Quick Summary
HTW-WF11-NV3 is a boiler heating thermostat designed for boiler-based space heating control. It uses dry contact terminals to switch the boiler heating system safely. The thermostat supports scheduling and external sensor monitoring. WiFi connectivity allows remote adjustment and voice-based operation.
This page explains how the boiler heating thermostat works in real projects. It includes function explanations, wiring reference, and key technical parameters. Guidance is also provided for selecting the correct model configuration. Typical installation questions and project considerations are addressed.
Key Functional Highlights
(This section explains the core control functions and their practical value.)
1. Boiler Heating Dry Contact Control
The boiler heating thermostat provides dry contact output terminals for boiler control. This allows safe switching without supplying voltage to the boiler circuit. The design suits many boiler heating control inputs used in residential and light commercial systems.
2. Weekly Programming Control
The thermostat includes a programming function that allows temperature schedules across the week. Users can define heating periods and standby periods. This helps maintain stable comfort while reducing unnecessary boiler operation and energy consumption.
3. External Sensor Overheat Protection
An external floor sensor can monitor the temperature of the heated surface. When the floor temperature reaches the set safety limit, the boiler heating thermostat adjusts operation. This function helps prevent overheating in underfloor heating installations.
4. WiFi Remote and Voice Control
The built-in WiFi module allows the boiler heating thermostat to connect with mobile applications. Users can change setpoints, modes, and schedules remotely. Voice control integration is also supported through compatible smart home platforms.
If one is looking for a boiler heating thermostat without a WiFi function, this model may be referred to (HTW-WF11-NV1).
Display
(This section shows the product’s dimensions and the interface layout.)

Specifications
(This section lists the key parameters for reference and project confirmation.)
| Parameter | Value |
|---|---|
| Power Supply | 100~240Vac, 50/60Hz |
| Output Load | 3A for water and boiler heating type; 16A for electric floor heating type |
| Built-in Sensor | NTC3950, 10K |
| Setpoint Range | 5~35°C |
| Installation | 86×86 mm junction box or EU round box |
| Protection Class | IP20 |
| Warranty | 2 years |
Wiring
(This section provides the wiring reference diagram for correct installation.)

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 |
| 1/2/3 | 1 = Standalone, 2 = Modbus, 3 = 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 & Customization
(This section explains where the product can be used, its limits, and OEM/ODM options.)
This boiler heating thermostat is not suitable for systems requiring high-current load switching. It should not directly control electric heaters or floor heating cables. Standalone operation also means it cannot integrate with building BMS platforms or Modbus automation systems.
Despite these limits mentioned above, functional adjustments can still be discussed. Communication options or sensing logic may be adapted depending on project scale. Our team reviews each application case before confirming feasibility for ODM level functional adjustments.
OEM cooperation is also available for long-term projects. Customers may request logo printing, packaging adjustments, colour changes, or customised labels. These changes allow the boiler heating thermostat to match branding or project documentation requirements.
Certifications

Exhibition Moments

Frequently Asked Questions
Q1. What type of heating system is this thermostat designed for?
This boiler heating thermostat is designed for boiler-based heating systems using dry contact control. It connects to boiler control terminals and switches heating operation based on the temperature setpoint.
Q2. Can this thermostat protect underfloor heating systems from overheating?
Yes. When an external sensor is installed, the boiler heating thermostat can monitor floor temperature. The system can limit excessive heating to protect floor materials and improve comfort stability.
Q3. Does the thermostat support remote control?
Yes. The WiFi version allows remote control through a mobile application. Users can change temperature settings, modes, and schedules without adjusting the device directly.
Q4. What is the minimum order quantity and can samples be provided?
Samples are available for evaluation before project deployment. Standard minimum order quantity is usually 300 units, but smaller trial batches may also be discussed depending on project conditions.
Q5. How can we place an order?
Please contact us to confirm your project requirements. After confirmation, we will provide a proforma invoice. Payment can be made via TT, PayPal, Visa and other common methods.
Q6. What shipping methods are available?
Express courier delivery is usually recommended and takes about seven days. Air freight also takes around one week, while sea shipping normally requires more than one month.
Need Support?
If you need application advice or project confirmation, feel free to contact us. Our engineers can help evaluate whether this boiler heating thermostat fits your installation.







