Quick Summary
HTW-WF11-EC is an EC fan controller designed for fan coil systems with EC fans. It controls a 0–10V EC fan and on/off valves. It supports both 2-pipe and 4-pipe systems through settings and wiring. This room thermostat works in both cooling and heating modes with stable changeover.
This page explains how the room thermostat works in real FCU projects. It covers control logic, wiring, and key parameters. It also includes common questions and practical selection advice. Custom options can be discussed based on project needs.
Key Functional Highlights
(This section introduces the main control functions and their engineering value of this EC fan controller in fan coil HVAC systems.)
(01) 0–10V EC fan control
This EC fan controller adjusts fan speed through a 0–10V signal. It allows smooth airflow control based on room demand. This improves comfort and reduces energy use. It also avoids frequent on/off cycling, helping extend fan life.
(02) 2/4-pipe on/off valve control
This room thermostat supports both 2-pipe and 4-pipe systems. The mode is set by wiring and advanced settings. This allows flexible use across different projects. It also helps keep system logic clear during installation.
(03) Keycard for the hotel
This EC fan controller supports keycard input for hotel use. The system can reduce operations when no guests are present. This helps save energy in daily use. It also reduces unnecessary running and lowers maintenance needs.
(04) External sensor support
This room thermostat can work with an external sensor when needed. This helps measure temperature more accurately in some rooms. It is useful when the thermostat position is not ideal. It improves control stability in real projects.
(05) Heating/Cooling manual or auto change
This EC fan controller supports both manual and automatic mode change. It can switch between heating and cooling based on system design. This reduces user intervention during seasonal changes. It also helps keep operations smooth.
If one also requires a communication to work with the building management system, one may refer to this Modbus version instead (please click → HTW-WF11-ECNS).
Product Design and Display
(This section shows the thermostat appearance, screen interface, or installation dimensions of this specific model.)
Technical Specifications
(This section lists the key technical parameters relevant to this thermostat model.)
| Parameter | Value |
|---|---|
| Power Supply | 95~240Vac, 50/60Hz |
| Current Load | EC Fan DC 0–10V; Valve Relay 5A |
| Built-in Sensor | NTC3950, 10K |
| Temperature Accuracy | ±0.5°C |
| Set-Point Range | 5~35°C |
| Warranty | 2 Year |
| Installation | Flush-mounted |
| Mounting Box | EU round box or Standard 86×86mm |
Wiring Diagram
(This section provides the wiring diagram for this thermostat in the relevant HVAC 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 & Customisation
(This section describes project suitability, system limitations, and available customisation options.)
This EC fan controller is not suitable for AC fan motors (3-speed fan). It does not support relay fan outputs. It is also not ideal for projects needing full BMS integration without communication options.
Despite these limits, function upgrades can be discussed. Wi-Fi or Modbus may be added based on project needs. Control logic or sensor setup can also be adjusted after evaluation.
We also support OEM requests for branding and appearance. Logo printing and label design are available. Colour changes may also be discussed for project matching.
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 work with all EC fans?
It works with most EC fans that accept 0–10V input. Please confirm signal compatibility before use. This helps avoid control issues during installation.
Q2: Does it support BMS communication?
This version does not include communication by default. It is mainly for standalone control. Modbus or other options may be discussed if needed.
Q3: When should I use an external sensor?
It is useful when wall placement affects the temperature reading. For example, near windows or heat sources. It helps improve control accuracy.
Q4: How to choose between 2-pipe and 4-pipe models?
This model supports both options through wiring and settings. The system design usually decides the choice. It helps reduce model selection risk.
Q5: What is the MOQ, and can we get samples?
We support sample orders for testing. Standard MOQ is 300 units. Smaller quantities like 100 units can be discussed.
Q6: How do we place an order?
Please feel free to get in touch with us with your requirements. We will provide a PI after confirmation. Payment supports TT, PayPal, and Visa.
Q7: How long does it take to prepare?
Standard samples are ready within 7 days. Custom orders need evaluation and programming changes. Bulk orders like 300 units usually take about one month.
Q8: How will the goods be shipped?
Courier delivery is often the fastest option. It usually takes around 7 days door-to-door. Air or sea shipping can also be arranged based on needs.
Need Help Choosing the Right Model?
If you are not sure which model fits your project, please feel free to get in touch with us. We are happy to help review 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 HVAC projects, stable airflow and clear temperature response are important. This model HTW-WF11-EC works as a room thermostat to control EC fan speed and valves. It helps improve system stability and supports easier daily operation and maintenance.
