Quick Summary
The HTW-WF08-MKE-LoRa modulating thermostat is designed for 2-pipe fan coil systems. It controls a 3-speed fan and a 0–10V modulating valve. It supports both cooling and heating operations. LoRa communication allows stable signal transmission in large buildings without complex wiring.
This page explains how the modulating thermostat works in practical FCU systems. It also covers control logic, key parameters, and wiring reference. Typical project questions are addressed with clear answers. Options for project customisation and communication integration are also outlined.
Key Functional Highlights
(This section introduces the main control functions and their engineering value in the specific HVAC system.)
(01) 3-speed fan control
Three fan speeds allow flexible airflow adjustment in daily operation. This helps balance comfort and noise in different room conditions. It also supports stable system response, making the modulating thermostat suitable for varied occupancy patterns.
(02) 2-pipe (0–10V modulating valve control)
The modulating thermostat uses a 0–10V signal to control water flow smoothly. This improves temperature stability compared with on/off control. It helps reduce energy waste and keeps system operation more efficient in long-term FCU use.
If one is looking for the on/off valve control, one may consider this model (please click → HTW-WF08-2KE-LoRa).
(03) Keycard
The keycard function detects room occupancy in hotel or serviced apartment projects. When the card is removed, the system can reduce output or stop operation. This helps lower unnecessary energy use and improves overall project efficiency.
(04) External sensor function
An external sensor provides more accurate temperature measurement in complex spaces. It is useful in larger rooms or areas with uneven airflow. This improves control precision and helps the modulating thermostat maintain stable indoor conditions.
(05) LoRa communication
LoRa communication enables long-distance data transmission with low power consumption. It is suitable for buildings where wiring is difficult or costly. This improves deployment flexibility and supports stable communication between devices and control systems.
Product Design and Display
(This section shows the thermostat appearance, screen interface, or installation dimensions of this specific model.)
Technical Specifications
(This section lists the key technical parameters relevant to this thermostat model.)
| Parameter | Value |
|---|---|
| Power Supply | 110~240Vac, 50/60Hz |
| Fan Relay Load | 5A |
| Sensor Type | NTC3950, 10K |
| Temperature Accuracy | ±0.5°C |
| Set-Point Range | 5~35°C |
| Communication | LoRa |
| Installation | 86x86mm box or EU round box |
| Warranty | 2 Years |
Wiring Diagram
(This section provides the wiring diagram for this thermostat in the relevant HVAC control system.)
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 = 2EN, it stands for a 3-speed fan, 2-pipe system with on/off valve control, external sensor function, and Modbus communication. Most sub-models are ready-made. Kindly contact us to confirm availability. | |
Project Fit & Customisation
(This section describes project suitability, system limitations, and available customisation options.)
This modulating thermostat is not suitable for 4-pipe systems or multi-stage control. It does not support BACnet or Modbus in the standard version. It may not fit projects requiring wired BMS integration or advanced logic control.
Despite these limitations mentioned above, ODM customisation can be discussed based on project needs. Communication options such as Modbus or BACnet can be added. Control logic and interface functions may also be adjusted for specific project requirements.
OEM customisation is also supported for branding and appearance needs. This includes logo printing, label design, and colour options. Packaging and minor interface changes can also be arranged for project consistency.
Certificates and Compliance
(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 modulating thermostat be used with BMS systems?
This model uses LoRa communication by default. It is not directly compatible with wired BMS systems. However, gateway solutions or customised versions may support integration.
Q2: How does the external sensor improve control?
The external sensor measures temperature in a more representative location. This helps avoid errors caused by airflow or installation position. It improves control stability in larger or uneven spaces.
Q3: Is LoRa communication stable in large buildings?
LoRa is designed for long-distance communication with low power use. It works well in buildings where wiring is difficult. Signal stability depends on layout and gateway setup.
Q4: How to choose between modulating and on/off thermostats?
On/off types are simpler, while a modulating thermostat provides smoother temperature control and better comfort. It reduces frequent valve switching and saves energy.
Q5: What is the MOQ, and can we get samples?
We support sample orders for testing and evaluation. The standard MOQ is 300 units. Smaller trial quantities such as 100 units can be discussed.
Q6: How to place an order and arrange shipment?
Please contact us to confirm your requirements first. We will provide a PI for confirmation. Payment supports TT, PayPal, and Visa, with EXW, FOB, or DAP terms.
Q7: How long does it take to prepare the products?
Non-customised samples are usually ready within 7 days. Customised orders require evaluation and programming, usually 3–5 weeks. Bulk orders such as 300 units typically need about one month.
Q8: What shipping methods are available?
Express delivery like FedEx or DHL takes around 7 days. Air freight also takes about 7 days. Sea freight usually takes around one month, depending on the destination.
Need Help Choosing the Right Model?
If you are unsure which modulating thermostat fits your project, please contact us. We can help review your system and suggest a suitable solution.
Related Thermostat Models
For more details, please click here directly: Wi-Fi Thermostats | Modbus Thermostats | BACnet Thermostats
Final Note
FCU projects often require stable temperature control and flexible system deployment. This modulating thermostat manages fan operation, valve control, and wireless communication within the system. It helps improve control stability, reduces wiring complexity, and supports efficient facility management.
