If you were led to the supermarket of household appliances by a passionate desire to acquire your own source of hot water so that you no longer depend on the unpredictable whims of utilities, then the first device that will attract your attention will be the boiler…
Lyrical digression: about boilers in general and in particular
Let’s make a reservation right away: the full name of this device is a wall-mounted electric storage boiler of a closed type. But this representative of household appliances today is so popular that most buyers who are not particularly versed in the classification of water heaters call it simply a boiler, omitting all other “regalia”.
Meanwhile, all over the world, this word, which is derived from the English “boiler”, that is, “boiler”, means any unit that can heat water for any purpose. However, in our country, the boiler and boiler have different functions: the first is for heating, and the second is for providing hot water. A large family of boilers includes devices:
- Working on any energy sources, starting with coal and firewood (titans) and ending with “advanced” models that can be connected to solar panels. But the most popular today are electric and gas boilers;
- Flow-through type, heating water as it arrives (well-known gas columns), and storage tanks, accumulating a certain amount of water and heating it gradually;
- In turn, storage boilers can be mounted, designed for wall mounting and characterized by more compact dimensions and low weight, and floor, with a volume of more than 200 l;
- And finally, drives can be open or closed.
An open type boiler is sometimes called a pressureless boiler since the pressure in its tank does not exceed atmospherically. Among the advantages – low weight, low cost, low heat loss. Of the drawbacks, it is significant that such a boiler can only be connected to one point of water intake, and for this reason, it is unlikely to suit the owner of a city apartment.
In addition to the family of boilers are indirect heating devices equipped, instead of a heating element, with a heat exchanger that connects to the heating system. Models of this type are used as additional equipment for the boiler.
Owners of cottages and houses located where there is no centralized water supply will be interested in bulk boilers, which are filled manually or with a hose, and, being a kind of symbiosis of a washstand, electric kettle, and thermos, they are able to supply their owners with uninterrupted hot water.
And now, when a brief excursion into the world of boilers is over, we will take a close look at our “protagonist” and tell about the advantages of mounted electric storage boilers of a closed type.
This device is not in vain won the sympathy of most consumers: in fact, in comparison with other types of water heaters, it has a number of advantages :
- Easy to install. For a gas heater, you need to draw up a package of documents and obtain permission from the relevant services. In addition, he will need an extractor fan to remove toxic combustion products. In the case of an electric boiler, all these problems disappear;
- Ability to work from a conventional outlet. Since the water in the storage boiler is heated gradually, its power does not exceed 2 kW. This drive compares favorably with its flowing counterpart, which, in order to quickly warm up the water flow, requires high power and appropriate wiring;
- Compactness. The outdoor boiler will need a special room, which makes it impossible to install it in the apartment of a multi-story building. The wall-mounted model takes up almost no space. It can be hung in the toilet, in the bathroom, in the kitchen – wherever there is a free section of a solid wall of the required area and where it is possible to connect to the water supply.
In addition, most modern devices can work both vertically and horizontally, which further expands the possibilities of their installation;
- Versatility. As already mentioned, non-pressure boilers can supply only one point with hot water. Closed models are devoid of this drawback, and are able to simultaneously provide hot water to all the taps in the apartment.
As always, there were some shortcomings. This is, first of all, a limited supply of hot water, which depends on the volume of the storage tank. The next minus is the long initial heating time, calculated in hours. The specific value, again, depends on the volume of the tank and even on the power of the heating elements.
The disadvantage can also be considered a lot of weight: in pressure boilers, the working pressure of 9 Bar is maintained, therefore, they need a durable tank made of stainless steel or steel with an enamel coating. A high price (in comparison with non-pressure plastic analogs) is also associated with this fact.
And one more thing: those who hope to use a closed boiler along the way as a reserve tank in case of water accidents will be disappointed, because in the absence of pressure there will be no water flow, and the knowledge that there is a tank full of water in the apartment is unlikely to serve you consolation.
Types of storage boilers
Closed-type devices differ significantly in price, which depends mainly on the type of heating element – TEN-a. Distinguish:
Boilers with a “wet” TEN-ohm, similar to a conventional boiler. It is immersed in water (therefore wet), and scale is gradually formed on it, which significantly reduces its service life. In addition, such a device requires regular maintenance related to cleaning and replacing the heating element. Among the advantages – lower cost;
Boilers with a “dry” heating element can function uninterruptedly for several years even in the absence of service, due to the fact that their heating element is in a special ceramic flask and does not come into contact with water, and if so, it is more durable. Such a boiler will cost about twice as much as its counterpart with a “wet” heating element.
Another important parameter is the volume of the boiler. It does not particularly affect the price, but the size of the amounts put in your electricity bills depends on it, so choose the device with the optimal volume. In general terms:
- For a family of two who prefers to use a shower, a model of 50 liters is enough;
- If the boiler has to provide four shower lovers with hot water, the best option is an 80-liter model;
- And those who cannot imagine life without a bathtub filled to the brim will need a 100-liter boiler, regardless of the number of users.
In general, models of 50 and 80 liters are the most popular, and in most cases, they can cope with their duties.
An important characteristic several years ago was the material from which the tank was made: it was believed that stainless steel was the best option since steel coated with enamel clearly lost to it in quality. But today, when there are additives that make the enamel more plastic and not prone to cracking, this parameter is not so important.
It remains to add that almost all modern boilers are equipped with two heating elements, can heat water up to 75 degrees, and are safe, easy to operate devices – all that is needed is to set the desired temperature and wait a bit. In the meantime, your boiler zealously heats the water, tell you about what it is.