21-Layer Safety Protection
Domestic Hot Water Temperature Limit
Limits domestic hot water temperature to 60°C to help prevent scaling in the water system and reduce the risk of scalding.
Overheat Protection
Prevents the wall-hung boiler from overheating and displays an overheat fault code for safe operation.
Water System Overpressure Protection
When heating system return flow is restricted and pressure exceeds 3 bar, the pressure relief valve opens automatically to protect the heating system.
Domestic Hot Water Flow Protection
To prevent scalding caused by low water flow, the bathing function starts only when the flow rate reaches 2 L/min.
IPX4 Insulation Protection
Ensures reliable operation even in demanding environments.
Four-Minute Restart Delay
After flame shutdown, the boiler delays restart to prevent frequent ignition and ensure safe operation. Unless manually reset, it will restart only after the delay period.
Heating System Pressure Stabilization
The expansion tank helps absorb pressure increases caused by thermal expansion of heating water, keeping system pressure stable.
Post-Purge Function
After combustion stops, the fan purges residual gas from the chamber, preventing local overheating and extending the service life of internal combustion components.
Manual Restart After Gas Interruption
When the gas supply is interrupted, the boiler stops automatically. Once gas is restored, it will not restart automatically and must be manually reset, helping users identify issues and contact the property manager or gas company when needed.
Anti-Scaling Protection
A dual herringbone circuit design increases heat exchange area and extends water heat transfer time. Turbulators inside the copper tubes create turbulent flow, improving heat efficiency, reducing scale buildup, and extending product life.
Heating Water Temperature Limit
When heating water reaches 80°C, temperature limit protection is activated and high-flame operation stops. After four minutes, the boiler restarts once the return water temperature drops 25°C below the set temperature.
Low Water Pressure Protection
The boiler will not start when water pressure is too low. The heating system starts only when pressure exceeds 0.3 bar.
Dry-Burn Protection
When system return flow is restricted, the automatic bypass valve opens to ensure sufficient water flow through the main heat exchanger and prevent dry burning.
Flame Failure Protection
The ionization flame control device cuts off the gas supply and displays a fault code when the flame goes out, helping prevent residual flame risks and incomplete combustion.
Anti-Seize Protection
The circulation pump automatically runs for 5 minutes every 24 hours to prevent seizing.
Frost Protection
To protect the household gas wall-hung boiler, when water temperature drops below 5°C, the circulation pump and burner start automatically and heat the system water to 15°C before stopping.
Voltage Protection
High-voltage protection activates above 242V, while low-voltage protection activates below 187V, helping protect key boiler components.
Anti-Oxygen Corrosion Protection
A high-efficiency automatic air vent removes air from the heating water, reducing oxygen content to help prevent oxidation, scaling, and extend product life.
Pre-Purge Function
Before ignition, the fan purges residual gas from the combustion chamber to help prevent explosive ignition.
Air Pressure Protection
If the flue is blocked or backdraft occurs, the flame shuts off automatically and a fault code is displayed.
Power Failure Protection
After a power outage and automatic power recovery, the wall-hung boiler restarts automatically and resumes operation according to the previous settings.