Quick Summary
HTW-WF06-FC-4N is a Modbus fan coil thermostat designed for 4-pipe fan coil systems in commercial and residential buildings. It manages cooling and heating changeover, controls multi-speed fan operation, and drives on/off valves. RS485 communication allows integration into building management systems.
This page explains how this Modbus fan coil thermostat works in practical projects. It covers control logic, wiring reference, technical parameters, and model code meaning. Project limits and customization options are also included for engineering confirmation.
Key Functional Highlights
(The core control functions and their practical value.)
(01) Programmable Operation
This Modbus fan coil thermostat supports programmable schedules. It adjusts temperature automatically based on occupancy. This improves energy planning in hotels and office projects.
(02) Modbus Communication Integration
RS485 Modbus communication allows connection to BMS systems. It supports central monitoring and parameter adjustment. This improves management efficiency across multiple rooms.(2 pipe system with Modbus click here)
(03) Energy Saving Mode Logic
Energy saving mode reduces unnecessary heating or cooling demand. It helps lower operating costs while maintaining safe system conditions.
(04) 4-Pipe Heating and Cooling Control
The 4-pipe design allows independent control of cooling and heating valves. This prevents incorrect operation and ensures stable switching logic.
Product Design and Display
(The product’s dimensions and the interface layout.)
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 parameters for reference and project confirmation.)
| Parameter | Value |
|---|---|
| Power Supply | 110(+/-10%)VAC or 220(+10%,-15%)VAC |
| Frequency | 50/60Hz |
| Accuracy | ±0.5°C or ±1°F |
| Current Load | Fan 5A (3A inductive); Valve 3A (1A inductive) |
| Setpoint Range | 5–35°C |
| Display Range | 5–99°C |
| Installation | EU or Standard Electric Box |
| Protection Class | IP20 |
Wiring Diagram
(Wiring reference diagram for correct installation.)
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 for 2-pipe; 4 for 4-pipe system |
| M | Modulating valve control |
| W | Wi-Fi |
| N/B | N for Modbus; B for BACnet |
| K/E | Keycard or external sensor |
| Example HTW-WF06-FC-xx | If xx = 4N, it means 4-pipe system with on/off valve control and Modbus communication. |
Project Fit & Customization
(where the product can be used, its limits, and OEM/ODM options.)
This Modbus fan coil thermostat is suitable for indoor 4-pipe FCU systems requiring independent cooling and heating control. It is not suitable for modulating valve systems unless specified as M version. It should not be used in high humidity or industrial environments.
Despite these limits mentioned above, ODM customization can be discussed. Communication protocol, parameter control, or interface logic may be adjusted based on project needs.
OEM customization is supported. Logo printing, panel colour, packaging, and labeling can be modified to match branding requirements.
Certifications and Compliance
Exhibition Moments
Frequently Asked Questions
Can this thermostat connect to a building management system?
Yes. It supports RS485 Modbus communication for BMS integration.
Is this model suitable for 2-pipe systems?
No. This model is designed for 4-pipe fan coil systems only.
What type of valves can it control?
It supports on/off motorised valves within rated relay limits.
What is the minimum order quantity and are samples available?
Samples are supported. Standard MOQ is 300 units. Smaller quantities may be discussed.
How can I place an order?
Please contact us to confirm requirements. We provide PI. Payment supports TT, PayPal, Visa with EXW, FOB, DAP terms.
How is shipment arranged?
Courier delivery takes about 7 days. Air freight is similar. Sea freight usually takes over one month.
Need Support?
If you are selecting a Modbus fan coil thermostat for a project, please contact us. We can assist with wiring and system matching.
