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How to install two boilers sequentially

DIY heating from a water heater. types of boilers and connection diagrams

The installation of a water heater will provide owners of country houses with hot water, increase the comfort of apartments from an old housing stock such as Khrushchevs and small.family hostels. The indefatigable unit will become hardworking and supplying water to the cranes so that the owners use the benefits of civilization. So it will be, if the water heater connection schemes to the water supply was complied with exactly, they agree? Full.fledged answers to a wide range of questions arising before the installation of water heaters and in the process of including them in a communication network, you will find on our website.

Reliable information will be useful to independent masters who want to carry out the installation with their own hands. It is necessary for customers of plumbers to check the quality of work execution.

The article describes in detail the types of water heaters, their design differences are indicated, the specifics of the connection are indicated. Valuable tips are given that guarantee the perfect operation of equipment after installing. The information content of the proposed material is perfectly supplemented by photo images and video recommendations.

Types of household water heaters

Features of connecting household heaters are directly related to the types of devices, their technical parameters, and overall dimensions.

Traditionally, two types of heaters are used in household practice:

Both types of boiler systems differ from one another heating technology.

Cold water is collected in the container with storage heaters, heats up and then removed to the water discharge.

Flowing units are heated directly during the cold water duct in contact with the heater, without the collection of fluid in the funded capacity.

Consumers of the household sphere mainly use accumulative boiler systems. A comparative review of both types of water heaters is given in this article.

The technical device of the boiler drive

The water.type water system, boilers, in a simplified circuit form, is a container equipped with electric heating elements or liquid heat exchangers. The accumulative vessel has tube lines for the supply of the CVS and the release of the hot water.

The designs of indirect heating boilers are equipped with an additional working area of ​​the coolant and the connection lines to heating.

Any modern system, regardless of design features, is equipped with automation, thanks to which the temperature of the water heating and the operation of the system as a whole are adjusted.

Structural execution of heating devices

There are designs of boilers-drivers designed for installation vertically (wall) and horizontally (floor). Of course, in each individual case of the use of certain boilers there are their own installation features.

So, if the wall.mounted installation of the water heating device is supposed, a preliminary calculation of the load and comparison of the results with the structural parameters of the wall of the room, which should be mounted on the device, is necessary.

Installation of equipment without loading calculations threatens to turn into an editing fat error when a filler boiler can simply collapse with a flimsy partition on which it was mounted.

According to the instructions for the equipment, the load is necessary to take into account the four.fold weight of the boiler system.

Therefore, if the structure of the supporting wall is frankly weak, the water heater scheme must be supplemented not only by the connection lines to the water supply and the coolant, but also with reinforced racks. through fasteners.

On the classic circuits for connecting the boilers of the wall.mounted installation of the pitch/output of the water, heating devices are marked with the corresponding color. blue/red.

How to install a water heater

In fact, there are not so many reasons to buy a water heater, but they are all good and directly affect the comfort of living. The annual “greetings” from communal workers in the form of two.week preventive work, or the absence of hot water supply in the country or in a country house will be made to make a strong.willed decision and equip the house with a boiler.

How a boiler, fan coil unit, air handling unit and pump work together HVAC. Heating System ������

The new trend of recent years, actively gaining popularity on the network and fixing in the minds of people. the movement of DIY (do it Yourself), which literally means “do yourself”. “Consumption Society” gradually becomes obsolete, which pushes people to perform work unusual for them before. And, paradoxically, many of them successfully achieve the goal. After all, the motto of the real master says: “Do you want to do something well-do it yourself!””

The installation of a water heater does not imply any insoluble difficulties, so all the work can be done independently. Why not prove to yourself and your environment that you can work not only with your head, but also with your hands? Let’s start, as usual, with the theory, but the reader will have to do the practical part independently. in accordance with our instructions.

The task of the boiler is the heating of the water. By design, they can be divided into:

Instructions for installing a full.sized electric water heater

The installation of an electric boiler can conditionally be divided into three stages:

Before starting work, we determine the location of the water heater. It should be located in the immediate vicinity of the points of water. This approach will help reduce heat loss during transportation of heated water from the tank to the mixer.

At the stage of installation of the water heater on the wall, instructions will provide invaluable assistance (it is given the dimensions for installing fasteners) and a physically strong assistant, capable of standing in an uncomfortable pose, for some time to keep the design by weight.

You can cope alone alone, but it should be borne in mind that the weight of an empty water heater with a volume of 100 liters is about 30 kg.

From the tools you will need: pencil or marker, roulette, peorator, bubble level, pliers or divorce key.

After a careful study of the instructions or the measurement of the water heater mounts, marking the future holes for fasteners is applied to the wall, after which they are drilled with a peorator.

When applying marking, it is important to control the distance from the upper point of the device to the ceiling. It should be at least 5-7 cm. The gap is necessary for hanging the water heater to hooks or mounting bar. Rule “measure seven times, cut once (t. e. drilled) “here it is appropriate for the way.

It is important to understand that the filled tank has a solid weight, so the attachment to the wall should be reliable! As a rule, the manufacturer indicates in the instructions the necessary parameters of fasteners. Basically, for the installation of 100-150 l of the cumulative tank, MA-shaped hooks with a diameter of 12-14 mm or bolts of the same diameter are used.

Due to the large weight, water heaters with a volume of 80 liters are installed exclusively on the load-bearing walls. Smaller devices allowed to be mounted on partitions.

After twisting the fasteners or installing the mounting bar, it will be useful to check the “horizon” with a bubble level.

A flat installation of a storage tank is important for aesthetic perception of work and will become a plus to the karma of the master.

After installing the boiler, it’s time to do water to the device. At this stage, the following tool will be needed: a divorce key, a device for welding plastic pipes (if you are supplied using a PVC pipe) and scissors for plastic pipes. With consumables (fittings, valves, tees, winding, etc. D.) will have to decide on your own based on the specific conditions of installation. The same applies to the materials necessary for the organization of the water line. A simpler option is to use hoses of the desired length. Installation and soldering of plastic pipes more time.consuming and take more time, but such a solution is more reliable, practical and aesthetically pleasing.

The water heater connection scheme to the water supply system is as follows:

When connecting to the water heater in the system, there must be a safety valve that protects the accumulative boiler from excessive internal pressure during the heating of the water, as well as the cutting valves necessary to stop the water supply during the heater maintenance.

There should not be any locking reinforcement between the input fitting of the water supply and the protective valve! Only in this case, the valve will drop excess pressure and protect the tank from damage in an emergency.

Between the input fitting of cold water and the safety valve, it is extremely desirable to set the tee creating a branch to drain the water from the tank for its maintenance or repair.

If you additionally install the same branch at the outlet of hot water, it will be even easier to drain the water. Open valve will provide a good flow of air inside, which will facilitate the task.

In houses with centralized hot water supply before using the heater, it is important to make sure that the duration of hot water supply to the apartment is blocked. Otherwise, the neighbors (the riser is general) will be able to use water heated with water, and the owner of the water heater will have to pay for this “holiday of hot water and unheard of generosity”.

After completing the water supply, you need to open the locking valves of the water heater, the hot water tap for the mixer and fill the water heater with water. After the air comes out and water will go from the mixer under the usual pressure, the water heater is ready to use.

In the process of filling the tank with water, you need to carefully check all the connections for leaks. In case of leaks detect, the filling process must be interrupted and eliminated.

There are several options for connecting to an electric network. The water heater can be connected directly to the circuit breaker (for a 2 kW.cancer tank there will be enough machine for 10 A), or directly to the outlet connected to a separate line and protected by an individual circuit breaker.

Installation of an electric water heater in a small volume

Small storage boilers are designed to solve the local problem of hot water supply. As a rule, their location is a kitchen or a bathroom.

The plan for installing a small heater remains unchanged and largely repeats the steps described for their full.size brothers. However, there are nuances that should be taken into account:

Installation of a flowing electric water heater

Running water heaters prepare hot water as necessary. These are light and compact models, they are not limited by the volume of the tank, so they can warm water in the quantities needed by the user. After the tap is open, the water of the desired temperature flows after about half a minute.

Installation does not cause much difficulty. In many ways, the sequence of actions is similar to the installation of a storage boiler with the only exception that the supply and removal of water is carried out without a safety valve and taps for draining water. Installation of locking reinforcement at the entrance and exit from the tank is necessary. This will easily dismantle the heater for maintenance or repair.

Do not forget about the need to block the input from the common riser of hot water supply!

How is a double.circuit water heater?

Water heating the owners of double.circuit models is cheaper than when using single.circuit variations. over, the design of the units under consideration have few differences: there are fittings that provide hot drainage and supply of cold water, explosive valve, storage container, heater, temperature sensor.

In the photo, the device and the principle of operation of the cumulative boiler

In addition to the traditional set of parts and nodes in a dual.circuit boiler, there is a special component in the form of a copper coil. this is a spiral heat exchanger, its discharge comes from the case of the device. The coolant from the heating system is driven along the coil, during which this copper circuit heats up.

As a result, conditions are formed under which water in the boiler is prepared not only through the use of the heater, but also due to the presence of a spiral heat exchanger. The water heater performs the functions of the heat accumulator, it is often included in the heating system as a strapping for a solid fuel boiler.

The equipment usually has a large operating volume, the design is calculated in such a way as to supply the required amount of water in the conditions of peak loads, in particular, when the corresponding taps are opened in the house at the same time. Thoughtful thermal insulation helps to maintain the temperature of the carrier for a long time. In the summer months, when heating is turned off, the water in the boiler is heated autonomously.

Installation schemes and solutions

The heating device can be connected to a centralized supply in one of two ways: through the security group or directly.

The security group consists of a set of the following elements:

The presence of a security group is traditionally used on indirect heating boiler rooms, as well as when the pressure of the centralized system is higher than the boundary parameter of the working pressure of the boiler.

Connection is usually applicable to the equipment of a small capacity, with a flow principle of action. Direct connection is also allowed in conditions of smaller and stable pressures of a centralized water supply. The installation circuit in any case involves the installation of shut.off cranes.

Installation schemes and solutions

The heating device can be connected to a centralized supply in one of two ways: through the security group or directly.

The security group consists of a set of the following elements:

The presence of a security group is traditionally used on indirect heating boiler rooms, as well as when the pressure of the centralized system is higher than the boundary parameter of the working pressure of the boiler.

Connection is usually applicable to the equipment of a small capacity, with a flow principle of action. Direct connection is also allowed in conditions of smaller and stable pressures of a centralized water supply. The installation circuit in any case involves the installation of shut.off cranes.

Principle of operation

Floor boilers, wall.mounted, as well as combined with a heat exchanger and built.in thermal heating element. Unlike the heating water heaters, where direct contact with the heater occurs, the coil in the form of stainless steel pipe is most often built in in indirect heating boilers. The principle of operation lies in the delivery of heat from the coolant moving along the coil water, which is filled with the tank.

Due to such a scheme of work, water heating is much faster than with a conventional heater, the formation of scale is minimized and the tank will be much less likely to need to maintain.

In this article, we consider the circuit for connecting an indirect heating boiler:

Connection of two boilers in one circuit

But there is no possibility to put a plate plate? I just came across a similar system of BVUC boilers, as a result they put a plate and forgotten

There are many places, but I did not encounter plate. Tell me what it should be (name) and how much kilowatts. What pressure should be?

It is calculated individually by consumption, we need the supply of the coolant from the Central Committee. If then there is only only the drive. In St. Petersburg there are cantors for sale, the same Dunfos (expensive), is cheaper, now I don’t remember

set in series. enter exit. But I doubt that enough

Boilers are placed sequentially in water, t.e. The exit of hot from one boiler is supplied instead of cold at the second. The number of consumers is not as important as their intensity. A 200-liter boiler is completely heated in about 4 hours.

Parallel, one crack.,Another will work.Although also a collective farm.

Washing is about 5 liters of hot water, for a shower of about 30-50 liters. This is taking into account approximately equal mixing it with cold when using.

Kasimov wrote: parallel, one crack.,Another will work.

current productivity is much lower. Here the second water should be less warm

Kasimov wrote: parallel, one crack.,Another will work.

And how will you regulate the pressure and uniformity between them?

Pardus wrote: According to the customer, the problem was in time for heating boilers

Well, the volume was not enough for the campaign. quickly spent water had to wait for heating.

Andrey wrote: how will you regulate the pressure and uniformity of the flow between them?

And what is it a problem. The entrance is the total pair of balancer cranes at the entrances and the mustache.and if the same type of consumption will differ minimally

Vitaon wrote: well, the volume was not enough for the campaign. quickly spent water had to wait for heating.

Maybe. But the instant heating of the plate is better and faster even in such a baby: “

Pardus wrote: but there is no possibility to put a plate plate?

Well, yes, I wrote, if possible, the coolant from the side. Give out if what is wrong

Andrey wrote: never put a few paints in parallel

If you make a fishing line for a trimmer of recirculation for all parallel boilers, again with parallel inclusion, then the difference in the performance of the boilers will be leveled.

The fitting wrote: Do you need to put expansion tanks.

It depends on the design of boilers. Simple electric boilers are arranged in such a way that there is always air under the cylinder dome, acting as an expansion tank. Therefore, it is necessary to clarify the question of the need to use an expansion tank in each specific boiler.

Cineman wrote: If you make a fishing line for a trimmer of recirculation for all parallel boilers

This is needed by special. Boilers. If you do this with the usual (biceps), then everything is mixed in them (there will be no division into upper hot, already heated, and lower cold, heated, layers) and during periods of intense water clearance (all washed in the morning, for example) the temperature of the water will not be constant to which she was heated at night and decline monotonously; This is very inconvenient and capable of leading to the underpare use of the accumulating (accumulative) ability of boilers, t.e. With morning washing hot water, it will be about 20% less about 20%.

Vitaon wrote: how can a stream be uneven. Two identical vessels. Two identical branches of the same length on both sides. and out of. The XV presses the same way, the hydraulic power is equally, how can there be a different duct

Criteria for unmistakable equipment installation

Among the main points of installation, on which you should focus on, so as not to make errors. this is the correspondence of pipeline diameters with respect to the input fittings, as well as the cross.section of the cable that feeds the boiler electric heater.

The diameter of the supply pipes should provide a free water duct along the entrance/output lines. Therefore, the larger diameter of the sleeves with the transition to the size of the fittings is still permissible, but the cross section of the pipelines is less than the introductory nozzles of the boiler, it is already seen a rough mistake.

The section of the power cable picture is similar. It is not forbidden to use a larger cable, and a lesser cable is strictly forbidden to use.

True, the cable enlarged against the rate of section creates difficulties when laying in the channels, occupies more free space. The exact selection of the cross.section of the wire is logical here, depending on the load current.

Some features of water supply scheme

Connecting a storage boiler. Cold water supply to the boiler system is performed through a trimber for a trimmer, which is connected directly to the centralized supply riser.

At the same time, a number of components necessary for the normal functioning of the equipment are mounted on the cold water line:

The indicated elements of the circuit are installed on the site between the cold water supply pipe and the boiler in the marked sequence.

The fishing line for a trimmer for the release of a heated fluid by default is also equipped with a locking crane. However, this requirement is not mandatory and if the crane does not put on the output of the hot water, a serious error is not seen in this.

Connection of a running water heater. Compared to the boiler-drive, work is performed according to a simplified scheme. It is enough to install only one shut.off crane in front of the input fitting of cold water.

But the installation of a shut.off valve at the output of the DOS of the flow heater is regarded by many manufacturers of a rough error of installation.

It should also be taken into account: if the source of cold water supply is a well, a well, a water tower, etc.P., It is recommended sequentially with a tap (after a tap) to turn on a coarse cleaning filter.

Combi Boiler with Two Heating Zones, 230V Switching

Often, a mounting error with connecting the filter or refusing to install it leads to a loss of the manufacturer’s warranty.

Connection schemes

Connection to a wall.mounted single.circuit boiler

Typically, wall gas boilers are equipped with a built.in circulation pump and a valve responsible for switching between heating and the heating contour of the boiler. In this case, there is no need for additional installation of the circulation pump or three.way valve. It is enough to connect 2 pipes. feed and return, buy a temperature sensor for a boiler and use a full.fledged system.

An example of connecting an indirect heating boiler to the Buderus Logamax U072 boiler. The entire connection is closer to the wall behind the boiler.

A coolant is supplied to the top of the heat exchanger from the boiler, passing through the coil and returning through the pipe to the boiler. This principle of connecting the boiler to an indirect heating boiler is used to ensure that when water is admitted to the tank. At first, she began to warm up with a relatively cold section of the heat exchanger, and then more hot.

The binding diagram of an indirect heating boiler with a wall.mounted boiler

Between the two systems on filing and on the return, there should be shut.off valves. Ball valves are installed near the boiler or at the entrance and output, directly to the water heater. The boiler is connected through a rapidly detachable connection. This connection is provided for easy maintenance or replacement of the boiler if necessary.

If the ball crane is mounted near the boiler at the feed and return, then the detachable joints are installed between the tap and the water heater. Wall single.circuit boilers are connected to an indirect heating boiler according to different schemes. if there is only one way out, let’s say the feed, then the return can be common with the heating system. There are 2 exits, both for the feed and the return. Some electric polls and gas boilers do not have a way out for strapping an indirect heating boiler. In this case, you need to purchase a kit for connecting a boiler. But, the valve and servomotor should be included in the kit, which should be used to connect to the boiler automation.

This looks like an example of a gas boiler Baxi Ecofour:

And the set of the Baxi Luna 3 boiler will already be like this (there the three.way valve is already built into the boiler itself):

Connection to a floor single.circuit boiler

Connecting to a single.circuit boiler of the first type, in principle, is no different from the second. They also have a feed and return. the feed is fed from above, and the return is returned from below. The only nuance is that an air cork may form in the upper part. To prevent this, it is necessary to install an automatic air vent.

How to connect an indirect heating boiler to a floor boiler? Floor boilers do not have a built-in pump and a 3-logo valve, so it will be necessary to install either a 3-way valve or a circulation pump. Let’s take a closer look on the diagram of how to tie a boiler to a floor boiler with a circulation pump.

We connect the return from the boiler directly to the floor gas boiler using tees. Install the circulation pump for the return or for feed. Do not forget about shut.off valves. we mount the ball valve to the pump and after the pump, as well as the filter and the check valve. When connecting the boiler, we install the detachable connections: we install the ball valve only on the return, because at the supply of the ball valve we have already been installed near the pump. With this connection diagram, the pump is controlled by the automation of the boiler. it turns on and turns off depending on when you need to warm up the boiler.

Connection via a collector or hydraulic shot

In the second connection option, the supply and return from the boiler with its separate pump is connected after the hydraulic shotus. After the hydraulic shotus, collector wiring with its individual pumps is usually installed, let’s say on the circuit of the warm floors, the radiator contour and the boiler heating circuit is connected there, with its separate pump. In this case, you will need additional automation, which will control the boiler and all the pumps that are present in this scheme. This connection scheme is well applicable for large houses in two or three levels. From the boiler the feed goes to the collector, and there it is already distributed to heating each floor and to an indirect heating boiler.

Some features of water supply scheme

Connecting a storage boiler. Cold water supply to the boiler system is performed through a trimber for a trimmer, which is connected directly to the centralized supply riser.

At the same time, a number of components necessary for the normal functioning of the equipment are mounted on the cold water line:

The indicated elements of the circuit are installed on the site between the cold water supply pipe and the boiler in the marked sequence.

The fishing line for a trimmer for the release of a heated fluid by default is also equipped with a locking crane. However, this requirement is not mandatory and if the crane does not put on the output of the hot water, a serious error is not seen in this.

Connection of a running water heater. Compared to the boiler-drive, work is performed according to a simplified scheme. It is enough to install only one shut.off crane in front of the input fitting of cold water.

But the installation of a shut.off valve at the output of the DOS of the flow heater is regarded by many manufacturers of a rough error of installation.

It should also be taken into account: if the source of cold water supply is a well, a well, a water tower, etc.P., It is recommended sequentially with a tap (after a tap) to turn on a coarse cleaning filter.

Often, a mounting error with connecting the filter or refusing to install it leads to a loss of the manufacturer’s warranty.

Install a flowing water heater (indirect heating boiler).

Installation of a flow or horizontal boiler will not take much time. Such boilers often have power more than 50 kW, and they weigh quite a few, so it is difficult to transport them or just move on their own. The system is connected to hot and cold water in the same way as the vertical water heater only with the difference that the drain hole is on top.

The grounding system is also more serious, for powerful boilers, a separate conclusion is provided. It can easily be done with your own hands, just branch the wire from the iron part of the device and connect.

This device is mainly used in production, t.to. It has a large enough volume, and the price is high.

General installation tips.

As you can see, the connection of a flow water heater is a simple task that requires maximum concentration of attention. If you incorrectly attach the coupling or slightly tighten it, then the breakdown is inevitable, because of this, the service life can also significantly decrease.

No special documents are needed if you buy a water heater, not a gas column.

Author

Goltilar

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