Quick Summary
The HTW-WF03-NV1 boiler heating thermostat is designed for gas or water boiler systems. It uses dry contact control to switch heating safely and simply. The unit supports an external sensor and weekly schedules. This helps keep the indoor temperature steady during daily use.
This page explains how the thermostat works in real heating projects. It shows control logic, wiring ideas, and key limits. You will also see setup tips and common questions. This helps users understand and use the programmable functions more easily.
Key Functional Highlights
(This section explains the main functions and how this programmable boiler heating thermostat works in real heating systems.)
(01) Colourful LED Display with Adjustable Brightness
The screen shows clear temperature and status information during use. Brightness can be adjusted for day or night conditions. This makes it easier to read in different rooms. It supports simple and comfortable daily operation.
(02) Dry Contact Output for Boiler Control
This model uses dry contact to control gas or water boilers. It avoids direct voltage switching and keeps the system safer. The wiring matches common boiler setups. This helps reduce errors during installation.
(03) External Sensor Support for Flexible Control
An external sensor can measure temperature in another location if needed. This improves control in rooms with uneven heat. It helps avoid wrong readings near heat sources. The system stays more stable during operation.
(04) Weekly Programmable Operation
The weekly schedule allows automatic temperature control at different times. This reduces manual changes and saves time. It fits daily living patterns in homes or small projects. Heating runs more smoothly with planned settings.
(05) Low Temperature Protection Function
When the room temperature drops too low, heating will start automatically. The trigger range can be set between 0°C and 10°C. This helps prevent freezing when no one is inside. It improves safety during cold periods.
If a boiler thermostat with a WiFi feature is preferable, one may refer to this model instead (please click → HTW-WF03-NV3).
Product Design and Display
(This section shows the design and screen of this programmable boiler heating thermostat, including appearance and installation size.)
Technical Specifications
(This section lists the key parameters of this programmable boiler heating thermostat for project reference.)
| Parameter | Value |
|---|---|
| Power Supply | 100~240Vac, 50/60Hz |
| Output Load | 3A for boiler; 16A for electric floor type |
| Built-in Sensor | NTC3950, 10K |
| Setpoint Range | 5~35°C |
| Installation | 86×86 mm box or EU round box |
| Protection Class | IP20 |
| Warranty | 2 years |
Wiring Diagram
(This section shows the wiring of this programmable boiler heating thermostat in a typical boiler 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 explains where this programmable boiler heating thermostat may not fit, and what custom options can be discussed.)
This model is not suitable for high-power electric floor heating systems. It cannot directly switch 16A electric heating loads. The standalone version does not support BMS connection or remote app control. It is also not designed for multi-zone central control projects.
Despite these limits mentioned above, some functions can still be adjusted. Control logic or communication options may be discussed for projects. Sensor settings and temperature ranges can also be reviewed. Final changes depend on quantity and technical feasibility.
OEM options are available for project needs. This includes logo printing, colour changes, and label updates. Packaging and language can also be adjusted if needed. Details can be confirmed during the project discussion.
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 model be used for electric floor heating?
This model is made for boiler systems using dry contact output. It does not switch high-power electric loads. For floor heating, a 16A model is needed.
Q2: Why use an external sensor in some projects?
The external sensor measures temperature away from the thermostat. This avoids wrong readings near heat sources. It helps improve overall control accuracy.
Q3: Is it suitable for both gas and water boilers?
Yes, it works with both gas and water boilers. The dry contact output matches common control methods. It is easy to integrate into standard systems.
Q4: How to choose between the standalone and Wi-Fi versions?
Standalone is suitable for simple local control. Wi-Fi allows remote access through a mobile app. The choice depends on project needs.
Q5: What is the MOQ and are samples available?
We can provide samples for testing before ordering. The usual MOQ is 300 units. Smaller trial orders like 100 units can be discussed.
Q6: How can I place an order and arrange delivery?
Please contact us to confirm your requirements first. We will issue a PI after confirmation. Payment supports TT, PayPal, and Visa with EXW, FOB, or DAP terms.
Q7: How long does production usually take?
Non-custom samples can be ready within 7 days. Custom samples usually take 3–5 weeks. Bulk orders like 300 units need about one month.
Q8: What shipping methods are available?
Courier delivery usually takes about 7 days. Air freight takes around 7 days as well. Sea shipping takes over one month depending on route.
Need Help Choosing the Right Model?
If you are working on a heating project, we can help check your needs. Contact us anytime for simple advice and support.
Related Thermostat Models
For more details, please click here directly: Wi-Fi Thermostats | Electric Floor Thermostats | Water Heating Thermostats
Final Note
Heating systems need stable control and safe operation over time. This model works as a boiler control device for daily heating use. It helps keep the temperature steady and supports easier system management in real projects.
