Quick Summary
HTW-WF01-FC-MEW24 is a temperature controller thermostat designed for FCU systems. It controls 3-speed fan and 2-pipe modulating valve. It supports cooling and heating modes with stable temperature regulation. The built-in and external sensor options improve sensing accuracy in real installations.
This page explains how this temperature controller thermostat works in real FCU projects. It also covers control logic, parameter checks, and wiring understanding. You will also see how Wi-Fi control helps daily operation. Some project customisation options are also introduced.
Key Functional Highlights
(This section introduces the main control functions and their engineering value of this Wi-Fi temperature controller thermostat in FCU systems.)
(01) 24V Power Supply Flexibility
A 24V supply makes installation safer in many commercial projects. It reduces risk during wiring and maintenance work. Optional 110–240VAC support allows better compatibility across different regional standards.
(02) 3-Speed Fan Control
This temperature controller thermostat supports direct control of 3-speed fan motors. It helps balance airflow and energy use across different load conditions. Stable fan switching improves comfort and reduces system noise in daily operation.
(03) 2-Pipe Modulating Valve Control
Modulating valve control allows smoother water flow adjustment. It avoids frequent on/off cycling and improves system stability. This is useful in projects requiring better temperature control accuracy and longer valve lifespan.
(04) External Sensor Function
An external sensor improves temperature detection in complex spaces. It is useful when wall installation does not reflect real room conditions. This helps avoid overheating or overcooling in sensitive environments.
(05) Wi-Fi App Control
Wi-Fi allows remote access through mobile applications. It supports basic control and monitoring without complex BMS systems. This is suitable for small to medium projects needing simple central management.
Product Design and Display
(This section shows the thermostat appearance, screen interface, and installation dimensions of this Wi-Fi temperature controller thermostat.)
Technical Specifications
(This section lists the key technical parameters relevant to this temperature controller thermostat model.)
| Parameter | Value |
|---|---|
| Power Supply | 24Vac, 50/60Hz |
| Fan Relay Load | 5A |
| Sensor Type | NTC3950, 10K |
| Temperature Accuracy | ±0.5°C |
| Set-Point Range | 5~35°C |
| Protection Class | IP20 |
| Warranty | 2 Year |
| Installation | EU round box or 86x86mm box |
Wiring Diagram
(This section provides the wiring diagram for this Wi-Fi temperature controller thermostat in FCU systems.)
Model Code Guide
(This section explains what configuration the model code refers to.)
| Fan coil series | xx stands for |
| EC | EC fan |
| 2/4 | 2 for 2-pipe on/off; 4 for 4-pipe on/off system |
| M | Modulating valve control |
| W | Wi-Fi |
| N/B | N for Modbus; B for BACnet |
| K/E | K for Keycard; E for External sensor |
| 24 | Powered by 24V, or with 24V output for 0-10V valve |
| Example HTW-WF11-FC-xx: if xx = 2EN, it stands for a 3-speed fan, 2-pipe system with on/off valve control, external sensor function, and Modbus communication. Most sub-models are ready-made. Kindly contact us to confirm availability. | |
Project Fit & Customization
(This section describes project suitability, system limitations, and available customization options for this Wi-Fi temperature controller thermostat.)
This model is not suitable for BACnet or Modbus BMS integration. It does not support complex multi-zone central control systems. It is also not designed for high-power fan loads beyond relay capacity.
Despite these limits, we can support function-based ODM adjustments. Wi-Fi functions can be upgraded or modified based on project needs. Control logic or interface settings can also be discussed and adjusted.
We also support OEM requirements for branding and appearance. This includes logo printing, colour changes, and packaging options. Please feel free to get in touch with us to discuss details.
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 thermostat control both the fan and the valve in one system?
Yes, this temperature controller thermostat controls both fan and valve. It supports a 3-speed fan and modulating valve control. This makes it suitable for standard FCU applications.
Q2: How does the external sensor improve control?
The external sensor measures temperature away from the wall. This improves accuracy in large or uneven spaces. It helps maintain stable comfort conditions.
Q3: Does the Wi-Fi support BMS integration?
No, Wi-Fi is designed for app control only. It does not replace Modbus or BACnet systems. It is suitable for simple remote management.
Q4: Is this model suitable for 4-pipe systems?
No, this model is designed for 2-pipe systems. It does not support separate heating and cooling valves. Please confirm system type before selection.
Q5: What is the MOQ and can I order samples?
We support sample orders for testing and evaluation. Standard MOQ is 300 units. Smaller quantities like 100 units may be discussed.
Q6: How do we place an order and arrange shipping?
Please share your requirements and we will provide a PI. We support TT, PayPal, and Visa. Terms such as EXW, FOB, and DAP are available.
Q7: What is the typical production lead time?
Standard samples are ready within 7 days. Customisation usually takes 3 to 5 weeks. Bulk orders like 300 units need about one month.
Q8: What shipping methods are available?
Courier delivery usually takes about 7 days to the door. Air freight takes around 7 days, depending on location. Sea freight takes about one month or longer.
Need Help Choosing the Right Model?
If you are not sure which temperature controller thermostat fits your project, please feel free to get in touch with us. We can help check your system and suggest a suitable option.
Related Thermostat Models
For more details, please click here directly: Wi-Fi Thermostats | Modbus Thermostats | BACnet Thermostats
Final Note
In FCU projects, stable temperature control and simple operation are always key goals. This temperature controller thermostat manages fan and valve together with Wi-Fi access. It helps improve daily operation, reduce manual work, and support efficient facility management.
