Multizone air conditioning system: circuit, operation principle, mounting features and feedback

What is a multi-zone air conditioning system? In fact, these are temperature control devices that are used in enclosed spaces. The difference from conventional split-systems lies in the presence of one control unit. Freon in this case is in a single highway. The outdoor unit is most often installed on the roof of the building.

A splitter is used to connect the air conditioners. Disadvantage of devices of this type is their high cost. However, it should be noted that the models have a high efficiency factor. In order to understand the multi-zone devices in more detail, we need to consider their scheme.

Multizone air conditioning: scheme

The multizone system includes one outdoor unit, which is installed with a powerful fan. Compressor for it is selected high-frequency type. The inter-unit cable is moving away from the power supply. A network converter is used to manage the system. Modules in multizone systems are used at different frequencies.

The indoor units are connected to the highway. In addition, the multi-zone system includes control panels. The signal is then fed to the central control unit. To adjust the temperature, conventional infrared remote controls are used. The expander is connected via a common backbone. A remote valve is used for freon control.

How does the system work?

The multi-zone central air-conditioning systems operate by supplying Freon along the common highway. The circulation of air takes place with the help of a fan, which is located in the external unit. To supply voltage to the device there is a compressor, which is controlled by a network converter.

It is also worth noting that in the chain there are splitters. They are responsible for individual indoor units that are connected to a common system. The central module monitors the power supply of the equipment. To adjust the temperature in the rooms, a remote control is used, from which signals are sent to the central unit, which in the future are subject to processing.

Mounting the model

Installation of a multi-zone air conditioning system in a residential building takes a long time. The external unit, as a rule, is placed on the roof of the room. The inter-unit cable can be mounted on the clamps. In this case, the power supply with the expander must be located near the module. Internal units can only be installed through splitters. For this, it is necessary to lay additional networks. To secure the indoor unit to the wall, stands are installed. The remote valves must be located behind the splitters.

Reviews about devices for two indoor units

Multizone air conditioning systems for two blocks reviews from buyers receive a positive nature. If you believe the consumers, then modern models are able to easily maintain the temperature in a house of up to 150 square meters. Meters. The coefficient of cooling capacity for modifications reaches 10 BTU.

Also worth noting that the market is represented by many devices with filters that do not dry the air. The energy consumption indicator for multi-zone systems of this type does not exceed 340 W. Dehumidifiers are used with the control unit and without it. The height of the installation of the highway from different manufacturers may differ. The efficiency coefficient for systems of this type starts from 80%.

Devices with three indoor units

Central air-conditioning systems for three indoor units, as a rule, are installed with several modules. Filters in devices are used in different protection classes. Modern models are distinguished not only by a high efficiency factor, but also by a powerful fan. Compressors are used for 2, or 5 kW. The operating frequency is 45 Hz.

Many air conditioning systems are manufactured with protected highways. Distributors are installed, as a rule, with control units. The noise level of the models is about 75 dB. To adjust the temperature, infrared remote controls are often used. Sensors for multi-zone systems are built-in type. Power supplies are available at 230 V. Many buyers consider these devices to be effective, but they are expensive.

Five-unit systems

A five-block multi-zone air-conditioning system is characterized by high power. Description of the devices should start with the listing of indicators. Their efficiency ratio is 85%. Also worth noting that the models have several modules. Distributors can be installed with or without transducers. Some experts say that the models are difficult to install.

Each indoor unit needs a separate expander. The service area of the devices is 120 cubic meters. Meters per hour. Filters for models are used with protection systems. There are many modifications of the multizone type with built-in sensors on the market. The parameter of cooling capacity starts from 35 BTU. Fans are of different diameters. In this case, much depends on the capacity of the equipment.

Reviews about devices with VRV Plus technology

Systems with VRV Plus technology are very popular. As a rule, modifications to two indoor units are presented on the market. The coefficient of cooling capacity starts from 30 BTU. Many models are able to boast of quality blocks that work in an economical mode. Modules in devices are used with blockers.

Models are great for panel houses. The power supplies are used at 200 V, and the operating frequency on the average is 40 c. Fans are used with powerful compressors. Coolers in this case are controlled by the central unit. The highway may be installed at an altitude of about two meters. Many models work from several modules.

Models with VRF technology

A multi-zone air conditioning system with VRF technology is produced with two or three blocks. The efficiency index of the models is very high. If you believe the reviews of buyers, then the devices are easy to manage. An expander is needed to connect the units. Modules for systems are only of a wired type. Power supplies for them are selected for 220 V. The operating frequency for systems of the multizonal type averages 45 Hz. Fans, as a rule, work directly through compressors. The optimal height of the indoor unit is 1.8 meters.

Some air conditioning systems are made with sensors. They operate from modules that connect to the central control unit. The outdoor unit of the multi-zone air conditioning system can be installed on the roof. Models of this type are great for storage space. Their rated power is 4 kW. The mains are used with an ionizer and without it. Dehumidifiers are installed mainly near the module.

Models of 3 kW

A multi-zone 3 kW air-conditioning system is usually made with three indoor units. The average cooling area is about 220 square meters. Meters. Some modifications have several compressors. The indoor units are installed behind the expanders. Models with a power supply of 200 watts are able to maintain the operating frequency at 45 Hz. They use a pulse converter. Freon can be used in different classes.

Modern air conditioning systems operate from the channel module. In this case, the temperature is set directly through the consoles. The installation of the trunk is carried out with the help of locks. The indoor units may be installed at low altitudes. In this ray, much depends on the system manufacturer.

Devices for 5 kW

The multi-zone air-conditioning system for 5 kW has a high parameter of cooling capacity. Expanders in this case are suitable only with adapters. If we talk about shortcomings, we should remember about the high level of noise. Also, models of this type do not allow a high drop in the highway. There is a heavy load on the spring unit. It is also worth noting that the sensors in the models are only of the built-in type.

If we consider the device for three indoor units, then the efficiency factor does not exceed 65%. Many models are used with contact expanders that are controlled from modules. Dehumidifiers are very rare. The heat output is at level 35 BTU. The market has many air conditioning systems capable of operating at a frequency of 55 Hz, and power supplies for them are selected at 200 V. The energy consumption indicator for the models of the multi-zone type, as a rule, is in the 340 W area.

Models with a capacity of 10 kW

Multi-zone air conditioning system for 10 kW can operate from several modules. If you believe the feedback of buyers, then the models are great for office space. The coefficient of cooling capacity is 30 BTU. The frequency of the systems is about 45 Hz. Some models are produced by two compressors. Thus, a powerful fan is installed in the indoor unit.

Ionizers are found only in modern modifications. The noise level is 60 dB. If we consider the devices in three blocks, then they have two modules. Splitters are installed with expanders, or without them. Internal units are often made with filters. Remote valves can be mounted via the central line. To divert freon, an interconnection type cable is used.