Quick Summary
The HTW-EB-FC-FC-2 Smart Thermostat is designed for 2-pipe fan coil systems where heating and cooling share one water circuit. It controls a 3-speed fan and two motorised valves using on/off logic. The Smart Thermostat provides stable temperature control with a clear interface and reliable operation.
This page explains how the Smart Thermostat works in FCU systems and its practical role in daily control. It includes wiring reference, technical specifications, and model code guidance, followed by project fit analysis, customisation options, and common questions with clear answers.
Key Features
(This section explains the core control functions and their practical value.)
(01) Stable temperature control
The Smart Thermostat maintains consistent indoor temperature through precise sensing and control. This improves comfort and reduces frequent system adjustments during daily operation.
(02) 2-pipe system compatibility
The Smart Thermostat is designed for systems with a shared heating and cooling water loop. This simplifies system design and ensures stable control in typical FCU applications. If you need thermostat for 4-pipe system, you can refer to this link: HTW-EB-FC-4.
(03) On/off valve control
The Smart Thermostat uses standard on/off control for motorised valves. This matches common installation practice and helps ensure reliable performance in long-term operation.
(04) Clear display with backlight
The Smart Thermostat uses a negative black backlight display for easy reading. This supports quick operation and improves user experience in different lighting conditions.
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 | 110~240VAC |
| 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-WF11-FC-xx: if xx = 2, it stands for a 2-pipe system with on/off valve control. 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 Smart Thermostat is suitable for standard FCU projects where standalone control is required. It is not suitable for systems needing remote communication such as Modbus or BACnet integration.
Despite these limits mentioned above, ODM customisation can be discussed based on project requirements. Control logic, display interface, or additional functions can be adjusted after evaluation.
OEM customisation is also supported. Options include logo printing, colour customisation, and label design. This helps meet project branding and installation consistency needs.
Certificates and Compliance
Frequently Asked Questions
Q1. Is this thermostat suitable for 2-pipe systems?
Yes, it is designed for 2-pipe FCU systems with shared heating and cooling circuits.
Q2. Does it support remote control?
No, this Smart Thermostat works as a standalone device without WiFi or remote communication.
Q3. What type of valves does it support?
It supports on/off motorised valves commonly used in fan coil systems.
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 provide 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 other versions, you can contact us for selection support. Or you can refer to below links:
The Smart Thermostat is suitable for standard 2-pipe FCU systems. It supports stable control. It helps maintain consistent temperature and simple daily operation. 【More models: fan coil thermostat】
