Quick Summary
HTW-31-F17-2 is a Room Thermostat for Hvac designed for 2-pipe fan coil systems. It controls a 3-speed or single-speed fan and an on/off valve. The thermostat supports cooling, heating, and fan-only modes, with default cooling logic. It operates on 24VAC or 100–240VAC power supply and is suitable for residential or light commercial HVAC installations.
This page explains the control logic and practical function of the Room Thermostat for Hvac, together with wiring reference, technical parameters, installation notes, project limits, and typical deployment questions.
Key Functional Highlights
(This section explains the core control functions and their practical value.)
(01) 2-Pipe Fan Coil Control Logic
The Room Thermostat for Hvac is designed for standard 2-pipe systems. It switches the valve and fan according to temperature difference, ensuring stable seasonal operation without complex configuration.
(02) 3-Speed / Single-Speed Fan Selection
Installers can select 3-speed or one-speed fan logic during setup. This flexibility allows the Room Thermostat for Hvac to match common FCU motors in renovation or new-build projects.
(03) Cooling / Heating / Fan Mode Adjustment
Users can manually select cooling, heating, or fan-only mode. Default cooling logic simplifies commissioning in warm regions and reduces setup errors during bulk installation.
(04) Dual Power Compatibility
Supporting 24VAC and 100–240VAC makes this Room Thermostat for Hvac suitable for both low-voltage control panels and direct mains projects, reducing SKU complexity for contractors.
Display
(This section shows the product’s dimensions and the interface layout.)
Specifications
(This section lists the key parameters for reference and project confirmation.)
| Parameter | Value |
|---|---|
| Power Supply | 24VAC / 100–240VAC |
| Frequency | 50/60Hz |
| Temperature Accuracy | ±1°C (0.5°C step) |
| Setpoint Range | 10–30°C |
| Power Consumption | 1.5A |
| Ambient Temperature | 0–50°C |
| Protection Class | IP30 |
Wiring
(This section provides the wiring reference diagram for correct installation.)
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 |
| W | Wi-Fi |
| N | N for Modbus |
| K/E | K for Keycard; E for External sensor |
| Example HTW-31-F17-xx | If xx = 2K, it stands for a 3-speed fan, 2-pipe system with on/off valve control, Keycard. 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.)
This Room Thermostat for Hvac is designed for indoor 2-pipe fan coil systems only. It is not suitable for 4-pipe systems, variable refrigerant flow systems, or projects requiring BMS communication. The protection class is IP30, so it is not intended for humid or outdoor environments.
Despite these limits mentioned above, function adjustments can be discussed for project requirements. Control logic, temperature range, display behaviour, or power configuration can be adapted under ODM cooperation after technical evaluation.
OEM customisation is also supported. This includes logo printing, panel colour adjustment, packaging design, and private labelling. Details can be confirmed according to order volume and project schedule.
Certifications
Exhibition Moments
Frequently Asked Questions
Q1. Is this thermostat suitable for 4-pipe systems?
No. This model is designed for 2-pipe fan coil systems with on/off valve control only.
Q2. Can it control both 3-speed and single-speed fans?
Yes. The Room Thermostat for Hvac supports selectable 3-speed or single-speed fan configuration during installation.
Q3. Does it support BMS integration?
No. This model is a standalone Room Thermostat for Hvac without Modbus or BACnet communication.
Q4. What is the MOQ and can I order samples?
Samples are supported. Standard MOQ is 300 pieces, but smaller trial quantities can be discussed for first cooperation.
Q5. How can I place an order?
Please contact us with your requirements. After confirmation, we issue a proforma invoice. Payment supports TT, PayPal, Visa. Terms include EXW, FOB, DAP.
Q6. How will the goods be shipped?
Courier door-to-door is recommended, usually around 7 days. Air freight is similar. Sea freight takes about one month, depending on destination.
For residential and light commercial FCU projects, a Room Thermostat for Hvac should be selected by pipe system, fan type, valve output, power supply, and installation environment. The HTW-31-F17-2 is suitable for 2-pipe fan coil systems that need simple heating, cooling, and fan-only control with 3-speed or single-speed fan options. For OEM buyers, contractors, and distributors, confirming wiring, voltage, control logic, and project quantity before ordering will help reduce installation risks and after-sales issues.
Need Project Support?
If you are selecting a Room Thermostat for Hvac for a residential or light commercial project, feel free to contact us. We can assist with model confirmation and application matching.
