Happened to my friend this story. On the eve of March 8 decided to make my wife a gift. And he bought the flowing water heater to a favorite on-off time hot water is not tormented with the coxae and woks. Called an electrician, he had to flap a separate power cord. Because the device is powerful enough - 5 kW. In general, showed an enviable activity. The hour has come "X", his wife proudly retired to the bath, and he pleased, to TV - to watch "lethal force". And then ... out of the bathroom - a terrible scream. The essence of the "message", omitting certain words and phrases was: "The water is cold, if I crane disguised so that the water was hot, runs such a weak trickle, I'm all in a lather and freeze. You - man, do something "... "Man" ran the service center. And what do you think he was told? It turns out that if the power flow heaters - 3,5 kW, then more than 3 liters per minute of hot water in any case you do not get. And to take a full, hot showers, need the power of 8 kW and above. Here's a story. What should I do? After all, instantaneous water heaters have successfully sold today, many companies tout their virtues, and they certainly are. Firstly, during a flow-through water heater, how much would you not keep the tap running, hot water will never end. Unlike storage water heaters that have hot water in the tank might end some time, it is quite possible (depending on tank volume), cold water flows. But the instantaneous heater will not happen ever. Secondly, compared with storage, instantaneous water heaters do the small size. Since they do not need a tank to store hot water. The main advantage of small instantaneous water heaters - their small size, now about the shortcomings of "protochnikov. I'm told the specialists, their disadvantages include a large one-time power consumption. And another thing: if a continuous flow heater to connect multiple points of water diversion, simply put, a few taps, hot water temperature will depend on how many points working simultaneously. Let me explain. Suppose your flowing water heater "divorced" on the kitchen faucet and bathroom. So, if you decide to take a shower, and your wife - to wash the dishes, then you have already domyvatsya cold water. Having been in several companies that sell water heaters, I realized: a lot of hot water, using the instantaneous water heaters, can only be if his power of 8 kW and above. So, this fun is available only to those homes where there is a three-phase electrical network. Alas, in the homes of old building with 16-ampere fuses heater with a capacity of more than 3,5 kW put simply impossible. And in homes with electric stoves and new homes where there are 40 - or 32-ampere meter, acceptable installation "protochnikov a capacity of 6 kW. What to do? Output, it turns out there is. To have hot water in the unique summer months when there is a preventive maintenance of central water supply shops offer a wide range of so-called small instantaneous water heaters operating on 220 V with a spread of power consumption from 1.5 to 8 kW. Thus, the small flow-through heaters can be divided into two groups: Pressure - instantaneous water heaters with no attachments, they are provided only entrance and exit for water. They are installed in the tower and "bred" for the whole apartment. It is very convenient, as in the period off the hot water you can not just take a shower, but use hot water from every faucet in the apartment. Switched on and off a water heater is automatically in response to water flow. Unconfined - instantaneous water heaters, equipped with its own shower head (it is included in the device) and working only as a soul. It is certainly convenient, say, in the country. But in an apartment, I think, a little strange when hanging in the bathroom beside two shower heads - one from an ordinary shower mixer, and a number of sticks "shower" water heater. Also, here, for example, that I was told at one service center. Cases are different ... As we have said, the small instantaneous water heaters with capacity of 3 to 6 kW can be used only in summer. And here's why. Recently, in the winter, came to the service center man. With the complaint, that water heater in the summer to work very well, and now, during the accident DH refuses to heat water. Like, you will make ... Popularity is due to him: in summer the temperature of cold water, "incoming" from the tap was +15 ° C. Its small flowing water heater power of 3,5 kW (Dt - 25 °, giving a 3 l / min) in the summer it is easy to "reheating" of another 25 °. Ie 15 ° + 25 ° = 40 ° C - is an appropriate temperature for washing. In winter, colder water at the tap, some degree 5. So: 5 ° + 25 ° = 30 ° C - under a water course you freeze. And the device itself has nothing to do with it, it works normally, it is not broke, just the climate we are. Here's how I commented on the situation in several firms. It turns out, the small instantaneous water heaters designed to warm countries in Asia and Africa. And there are no such differences between winter and summer temperature, and water temperature at the tap is always about +15 °. It should be only slightly "dogret. In this photo, well seen what's inside the small flow-through water heater firm Shtibel Eltron "Or another case. The client can sometimes be found independently. Without consulting with specialists, buying free-flow water heater. Moreover, it connects completely inappropriate manner. Let me explain. According to the instructions before you turn it on, you must first open the cold water tap. But for the "simplicity" of some of the craftsmen do so: untwists shower nozzle on a water heater, which is sold bundled with free-flow water heater, but instead to become a regular crane. And, without pausing to think, connect the device to the water system. Simply put, now the role of the mixer actually performs the water heater. But the fact is that this tank water heater is not designed for such pressure water. As a result, water heater breaks down. How do I vividly sketched this picture of the service center, "he swells and bursts. Represent! Meanwhile, all the instructions written in detail as to be connected device, so you do not have problems. Or here is very much an exotic example. It is known that the shower heads for the water heater needed from time to time to clear. In certain bath as showers were used, small instantaneous water heaters. Over time, holes shower nozzle clogged slices lime scale and dirt (the water we have, as you know, not the best). As a result, water heater is literally "squeezed" out of a hot water ... And in the end - is overheating and ... completely melted. The whole point is that the shower heads for low flow heaters have a very narrow aperture (compared to ordinary souls). And here's why. Small flowing water heater able to heat to desired temperature is not very large amounts of water. Therefore, the jet was stronger in the shower nozzle and provides for very small holes. Naturally, such mikrodyrochki hammered scum or debris much faster. What expert advice and service center? First. If you notice that the stream of water bubbling out of the shower nozzle flow heaters, became weaker, it (the attachment) must be cleaned. Moreover, we advise to do it regularly. Unscrew, clean or put in some time in the solution, removing the scum. Second. Buy heaters only in special shops or companies. For example, when I told these "incidents from the life of water heaters in the representation of the firm" Shtibel Eltron (Stiebel Eltron), there were very surprised. The fact that their brand-name devices is the fuse that, when water temperatures over 65 ° C, just off the device automatically. Therefore, it is not something that melts, and even can not overheat. What to choose? So, we spoke briefly about what you need to know before you go to the store to choose flowing water heater. To summarize. 1. Learn more, three-phase or additional wiring is required for instantaneous water heaters, which you liked. And refined in ZhEKe what do you have electrical equipment in the apartment. 2. Please specify at what capacity is selected flowing water heater. In other words, "to which" it is enough: only for washing hands and utensils, only then to take a shower or hot water will suffice for all these manipulations simultaneously. 3. Try asking: Who will install the device? Do I need to call a specialist with the firm (and, of course, how much will it cost) or it is not difficult to do yourself? 4. And, of course, by all means find out the warranty period and addresses and telephone service centers. In addition, harmless to wonder whether we have in the country of spare parts for your chosen instrument. And if there are not too lazy to specify how much it will cost. It happens that some kind of small but very important detalki arise in quite a rather big amount.
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