Multi split system air conditioners for 5 rooms. Internal duct blocks of multi-split systems

In this article: the history of the creation of multisplits; their difference from conventional split systems; pros and cons of multisplits; climate systems with one and several compressors; multi-block air conditioner - compare and choose; what should be taken into account when installing a multi-split.

Such familiar and seemingly well-known split systems turned out to be completely difficult - behind the brand, series and price there is more hidden than the natural desire of manufacturers to extract maximum income. It’s simple - if you want the split to supply only cold air, then buy a cheap model, but if you need a truly comfortable atmosphere in the house, then cold air alone will not be enough.

We continue publishing materials about climate control technology - let's talk about multi-splits and find out what kind of air conditioners they are.

One external unit for several internal ones

In the early 30s of the last century, dividing a household air conditioning system into two blocks was not just a whim of the inventors, but a necessity - poisonous ammonia was used as a refrigerant in those years, the leakage of which was unacceptable. With the discovery of a new type of refrigerant - freon - the situation changed, since it was safe for humans. Household air conditioners became monoblock, intended for installation in window openings. Years later, Japanese air conditioner manufacturers returned to the two-unit design - Toshiba developed the first split systems, and Daikin went further, creating in 1969 a household air conditioner consisting of one external and two internal units, called multi-split.

The household version of multi-zone air conditioning systems - multi-block air conditioners - are used for regulation climatic conditions in large rooms separated by airtight partitions. Because the external unit If there is only one, then the typical for our time covering the facades of buildings with dozens of blocks from split systems does not occur, i.e. the original architectural appearance of the buildings remains unchanged.

Multisplits are produced in two design solutions - with one and several compressors. The number of indoor units for models with one compressor is limited only by the compressor power, i.e. the total power of the hair dryer units should not exceed the power of the external unit (ideally, the compressor power should be approximately 15-20% higher). Buyers are offered multisplits of this type with a standard set of internal units, or future owners of the split system can separately purchase an external unit and then select required amount internal hair dryers to it. Systems with several compressors in an external unit (no more than 3) are designed to work with a limited number of internal units equal to the number of compressors - one compressor for one hair dryer unit. The difference between multi-splits with one and several compressors is that the indoor units in the first type of air conditioning units can only operate in the same mode - either cooling or heating, while the hair dryers of multi-compressor air conditioners operate in modes independent of each other.

Air conditioning systems of this type are equipped with conventional and inverter compressors; indoor units can be wall-mounted, ceiling-mounted, floor-mounted, cassette or ducted. General principle multisplit operation is identical household air conditioners other classes. Models equipped with an inverter compressor have some advantages in terms of energy savings - system electronic control is capable of extracting heat or cold from empty rooms served by a multi-split, transporting them to rooms with increased load on the climate system. For example, if in the summer several people gather in the hall of the house, then the multisplit will take the cold from other rooms (bedrooms, children's rooms, etc.), the climate in which is brought to the level specified by the user. During installation of the external unit, one direction of the refrigerant line is set as a priority - this room will be serviced by the climate control device with special care. Usually this is the room with the largest number of working equipment (for example, a server room) or the constant presence of a significant number of people.

Characteristics of multisplits

Multi-system air conditioning systems are ideal for installation in buildings classified as cultural monuments and houses, architectural design which cannot be equipped interior spaces conventional splits - the external block can be placed outside the facade, for example, on the roof. Regardless of the installation location of the outdoor unit, significant space savings are achieved, because for two-block split systems you will need more of it - a multiple of the number of indoor units.

Reducing the number of external units to one reduces maintenance costs climate system— refilling with refrigerant, cleaning, preventive maintenance, etc.

The user receives more freedom in choosing the power of the indoor hair dryer unit for each serviced room, depending on its area, the number of constantly present people and the number of operating equipment.

The power supply only needs to be connected to one external unit - the internal units of the multisplit receive electricity via a cable from the compressor unit.

Inverter multisplits are more economical than two-block split systems with an inverter compressor.

Let's move on to the negative characteristics. The first disadvantage of multi-unit splits is that if the units in the external unit break down, the air conditioning system will fail completely.

All multisplits are more expensive than their corresponding power models with one external and one internal unit. At first glance, this looks strange, since there is only one external unit - the higher price is explained by the fact that the installation of such an air conditioning system is more difficult, taking into account the several times longer route for the refrigerant, the complex layout of channels for condensate removal and the significant weight of the external unit (over 50 kg). Multisplits are equipped with more complex system control responsible for temperature conditions in each of the serviced premises separately, which requires precise adjustment of the compressor operation and ventilation unit. Also, prices for equipment of this class are regulated by the manufacturers themselves, who prefer to maintain prices for high level to give it more status.

Taking into account the high power of the compressor, the external unit of the multisplit produces more noise during operation than a conventional split.

Choosing multisplit

I propose to study the characteristics of external units, which will not be easy for the buyer to choose - first you need to choose them, and select internal hair dryers after. IN comparative review External units from multi-systems from popular Japanese manufacturers Mitsubishi Electric, Daikin and Toshiba, with equal cooling power, will take part.

(*) - the external unit of any split system is involved in cooling or heating the refrigerant, performing the functions of ventilation and drying indoor unit(And);

(**) - usually hair dryer blocks are selected for the external multisplit unit at the rate of one block per room. The power of each indoor unit is determined by the size of the room being served, and its location is determined by the interior features of the room.

MXZ-2C52VA, Mitsubishi Electric

Let's analyze the collected information on the external blocks of multisplits:

• Among the models under consideration, the Mitsubishi unit has the greatest energy efficiency, i.e. its efficiency is higher than that of the other two;
• The Mitsubishi unit weighs more than the other two - it must be installed on solid foundation(hollow bricks will not work). The Toshiba model weighs almost 10 kg less than others; accordingly, fewer requirements are placed on its mounting base;
• the device from Mitsubishi allows you to extend the longest line to it without additional injection of refrigerant;
• all three models are made in Thailand, have the same warranty period and will last approximately the same period;
• the blocks in question are being produced largest producers climate technology in the world;
• all units are equipped with inverter compressors, providing effective work air conditioning systems in heat pump mode;
• Only a Daikin brand unit allows more than two indoor units to be connected to it. As a result, the climate system, composed of three internal hair dryers, will create a favorable atmosphere in three rooms isolated from each other at once;
• The lowest cost is the Toshiba brand external unit.

3MXS52E, Daikin

Conclusion: based on the results of the analysis, it is not possible to clearly recognize one of the three models considered as the best, since each of them has unique pros and cons - the Mitsubishi unit consumes the least amount of electricity, the Daikin device is capable of working with three indoor units simultaneously, and the Toshiba external unit is cheaper others, although it is inferior to them in a number of parameters. Final decision remains with the homeowner - what is more important to him, energy efficiency and performance, the number of units in the multi-split system or the total cost of the air conditioning system.

RAS-M18GAV-E, GAV series, Toshiba

Features of installing multi-split air conditioners

The first and most important task is to decide where to install the external unit. Unlike split systems, the external units of multisplits must be set so that the length of the freon line leading from them to each internal unit does not exceed the maximum allowed by the manufacturer, otherwise the quality of the climate system will seriously decrease.

It is best to install an external unit on the roof of the building, so that it will not “decorate” the facade, and in this case it is much easier to carry out preventive maintenance after the work is completed. If installing the unit on the roof or facade is impossible for some reason (for example, because the freon line is too long), then it is mounted in the attic, balcony or basement. However, placing the external unit indoors is undesirable, because if there is insufficient ventilation, it will overheat, which will lead to frequent system shutdowns and increased wear of the units.

Now about the tubes and wires connecting the multi-split units to each other - installers invariably want to run them along the facade of the building, covering the outside with an unattractive plastic box, because... this is easier to do than running communications through shafts inside the building. If there is a sufficient distance between the blocks, you should insist on a hidden installation of the main line, since it should not be exposed to the changeable external atmosphere.

Regardless of the type of indoor unit you choose (wall-mounted, cassette, etc.), it is necessary to resolve the issue of draining condensate from the hair dryer at the installation stage of the multi-split - ideally, it should be discharged into the sewer system.

To solve air conditioning problems, multi-split systems are more suitable than others if:

• the rooms that are to be serviced by the climate control unit are in the stage of rough renovation (i.e. without finishing the walls) - laying a freon line into the walls in this case will be cheaper;
• near the serviced premises there is a balcony of sufficient area where you can install an external unit;
• the windows of the rooms where the multi-split indoor units are supposed to be installed face one side of the house - in this case, the length of the pipeline will be the shortest and will not exceed the standards established by the manufacturer.

Focusing only on the cost of the external multisplit unit will be incorrect - depending on the power, the number of functions performed and the manufacturer, the internal units will also cost a considerable amount (on average, the price of one hair dryer unit will be 25,000 rubles).

From the following article you will learn about ceiling-floor split systems, about their technical specifications and functional features.

Description

In a multi-system, one outdoor unit with a power of 5 to 9 kW is connected to 2 to 5 indoor units of the Split and Sky class, which can be of different types, performance and installed in different rooms. They operate in only one mode at a time - cooling or heating, but in each individual room you can set and maintain your own temperature value.

All external units are equipped with a reliable, highly efficient Daikin Swing compressor, as well as the most efficient and economical inverter on the market. Daikin inverters offer the highest performance coupled with superior efficiency. The secret to the operation of Daikin inverters is the continuous operation of the compressor and smooth power control. Inverter technology can be compared to the operation of the gas pedal in a car - the harder you press the gas, the faster the car goes. So here, the higher (or lower) you set the temperature compared to the current one, the more powerful the compressor works. And when the desired temperature is reached, the air conditioner speed decreases. After which, it smoothly maintains a comfortable temperature.

Specifications

Cooling capacity kW. - 9

Heating capacity kW. - 10.4

Power consumption cooling kW. - 2.65

Power consumption heating kW. - 2.67

Dimensions (HxWxD) mm. - 770x900x320

Weight, kg. - 73

Sound pressure level max. dBA. - 52

Maximum pipeline length m - 25

Maximum height difference m - 15

Pipe diameter (liquid) mm. - 6.4*5/9.5*2

Pipe diameter (gas) mm. - 12.7*1/15.9*2

October 2019

Independent cooling of five rooms

A multi split system or multi-zone air conditioner can do this.

You are on the website of an engineering company: we will select, provide best price, let's install it!

Models of multi split systems for 5 rooms

Are you looking for an air conditioner for five rooms? Then...:

• Firstly, let me congratulate you: few people were able to earn enough for five independent rooms
• Secondly, you are at the address: sale and installation of multi-zone, multi-split systems and duct air conditioners- our profile, our main and only activity

A multi-split system with one external unit for five independent rooms allows you to preserve the design and aesthetics of the building facade. The efficiency of such systems is usually higher, which means less costs for cooling or heating rooms. Variability is incredible due to the possibility of using internal blocks various types: wall-mounted, cassette, channel, console of various designs and power.

Below are just a few options for external units of such systems. It is worth focusing attention: it is necessary for an engineer to visit the site for a more accurate assessment of the required equipment, both from the point of view of technical sufficiency (the ability to pump a certain length of the line, taking into account the removal of all components, the need for cooling power), and from the point of view of the variability of solutions: for example, the use duct air conditioners to ensure completely hidden installation.

The promotion applies to many models: standard installation - as a gift! Check the final price with the managers: the cost of a multi-split system with installation will pleasantly surprise you!

Installation of multi split systems

An air conditioner that cools five or more rooms is already engineering system cooling. Entrust installation in order to save 3000-5000 rubles. not a professional team performing general construction work and installing air conditioners insofar as this is a mistake, the cost of which is not only time and nerves in case of unsuccessful installation, but quite noticeable losses associated with restoring the functionality of the multi-split system, as well as the possible partial disruption of repairs already carried out to correct communications .

Our installers perform day after day, year after year the only job which they can do: quality installations air conditioning and ventilation systems. If more complex solutions are required, such as implementation duct air conditioning, creating supply and exhaust ventilation in a country house or ventilation in an apartment - our engineers and designers will come to the rescue, who will be able to bring the facility to the launch of the systems and delivery to the customer.

About the company "Project Climate"

All equipment sold is certified and is covered by a full factory warranty, just as we provide a guarantee for the work we perform on installing air conditioners and ventilation systems. Contact us, we are ready to offer some of the most competitive prices for both equipment and installation work.

Multi split system for 5 rooms is an air conditioner with two indoor units and one outdoor unit.
Installation multi-split systems for 5 rooms has some advantages compared to using two separate "splits". These advantages are mainly due to the fact that a multi air conditioner has only one outdoor unit. So, multisplit is easier to install. Another point in favor of multi-split systems for five rooms is maintaining the aesthetics of the building.

Multi-split system - air conditioning for 5 rooms

It is very easy for an inexperienced user to get confused in the “split constructor”. But manufacturers take care of their customers and place tables in the instructions that help them choose air conditioner for 5 rooms and for another number of premises to absolutely anyone, even a person very far from technology.

The tables contain all valid block combinations. The user only needs to decide on the quantity and understand which indoor unit is optimal for each room. For most brands, it is possible to connect indoor units to the outdoor one different types and different powers. For example, when installing an air conditioner for five rooms, you can use a 3 kW wall-mounted air conditioner in the bedroom, a ducted air conditioner with a cooling capacity of 5 kW in the kitchen, and so on, depending on your needs and wishes.

Buy a multi split system for 5 rooms in St. Petersburg (SPb)

"Mr. Climate" is an online store, as well as a showroom where you can buy a multi split system for 5 rooms in St. Petersburg (St. Petersburg). In our store:

• affordable prices;
• large selection of brands;
• competent consultants;
• free delivery in St. Petersburg and Moscow;
• delivery by transport companies to other regions of Russia.

If you have already chosen and are ready buy a multi split system for 5 rooms or if you want to receive more detailed information about prices and characteristics of goods, please contact the managers by phone or email.