To make a boiler of indirect heating from heating. Do-it-yourself indirect heating boiler - types, advantages, disadvantages and manufacturing technology

Owners of private housing have to use various heating equipment, which requires significant maintenance and efficient operation. An indirect heating boiler is an excellent addition to a gas and electric heating system. The device reduces energy consumption for heating water and ensures its constant flow.

What is an indirect heating boiler

An indirect heating boiler is a water heating tank that functions in conjunction with central heating devices . Unlike traditional water heaters, an indirect type boiler does not require an electrical connection.

Indirect heating boilers may have a different design, but they all heat water using the energy of the boiler coolant

Water heating occurs due to heat exchange between hot water flowing through the heat exchanger and cold water, which is filled with a boiler tank. Externally, the boiler is a cylindrical container with a capacity of tens to several thousand liters.

Indirect type water heaters are used both in private houses, the owners of which do not have the ability to connect to autonomous centralized heating, and in large industries where a large amount of hot water is required.

Advantages and disadvantages of indirect heating equipment

Among the advantages of an indirect type boiler are:

• economy (no electricity costs);
• high performance of the equipment, limited only by the power of the heating boiler;
• lack of direct contact between running water and coolant;
• the possibility of consuming thermal energy from several sources at once to increase the power and efficiency of the boiler.

Significant disadvantages of the equipment include:

Video: experience using an indirect type boiler

Types of indirect heating boilers

Modern indirect type boilers have a variety of designs and shapes. In addition to the round thin-walled tank, there are boilers that have a more complex structure, allowing the equipment to be more economical and efficient. Classification of equipment is carried out according to several criteria.

Types of heat exchanger

Indirect water heaters can have a heat exchanger of various designs:

• single-circuit coil - a spiral metal thin-walled pipe located inside a capacitive tank. Due to the circulation of the coolant through the pipe, the coil heats up and transfers thermal energy to the cold water that is in the tank. This is the simplest and most affordable design on the market;

  Indirect heating boiler with a single-circuit coil - the simplest and most affordable option

• double-circuit coil - a design similar to the option described above with the only difference that the water heater provides simultaneous supply of heated water and coolant for central heating. Such equipment is somewhat more expensive than a simpler analogue, but much more efficient when it is necessary to heat a large amount of water;
• tank-in-tank design - the equipment has a tank consisting of larger and smaller containers. Inside the large tank is the water that needs to be heated, and inside the smaller tank is the coolant. Such boilers not only have a high rate of water heating up to 75–90 ° C, but are also made in larger cases;

  Boiler of indirect type using "tank in tank" technology

• combined boiler - the design of a water heater with two heat exchangers. The first is a conventional coil made of aluminum or copper pipe. The second is made in the form of a tubular electric heater. Combined models have a rather high cost, but also combine the functions of different devices.

Heat exchanger material

For the manufacture of a heat exchanger in the form of a coil and an internal tank, materials such as:

• brass - low thermal conductivity, 100–110 W/(m∙°C);
• aluminum - average thermal conductivity, 200–240 W/(m∙°C);
• copper - high thermal conductivity, 360–390 W / (m ∙ ° C).

The higher the thermal conductivity of the heat exchanger material, the more expensive the boiler.

Installation method

Depending on the installation method, the devices are divided into two types:

Layout method

According to the method of arrangement of structural elements, water heaters are divided into two types:

Choosing a boiler for self-production

The general arrangement of an indirect heating boiler is quite simple - with the ability to work with power tools and welding, a water heater can be made independently.

For use in a private house where a family of three lives, a vertical boiler with a copper heat exchanger is sufficient. If the family is large, then it is better to choose a floor structure. This will make it possible to make the equipment of the required capacity, as well as to carry out proper thermal insulation of the tank.

It is not advisable to make a boiler with a tank-in-tank heat exchanger on your own. Firstly, you will need to find or make the tank itself, which will require a lot of time and effort. Secondly, in the manufacture of large-volume water heaters, the dimensions of the structure increase several times.

In addition, factory models manufactured using this technology have a special coating (enamel, ceramic, silver plating) on ​​the heat exchanger. It will not work to repeat the application of such a coating in "garage conditions".

Design features of an indirect boiler

The indirect type boiler is a tank made of stainless steel. The inner walls of the tank are covered with a special material, which not only protects the surface of the water heater from corrosion processes, but also reduces the concentration of harmful bacteria and microorganisms.

Scheme of the device of an indirect type boiler with a single-circuit coil

The rest of the boiler of the simplest design consists of the following components:

• heat exchanger - spiral tube or smaller tank. Depending on the volume of the tank, it can be located in its upper and lower parts;
• inlet pipe - fitting in the lower part of the device for supplying a pipe with cold running water;
• outlet pipe - a fitting for connecting a hot water outlet pipe;
• magnesium anode - additional protection of the tank walls from corrosion processes;
• internal thermometer - a device for measuring the temperature of water heating;
• thermostat - a device that prevents overheating of equipment;
• control unit - rotary knob with divisions for setting the heating temperature;
• thermal insulation - a layer of insulating material that helps maintain the desired temperature of heated water;
• outlet - valve for draining stagnant water;
• revision - a large diameter hole designed for maintenance, repair and modernization of the boiler.

The design of new tank models may differ slightly and have a number of improvements from manufacturers, but in general, any indirect type boiler consists of the listed elements.

The principle of operation of the boiler

An indirect type boiler is part of the heating system and is connected directly to a gas, electric or solid fuel boiler, which heats the coolant using the energy released during fuel combustion.

The heat carrier circulates through the DHW system and passes through the heat exchanger located in the indirect heating boiler. Due to the release of thermal energy from the hot coolant, cold water is heated, which fills the device reservoir. From it, heated water is transported through the outlet through the pipe to the bathroom, to the kitchen and to other rooms with sanitary equipment.

An indirect type boiler can work with any type of heating boiler

When the heating boiler is turned off or it switches to an economical mode of operation, the coolant cools down quickly. Thanks to the design, which provides for the insulation of the walls of the tank with urethane foam, the water in the tank cools very slowly. This allows you to use the entire volume of warm water for several more hours.

Calculation of the main parameters of the boiler

Before proceeding with the search for material and directly manufacturing, it will be necessary to calculate the minimum volume of the tank and the working length of the heat exchanger.

Volume and shape of the tank

The volume of the water tank directly depends on the number of residents permanently residing at the place where the equipment is installed. It is believed that a person consumes up to 80 liters of water per day. For the calculated value, it is recommended to take 45-50 liters per person. If the norm is exceeded, the water in the tank will stagnate, which will certainly affect its quality.

The shape of the tank is selected taking into account the pressure force in the plumbing system. If the pressure is low, then the use of homemade boilers with a square tank is allowed. . At high pressure in the system, only equipment with a rounded bottom and top can be used.

Boilers with a storage tank of square and rectangular shape can only be used in water supply systems with low operating pressure

The fact is that increased pressure contributes to the occurrence of bending forces on the walls of the tank, so a square or rectangular tank can be deformed. A container with a round bottom is more resistant to deformation due to better streamlining.

Heat exchanger power and length

In vertical models of indirect heating, a copper coil is usually used as a heat exchanger, located between the inlet and outlet.

Boiler coil made of copper pipe

For self-production, it is best to use a copper pipe with a diameter of 10 mm. Such a product can be easily bent by hand without the use of any tool. When using a metal-plastic pipe, it should be borne in mind that the heating temperature of the coolant should not be more than 90 ° C, otherwise the pipe will deform and the joints will leak - this will lead to mixing of water in the tank.

The length of the pipe required for the manufacture of the coil is calculated by the formula L \u003d P / (3.14 ∙d ∙∆T), where:

• L - pipe length (m);
• d - pipe section (m);
• ∆Т - temperature difference between heated and cold water (o C);
• P is the power of the heat exchanger for every 10 liters of water (kW).

According to experts, for every 10 liters of water there should be at least 1.5 kW of thermal energy. With this in mind, you can calculate the length of the pipe for the manufacture of the coil.

For example, we will calculate the material for the coil, which will be installed in a boiler with a capacity of 200 liters. The temperature of the cold water supplied to the tank will be 15 ° C, and after heating it is necessary to obtain water with a temperature of 80 ° C: L \u003d 1.5 ∙ 20 / (3.14 ∙ 0.01 ∙ 65) ≈ 15 m.

Table: length of copper heat exchanger for boilers with a capacity of 50–200 liters

The number of turns of the coil depends on the method of bending and the distance between the elements. Usually the coil is positioned so that the distance between the coils and the walls of the tank is at least 10-12 cm. The distance between the coils should not be less than 5 cm. Calculated values ​​for storage tanks of various volumes can be seen in the table above.

If an indirect type boiler must be equipped with a tubular electric heater, then the power is calculated based on the fact that a heating element with a power of at least 1.5 kW is required to quickly heat 50 liters of water. In addition, any combined boiler must be equipped with a thermostat.

Necessary materials and tools

The storage tank of the device is made of heat-resistant plastic, stainless steel, aluminum or steel with a ceramic coating. As blanks for the tank, you can take plastic food barrels, aluminum tanks or an unnecessary gas cylinder.

For the manufacture of a heat exchanger, as mentioned above, it is better to use a round or square copper pipe. When assembling a heat exchanger from square pipes, bends under 90 o will be required.

As a tool, you need to prepare:

Fittings, drain cock and other connecting elements are selected based on the dimensions of the connected pipe. Additionally, an FUM tape, a safety valve, a magnesium anode and a nozzle for its installation are purchased.

Preparing a tank for assembling a water heater

For the manufacture of an indirect type boiler, you can use a new or old gas cylinder. This tank is made of thick stainless steel 3-4 mm thick and is perfect for working with hot water.

Before assembling the heating structure, you will need to carefully prepare the cylinder. To do this, the product is cut in half with a grinder. The inner surface of the container is cleaned using an angle grinder with a suitable nozzle.

Before assembling the boiler, the cylinder must be opened and the inner surface cleaned

After that, the inside of the cylinder is washed, dried and covered with nitro-primer paint. These works should be carried out without fail, otherwise, after the boiler is put into operation, the heated water will smell like gas.

When using a tank from other metal containers, preparation is carried out in a similar way.

Manufacture of an indirect heating boiler

The process of assembling a water heater may vary depending on the type of construction, but in most cases, equipment for gas and electric boilers is manufactured in the following sequence:

1. In a pre-prepared cylinder, two holes are drilled using an electric drill with a crown nozzle. One hole will be located at the bottom and used to supply cold water, the other - at the top to drain hot.
2. The resulting holes are cleaned, fittings and ball valves are mounted in them. Then another hole is drilled in the lower part, into which a tap is installed to drain the stagnant water.

   Holes are made in the lower and upper parts of the cylinder into which taps are inserted to connect water pipes

3. For the manufacture of the coil, a copper pipe with a diameter of 10 mm is required. A spiral bend is best done with a pipe bender. If there is no such tool, then you can take any round blank - a large diameter pipe, a log, a barrel, etc.

   Making a coil for a water heater from a round copper pipe with a diameter of 10 mm

4. The coil is being manufactured according to the calculations made earlier. The ends of the heat exchanger are bent in one direction at a distance of 20–30 cm. Two holes are drilled in the lower part of the cylinder to mount the coil. Threaded fittings are installed and welded into them.

   A threaded fitting is used to connect the coil to the boiler

5. Before installation, the coil is lowered into a bucket or large container of water and blown through. If the design is tight, then the coil is lowered into the cylinder, set relative to the inlet and outlet and brewed.
6. If the cylinder was cut in the middle, then an anode is mounted in the upper part. To do this, a hole is drilled, where a threaded nozzle is screwed in, and a magnesium anode is already mounted in it. If the container is assembled from three separate parts - bottom, lid and central part, then the anode can be installed at the last stage.
7. Heat-insulating material is mounted on the outside of the boiler. It is best to use sprayed polyurethane. Before application, all nozzles are protected with dense polyethylene and cloth. If funds are limited, then you can use ordinary mounting foam, which, after hardening, turns into reflective insulation.

   For thermal insulation, it is easiest to use mounting foam and foil insulation

8. Attachments are welded to the back of the boiler for hanging on brackets. For floor boilers, support legs from a steel angle or fittings are welded to the bottom of the equipment.

At the final stage, fittings, taps are screwed on and the top cover is mounted. If possible, the cover can not be welded, but clamping fasteners can be made of steel wire with a cross section of 3 mm.

In the manufacture of a boiler for use with solid fuel boilers, instead of a copper coil, a U-shaped steel pipe is used, which is mounted at the bottom of the device. On the side of the furnace or boiler, the pipe is connected to the outlet. From the boiler, the pipe is removed and connected directly to the chimney.

Video: indirect heating boiler from a gas cylinder

Boiler piping for indirect heating

Three working schemes are used to connect an indirect type boiler:

1. Trim with a three-way valve.
2. Connection to two circulation pumps.
3. Tying with the use of hydraulic arrows.

Trim with three-way valve

The piping scheme using a three-way valve is most often used, especially when a large amount of hot water is consumed. For this, two heating circuits are mounted in the system. The first is the main circuit used for space heating. The second one is designed to heat water in the boiler.

The piping scheme for an indirect heating boiler with a three-way valve is most often used

For uniform distribution and regulation of the volumes of the coolant entering the boiler, a three-way valve is used, which is connected to the thermostat.

The principle of operation of the system is quite simple: if the temperature in the storage tank drops below the set value, the valve redirects part of the coolant to heat the water in the boiler. After heating the water, the coolant returns to the heating circuit.

Piping with two circulation pumps

An indirect type water heater is installed in a system with two circuits: a boiler and heating. A recirculation pump is used to regulate each individual circuit. In this case, the pump is mounted on the boiler circuit in front of the heating equipment pump.

In the piping scheme with circulation pumps, the supply of coolant to the boiler is automatically regulated

Both pumps are connected to the boiler thermostat. When the water in the boiler cools down, the thermostat turns on the corresponding pump, which redirects part of the flow from the heating and vice versa.

Strapping using a hydraulic gun

Piping using a hydraulic separator is used in central heating systems consisting of two or more circuits. If in a system without a hydraulic arrow, the redistribution of flows in the circuits necessarily affects the operation of any equipment, then when it is installed, a smooth redistribution of cold and hot flows occurs.

The boiler piping scheme with the installation of a hydraulic separator provides the smoothest distribution of cold and hot water flows

For example, a hydraulic separator must be installed in private houses, where, in addition to the indirect heating boiler, an underfloor heating system is connected to the central heating system. The scheme of this strapping is rather complicated in execution, especially with a large amount of equipment. Therefore, it is better to entrust the work on its installation to specialists.

Coolant recirculation system

This piping scheme is used if it is necessary to minimize the rate of water heating in the boiler, since with frequent downtime, the water in the tank cools quickly, and it takes 30 to 60 minutes to reheat it.

To do this, a "return" to the water heater is mounted in the pipeline going from the boiler to the water tap. A circulation pump connected to a thermostat is also installed in this area.

When the water in the pipeline stagnates and cools, the thermostat turns on the pump, which redirects the cooled water back to heating. When the water supply is resumed, the user does not have to wait for it to heat up, as it will already be warm.

Features of the operation of an indirect boiler

To function properly, the boiler must be placed on a flat, solid surface. When installing a wall-mounted boiler, appropriate fasteners are used, designed for the weight of the device filled with water.

A tank with a capacity of up to 100 liters is mounted on dowel-nails 100 mm long, and for equipment with a capacity of 150–200 liters, fasteners up to 150 mm long must be used. It is advisable to hang the boiler on walls made of concrete or brick.

A non-return valve must be installed on the cold water supply line before the boiler, which will prevent hot water from entering the cold circuit.

The indirect heating boiler is connected to the system through a check valve

The main problem in the operation of indirect type boilers is the formation of scale inside the storage tank and heat exchanger when water is heated above 80 ° C. Therefore, with a moderate consumption of hot water (washing dishes), it is advisable to reduce the temperature to a comfortable 40–50 ° C. This will significantly prolong service life of the equipment.

Boiler cleaning and repair

If the boiler is used frequently, the tank should be cleaned once a year. To do this, a concentrated solution of citric or acetic acid is pumped into the tank and heated to a temperature of 80–90 ° C. After 20–30 minutes, the liquid is drained. If the heating system uses a coolant in the form of ordinary water, then for the purpose of prevention, the heat exchanger is cleaned in a similar way.

If a leak occurs at the pipe junctions, it is necessary to disassemble the problem area and reinstall it using a larger amount of sealant. Instead of plumbing linen, more modern materials should be used, such as FUM tape or plumbing thread.

Video: installation and piping of an indirect type boiler

An indirect type water heater is equipment that must be installed in every private and country house that uses gas or electric heating. This will reduce the cost of hot water supply by 15-20%, which will be a very tangible savings in the face of ever-increasing tariffs.

Boiler installation and installation with connection.

And the instruction for the boiler you will need is this:

1.scheme for connecting the boiler to the hot water pipes.

2. Scheme of connecting the bolernaya to electricity.

How to make a homemade boiler - a water heater for heating water

Where the electric heater is screwed in (instead of the factory brass screw), a steel nut with a diameter of 32 mm must be welded (buy it at the plumbing market or in a store). Before welding it, screw the threaded thread into the nut so that it does not lead, otherwise, during the assembly of the water heater, the electric heating element will not fall into place (it will not screw in).

Homemade boiler for heating water with electricity, indirect and storage water heater, diagram, instruction, price, connection - farmer guide website

Let's make an electric water heater and a boiler for heating water

How to make an indirect heating boiler with your own hands?

Not a single industrial, residential or office space can do without hot water supply. For such purposes, most often use special water heaters. They can be purchased at the store (how to choose a boiler), or you can save a little and do it yourself . Consider the second option using the example of an indirect heating boiler.

The principle of operation of the indirect heating boiler .

If we talk briefly about the working scheme, then for the device under consideration it is as follows: the coolant moves in the tank of the required volume and heats up to the desired temperature, after which it gives off heat to cold water, which is filled with the case. In this case, the best option for a telp source is a parallel type connection to the central heating system.

If visually, then the indirect heating boiler is represented by a container made of corrosion-resistant material and attached pipelines through which the coolant moves. For draining and filling water in the first there are two holes located in the lower and upper parts. For convenience, these holes are also equipped with taps.

The process of manufacturing an indirect heating boiler with your own hands.

The hand-made manufacture of an indirect heating boiler takes place in several stages:

1. Making a tank.

For the tank, you will need a container made of materials that are most resistant to moisture. These materials include: aluminum alloy, plastic and stainless steel. Ordinary steel can also be used, but only with special processing.

Most often, gas cylinders are used as a tank.

By the way, if there was gas in the cylinder before, then when using it as a boiler tank, the first couple of weeks after the latter was put into operation, a specific smell may be present in the water.

2. Installation of the coil.

As a coil for a boiler, pipes of small diameter made of metal-plastic or metal are usually used. The main thing here is to ensure the maximum proximity of the coolant and water.

Plastic or steel pipes can serve as a good starting point for obtaining a coil of the desired diameter. Their fastening is initially made inside the tank. Further, sanitary fittings are soldered to the ends of the pipeline. At this time, it is important not to forget to immediately supply the system with a tap or distribution fittings, which are located in the upper third part of the tank - to perform the function of extracting heated water.

3. Thermal insulation.

It is needed to increase the efficiency of the unit and minimize heat losses. This is usually done in one of the following ways:

• for the tank, two containers of different diameters are taken at once, and the space formed between them is isolated, this makes it possible to significantly increase the productive capacity of the system and at the same time reduce energy consumption;
• the entire perimeter of the tank is foamed with mounting foam or covered with heat-insulating material (wire ties or various types of glue can be used as fastening in this option).

Important!

Do-it-yourself indirect heating boilers made with their own hands have one drawback - the formation of deposits on the coil. Therefore, for the high-quality functioning of the unit, it is necessary to clean the spiral at least 2 times a year.

How to make a water heater with your own hands

How to make an electric water heater with your own hands

The problem of hot water in the country is always relevant, and the problem of organizing hot water supply can be solved in different ways. One way is to connect the boiler to gas or electricity.

But a more optimal way is to make an electric water heater with your own hands. A homemade water heater will cost much less, and it will take very little effort to make it. How to make a water heater with your own hands is described below.

This do-it-yourself device allows you to save money and eliminates the worry of how to provide a private house or cottage with cheap hot water, especially in winter.

On sale there is a washstand with a built-in heating element and a plastic tank of 10 liters at a very “democratic” price, only water must be poured into it through the lid. And this means that again you will have to use various ladles and jars, but this is not very convenient.

At present, it is not difficult to install a 120-liter tank and a pump in the kitchen (with autonomous water supply, all these designs are always available).

The pump allows you to fill a tank of this volume in 10 minutes without any hassle. This amount of water can be enough for a family of 4-5 people for 2 days without observing the austerity regime. In this case, the water from the tank should be supplied to the sink by gravity, i.e., the tank can be installed in a room adjacent to the kitchen on a high rack. For "gravity" such pressure should be enough.

DIY homemade electric water heater

For a water heater with your own hands, you need to complete the system for automatically filling the tank. For these purposes, it is necessary to cut the appropriate hole - a toilet valve with a float and slightly alter the design. Inside the tank there are stiffening ribs for which the float will touch, so you need to shorten the rod on which it rests, slightly bending it “in place” in order for the system to work.

Before you make a water heater yourself, consider where the tank will be installed. In order not to clutter up the kitchen, place it in a utility room that communicates with it, where the storage tank is located, connecting it to the sink mixer using a hose from the washing machine.

Recommended for the heating element system - "Ariston" for 1.2 kW with a built-in thermostat. Under it, you should make a fitting hole in the tank and cut out the gaskets from the rubber. The recommended electrical circuit involves the installation of a circuit breaker in the kitchen and two indicators placed in a neat box.

One indicator should show that the homemade electric water heater is on, and the second should light up (only when the thermostat will turn on the heating). On the body of the heating element is the corresponding connector. At night, you can turn off the toggle switch of the circuit breaker, thereby turning off the entire system.

It is recommended to wrap the water tank with insulation, and make a plywood box on top. Then the design will keep warm and look more neat, and the top of the box, in addition, can be used as another shelf in this case.

The insulation of the tank will keep the water warm until the morning, so in the morning the heating element can be turned on for a short time.

You can also use a plastic tank, but it is unreliable. It is better to use a stainless steel tank as a tank, for example from an old washing machine. This container is quite suitable and durable.

Such a system usually works for quite a long time. The problem can occur in winter due to freezing of water in the system. Therefore, water for the winter period must be drained if you do not plan to use it regularly.

DIY indirect heating boiler #8212 simple and economical

The problem of hot water becomes relevant where there is no centralized hot water supply: in summer cottages, private urban and country houses. Today, the installation of a ready-made device for heating water to the required temperatures requires serious investment. An alternative way to supply hot water is an indirect heating boiler. which you can make yourself. Its advantage is that hot water supply to residential premises is carried out in an economical mode and at minimal financial cost.

Features and scheme for manufacturing an indirect heating boiler with your own hands

In appearance, an indirect heating boiler is a large storage capacity, independent of energy sources (gas, electricity, etc.). Inside the tank, made of corrosion-resistant material, a spiral tube is installed through which the coolant circulates. Cold water is supplied to the tank through the inlet pipe, usually located at the bottom. The heating of water in the boiler occurs evenly due to the moving coolant of the heating system. The outlet pipe for hot water is installed at the top. For ease of use, the pipes are equipped with ball valves. Outside, the tank is covered with a layer of thermal insulation.

A drawing for the manufacture of an indirect heating boiler with a volume of 100 liters is shown below:

Schematic diagram of the boiler:

Heating water from the boiler enters the tank of the water heater, where, passing through a spiral tube, it is converted into cold water at the outlet. The return chilled water goes back to the boiler.

Advantages and disadvantages of an indirect heating boiler

Pros of using a DIY boiler:

• connection to the central heating system
• installation near a heating boiler
• low installation costs
• significant reduction in energy consumption
• providing water at a constant temperature.

The disadvantages include the following:

• the installation of the boiler requires a large area or a separate room
• it takes a long time to heat a large volume of water, while heating the premises will be carried out at a lower intensity
• rapid build-up of deposits on the serpentine tube requiring chemical or mechanical cleaning twice a year.

This option for obtaining hot water is suitable during the heating season. At other times, the role of the heat carrier can be performed by an electric heating element built into the boiler tank.

Then the heating of water will be carried out using electricity. In this case, you can turn on the boiler at night, when night, low tariffs are in effect, or as needed.

Making a boiler with your own hands

Due to the rather simple principle of operation, such a device can be made independently. Now let's look at how to make an indirect heating boiler with your own hands.

All work on the manufacture of a water heater consists of assembling the components of the structure:

A tank is used as the capacity of the boiler. Its volume depends on the needs of the owners of the house in hot water and is calculated from the amount of 50-70 liters per person daily. Approximately for a family of 4, a 200-liter boiler is suitable.

For the heating device, the tank must be made of stainless steel, aluminum alloys or other material resistant to corrosion. As an alternative - a gas cylinder, but its walls must first be cleaned and primed. Without this action, hot water will smell like gas.

5 holes are made in the tank: 2 on the side for mounting the coil, one at the bottom for the inlet pipe, one at the top for water extraction and one at the bottom for the drain tap. To use the boiler outside the heating season, it is necessary to provide for the installation of a heating element. A bottom hole is also drilled for it. Locking elements or ball valves are attached to the holes made.

A copper or brass tube is suitable for this element, the diameter and length of which depend on the volume of the tank. On average, for every 10 liters, 1.5 kW of heat output of the serpentine tube is calculated. You can use a tube made of metal-plastic or other metal with good heat dissipation.

The tube is wound in a spiral onto a cylindrical mandrel. To do this, you can take a log or a pipe of large diameter.

When winding the coil, it is important to monitor the turns:

• for the best contact of the heating surface of the tube with the heated water, the coils should not come into contact with each other
• do not coil with excessive force, then it will not be easy to remove the coil from the mandrel.
• The number of turns on the coil is calculated from the volume and height of the tank.

thermal insulation

Outside, the tank must be covered with a layer of insulation. It is necessary to increase efficiency and reduce heat loss. To insulate the container, mounting foam, mineral wool or any other heat-insulating material that is attached to the base with wire, glue or strip ties is suitable. For a neat appearance, it is better to cover the tank body with thin sheet metal or foil insulation.

You can also insulate the tank with another container of a larger diameter. To do this, a do-it-yourself boiler is inserted into a large tank, and the wall, according to the principle of a thermos, is filled with insulating material or foam.

The assembly of a do-it-yourself boiler is carried out after the preparation of all components:

• the coil in the center or along the walls is mounted inside the tank, branch pipes are soldered to its inlet and outlet pipes
• for a vertically standing boiler, supports are welded to the bottom, for a hinged device - “ears” loops
• heating element is installed
• the boiler is tightly closed with a lid
• connecting the coil according to the scheme for manufacturing an indirect heating boiler with your own hands to the heating system circuit
• water inlet/outlet connection
• piping to the kitchen or bathroom at the draw-off point.

How to make an indirect heating water heater with your own hands?

Many private houses do not have hot water supply equipment, and residents experience great problems in this regard. Domestic needs are always solved through the use of hot water, and its production becomes quite troublesome. However, there are several options for getting out of this situation: a gas water heater, a double-circuit boiler, an electric water heater, # 8212, the purchase and installation of which requires considerable financial investments. But, there is an alternative way to manufacture and install a hot water supply system - a home-made indirect heating boiler. Its advantage lies in the economical hot water supply of residential premises with minimal cash investment.

Do-it-yourself water heater

Where to begin

A boiler is a system that heats water to provide a room with heat and hot water. Accordingly, an indirect heating boiler is a water heater storage device that does not require additional power sources to reproduce hot water supply.

Any design of a water heater consists of a container of sufficient volume, and a heating element located inside it, which is responsible for supplying heat. In the process of increasing the temperature of the heating element, the water filling the container is heated to the required level. More preferable is the parallel connection of the boiler to the house heating system.

The basis of the water heater is the water tank

When choosing a container for creating a homemade water heater, one should take into account the tendency of the material used to be affected by corrosion. As a suitable option, you can use an aluminum alloy, plastic or stainless steel, as well as simply a steel container that has undergone preliminary external processing with the necessary means of protection against the damaging effects of moisture.

This container is equipped with two openings: one on top of the body - for the return of hot water, the other from below - for the flow of running cold water. Ball valves are built into each of these holes so that operational actions do not cause difficulties in use.

Do-it-yourself coil

An important component of the boiler is the presence of a coil for the movement of the primary coolant. The material used can be a pipe made of metal or metal-plastic of small diameter. The determination of the diameter of the coil depends on the preferences of the manufacturer, the main condition is only that the contact with water is maximum.

For the convenience of creating a serpentine spiral from a tube, you can use any pipe or log of a cylindrical shape that is suitable in diameter. One end of the tube must be fixed on the rod and make smooth rotations, controlling the density and freedom of the turns, so that the resulting spiral can then be removed from the rod.

The coil is best made from a copper tube

Since hot water rises when the temperature rises, the tap that supplies it is mounted at the top of the tank.

It is worth noting the fact that the coil tends to form scale, by depositing metal salts contained in water. Therefore, this system requires periodic cleaning at least twice a year.

Implementation of thermal insulation

Thermal insulation in the design of the boiler is necessary to increase the degree of heat retention. For this, any material for thermal insulation used in construction can serve: isolon, foam, polyurethane foam, etc. It is fastened with glue or wire ties, covering the entire perimeter of the container. This casing allows not only to keep the heat of hot water in the boiler for a long time, but also to reduce the time of its heating, which will positively affect the flow rate of the coolant, increasing its efficiency.

Without high-quality thermal insulation, the water will quickly cool down

Sometimes the double container method is applicable, that is, placing a container with a smaller diameter in a container of a larger diameter. The space created between them also performs the function of thermal insulation.

We make a boiler ourselves

In order to make an indirect heating boiler with your own hands, you need a certain range of knowledge and improvised materials for its manufacture.

For work you will need:

• gas bottle
• nitro primer
• nut diameter 32 mm
• plastic tubes
• coil
• welding machine.

First, the gas cylinder intended for work is cut into two parts. It is advisable to use a new cylinder, since the one that has been in use for several months will give the water a peculiar smell. In the event that it is problematic to get a new cylinder, then we use a nitro primer and process the entire inner surface of the gas cylinder with it, followed by a thorough flushing.

The tank can be made from a gas cylinder

Secondly, a nut with a screwed threaded thread is welded into place for installing the coil. The tube intended for hot water is installed to the very top of the device. A tube for cold tap water should have the following scheme: one end is threaded, and the other end is provided with holes and a plug on the sides. Such a system is designed to prevent mixing of hot and cold water.

Thirdly, by welding we form a hole for installing a heat exchanger. Depending on the intended type of installation of this system, corners or lugs can be welded as a means of fixing the boiler to the wall. The next step is the installation of a heating element with a signaling electric sensor.

Fourthly, for greater reliability, it is desirable to wrap the boiler with heat-insulating material. Connect all hoses and pipes to the general system of the house, special attention should be paid to the pipe connected to cold water, it must have a check valve. This measure will protect against water runoff from the boiler and protect the heating element from the possible risk of burning.

Alternative indoor hot water source

A fairly simple and effective way is to create a hand-made indirect water heating boiler from the following materials:

A case is constructed from the boards, inside of which an aluminum sheet is lined. Furrows are formed with a copper pipe, and a copper collector is installed. On one side is the entrance, and on the other - the exit. Such a heating system allows heating water in the required volume.

Copper manifold with pipes in the housing

The technological process is practically unchanged, it should only be noted that for better heat absorption it is worth using glass and specialized paint.

The undoubted advantage of making a homemade water heater is the minimum financial and physical costs. In addition, there are a huge variety of options for possible water-heating structures, depending on the compliance with the conditions of the room where they are installed.

Bulk water heater #8212 is an excellent solution for a country house or country house.

How to make a water heater with your own hands

How to make an electric water heater with your own hands The problem of hot water in the country is always relevant, and the problem of organizing hot water supply can be solved in different ways. One of the ways is to…

Do-it-yourself indirect heating boiler is carried out in accordance with the standard scheme, which necessarily takes into account all the technological features and characteristics of reliable and durable water-heating equipment.

The device and the principle of operation of such a device will be considered in more detail.

Particularly popular at present are modern storage-type electric boilers, which are perfect for continuous or periodic operation, both in private households and in apartment buildings.

The standard volume of the storage tank may vary, and is selected based on the number of consumers.

This type of domestic hot water device is connected to the water supply directly after the main pipeline system, which makes it possible to provide several points of analysis with hot water. Additional options in such a water heater are represented by special thermostats.

The device of a traditional boiler is represented by an outer casing and a standard internal storage tank, as well as a durable anti-corrosion coating and additional components.

Scheme of the device of a home-made indirect heating boiler

The standard layout of a water heater device in the form of a boiler may have significant differences depending on the type and design features. Indirect heating devices are not capable of producing thermal energy on their own, but can be equipped with built-in heating elements, through which the temperature regime of water is effectively maintained within predetermined limits.

The device diagram assumes the presence in the design of the main components represented by:

• storage tank;
• outer case;
• thermal insulation;
• heat exchanger;
• a place for connecting an additional heating element;
• revision hole;
• cold water inlet;
• input and output for the thermal carrier;
• thermometer connection point;
• recirculation line;
• outlet for hot water;
• magnesium anode.

Inside the insulated tank there is a built-in heating element with a supplied heat carrier. Cold water enters through the bottom of the tank, and hot water is taken from the top.

Water heating equipment of this type is equipped with a protective magnesium anode. The most modern and expensive models are supplied with a pair of redundant coils. Maintaining the temperature regime is provided by a heating element with a thermostat built into the upper part of the tank.

Heating scheme of two types of boilers

Boilers with an indirect type of heating are also produced, completely devoid of a coil. This special design is called a "tank in a tank", which is due to the presence of a second tank inside one tank. Heating of water in such water heaters occurs inside the tank, and the movement of the heat carrier is carried out between the walls.

Factory models of boilers with indirect heating and a circulation pipe are equipped with mandatory elements, represented by a magnesium anode and a safety group, as well as a temperature sensor.

How to make an indirect heating boiler with your own hands - manufacturing procedure

For self-production of a large storage tank (tank), independent of energy sources, a tank made of corrosion-resistant materials is used, as well as a spiral tube with a circulating coolant.

Boiler in the boiler room

Uniform heating of the water inside the boiler tank is ensured by the movement of the heat carrier from the heating system, and a high-quality heat-insulating layer contributes to maintaining the temperature regime. Ease of use is due to the installation of special fittings in the form of ball valves.

Capacity selection

A reservoir or storage tank can have almost any size and volume. The second criterion directly depends on the number of consumers and the standard consumption of hot water. As a rule, the consumption of hot water is about 50-70 liters per consumer, so the approximate volume of the tank for a family of four is about 200 liters.

boiler tank

It is important to remember that the volume of the tank can vary significantly depending on the number of consumers and serviced hot water outlets.

Tank manufacturing

For self-manufacturing of the tank of the water heater, it is recommended to use stainless sheet steel, as well as alloys based on aluminum or other materials that are sufficiently resistant to corrosion changes.

As an alternative, a conventional gas cylinder can be used, the walls of which must first be cleaned and primed, which will prevent the appearance of an unpleasant odor in hot water.

Tank homemade indirect heating boiler

Five holes should be made in the prepared tank, a pair of which are made on the side and used to install the coil, and two in the lower and upper parts for cold water inlet and hot water outlet.

To make the operation of the hot water boiler trouble-free without activating the heating system, it is necessary to install a heating element, for which it is necessary to drill a hole in the lower part, providing it with shut-off reinforcing elements or ball valves.

thermal insulation

The category of the most accessible and highly effective heat-insulating materials includes modern foamed polymers, represented by polystyrene foam or polystyrene foam, as well as polyurethane foam and polyisocyanurite.

When using heat insulators of this type, it is mandatory to use a sealed protective casing, which completely excludes the ingress of toxic fumes into the room.

It is important to remember that the best option is the thermal insulation of the storage tank - basalt wool, which has a density in the range of 35-50 kg / m 3.

Coil manufacturing

For independent production of a round steel coil, a pipe bender is used, but if necessary, a square heating element is equipped, all parts of which are represented by segments of stainless steel pipe connected by electric welding.

The heating power level is calculated according to the formula: Q = K x A x dT, where the indicators are presented:

• K - heat transfer coefficient;
• A - area of ​​the total surface of the heating element;
• dT is the temperature difference between the heat carrier and the heating water.

The coil can be placed both in the central part of the tank and along its walls.

The configuration and dimensions of the tank affect the total number of turns as well as the diameter of the heating element.

During the operation of water-heating equipment, there is an accumulation of scale and various deposits on the heating element, therefore, periodic cleaning of the coil is a mandatory maintenance measure for the boiler.

final assembly

The process of self-assembly of a water heater consists of the following phased activities:

• coil installation;
• soldering nozzles on the inlet and outlet pipes;
• welding of supporting legs or suspension loops;
• installation of a heating element;
• tight fitting lid.

It should be noted that special attention should be paid to the thermal insulation of the tank with basalt mats and their fixation on the surface of the outer walls.

To make the operation of the water heater completely safe, it is necessary to screw on the protective steel casing, coated with powder paint or galvanized.

Connection

At the final stage, the heating element is connected to the heating circuit in accordance with the standard scheme. Then it is necessary to connect the inlet and outlet pipes, as well as to make the wiring at all points of water analysis.

Possible scheme for connecting an indirect heating boiler Omicron

Before you start testing the performance of your self-made waterheating appliance, you should check the correct connection of all elements.

The main stages in the manufacture of a boiler are the preparation of a suitable container, the manufacture of a coil, the provision of thermal insulation and the assembly of the device, including connecting the coil to the heating system, organizing the supply of cold and hot water.

Related video

Many private houses do not have hot water supply equipment, and residents experience great problems in this regard. Domestic needs are always solved through the use of hot water, and its production becomes quite troublesome. However, there are several options for getting out of this situation: a gas water heater, a double-circuit boiler, an electric water heater, the purchase and installation of which requires considerable financial investments. But, there is an alternative way to manufacture and install a hot water supply system - a home-made indirect heating boiler. Its advantage lies in the economical hot water supply of residential premises with minimal cash investment.

Where to begin

A boiler is a system that heats water to provide a room with heat and hot water. Accordingly, an indirect heating boiler is a water heater storage device that does not require additional power sources to reproduce hot water supply.

Any design of a water heater consists of a container of sufficient volume, and a heating element located inside it, which is responsible for supplying heat. In the process of increasing the temperature of the heating element, the water filling the container is heated to the required level. More preferable is the parallel connection of the boiler to the house heating system.

When choosing a container for creating a homemade water heater, one should take into account the tendency of the material used to be affected by corrosion. As a suitable option, you can use an aluminum alloy, plastic or stainless steel, as well as simply a steel container that has undergone preliminary external processing with the necessary means of protection against the damaging effects of moisture.

This container is equipped with two openings: one on top of the body - for the return of hot water, the other from below - for the flow of running cold water. Ball valves are built into each of these holes so that operational actions do not cause difficulties in use.

Do-it-yourself coil

An important component of the boiler is the presence of a coil for the movement of the primary coolant. The material used can be a pipe made of metal or metal-plastic of small diameter. The determination of the diameter of the coil depends on the preferences of the manufacturer, the main condition is only that the contact with water is maximum.

For the convenience of creating a serpentine spiral from a tube, you can use any pipe or log of a cylindrical shape that is suitable in diameter. One end of the tube must be fixed on the rod and make smooth rotations, controlling the density and freedom of the turns, so that the resulting spiral can then be removed from the rod.

Since hot water rises when the temperature rises, the tap that supplies it is mounted at the top of the tank.

It is worth noting the fact that the coil tends to form scale, by depositing metal salts contained in water. Therefore, this system requires periodic cleaning at least twice a year.

Implementation of thermal insulation

Thermal insulation in the design of the boiler is necessary to increase the degree of heat retention. For this, any material for thermal insulation used in construction can serve: isolon, foam, polyurethane foam, etc. It is fastened with glue or wire ties, covering the entire perimeter of the container. This casing allows not only to keep the heat of hot water in the boiler for a long time, but also to reduce the time of its heating, which will positively affect the flow rate of the coolant, increasing its efficiency.

Sometimes the double container method is applicable, that is, placing a container with a smaller diameter in a container of a larger diameter. The space created between them also performs the function of thermal insulation.

We make a boiler ourselves

In order to make an indirect heating boiler with your own hands, you need a certain range of knowledge and improvised materials for its manufacture.

For work you will need:

• gas cylinder;
• nitro primer;
• nut with a diameter of 32 mm;
• plastic tubes;
• coil;
• welding machine.

First, the gas cylinder intended for work is cut into two parts.

Attention! Before cutting the balloon, it must be completely filled with water. Otherwise, an explosion will occur when cutting.

It is advisable to use a new cylinder, since the one that has been in use for several months will give the water a peculiar smell. In the event that it is problematic to get a new cylinder, then we use a nitro primer and process the entire inner surface of the gas cylinder with it, followed by a thorough flushing.

Secondly, a nut with a screwed threaded thread is welded into place for installing the coil. The tube intended for hot water is installed to the very top of the device. A tube for cold tap water should have the following scheme: one end is threaded, and the other end is provided with holes and a plug on the sides. Such a system is designed to prevent mixing of hot and cold water.

Thirdly, by welding we form a hole for installing a heat exchanger. Depending on the intended type of installation of this system, corners or lugs can be welded as a means of fixing the boiler to the wall. The next step is the installation of a heating element with a signaling electric sensor.

Fourthly, for greater reliability, it is desirable to wrap the boiler with heat-insulating material. Connect all hoses and pipes to the general system of the house, special attention should be paid to the pipe connected to cold water, it must have a check valve. This measure will protect against water runoff from the boiler and protect the heating element from the possible risk of burning.

Alternative indoor hot water source

A fairly simple and effective way is to create a hand-made indirect water heating boiler from the following materials:

• wooden boards;
• aluminum sheet;
• copper pipe;
• copper collector.

A case is constructed from the boards, inside of which an aluminum sheet is lined. Furrows are formed with a copper pipe, and a copper collector is installed. On one side is the entrance, and on the other - the exit. Such a heating system allows heating water in the required volume.

The technological process is practically unchanged, it should only be noted that for better heat absorption it is worth using glass and specialized paint.

The undoubted advantage of making a homemade water heater is the minimum financial and physical costs. In addition, there are a huge variety of options for possible water-heating structures, depending on the compliance with the conditions of the room where they are installed.

A bulk water heater is an excellent solution for a country house or a country house.

An indirect heating device is a special storage unit that heats water without using any additional power sources. Due to this, hot water supply of private housing construction requires minimal financial costs from their owners.

Indirect heating unit - hot water at a low price

The owners of many private houses are now installing double-circuit boilers in their homes. These devices are able to provide housing construction not only with heat, but also with hot water. Conventional heating units do not have such capabilities. This means that the homeowner has to look for other ways to generate heated water used for everyday household needs.

At first glance, the easiest way to solve such a problem is to purchase and install. It quickly heats the water, without any problems mounted with your own hands. But its cost, as well as space prices for consumed electricity, are not to the liking of every person. In addition, instantaneous water heaters often require a complete replacement of the electrical wiring available in the house. Such events cost a pretty penny.

A reasonable alternative to flow devices that heat water, according to many experts and ordinary consumers, will be an indirect heating device.

It is truly economical in operation and at the same time effectively performs its task. Unfortunately, the cost of a factory boiler is not available to everyone. In this case, home craftsmen have the opportunity to make such a unit on their own. A little later, we will describe in detail the process of its manufacture. But first, let's deal with the principle of operation of the equipment we are interested in.

A boiler is a tank inside which pipes are mounted. They circulate the coolant, which is used to heat the home. There is an inlet tube at the bottom of the tank. It is designed to supply cold water to the described container. The heating of the incoming liquid is carried out due to the moving coolant. Important feature! Outside, the tank is wrapped with a heat-insulating layer, due to which the heated water retains its temperature for a long time. The hot water pipe is usually mounted at the top of the tank. It is recommended to equip it with a conventional ball valve to simplify the operation of the device.

Pros and cons of equipment - the boiler is good, but far from perfect

The cost-effectiveness of using an indirect water heater is an important, but not its only advantage. The boiler has a number of other operational advantages:

• Sufficiently high performance. Its specific indicator depends on the cross section of the pipes installed in the unit, as well as on the power characteristics of the heating boiler itself.
• There is no load on the household electrical network (if a heating element is not additionally installed).
• The possibility of operating the equipment year-round (requires the installation of a heating element - a special heater) and the use of various sources of thermal energy. In some cases, this is of great importance.
• Absence of areas of contact between the coolant containing a considerable amount of harmful salts and heated water.

Now let's deal with the shortcomings of the considered water heaters and with possible ways to solve them. The main disadvantage of the boiler is the large size of the tank. The unit takes up a lot of space, which can cause difficulties when installing it in modest areas. The second drawback is that in a large container, the water heats up for a long time. Moreover, when the liquid in the tank is heated, there is a slight decrease in the intensity of heating of the dwelling.

Strapping installation

From the description of the principle of operation of an indirect water heater, it can be seen that without additional devices it can only be operated when the heating system is working. That is, the boiler is used exclusively in the cold season. And if we want to constantly get hot water, regardless of the temperature outside? It's quite real. You just need to equip the water heater with a heating element. It is built into the tank and connected to the mains. It is clear that you have to pay electricity bills. But then in your house there will always be hot water in the required quantity.

Homemade water heater - popular designs

Craftsmen use various methods of making devices of interest to us. It is really possible to build an indirect heating boiler without extra labor costs with your own hands according to one of the options proposed below:

1. 1. Pipes of a certain diameter are installed inside the tank. They can be placed in the central part of the storage tank or along its side surfaces. In the second case, the water heating rate will be slightly higher.
2. 2. Installation of the coil. The principle of operation of the device will remain the same. But the efficiency of the unit will increase. The coil is usually made from a pipe (metal, plastic). It just needs to be bent to get a spiral element.
3. 3. The use of two (different in geometrical parameters) containers. In this case, pipes are not needed. It is required to insert a smaller container into a tank with a large volume. The coolant in a similar design moves between the walls of the tanks used.

Homemade water heater

Indirect heating systems with a coil are recognized as the most effective in application. The bottom line is that the curved pipe is characterized by a large length. This makes it possible to use the potential of the coolant to the maximum. In addition, it is easiest to make a tank with a spiral element yourself. More on this later.

Container for the heater - what to make and how to prepare?

The water heater tank can be made from almost any material that has some resistance to corrosion. You can use enameled metal, glass ceramics, stainless steel, plastic. When choosing a material, the following should be taken into account: plastic, glass-ceramic and enameled containers do not differ in particular mechanical strength, in addition, enamel and ceramics are prone to corrosion. Because of this, after a couple of years of operation, it may be necessary to replace a tank made of these materials.

But stainless steel containers are many times more durable and reliable. The easiest way is to make an indirect water heater from a conventional gas cylinder. It is advisable to buy a new container. But it is also allowed to use with an old cylinder. It must be cut into two halves, the inner walls must be cleaned of dirt and treated with a primer (usually 2-3 layers are applied). Nuance. Soil is allowed and not used. But then in the first couple of weeks of operation of a homemade boiler, you will clearly smell the gas coming from hot water.

In the balloon prepared in the described way, we will make four holes. Through one, heated water will come out, the second is needed to supply cold liquid. Two more holes will allow you to connect the coolant and the coil. Then you should take care of high-quality thermal insulation of the tank. A homemade boiler must be insulated as carefully as possible. If this condition is not met, the efficiency of the device will be significantly reduced. Water in a warm state in it will not be maintained for very long.

Thermal protection of the container is recommended before assembly of the unit. It is more convenient, simpler and more reliable. The function of a heater can be performed by almost any heat insulator. Some craftsmen use glass wool. It is attached to the cylinder body with wire or adhesive. If desired, you can first glue the cotton wool, and then additionally fix it with a wire tie. It is even better to use polyurethane foam for insulation. Working with it requires minimal labor costs. And the result is excellent.

We make a coil and assemble the device - there will be no problems!

We make a spiral element for a boiler from a plastic or metal pipe. Its diameter should be small - in the range of 0.8–2 cm. We wind the pipe on a rounded log of a larger cross section, a metal tubular product, or on any other strong cylindrical mandrel. We make sure that the coils of the spiral do not touch each other. In this case, we will ensure maximum contact between the heated water and the heating surface.

The number of turns and the length of the coil are determined based on the capacity of the tank. For a boiler made from a 200-liter cylinder, the length of the spiral is about 15 m. The required number of turns is 12 (with a distance between them of about 7 cm). The coil should not be wound on the mandrel too tightly. Every year it will have to be dismantled and cleaned of accumulated deposits without fail. If the spiral is wound too tightly, it will be problematic to remove it.

Now we assemble our water heater:

1. 1. Install the coil along the walls or in the center of the tank.
2. 2. We solder the pipes to the outlet and inlet pipes.
3. 3. We weld ears to the body of the device - fasteners made of a metal corner when the boiler is planned to be hung on the wall. If the heater is installed vertically on the floor, legs must be welded to its bottom. They will ensure the stability of the unit.
4. 4. At the ends of the spiral element, we cut the thread, screw the locknut onto it. Then we bring the coil out of the tank, pull rubber gaskets on its ends, and threaded couplings on them. We connect the coil to the circuit of the heating system.
5. 5. We connect the device to the inlet and outlet pipe.

The final work is the arrangement of piping in different rooms (bathroom, kitchen). Advice. If wiring is not planned, install a valve on the hot water tap. We check all connections for leaks and start using a homemade water heater.