Quick Summary
The HTW-WF02-FC-2W Wifi Thermostat is designed for 2-pipe fan coil systems with heating and cooling changeover. It controls a 3-speed fan and two on/off motorised valves for heat and cool operation. The thermostat supports WiFi connection for remote access through mobile applications, providing flexible control and improved daily operation.
This page explains how the Wifi Thermostat works in FCU systems and why its control logic suits modern room applications. It also includes wiring reference, key parameters, and model selection guidance, followed by project considerations, customisation options, and common questions with clear answers.
Key Features
(This section explains the core control functions and their practical value.)
(01) 2-pipe system control
The Wifi Thermostat supports standard 2-pipe fan coil systems with heating and cooling changeover. This aligns with common HVAC layouts and ensures stable temperature control in daily operation. Another model HTW-WF02-FC-4W can support 4-pipe system with WiFi function.
(02) WiFi remote control
The Wifi Thermostat allows users to adjust settings through a mobile application. This improves convenience and reduces the need for manual adjustments, especially in multi-room projects.
(03) 3-speed fan control
Three fan speeds provide flexible airflow adjustment. This helps maintain consistent comfort while balancing noise and performance across different room conditions.
(04) On/off valve control
The thermostat controls on/off motorised valves for heating and cooling. This matches standard FCU design and ensures simple and reliable system operation.
Product Design and Display
(This section shows the product’s dimensions and the interface layout.)
Technical Specifications
(This section lists the key parameters for reference and project confirmation.)
| Power Supply | 100~250VAC |
| Frequency | 50/60Hz |
| Fan Relay Load | 5A (3A inductive) |
| Valve Relay Load | 3A (1A inductive) |
| Accuracy | ±0.5°C or ±1°F |
| Sensor | NTC3950, 10K |
| Setpoint Range | 5~35°C |
| Installation | EU or standard electric box |
Wiring Diagram
(This section provides the wiring reference diagram for correct installation.)
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 |
| Example | HTW-WF02-FC-xx: if xx = 2W, it stands for a 2-pipe system with on/off valve control and WiFi 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.)
The Wifi Thermostat is suitable for FCU systems requiring remote control through mobile applications. It is not suitable for projects needing Modbus or BACnet integration with building management systems.
Despite these limits mentioned above, ODM customisation can be discussed based on project requirements. Communication protocols or control logic may be adjusted where feasible depending on system compatibility and project scale.
OEM customisation is also supported. Options include logo printing, colour customisation, and label design. These help align the thermostat with project branding and installation needs.
Certificates and Compliance
Frequently Asked Questions
Q1. Can this thermostat be used in 4-pipe systems?
No, this model is designed for 2-pipe systems with heating and cooling changeover.
Q2. Does it support remote control?
Yes, the Wifi Thermostat supports mobile app control through WiFi connection.
Q3. Can it be connected to a BMS system?
No, this model uses WiFi and does not support Modbus or BACnet communication.
Q4. Do you support samples and what is the MOQ?
Yes, samples are available. MOQ is usually 300 units, but smaller quantities can be discussed.
Q5. How can we place an order?
Please contact us to confirm requirements. We will issue a PI. Payment supports TT, PayPal, Visa. Terms include EXW, FOB, DAP.
Q6. How will the goods be shipped?
Courier delivery takes about 7 days. Air freight is similar. Sea shipping usually takes over one month depending on destination.
Related Thermostat Models
For Modbus-based control, you may refer to /products/htw-wf02-fc-2n, or contact us for project selection support.
You also can refer to below links:
The Wifi Thermostat suits 2-pipe FCU systems requiring remote access and simple operation. It supports stable room control. It helps improve efficiency in daily use and multi-room projects. 【More models: Fan coil thermostat】
