Quick Summary
HTW-WF01-FC-MKN is a modulating thermostat used in 2-pipe fan coil systems. It controls a 3-speed fan and a 0–10V valve. The thermostat supports both cooling and heating operations. It also includes hotel keycard input and RS485 communication.
This page explains how the modulating thermostat works in real FCU projects. It helps us check key functions, control logic, and main parameters. It also covers common questions and project-side concerns. For special needs, please feel free to get in touch with us.
Key Functional Highlights
(This section introduces the main control functions of this modulating thermostat and explains their engineering value in fan coil projects.)
(01) 3-speed fan control
This function helps the unit match airflow to room demand. It supports more stable comfort in daily use. It also helps reduce noise and unnecessary fan running.
(02) 2-pipe modulating valve control
This Modbus thermostat supports 2-pipe FCU control with a modulating valve. It helps the valve adjust output more smoothly. This improves room stability and supports better energy control.
(03) Hotel keycard function
The keycard input is useful in hotel guest room projects. It helps link occupancy status with system operation. This can reduce wasted running time when the room is empty.
(04) Energy saving mode
The energy saving mode helps lower unnecessary cooling or heating demand. It supports better control during unoccupied periods. This is helpful for hotel operation and running cost control.
(05) RS485 Modbus for BMS
With RS485, the modulating thermostat can connect with a building management system. This supports central monitoring and easier parameter checking. It is useful for maintenance planning and daily facility management.
Product Design and Display
(This section shows the appearance, screen interface, and installation dimensions of this Modbus thermostat model.)
Technical Specifications
(This section lists the key technical parameters that help us confirm the main performance of this modulating thermostat.)
| Parameter | Value |
|---|---|
| Model | HTW-WF01-FC-MKN |
| Application | 2-pipe fan coil system |
| Fan Control | 3-speed fan |
| Valve Control | 0–10V modulating valve |
| Communication | RS485 Modbus |
| Key Function | Hotel keycard input |
| Control Mode | Cooling / Heating |
| Customisation | OEM supported; ODM by discussion |
Wiring Diagram
(This section provides the wiring diagram of this Modbus thermostat for the relevant fan coil control system.)
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 where this Modbus thermostat fits, what limits should be noted, and what custom options we can discuss.)
This modulating thermostat is not suitable for systems outside fan coil control. It is also not designed for heat pump logic or multi-stage compressor projects. Projects needing BACnet, Wi-Fi, or app control will need another version.
Despite these limits, we can discuss function changes for suitable projects. For example, communication type, control logic, or input functions may be adjusted. We review each request based on system needs and actual project scope.
OEM service is also available for project branding needs. We can support logo printing, label changes, and colour customisation. Please feel free to get in touch with us for further 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. Is HTW-WF01-FC-MKN suitable for all fan coil systems?
No, it is mainly designed for 2-pipe FCU systems. It is not the right choice for all HVAC layouts. We should confirm the fan and valve type first.
Q2. What kind of valve does this model control?
This model is made for a 0–10V modulating valve. It does not use a simple on/off valve control. This helps the system adjust output more smoothly.
Q3. Can this model connect to a BMS?
Yes, this model supports RS485 communication for BMS use. It works as a Modbus thermostat in suitable building projects. This is useful for central checking and management.
Q4. What is the keycard function used for?
It is mainly used in hotel room projects. The thermostat can respond to room occupancy status through the keycard input. This helps reduce unnecessary energy use.
Q5. Do you support samples, and what is the MOQ?
Yes, we support samples for checking and testing. Our usual MOQ is 300 units. A smaller trial order, such as 100 units, can also be discussed.
Q6. How can we place an order and arrange shipment?
Please feel free to get in touch with us first to confirm the details. We then provide a PI for review. We support TT, PayPal, Visa, and terms such as EXW, FOB, and DAP.
Q7. How long does product preparation usually take?
Standard samples are usually sent within 7 days. Custom projects need evaluation, software adjustment, and planning. In many cases, custom work takes about 3 to 5 weeks.
Q8. How do you usually ship the goods?
Courier delivery is often the most practical choice. FedEx, DHL, or UPS usually takes about 7 days door to door. Air freight is also possible, while sea freight usually takes around one month or more.
Need Help Choosing the Right Model?
If you are comparing different options, please feel free to get in touch with us. We are glad to discuss your project and help with model selection.
Related Thermostat Models
For more details, please click here directly: Wi-Fi Thermostats | Modbus Thermostats | BACnet Thermostats
Final Note
In FCU projects, steady room control and simple daily management are both important. HTW-WF01-FC-MKN helps manage fan coil operation, valve output, and BMS communication. This supports stable running, lower waste, and easier facility management over time.
