With frequent shutdowns of hot water, the homeowner thinks about buying a flowing electric water heater for a tap. Such a device is easy to use and install, compact in size. When choosing a device, technical characteristics are taken into account, which must correspond to the operating conditions and the needs of the residents.
A flowing water heater is a small device that heats the water flowing through it.
The device and design of the electric heater on the tap
The heating nozzle on the tap looks like a simple mixer. A distinctive feature is its large size. In the protective case there are heating elements and elements that are responsible for the safety of using the device. More expensive models are equipped with a digital display, temperature sensors.
Inside the module there is a cartridge that regulates the liquid flow rate and a container with a powerful heating element. The presence of this part explains the high speed of reaching the desired temperature.
The compact tap water heater is equipped with a security system that includes the following elements:
- Water flow power sensor. Turns off the heating element in the event of a critical drop or increase in pressure. Strong pressure damages system parts.
- Water presence and temperature sensors. They prevent the heating element from burning out when the liquid supply is stopped. The flow sensor provides quick warm-up when the tap is opened.
- Fuse. If the characteristics of the electric current change or a short circuit occurs, the device is automatically disconnected from the network.
- Silicone damper. Protects the device from water hammer.
Types of flowing electric water heaters on the tap
This type of device is divided into several types: a removable nozzle and a mixer with a built-in heating element. Of course, here it is worth paying attention to the key points for the installation and operation of the equipment.
Tap nozzle for water heating
It is necessary to mount the mixer in advance, and then install the device on it. The main advantage is its affordable cost and small size. But due to its low power, the thermoblock cannot boast of good performance. Most of these models do not go beyond 4 liters. A thermal sensor acts as a protective element, which does not allow the device to overheat.
Crane with built-in electric heating
Such a water heater is usually installed instead of a standard mixer. This type of product is often quite common in stores. The device operates in three modes:
Varieties of compact equipment
Flow-through water heating means are divided into the following categories:
- Separate heating nozzle. The device is put on the spout of the previously installed tap. There is no need to perform complex installation work. The disadvantages of the nozzle are low power, weakness of pressure. The device heats up no more than 4 liters of liquid per minute. Compact dimensions do not allow completing heaters with complex safety modules. There is only a thermal sensor that does not allow the combustion of the heating component.
- Heating mixer. Heated taps are becoming more and more popular. The device operates in several modes. Turn the knob to the right to select hot water dispensing. The heating module is activated providing the user with warm liquid. Turning the knob to the left will shut off the electrical system. Cold water flows from the spout.When the regulator is set to the middle position, the device is de-energized, the fluid supply is stopped.
- Wall-mounted flow heater. Such models can serve several plumbing fixtures at the same time. It is reliably protected from overheating, voltage drops. Performance exceeds that of the previous two types. The equipment, which looks like a small box, is mounted on the wall. The oversized heating element allows the fluid temperature to rise rapidly. Wall-mounted devices are either pressure or non-pressure.
All types of instantaneous water heaters in Tyumen can be viewed in the KVANTA + online store.
Review of popular models of taps for instant water heating
There are many interesting models of heaters on the market. Among them you can find both expensive and exclusive, as well as simple and cheap.
Instant water heating tap "Aquatherm"
Outwardly, the device looks just like a crane.
Is a Russian manufacturer of inexpensive and high-quality flow-through heaters, which first showed its heater tap in August 2013.
From the general range of the manufacturer, the KA-001 model can be distinguished. This is a simple 3 kW flow heater. It is a ready-made structure in the form of a mixer that can be mounted on a kitchen sink or washbasin. There is one rotary lever to adjust the temperature. Maximum heating is possible up to 60 ° C. The heater is powered by a conventional 220 V network. The price of the KA-001 flow-type electric crane-heater starts at 3600 rubles. When it comes to reviews about the model, people are mostly happy.
Review of КА-001
More details on Otzovik: https://otzovik.com/review_5530320.html
Review of КА-001
More details on Otzovik: https://otzovik.com/review_6337200.html
crane "Aquatherm" KA-001
Crane-water heater Delimano
Some models may even have a digital display of the current temperature.
The Delimano heater faucet is made in a stylish case that can easily fit into almost any kitchen interior. Designed for small household needs of the kitchen - wash hands, dishes or draw warm water. Heating up to 60 ° C occurs in 5 seconds. All this with a 3 kW heater. User reviews of this instant hot water tap are slightly divided.
Feedback on the Delimano flow valve
More details on Otzovik: https://otzovik.com/review_1568170.html
Feedback on the Delimano flow valve
More details on Otzovik: https://otzovik.com/review_2034314.html
flowing valve Delimano
Fast heating water valve Supretto
Outwardly, all these analogues are practically no different.
Another compact heater tap with a power of 3 kW. The maximum heating temperature is 60 ° C. The device is powered by a 220 V network and can heat water up to 40 ° C in 3 seconds.
Features of the flow heater
When installing heating equipment, the following nuances are taken into account:
- Limiting the amount of heated liquid. The flow rate rarely exceeds 6 l / min. The performance of the gas heater is 2 times this value.
- Increased load on the electrical network. Installing the attachment in old houses requires a separate wire to be laid. It is mandatory to connect through a grounded outlet equipped with an RCD.
- Possibility of servicing a single water intake point. The supplied volume of heated liquid is not divided into several streams. To provide hot water to the whole house, a boiler or wall-mounted flow heater is purchased.
- Complexity of service. When a malfunction occurs, it is difficult to repair the portable device. Repair kits are rarely produced by manufacturers.
The main advantage of such hot water installations is their compactness.
Delimano, water heater
The crane of this company is one of the most popular. In order to heat the water for a shower, a medium-power device is usually enough. But for people who like to take a bath, it will be necessary to install an additional appliance in the kitchen in order to have enough power. Heating water up to 60 ° C is achieved in just a minute.
The biggest advantage is ease of use.According to many reviews, it was not difficult for users to install a water heater. A huge drawback is the consumption of a large amount of energy. Therefore, many users are constantly knocking out plugs, and they have to install more powerful ones. Many people do not like the fact that when turned on, a thin stream of hot water flows, and with an increase in pressure, it becomes barely warm.
Therefore, it becomes difficult to collect any large containers. The water heater faucet, reviews of which indicate that not everyone can install the device, also note quite frequent breakdowns of the electrical element.
Feasibility of use
To understand whether it is worth installing a compact water heater in your own apartment, they evaluate the advantages and disadvantages of the device.
The positive qualities of the equipment in question include:
- Compact dimensions. This advantage becomes the main one for the owner of a typical apartment. The heater takes the place of a standard mixer on a sink or wall.
- Increased warm-up speed. Regardless of the power of the appliance, hot water starts to flow in 10-30 seconds. Standard boilers are turned on 20-30 minutes before the start of use.
- Maintaining a constant temperature. Modern models are equipped with sensors that regulate the heating of the heating element.
- Aesthetic qualities. The variety of models allows you to choose a device that matches the design of your kitchen or bathroom.
- Easy to install. The installation process does not differ from that of a simple mixer. Additionally, an electric cable is supplied.
- Increased efficiency. The device works only when in use. After closing the tap, energy is no longer consumed.
Manufacturers of instantaneous water heaters claim to be economical. However, this is not quite true. The power of the heating element reaches 4.5 kW. With frequent use of the device, energy costs increase.
Design features
Instantaneous water heaters are available in a variety of designs. First of all, they can all be divided into two groups:
- Free-flow. These devices are called "heated mixers". They are equipped with a spout or shower head and fit onto the sink like a conventional mixer. The connection to the pipe is carried out with a flexible hose.
- Pressure. These flow pipes cut into the pipe, that is, in the absence of water flow, they are under the influence of the pressure in the pipeline. With sufficient power, such a device can be installed before the branching of the pipeline, where it can serve several water points. Low-power models, capable of heating water for only one point, are usually screwed onto the pipe in the place where the flexible hose from the mixer is connected to it. After that, the eyeliner is screwed to the outlet of the water heater - and the system can be used.
Note that in the case of using the heater only during the disconnection of the centralized hot water supply (DHW), and not constantly, such a connection is irrational.
The fact is that this device has significant hydraulic resistance, due to which it weakens the pressure to some extent. It would be more correct to perform a bypass bypassing the water heater, through which it will be possible to start water with a normally operating DHW.
Crane model
The bypass is very simple: a tee and a ball valve are screwed in front of the water heater, another tee after the water heater; another ball valve is screwed to the branch of the first tee, then a 90-degree elbow, a pipe segment and another elbow with a pipe segment leading to the second tee branch. If hot water is supplied through a centralized system correctly, we direct water through the bypass, receiving the usual pressure.
If the water is turned off, we switch the taps so that the water is supplied through the water heater. Instead of the first tee with two ball valves, a 3-way valve can be installed.
If there is a centralized hot water supply, a check valve must be installed at the inlet of the "hot" pipe to the apartment. Otherwise, when the hot water supply is turned off, part of the water heated by the flow through the mixer will drain into the “hot” riser, if the user accidentally forgets to close the “hot” tap.
In addition to the heating element, the flow-through electric water heater contains:
- Coarse filter. If this element is not included in the kit, it is recommended to purchase it separately and install it in front of the water heater.
- Flow sensor. At its signal, the power to the heating element will be supplied automatically as soon as the user opens the tap. The same sensor will not allow the heater to run dry, which would lead to overheating.
- Overheating sensor. Blocks the power supply to the heating element if the outlet water becomes too hot. In different models, the maximum permissible temperature is considered to be + 60C or + 70C.
- Rheostat or semiconductor power regulator. As the name implies, you can use it to change the thermal performance of the heating element.
- Residual current device (RCD). A powerful electrical appliance in contact with water is potentially dangerous due to the possibility of severe electric shock. Therefore, manufacturers, not relying on the prudence of users, build RCDs directly into the water heater. This device is engaged in monitoring the leakage current in the circuit connected to it. If suddenly the user is energized, part of the charge will flow through him and the RCD, detecting this, will immediately disconnect the circuit. Leakage of current will also take place if, as a result of a fault, the phase is shorted to the device case, connected to the grounding loop. As soon as this happens, the RCD will immediately de-energize the water heater and will not allow it to be turned on until the malfunction is eliminated.
The RCD does not provide protection against short circuits and other overloads, that is, its presence does not exempt from the need to install a circuit breaker or fuse.
The specified list of devices is basic. In modern electronic models, a thermostat with a display, an infrared sensor (water is supplied when hands are brought under the spout) and other options can be installed.
Criteria for choosing a water heater
Before purchasing the equipment, the required power is calculated, the technical characteristics of several models are compared.
Electric heaters allow heating the liquid almost instantly.
Performance and power
When choosing a water heater, take into account the installation location - bathroom, kitchen. The estimated capacity of the equipment depends on this.
To calculate the indicator, use the formula: W = V * (T2-T1) /14.3, where:
- W is the required power of the device, kW;
- V is the volume of consumed water;
- T2 is the required heating temperature (depends on the purpose of using the equipment);
- 14.3 - constant value;
- T1 is the temperature of the liquid present in the water supply system (+15 ° С - in summer, +5 ° С - in winter).
Heating element type
TEN is the main component of the device.
Most often it has a spiral shape that increases the contact area. Curved or straight heating elements are less common.
The efficiency and service life of a part depends on the material of manufacture:
- Heating element with copper coating. Differs in good thermal conductivity, resistance to scale formation.
- Tubular ceramic heater. Provides the device with high performance. Differs in high cost.
- Glass-covered spirals. Parts are undemanding to maintain, however, when scale appears, their thermal conductivity decreases.
Operational safety
In addition to the standard protective equipment, the conformity of the housing to the standards is assessed.
When choosing a heater, 2 parameters are taken into account:
- the degree of protection against shock to the user;
- moisture protection class.
Most instantaneous water heaters have 1 degree of protection. This means that conductive components must be insulated and grounded.
Other parameters
In addition to standard indicators, when purchasing equipment, the following characteristics are taken into account:
- body material;
- control method;
- availability of additional functions.
Flow heaters are mechanical and electronic. The former have 3 operating modes, manually switchable. Electronic devices independently maintain the required indicators. The attachments are constantly exposed to negative factors, so the body must be made of high-quality materials - polypropylene, stainless steel, copper.
Safety features
The water heater faucet has combined such incompatible things as liquid and electric current. This combination can lead to electrical injury. That is why all devices have the maximum degree of protection, which includes the following elements:
- RCD. It is designed to protect a person from electric shock in case of mechanical damage to the case or electrical elements of the device. Another function is overvoltage protection.
- Overheating protection sensor. If the liquid reaches a temperature of + 60 ° C, the sensor is triggered and the device turns off. The work is restored on its own after the temperature drops.
- Dry start protection sensor. It happens that in the water supply system there is either insufficient or excessive pressure for supplying water. In this case, the sensor turns off the heating device.
- To protect against water hammer, a special silicone damper is installed.
- All electrical filling is protected by waterproof material.
The principle of operation and features of the heated crane
A modern instantaneous electric water heater for a tap is a device that does not supplement a tap, but replaces it. Therefore, its definition is considered somewhat erroneous. The device is quickly built into the kitchen sink (or simply into the sink), after which it is connected to the electrical network and to the water supply.
Since such water heaters are designed for houses that are not connected to centralized sources of hot water supply, nothing prevents us from building such a water heater instead of the tap itself.
Instantaneous water heater with display for more convenient adjustment of the hot water temperature.
Instantaneous water heaters work very easily - after opening the tap with water, the heating element turns on, and after a few seconds hot water starts flowing from the tap. The heating temperature for most models is 40-60 degrees. If necessary, you can adjust the temperature to your liking. As soon as the tap is closed, the flow of hot water will stop, and the heating element installed inside will be turned off.
The flowing water heater on the tap can work without heating - for this you need to turn the regulator knob in the other direction. And in order for you to be able to provide fine adjustment of the heating temperature, we recommend that you choose a model with separate adjustments - here one knob regulates the pressure, and the other regulates the temperature. As a result, you will be able to get hot water at the temperature you need.
The greatest convenience is provided by advanced heaters equipped with LCD displays and touch controls. But you have to pay for this convenience - the cost of such heaters is somewhat higher. If you want to save money, buy the simplest model, since the temperature can also be adjusted with a knob.
When buying plumbing equipment, please note that it is better to buy a mixer with heated water from the manufacturer. This recommendation is due to the fact that branded devices are maximally adapted by the manufacturer for operating conditions: poor water quality in the system, power outages, etc. Fakes will not last long.
All taps on the market with heated water for summer cottages and apartments operate in 3 modes:
- The lever is lowered down - the mode of de-energizing the electronic circuits of the mixer. The water does not lend itself to the tank, and the instantaneous water heater of the heated mixer does not heat the water.
- The lever is turned to the left of the body - cold substance supply mode. At this point, no voltage is applied to the electronic circuit.
- The lever is turned to the right - the mode of heating and supply of the substance. Whichever you decide to buy an electric water heater faucet for the kitchen or bathroom, it will deliver a substance with a temperature of 50 to 70C. All models of faucets for apartments and taps for summer cottages with heated water, which can be bought in a house where children grow up, are available with a temperature regulator. They are practical and safe to use.
Since the mixer with heated water is an electrical device, when choosing it, it is recommended to pay attention to the protection class of the device. When installing such equipment in a house or apartment, you must be sure that it is 100% safe. A high level of protection of the case has the Aquatherm instantaneous water heating tap - IP × 4.
The tap water heater is a compact device. Its use in an urban dwelling solves the problem with the supply of warm water. How appropriate the installation of such a device is determined by the frequency, intensity and conditions of its use.
The main difference between the equipment and other water heaters is that it is mounted on a tap. This makes it possible to quickly solve the problem associated with a shortage of hot water. After installing the device, warm water appears in the apartment in a matter of minutes.
Modern models of water heaters of this type meet all the requirements for them:
- They have high protection against electric shock.
- Provide the ability to adjust the temperature of the water.
- They are distinguished by their ease of use.
- They have a modern design.
Thus, we can safely say that the devices installed on the crane, which are offered in stores today, are absolutely safe. Their use ensures the supply of warm water in a short time. If a choice is made in favor of equipment from a large company, then at the disposal of the user is a device that is distinguished not only by high quality workmanship, but also by reliability.
- TEN of high power;
- temperature level regulator;
- fasteners with which the device is connected to water supply networks;
- hot water tap;
- emergency shutdown device;
- thermal sensor;
- water filter;
- safety relay.
We suggest that you familiarize yourself with How to install a water heater to a shower cabin
Electric water heaters can help you save money
A flow-through electric water heater for a tap differs from a conventional mixer by the presence of an electric wire, which is connected to an AC network. When using such a device, it must be borne in mind that when connecting electric current and running water, there may be a danger to the user.
Therefore, the choice of the device must be approached with all seriousness. Preference should be given only to high quality models offered by well-known manufacturers. If, for the sake of economy, inexpensive equipment is purchased, then its use can be fatal.
How it works
Instantaneous water heater device.(Click to enlarge) When the hostess needs to wash the dishes, cook dinner or just draw hot water, just turn on the tap.
The main part of the device is a coil made of a copper or steel heating element.
The principle of operation is the same as in any electric kettle.
For rapid heating, the dense coil occupies the entire space inside the device. Advanced models are equipped with temperature sensors and relays that regulate the set outlet temperature.
It is worth noting: it is important to remember that low-power water heaters cannot quickly heat up a large volume and it often happens that water of the required temperature flows in a small stream.
Simple and cheap heaters have a direct connection diagram and the temperature is controlled by the water pressure. For advanced people, you can set a comfortable temperature using a thermostat.
Also, a simple user does not need to constantly pull out the wire for the tap from the outlet - the water pressure sensor itself will supply energy when needed.
You may also be interested in the article on Ariston instantaneous water heaters. Read the article about Termeks storage water heaters here.
After reading this article, you will get acquainted with the models of Ariston storage water heaters.
Features of the device
Before proceeding with the installation, please note that even the compact Aquatherm faucet for instant water heating has increased dimensions - the width of the device is 24 cm. The length of the spout and the height of the device are classic. Therefore, initially decide on the installation site. Nothing should interfere with the use of the Aquatherm mixer, which you can buy in a specialized online store.
The installation order will be as follows:
- Connect the water outlet and main mechanism. The mount must be sealed, use tow or tape. Any mixer with heated water for a summer residence or apartment has a bottom fluid supply. Tighten the threads firmly, but be careful not to damage the seal. Also, it must not be allowed to move, otherwise the valve will leak.
- The head of the tap with instant water heating must point straight up when making the connection.
- Combine the connector and the main mechanism. The faucet inlet insert for washbasin and instant hot water tap with shower (without shower) should be placed underneath.
- Installation is carried out in the sink or on the sink. Remember to fit the rubber seal.
- The main mechanism is fixed under the sink with a nut. Tighten carefully so as not to break the thread.
- Connect the installed tap for water heating, the price of which also includes flexible piping, to the water pipe. Attention: the mixer is only connected to the cold water pipe!
- Make an outlet to the network.
- Connect an inexpensive mixer with a heater to the mains.
- Carry out commissioning. Perform a cold injection test initially to ensure that there are no leaks. Then a tap for instant water heating with a shower, which is also profitable to buy because the mixer eliminates the need to use a hot water supply, can be tested for the quality of heating.
We offer you to familiarize yourself with How and how to seal a large gap between the bathroom and the wall
This is how affordable taps for instant water heating are installed in the apartment and in the country. No additional manipulations are required. Experts have found that the weak point of the mixers is the aerator. With such a breakdown, you can easily change the nozzle to a mixer for heating water - the price of a new one will fluctuate between 22 and 650 rubles.
It is also worth mentioning that there are models of devices with a vertical heating element. They look a little more compact. A mixer with a heater with a horizontal tank can be purchased from the Delimano brand.
The nuances of installing a water heater nozzle on a tap
The nozzle with water heater function is a unique design with simple installation that suits many families. The kitchen is the most common application. If you follow the instructions and take into account the nuances of the installation, such an invention will last for many years.
When installing a mixer, consider the following:
- Grounding is required for safe use.
- The cold water inlet on the appliance must be compatible with the spout.
- A powerful device can only be installed if the electrical wiring is 100% sure.
