Quick Summary
HTW-WF06-FC-2N is a Modbus thermostat designed for 2-pipe fan coil systems with on/off valve control. It manages cooling and heating operation and controls a multi-speed fan through relay output. RS485 communication enables integration with building control systems for central monitoring.
This page explains how this Modbus thermostat works in FCU projects. It covers control logic, wiring reference, technical parameters, and model code meaning. Project suitability and customization options are also included for engineering confirmation.
Key Functional Highlights
(This section explains the core control functions and their practical value.)
(01) Programmable Temperature Control
This Modbus thermostat supports time-based temperature control. It helps reduce energy use during unoccupied periods. It also improves predictability in commercial FCU projects.
(02) Modbus RS485 Communication
RS485 communication allows connection to BMS systems. It supports central monitoring and remote adjustment. This enables unified control across multiple rooms.(If you looking for standalone version, kindly click to here)
(03) Energy Saving Mode
Energy saving mode reduces excessive heating or cooling demand. It helps lower energy consumption in hotels, offices, and apartments with long operation hours.
(04) Adjustable Standby Brightness
Display brightness can be adjusted in standby mode. This reduces light disturbance at night. It is suitable for hospitality environments.
Product Design and Display
(This section shows the thermostat appearance and 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 project confirmation.)
| Parameter | Value |
|---|---|
| Power Supply | 110VAC (+/-10%) or 220VAC (+10%/-15%) |
| Frequency | 50/60Hz |
| Accuracy | ±0.5°C or ±1°F |
| Fan Relay Load | 5A (3A inductive) |
| Valve Relay Load | 3A (1A inductive) |
| Setpoint Range | 5–35°C |
| Protection Class | IP20 |
| Storage Temperature | -5–45°C |
Wiring Diagram
(This section provides the 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 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 | Keycard or external sensor |
| Example HTW-WF06-FC-xx | If xx = 2N, it stands for 3-speed fan, 2-pipe system with on/off valve control and Modbus communication. |
Project Fit & Customization
(This section describes application limits and customization options.)
This Modbus thermostat is suitable for indoor 2-pipe fan coil systems with on/off valves. It is not suitable for modulating valve systems or high humidity environments. It does not support BACnet communication or high-power switching applications.
Despite these limits mentioned above, ODM customization can be discussed. Communication settings, control logic, or interface changes may be adjusted according to project requirements.
OEM customization is also supported. Logo printing, panel colour, packaging, and documentation can be modified. This helps match project branding needs.
Certifications and Compliance
(This thermostat complies with standard HVAC certification requirements.)
Exhibition Moments
(Product application and participation in HVAC exhibitions.)
Frequently Asked Questions
Can this thermostat integrate with a building management system?
Yes. It supports RS485 Modbus communication for BMS integration.
Is it suitable for a 4-pipe system?
No. This model is designed for 2-pipe systems only.
What type of fan does it support?
It supports standard multi-speed fan control through relay outputs.
What is the minimum order quantity and are samples available?
Samples are supported. Standard MOQ is around 300 units. Smaller quantities may be discussed.
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.
How is the product shipped?
Express delivery takes about 7 days. Air freight is similar. Sea shipping usually takes over one month.
Need Support?
If you need help selecting a Modbus thermostat for your project, please contact us. We can assist with wiring confirmation and system integration.
