Electric water boiler — is a storage water heater check built-in heating element. Unlike flow-through water heaters, it requires certain time for the water to reach the set temperature.
Electric water boiler
The boiler is designed in such a way that it is able to keep water heated to a predetermined temperature for 22—24 hours. This effect is achieved thanks to reliable body thermal insulation. When the set temperature drops, the automation is activated, which resumes the heating process.
There are models with different volumes storage tank. The developers thought this moment dlI want to be able to choose the most appropriate option, depending on the number of residents and points of collection in the system. Household boilers are produced with a capacity from 10 to 250 l, but models with volume from 50 to 100 l.
A properly selected boiler will satisfy the need for heated water for all household needs of the family. The disadvantages of storage devices can be considered its rather long heating. However, with a reasonable and even use of heated water, this becomes hardly noticeable.
Content
Boiler device
Almost all boilers are arranged according to the same principle. Their only difference may be direct heating of water or indirect. In another way they are called water heaters with wet and dry heating element.
Schematic diagram of the boiler device
The figure shows an approximate design diagram of most boilers:
- Cold water inlet from the plumbing system.
- Temperature regulator.
- current suppressor.
- TEN - electric water heater.
- Fuse.
- Hot water outlet.
- Temperature sensor.
- Inner housing for heating the coolant.
- The thermal insulation layer is usually — from polyurethane foam.
- External enamelled case.
- Control lamp.
- Electrical cable with plug.
- Behind on onspring models of the appliance are equipped with brackets designed to withstand a water heater filled with water.
boilers, equipped dry heating element, heat up a little longer than with heating elementsohm direct heating, since this element is in a protective flask, hermetically sealed. But their advantage is that they TENot not scale is formed, and meansit will last longer. apparently This also explains the higher priceon on such models.
The wet heating element in the direct heating heater is located directly in the water, so it gets hot much faster. But the service life of such heating element much shorter than that closed from direct exposure to water.
The principle of operation of both one and the other model is the same:
- The inner tank is filled with tap water.
- Further required temperature is set.
- Water is heated to the specified temperature and the boiler automatically turns off.
- When heated water is used up, the tank is immediately replenished with cold water, and naturally, the temperature in the boiler decreases.
- This process is not remains unnoticed by the thermostat, so the heating is automatically switched on again.
Varieties of boilers by layout and materials of manufacture
Boiler location
Depending on the place where it is planned to place the boiler, its model is also selected. — vertical or horizontal mounting.
Horizontal arrangement of the boiler
In horizontal models, pipes can be connected from below or from the left side. Boilers, located horizontally, quickly heat up, and, due to their compactness, do not take up a large area on the wall. However, their location somewhat reduces their performance.
"Classic" vertical installation scheme
Vertical options, depending on volume and, accordingly, the size of the case, can be floor or wall. Pipes are brought to wall models from below, and to floor models from above or from the side.
"Lower" piping
Boiler shape
Electric water heaters can be divided into flat and round. Each of them has both minuses and pluses.
Boilers of the usual cylindrical shape
For example, round models are characterized as quickly heating up and maintaining the set temperature well. also about them you can saythat they are easy to operate and maintain. The only drawback of round water heaters is their dimensions, so they are difficult to place in a room with a small area.
More compact "flat" model
The compact size of flat models can be safely attributed to its advantages, as it can be placed very well even in a small bathroom. Since the design of the water heater is compact, not one, but two water tanks are located inside the case. The disadvantage of such devices can be considered a larger number of welds, which increase the risk of corrosion.
Water connection system
It is necessary to determine the installation location of the boiler, as there are closed and open versions of water heater systems.
Closed circuit
Closed models are connected to the water supply, and they can provide several points of water intake in the apartment with heated water. Since in such a system the water is always under pressure, and its value should not exceed the permissible norms, a special safety valve is installed in these boilers. valve.
Open, flow-through connection system
Boilers with an open system are installed in the place where the intake point is located, for example, near kitchen sinks. However, you need to remember that this model requires a special mixer.
Internal coating
The surface of the inner tank of the boiler can be coated glass porcelain or enamel, or the tank is completely made of stainless steel. To decide which tank is better and more practical, you need to find out the characteristics of each of them.
- Enamel coating has its advantages, at least in that it does not enter into chemical reactions with other substances, so water after heating will be supplied without impurities. Such a coating has justified itself in many years of use. — we can recall the practicality of enamelware.
Enamelled boiler tanks are necessarily equipped with a magnesium anode, which makes the water softer, otherwise in the process of constant heating and action tough water on the enamel may appear microcracks.
- The stainless steel tank performs well even when tough water, or with a high content of chlorine in it. In some models, the tank is made of high quality steel and does not even require the installation of a magnesium anode. Such steel has the highest strength characteristics. — it does not deform and can withstand high temperatures without damage. Naturally, the cost of a boiler with a stainless steel tank is much higher than other models.
- Well-proven tanks with glass-porcelain coating — antibacterial and environmentally friendly, so the water in contact with them does not change the smell and taste. Glass porcelain just like enamel, it does not react to any chemicals and does not react with them. Unlike enamel, this material does not crack or flake off the surface, even when exposed to high temperatures.
Anti-corrosion protection
The less in boiler room tank joints and seams of the material from which it is made, the higher its protection against corrosion. More one element that protects the tank from corrosive formations is the magnesium anode. This elemeNT BPThe name needs to be replaced from time to time. Instead, an inert anode is sometimes installed; it lasts a longer period. True, this makes the boiler more expensive.
Magnesium anode of electric boiler
How to choose the best electric boiler
When choosing an electric water heater for your home, you need to pay special attention to some points.
- So that the heated water is not "deficit", you need to choose the boiler of the desired volume, you can even with a small margin.
- You should determine in advance the place of its installation, so as not to be mistaken with the size and system.
- Based on the data of technical documentation, choose the most acceptable material for coating the surface of the inner tank.
- Be sure to check the quality of the thermal insulation of the boiler.
- The data sheet must contain information about the degree and type of protection against corrosion.
- Naturally, it is useful to read reviews about different models of boilers from their owners in advance. There you can learn a lot of information about the practical application of the device, its operation, ease of use, organization after-sales service specific brand.
Price
The price of these water-heating electrical appliances is set depending on their parameters and the materials used for their manufacture. So, the cost is directly affected by:
- coating or material of the inner tank;
- useful volume tank;
- power and performance of the unit;
- equipment convenient monitoring and control system, built-in protection,
- "authority" manufacturer electric heaters.
A small video tutorial on how to install an electric water boiler
To date the stores offer a large selection of different models of electric boilers. Of these, it is quite possible to choose the one that will match everyone buyer's requirements. The electric boiler becomes an indispensable assistant, especially for those buildings where there is no way to conduct gas, for example, for country houses, or for apartments located in areas where hot water supply is unstable.
