What is a fan coil

Fan coil is one of the most widely used air conditioning equipment, which is used for cooling in residential, office, commercial, etc. environments all year round. In this article, we will fully discuss what is a fan coil and the description of its types.

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Types of fan coils

Fan coils are a heating and cooling system like split duct, but the main difference between the two is that split duct uses Freon refrigerant gas for cooling. But the fan coil uses the water that enters the coil from the chiller or package and cools or heats the air by the temperature of the water. Fan and coil, as their names suggest, are the two main components of this product. Fan coils are produced and supplied in standing, wall, floor, ceiling, channel, and ceiling types, which are the most widely used. Join us to learn more about the unique features of fan coil models, the workmanship, and the image of each of them.

ceiling fan coil

The ceiling fan coil is one of the most widely used models of this product, which is used in two types of built-in and surface.
Often, in built-in models, the ceiling fan coil is placed behind the false ceiling, and only one vent is visible from which fresh cold or hot 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 below and throws it back into the environment after passing the air over the coil and the engine speed can be adjusted by the ambient thermostat 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 units, they are installed on the wall and do not need to allocate space on the floor. Home consumers and builders of construction projects pay a lot of attention to this fan coil model because it is newer than other models, it has less noise, and usually, they do not need a wall thermostat, but the performance and speed of their fan The remote control device is easily adjustable.

Floor standing fan coil

Ground fan coils are used for both heating and cooling the environment. Easy installation and reasonable price compared to other types of fan coil are among the advantages of this type of fan coil. The ground fan coil is produced in top female, female facing, and inclined models and has a ventilation capacity of up to 1200 cubic feet. It is placed on the floor of the environment and can be adjusted by the thermostat. The plumbing of ground fan coils can be done in two ways: exposed or built-in, in exposed plumbing, the pipes are installed on the wall and are visible, but when the plumbing is built-in, the pipes are placed inside the wall or floor, which It is more beautiful and only the fan coil device can be seen in the environment. The affordable price, easy installation, and maintenance of this device have made this old model of fan coil still preferred for office or residential use.

cassette fan coil

One of the most modern models of fan coils can be mentioned as Kashi fan coils, Kashi fan coils are installed on the ceiling.
Based on the way of ventilation, there are two types of fan coils, one-way and four-way. One-way fan coils are suitable for use on the sides of the ceiling and four-way fan coils are suitable for the middle of the ceiling. In terms of the pipes connected to the device, Kashi fan coils are divided into two groups, two-pipe and four-pipe, in such a way that two-pipe fan coils only have return pipes to one coil and four-pipe. They have two outgoing pipes and two return pipes for two hot and cold coils. This type of fan coil must be equipped with an electric valve on the water pipe entering the fan coil and also, under the command of the thermostat, cold or hot water flows in one of the two coils. Air is sucked in from the internal network and air is discharged from the side vents of the fan coil. The Kasti fan coil is installed above the false ceiling and like ceiling fan coils, only its valve is visible and does not need to occupy the surrounding space, and they also offer a beautiful and modern appearance.

ducted fan coil

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

To buy, view the price, and compare different brands and models of fan coils, you can refer to the specialized website of the Damatajhiz collection (the first and most reliable site for selling building facilities equipment - since 2013).

What are the important components of the fan coil?

Because fan coils are manufactured and supplied in different types, each of them may have its own components, but the common and important components used in fan coils are as follows.

Fan: The fan is responsible for circulating the air inside and outside the device, which is driven by a fan motor or an electric motor.

Fan motor: The electric motor or fan motor rotates and adjusts the fan speed of the device, which is available in two forms, three-round or four-round. Electric motors are controlled by a key or digitally and are usually controlled by an environmental thermostat that is installed on the wall.

Thermostat: Thermostat is one of the main components of fan coils that controls or measures the temperature of the space. This is done by turning the electric motor or turning it on and off.

Coil: Coils are fan coil heat exchangers that are often made of copper tubes (due to the high heat capacity of copper) and aluminum fins. Coils play the role of water conduit in fan coil. And it is available in two rows and three rows. The temperature of the air exiting the fan coil depends on the temperature of the water inside the coil, for example, if the temperature of the water inside the coil is warm, the air exiting the device will also be warm, thus causing heating. Ambient air. If there is cold water in the coil, the cooling process is done in the same way.

Filter: Filters are placed in the inlet of the fan coil and thus prevent the entry of dust and foreign objects such as insects into the device. In this way, not only the air coming out of the device will be clean, but also the useful life of the device will be increased.

Electric box: The motor that works inside the fan coil is an electric motor, the electric box is used to feed and operate the motor.

Drainage: In order to collect the water droplets obtained from the distillation in the coils, a sloping tray is installed in the fan coils and a pipe is placed to drain the water.

Important points in choosing a fan coil

When buying a product, if we want the desired product to have the right quality and performance, we should 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

Like many other products, fan coils are produced in different types. Ground, ceiling, ceiling fan coils, etc., each of these items has its categories. It is better to choose the type of fan coil by experts based on the desired application, environment, and cost. Also, when choosing and ordering the purchase of fan coils, you must pay attention to whether the water pipes connect to the fan coil on the left or right; Don't run into problems during installation.

Capacity

One of the important parameters to pay attention to is the cooling and heating capacity of the fan coil; Because it deals directly with the efficiency of the system. The capacity of the fan coil is determined based on the cooling load of the entire space, and should preferably be based on the average cycle.

Dimensions

As a rule, the physical dimensions of the product are one of the important parameters at the time of selection. Especially in the case of ceiling and ceiling fan coils, if you intend to order and supply these fan coils, you should know that the selected fan coil fits in the space installed on top of the false ceiling or inside the ceiling, or how much of the surrounding space will occupy, so you must pay attention to the physical dimensions of the product.

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 that have a 1.2-inch diameter pipe 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 the fan coil with an integrated body is more suitable; In multi-piece body fan coils, the problem of vibration and noise between different parts of the body may appear over time.

Engine

The motor or the electric motors that are used in the fan coil are built in an integrated or repairable form. With time, some things will affect the efficiency of the system and the amount of sound produced by the device; Like the bearings used in the engine.

Work pressure

In towers and buildings with more than fifteen floors, the water pressure inside the coil will be more than 6 times; When choosing a fan coil, it is necessary to consider the tolerable water pressure and the working pressure of the cold and hot water coil of the fan coil, even 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 an automatic thermostat and electric three-way valve to adjust the start time, change the speed or cut off the engine, especially due to the lack of easy access to them, must have an automatic control thermostat.

You can also read the article TWO PIPES OR FOUR PIPES FAN COIL UNITS ! for more information.

Final speech

The specialized collection (Damatajhiz) (the first and most reliable authority in the country in the field of building facilities equipment and all air conditioning devices), offers you all kinds of sand filters and hundreds of other products, guaranteeing the originality of the product, valid warranty, and reasonable price. In addition, if you have any questions about choosing and comparing the brands of this product, you can get free advice from the heating equipment experts.

In Iran, the first and most famous specialized group in the field of building installation equipment, air conditioners, and all equipment for swimming pools, saunas, and jacuzzis since 2004, DamaTajhiz is a specialized group. Refer to the time of this group. For more information, you can get advice from the experts of DamaTajhiz Engineering and Production Company by calling 021-88822550.

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