Quick Summary
The HTW-WF01-NV2 Modbus Thermostat for Gas Boiler Heating System is designed for indoor boiler control. It uses non-voltage dry contact terminals to start or stop heating. The unit works with a 100–240 Vac supply. Built-in sensing and an external sensor support stable temperature control.
This page explains how the Modbus Thermostat for Gas Boiler Heating System works in HVAC projects. It describes the control logic, wiring reference, and key parameters. Modbus communication and system integration are also explained. OEM and ODM options for the Modbus Thermostat for Gas Boiler Heating System may also be discussed.
Key Features
(The core control functions and their practical value)
1. Boiler Heating Control Output
This Modbus Thermostat for Gas Boiler Heating System controls boilers through a dry contact output signal. The contact sends a heating request to the boiler. This structure is widely used in residential heating systems.
2. Modbus Communication Integration
The thermostat supports Modbus communication through an RS485 interface. A building system can read temperature data and device status. This allows the Modbus Thermostat for Gas Boiler Heating System to work with BMS platforms.
3. Programmable Heating Schedule
The thermostat allows daily heating programming. Users can set temperature periods for different times of day. This helps reduce energy waste while keeping indoor comfort stable.
4. External Temperature Sensor
An external sensor can measure temperature away from the thermostat location. This improves accuracy in larger rooms. The Modbus Thermostat for Gas Boiler Heating System can therefore control heating more precisely.
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
(The key parameters for reference and project confirmation)
| Parameter | Value |
|---|---|
| Power Supply | 100–240 Vac, 50/60Hz |
| Output Load | 3A for water/boiler heating; 16A for electric heating |
| Built-in Sensor | NTC3950, 10K |
| Setpoint Range | 5–35°C |
| Installation | 86×86 mm junction box or EU round box |
| Protection Class | IP20 |
| External Sensor | Supported |
| Warranty | 2 years |
Wiring Diagram
(Clear wiring references to help you complete the installation quickly and correctly.)
Model Code Guide
(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-WF01-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
(Where the product can be used, its limits, and OEM/ODM options)
This Modbus Thermostat for Gas Boiler Heating System is designed for boilers using dry contact signals. It does not switch electric heating loads directly. Installations requiring Wi-Fi remote control should select other thermostat models. Systems requiring high voltage switching should also use different devices.
Despite these limits mentioned above, ODM cooperation may still be discussed. Communication settings or control behaviour may be adjusted for projects. Our engineers usually review heating system requirements before confirming suitable solutions.
OEM customisation is also supported for brand projects. Logo printing on the thermostat panel can be arranged. Product labels and packaging design can also be customised. These options help the Modbus Thermostat for Gas Boiler Heating System match different project requirements.
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. What heating systems can this Modbus Thermostat for Gas Boiler Heating System control?
It is designed for water or gas boiler systems using dry contact control signals.
Q2. Does the thermostat support Modbus communication?
Yes. The thermostat supports RS485 Modbus communication for integration with building management systems.(If you need wifi function, click here)
Q3. Is installation compatible with standard wall boxes?
Yes. The thermostat fits 86×86 mm junction boxes and EU round boxes used in heating installations.
Q4. What is the minimum order quantity and are samples available?
Samples are available for testing. The usual minimum order quantity is about 300 pieces, though smaller trial quantities may be discussed.
Q5. How can we place an order?
Please contact us with your requirements. After confirmation we provide a proforma invoice. Payment supports TT, PayPal, Visa and similar methods.
Q6. How are the products usually shipped?
Express delivery normally takes about seven days. Air freight takes similar time. Sea shipping usually requires over one month.
Need Support?
If you need help selecting a Modbus Thermostat for Gas Boiler Heating System, please contact us. Our team can help confirm wiring compatibility and system configuration.
Related Thermostat Models
More product details, please click directly:
Water Heating Thermostat
Electric Underfloor Heating Thermostat
