Quick Summary
HTW-WF06-FC-4EW is a wifi thermostat with sensor designed for 4 pipe fan coil systems. It controls a 3-speed fan and two motorised valves. It supports heating and cooling operation under standard relay logic. External sensor input improves temperature detection flexibility.
This page explains how this wifi thermostat with sensor works in real FCU projects. It covers control logic, wiring reference, and technical parameters. It also explains model selection and installation concerns. OEM and ODM options may be discussed for engineering evaluation.
Key Functional Highlights
(This section introduces the main control functions and their engineering value in FCU systems.)
(01) 4 Pipe System Control Logic
This wifi thermostat with sensor is structured for 4 pipe fan coil systems. It coordinates fan and valve operation. This reduces misoperation risk during seasonal switching and simplifies commissioning.
(02) External Sensor Support
External sensor input allows flexible temperature detection. It improves accuracy when wall position is not ideal. This supports stable system performance in real installations.
(03) Independent Relay Outputs
Separate fan and valve relays provide clear wiring layout. This improves electrical isolation. It also reduces maintenance confusion during long-term operation.
(04) Wifi Remote Supervision
Wifi allows remote monitoring and adjustment through mobile applications. It reduces on-site visits. It also supports basic central visibility without complex BMS systems. (If only need wifi, click here)
Product Design and Display
(This section shows the thermostat appearance, screen interface, and installation dimensions of this model.)
The thermostat appearance and interface layout to fully grasp the display effect and performance of the thermostat in real-world use
Technical Specifications
(This section lists the key technical parameters relevant to this thermostat model.)
| Parameter | Value |
|---|---|
| Power Supply | 110–230 VAC |
| Frequency | 50/60Hz |
| Accuracy | ±0.5°C |
| Fan Relay Load | 5A |
| Valve Relay Load | 3A |
| Setpoint Range | 5–35°C |
| Installation | EU or standard box |
| Protection Class | IP20 |
Wiring Diagram
(This section provides the wiring diagram for this thermostat in FCU control systems.)
Clear wiring references to help you complete the installation quickly and correctly
Model Code Guide
(This section explains what configuration the model code refers to.)
| Fan coil series | xx stands for |
|---|---|
| 2/4 | 2 pipe or 4 pipe system |
| W | Wi-Fi |
| N | Modbus |
| K/E | Keycard or external sensor |
| 24 | 24V supply or output |
| Example HTW-WF06-FC-xx | If xx = 4EW, it stands for 2 pipe, Sensor, Wifi |
Project Fit & Customization
(This section describes project suitability, system limitations, and available customization options.)
This wifi thermostat with sensor is not suitable for 2 pipe systems. It does not support Modbus or BACnet communication. It is also not designed for outdoor or high protection environments.
Despite these limitations mentioned above, ODM customization can be discussed. Sensor logic, control delay, or display behaviour may be adjusted. Our engineers review feasibility before confirming solutions.
OEM customization is also supported. Logo printing, label design, and packaging can be adjusted. These options help match different project branding requirements.
Certifications 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 be used in a 2 pipe system?
No. This model is designed for 4 pipe systems only. A different model is required for 2 pipe control.
Q2. Does the external sensor replace the internal sensor?
The external sensor can supplement or override internal sensing. This depends on configuration and installation requirements.
Q3. Is it compatible with all motorized valves?
It supports standard on/off motorized valves. Ensure relay load matches system requirements.
Q4. How to choose the correct model?
Check system type, pipe configuration, and sensor needs. Confirm communication requirements before selection.
Q5. What is the MOQ and are samples available?
Samples are supported. Standard MOQ is 300 units. Smaller trial quantities such as 100 units may be discussed.
Q6. How can we place an order?
Please contact us to confirm requirements. We provide PI. Payment supports TT, PayPal, Visa, with EXW, FOB, DAP terms.
Q7. How long is the lead time?
Samples ship within 7 days. Custom orders take 3–5 weeks. Batch orders around 300 units need about one month.
Q8. How are products shipped?
Express delivery takes about 7 days. Air freight is similar. Sea shipping usually takes around one month.
Need Support?
If you are selecting a wifi thermostat with sensor for a project, please contact us. We can help confirm wiring and application suitability.
