How to maintain solar water heaters for solar water heaters

Solar water heaters are getting more and more popular with the people, and more and more families are buying. However, when you are using a solar water heater, better maintenance can extend the life of the water heater. Here's how to maintain the solar water heater, by the way, introduce some selection techniques for solar water heaters.

How to maintain solar water heaters

1. Solar water heaters will have impurities left in the machine at the beginning of installation, so clean them before use, otherwise they will wear out.

2. The water inside the device will not be used for a long time, it will breed bacteria, so it should be discharged well, and choose the best when the temperature is low in the morning.

3. Whether the surface of the solar water heater is clean or not affects the heat collection efficiency to a large extent, so it should be regularly wiped according to the amount of dust in the area.

4. If the temperature of the water in the water tank is high for many days, the water temperature in the water tank is very high. Therefore, the cold water is first opened and then the hot water is turned on. One is to prevent the user from being burnt, and the other is to stimulate the high temperature of the pipeline.

5. The outlet end of the faucet generally has a filter device. The scale and debris in the water pipe will gather on the net. It should be removed and cleaned regularly, which can increase the flow of water smoothly.

6. In winter, the pipe is frozen, can be blown with a hair dryer, or wrapped in a dry towel, then slowly watered with warm water, can not be baked with fire, otherwise it will directly cause the pipe to burst, so it is necessary to strengthen the pipe insulation Measures.

7.2~3 years is the use node of the vacuum tube, so the vacuum tube needs to be cleaned at this moment to reduce the aging speed. Usually you can also do some disinfection work, such as you can buy some chlorine-containing disinfectant into the water inlet, let it soak for a period of time, and then release, can play a certain disinfection effect.

8. Dedicated special instruments should pay attention to lightning protection, and do not take a bath and unplug the power when there is lightning.

Solar water heater selection tips

One to look at: product quality and technical indicators

1. In general, the thermal performance indicators related to the immediate interests of consumers are the average thermal efficiency and average heat loss coefficient of solar water heaters. These two indicators are the key indicators that determine the solar collector's heat collection and insulation capacity. Generally speaking, the higher the average thermal efficiency, the higher the product heat collecting capacity; and the lower the average heat loss coefficient, the stronger the product heat storage capacity.

2. Carefully observe the coating on the glass tube in the vacuum tube. This coating is called solar selective absorption coating. The coating with good quality is uniform in color, the film layer is free from scratches, peeling or peeling, and there is no glass. The stone or the nodule phenomenon, the support member supporting the inner glass tube is placed at the end and is not loose. If the consumer does not have relevant professional knowledge, you can choose a well-known brand such as “Three High”.

3. Pay attention to the pipe spacing between the vacuum tubes. Generally, the center distance between the two tubes is about 70mm.

4. Pay attention to whether the reflector design of the product can make full use of the heat absorption surface of the vacuum tube, and whether the vacuum tube can receive the light to the utmost extent.

5. Generally, in winter and in the absence of sunlight, it is necessary to use electric heating devices, so products with electrical safety design should also be selected.

6. Check the thickness of the tank insulation. The thickness of the flat insulation layer should be 45mm thick, and the overall foam insulation of polyurethane is best. Polyurethane foam is light yellow, a bit like sponge, foam has more uniform pores, and has a certain elasticity by hand extrusion, but the insulation layer is too soft, indicating that its density is small, which is not conducive to heat preservation.

7. The design of the bracket for domestic solar water heaters should be reasonable and should have sufficient strength and rigidity to ensure sufficient load-bearing capacity. This is especially important in coastal cities. In the attack of typhoon “Yunna” last summer, many solar water heaters in Wenzhou caused some problems in wind-resistant design and product quality, causing blow-down, collapse, and vacuum tube crushing. Wait for more serious losses. This year's national sampling inspection list, the first emperor name, Yijia can wait for the brand's wind-resistant design ability to reach 12, which is worthy of consumers' trust.

Second, look at: brand protection and service quality

1. In the choice of brand, we should choose "small" to take "big". Brand is a kind of credit guarantee from manufacturers to consumers. Big brands mean more and more reliable protection. Some small and medium-sized enterprises have the mentality of taking a handful of them, and product quality and after-sales service are difficult to guarantee.

2. The after-sales service of domestic solar water heaters is very important. Because domestic solar water heaters are durable consumer goods, and usually installed on the roof, once the fault occurs, it is difficult for users to solve it themselves, so the after-sales service must be guaranteed. At present, the free warranty period for the whole machine in the market is generally 3 to 5 years.

When consumers are not familiar with the product, it is best to choose a well-known brand and a good after-sales service dealer and check the national quality inspection report of the relevant products. The brands recommended in the national sampling results, such as Huangming Yijiaeng and other enterprises, have the world's most advanced production equipment and quality testing facilities, and provide consumers with comprehensive pre-sales through the after-sales service system throughout the country. In the sale, after-sales service, users do not have to worry about the service during the use of the product.

Third, we must look at the actual needs of our family.

1. When purchasing a solar water heater, consumers should also consider the number of permanent residents in the home to determine the water capacity of the purchased solar water heater. Generally, the standard of 40 liters of water per person is suitable. In addition, you should ask the seller when purchasing. The water capacity they claim refers to the total water capacity or the actual water capacity that can be used.

2. Consumers should also note that we measure whether a water heater is easy to use. It is never a standard in winter and summer. It is also rainy in summer and bright in winter. As long as there is a sun, the general solar water heater can operate. The really easy-to-use solar water heater is to provide consumers with sufficient hot water when the intensity of sunshine is very low, such as in rainy days. Therefore, when consumers choose solar water heaters, do not let the dealers take the nose, you must polish your eyes and choose the quality products that suit you.

Choosing a good solar water heater not only makes your money worthwhile, but also serves you longer. When you choose a solar water heater, the above solar water heater maintenance method will definitely help you a lot. Of course, the selection of solar water heaters allows you to avoid inferior products, not afraid of being pitted!