Introduction
The Minco Heat M4LR is a wireless remote control thermostat designed for gas boiler systems. It features an LCD digital display, weekly programming capabilities, and an anti-freeze function to maintain optimal indoor temperatures efficiently. This manual provides essential information for the setup, operation, and maintenance of your thermostat.
Specifications
| Feature | Specification |
|---|---|
| Model Number | M4LR |
| Brand Name | MINCO HEAT |
| Working Voltage | 3 x 1.5V AA battery (not included) |
| Power Consumption | ＜170uW |
| Temperature Control Range | 35~95℃ (default limit of 60℃) |
| Temperature Control Accuracy | ±1℃ |
| Sensor | In-built |
| Color | White |
| Backlight Color | Blue |
| Load Current | 3A |
| Certification | CE |
| Origin | Mainland China |
| Applications | Thermostat for gas boiler |
| Screen Type | LCD screen |
Package Contents
Upon opening your package, please ensure all the following items are present:
- 1 x Minco Heat M4LR Gas Boiler Thermostat
- 1 x Receiver Unit
- 1 x English Instruction Manual
Setup
Power Supply
The thermostat unit offers two power options:
- Battery Power: Insert three 1.5V AA batteries (not included) into the battery compartment.
- Type-C USB Power: Connect a Type-C USB cable (not included) to the thermostat for continuous power.
Ensure batteries are inserted with correct polarity. If using USB power, batteries can serve as a backup.
Figure 1: Two power supply options for the thermostat.
Mounting
The thermostat can be conveniently mounted on a wall or placed on a flat surface using its included base.
Figure 2: Thermostat on its desktop stand.
Wiring Diagram (Receiver Unit)
The receiver unit connects directly to your gas boiler. Please follow the wiring diagram carefully. It is recommended that installation be performed by a qualified professional.
Figure 3: Product wiring diagram for the receiver unit.
Connection Points:
- 1: Connection to boiler
- 2: 110-220V Power Supply
- 3: NO (Normally Open) Actuator
- 4: NC (Normally Closed) Actuator
- 5: Pump
For general gas boilers, connect with the K1 and K2 dry contacts. The receiver has reserved ports for connecting a water pump and actuators if necessary. Use 1.5-2.5 mm² hard wire for installations. Ensure no water, mud, or other debris enters the thermostat or receiver during installation to prevent damage.
Wireless Connection
The thermostat and receiver communicate wirelessly. Once both units are powered, they should automatically establish a connection. The display on the thermostat will indicate successful communication (e.g., wireless signal icon).
Figure 4: Wireless communication between thermostat and receiver.
Operating Instructions
Thermostat Controls and Display
Figure 5: Function analysis of thermostat buttons and display.
Buttons:
- Power Button (On/Off): Press to turn the thermostat on or off.
- M (Mode) Button: Press to cycle through different operating modes (e.g., manual, programmable).
- Up Arrow Button: Increases the temperature setting or navigates menu options.
- Down Arrow Button: Decreases the temperature setting or navigates menu options.
Display Indicators:
- Time: Displays the current time.
- Room Temperature Show: Shows the current ambient room temperature.
- Heating Indication: Icon indicating when the boiler is actively heating.
- Set Temperature: Displays the desired target temperature.
- Model: Indicates the current operating mode.
Weekly Programming Function
The thermostat supports flexible weekly programming to optimize energy usage and comfort. You can set different temperature schedules for various days and times.
- Weekdays (5/6/7 days): Up to 6 distinct time periods can be set with individual temperature targets.
- Rest Days (2/1/0 days): Up to 2 distinct time periods can be set with individual temperature targets.
Refer to the detailed programming instructions in the included English instruction manual for specific steps on how to set your desired schedule.
Figure 6: Thermostat displaying programming function.
Smart Anti-freeze Mode
This feature protects your heating system from freezing. When activated, the thermostat will automatically turn on the boiler if the room temperature drops below a certain threshold, even if the thermostat is set to an 'off' or low-temperature mode. This is particularly useful when you are away from home for extended periods.
Figure 7: Thermostat maintaining a constant temperature environment with anti-freeze mode.
Children Lock
To prevent accidental changes to the thermostat settings, a child lock function is available. Consult the full instruction manual for details on how to activate and deactivate this feature.
Maintenance
- Cleaning: Clean the thermostat and receiver with a soft, dry cloth. Do not use abrasive cleaners, solvents, or allow any liquids to enter the devices.
- Battery Replacement: Replace the AA batteries in the thermostat unit when the low battery indicator appears on the display to ensure continuous operation.
- Environmental Protection: Keep the thermostat away from direct sunlight, heat sources, and extreme humidity.
Troubleshooting (FAQ)
- Q: Is this thermostat suitable for electric heating elements?
- A: No, this model is specifically designed for water heating systems to control gas boilers.
- Q: Is an external sensor included?
- A: No, the thermostat features an in-built sensor for room temperature detection.
- Q: Are batteries included with the product?
- A: No, due to delivery limitations, batteries are not included. You will need three 1.5V AA batteries.
User Tips
- Energy Efficiency: Maximize energy savings by utilizing the weekly programming function to align heating schedules with your daily routine.
- Continuous Power: For uninterrupted operation, consider using the Type-C USB power supply option, which also eliminates the need for frequent battery changes.
- Child Safety: Familiarize yourself with and activate the child lock feature to prevent unintended adjustments to your heating settings.
Warranty and Support
For technical assistance, troubleshooting, or inquiries regarding your product's warranty, please contact the retailer from whom you purchased the Minco Heat M4LR thermostat. It is advisable to retain your purchase receipt as proof of purchase for any warranty claims.
