Introducing types and the best type of fan coil

As you know, global warming has been recognized as a global problem in recent decades and many people in the world are facing this problem. Our dear country Iran is not exempted from this case and we always see problems in this field.
Air conditioning equipment can be a good solution to solve such problems, at least in closed spaces where we are doing daily work and resting day and night. One of the air conditioning equipment that is used in residential environments and different places such as office buildings, commercial buildings, etc. to optimize the air is a fan coil.
In this article, the application, benefits, and operation of this equipment are discussed. To get to know the types and the best type of fan coil, stay with us in the rest of this article.

What is a fan coil?

A fan coil is a device that complements the heating and cooling system, which consists of various components such as a ventilation fan, fan motor, distillation tray, coil (copper pipes and aluminum fins), filter, body, etc. The fan coil uses the cold water of the chiller or the hot water of the engine room boiler that enters its coil and cools or warms the ambient air by the temperature of the water and the air passing over the coil (containing cold or hot water). Fan and coil, as their names suggest, are the two main components of this product. Fan coils are produced and supplied in wall, floor, ceiling, channel, and ceiling types, which are the most widely used.

Types of fan coils

As mentioned, fan coils are produced and supplied in different types, each of which can provide good performance in environmental conditions and proper installation. In the following, the types of fan coils and how each one works are briefly described.

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ceiling fan coil

The ceiling fan coil is one of the most widely used models of this product, which is designed and produced in two types built-in and surface. The built-in ceiling fan coil is usually installed above the false ceiling and only one vent is visible through which fresh cold or warm air enters the environment. This feature of the device is hidden and not occupying the surrounding space has made the ceiling type of this equipment gain many fans.
The ceiling fan coil sucks the ambient air from the bottom and throws it back into the environment after passing the air over the coil, and the fan coil motor speed can be adjusted by the ambient thermostat, and thus the ambient temperature can be well controlled.
The important thing about ceiling fan coils is their dimensions and especially their height in terms of the possibility of placing and installing the relevant pipes on top of the false ceiling. 

wall-mounted fan coil

Wall fan coils have the same appearance as split wall units, they are installed on the wall and do not need to allocate space on the floor or ceiling of the environment. Home consumers and builders of construction projects pay a lot of attention to this fan coil model because it is newer than other models, has a lower noise level and usually does not need a wall thermostat, but the performance and speed of their fan can be controlled by remote control. Easily adjustable.

Floor-standing fan coil

The floor-standing fan coil is produced in top female, forward-blowing, and inclined models and has a ventilation capacity of up to 1200 cubic feet per minute. The performance of these fan coils can be adjusted by a thermostat. Among the advantages of the ground fan coil, we can mention easy installation, easy access, and reasonable price compared to other types of fan coils.
The plumbing of ground fan coils can be done as surface and built-in, in surface plumbing, the pipes are installed on the wall and can be seen, but in built-in plumbing, the pipes are placed inside the wall or floor, and it is more beautiful. and only the fan coil device can be seen in the environment. The affordable price, easy installation, and operation of this device have made this common model of fan coil still preferred for office or residential use.

Cassette fan coil

Cassette fan coil can be called the most modern and newest type of fan coil. As for the coils, the Cassette fan coil is installed inside the false ceiling, and only its flat panel can be seen on the ceiling, and like ceiling fan coils, only its valve can be seen, and it does not need to occupy the surrounding space, and they also offer a beautiful and modern appearance. In terms of ventilation, the fan coils are divided into two models, which are as follows.

• One-way fan coil (suitable for use on the sides of the ceiling)
• Four-sided fan coil (suitable for the middle of the ceiling)

Kasti fan coils are also divided into two categories in terms of piping, which are:

• Two-pipe cassette fan coil (they have return pipes to a coil)
• Fan coil with four pipes (it has two outgoing pipes and two return pipes for two cold and hot coils)

This type of fan coil (four pipes) must be equipped with an electric valve on the water pipe entering the fan coil. Cold or hot water flows in one of the two coils under the control of the thermostat, and the air is sucked from the internal network, and the air is blown from the side surface of the ceiling fan coil panel.
In addition, the command and operation and change of fan coil ventilation motor speed are either done by manual remote control or, like ceiling fan coils, by two-season three-speed thermostats.

Ducted fan coil

These types of fan coils usually have more power and wind throw and are used for larger environments such as hospitals, schools, offices, various factories, etc. The ventilation capacity of channel fan coils is from 600 to 2000 cubic feet per minute and with suitable static pressure, and in environments where we want to send cold or warm air to neighboring rooms without pollution, channel fan coils are a suitable option.

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Important points in choosing a fan coil

When buying a product, if we want the product we want to have good quality and performance, we should definitely consider some points when choosing. In the selection of fan coils, there are parameters according to which we can have enough information for a good choice.

Fan coil type

It is better to choose the type of fan coil experts based on the desired application, environment, and cost. Also, at the time of choosing and ordering the purchase of fan coils, you must pay attention to whether the connection of the water pipes to the fan coil is on the left or right so that you don't have problems during installation.

Capacity

The capacity of the fan coil is determined based on the calculation of the cooling load of each space, and preferably, the average speed of the fan coil ventilation motor should be used as the basis for calculating the thermal and cooling load.

Dimensions

Physical dimensions are one of the most important parameters in choosing a fan coil. If you intend to order and supply ceiling fan coils, you should know how much space the selected fan coil will occupy in the environment or false ceiling.

Coil

Coil pipes are places where cold or hot water flows. In this part of the fan coil, the common size of copper pipes is 3.8 inches, but the use of coils with 1.2-inch diameter pipes in two rows will reduce the flow pressure drop, as well as increase the heating efficiency in the fan coil.

body

It should be noted that fan coils with a single body are more suitable because in fan coils with a multi-piece body, over time, the problem of vibration and sound noise may appear between different parts of the body.

Engine

The motor or, in fact, the electric motors used in fan coils, are made integrally or can be repaired. With the passage of time, the efficiency of the system and the amount of sound produced by the device will be effective, such as the bearings used in the engine. For this reason, it is better for the motor used in the fan coil to be of low noise type with very reliable bearings. Ideally, the operating noise of the fan coil should reach less than 35 dB.

Work pressure

In towers and buildings with more than fifteen floors, the water pressure inside the pipes of the cooling and heating system as well as the fan coils will be more than 6 times, so it is necessary when choosing the fan coil, tolerable water pressure and the working pressure of the coil. Cold and hot water fan coils should be considered exactly in high towers.

Control

Since ancient times, all ground fan coils have had a manual switch to turn them on and off and change the speed, but in any case, all fan coils must be equipped with an automatic room thermostat to control performance and optimize energy consumption. In-ceiling, wall, and ceiling fan coils, the use of automatic thermostats and electric three-way valves to set the start time, change the speed or cut off the engine, especially due to the lack of easy access to them, they must have automatic control thermostat.

Approximate calculation of fan coil capacity

The estimation of the required fan coil capacity for each of the sizes presented in the table below is approximate based on the temperature conditions of the design inside and at the maximum speed of the fan, and in the medium speed, the correction coefficient of the ventilation volume of the fan coils is compared to the high speed. It is about 0.8 and about the cooling and heating power is about 0.85. If you wish, you can also contact the experts of Damatajhiz company.
In the table below, the approximate estimate of the fan coil capacity required for Tehran, Mashhad, Karaj, Isfahan, Erbil, Kabul, Sulaymaniyah, Halba, and other cities with similar weather in summer weather conditions is presented.

final word

As mentioned, choosing the right fan coil depends on factors such as geographical conditions, area size, required capacity, installation location, etc. In addition, the required fan coil should be procured from reliable and well-known centers because warranty and after-sales service are very important parameters that only reliable companies provide these services.
In Iran, the first and most reliable specialized collection in the field of building facilities equipment and all air conditioning devices since 2013 is the Damatajhiz specialized collection. You can visit the website of this collection to view the models, to know the updated price, and to buy all types of fan coils. For more information, you can call +9821-88822550 during office hours to get advice from the experts of Damatajhiz Engineering and Manufacturing Company.

Looking forward to calling and eager to meet you in the Specialized Collection of Damatajhiz

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