Choosing a running electric water heater

Hot water and today is not found in every house or apartment. You can talk a lot about what is to blame - the old heating system or the impossibility of leading the line. It is much easier to turn for help to the possibilities of technical progress. An excellent way out of this situation is the instantaneous electric water heater, which is in great demand.

How a flow boiler works

The concept of functioning of the device could not be more tempting: just plug it into the outlet in order to immediately get hot water at the outlet. The advantage is obvious: you will not have to wait a certain time to take a shower or wash the dishes.

Such a bonus is due to the technical capabilities: in such a technique a very powerful heating element is installed, which is able to heat water immediately, even if it goes under a certain pressure. The unit has a special heat exchanger - the water in it is heated to 40-60 degrees. At least that's what the ad device tells us. And what happens in practice?

Flow heater device

Advantages of an instantaneous electric heater in practice

The choice of model instantaneous water heater depends from powerwhich satisfies certain needs. The range presented in such devices power ranges from 5-27 kW. For example, in order to wash the dishes or take shower procedures, there is enough equipment of only 8 kW.

The main bonus is obvious - the rate at which the consumer receives hot water. However, here again, there is a load on the grid. Wiring for such needs should only qualified electricians. And sometimes this equipment can not be connected to simple wiring - they should be a separate cable (especially if the plans - frequent bathing, in this case, you will need a 380 V network).

Other unit bonuses are his compact size. For an apartment of small size, such a technique is just right - the device can be easily placed in a corner of the room where it will not be noticeable. There is a difference in comparison with the large tank of the cumulative option, for the placement of which you need to think ahead about the place.

Bribes and the fact that with this type of heating scale on the heating element simply does not have time to postpone. The technique is insensitive to hard water. This circumstance eliminates the need for maintenance.

The following applications can be distinguished:

• in case of unavailability of sources of hot water supply;
• as a backup tool (if there was a short-term disconnection of hot water);
• to meet the needs of hot water at construction sites.

Device flaws

For many users, problems begin at the design stage of placing such a device in an apartment. First of all, it turns out that it will be necessary to completely replace all wiringthat is not for everyone on the budget. There are other disadvantages, which are even more than enthusiastic about the speed of the device.

1. A primitive model requires a minimum power of 5 kW, but it can only provide it with a weak stream of water. In order to wash under a normal shower, you have to choose a device with a capacity of two times more. The disadvantage is that far from each village the network will produce more than 3 kW (if, for example, the consumer wants to purchase a unit for the dacha).
2. By the way, it is necessary to change not only the wiring, but the whole fittings - for example, cheap Chinese sockets get very hot from running devices and even start to melt.
   
3. An instant increase in temperature can be fraught with burns. This indicates the need to select equipment with the ability precise regulationThat will help avoid bathing under boiling water.
4. Not too good condition of the plumbing system (when water with impurities flows from the tap) may not have the best effect on the device - it will quickly become clogged with various impurities, in this case even the filter will not save. Since in most cases the failed parts cannot be replaced, the unit will have to be thrown out.
5. Even a single joint of copper and aluminum wiring is dangerous for an apartment.and doubly for the device. Even without special knowledge in the field of physics, it can be assumed that galvanic couple. This is fraught with the destruction of the wires and the inevitable fire.
6. You should not expect that even with an expensive and powerful device of such a plan you will be able to simultaneously wash the dishes in one room and take a shower in another. We'll have to choose one thing.
7. It is not recommended to buy such a device for regular use, especially if the counter is designed for 10-16 A. All that can be done to install a “protochnik” of 3 kW of power is to wash the dishes (the costs will not pay for themselves).

Combined version

The use of instantaneous water heaters is, of course, a trump card. However, its operation should seriously prepare for all the above points. It is best to use a similar device complete with a cumulative boiler. This approach will allow you to be fully armed in all situations. And even better to have a tank-hydroaccumulator, which is not afraid of even turning off the water.

Of course, for the apartment should make a separate branch from the counter. The ideal solution would be to change the wiring to the copper version.If the future user is not afraid of all these moments, then he should be puzzled by the following main question: how to choose a flowing electric water heater so that it fully meets all the requirements? And here we need to look at the proposals from manufacturers.

Electric heater selection rules

Which model to choose? It all depends on future needs and, of course, the budget of the future owner. For example, models with a threshold of 2.5-5 kW offer brands ELECTROLUX or ATMOR. Options allow you to use them without major repairs with wiring. However, to a greater degree all devices of this class do not have sufficient jet pressure. If the user tries to add it manually, the water simply stops heating.

That is why it will be relevant to pay attention to those market proposals that immediately adapted for the shower - as, for example, PEVN-220-3,5D, in which the appropriate hose and nozzle are already attached. With a power of 3.5 kW, the device will operate in a normal network with a voltage of 220 volts, without taking up much space. Lightweight and compact unit quietly transferred to any part of the house where it is needed at the moment.

Flowing water heater PEVN-220-3,5D

Termek's options are also good, which, like the previous one, works in the range of 5-8 kW. Here it is important to remember the main rule - to turn to a professional electrician who will do everything so that using the device brings only pleasure, not trouble.

Finally have powerful devices from the same THERMEX, ELECTROLUX, and also LG and Bosh (working from 10 to 15 kW), but they are very demanding to the conditions of operation. First of all, the wiring in the house should withstand a load of up to 20 kW, and the network should be at least 380 V. Of course, only professional firms should do this installation, and the result of the work is confirmed by the requirements of the relevant authorities (first of all, the fire department).

In conventional apartments, such devices are not installed, so most often powerful options are installed in organizations.

So, a flowing electric water heater is a “magic wand” that can compensate for the shortcomings for a short time due to the lack of hot water. He is able to provide only one point of water pumping - and which one, the user must decide if he decides to purchase such a device.