Quick Summary
HTW-WF11-FC-4W tuya thermostat is designed for indoor fan coil units (FCU). It controls 3-speed fans and 4-pipe on/off valves for heating and cooling. Wi-Fi allows app and voice control, giving flexible management. Group control supports multiple units simultaneously. Programming functions enable scheduled operation. Keylock prevents accidental changes, keeping settings stable.
This page explains the thermostat’s system role, control logic, technical parameters, typical issues, and project customisation options. One can quickly check suitability, understand key functions, and plan deployment. Main technical details and wiring are included.
Key Functional Highlights
(01) 3-Speed Fan Control
Allows precise airflow adjustment for comfort. Reduces energy use. Works with heating and cooling. Ensures stable operation and low noise in occupied spaces.
(02) 4-Pipe On/Off Valve Control
Manages independent heating and cooling circuits. Simplifies piping and installation. Reduces valve errors and saves time. Supports smooth switching between hot and cold water.
(03) Wi-Fi & Group Control
Remote monitoring via app or voice. Group control manages multiple units at once. Useful for hotels, offices, and apartments. Improves operational efficiency and reduces manual checks.
(04) Programming & Keylock
Schedules temperature changes automatically. Keylock prevents tampering. Keeps system reliable. Supports energy saving and avoids user mistakes. Programming can match daily or weekly routines.
(05) Easy Installation Support
Compatible with EU round box or standard 86x86mm box. Clear wiring diagram simplifies deployment. Helps engineers and technicians avoid errors.
Display
Specifications
| Parameter | Value |
|---|---|
| Power Supply | 95~240Vac, 50/60Hz |
| Current Load | Fan Relay 5A; Valve Relay 5A |
| Built-in Sensor | NTC3950, 10K |
| Temperature Accuracy | ±0.5°C |
| Set-Point Range | 5~35°C |
| Protection Class | IP20 |
| Warranty | 2 Year |
| Installation Box | EU round box or Standard 86x86mm Box |
Wiring
Guide
| 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 = 4W, it stands for a 3-speed fan, 4-pipe system with on/off valve control and Wi-Fi. Most sub-models are ready-made. Kindly contact us to confirm availability. | |
Project Fit & Customization
HTW-WF11-FC-4W is not suitable for standalone BMS integration or systems requiring direct modulating valve control. It works best in Wi-Fi-enabled 4-pipe FCUs. One should verify fan and valve compatibility before deployment.
Despite these limits, ODM functions such as firmware changes, custom scheduling, additional sensor inputs, or alternate power options can be discussed.
OEM customisation is supported, including logo printing, colour options, and labelling. Physical design can be modified for branding. Installation aids, such as extra screws or guides, can be supplied. These options help clients adapt the product to specific building designs or visual requirements.
Frequently Asked Questions
1. Which FCU systems are compatible?
This FCU thermostat supports 3-speed fan, 4-pipe on/off FCUs. Best for Wi-Fi-controlled heating and cooling systems. For the 2-pipe tuya model, please refer to (HTW-WF11-FC-2W).
2. Can it integrate with BMS?
This Tuya thermostat supports Wi-Fi communication. Multiple units can work together in a group. However, it does not suitable for any building management system that requires Modbus, BACnet, etc.
3. How is installation done?
EU round box or 86x86mm box. Wiring diagram included. Simplifies connection and reduces errors. Works for most standard FCU setups.
4. Minimum order and samples?
Samples are available. Typical MOQ is 300 units. Smaller batches may be arranged. Please get in touch with us for flexible order options.
5. How to place an order?
Please confirm requirements with us before we issue proforma invoices. Payment via TT, PayPal, Visa. Terms support EXW, FOB, DAP and more.
6. How is it shipped?
Courier delivery takes 7 days. Air shipment also 7 days. Sea shipment takes 1+ month, depending on location and customs.
