Summer is the very time when I want to rinse under the jet of cool (but not cold!) Water. Overview of the water heaters market for apartments and cottages.
The accumulating water heater of the economy class is controlled by only one handle
Cumulative floor water heater
Flowing water heater compact and fits well in the interior of almost any bathroom
The flowing water heater with spiral heating elements is suitable for water with high rigidity - helix when heated itself is freed from scale. Spirals are laid in vertical sections of the channels "flasks" made of polymer reinforced material
Horizontal accumulative water heaters are indispensable in the cramped conditions of the bathroom
Installation of a "serious" water heater should trust a professional
Hidden in the cabinet under the kitchen sink compact water heater "Always ready!" will provide you with hot water, only it will disappear from the water supply
Place the water heater can be under the sink
In addition to cylindrical and rectangular water heaters, there are also such oval
The thoughtful design of the modern water heater allows you to enter it in almost any interior.
It is clear that the very good time when I want to rush under the jet of cool (but not cold!) Water, at least two times a day. But it was at this time that the city's inhabitants will suggest a regular attack, the disconnection of hot water.
No hot water - and even cry: you will rinse you when you want to wash the dishes. Ikak only this attack rolls us out, we actively begin to look for a way to warm the water. You can, of course, do it with a tried in a saucepan or kettle. And, tormenting and burning, carry them out of the kitchen in the bathroom and back. But, a couple of times, we, of course, we remember that there is a more civilized and convenient to use the water heater.
Market of household water heaters
ORN is offered both known and not very well-known firms, foreign and domestic. In total, there are more than 20 companies in this market, each of which offers 4-7 series of water heaters, and already in each series ... However, it is, this mathematics! Just call the largest manufacturers. This is Stiebel Eltron, Vaillant, Siemens and UniTherm (Germany), Polaris and Wester (United Kingdom), Ariston, Isea, Lorenzi Vasco (Italy), Osko (Norway), Evan and Real "(Russia). Prices fluctuate in the widest limits - from 1000 rubles. up to 2000.
Electric water heaters are made to divide into two large groups: flow and accumulative (capacitive). Soda side, they are a similar square or cylindrical container, inside which the heating element is hiding, and the adjustment knobs are located on the front panel. Solid side, not similar: Accumulative water heaters are always large, because inside the case, the container is hidden for the accumulation of hot water supply (from where and the name), flowing is much more compact. But the main difference is in the method of heating and power consumed.
Flowing water heaters
Flowing electrical heaters (PEVN) are designed to quickly increase the water temperature in the process of its flow through the heat exchanger (a thin layer is heated, washing the heating element - where and the high speed process). Do not have containers for storing heated water. The required condition for their operation is the presence of cold water supply (the heating element is rareered to a high temperature and must be constantly cooling). The simplest example of such a heater-sold to Soviet times the device attached directly to the crane of the mixer with a rubber tube (the current "charm" bilas is healthy!).Design of heaters
In principle, the device consists of a so-called bulb of a small volume with holes (more precisely, fittings) for the input and outlet of water and the heating element installed inside it, ishing that water and heats up. The material of the flask and the heating element can be the most different.
Evan's office is all classically simply: the flask is made of 4mm thick steel and is equipped with an anti-corrosion powder-polymer coating from the inside and outside. Used Ten from TherMowatt (Merloni, Italy Concern), made of stainless steel. IZA this "simplicity" is the resource of the continuous operation of 100,000 hours, guaranteed by the manufacturer.
Opening the lid of the "simple" water heater of the company POLARIS, you will see the flask from the material resembling plastic. In fact, the flask, of course, is not plastic, it is made of a special composite material (something like pressed ceramics with reinforcement). Inside such a flask there is a TEN with a copper spraying, according to the company, it serves longer than the usual one.
ARISTON, STIEBEL ELTRON and UNITHERM make flasks for their water heaters only from copper. Such a flask withstands pressure to 20thm. Inside it is set 1 (in more advanced models - from 2 to 4) a copper tonner and lives longer, and water warms faster. UstieBel Eltron, the Tan have a rather unusual form, they are made in the form of a spring. For what? The company's experts believe that, expanding when heated (the movement is vertically, horizontally and spirals), the spiral tang himself "shakes" from himself.
The unusual shape is distinguished by a flask in some PEVNs at once four firms - Siemens, Unitherm, Stiebel Eltron and Vaillant. True, the flask can be called with a large tension, it is a large flat "box" with rounded edges made of reinforced polymer material. The canal was laid inside the zigzag, along which water moves. Spiral heating elements are installed on the channels of the channel, which, when passing through them, the current is highlighted in the washes of their water. The material of the spirals from all manufacturers its own composition is not disclosed. Water heaters of this type as it is not better suited for water with high rigidity (but not exempted) - a spiral when heated, as already mentioned, freed from scale.
Siemens generally abandoned the flask and produces water heaters with a spiral copper tube, along which the copper tan is soldered outside. On this tube and flows water. Ten heats the walls of the tube, and the water is heated from them. According to specialists of the company, such a design, firstly, eliminates the direct contact of water with the heater, and secondly, ensures a uniform temperature distribution (due to the high thermal conductivity of copper) and, thirdly, practically eliminates the appearance of scale on bean.
Pavn Management
Let's start with the fact that all PEVRs warm water in them to a certain number of degrees. This value depends not only on the power of the heater, but also on the size of the flow, as well as from the oscillations of the supply voltage. You can influence the value of DT in two ways: increasing (reducing) the stream passing through the water device or increasing (reducing) the heater power. How is it implemented constructively? For example, PEVN from Polaris is implemented by 4 structures:- Without regulators on the case. Adjustment is performed using an additional valve installed in front of the PEVN (model VEGA P 3,5kW- $ 36.5);
- On the housing there is a private regulator of water duct (model VEGA T 3,5kW- $ 40);
- The case has a three-position power regulator (1; 2 and 3.5 kW). Adjusting the flow - as in the first case (model VEGA S 5,5kW- $ 50);
- Both regulators are placed on the housing (VEGA TS 5,5KW model - $ 54).
Must warn that the PEVN of this class can be used exclusively with cranes and shower nozzles supplied in the kit - they provide the optimal flow of water with a minimum protocol. In addition, on such devices there are two-way switches "Winter" - "Summer" ("Winter" - the consumption is minimal, since the temperature of the original water is low, "summer" - consumption above).
How and where to install the water heater in the bathroom?
The first thing to pay attention to is the degree of electrical safety of IP devices (IP International Protection Class is expressed by two digits).
First digit - protection against contacts or ingress of foreign bodies:
0- protection is missing;
1- Protection against accidental contact of a large body surface with current-time parts. There is no protection against deliberate access to these parts. Protection against falling out of foreign solids with a diameter of at least 52.5 mm;
2- protection against the possibility of contacting the fingers with current-handing parts and foreign solids with a diameter of at least 12.5 mm;
3- protection against contact tool, wire or other similar bodies, the diameter of which exceeds 2.5mm.
The second digital water protection:
0- protection is missing;
1- protection against droplets of condensed water, falling vertically on the shell;
2- protection against water drops falling on the shell at an angle of no more than 15 to vertical;
3- protection against rain, the drops of which fall on the shell at an angle of no more than 60 to the vertical;
4- protection against splashes of water falling on the sheath of the water heater at any angle;
5- protection against water jets falling from all directions.
Most often, water heaters have IP24 or IP25 protection. This means that the water heater with the designation IP24 is protected from water splashes. It can be installed in a 2-volume zone limited by a vertical surface that runs along the side of a bath or a shower pallet, and a vertical surface located at a distance of 60 cm from it parallel to it). The Avodonaheater with IP25 is protected from water jets. It can be installed in zone 1- volume limited by a vertical surface going along the side of a bath or a shower pallet.
The most powerful PEVR (5.5 and 7kW), where 2Than is installed, a two-block power switch appears. It allows you to manually enable the first or second TEN or both at the same time (GAMMA 5.5KW / OMEGA 7kW from Polaris- $ 65 / $ 83; UDH13-24 from Unitherm has 4 power uploads).
Control in such devices, as a rule, hydraulic. This is a kind of pressure relay: barely enabled in the water heater, the ejector device has a vacuum created in the relay, at the expense of which the valve is drawn, closure electrocontacts (all the power of the device is turned on at once). Closed the crane lines- Contacts open. If there is no sufficient water pressure (at least 0.25 or 0.33atm, depending on the manufacturer), the device simply will not turn on. The value of the values of the duct lies within 4-4.5l / min.
All the problems of the power adjustment and determining the water temperature at the output are removed with the acquisition of an electronically controlled PEV (series DE 18/21/24/27505 from Siemens - from $ 405 to $ 691; DHC-E8-10 series, DHE18-27 series from Stiebel Eltron- from $ 405 to $ 710; UDE Series from UnitHerm - from 230 to 490; Ved Classic and Exclusiv series from Vaillant - from 450 to 690). Your conclusion is to set the desired temperature and open the crane to the required duct. The device itself will adjust the heating according to the indications of the temperature sensor of the outgoing water with an accuracy of 0.5 ° C, variably varying the power. How? The PEVR has 5 heating elements of different power, and it itself chooses that it turns on, one or more, and includes exactly as much as necessary to heat the water to a given temperature under this protocol. The electronic unit eliminates the PEVN and from the effect of voltage fluctuations in the network. True, the water heater will cost such functions more than the usual approximately $ 200. More advanced models appears a remote control panel, a fully duplicate remote control on the instrument itself. The remote remote control can be safely taken with me, for example, in a shower cabin, placing the PEVN itself beyond (Ved Classic and Exclusiv series from Vaillant; DHC-E8-10 series, DHE18-27OT STIEBEL ELTRON).
The flowing heaters with power up to 8kW are considered household and because they are usually single-phase. More powerful PEVN - from 12 to 27kvt, all manufacturers are only three-phase (380V).
Cumulative water heaters
The accumulative electrical heater (NEVN) warms up a certain amount of water and automatically maintains its temperature at the set level. Works on the principle of thermos heated. It is a heat insulated container with a heating element (TEN) inside and facing from the outside. In terms of capacity (it is often called tank), household water heaters are taken to divide on the devices of small (5-15 liters), medium (30-150l) and large (160-1000l) volume. Small and medium are manufactured by mounted, large outdoor.How to deal with screaming?
- Do not lift the heating temperature above 55-60s- and the chance to scream less, and the device will work longer. But even with this approach, before the end of the warranty period, a specialist for verification should be called. It will determine the rate of formation of scale and will give a forecast - with which periodicity it may be necessary to clean;
- Install a protective filter softener based on ion exchange resins that reduce water rigidity. It is always a fairly bulk device, to install which it is necessary to be a very significant place (in more detail about softener filters and water treatment systems, you can read in the article "Clean water for the cottage");
- Apply a magnetic converter of water (MPV). This is a compact device, which is a standard pipe made of ferromagnetic material (steel 20 with zinc coating), inside has very strong permanent magnets. It is mounted in the tip of the water pipe once and permanently (the performance is 0.1 to 0.9m3 / h). Such a MPV, for example, from the company "Magnetic Water Systems" will cost $ 90.
Tanks for small PEVR can be made from polypropylene, but more often they are made of copper. The tanks are more made from steel as usual and stainless. For the first case, the inner surface of the flask is supplied with a special anti-corrosion coating. Saying the firm's secrets of this coverage. Moreover, the warranty period for the water heater strongly depends on its composition. For example, Ariston on its 15- and 30-liter PEVUs with "ordinary" enamel gives 3 years warranty, and with titanium-7 years. Stainless steel tanks in any coating do not need and are the most durable. If enamel may have proscure defects or crack with a thermal expansion of the tank, then nothing like that does not happen with the "stainless steel". In addition, the "stainless steel" tank is the only salvation if water has an increased level of acidity. Iinosten (Ariston) and domestic ("Real") producers producers from "stainless steel" 7 years warranty. UFIRM POLARIS Warranty period on tanks from the "stainless steel" depends on the thickness of the walls: 1.5mm- 3 years, 2mm- 5 years.
Device of the accumulative water heater
| 1- hot water removal tube 2- protective coating 3- magnesium anode 4- thermal insulation 5- Entering cold water 6- TEN 7- thermostat |
The cost of the tank also depends on its material and coating. For example, a tank with a capacity of 80l with the usual enamel from the same ARISTON company will cost the buyer at $ 143, with a titanium enamel - $ 208, well, and made from the "stainless steel" pulls on all $ 300. The difference is tangible.
The heating lamps used in NEVN are similar to those used in flow heaters.
How is heating? Cold water always comes from below, where, as a rule, there is a TEN. Contact him, the stream is heated. The hot water, the less density, so the selection of hot water from the tank always happens from above. When spending hot water from the tank, its volume occupies cold, as if squeezing the hot bottom up. In order for the heated water already to be mixed with the cold, the latter should flow into the tank evenly. They achieve this in different ways. For example, directing the bulk tube to the bottom or using the Umbrella type devices (split the jet about the plate and guide down), as well as using special nozzles (nozzles).
Why is it important to know? NEVN of small size is available with the bottom and upper connection (by the way, and flowing water heaters too). The first of them are intended for installation over washing - connecting nozzles look down, and the control panel is at the bottom of the device. The second are designed to install under the washing pipe, look up, and the control panel is also at the top (so as not to bend). Yet "insides" are located equally. First, in no case, do not install when transferring pipes up, so that it is easier to reach them from them to the mixer! The TEN is upstairs, the supply of cold water is also, but the removal of hot-down. In general, a drop of water heater.
Isv and the possibility of "coup" is! True, not all firms. For example, the MINI 5 Series Water Heater from Polaris. Osko afir for "coup" Water heaters Stiebel Eltron proposes to send a specialist who simply will install on the device branded additional conclusions (all German manufacturers have such kits).
Mounting troubles. Let's start with the fact that in the most simple water heaters it is quite difficult to "catch" the desired temperature at the output. Water in the crane appears with a delay, the time of which depends on the length of the pipes from the water heater to the tap and the value of the duct. Such water heaters are recommended to be installed as close as possible to the placement site.
In the kitchen, the heater should be placed under the sink to be in the period when in the apartment and so there is hot water, he does not curel his eyes. Single bathroom (3-3,6m2) is somewhat more complicated. Therefore, it will be possible to squeeze out what a test referee or a compact drive, and with the degree of protection not lower IP25. The optimal place to install the drive with a capacity of more than 50 liters is a sanitary wardrobe.
Solving the issue is whether to mount one heater into several points of water intake depends on the specific conditions. If the points are close to each other, perhaps it is worth it. If far (in the apartment 2 standing), before doing this, calculate the costs (the cost of pipes, the cost of work). It may be that more economical (and more convenient) to establish the second water heater.
Powerboard. It can be performed by plastic, metal-plastic, steel or copper pipe. Flexible liner with rubber hoses in braid is not recommended. It has a very large electrical resistivity and in the event of a potential on the water pipes, it is so much warmed up that the rubber hose is charred. It is omitous to use stainless bellows hoses - they are stronger and more durable.
If the eyeliner is performed by metal pipes or bellows hose, it is necessary to use special plastic inserts (12-14 rubles). They will protect the potential on pipes on pipes, and the tank electrocorrosion will exclude.
To protect the tank from corrosion in it, a protective anode magnesium rod is mounted. This is the so-called "sacrificial" metal-gradually destroying himself, it prevents corrosion of the tank in the places of enamel damage (if the anode is corroded, this is a signal that the enamel is damaged). The service life of the magnesium anode depends on its quality and size and in cheap water heaters is no more than 1, in more expensive - 2-3 years, and in some models it comes to 7 years (enlarged anode). If this element is timely replaced in a timely manner, the water heater will last for a very long time. It is quite difficult to study the integrity of the anode in the integrity of the anode, so it is recommended that it is not less common to call specialists per year to service. Models with electronic control control the state of the anode themselves: the light bulb caught the time to change it. The last developments of the company Stiebel Eltron and Unitherm installed the "Eternal" anode. He himself is not consumed, the negative pole of the source of constant voltage of 12V is connected to it, that is, the electrons are necessary for the "treatment" of the corrosion of the electron supplies the external source of the current (cathode protection).
NEVN is significantly less powerful than flowing, and therefore almost all single-phase. Exclusion - Outdoor drives 300l and more, they are usually three-phase.
Heat insulation
For cumulative water heaters, good tank thermal insulation is very important: how it is more effective, the less the heater turns on and the less energy spends on maintaining the temperature. Punching insulator can be used basalt fiber (Real "), most of the manufacturers preferred polyurethane foam. The thickness of its layer in small NEVN ranges from 20 to 30 mm, the heat loss is up to 30s per day. Warmed NEVNs with a more advantageous ratio of volume to the surface, the thickness of the insulation can reach 50 and even 80mm, which is why the heat loss does not exceed 5C per day.Closed and open
In accordance with the water supply systems in which the NEVN is working, they are divided into closed and open.
Closed (pressure) water heaters Constantly under pressure from the plumbing highway. The distribution crane and the pressure of cold water coming from the system begins to displace hot water from the tank. It is the pressure heaters are used in urban conditions. You can feed several watershed points from them.
To secure such a drive, you need to install a "security group", which consists of the next unit of the devices:
- check valve (so that hot water does not go back to the water supply when the water is turned off);
- Reduction valve (choke) - resets the pressure exceeding that the device is calculated;
- Safety valve-heating water increases its volume by about 3-4%; This extra volume is necessary to merge from the tank.
Reverse and reducing valves are installed on the inlet pipe. Drain from the safety valve is connected to sewage (with a mandatory jet break).
Such a group can be typed from individual elements, and can be purchased in the finished form. The set, calculated for the maximum pressure of the 6 bar, costs $ 88, 6-12 bar- $ 150. It can be supplied with a water heater or offered separately (pay attention!).
Open (non-free) water heaters. The word "non-perm" does not at all mean that for the supply of water to the tank does not need a pressure, and the flow from the crane is poured by gravity. The meaning of the name lies in the fact that the tank of the device in the absence of water analysis is only under the pressure of the fluid column in it. For operation, the devices of this series requires lower pressure than plumbing (less than 1ATM). As a result, they can work with water supplied with the pumps directly from wells and wells or a gravity of the reservoir existing in the house located above the heater. Due to the low operating pressure, it is possible to produce an inner flask, for example, from polypropylene, which significantly reduces the cost of the instruments. The volume of non-pressure tanks is usually small - 5-10l. In short, for country houses with its own water supply system, designed for small pressure, they are suitable as it is impossible. In colors, such devices are extremely rare, because they require a mandatory installation of the pressure reduced pressure.
For open-type water heaters, a special mixer is needed, which looks similar to the usual, but it differs significantly from the device. First, the supplying nozzles here are not two, but three - one joins the pipe, on which cold water will flow, the second, to the heater's entrance piece, the third. Secondly, the valves work somewhat unusual: one- opens the flow of cold water into the water heater and thereby flowing hot from it, the other is adjusting the proportion of hot water mixing with cold. Such a mixer at the same time is a kind of security group - "extra" hot water (the result of its thermal expansion) will merge through it. Naturally, only one point of water treatment can serve such a device.
You are currently available and, let's say, universal devices that can work according to the scheme of both open and closed NEVN (model VEN / H 15-30- $ 266-280 from Vaillant).
Office NEVN
All storage heaters work according to the same way: water is heated to a predetermined temperature, which is further supported automatically with a thermostat, as needed to turn on and turning off the tane. If the thermal insulation is good, the energy consumption for water heating is no more than for a 25-watt light bulb. The speed of the process is determined by the power of the heating element, which the NEVN is usually located in the interval of 1.25 to 2 kW. The temperature can be adjusted in the range from 7 to 85c. Voteschi from the drone, which simply adds a certain amount of degrees to the temperature of the original water, the drive warms it strictly to a predetermined temperature, without responding even to the drop in the power voltage. Large NEVN is equipped with a control system that supports the temperature of 8C in the tank. Wamped NEVN (5-15l) of this function, as a rule, no.Characteristics of flowing water heaters
| Manufacturer, total number of released series / models | Model | Voltage, C / Power, kW | Performance, l / min | Dimensions, mm. | Price, uu |
|---|---|---|---|---|---|
| Polaris 3/46. | Vega P. | 3.5 | 2.8. | 18522585. | 36.5 |
| Vega TS. | 5.5 | 4,4. | 18522585. | 65.8. | |
| Vaillant 3/13 | Ved 12. | 380/12. | To 10 | 481240125. | 280. |
| Ved 27 exclusiv | 380/27 | Up to 16. | 481240114. | 690. | |
| Merloni- Ariston 3/15 | AM 7022-IL | 7. | eight | 34022597. | 89. |
| AEE 7022-I USD (electronic) | 7. | eight | 34022597. | 221. | |
| Siemens 13/47 | DH 05101. | 220 / 4.6. | 2.5 | 235114100. | 154. |
| DE 27505. | 380/27 | 13.9 | 472236139. | 691. | |
| UNITNERM 4/13 | M3. | 220/3.5 | Until 3 | 15020050 | 110. |
| UDE24 | 400 / 18-24. | Until 14. | 46517099. | 430. | |
| Stiebel Eltron 8/30 | DHF 18 C. | 380/18. | 5.7 / 9,2 | 370200130. | 304. |
| DHE 18. | 380/18. | 6.0 / 10.7 | 470200138. | 705. |
How long is the water heats up?
Approximately the heating time can be calculated according to the simplified formula: with the power of 1kW 860l water heats up for 1C for 1C. For example, the 2kW drive is heated with a capacity of 100 l to 65 s about 3h.Almost all overseas manufacturers offer devices saturated with electronics (they can be connected to a double tariff counter). Watch devices appear digital display of operating parameters- data on the current and extremely given water temperature, its reserve IT.D. Extractive models have a quick heating button (for example, in the Exclusive series from Vaillant- 2/4 / 6kW). Such devices have a maximum power of 3.2 and even 4kW, which is turned on only if you click on this button. Highly mode they consume no more than 2 kW. Stiebel Eltron has been using the magnetic starter to avoid burning the thermostat in order to avoid burning the thermostat's contacts. It also appeared the possibility of programming the heating in time- The device does not work all night, and it turns on only in 5utr and 7 hours will prepare water (Elite model from Ariston).
Drive or referring?
The first problem that must be solved is some of the two types of water heaters to purchase. You will have to get to solve it from the question of the power supply of your home / apartment. Why? Installation of any electrical equipment, the power of which is higher than the power of the electric kettle, entails certain problems. Therefore, first of all, consult with DEZ specialists, the water heater of which maximum power can be connected to an existing wiring in the house.
If there is an electric stove in the apartment, then at your disposal a maximum of 8kW. In this case, you can in principle connect a fairly powerful PEVN to the wiring for the stove, but these devices will have to take turns.
It is possible to facilitate the problem of choice, inviting the service representative of the company you like. A specialist will explore the situation in place and will give a qualified council, which device will suit your specific conditions, and which is not. For example, Osko has such a call worth 500 rubles.
Now that you choose. From the cumulative water heaters for the kitchen, a model by 10-15 liters may be suitable, and if the dishes are 30 liters (power - 1.2-1.5 kW). You can take 3,2 kw, it will be faster, but God forbid to include a kettle at this time.
For the soul, you will need a storage device for at least 30 liters, but if the family is big, you will have to follow the scoreboard "Waste" (even with the power of 2kw 30l water heating 25-30 minutes). To wash without a schedule, on a family of two people it is better to install NEVN for 80l, from three- per 100 liters. In general, it is always better to have a tank as much as possible.
If the electrical power is available at your disposal, it is enough to install a flow water heater, select a single-phase model to 4-6kW for the kitchen and 8-12 kW for the shower.
By the way, the "voraciousness" of flow heaters is not more than a myth. Energy costs (and, consequently, money) to heat the same volumes of water in the devices of both types are almost identical. Simply drifts need a high power to warm quickly, the drives are also small, but they warm for a long time.
When choosing, of course, it is necessary to take into account the form and external design of the device. Which manufacturer to give preference, as they say, the business is the master. The main thing is that three parameters are optimally agreed: your financial capabilities, the presence of a place for the installation and the ability to exist in your house of power supply.
Characteristics of accumulative water heaters
| Manufacturer, total number of released series / models | Model | Volume, L. | Mass, kg. | Dimensions, mm. | power, kWt | Heating time from 20 to 65c, min | Price, uu |
|---|---|---|---|---|---|---|---|
| Polaris 5/59. | Mini 5 S. | five | five | 250380218. | 1.5 | sixteen | 72.8. |
| MV 180. | 180. | 42. | 5001265. | 2.0 | 315. | 347.9 | |
| Vaillant 8/24. | Ven 5. | five | 3. | 412240218. | 2. | 10 | 109. |
| VEH 400/4. | 400. | 523 (C water) | 1265605264. | 6. | 234 (from 10C) | 1274.7 | |
| Merloni- Ariston 9 / about 70 | Super Glass 10. | 10 | five | 360254360. | 1,2 | thirty | 83. |
| TITECH 500. | 500. | 146 kg | 7101870. | 6. | 280. | 1946. | |
| Siemens 12/26 | DO 05702. | five | 2.5 | 460295285. | 2,2 | 7.5 | 133. |
| DS 40022. | 400. | 121. | 6501730. | 4/6 | 214. | 1737. | |
| UNITNERM 7/40. | Usr50 | fifty | 17. | 918338345. | 2. | 120. | 189. |
| US200Z. | 200. | 85. | 1501526542. | 1-6 | From 120. | 890. | |
| Stiebel Eltron 17/60 | PSH 50 SI. | fifty | eighteen | 918338345. | 2.0 | 85. | 238. |
| SHZ 50LSD. | fifty | thirty | 740510510 | 1/6 | thirty | 864. | |
| Real, Russia | VM390. | thirty | 12.8. | 370590. | 1.5 | 72. | 120.69 |
| VM390. | 100 | 22.5 | 3901155 | 1.5 | 210. | 189,65 |
The editors thanks the company Osko, Vaillant, Polaris, Merloni Termosanitari, "Hydrosphere", "Vyoluks", "Terem", "Evan", "Real" for help in preparing the material.