BHT-009 Smart Knob Thermostat User Guide
Brand: Beca
Model: BHT-009
Welcome
This guide provides information for the BHT-009 Smart Knob Thermostat, designed for water heating, boiler, and electric heating systems. Please confirm compatibility with your heating equipment before installation.
Important Safety Precautions:
- Ensure power is off before installation or maintenance.
- Strictly follow the wiring diagram.
- Use suitable fasteners for wall installation.
- Avoid pulling cables forcefully.
- Pre-bend hard plastic wires if necessary.
- Professional installation is recommended.
- Contact after-sales service for equipment failure; do not attempt self-repair.
- Keep this manual for future reference after installation.
In the Box
- Thermostat (1 pc)
- Screws (2 pcs)
- User Guide (1 pc)
- QC Passed Tag (1 pc)
- Floor Sensor (1 pc, Optional)
About Your Thermostats
The BHT-009 range is designed for controlling electric underfloor, water heating, or water/gas boiler systems. It is suitable for commercial, industrial, civil, and domestic properties.
Model Definition
- GA: Water heating, 5A
- GB: Electric floor heating, 16A
- GC: Water/Gas boiler, 5A
- P: Weekly Programmable
- W: Wi-Fi
- L: Backlight
- N: Modbus Communication
- S2: Both internal and external floor sensors
Example: BHT-009 GCLW
Features
Appearance
- Friendly LED display with LED matrix for simple, energy-saving visuals.
- Touch buttons for easy operation.
- Ultra-thin embedded panel (12.4mm visible thickness above wall).
- Frameless acrylic panel design for a simple and elegant look.
- Classic black/white color scheme for seamless integration.
- Compatible with standard 86mm square and 60mm European cassettes.
- Interlocking connectors for easy installation.
Functionality
- Rich options including Modbus, Wi-Fi, and keycard support.
- Precise temperature control with an accuracy of ±1°C.
- Power-off protection to safely save settings.
- 5+1+1 programmable mode with 6 daily time periods for energy saving and cost reduction.
- Supports local group/share creation for unlimited centralized control and multi-terminal control.
- Seamless integration with Tmall Genie, Amazon Echo, and Google Home for voice control.
Home Screen Quick Reference
The home screen displays key information:
- Weather: ☀️ (Weather)
- Room Temp.: ?️ (Room Temperature)
- Set Temp.: ⚙️ (Set Temperature)
- Underfloor Temp.: ?️ (Floor Temperature, if applicable)
- Period: ? (Current program period)
- Heating on: ? (Heating status indicator)
- Programmable / Manual Mode: ? (Indicates current operating mode)
- Lock: ? (Indicates if the thermostat is locked)
- Energy saving: ? (Indicates energy-saving mode)
- Wi-Fi: ? (Blinks when connected to Wi-Fi)
- Time: ⏰ (Current time)
- Week: ?️ (Current day of the week)
Technical Data
| Parameter | Specification |
|---|---|
| Power Supply | 95 ~ 240 VAC, 50~60Hz or 24V DC/AC, 50~60Hz |
| Current Load | 5A (Water heating, Water/Gas boiler), 16A (Electric heating) |
| Sensor | NTC3950, 10K |
| Accuracy | ±1°C |
| Set Temp. Range | 5-35°C |
| Room Temp. Range | 5-70°C |
| Display Temp. Range | 5 ~ 70°C |
| Ambient Temp. | 0~ 45°C |
| Ambient Humidity | 5 ~ 95% RH (Non-Condensing) |
| Storage Temp. | -5~ 45°C |
| Power Consumption | < 1.5W |
| Timing Error | < 1% |
| Shell Material | PC + ABS (Fireproof) |
| Installation Box | 86 * 86mm Square or European 60mm Round Box |
| Wire Terminals | Wire 2 x 1.5 mm² or 1 x 2.5 mm² |
| Protection Class | IP20 |
| Buttons | Capacitive Touch Buttons |
Dimensions
The thermostat has a main body diameter of 88.0mm, a visible thickness above the wall of 12.4mm, and a mounting depth of 60.0±2mm.
Before Wiring and Install
Important: Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.
- Ensure the product ratings match your application.
- Installation should be performed by a trained, experienced service technician.
- Verify product operation after installation.
Caution: [!] Electrical Shock or Equipment Damage Hazard. Disconnect power supply before installation.
Wiring
The thermostat is compatible with standard wiring configurations. Please refer to the specific diagrams for your model (GA, GB, GC).
- GA (Water Heating): Connects to AC 95~240V, Neutral (N), Live (L), and NTC sensor terminals.
- GB (Electric Heating): Connects to AC 95~240V, Neutral (N), Live (L), and NTC sensor terminals. Features CE LOAD.
- GC (Water/Gas Boiler): Connects to AC 95~240V, Neutral (N), Live (L), and NTC sensor terminals. Features Dry Contact.
- 24V AC connections: Terminals for 24V AC positive (AC_+), common (AC_COM), and NTC sensor are also shown.
Note: Check the voltage information printed on the back of the thermostat for actual voltage. NTC and Modbus are optional.
Installation
The thermostat fits standard 86mm square or European 60mm round pattress boxes.
- Accurately connect the power cable to the power terminal box.
- Fix the mounting plate onto the cassette using two screws.
- Hang the control panel onto the mounting plate.
- Installation is now complete.
Operation
During Power On
- Power On/Off: Press the knob to turn the thermostat on or off.
- Manual & Programmable Mode: Touch the [Mode] icon (represented by ?) to switch between manual and programmable modes. Manual mode displays [Manual], programmable mode displays [Program].
- Setting Temperature: In programmable mode, temperature and time settings are locked. Switch to manual mode by pressing the [Mode] icon. In manual mode, turn the knob to set the desired temperature.
- Adjusting/Setting the Clock: Press the [Clock] icon (represented by ?️) to set minutes, hours, and weekdays. Adjust values by turning the knob. Press the [Clock] icon again to confirm and exit.
- Locking Thermostat: Press and hold the [Power] and [Lock] icons for 5 seconds to lock/unlock. Full or half lock can be selected in system functions.
- Setting Programmable Schedules: Press the [Schedule] icon (represented by ?️) four times to access schedule settings. Minutes will flash; turn the knob to set. Press [Schedule] again for hours, then again for temperature. This completes the setting for Period 1. Repeat for Periods 2-6. Press the [Schedule] icon again to enter Saturday settings, then repeat for Sunday settings. Press the [Schedule] icon once more to confirm and exit.
Default Program Schedule Settings:
A separate schedule can be set for weekdays (Mon-Fri) and weekends (Sat/Sun).
| Time Display | MON.-FRI. (Period) | TEMP. | SAT. (Period) | TEMP. | SUN. (Period) | TEMP. |
|---|---|---|---|---|---|---|
| Period 1 | 6:00~8:00 | 20°C | 6:00~8:00 | 20°C | 6:00~8:00 | 20°C |
| Period 2 | 8:00~11:30 | 15°C | 8:00~11:30 | 20°C | 8:00~11:30 | 20°C |
| Period 3 | 11:30~13:00 | 20°C | 11:30~13:00 | 20°C | 11:30~13:00 | 20°C |
| Period 4 | 13:30~17:00 | 20°C | 13:30~17:00 | 20°C | 13:30~17:00 | 20°C |
| Period 5 | 17:00~22:00 | 22°C | 17:00~22:00 | 20°C | 17:00~22:00 | 20°C |
| Period 6 | 22:00~6:00 | 15°C | 22:00~6:00 | 15°C | 22:00~6:00 | 15°C |
Checking Floor Sensor Temperature
Press and hold the [Down Arrow] icon for 5 seconds to display the floor sensor temperature. If no external sensor is connected, "Er" will be displayed. Note: Using third-party external sensors may lead to incorrect temperature readings.
Setting Functions and Options
During power off, press and hold the [Display] and [Mode] icons for 8 seconds to access system functions. Press the [Display] icon to scroll through functions and use the knob to change options. Settings are confirmed automatically.
| Code | Function | Setting and Options | Default |
|---|---|---|---|
| 1 | Temperature compensation | -9 to 9 °C (for internal sensor) | -3 |
| 2 | Deadzone temperature | 1-5°C | 1 |
| 3 | Button locking | 00: All buttons locked except power. 01: All buttons locked. | 01 |
| 4 | Sensor type | In: Internal sensor (controls temp.). Ou: External sensor (controls temp.). AL: Internal/External (internal controls temp., external limits temp.). | AL |
| 5 | Min. set temp. | 5-15°C | 05 |
| 6 | Max. set temp. | 15-45°C | 35 |
| 7 | Display mode | 00: Display both set and room temp. 01: Display set temp. only. | 00 |
| 8 | Low temperature protection setting | 0-10°C | 00 |
| 9 | High temperature protection setting | 25-70°C | 45 |
| 10 | Economy mode | 00: Non-energy saving. 01: Energy saving. | 00 |
| 11 | Economy temp. | 0-30°C | 20 |
| 12 | Brightness at night (22:00-6:00) | 0-8. When set to 0, device runs for 10 seconds after inactivity. | 03 |
| 13 | Brightness at night (22:00-6:00) | 0-8. Screen goes completely off with no display. | 01 |
| 14 | Screen line standby brightness | 1-5 | 01 |
| 15 | Reset | 00: No factory reset. 01: Factory reset. | 00 |
| 16 | Version number | U1 | U1 |
Wi-Fi Connection
To use the Wi-Fi thermostat, configure Wi-Fi settings via a smartphone or tablet.
Step 1: Download Your App
Search for "Smartlife" on the Apple App Store or Google Play, or scan the provided QR code. Complete account registration and installation following the app's guidance.
Step 2: Connect the Thermostat
Method 1: Bluetooth Network Distribution
Enable Bluetooth on your phone. Set the thermostat to Wi-Fi enabled state (press and hold the [Wi-Fi] icon for 8 seconds when the thermostat is off). Follow the app tutorial to complete connection and settings.
Method 2: Scan QR Code Network Guide
When the thermostat is off, press and hold the [Wi-Fi] icon until the screen flashes quickly and the [Wi-Fi] icon (rapid blink) is displayed. Then, operate according to the app figures.
Method 3: AP Mode Network Guide
When the thermostat is off, press and hold the [Wi-Fi] icon until the screen flashes slowly and the [AP] icon is displayed. Follow the app figures.
General Wi-Fi Setup Steps:
- Ensure your phone is connected to a 2.4 GHz Wi-Fi network. If you have a dual-band router, select the 2.4 GHz band.
- In the app, select the device type (Thermostat).
- Confirm the indicator light status (blinking slowly or quickly) as per the app instructions.
- Enter your Wi-Fi network name and password.
- The app will search for and connect to the device.
App Operation Interface Description (Heating Thermostat):
The app interface allows users to adjust temperature, change device names, set modes, and configure weekly programming schedules.
Simple Exception Handling
| No. | Phenomenon | Handling |
|---|---|---|
| 1 | Power is on but without display. | Check if terminals between LCD panel and Power Unit Box are loose. |
| 2 | Without output but display works. | Replace with a new LCD panel or Power Unit Box. |
| 3 | Room Temp. is slightly different from actual. | Perform temperature calibration in system function item 1. |
Service
Your thermostat carries a 24-month warranty from the date of purchase. Service outside the warranty period may incur a charge. For more details, please contact the manufacturer directly.
