Quick Summary
HTW-WF11-FC-MEB is a modulating thermostat for fan coil units in commercial rooms. It controls a 3-speed fan and a 0–10V modulating valve. The controller supports 2-pipe FCU systems for heating or cooling. BACnet communication enables integration with building management systems.
This page explains how the modulating thermostat works in typical FCU projects. It outlines control logic, installation reference, and main parameters. Typical deployment questions and integration notes are also included. Customisation options for engineering projects are briefly introduced.
Key Functional Highlights
(This section explains the core control functions and their practical value.)
(1) Modulating valve control
A modulating thermostat adjusts valve opening through a 0–10V signal. This provides smoother temperature control. Gradual valve movement improves comfort and reduces temperature fluctuation in fan coil operation.
If one is looking for the on/off valve control instead of the 0-10V output, we would like to recommend this BACnet model instead (HTW-WF11-FC-EB).
(2) External temperature sensing option
The controller can use a remote temperature sensor instead of the internal one. This helps when the wall location is not ideal. Accurate sensing improves room control and prevents false temperature readings.
(3) BACnet communication integration
BACnet communication allows the modulating thermostat to connect with building automation systems. Central monitoring becomes easier. Facility managers can view status and adjust parameters through the BMS interface.
(4) Stable fan coil fan control
Three fan speeds support flexible airflow adjustment for different room conditions. The thermostat selects the proper speed based on temperature difference. This improves comfort and reduces unnecessary fan noise.
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 | 95–240 VAC, 50/60Hz |
| Fan Control | 3-speed fan |
| Valve Control | 0–10V modulating valve |
| Current Load | Fan relay 5A; valve relay 5A |
| Temperature Accuracy | ±0.5°C |
| Set-Point Range | 5–35°C |
| Sensor Type | NTC3950, 10K |
| 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.)
| 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 explains where the product can be used, its limits, and OEM/ODM options.)
This modulating thermostat is not suitable for standalone projects without building network control. It also does not provide Wi-Fi connection or mobile app control. Systems requiring wireless smart control should consider other models.
Despite these limits mentioned above, ODM function adjustments can still be discussed. Projects may request special control logic or protocol variations. Technical feasibility and development cost need confirmation before production.
OEM cooperation is also supported for many projects. Logo printing, panel colour change, and label customisation are common requests. Packaging design and product marking can also follow brand requirements.
Certifications
Exhibition Moments
Frequently Asked Questions
1. Can this modulating thermostat work with different fan coil systems?
This modulating thermostat is designed for 2-pipe fan coil systems with 0–10V valve control. Compatibility should be confirmed with the project wiring and valve type.
2. How is the external sensor used in installation?
The thermostat allows either the internal sensor or a remote sensor. The external sensor is recommended when the thermostat position cannot reflect real room temperature.
3. Can the thermostat connect to a building management system?
Yes. This model supports BACnet communication for integration with building automation systems. The BMS can monitor status and adjust some parameters remotely.
4. What is the minimum order quantity and can I order samples?
Thermostat samples are available for testing before project use. The typical minimum order quantity is 300 units, although smaller trial quantities can sometimes be discussed.
5. How can I place an order?
Please contact us to confirm model details and project requirements. We will then provide a proforma invoice. Payment methods include TT, PayPal, Visa and similar options.
6. What shipping methods are available?
Courier door-to-door delivery is usually recommended and takes about seven days. Air freight also takes around seven days, while sea shipping normally requires one month or more.
Need Support?
If you need help selecting a modulating thermostat for your FCU project, feel free to contact us. Our team can assist with application checks and model confirmation.
