What is the packaged unit?

Definition of packaged or rooftop

Package Units and Roof Top units are a type of air conditioner.
It is equipped with a single, double or triple condensing refrigeration cycle (Condensing Unit) and provides the cooling load of the building in the hot months of the year.

If the heat pump technology is available in HVAC, they will also produce heating in the cold months of the year by using the compression cycle. They also use electric, water, or steam heating coils to supply the building’s heating load (generally in medium to large commercial buildings).

The main purpose of Rooftop devices is to ensure comfortable conditions for residents, which is achieved by managing temperature, relative humidity, and indoor air cleanliness. Also, using this solution eliminates the need for a central facilities room and cause to reduce the space of the facilities room.

Their ventilation section is used for the following purpose:

Treatment

Heat Transfer

Energy recovery (Heat Recovery)

Air Quality Control

Humidification

Evaporative cooling

It has a compact or advanced modular structure suitable for commercial and industrial use.

Packaged structure

Various compressors are used in the compression cycle structure according to the amount of cooling. In order to provide cooling in small and medium-sized commercial buildings, they usually use scroll compressors and recently BLDC. But in large commercial and industrial buildings, screw packages are usually used, which have high power and more complex technology. In this explanation, we try to make you familiar with the types of scroll package systems, BLDC, and their advantages. The advantage of this type of package does not need a boiler and chiller to provide hot or cold water as a source of heating or cooling. The room and piping facilities and the spaces used for it will also be removed.

Features and functions in the packaged controller

Ability to set required parameters in the packaged controller

The ability to set the required parameters in the packaged controller like HVAC, has the capability to adjust the temperature, humidity, and flow rate of supply and return air, energy saving, and air treatment.

Temperature control

For example, the packages control the temperature of the air in the places that are intended to be used.

These points are usually supply of the air conditioner, the point of return or exhaust of air to the outside of the building, and the temperature of the room.  A sensor suitable for that place is installed in each of the places and its temperature is monitored instantly.  The control system automatically measures the temperature and controls it with the closed-loop control algorithm (PID).

Humidity control

There are similar facilities for humidity control.  After installing the humidity sensor in a place (usually in the supply or in the room) where humidity control is important for the user, the amount of humidity is measured and compared with the set value. If the amount of humidity is low, the central control system sends a request to the humidifier using the closed-loop control algorithm.

Airflow control

Precise control functions can be designed and used to control volumetric flow and air quality, which are the other main functions of air conditioners.  Today, in standard control programs, various functions are considered for the control and protection of packaged units. These functions will increase the accuracy of the operation, and protect the auxiliary and main equipment of the package unit (such as the condenser fan and compressor or the types of filtration beds) and the efficiency of energy consumption in them. These functions are in such a way that in addition to the wide variety and standard performance, the user can activate or deactivate them according to his needs.

No need for programming knowledge

One of the advantages of this standard software is that the manufacturers (OEMs) of such devices do not need to be known with programming knowledge. It should be noted that even if this possibility is available, the final production plan of local manufacturers is not comparable to a professional product plan of specialized companies such as KARA RAVESH SABA.

Because the company provides advanced ventilation and refrigeration solutions with its years of experience in collaboration with CAREL Italy. This is due to the feedback of the great manufacturers of such systems in the world in the development of software and hardware. In this respect, world-class standards have taken into account that they provide many capabilities to the users.

It should be noted that it is not possible to design and develop this software using industrial control equipment available in the market. Sometimes, for small manufacturers who have limited production, it is not possible to develop research for this. Therefore, all these matters cause specialized companies to come to the field to optimize these services.

The ability of the functions to be selective

One of the good things about applying software solutions for package units is the ability to select functions.  Therefore, given the number of control functions, inputs and outputs (I/O), and other project needs, choosing optimal hardware can be cause optimizing control, while reducing costs too.

One of the favorable points that creates reliable control for employers and users is the user-friendly design of the unit control software, pages, web user interface, various displays, and features available in it. In such a way that package unit manufacturers are usually able to use and operate this equipment alone after training and initial setup.

 Compatibility of a variety of sensors, switches, and displays with a variety of KARA RAVESH SABA Company Packaged Controllers

Given that KARA RAVESH SABA is a provider of packaged unit control solutions, all accessories such as sensors, switches, and displays offered with different types are compatible with a central controller.

These products are also dedicated to the use of the ventilation and refrigeration industries and are compatible with the standards of this field, so customers can use them easily and without worrying about the equipment.

KARA RAVESH SABA’s product range is under the national VIDA brand and the production permission is issued in the operating license. Which uses a common advanced controller unit for the ventilation and condensing units with a functional software program based on experience. And it offers these products in the form of a control kit, including a complete range of sensors and related accessories.

Also, in order to complete the solution required by the customer, a wide range of products such as displays, electronic expansion valves, and their drives, etc. are proposed along with the control kit.

Vida controllers are professionally localized for the needs of domestic producers and have high reliability and flexibility and adaptability to various needs.

Other features of the compression-packaged controller kit

No need for a chiller and boiler (in case of using a heat pump mechanism or electrical heater)

Reducing pipelines and the costs related to their provision and implementation

Increasing the overall efficiency of the system to reduce two hot and cold coils to one DX coil Reducing the space required to install facilities in the facilities room and as a result, the possibility of optimal use of the building’s infrastructure

Types of packaged unit controllers presented by KARA RAVESH SABA Company

1- v.VentScroll series scroll packaged kit:

For more information about this solution and its capabilities, you can refer to the following pages.

2- v.VentModular series modular packaged kit:

For more information about this, you can refer to the following link:

3- uVENT series mini packaged kit:

The following link provides you with a more complete explanation:

To get information about the controller of this kit, you can also refer to the CAREL website at the following address: