Ecobuy Well AT511-OT Wireless Room Thermostat User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your Ecobuy Well AT511-OT Wireless Room Thermostat. Please read it carefully before using the device. If the device is transferred to another user, ensure this manual is included.

2. Package Contents

Verify that all items are present in your package:

• Thermostat × 1
• Receiver × 1
• User Manual × 1

3. Product Overview

3.1 Thermostat Interface and Icons

The thermostat features a clear display and intuitive controls. Below is an explanation of the icons and indicators:

• Low Battery: Indicates that batteries need replacement.
• RF Signal: Shows a stable wireless connection.
• Key Lock: Indicates that the buttons are locked to prevent accidental changes.
• Target Temperature: Displays the user-defined temperature setting.
• Heating Control Mode: The thermostat is configured for heating control.
• Room Temperature: Current room temperature displayed.
• Cooling Control: The thermostat is used to control cooling.
• Flame: Indicates that heating is currently in progress.
• Auto Mode: Operates according to the programmed schedule.
• Holiday Mode: Maintains a preset temperature during your absence.
• Manual Mode: The target temperature is controlled as the set value.
• Temporary Mode: In auto mode, if the temperature is adjusted, the system will operate at this new target temperature until the end of the current scheduled period, then revert to auto mode.
• OS Control Mode: Utilizes "Optimal Start/Stop" logic for energy efficiency.
• TPI Control Mode: Time Proportional & Integral control for more stable temperatures, optimized for Opentherm compatible boilers.
• Time/Parameter Name: Displays the current time or menu parameter name.
• Temperature: Displays temperature or menu values.
• Week: Displays the day of the week.
• Schedule Period: Displays the time period of the schedule.
• Domestic Hot Water (DHW): Displays when using domestic hot water (applicable to boilers with Opentherm protocol).
• Standby Mode: Operates at the anti-freezing temperature.
• Boost: Maximum load heating is used to quickly reach the target temperature.

3.2 Receiver Button and LED Overview

• Mode Button: Press to manually toggle the boiler heating on or off. This manual override is for use during communication failures or if the thermostat is faulty. Once communication is restored, the receiver returns to thermostat control.
• Set Button: Press and hold until the RF LED flashes rapidly, then release to enter pairing mode.
• Power / Wi-Fi LED (Applicable Gateway): Illuminates when power is on.
• Heating / RF Signal LED:
  • Fast blinks: Receiver is in pairing mode.
  • Short, Rapid blinks: Receiver is transmitting or receiving data.
  • Keeps lights on: Heating is active.
• Opentherm Communication LED:
  • Keeps lights on: Opentherm communication is stable.
  • Blink: Opentherm communication failure.
  • Not lighting: Opentherm communication is not connected.

4. Setup and Installation

4.1 Choosing the Thermostat Location

• Mount on an interior wall within the heated zone.
• Avoid installation in enclosed spaces like bookshelves or cabinets.
• Position away from drafts near windows or doors.
• Approximately 1.5m above floor level.
• Keep away from heat sources (radiators, fireplaces, TVs) and avoid direct sunlight.
• Ensure strong wireless signal reception (stable communication with the receiver).

Notice: Ensure no other temperature control devices are active. If the radiator has a TRV (Thermostatic Radiator Valve), ensure it is set to fully open.

4.2 Thermostat Installation Steps

4.2.1 Wall-Mounted Installation

1. Gently pry open the housing using a flat-head screwdriver. (Skip if front and back covers are already separated).
2. Fix the rear cover to the wall using screws. For junction box installation, use M4 x 25mm machine screws. For wall-surface mounting, use M4 x 25mm self-tapping screws.
3. Install the front cover.
4. Install 2 x 1.5V AAA alkaline batteries, observing correct polarity.
5. After powering on, the interface first displays the software version number, then all icons, and finally automatically enters the main interface.

4.2.2 Tabletop Placement (Using Stand)

1. Insert the stand bracket into the slot and slide upwards to secure.
2. Place on the desktop in the heating or cooling area.

4.3 Receiver Placement

• Install near the boiler, but never inside the boiler casing.
• Make sure wireless signals can be received.

Notice: Since the thermostat uses radio waves to communicate with the receiver, metal objects (steel walls, metal filing cabinets, kitchen appliances, mirrors, etc.) can greatly affect wireless signal reception. In an open environment, the range is 200m; however, indoor range varies by obstacles.

4.4 Receiver Installation Steps

1. Insert a flat-head screwdriver into the slot and twist to release. (Do not insert through the casing to avoid damage).
2. Fix the rear cover to the wall using screws. For junction box installation, use M4×25mm machine screws. For surface mounting, use self-tapping screws of M4×25mm.

4.4.1 Connecting the Receiver and Boiler or Actuator

Important: Isolate the power supply to the boiler or actuator before starting. Locate the Opentherm (OT) or On/Off terminals on the boiler board. Refer to your boiler manual for compatibility.

Figure 1: Wiring diagram for Opentherm protocol boiler, On/Off boiler, and normal close actuators.

Important Notice: Heating and cooling systems must be wired independently and controlled separately. ESD can damage circuits. Touch a grounded object before handling. Installation must be performed by a qualified professional or heating engineer.

4.5 Pairing the Thermostat and Receiver

1. Press and hold the SET button on the receiver. Release when the RF LED flashes rapidly.
2. Press and hold the MENU button on the thermostat. Navigate to parameter P02.
3. Press MENU to initiate pairing.
4. Once paired successfully, the thermostat returns to the home screen.

If pairing fails, please check the operation steps and try again.

5. Operation

5.1 Button Functions

• Mode button: Press to cycle through operating modes (Manual, Auto, Standby, Holiday). Press and hold to activate Boost mode. Acts as a "Back" button within setting menus.
• Menu button: Press and hold for 2 seconds to access the settings menu. Acts as a "Confirm" button within setting menus.
• Up button (+): Press to increase the value. Press and hold to rapidly increase values.
• Down button (-): Click to reduce the value. Long press to quickly reduce the value.
• Key lock: Press and hold the Combination button for 5 seconds to lock/unlock the keypad.

5.2 Setting the Time and Date

1. Long press the MENU button to enter the settings menu, then click the MENU button again to confirm and enter P01 settings.
2. The flashing numbers can be set. Click the MENU key to confirm. After all settings are completed, click the confirm button again. Finally, click the MODE key to return.
3. Finally, set daylight saving time, with the default setting being "yes".

5.3 Programming Your Heating Schedule

You can program up to 8 distinct time/temperature periods per day. The thermostat supports three scheduling options:

• 5+2 days: Groups Monday-Friday and Saturday-Sunday schedules.
• 7 days: Each day of the week can have a unique schedule.
• 24 hours: One schedule is applied to every day of the week.

To set the schedule:

1. Enter P03 settings.
2. Default is 5+2 days schedule.
3. Click the "+" button to select the 7 days schedule.
4. Click the "+" button again to select the 24 hours schedule. Click the MENU button to confirm and enter the settings.
5. Set according to the flashing values in sequence. After setting is completed, click the MENU to confirm.

Figure 2: Schedule function display.

5.4 Holiday Mode

In Holiday mode, you can set the number of days for your absence. The thermostat will maintain a preset temperature during this period and automatically enter the anti-freezing state.

5.5 Boost Function

To quickly warm up the room, press and hold the MODE button for 5 seconds to activate Boost heating mode. You can then use the + or - buttons to set the heating time.

5.6 Multiple Work Modes

The thermostat supports various work modes including Auto, Manual, Standby, Holiday, and Boost, suitable for different heating requirements.

• Auto mode: Controls the temperature according to the schedule, suitable for people with regular rest patterns.
• Manual mode: Allows you to set the temperature according to your own needs and maintain a constant temperature.
• Holiday mode: When you are away from home for a long time, select the vacation mode and it will automatically enter the anti-freezing state.
• Boost function: It can quickly warm up the room, allowing you to enjoy a comfortable room temperature more quickly.

5.7 Child Lock

Figure 3: Child lock feature to prevent accidental operation.

The child lock feature prevents accidental operation, which may cause unnecessary troubles. Activate it by pressing and holding the Combination button for 5 seconds.

5.8 Display Brightness and Duration

Figure 4: Adjustable display brightness and duration settings.

The brightness and duration of the display can be adjusted according to your needs. Setting it to low brightness and short duration can extend the battery life.

5.9 Control Heating or Cooling

Figure 5: Thermostat display indicating heating and cooling control modes.

The thermostat can control both heating and cooling systems. When used for cooling systems, a separate thermostat must be installed on the refrigeration equipment.

6. Maintenance

6.1 Changing the Battery

Figure 6: Easy battery replacement by opening the front cover.

To change the batteries, simply open the front battery cover and replace the 2 x 1.5V AAA alkaline batteries, ensuring correct polarity.

6.2 Low Battery Alarm

Figure 7: Low battery alarm indicator on the thermostat display.

When the low battery icon appears on the display, prompt replacement of batteries is required to ensure continuous operation.

7. Troubleshooting

If you encounter issues with your thermostat, refer to the table below for common problems and solutions:

7.1 Boiler Reading Parameters (Opentherm Protocol)

For boilers supporting the Opentherm protocol, the thermostat can display the following parameters:

7.2 Boiler Setting Parameters (Opentherm Protocol)

For boilers supporting the Opentherm protocol, the following parameters can be set:

8. Specifications

8.1 Thermostat Specification

Figure 8: Detailed specifications for the AT511RT Thermostat.

8.2 Receiver Specification

9. User Tips

• To maximize battery life, consider setting the display brightness to a lower level and the display duration to a shorter period.
• If you experience intermittent communication, try repositioning the thermostat or receiver to minimize interference from large metal objects or other electronic devices.
• Always ensure your boiler's TRV (Thermostatic Radiator Valve) is fully open if you are using the thermostat to control the room temperature.

10. Warranty and Support

This product comes with a 2-year warranty. For detailed warranty information or technical support, please refer to the official user manual PDF available at User manual (PDF).

11. Safety Information

11.1 Waste Electrical and Electronic Equipment (WEEE)

• Do not dispose of this device with regular domestic waste! Electronic equipment must be disposed of at local collection points for waste electronic equipment in compliance with the Waste Electrical and Electronic Equipment Directive.
• Dispose of batteries in accordance with local regulations. Do not dispose of with household waste.

11.2 General Safety Warnings

• The device is not a toy; do not allow children to play with it.
• Do not leave packaging material lying around. Plastic films/bags, pieces of polystyrene, etc., can be dangerous in the hands of a child.
• ESD (Electrostatic Discharge) can damage circuits. Always touch a grounded object before handling the device.
• Installation must be performed by a qualified professional or heating engineer.

Due to technological advancements or functional upgrades, technical parameters or functions of this product may change without prior notice. The final interpretation rights belong to our company.