (electric heating) |
| Sensor Type | NTC3950, 10K |
| Setpoint Range | 5~35°C |
| Installation | 86×86 mm or EU round box |
| Protection Class | IP20 |
| Warranty | 2 years |
Wiring Diagram
(This section provides the wiring diagram for this thermostat in the relevant HVAC control system.)
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 line voltage output terminals + External Sensor |
| NV | Boiler Heating, with Non-Voltage Dry Contact |
| 1/3 | 1 = standalone; 3 = with Wi-Fi |
| 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 & Customisation
(This section describes project suitability, system limitations, and available customization options.)
This room thermostat is not suitable for systems requiring direct high-power load switching. It does not support BMS protocols like Modbus or BACnet. Projects needing centralised control should consider communication models. It is also not designed for outdoor or high-humidity environments.
Despite these limits mentioned above, function customisation can be discussed. Communication options or control logic may be adjusted for specific projects. We support engineering-level discussion to match system requirements. Final feasibility depends on project details and quantity.
OEM customisation is also available for project needs. Logo printing, colour changes, and label design can be supported. Packaging and user interface may also be adjusted. These options help match brand and project standards.
Certificates 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: Can this room thermostat work with all boiler heating systems?
It works with most gas and water boilers using dry contact input. Compatibility depends on the boiler control interface. Always check wiring requirements before installation.
Q2: How does the external sensor improve control?
The external sensor measures temperature in a different location. This helps improve accuracy in large or uneven spaces. It supports more stable control in real projects.
Q3: Does this model support electric floor heating?
This model is designed for boiler heating systems. Electric heating requires a 16A output version. Please select the correct model based on load type.
Q4: Can this room thermostat be used in large projects?
It suits standalone or small distributed control projects. It does not support central BMS integration. For large systems, other models may be more suitable.
Q5: What is the MOQ and do you support samples?
We support samples for testing before bulk orders. Standard MOQ is 300 units. Smaller trial orders like 100 units can be discussed.
Q6: How can I place an order?
Please contact us to confirm your requirements first. We will issue a PI after confirmation. Payment supports TT, PayPal, and Visa.
Q7: How long does production take?
Non-custom samples are ready within 7 days. Custom samples need 3–5 weeks depending on requirements. Bulk orders like 300 units take about one month.
Q8: What shipping options are available?
Courier delivery takes about 7 days door-to-door. Air freight also takes around 7 days. Sea shipping usually takes over one month.
Need Help Choosing the Right Model?
If you are planning a boiler heating project, we can help. Share your system details for quick model advice.
Related Thermostat Models
For more details, please click here directly: Wi-Fi Thermostats | Electric Floor Thermostats | Water Heating Thermostats
Final Note
Heating projects require stable and reliable temperature control in daily operation. This room thermostat works for boiler heating control with simple logic. It helps improve system stability, supports energy management, and keeps maintenance straightforward.
