1) It can improve the efficiency of heat exchange in the wall-hung boiler and reduce the gas consumption. Through experimental comparison, the wall-hung boilers that have been operated under the same conditions have a heating speed of about 25% faster than that of the wall-hung boilers that have not been cleaned and maintained. That is to say, the wall-hung boilers can be cleaned after being cleaned. It saves about 25% of gas on the basis. If you use the gas for every 100 square meters of about 600 yuan / month, you will save 800---1000 yuan in the use of the wall-hung boiler for one year (including the heating season)!
2) Extend the service life of the wall-hung boiler, and the internal cleaning and descaling can effectively reduce the load of the main components such as the water pump and the heat exchanger, thus making the boiler run more smoothly and prolonging its service life. If the boiler is cleaned and maintained once every two years, the service life of the equipment can be extended for 3-5 years.
3) Increase the safety of the operation of the wall-hung boiler, through the door cleaning and professional comprehensive testing and debugging of the wall-hung boiler operation, it can timely and effectively find out and eliminate the problems existing in the operation of the wall-hung boiler to ensure the safe operation of the wall-hung boiler.
5. Under what circumstances does the wall-hung boiler need to be cleaned and maintained?
1) Your fireplace has been used more than two heating seasons.
2) It is felt that the amount of gas used in the fireplace is larger than before.
3) The heating time of the wall-hung boiler increases, the heat in the hot water is cold, and the amount of hot water in the unit time decreases.
4) The sound of the wall-hung boiler is increased, and an abnormal noise will be emitted from time to time.
With the increasing living standards of people, the requirements for the comfort of home heating and domestic hot water are also increasing. At present, as a household heating and domestic hot water supply equipment, heating and hot water dual-use gas wall-mounted boilers have become an indispensable part of people's lives.
Gas fireplaces can be used in Europe for 15-20 years, and the commitment of Chinese merchants is 10-15 years. If the gas wall-mounted boiler is not maintained and maintained, it can be used for about 10 years. If the boiler can be regularly maintained and maintained, it should not be a problem for more than 15 years. Others also look at the external conditions and usage of the boiler.
Why is there such a big gap in the same gas-fired boilers? The reasons should be many, the main reasons are as follows:
1 Water quality problem
The water quality of the equipment connected to China is higher than that of Europe. The water used in large boilers is treated softened water and is not easy to scale. However, all of our wall-hung boilers use tap water without any treatment. When water is heated, calcium (Ca) magnesium (Mg) iron (Fe) in water rapidly combines with carbonate (CO3) silicate (SiO3), hydroxide (OH), etc. in water to produce calcium carbonate ( Scales such as CaCO3) and magnesium carbonate (MgCO3) are firmly adhered to the inner walls of heat exchangers and pipes. As a result, the heat exchange effect of the system is deteriorated, the pipe diameter is reduced, the water flow is not smooth, or the blockage is increased, and the energy consumption is increased, and the water pump of the wall-mounted boiler is easily broken when the water flow is blocked, and the main heat exchanger is in flame. It is also easily damaged at high temperatures. Thereby shortening the service life of the boiler water circulation system equipment. Maintenance of the water system: After the heating season, drain the water from the heating system, inject new water, and rinse off the dirty water in the system until it is thoroughly rinsed. After rinsing, add fresh softened water and adjust the pressure to normal. At the beginning of the new heating season, another flushing and changing of water can be performed. The heating system can not be in the state of no water for a long time, which will speed up the oxidation and corrosion process of the heating system, which is not conducive to the maintenance of the heating system.
2 temperament problems
The gas source in Europe is mainly natural gas. At present, China's gas source is mainly natural gas, and other liquefied petroleum gas and artificial gas. Natural gas and liquefied petroleum gas are relatively pure gas sources. Compared with natural gas, liquefied petroleum gas is more expensive, natural gas is more economical and practical; artificial gas is relatively poor, and its internal impurities are many and the composition is not too good. Stable, low heat value, and have a great impact on equipment operation and life.
First of all, during the combustion operation of the gas wall-mounted boiler, impurities and dust in the air will enter the inside of the boiler to form part of the sediment. The heat exchange of the boiler will be affected for a long time, and some of it will be deposited in the fan and the flue, which will affect Boiler exhaust and ventilation, there will be noise and faults in severe cases.
Second, in some cases, impurities in the pipeline will enter the gas valve with the gas, affecting the gas valve and nozzle. There is a gas filter in front of the gas valve, which needs to be cleaned frequently to ensure the smooth flow of gas and the normal operation of the wall-mounted boiler. Since the diameter of the nozzle is relatively small, the long-term non-cleaning will form a clogging phenomenon, which affects normal combustion.
Third, after long-term operation, the gas-fired boiler will leave excessive impurities and dust in the air chamber and the combustion chamber. In some cases, it will affect normal full combustion, reduce combustion quality, and affect heat input.
In addition, after the artificial gas is burned, many impurities will be generated, and the impurities will adhere to the surface of the burner and the heat exchanger. After a long time, the inside of the boiler will accumulate too much impurities, affecting the normal operation and combustion of the boiler, thereby reducing the thermal efficiency, or making the boiler Various failures occur; these impurities become acidic and have a certain corrosive effect on the internal parts of the boiler, thus adversely affecting the use and life of the boiler.
3 boiler maintenance issues
The use of gas-fired boilers in Europe is large and a well-established maintenance system has been developed. At present, domestic gas-fired wall-hung boiler manufacturers and distributors are not satisfied with the maintenance of boilers, whether from the propaganda, standards, norms, or after-sales service, and have not caused enough attention in all aspects. Therefore, in China's gas wall-mounted boilers compared with Europe, the service life is shorter, and the failure rate is also more.
The maintenance of the boiler should be an all-round inspection, cleaning and maintenance of the boiler, including waterways, circuits, gas circuits, combustion parts and related accessories. Boiler maintenance is generally once a year or biennial (manual gas is more frequent), maintenance content is mainly;
1. Clean the burner and nozzle;
2. Clean the heat exchanger (clean it with detergent if necessary);
3. Clean the fan and venturi tube;
4. Clean the flue and check the fixed condition;
5. Check and clean the ignition electrode;
6. Clean the combustion chamber dust and scale;
7, check clean automatic bypass, temperature sensor, safety valve and other water components;
8. Clean the auxiliary board and check the minimum starting flow of sanitary hot water;
9. Clean the scale and dirt of the water system (if necessary, clean it with detergent);
10. Check the clean gas valve;
11. Check and adjust the secondary gas pressure to normal value;
12. Check the safety device and block the flue to see if the flame is extinguished and protected.
13. Check the pressure of the expansion tank (if it is insufficient, it will be normal);
14. Comprehensively check and test the combustion of the boiler.
15. Check the outside of the boiler and inform the user of the current condition of the boiler.
Regular maintenance of the boiler can prolong the service life of the boiler, improve the working efficiency of the boiler, reduce the incidence of failure, and facilitate the normal and safe operation of the boiler. After regular maintenance, the gas wall-mounted boilers have better service life, energy efficiency and failure rate than without regular maintenance (especially boilers that have been in operation for more than two years).
4 use problems
The proper operation of the boiler is very important. After the installation and commissioning of the gas wall-mounted boiler, the user should be trained in operation and use in detail. For example: water injection problems, water discharge problems, temperature adjustment problems, equipment switching machine precautions, simple problem handling, and so on. The manual should be handed over to the user, and a detailed after-sales service call is left. Regular operation can reduce after-sales service pressure and reduce the damage rate and failure rate of accessories.
Gas wall-mounted boilers have been used in Europe for decades. In China, but with the improvement of natural gas extraction and transportation capacity in China, natural gas in the pipe network will be further popularized, and gas wall-mounted boilers will have greater development. space. The development of the industry requires a more professional team and requires more people's efforts to drive its rapid development. With perfect norms, reasonable standards, strong technical support, complete after-sales service guarantee, and establish a good market reputation, we can develop rapidly and steadily.
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