Fully premixed condensing wall-mounted boilers, as efficient and energy-saving heating equipment, are increasingly favored by households and commercial establishments. However, to ensure that fully premixed condensing wall-mounted boilers maintain good operating conditions, avoid frequent malfunctions, and prolong their overall service life, proper maintenance is crucial. Many users often neglect routine maintenance when using fully premixed condensing wall-mounted boilers, leading to issues such as premature performance degradation and increased energy consumption. Therefore, mastering scientific maintenance methods is essential.

1. Daily cleaning: Clearing operational obstacles for fully premixed condensing wall-mounted boilers

Daily cleaning is the fundamental task for maintaining a fully premixed condensing wall-mounted boiler. It effectively reduces the wear and tear caused by impurities on the internal components of the equipment, ensuring operational efficiency.

Shell cleaning: Wipe the shell of the fully premixed condensing wall-mounted boiler with a dry and soft cloth every week to remove surface dust, oil stains, and other contaminants. If encountering stubborn stains, dip a small amount of neutral detergent and gently wipe it off. Avoid using highly corrosive detergents to prevent damage to the shell coating, which could affect the appearance and protective performance of the equipment.

Filter cleaning: The water inlet of a fully premixed condensing wall-mounted boiler is usually equipped with a filter to filter out impurities in the water and prevent blockage of the pipeline and heat exchanger. It is recommended to disassemble the filter every 1-2 months, rinse the filter mesh with clean water to remove trapped sediment, rust, and other impurities, and reinstall it after rinsing. If the filter mesh is damaged, it needs to be replaced in time to avoid impurities entering the interior of the equipment and causing malfunctions.

Smoke exhaust duct cleaning: Blockage of the smoke exhaust duct can lead to poor smoke exhaust from fully premixed condensing wall-mounted boilers, and even pose safety hazards. Check the smoke exhaust duct every 3 months to see if there are any blockages such as dust or insect corpses. If there are, use a special tool to clean them. At the same time, check whether the pipe connections are well sealed. If there is any looseness or aging of the seals, they need to be tightened or replaced in time to prevent smoke leakage.

II. Regular inspection: promptly identify potential issues with fully premixed condensing wall-mounted boilers

Conducting regular comprehensive inspections on fully premixed condensing wall-mounted boilers can help identify potential faults in advance, prevent minor issues from escalating into major failures, and reduce maintenance costs.

Water system inspection: Check the water system of the fully premixed condensing wall-mounted boiler every six months, including pipes, valves, water pumps, and other components. Inspect the pipes for any damage or leakage, check the valve switches for flexibility, and listen for any abnormal noise during water pump operation. If any pipe leakage is detected, replace the damaged pipe promptly; if the valve switches are not flexible, add an appropriate amount of lubricant; if the water pump produces abnormal noise, inspect for any impurities causing blockage or component wear, and contact a professional for maintenance if necessary.

Combustion system inspection: The combustion system is the core component of a fully premixed condensing wall-mounted boiler, directly affecting the heating efficiency and safety of the equipment. It is recommended to have a professional conduct a comprehensive inspection of the combustion system, including components such as burners, nozzles, and heat exchangers, once a year. Inspect the burners for carbon buildup and blockages, and clean them if necessary. Check the nozzles for integrity, deformation, or wear, ensuring that fuel oil or gas can be atomized normally. Inspect the surface of the heat exchanger for scale and dust accumulation, and clean it promptly to improve heat transfer efficiency and avoid increased energy consumption due to poor heat transfer.

Electrical system inspection: Electrical system malfunctions may prevent the fully premixed condensing wall-mounted boiler from starting normally or operating abnormally. Conduct an inspection of the electrical system quarterly to check for signs of aging or damage to power and control cables, and ensure that terminal blocks are secure. Additionally, verify that buttons and indicator lights on the control panel are functioning properly. If any button malfunctions or indicator light is abnormal, promptly investigate the cause of the fault and replace relevant components if necessary.

III. Rational use: Reduce unnecessary wear and tear of fully premixed condensing wall-mounted boilers

The correct usage method can effectively reduce the wear and tear of fully premixed condensing wall-mounted boilers, extend their service life, and reduce energy consumption.

Control operating temperature: Reasonably set the operating temperature of the fully premixed condensing wall-mounted boiler according to actual needs to avoid excessively high or low temperatures. During winter heating, it is advisable to set the indoor temperature at 18-22℃. Excessively high temperatures will not only increase energy consumption but also accelerate the aging of equipment components. When using domestic hot water in summer, setting the water temperature at 40-50℃ can meet daily needs. Avoid frequent temperature adjustments to reduce the number of equipment starts and stops.

Avoid frequent start-ups and shutdowns: Frequent start-ups and shutdowns of fully premixed condensing wall-mounted boilers can increase equipment wear and tear and shorten their service life. When the equipment is not needed but will be used again in a short period of time (such as 1-2 days), it is recommended to set the equipment to a low-temperature operation mode rather than shutting it down directly. If the equipment will not be used for a long period of time (such as more than a week), it is necessary to turn off the power and water supply to the equipment and drain the water from the pipes to prevent pipe freeze-bursting in winter.

Use high-quality water and fuel: The water circuit system of a fully premixed condensing wall-mounted boiler has high requirements for water quality. Using water with excessive impurities and high hardness can easily lead to scaling of pipes and heat exchangers, affecting the operating efficiency of the equipment. It is recommended to install a water purifier at the inlet of the equipment, regularly test the water quality, and perform softening treatment if necessary. At the same time, use fuel oil or gas that meets national standards, avoid using inferior fuel, and prevent incomplete combustion that can lead to carbon buildup, blockage of nozzles and burners, and affect the normal operation of the equipment.

The maintenance of fully premixed condensing wall-mounted boilers requires long-term commitment, encompassing daily cleaning, regular inspections, and rational use, with every aspect not to be overlooked. Only by mastering scientific maintenance methods and implementing them in practical use can the fully premixed condensing wall-mounted boiler maintain a good operating condition, effectively extend its service life, provide users with stable and efficient heating and domestic hot water services, while reducing usage costs and failure risks.