Quick Summary
The HTW-FC09-FVMN-24ZB Zigbee Thermostat is designed for fan coil unit control. It regulates 3-speed fan motors, EC fans, and 2-pipe modulating valves. The controller works in typical heating or cooling FCU systems. A built-in transformer provides a stable 24V output for valve control.
This page explains how the Zigbee Thermostat works in a typical FCU control environment. It describes the control logic, operational meaning of key functions, and technical parameters. Typical engineering questions are also addressed for practical reference. Possible project customisation and deployment considerations are also explained.
Zigbee Thermostat Functional Highlights
(This section introduces the main control functions and their engineering value in the specific HVAC system.)
(01) 3-speed Fan and EC Fan
This controller supports both traditional three-speed fan motors and EC fans. One thermostat type can therefore serve multiple fan coil configurations. This simplifies maintenance planning and reduces spare controller types in large installations.
(02) Stable 2-pipe temperature regulation
The thermostat manages two-pipe heating or cooling circuits using a 0–10V modulating valve signal. Smooth valve adjustment helps stabilise room temperature. This avoids frequent valve switching and reduces mechanical stress in daily operation.
(03) Integrated transformer simplifies installation
A built-in transformer supplies a stable 24V output for the control valve. No separate transformer is required during installation. This reduces wiring complexity and helps installers complete FCU commissioning more efficiently.
(04) Tuya App Control (via Zigbee)
The thermostat supports WiFi remote control through the Tuya mobile application. Connection is established through Zigbee communication with a compatible gateway. Facility operators can monitor room conditions and adjust temperature settings remotely.
If this Zigbee feature is not required, one may refer to another model (click → HTW-FC09-FVMN-24) instead.
(05) RS485 Modbus communication
The thermostat supports RS485 Modbus communication for building control integration. A central system can read temperature and operating status remotely. This helps facility teams monitor multiple rooms and manage HVAC operations more efficiently.
(06) Programmable temperature scheduling
Programmable operation allows different temperature settings during occupied and unoccupied periods. This helps balance comfort and energy efficiency. Scheduled operation also reduces unnecessary system running time in many buildings.
Zigbee Thermostat Display
(This section shows the thermostat appearance, screen interface, or installation dimensions of this specific model.)
Zigbee Thermostat Specifications
(This section lists the key technical parameters relevant to this thermostat model.)
| Parameter | Value |
|---|---|
| Power Supply | 95~240Vac, 50/60Hz |
| Fan Relay Load | 5A |
| Built-in Sensor | NTC3950, 10K |
| Temperature Accuracy | ±0.5°C |
| Set-Point Range | 5–35°C |
| Installation | Standard 86×86 mm box |
| Warranty | 2 Year |
Zigbee Thermostat Wiring Diagram
(This section provides the wiring diagram for this thermostat in the relevant HVAC control system.)
Project Fit & Customisation
(This section describes project suitability, system limitations, and available customisation options.)
This thermostat is not suitable for projects requiring direct BMS communication through Modbus or BACnet protocols. It also does not support direct Ethernet networking or industrial automation integration. Projects needing complex building management integration should verify compatibility during early system design.
Despite these limitations mentioned above, ODM functional customisation can be discussed. Communication options, sensor logic, or control strategies may be adjusted for specific projects. Integration options, such as another protocol BACnet, may also be evaluated on a case-by-case basis.
OEM customisation is also available for branding or project identity needs. This may include logo printing, panel colour adjustment, and customised product labels. Packaging design and documentation can also be adapted for distributor or project requirements.
Certifications
(This thermostat complies with European market requirements and is supported by certifications such as CE, RoHS, LVD test reports, EMC test reports, etc)
Exhibition Moments
(Our team regularly participates in international HVAC exhibitions such as Febrava in Brazil, The Big 5 in Dubai, and ISK-SODEX in Turkey, etc.)
Frequently Asked Questions
Q1. Can this thermostat control both EC fans and standard fan motors?
Yes. The controller supports EC fan signals and traditional three-speed fan motors. This allows one controller model across different fan coil designs.
Q2. How does the thermostat regulate room temperature?
Temperature is controlled by adjusting the 0–10V valve signal. The valve opening changes according to the difference between the room temperature and the set-point.
Q3. Does this thermostat connect directly to the Tuya platform?
The thermostat communicates through Zigbee. A Zigbee gateway connects the device to the Tuya cloud platform.
Q4. Can the thermostat support additional sensors?
External sensor options may be discussed depending on the project design. Remote sensing may help improve temperature measurement accuracy.
Q5. What is the minimum order quantity, and can I get samples?
Samples are available for testing. The usual MOQ is about 300 units. Smaller trial orders, such as 100 units, may be discussed.
Q6. How can I place an order and arrange shipment?
Please contact us to confirm the configuration and quantity. We will provide a proforma invoice. Payment supports TT, PayPal, or Visa, with EXW, FOB, DAP or other terms.
Q7. How long does it take to prepare the products?
Standard samples are normally shipped within seven days. Custom models require programme adjustments and testing, which takes longer: 3~5 weeks. Bulk orders of around 300 units usually need about one month.
Q8. What shipping options are available?
Courier delivery, such as DHL, UPS, or FedEx, is recommended and normally takes about seven days. Air freight also takes around one week. Sea freight may take about one month.
Need Help Choosing the Right Model?
If you are planning a fan coil project and need technical advice, please contact us directly~ Our engineers can help confirm suitable thermostat configurations.
Related Thermostat Models
For more details, please click here directly: Wi-Fi Thermostats | Modbus Thermostats | BACnet Thermostats
Final Note
HVAC fan coil systems require stable temperature control and balanced airflow management. The HTW-FC09-FVMN-24 Zigbee Thermostat manages fan speed, valve modulation, and remote connectivity. This supports stable room conditions while helping facility teams monitor and manage building comfort efficiently.
