Installation of instantaneous water heater - installation algorithm. Ways to install electric instantaneous water heaters Electric instantaneous water heater on a faucet how to install

Previously, we conducted a review in which it is thoroughly covered, as well as recommendations for choosing.

So, the new "protochnik" got rid of the packaging, read the instructions and now is the time to think about where it is better to install the instantaneous water heater.

It is advisable to choose a place for installing an instantaneous water heater based on the following considerations:

whether in this place spray from the shower will fall on the device;
how convenient it will be to turn the device on and off;
how convenient it will be to use the shower (or faucet) of the device.

Before proceeding with the installation, you need to decide:

whether it will be convenient to use the device directly in the place of taking a shower (or, say, washing dishes);
whether it will be convenient to use different modes of operation (if there are such adjustments);
whether moisture or water will get on the device (after all, there are clean 220V!).
It is also necessary to take into account the future water supply - how convenient it will be to connect the instantaneous water heater to the water supply. There will be no special conditions for the wall - the weight of the device is small. Naturally, it will be somewhat more difficult to mount the device on curved and very uneven walls.

Do-it-yourself instantaneous water heater installation

Installation begins with determining the location. We take a level, a pencil and mark the place of the future installation. We remove the top cover from the water heater and apply it to the wall, draw a horizontal line with a level and mark future holes. Using a drill, we drill holes for dowels (or plugs - as you like). We install the dowels and fasten the device to the wall with screws.

Usually, the kit contains the necessary fasteners, but it often happens that the dowels themselves are short (for example, there is a thick layer of plaster on the wall) and the screws themselves are short, so I would recommend purchasing the necessary fasteners of the required dimension in advance. On this installation can be considered complete.

Connecting the instantaneous water heater to the water supply

An instantaneous electric water heater can be connected to water in several ways.

The first way is easy

We take a shower hose, unscrew the “watering can” and connect the hose to the cold water inlet to the water heater. Now, by setting the faucet handle to the “shower” position, we can use the water heater. If we put the handle in the “tap” position, then cold water comes out of the tap, bypassing the heater. As soon as the centralized supply of hot water is restored, we turn off the water heater from the “shower”, fasten the “watering can” of the shower back and continue to enjoy the benefits of civilization.

The second method is more complicated, but more correct

Connecting the water heater to the water supply of the apartment through the outlet for the washing machine. To do this, we use a tee and a skein of fumlents or threads. After the tee, to disconnect the water heater from the water and to adjust the pressure and temperature of the water from the water heater, a tap is needed.

When installing a crane, you should also pay attention to the ease of use of the latter. After all, we will repeatedly open and close it in the future.

The section of our water pipeline from the faucet to the water heater can be mounted using various pipes: from metal-plastic and PVC to ordinary flexible pipes. The fastest way, of course, is to make an eyeliner using flexible hoses. If necessary, our plumbing can be fixed to the wall (or other surfaces) using brackets or any other means of fastening.

How to install an instantaneous electric water heater - video

Connecting the instantaneous water heater to the mains

As a rule, domestic single-phase instantaneous water heaters are very powerful devices - from 3 to 9 kW. Accordingly, for proper connection, a dedicated line will be required (always with a separate RCD for emergency shutdown), since the usual one will not withstand such voltage.

It is forbidden to use standard sockets for power supply, due to the fact that in most cases they do not have proper grounding.

When connecting wires to screw terminals, phasing must be observed:

L, A or P1 - phase;

N, B or P2 - zero.

Attention! The instantaneous water heater must not be turned on if it is not filled with water.

It is not recommended to perform electrical work on your own, it is better to use the services of a specialist.

Water heaters used in everyday life are used to supply warm water to apartments in multi-storey buildings, as well as private households. They do not have the same power as industrial appliances, and are designed for a certain number of residents.

To equip housing with a water heater, a minimum experience in plumbing installation will be enough.

The device of water heaters and their varieties

First you need to choose the type of heating device that is most suitable for your case. To do this, it is worth analyzing and determining what requirements the product must meet, as well as its parameters and functions.

Apparatus for heating water may differ in the type of power supply and in the functional device. Water heaters can be powered by natural gas or electricity. According to the type of action, the units are under running water and with a storage tank.

Storage water heaters

Water in storage systems is heated in a tank connected to the water supply. This type of heating device is especially popular. This can be argued by the affordable cost of devices, as well as the absence of special conditions for the installation of electrical equipment.

Flow type devices

The functional device of instantaneous water heaters is that the water is heated by passing through a special sleeve equipped with an electric thermocouple. Products of this type are mounted directly on the mixer, which is connected to the water supply.

This system provides heating of water within 30 degrees. A significant disadvantage of such devices is that electrical devices have a high energy consumption. This is disadvantageous from the point of view of economy. In addition, not all houses have electrical wiring that allows the operation of such powerful water heaters.

According to the class of energy consumption, flow-through heating systems are divided into two types - single-phase and two-phase. Another difference is what type of heating element is used in the device. It can be a heating coil or a thermoelectric heater. In the event that tap water has a high salt content, the best choice would be to install an instantaneous water heater equipped with a spiral. In addition, devices with heating elements consume 20-30% more electricity. The internal heating system will be the best option for seasonal use, for example, in a country house.

One of the main advantages of a flow type device is the convenience and ease of installation. This type of work can be performed by a completely unprepared person. To do this, you do not need to have any skills in either plumbing or electrical engineering.

For most of these devices, the design provides for placement on the wall in close proximity to the mixer in the kitchen area or in the combined bathroom in order to reduce heat loss. Flow-type heating devices have a low mass, and therefore they do not require major fasteners, as is the case when a boiler is installed in a bathroom. To do this, you can use simple fasteners and hardware. Depending on the model, the heaters can be located above the faucet or under the sink. One of the advantages of such devices is the possibility of hidden installation. To do this, you can use plastic wall panels.

You can find out how to install a tankless water heater in the bathroom by reading the instructions that came with the product. It must be equipped with a connection diagram for the instantaneous water heating system.

Heaters operating on this principle have the following shortcomings:

high energy intensity- from 5 to 30 kilowatts;
required for the correct operation of the equipment certain level of pressure in the plumbing system; this eliminates the possibility of using instantaneous water heaters on the top floors of apartment buildings.

Flow type devices are optimal for installation in small rooms with a small number of residents. In this case, the apartment should be located on the lower floors.

What you need to install a heater under running water

In order to carry out temporary installation of an instantaneous water heater, the following set of tools and parts should be available:

directly the water heating device itself;
shower hose with removed head, which should be connected to the faucet;
hammer drill or impact drill, designed for punching holes in concrete;
fasteners - dowels with self-tapping screws;
a drill with a diameter corresponding to the size of the dowels;
three-core copper electrical wire capable of withstanding sufficient load;
adjustable wrenches - pipe and "Swedish";
pliers;
winding - tow or fum-tape.

In the event that the product is installed capitally, you will need the following plumbing fittings:

a tee for supplying water from the water supply system to the water heater;
a valve that shuts off the water supply to the device;
a hose with union nuts of the correct size for connecting water to the appliance.

Instead of hoses, you can use a kit for mounting metal-plastic pipes.

Preliminary work when installing an instantaneous water heater

First of all, you need to decide on the choice of the model of the device. There is a fairly wide selection of flow-type heating systems on the market, the installation of which can be done without the help of professionals. You should be aware that the models of this plumbing equipment have quite strong design differences. The appearance of the devices may also vary. But all modifications have the same principle of operation, and the installation of the product is carried out according to a certain scheme.

Temporary installation of an instantaneous water heater is easy to perform even for a beginner

The flow type water heating unit consists of a heating element, which is a brewed flask with a pair of 12-inch diameter pipes and three electrical terminals. Phase, zero and ground wires are connected to them. Also, the system design includes the body of the product and the switch. In addition, depending on the modification, the product can be equipped with a rheostat switch for smooth temperature adjustment, automatic emergency fuse and LED backlight.

Installation of a flow-through water heating system

Installation and assembly of such a design can be done in two different ways. In the first case, the outlet of hot water from the appliance is connected directly to the faucet using a shower hose with the nozzle removed. With this installation, the hot and cold water supply will be adjusted using the mixer control lever. When the mode knob on the faucet is set to shower mode, hot water is supplied to the faucet. And in the faucet mode, cold liquid flows from the water supply.

Of course, it is desirable, if possible, to connect plumbing equipment in a more serious way than with an unreliable rubber shower hose. To do this, it is necessary to make a major installation of the product to the pipeline. Install a shut-off valve on the water inlet to the heater.

Shut off the valve at the water inlet to the apartment. On the selected area, using tow or fum-tape, install a coupling - an adapter with which water will be supplied to the device. Seal connections carefully.

Powering the device with electricity should be done by fulfilling the safety requirements for connecting electric heating equipment. It should be remembered that the energy intensity of the heating elements may exceed the permissible load in the electrical network of your apartment. In the best case, this will lead to knocking out traffic jams or automatic fuses, but wiring fire is not ruled out. Before you purchase an electric heater, think carefully about this point. The device is powered by electricity through a socket, which must be grounded.

The stopcock is connected to the inlet pipe of the heating element, and water is supplied to it using a hose or metal-plastic pipes. After that, the device is ready for use.

The next step is to install the faucet or shower faucet included in the product delivery. Now you can test run the equipment. To do this, open the tap and turn on the electrical equipment in the network. After a short period of time, 10-15 seconds, heated water will come out of the mixer drain hole. Depending on the energy class, it may even be hot. The pressure and temperature of the water is regulated using a mixer - if the tap is slightly opened, hot water will flow, and when it is fully opened, cooler water will flow.

You should know that with the help of flow heaters it is almost impossible to obtain high temperature water. If you need very hot water, it makes sense to think about how to install a boiler in the bathroom.

In the event that tap water does not meet quality standards, it is advisable to install a filter in front of the water heater inlet. This will extend the life of the product. Use branded pipes and plumbing fittings.

Connecting the instantaneous water heater to the mains

Equipment must be properly grounded. In addition, the system must be equipped with an emergency switch. It should be remembered that the water in the flow device heats up within 20 degrees, so the temperature of the liquid may differ in the cold and warm seasons.

Before you make a purchase of an electric water heater, you should accurately calculate the load that the wiring will be subjected to. The cable parameters must correspond to the declared power of the heating unit. Also, different types of heating elements require different types of wiring. In addition, the system should be equipped with an emergency automatic fuse.

We can say that modern instantaneous water heaters will become a reliable source of warm water in your home. Such products will help you quickly and easily solve the problem of hot water supply.

Marking the wall for drilling holes for fastening the instantaneous water heater

Uninterrupted hot water supply is very important for modern life.

Having installed a storage system, you will have to wait until the water heats up to the desired temperature.

Instantaneous water heaters are powerful electrical appliances that allow you to get hot water when you need it.

Temporary installation of an instantaneous water heater does not require much time

For country houses, a major installation of the device is appropriate

Given the high power of the device, it is better to install an emergency automatic power off system

Schematic representation of a water heating device

If hard water is supplied to the system, it is advisable to install a cleaning filter together with the instantaneous water heater.

Check the quality of plumbing connections

Centralized hot water supply is a great boon that makes life and housekeeping convenient and comfortable. In country houses and during summer hot water outages, they come to the rescue. They are divided into pressure and non-pressure. If you have skills in working with plumbing and electrics, a home master can install them yourself.

Installing an instantaneous water heater: step by step instructions

Installation of the flow heater is carried out in accordance with the recommendations set out in the user manual. In addition, it is necessary to comply with the requirements for the safety of electrical and plumbing work.

Installation work is divided into the following steps.

Preparatory work - checking the electrical network

Flow heaters heat water as it passes through. Therefore, they consume large power - from 2 to 30 kilowatts. Before purchasing a specific model, it is necessary to find out whether the power supply network at the installation site can withstand such power.

In addition, you should make sure that the wiring is made of modern materials and has a sufficient cross section. In any case, it is better to draw a separate line from the switchboard, powering it through a charge cut-off device (RCD). To connect the device to a standard 220 volt AC network, use a three-core double-insulated copper wire (type NYM or VVG) with a cross section of at least 2.5 mm2 and an RCD rated for 30 A. Be sure to use grounding. If wiring is carried out on a wall that is exposed to heat, the wire cross section should be increased.

Selecting a location for installation

The mounting location of the device is determined by its type. Non-pressure type devices are installed near the point of hot water consumption in order to reduce heat loss. Such heaters are mounted on the side or top of the sink, next to the faucet in the bathroom. If the appliance is equipped with both a drain and a shower hose, a place for attaching a watering can must be provided.

Installation next to the shower and sink

Different models are available with different degrees of moisture protection. In any case, they should be installed so that the flow of water from the shower does not fall on the body. At the same time, the controls (flow, temperature and power button) should be easily accessible both when using the sink and the shower.

Pressure-type devices have high performance and electrical power. Schemes based on them are built if it is necessary to provide several points with hot water, for example:

kitchen;
bathroom;
shower cabin;
toilet, etc.

In this case, the heater is mounted next to the riser or at the point of maximum water consumption. With a large length of the supply pipes, they are thermally insulated with foam rubber sleeves. The place of installation must also provide convenient access for maintenance of the device.

General connection diagram

Flowing electric heaters are resistant to high humidity and accumulation of condensed moisture.

Wall mounting procedure

Despite the small weight and dimensions of household flow heaters (compared to storage heaters), mounting them on the wall should be taken seriously.

Reliable fastening is provided by such walls as:

concrete;
brick;
wooden.

Installation on partitions made of drywall, even moisture resistant, is not recommended.

It is necessary to install the device strictly vertically, without distortions. With a significant deviation from the vertical or horizontal, the electric heating element may not be completely covered with water. This will lead to overheating and failure of the device.

If special brackets or other fasteners are included in the package, their use is mandatory.

Leading manufacturers supply their products with a paper or cardboard template, on which the holes are already marked. Its use saves time and helps to properly place the device on the wall.

Mounting templates and diagrams from the manufacturer

To install the device, you will need a drill and drill bits suitable for the wall material.

The installation sequence is as follows:

make sure that the heater is in the "Off" state;
remove the case;
according to the template, mark the attachment points;
drill holes, insert dowels;
tighten screws;
install brackets or other means of fastening (if provided);
hang the device on the wall and check the installation angles with a level or plumb line.

Electrical connection

Important! Before starting electrical work, make sure that the cable is not energized.

Pull the end of the cable through the opening of the housing in such a way that it is not stretched and does not break inside the device. The top layer of insulation is removed by 50-70 mm. From the current-carrying conductors, the insulation is removed by 7-10 mm. These tips must be cleaned with a needle file or just a flat screwdriver and inserted into the mounting box in accordance with the designations. It is necessary to tighten the screw fasteners of the terminals "up to the stop". Reliable contact will prevent sparking, overheating and failure of the device.

As with any electrical equipment connected in wet conditions, the power circuit must be equipped with a Charge Disconnect Device (RCD). When a leakage current appears, it will instantly turn off the device, excluding a severe electric shock to a person. The closer the RCD is mounted to the protected device, the more efficient its operation and the more reliable the protection. If the heater is mounted in a private house, the RCD should be located on the switchboard closest to the heater.

Electrical connection

Water connection options

Ways to connect water to the device differ according to the place of installation:

Top connection. The device is mounted above the water assembly.
Bottom connection. The device is installed under the sink or on the side of it

Depending on the type of wiring, the connection is distinguished

To the pipes hidden in the wall. When connecting, the corners are first mounted, the nozzles of the device are connected to them through the “American” coupling.
To openly mounted.

There are two pipes on the body of the device - inlet for cold water and outlet for hot.

Connection to hidden and open pipe wiring

The water heater is connected to a centralized cold water line or to a storage tank. In any case, you need to monitor the presence of water at the inlet and maintain its minimum pressure. When connected to pumping stations that raise water from a well or well, a mechanical filter should be used to purify the water.

How to install and connect instantaneous water heater

Before choosing a model and installation scheme for a water heater, you should decide on its purpose. It also comes with technical specifications. Below are the nuances of connecting and installing an instantaneous water heater to electrical networks and water supply in specific conditions.

In the apartment and in the country

Temporary devices of low power with a small daily consumption are suitable. They are installed in case of a shutdown of hot water in a city apartment or in a country house for the summer period. For stable operation of a non-pressure device, it is mounted 2 meters above the draw-off point.

If there is no centralized hot water supply in the house or apartment, it is better to choose a powerful pressure apparatus and a hot water pipe distribution system. Such devices are designed for year-round use and require a minimum pressure in the line from 1.5 to 2 atmospheres.

In the bathroom and in the kitchen

Install low-power devices designed for a single consumer.

To mixer

A low-power flow heater is connected instead of a spout or a mixer shower hose. This scheme is used as a temporary.

To the water supply

Below is a diagram that allows you to supply consumers with hot water, both from the mains and from the heater.

Plumbing connection diagram

Electric - to the mains

One of the options is shown in the diagram. The RCD should be placed as close as possible to the heater.

Electrical connection. (SUP - feed control system)

electric per shower

Low power devices designed for a single point of water consumption are often equipped with a spout and / or a shower hose with a watering can instead of an outlet.

Shower heater installation examples

It is absolutely unacceptable to install taps or other shut-off valves on the outlet pipe of such devices. If the heating is on, it will cause overheating and failure.

Gas

If the main gas is connected to the apartment or house, the gas heater will be a convenient, safe and economical solution.

Gas appliances have great power and easily provide several consumers.

The installation of such a device requires coordination with local gas services.

Gas water heater connection diagram

To avoid interruptions in hot water supply, an instantaneous water heater is installed. It is much more compact than a boiler, since the design does not provide for a storage tank for heating the liquid, and instantly heats the water.

The principle of flow heating water

A heating element is installed inside the device. Water is heated directly during the passage of the water flow through the device. The advantage is that heating is carried out quickly, just turn on the water and the heater. The storage water heater can heat cold water up to +40…+65°C, that is, to a temperature comfortable for taking a shower or performing other hygiene procedures. The parameters can be adjusted manually using the buttons on the heater panel or using the remote control.

Water heater selection factors

When choosing an electric instantaneous water heater, you must consider:

the volume of hot water consumed per day - it depends on the number of people permanently residing in an apartment or house;
the cost of electricity that will be spent on heating water;
the amount that can be spent on the purchase of a heater;
desired outlet liquid temperature;
the volume of water consumed with the simultaneous inclusion of all water points.

If you plan to install the device yourself, you need to take into account:

installation complexity;
maintainability of the model;
complete set;
terms of warranty service;
guarantee period.

Reasons for self-installation of the device

Self-installation is performed for the following reasons:

limited financial resources;
tight deadlines for installation;
desire to acquire new skills;
lack of specialists.

Installation instructions for the electrical model

Do-it-yourself installation of an electrical appliance is carried out step by step, strictly following the instructions.

Preparatory work - checking the electrical network

Not every wiring is able to withstand the load from the connected instantaneous water heater. The power of the device is at least 2 kW, and it will work simultaneously with other appliances - a refrigerator, TV, computer, washing machine. Therefore, the load on the network will be significantly higher than the power of the heater.

In some cases, replacing the electrical wiring in the apartment with a cable of a larger cross section will help. To connect a flowing water heater, it is necessary to draw a separate line and install an RCD.