The size of the air conditioner is the indoor unit of a wall-mounted split system. Features of indoor units of split systems, their dimensions and fastenings Technical characteristics of the air conditioner

The introduction of new technological solutions in household equipment often runs counter to practical expediency. The example of climate technology is the most indicative in this sense. Yes, in recent times the market is actively filled with which are intended for indoor use. The features of such systems include the complete exclusion of dirty installation operations, which attracts a considerable audience of consumers. But with all the convenience of installation and further maintenance, such models are not able to approach the performance characteristics provided by the external air conditioner unit as part of a split system. Another thing is that the owners of outdoor installations have to deal with troublesome tasks, but of a different kind.

What is an outdoor unit?

The composition of the outdoor segment, which is part of the split system complex, includes a condenser, valve decoupling, pipes, filter driers and a fan. Depending on the modification and design, the internal "stuffing" may vary, but the traditional air conditioner kit with a remote unit has just such a set of elements. By the way, the most noticeable differences are observed in the so-called winter systems, which provide for the presence of special controllers for controlling the fan. Modern air conditioners also use multifunctional power switching relays. Such devices are designed for non-standard operation of the compressor in conditions of high or low temperatures. Unlike the internal segment, outdoor unit does not have electronic modules- his work is completely subordinated to the mechanical function.

Block dimensions

The outdoor unit is available on the market in various configurations and shapes. And although manufacturers, in order to simplify the segmentation, tend to unify the model lines, the choice of sizes is still quite wide. If we talk about average parameters, then it has a width of 770 mm, a height of 450 mm and a thickness of 245 mm. At the same time, the radius of the fan varies on average from 200 to 250 mm. Of course, there are also aggregates, the sizes of which deviate from these indicators. So, in the Mitsubishi lineup, an external air conditioning unit is almost square shape, which is 880 mm wide and 840 mm high. As for the parameters of the internal segment, they are not so impressive. Usually these are long narrow modules of medium size - 700 x 200 x 200 mm.

Choosing a place to install the unit

Usually, when choosing the optimal point for installing air conditioners outside, users are faced with the problems of combining ease of use and protection of the module. For example, the location of the block at height is the best option from the point of view of its safety, but in this case, access to the air conditioner for the purpose of maintenance becomes more difficult. A good solution would be to place the module on the wall near the window opening or loggia. At the same time, other nuances must be taken into account, including the absence of direct sunlight and permission for installation from neighbors, since a noisy unit can cause inconvenience to people living on the same level of the building.

In addition, it produces condensate, which will drip down in drops. Accordingly, you will have to negotiate with neighbors on the lower floors. In case of successful coordination of the installation site of the unit with other residents, you can proceed to direct installation operations. By the way, another condition for installing an outdoor unit is the possibility of laying communications in the wall.

Installation of the external unit of the air conditioner

When installing air conditioners, special mounting kits are used, which include pipes with flex, brackets with sets of fixing hardware, drainage communications, etc. The physical installation of the segment is carried out using load-bearing components that are embedded in the walls using anchor elements. At the same stage, brackets are used, the power potential of which is oriented to the mass of a particular module. Also, the installation of the external unit of the air conditioner provides for its communication connection with the internal segment. To do this, a hole of the required diameter is made in the wall, which will allow organizing, in addition to the main wiring, also the laying of a vacuum pump and a gauge manifold. At the final stage, a direct connection of communications between the two blocks is made.

Features of installing the indoor unit

When installing the evaporative, that is, the internal module of the air conditioning system, it is especially important to observe the correct position of the unit. This unit is usually mounted directly below ceiling surface with a slight indent. Mechanical fixation is also carried out using suitable brackets. True, in this case, the mass of equipment is not so large, which simplifies the workflow. After marking, the master installs the anchor elements and, if necessary, fastens the supporting profiles. Further installed indoor unit air conditioner with strict observance of the horizontal position. Also, some models of such segments, according to the instructions, should have a slight slope towards the passage of drainage.

Maintenance and care

In normal operation, every six months, the air conditioner should be subjected to after-sales service. Most of the work is carried out with the external unit, which is most prone to contamination. Specialists usually check the condition of the filters, the refrigerant level, operating pressure module traces, etc. The most difficult operation is the replacement of the working fluid. The refrigerant is a chemically unsafe substance, so it is better to trust its refueling experienced craftsmen. But the care of the rest of the components is quite accessible to ordinary users. For example, the answer to the question of how to clean the external unit of an air conditioner is quite simple. First of all, it should be disassembled, after which, using a rag or a vacuum cleaner, rid the internal surfaces of the module of dust and dirt deposits. In the process of such care, external filters and heat exchangers are cleaned, which prolongs the life of the air conditioner.

Outdoor unit in multi-systems

The concept of technical implementation of a split system provides for the possibility of using several indoor modules in one complex, which are serviced by one outdoor unit. Unlike standard configurations, the external module of such a system has engineering differences. For integration into a multi-system, it is equipped with an additional thermostat, which allows you to more effectively control the settings of the fan and compressor. In turn, the indoor unit of the air conditioner acts as a source of information signals that determine the control of the outdoor module. That is, the user, using the remote control, accesses the panel of the indoor unit, and the latter, in turn, regulates the system of bypass communications on the freon line via a digital channel.

A question of price

In modern modifications, split-system air conditioners are not cheap, which is largely due to the complexity of the design. Even in the initial segment, the cost of an air conditioner with a remote unit is rarely less than 20 thousand rubles. Of course, you can find options for 15 thousand rubles. from little-known brands, but their quality is questionable by both specialists and users themselves, who often complain about problems.

Decent quality models are offered by Fujitsu, Daikin, Mitsubishi, etc. The average cost of an air conditioner from the range of these companies varies in the range of 30-40 thousand rubles. At the same time, the most technologically advanced and productive kits can be estimated at 70-80 thousand rubles.

Conclusion

The use of air conditioners with a design that involves the installation of a remote unit causes many problems during installation and further maintenance. And this is without taking into account the difficulties in transporting equipment. These factors allow us to speak of such units as obsolete. Especially against the backdrop of the spread of mobile devices with a modest size. Nevertheless, the external unit of the air conditioner remains relevant in the market. This is explained by its high performance, functionality and safety during operation, since the main work units are located outside the living quarters. And if for domestic use you can find a low-power replacement for a split system in the form of a monoblock, then in the context of maintenance office space, public buildings and institutions multifunctional complexes still have no equal.

Often, during repairs, many people think about installing a split system and plan the design of rooms to fit the size of the air conditioner. indoor unit this device it is necessary to place it in such a way that it is not only correctly located, but also looks most harmoniously in the intended interior.

The purchase and choice of the air conditioner itself is often planned closer to the end of the repair, and you need to supply the “power” now. So this article is written for such cases. In it, we will consider in detail what distances must be taken into account for subsequent installation, and we will identify the most universal sizes of indoor units (wall-mounted household appliances).

First, we want to warn you right away that there are “non-standard” models of air conditioners that can have unique dimensions and characteristics. And therefore this article should not be taken as 100% universal.

Air conditioner size. Split indoor unit

Most often, living rooms have a small area (up to 25 sq.m.). Air conditioners up to 2.7 kW are suitable for such premises (do not confuse with power consumption) - they are usually called "sevens" or "nines". As a rule, "sevens" and "nines" (of the same model) have the same dimensions, as well as the same diameter of the tubes. Therefore, further we will take into account the same dimensions and characteristics of the considered standard sizes.

Overall dimensions of the indoor unit, which we are primarily interested in

• block length. The most standard length of indoor units is 700-800 mm. Slightly less common up to 900 mm. By personal experience it is best to take into account average length 770 mm.
• block height. Most often, these dimensions lie in the range of 250-290 mm. For planning, we will take into account 270 mm.

We are not very interested in depth (170-240 mm). Thus, we have identified the average size of the internal block 770 x 270 mm.

Distances from walls and ceiling

1. Air conditioners "on / off". The cable is brought out in such a way that it is subsequently located under the indoor unit ( to the left by 300 mm. and lower by 100 mm. from the center of the block).
2. Most

Today, to maintain a favorable microclimate in the premises, split systems are popular. They consist of two parts: external and internal block. The outdoor unit of the air conditioner is of key importance for the quality operation of the equipment. We will understand its device, principles of operation and features of installation and maintenance.

Equipment device

The external unit of the split system is called the compressor and condenser unit (KKB). This is a key element of climate equipment that provides cooling or heating by changing the state of the refrigerant (working substance). KKB is a building that houses:

• compressor;
• condenser (heat exchanger);
• expansion coils;
• capillary tubes;
• 4 way valve;
• filter dryer (receiver);
• fan.

The outdoor unit of the air conditioner is connected to the equipment in the room through a system of freon (heat-insulating copper) lines. A drainage line runs from the indoor unit to the outdoor unit.

The KKB case is made of galvanized steel.

Equipment features

A number of KKB models are equipped with a special "winter kit". It is designed to keep the instrument in good working order. winter time years at low temperatures. The winter kit works only for cooling, so it is best suited for installation in server rooms and other rooms with high level heat dissipation.

It includes the following elements:

• The fan control controller turns off the ventilation and turns it on when the condenser heats up.
• Heated drain pipe.
• Compressor crankcase heating before start.

The general principle of operation of a split system can be described as follows: warm air, cooled air is supplied in the opposite direction, which loses temperature, passing through the air conditioner and in contact with the refrigerant.

When switching the split system mode to heating, the reverse process occurs. The outdoor unit takes in cold air from outside and raises the temperature to the desired level. The indoor unit delivers heated air into the room.

KKB works at the expense of physical properties refrigerant that transfers energy when the state of aggregation changes.

The outdoor unit of the air conditioner works as follows:

1. From the container, the compressor is supplied with a working substance in a gaseous state.
2. From the compressor high pressure The refrigerant enters the condenser, where it turns into a liquid, giving off heat.
3. Having lost some of the energy, freon enters the highway.
4. From the line, the working substance passes into the throttling device, where it loses pressure and cools.
5. Cold liquid is transferred to the evaporator, where it actively circulates through the tubes.
6. The evaporator is blown with warm supply air by means of a fan.
7. Cold air is supplied to the room.
8. The warm supply air heats the heat exchanger as it passes through it before it enters the room.
9. From the heat exchanger, the refrigerant is heated, which turns into a gas.
10. Freon, passing into a gaseous state, gives the air cold. From the heat exchanger, the gaseous refrigerant enters the compressor again, where the process is repeated.
11. A closed cycle of work is created.

main parameters

When choosing and buying an external unit of a split system, you need to pay attention to four main characteristics:

• Size, height, width, length.
• Power.
• Line length.

Dimensional dimensions of external units depend on the power and functionality of the equipment.

Average dimensional characteristics of the outdoor unit of the split system:

• width 80 cm;
• height 50 cm;
• thickness 30 cm.

Models that are offered on the market may have different capacities. It all depends on the purpose of the equipment. A standard household split system has a capacity that allows you to cover a space of up to 100 square meters. m.

An important characteristic of the outdoor unit is noise. If the air conditioner in the room works without noise, then the external unit can cause significant inconvenience to the neighbors. When choosing a model, it is better to clarify the indicator of the noise produced during the operation of the external unit. Permissible indicator 32 dB.

It is necessary to pay attention to the permissible length of the connecting lines between the blocks.

Do not exceed the distance that is stated in the technical data sheet of the model, as this can lead to a serious decrease in the efficiency of the equipment.

Installing an outdoor unit involves several steps. At the first stage, the installation site is determined, equipment and tools are prepared. At the second stage, the marking and direct fixation of the equipment is performed. At the third stage, performance verification and testing activities are carried out.

Location selection

Constructions modern buildings (apartment buildings, shopping and office centers) provide for the installation of air conditioners and split systems. This moment is laid down during the design. Special boxes are mounted on the facades of buildings. They decide two key tasks. First, it minimizes the likelihood that fasteners will be poorly made. Secondly, the boxes are harmoniously built into the design of the building and do not spoil its appearance.

If there are no boxes in the building, then the choice of location must be made taking into account the following factors.

General rules for choosing a place for an air conditioner:

1. The block is mounted on the wall adjacent to the apartment. You can not fix the device on the "territory of neighbors". Before starting work, it is necessary to clarify the possibility of installing air conditioners on the facade of the building. The city authorities may issue a decree according to which such work is prohibited, because it spoils the historical or cultural appearance of the building. There may be other reasons for the ban.
2. The optimal mounting locations are the space under the window, slightly below the window sill, and the place to the side of the window. This position will make it easier installation work and allow for easy maintenance.
3. If it is impossible to mount the unit on the facade, you can install it inside open balcony or loggia.

Mounting tool

Before starting work, be sure to prepare a set of tools. To install an outdoor unit, you will need:

• perforator;
• a drill for drilling a hole in the wall through which the highway will be laid;
• drills for making holes for fixing brackets;
• Vacuum pump, with which moisture and air are removed from the freon circuit;
• gauge manifold for connecting the refrigerant cylinder to the container in the unit;
• a set of rolls that are needed for rolling copper tubes when connected to air conditioner valves;
• pipe cutter for cutting copper pipes;
• pipe bender for forming bends on tubes;
• standard set wrenches, hexagons, screwdrivers, wire cutters, level gauge.

When installing, be sure to consider the following rules:

• Availability of income fresh air. It is impossible to mount the outdoor unit in a closed space without air access and or with its limited supply (glazed loggia). Such an error will lead to overheating and breakdown of the KKB.
• During operation, you will periodically have to change the refrigerant. To do this, the valves must be located so that the master can freely and without risk replace them. For most models, the valve is located on the left side.
• It is necessary to provide for competent drainage of condensate so that it does not fall on the walls, visor or sidewalk.
• Fasteners must be mounted on bearing structures, which should be designed for a load of several tens of kilograms. You can not fix the brackets on the walls of aerated concrete, on the external decorative facing layer or on the insulation layer.
• The distance from the wall to the unit should be at least 10 cm. This distance will allow ventilation and reduce the risk of overheating of the device. The distance from the wall to the inner wall of the unit must not be too large. It is impossible for direct sunlight to fall on the hidden wall of the block.
• When laying connecting lines, avoid a large number bends, because they will lead to a decrease in the required refrigerant flow, this will reduce the efficiency of the air conditioner.
• It is recommended to equip a cornice that will protect the outdoor unit of the air conditioner from direct moisture.

Mounting to the wall is carried out using special brackets, which are usually included in the package. It has the form of a profile of various sections, bent at an angle of 90 degrees. It has several holes: one for fixing to the wall, the other for mounting the unit. Load bearing capacity brackets exceeds the weight of the air conditioner several times, so their use will ensure safety and reliability.

Installation process

Step-by-step instructions for installing an external air conditioner unit:

1. The location of the block on the wall, holes and channels for trunk lines are marked. The key parameters mentioned above are taken into account.
2. Holes are made in the wall for brackets.
3. A hole is made in the wall for communications. A box is laid in the hole, in which a freon and drainage line, electrical wiring are laid.
4. Brackets are attached. For their fixation, anchor bolts or dowels with "capercaillie" are used. The block is mounted on the brackets. It is fixed with bolts.
5. Strength, reliability and stability are tested.
6. Freon tubes are chamfered and flared. Tubes are connected to the block.
7. There are wires in the KKB. Their optimal length is measured, they are stripped and connected to the terminal block. The connection of each wire is made in accordance with electric circuit, which must be attached to the technical data sheet of the device.
8. After installing the indoor unit, a vacuum pump is connected to the KKB, with the help of which air is dried and evacuated from the lines and internal elements of the unit.
9. A protective box is put on.
10. The refrigerant tank is filled with freon. A test launch of the equipment is carried out, the modes and correct operation are checked.

Breakdowns and malfunctions

Like any other appliance, the outdoor unit of the air conditioner can break down. At low temperatures in winter, the use of an air conditioner without a winter kit can lead to compressor failure. The external block under the influence of external natural factors is strongly cooled and freezes over. Under such conditions, freon cannot boil in the outdoor unit. Liquid refrigerant enters the compressor, which leads to its breakdown.

To avoid damage to the compressor from freezing of the outdoor unit, you should install a winter kit or use the device in accordance with the technical instructions: heat the room only in autumn and spring at positive outside temperatures.

Another possible type of mechanical failure is the failure of the fan, which pumps air into the unit. The cause of premature wear of the fan may be the ingress of dirt and dust into the unit.

Malfunctions in the electronics are associated with the failure of the control and regulation boards. There may be problems with the integrity of electrical networks.

Maintenance and care

In normal operation, the outdoor unit requires a preventive maintenance inspection once every 6 months. The master inspects the fixtures, checks the integrity and level of contamination of the filters, specifies the amount of refrigerant and measures the operating pressure of the networks.

The greatest difficulty in maintenance is the replacement of the working fluid.

The refrigerant is chemical, which poses a health hazard, so it is worth trusting a professional master to work with it. You can check the condition of the filters, remove dust and dirt yourself.

Technical consultants of the Thermomir company will tell you the dimensions of the indoor unit of the air conditioner and help you choose the right model.

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During operation domestic split systems you can feel bad smell rot along with air currents from the device. It indicates the need for preventive cleaning of the unit. In addition to repulsive amber, clogging of nodes can cause rapid wear of the power unit, increased power consumption and the occurrence of allergic reactions in humans.

This procedure can be entrusted to an employee service center. But if you have been using a split system for a long time, you can handle the work yourself, saving money. It is only necessary to familiarize yourself with the procedure for disassembly and preventive cleaning.

Indoor unit dimensions

Before installing the indoor unit of the air conditioner, you should take an interest in its dimensions. This is especially important when renovating modern technologies quite often provide for the installation of suspended ceiling systems, which can affect the height of the ceiling, as well as the parameters of the described device.

On sale you can find non-standard models that have unique sizes. The length of the block usually varies from 700 to 800 mm. Products up to 900 mm are somewhat less common. Experts recommend taking into account an average length of 770 mm.

As for the height, it is usually equal to 250-290 mm. The average value is 270 mm. Depth is not of great interest to consumers, but it reaches 240 mm. The minimum value is equivalent to 170 mm. From this we can conclude that the average dimensions of the indoor unit of the air conditioner are 770 x 270 mm.

Knowing these parameters allows you to determine at what distance from the ceiling and walls to hang equipment. There are a lot of controversies on this issue. In some instructions, the minimum distance is 50 mm, while in others it goes up to 300 mm. Optimal value equal to a figure from 60 to 150 mm.

Specialists usually install air conditioning with a distance of 100 mm. Before installing the indoor unit of the air conditioner, it is important to consider whether there will be curtains in the room. The step between them and the split system is usually 150 mm. You can increase this value up to 250 mm. The average distance from the block to the wall is 400 mm.

Classification of indoor units

In order to carry out disassembly, it is necessary to determine the type of the indoor unit of the air conditioner, which can be represented:

• wall split system;
• channel air conditioner;
• cassette device.

The most common are wall models, which are more affordable and are sometimes also called household. Their installation can be carried out in a room for any purpose, and the power within 7 kW allows you to cool up to 70 m2 of area. Such blocks are usually installed in the upper part of the wall, not far from the window, since the design provides for the presence of an outdoor unit, and the nodes must be interconnected.

Wall-mounted air conditioners are not able to supply fresh air to the premises, as this requires a separate ventilation system. If you wondered how to disassemble the indoor unit of the air conditioner, you can read this information below. It is for such a device that the recommendations in the article are given.

In addition to household air conditioners, some manufacturers supply semi-industrial devices to the market, the power of which reaches 10 kW. Outwardly, they look like traditional split systems, but in terms of parameters they are semi-industrial equipment.

Ducted air conditioners are installed with suspended ceilings that hide them completely. The distribution of cooled air is provided by heat-insulated air ducts, which are located in the interceiling space. Such structures can cool several rooms at once. The power of the equipment reaches 25 kW, which makes it possible to provide cooling for a cottage or several rooms of an apartment. As a main feature channel systems the possibility of supplying fresh air in the volume that is guaranteed by the functioning of full ventilation.

Cassette air conditioners require a false ceiling during installation. When compared to duct designs, cassettes distribute cooled air through the bottom of the unit. She closes decorative grille and usually has the following dimensions: 600 x 600 and 1200 x 600 mm.

Dismantling and cleaning the air conditioner

To clean the indoor unit of the air conditioner, it is necessary to disassemble it. For this, screwdrivers of various configurations and sizes are prepared. You should take care of the presence of a box for collecting fasteners. You will need electrical and functional diagrams of the device. On some models, they are printed on inside top cover.

To clean the internal elements you will need:

• clean rag;
• detergent;
• a vacuum cleaner.

The first step is to de-energize the air conditioner. This is in accordance with electrical safety regulations. Remove the plug from the socket. The top cover of the block is removed. Bolts are unscrewed, which can be two or three. Usually they are closed with decorative caps. The top cover of the indoor unit is removed. If it is covered with a layer of mold and dirt, it should be washed in the bathroom with detergents and brushes.

When disassembling the indoor unit of the air conditioner, you will need to remove the air filters. They are made of plastic and are designed for rough air purification. Sometimes they are fixed on the lid or inside the air conditioner. The filters are washed under an intense stream of water. A brush will help with this.

The airflow guides should also be removed. Blinds are removed from the grooves. To facilitate the process, you need to slightly bend them. These elements direct the flow of cold air into the room and also need enhanced flushing.

Removing the bottom cover

The next step is to remove the bottom cover. You will need to remove the drain tube and power cord. In the process of this, three latches should be pressed and the drain tray together with the outlet hose should be disconnected from the block.

Removing terminal blocks

The indoor unit of the air conditioner has terminal blocks. They are disconnected during disassembly, and then the electronic control unit and transformer are removed. In order to remove the first one, it is necessary to wring out the side fasteners, and then pull the device towards you. Before this, the ground wires are unscrewed.

Removing the fan motor

The fan motor can now be removed. To do this, the bolts are unscrewed, which are strengthened to the chassis. The evaporator is raised and the engine is pulled out along with the rotary fan. The motor must be separated from the fan, but first you have to warm up the bolt head with a soldering iron. This will unlock the thermal lock on the motor pulley. Once the fan blades can be removed, they must be washed. Assembly is carried out in the reverse order.

Cleaning the outdoor unit

Outdoor and indoor units of air conditioners are equally in need of maintenance. The frequency for the first is twice a year, which is true even with intensive use. A vacuum cleaner is required for this, but the device must be powerful enough to extract dust from external filters and heat exchangers.

On your own or with the help of specialists

If the unit is located at an impressive height, then you can unscrew the protective grille and vacuum it, as well as wipe the insides from dust. Otherwise, you can seek help from professionals who will remove the air conditioner using climbing equipment or a tower. Cleaning yourself can be done using compact senders, but the air conditioning system will have to be de-energized and turned on only 30 minutes after the end of the service.

Finally

During the operation of the split system, dust settles on the fan impeller, where a “fur coat” of dirt is formed. This prevents the passage of air flow when blowing the evaporator. The latter freezes over, and the user does not receive normal cold and intense air flow.

Cleaning the fan of the indoor unit of the air conditioner is also required when you see black flakes flying out of the appliance. This suggests that the amount of dirt is so large that it does not hold onto the internal nodes. As a preventive measure, from time to time you can dismantle the fan and wash it. chemicals. But not all models make it easy to extract this part of the system.