1, open vertically (the handle opens in the same direction as the pipe), and open counterclockwise (left-handed) on the left.
2. Before the first power-on, turn on the left and right switches completely, and then power on after the water comes out. In the future, you need to turn on and off two water switches (for example, turn off the left switch as long as it is cold water) and turn the gate valve clockwise.
3. Turn counterclockwise to open the gate valve. When using it for the first time, open the water inlet valve, plug in the water heater, and open two gate valves during normal use.
Advantages of extended data: high safety performance and clean energy. Water can be supplied in many ways. It can be used not only for showering and bathing, but also for washing clothes and vegetables. Installation is also simple and easy to use.
Entrance picture
Water storage electric water heater refers to a fixed appliance for heating water, which can store hot water for a long time or temporarily, and is equipped with a device to control or limit the water temperature. Household water storage electric water heaters are commonly used, with convenient installation and low price, but they need to be heated for a long time and can only be used after reaching a certain temperature.
There are many brands in the electric water heater market, and the quality is uneven. Most customers are non-professionals and it is difficult to identify them. The water storage electric water heater belongs to the national compulsory inspection product, and the 3C mark should be recognized when purchasing.
Chinese name
water storage type electric water heater
Foreign name
water storage type electric water heater
type
Fixing appliance
superiority
High safety performance.
disadvantaged
bulk mass
classify
According to their export types, storage electric water heaters are divided into closed electric water heaters and open electric water heaters. The enclosed electric water heater is controlled by one or more valves at the water outlet and works under tap water pressure. This kind of water heater has the advantages of flexible installation position, high outlet pressure and small heat loss.
However, because its liner works under pressure, it needs to use thicker materials, which requires higher manufacturing technology; The outlet of the open electric water heater is open, and the water quantity is controlled by the valve on the water inlet pipe.
This kind of water heater works under normal pressure, so its inner container has lower requirements and relatively simple structure. At present, most of the water storage electric water heaters produced by manufacturers are closed electric water heaters. Water storage electric water heaters can be divided into three types: wall-mounted horizontal, wall-mounted vertical and floor-mounted.
The wall-mounted horizontal water heater is horizontally hung on the wall when installed, which is suitable for water heaters with a capacity not exceeding 100L and a certain strength requirement for the wall. The wall-mounted vertical water heater is vertically hung on the wall when installed, which is suitable for water heaters with a capacity not exceeding 100L. It has certain strength requirements for the wall and needs to be installed on the load-bearing wall, and the non-load-bearing wall needs to be installed with safety brackets in advance. Floor-standing water heaters can be placed vertically on solid ground when installed, and are suitable for large-capacity water heaters above100l.
water storage type electric water heater
application area
1) Domestic water heaters generally use a single-phase 220V power supply, and the power is not more than 2.5kW The power of some domestic central water heaters used in places with large water consumption such as villas can reach more than 10kW.
2) Commercial water heaters generally use a three-phase 380V power supply with a power of about 50kW.
merits and demerits
Advantages: high safety performance and clean energy. Water can be supplied in many ways. It can be used not only for showering and bathing, but also for washing clothes and vegetables. Installation is also simple and easy to use.
Wall mounted horizontal
Disadvantages: Generally, it is bulky and needs preheating before use. It is impossible to use water continuously beyond the rated capacity. If there are many people at home, you have to wait in the shower. In addition, the hot water that has not been used up after washing will slowly cool down, causing waste. The high water temperature is easy to scale, and it is difficult to clean the dirt, which also affects the life of the heater.
capacity
The capacity of water storage electric water heater is in liters (L). The larger the capacity, the greater the water heating capacity of the water heater. At present, the common capacities in the market are: 10L, 15L, 40L, 50L, 60L, 80L, 100L, and a few manufacturers can produce products above 100L. Users can choose the capacity of the water heater according to the purpose, family size and water use habits.
10L- 15L water heaters are generally used for washing dishes in the kitchen, washing vegetables or washing faces and brushing teeth in the bathroom, so people call them kitchen treasures or kitchen treasures.
The capacity of the water heater for bathing should be above 40L, and the water heater with 40-50L capacity should be used by 1 person. The water heater with 50-60L capacity is suitable for two people. A family of three is suitable to choose a water heater with a capacity of 80- 100L; Families with more than 3 people are suitable to choose water heaters of 120L or more; If you are used to taking a bath in a bathtub, you'd better choose a water heater above 150L.
Key part
1) inner container
The inner container is the core component of the water heater, which directly affects the safety performance, service performance and working life of the water heater. When choosing a water heater, users should pay attention to whether the steel plate of the water heater liner is made of titanium alloy, whether the thickness is thick enough, whether the welding process is advanced and reliable, whether the quality of enamel glaze is guaranteed, and whether the coating and sintering process is advanced.
Jingui special care system is super antifouling and has long service life. A.O. Smith innovated and developed Jingui special care heating rod, which made a breakthrough in anti-corrosion and anti-pollution ability. Jingui special protection system, which consists of Jingui inner container and American strong anode rod, improves the overall quality of water heater to a better level and ensures long-term and efficient operation! Professional welding technology and excellent surface coating materials.
Adopt high-speed welding equipment assembly line and professional welding technology imported from the United States. PLC automatic gas shielded welding ensures the first pass rate, strictly eliminates false welding, and the weld performance is 100% sealed, which is well combined with coating penetration. It is made by adding special materials into special glaze with special formula, which is much better than ordinary enamel materials in water resistance and is also effective in rust prevention, corrosion prevention and scale prevention. Leading coating process
The coating is sprayed evenly, and after baking at 870 degrees Celsius, it is closely attached, with higher fastness, effective rust prevention and corrosion prevention. Pressure-bearing performance of super-strong inner container of Jingui special care heating rod. It is not easy to absorb impurities, which ensures that the heating rod is effectively anti-corrosive and anti-fouling, and maintains long-term efficient heating operation.
Effectively prevent the consumption of anode rods, thus protecting the lining for a longer time and prolonging the service life of the lining. American anti-dry burning design, even if the water is cut off, the heating rod will not burn out, and the service life is longer. American super-long design, larger heating area and high heating efficiency.
American internal thread installation, small contact surface with the liner, excellent sealing performance, ensuring the overall bearing capacity of the liner. American structure and unique low-position submerged installation make the cold water at the bottom of the water tank heat up rapidly, which greatly improves the recovery rate of hot water during use. ?
According to the American pressure-bearing standard of 2MPa, it is about 67% higher than the pressure-bearing design standard of water heaters in China and Europe. Under the strict "UL" standard in the United States, it has passed 65438+ ten thousand life tests. Each batch of liners has passed the pressure test of 2 1 kg/cm2, which can ensure the safety even if the temperature changes.
2) electric heating tube
The quality of electric heating tube is directly related to the safety of water heater. Therefore, when buying a water heater, we should not only care about the power of the electric heating tube, but also care about the electrical performance of the electric heating tube.
3) Magnesium anode rod (magnesium rod)
Magnesium is the metal with the lowest potential in electrochemical sequence, and it is physiologically nontoxic. Therefore, it is very ideal to make magnesium rod protective lining. The size of magnesium rod is directly related to the length of time to protect the inner container and the size of the protection effect. The bigger the magnesium rod, the better the protection effect and the longer the protection time.
4) Selection of insulation layer
The insulation layer of water heater directly affects the insulation performance of water heater. The main factor that determines the thermal insulation performance is the thermal insulation material.
And that thickness of the insulate layer. At present, the commonly used thermal insulation materials are: sponge, foam plastic, polyurethane foam and so on. Among these thermal insulation materials, polyurethane foam has the best thermal insulation performance, followed by foamed plastics. Sponge is generally only used as an auxiliary insulation material for water heaters, because it is difficult to fit closely with water heaters.
5) Selection of backflow prevention technology
In order to prevent electric water heaters from dry burning due to external water cut-off, all electric water heaters adopt backflow prevention technology. At present, the backflow prevention technology adopted by most manufacturers is realized by using safety valves with check function (commonly known as spool safety valves).
However, there are some problems in this technology: when the water heater works, some water will leak into the pipeline through the internal leakage function of the valve core, which is easy to make the pipeline of the water heater vibrate locally and make abnormal noise; At the same time, there is a potential safety hazard, that is, the internal leakage function of the safety valve often fails due to scale blockage, thus increasing the working pressure of the inner container and reducing the service life of the water heater.
6) Anti-electricity wall
The important function of the electricity-proof wall is to isolate the charged current in the water caused by the leakage of the heating tube in the heating liner, and to isolate the harm of the charged ground wire or water pipe to the shower.
Water heater with electricity-proof wall
Anti-electric wall technology is a patented technology of water heater safety, which is based on the comprehensive application of pipeline design technology, raw material technology and electric resistance technology. It mainly includes the following aspects: internal anti-electricity design, the selection and installation of heating pipes, magnesium rods, temperature controllers and other parts in the water heater are all specially insulated to ensure that the electricity in the water will not leak.
External anti-electricity design The shell, mixing valve, nozzle and hose of the water heater have undergone special anti-electricity treatment to ensure the insulation of the contact part with the human body.
Anti-electricity design of pipeline The pipeline of water heater adopts raw materials with special formula, and damping technology is applied in the structural design of pipeline, even if the water in the water heater is charged; It can also ensure the safety of people taking a bath. At present, only Haier, Ding Xin and Shuaikang in China have their own patented anti-electricity wall technology.
Mounting point
1) wall-mounted household water heater
(1) installation position: ensure that the wall can bear twice the weight of the water heater filled with water, and the fixed parts are installed firmly; Ensure that the water heater has room for maintenance.
(2) Water pipe connection: the water inlet (blue cap) of the water heater is connected with a pressure reducing valve, and the hot water pipe is connected with the water outlet (red cap). Raw material belt should be used at the pipeline joint to prevent water leakage, and the safety valve should not be screwed too tightly to prevent damage. If the water pressure in the inlet pipe is close to the pressure relief value of the safety valve, a pressure relief valve should be installed on the inlet pipe far away from the water heater.
Wall-mounted household water heater
(3) Power supply: ensure that the water heater is reliably grounded. The sockets used must be reliably grounded.
(4) Water filling: After all pipes are connected, turn on the faucet or valve, and then turn on hot water to fill the water heater and discharge air until water flows out from the hot water faucet, indicating that the water is full. Turn off the hot water tap and check all the joints for water leakage. If there is water leakage, empty the water tank, repair the leaking joint and refill the water heater.
2) Floor electric water heater
(1) Installation location
A. the water heater must be installed on a horizontal surface.
B. Install the water heater near the floor drain. The installation position of the water heater should ensure that the water leaked from the water heater or its connection will not cause damage to the adjacent area or the lower layer of the structure; If the above requirements cannot be met, a suitable water tray should be installed under the water heater. This water tray should have sides, at least 5 cm deep, its length and width should be at least 5 cm larger than the diameter of the water heater, and it should be connected to a suitable floor drain with pipes.
C the installation position of the water heater should be close to the place where hot water is mainly used and the power supply.
Water heaters should not be installed in places where ice may freeze.
(2) Water pipe connection: ensure that the pipe is watertight. If the cold water supply pipeline of the building has backflow preventer, check valve or water meter with check valve, the water supply expansion mechanism must be installed in the hot water system. When multiple water heaters are connected in parallel, the branch pipes of all water heaters must have the same size and length to ensure water flow balance.
(3) Where the water quality is hard, it is recommended to soften the water.
(4) Electrical: there is electrical grounding to reduce the risk of electric shock or possible electric shock. The water heater should be reliably grounded. Every commercial electric water heater should be equipped with an air switch with overload protection and leakage protection. Don't turn on the electricity until the water heater is filled with water.
(5) Water filling: After all the pipes are connected, turn on the faucet or valve, then turn on hot water to fill the water heater, and exhaust until there is water flowing out of the hot water faucet, indicating that the water is full. Turn off the hot water tap and check all the joints for water leakage. If there is water leakage, empty the water tank, repair the leaking joint and refill the water heater.
use
Energy saving method
1. For families who don't use hot water often, this means that they only use hot water to take a bath at least once every two days, and the frequency of use is not high. For this kind of family, we suggest to start heating with electricity one hour before taking a shower, turn it off after taking a shower, and keep the water heater off at ordinary times. In this way, the power consumption can be kept at a minimum, thus saving the electricity bill to the greatest extent.
2. For families who use the water heater every day, only for bathing, and the amount of hot water is not large, we suggest turning on the water heater for heating about one hour before bathing. If you take a bath at a relatively fixed time every day, you can buy a computer-controlled water heater product and use its timed heating function to complete it. Turn off the water heater after taking a bath.
3. For frequent use (generally, the kitchen and bathroom use a water heater at the same time, and hot water is used for cooking, washing dishes and bathing), we suggest that the water heater is always on, and the temperature of hot water can be adjusted according to the frequency of use and the amount of hot water used. In the case of small usage, the temperature can be lowered a little, and in the case of large usage, the temperature can be raised a little.
4. In the case of continuous use (generally refers to the use of commercial users such as hair salons), you can only keep the water heater on all the time, but you can also adjust the hot water temperature appropriately according to the number of guests. So as to save electricity fee to the maximum extent.
It is normal for the safety valve to drip when heating.
When the electric water heater is heated, the safety valve sometimes drops a small amount of water, which is a normal phenomenon. Because when the machine is heated, the water expands, but the capacity of the inner container remains the same, so the pressure increases. At this time, when the safety valve detects that the pressure is increasing, it automatically starts to release water and pressure, so we have the phenomenon of dripping water. Users can't adjust or block the pressure relief hole of the safety valve at will, but they can connect a plastic hose to lead the dripping water to the floor drain.
Misunderstanding of safe use
1, misunderstanding 1
Qualified water heater = safe bathing
With the maturity of electric water heater technology, most manufacturers of electric water heaters have completely solved the problem of electricity safety of water heaters. Moreover, users also agree with this statement that the products of electric water heaters are qualified and there will be no worries about taking a bath. However, electric shock accidents still occur frequently, and users can't help asking: Is a qualified water heater really safe? What caused these accidents?
According to experts, the standard of electric water heaters in China is equivalent to the IEC (International Electrotechnical Commission) standard in Europe, which requires that the grounding wire in users' homes must be good. In our country, due to historical reasons, the grounding system of many buildings is not good or even missing, such as wrong decoration and wiring, aging lines, private wiring, using inferior switch sockets, using water pipes as grounding wires and so on. , which may cause the grounding wire to be charged, thus causing an electric shock accident. For this, the user does not know. In this use environment, even if the water heater passes the IEC test, the safety of bathing cannot be guaranteed.
2. Myth 2
The use of leakage protector can fully protect the safety of bathing.
To explain this misunderstanding, we must first understand the working principle of the leakage protector: the live wire and the zero wire in the power cord enter the water heater through the leakage protector. When the water heater is in working condition, once the residual action current is generated by the leakage of the internal electrical equipment, the leakage protector can cut off the power supply within 0. 1 second to prevent the current from continuing to enter the water heater.
However, the power cord of the water heater also contains grounding wire. Theoretically, a ground wire is also set to ensure the safety of electricity use. However, if the grounding is unreliable, the live wire and ground wire are connected reversely during decoration, the line is aging, etc., and the leakage protector cannot cut off the ground wire, then the current may directly drive the water heater through the ground wire, and the electric shock accident is inevitable.
Problems that high-level users should pay attention to.
Modern residential buildings are developing to high-rise buildings. Due to the lack of strict regulations on the water supply system of high-rise residential buildings, a common problem is that the water supply pressure is too high, which often causes the water heater to drip when heating or at night.
Because high-rise residential buildings have secondary water supply, the water supply pressure is generally too high. Excessive water pressure will increase the pressure in the tank, resulting in the tank always in a high pressure state, which will seriously affect the service life of the water heater. Therefore, it is necessary to ensure that the safety valve can be in normal working condition. Users are not allowed to adjust or block the water outlet of the safety valve at will. It is best to connect directly to the floor drain with a plastic hose or the like, so as to ensure that the pressure of the water heater liner is always within the rated pressure.
Correct treatment method after scaling.
In the process of using the water heater, scale will be produced, because the water contains some impurities and water-soluble substances, such as Ca(HCO3)2 and Mg(HCO3)2. These substances will react chemically at high temperature to produce some water-insoluble substances (CaCO3 MgCO3 _ 3, etc.). ), and then they will precipitate, producing what we call scale.
These scales adhere to the heating pipe, which leads to the decrease of heating efficiency. Scale is deposited in the inner container, resulting in a decrease in the capacity of the inner container and the mixing of water. Therefore, users should regularly remove the dirt in the water tank according to the local water quality to keep the water tank clean. Here is a simple way to clean the tank: first, make sure the water in the water heater is cold. If it is hot water, pay attention to safety to prevent burns.
First, close the valve on the water inlet pipe of the water heater, disconnect the pipeline connecting the water outlet pipe, then disconnect the valves (including safety valves) of the water inlet pipe and the water inlet pipe, and connect the water inlet pipe to the water outlet pipe. One end of the water inlet pipe is empty, and the bottom is connected with sewage by a basin or bucket.
Then open the valve on the water inlet pipe, water enters the machine from the water outlet pipe, and then sewage flows out from the water inlet pipe, which is washed several times repeatedly, and then the pipe is reinstalled and filled with water as before. This is a simple way to clean the inner container. If the dirt is serious, it needs to be cleaned more thoroughly.
development prospect
The data of the first half of 20 13 shows that the growth momentum of electric water heaters is good, and both the retail volume and retail sales have achieved double-digit growth. With the arrival of the peak sales season, there is still room for improvement in performance. It is worth noting that the sales growth of electric water heaters is obviously higher than the sales volume, which is realized by increasing the unit price of products, and the same situation also appears in the gas water heater market.
In terms of market share, although it was not included in the new round of energy-saving subsidies for home appliances that ended in June, electric water heaters still occupy the mainstream of the market. According to the monitoring data of Zhongyikang, in the first half of this year, the retail volume of electric water storage instant electric water heaters accounted for 60% of the market share, much higher than that of gas water heaters.
Reference source: Baidu Encyclopedia: Storage Water Heater