Recently, channel fan coil units have become more and more common among consumers. This device is equipment that has the ability to heat or cool indoor air at the request of the consumer. Simply put, such a unit can be called a heat exchanger that can be installed in any building room for any purpose, this will allow you to select a certain temperature regime at any time that will be comfortable for people inside the building.
Design features
A duct fan coil unit can have various design features, but most often the models consist of a filter element, a heat exchanger, a fan, an electric heating element and an equipment control panel. As for the filter, it is able to protect the system from the ingress of foreign particles that can penetrate along with air masses. The heat exchanger allows you to effectively cool or heat the air, which will depend on the set operating mode of the equipment at a certain moment. The fan provides air flow that is blown through the heat exchanger.
Four-pipe fan coil unit
It has an additional heat exchanger in its design and is able to receive heat from an independent source, as a result of which its operation becomes isolated from the chiller. This provides several functional advantages when using a climate system with a four-pipe unit, the main of which is the ability to freely switch between cooling and heating modes as required.
This possibility is due to the presence of two evaporators and circuits, in one of which cold water is constantly circulating, and in the other - hot. The convenience of selecting modes is complemented by the presence of a remote control with the functions of setting the temperature, fan speed and other additional useful functions.
Principle of operation
If you decide to purchase a duct fan coil, you must first familiarize yourself with the principle of its operation, which is that the air is cooled and heated, depending on the selected operating mode. Air masses are driven by a fan through the heat exchanger. In this case, the air flow is created not from air masses that are present in the room, but from fresh air that is supplied from the chiller. The last element acts as a central component in the creation of an air conditioning system. The air masses enter the chiller from the air supply unit, which draws in air from the outside.
Fan coil unit of cassette type Carrier 42 GWC 008
Cassette fan coil Carrier 42GWС008 with precise maintenance of the set temperature. False ceiling installation. The Carrier 42GWC008 two-pipe fan coil is ideal for installation in offices, information centers, shops, restaurants, bars and other large premises.
Distinctive features:
To service premises with a large area, the Carrier 42GWC008 cassette fan coil has the necessary functions:
- accuracy of maintaining the set temperatures and humidity;
- the possibility of drafts, as well as the appearance of zones of stagnant air, is excluded;
- air flow distribution in four directions, provides individual comfort;
- almost silent operation of the fan coil is ensured by the unique design of the existing centrifugal pump;
- the special design of the diffuser is able to ensure rapid mixing of the fresh supply flow and room air;
- high-performance, quality filters will help remove various impurities from the air.
Advantages of cassette fan coil Carrier 42GWС008
- Small-sized unit - only 298 mm high. The location of the four hanging brackets of the unit is aligned with the T-shaped hole and can be used to easily lift and secure the unit.
- Four-way air distribution provides individual comfort, and it is possible to adjust the air flow rate from each diffuser or even close it completely.
- The original design of the radial fan ensures low-noise operation of the unit. Thanks to this, disturbing intermittent noise in the room is completely absent.
- A highly efficient condensate pump, housed in a special sound-insulating shell, provides virtually silent and quick condensate drainage.
- Return air, purified by passing through an easily removable washable filter, enters the cassette-type unit through a large distribution grille, and due to continuous circulation, fresh air is provided in the room.
- The special design of the diffuser ensures fast mixing of the supply air with the room air. Conditioned air is directed along the ceiling and evenly distributed throughout the room.
- A thermostat with a large liquid crystal display is available on special order.
Electric motor and fan
- Optimized radial fan design for 42GWC unit.
- High efficiency.
- Quiet operation with anti-vibration engine pads.
Heat exchanger
- Optimized 7mm heat exchanger design.
- Liquid heat exchanger.
- Hollow ribs.
Distribution grille and return air filter
The filter, mounted inside the return air distribution grill, can be easily removed and washed, and due to the continuous circulation in the room, there is always fresh air. The unit, which has an elegant appearance of the front panel and distribution grille, successfully fits into a variety of room interiors.
Condensate pump
- The high-performance condensate pump located in the unit is housed in a specially designed soundproof enclosure.
- Silent condensate drainage is provided.
- Continues to work even while the unit is in standby mode.
- To prevent condensate leakage, it is recommended to install a two-way or three-way valve in the water supply system.
Note:
Cooling mode:
- incoming air temperature 27 ° C dry bulb / 19 ° C wet bulb;
- the entering water temperature is 7 ° C and the temperature rise is 5 ° C.
Heating mode:
- incoming air temperature 20 ° С,
- entering water temperature 50 ° С,
- the water consumption is the same in both modes.
Options
- Thermostat
- Motorized two-way control valve
- Motorized three-way control valve
Main advantages of the system
The duct fan coil unit has a lot of advantages, among them it is possible to highlight the provision of full cooling or heating of the room within five minutes after starting the system. This possibility is guaranteed by the method of simultaneous installation of a fan coil unit and a chiller. Among other things, the system allows you to create a comfortable microclimate in the rooms where the fan coil unit is installed. The owners of an apartment, house or building will be able to save energy.
Additional features include the ability to connect a different number of fan coil units to the chiller. But the step of the route from the chiller to the most distant fan coil unit cannot be more than six hundred meters.A duct-type fan coil unit allows you to save money that is required to create pipe routes when choosing water as a carrier.
What types of fan coil units to choose
The selection of chillers, fan coils and other climatic equipment must be carried out based on the characteristics of the serviced premises: its type, size, purpose, etc. Based on these data, it can be concluded that two-pipe devices are rational to use in industrial premises and residential buildings of a seasonal type.
More sophisticated and functional four-pipe fan coil units are universal and can be used wherever microclimate control is needed: residential buildings, shops, restaurants, hotels, office premises, public institutions, etc. Installation of this type of fan coil
Choosing a type of fan coil before installation work
If you decide to install a channel-type fan coil in a building, you must decide on what classification the system should have. Today, there are four types of designs on the market, namely: console type, cassette type, horizontal type, and cantilever type enclosed in a case. Each of these heat exchanger systems can be installed indoors using different technologies: the elements can be hung on the wall, built into the ventilation system of the building, installed on the floor or suspended from the ceiling. The main features of the fan coil unit, which influence the choice of a particular device, are the overall air capacity, as well as the cold air capacity.
Wall mounted fan coil units
The peculiarity of this type of equipment lies in its installation location. As the name suggests, it is mounted on the wall of the room. A wall-mounted fan coil is usually used in small bedrooms, shops, offices, where it is not possible to install equipment on the floor due to the presence of a plinth or lack of a false ceiling. The device is equipped with swinging louvers that control the direction of the air flow.
Benefits:
- The ability to regulate the temperature in a specific room.
- Prevents dust from entering thanks to the filter.
- The large selection of enclosures allows the equipment to fit into the interior.
- Quiet work.
- Possibility to turn off the fan coil if necessary.
Disadvantages:
- Occupies wall space, since the installation is carried out at the level of human height.
- There may be discomfort due to the air entering the body.
- Damage to the interior decoration of the room when installing the machine.
Characteristics of two-pipe and four-pipe heat exchanger systems
Before you install a duct fan coil unit, you need to decide whether a two-pipe or four-pipe heat exchanger system that uses water as a carrier will be used. The simplest piping scheme is possessed by a two-pipe system, which is why it is so common. With it, you can cool the air inside the room, and the cost of the device will be relatively low.
For the winter period, the two-pipe fan coil unit can be switched to heating mode, but for this it will be necessary to disconnect the pipes from the chiller, and then connect them to the central heating. This function can be carried out using a special valve, which is manually adjusted.
The four-pipe system contains two heat exchangers, one of them is connected to the system with a hot medium, while the other is connected to the chiller.Such a piping scheme is characterized by more complex design features, this affects the increase in the price of a fan coil, which is why consumers quite often refuse to purchase this equipment.
A four-pipe duct fan coil unit can cool or heat the air in the room, while you do not have to make particularly difficult pipe switching, you just need to select a certain mode using the equipment control panel. This is very convenient, according to the assurances of users who have been using a similar system for heating or cooling air for a long time.
Fan coil unit - what is it
In one bundle, a fan coil and a chiller, they allow you to create independent temperature control in several different rooms at once. As a result of this advantage, the fan coil system has found wide application in industrial enterprises, as well as in large premises, which are used for offices, hotels, warehouses, etc.
The fan coil unit is designed in such a way that the device can be switched on and off automatically, as well as maintain the required heat and cooling capacity. Equally important is the fact that the fan coil system makes it easy to expand the number of installed equipment, depending on the number of consumers, the required power and other features.
Chiller-fan coil system and its advantages
The main advantage of the chiller-fan coil system is the flexibility of operation to ensure high-quality air exchange in various rooms. A large number of fan coil units of different power operating independently of each other can be connected to the chiller, which is designed to prepare the heating medium.
In addition, using the chiller-fan coil system, it is possible to control separately the operation of each fan coil connected to the chiller, both from the built-in and from the remote control panel. If there is such a need, it is possible to program the fan coil system into a single thermal mode.
An indisputable advantage is also the rather simple possibility of increasing the power of the system, which significantly expands the scope of application of fan coil units. Well, among other things, it is worth noting the technical capabilities of installing a chiller and a fan coil: the distance between them can be almost unlimited, everything largely depends on the capacity of the pumping station.
Fan coil types
So what is a fan coil unit - what is it? How does it work and what types of fan coil units are there?
The fan coil unit includes a heat exchanger and an electric fan, a filter with a control panel, which allows you to adjust the settings of this climatic equipment. An electric fan in a fan coil unit is designed to blow air into the room through the ventilation duct system, and the heat exchanger to cool it to the required temperature.
As mentioned above, today there are different types of fan coil units. The simplest design has a cassette fan coil unit, which is mounted on a suspended ceiling. Fan coil units differ in design, installation method and other features that allow them to be seamlessly connected with various climatic technology.
Depending on the number of heat exchangers installed, the following types of fan coil units are distinguished:
- Two-pipe fan coil units;
- Four-pipe fan coil units.
According to the place and method of installation, fan coils are cassette, duct, ceiling, wall and floor. In addition, fan coil units can be either encased in a housing or without it - open-frame fan coil units.
Installation technology
Before starting work, you must definitely consider the connection diagram of a channel fan coil, this will eliminate errors, which is especially true for inexperienced novice craftsmen who have not previously encountered solving such problems. Due to the fact that the system, in which the chiller and fan coil are present, is distinguished by rather complex design features, it is best to entrust installation work and adjustment to highly professional specialists. They will be able to complete the installation by correctly installing the equipment in the place where its work will be most effective. In this case, you can take advantage of the warranty and service. Most often, supplying companies guarantee full service in case of breakdowns within 24 hours.
If you yourself plan to deal with these manipulations, then at the next stage it will be necessary to assemble the piping units, and this can be done after installing the necessary valves, taps and pressure and temperature control devices, which is a very important task. The next step will be the installation and insulation of the pipe, as well as the installation of a condensate drainage system, which will protect the system from premature failure even before the end of the warranty period. When a high-pressure channel fan coil is installed, manipulations will have to be made to connect the devices to the power supply network. The system must be pressurized and its tightness checked.
The last stage is the supply of water, which acts as a carrier in the system. Before determining the maintenance side of the Clint duct fan coil, it is worth considering whether you can carry out all the necessary calculations that are needed to carry out the work. They will allow you to take into account the functional load that will be on a particular fan coil. Among other things, experts will help you determine the characteristics of each room in the building, which allows you to choose the right equipment for the most efficient work.
Cassette fan coil units
The cassette fan coil unit is indispensable for large spaces with high ceilings. Placed in the inter-ceiling space. Only the decorative grille is visible, through which the air flow is carried out. The air ducts remain hidden.
Benefits:
- All communications are hidden during installation.
- Possibility of adding fresh air.
- Simple installation and maintenance.
- High power.
- The ability to serve very large premises.
Disadvantages:
- It is necessary to create a duct network.
- It is advisable to provide for installation at the stage of construction or renovation of the building.
- The need for high ceilings, since the installation takes up a significant part of the space.
Which fan coil unit will be installed in the room will depend on various factors. The selection of equipment, project development and installation are trusted by qualified specialists. You can contact Smart Trading managers for advice. They will help you find the necessary installation in the catalog on the site, carry out delivery and connection.
Why choose a fan coil unit?
If you decide to install a fan coil unit indoors, you will find a heat exchanger with a fan inside. All of the above components are enclosed in one compact housing, which looks very aesthetically pleasing and does not take up much space, in particular when mounting on the ceiling. That is why experts advise resorting to such a solution. By installing this system, you can simultaneously solve the issue of air conditioning and ventilation, which saves money on the purchase of appropriate equipment. The equipment works with minimal noise and does not involve complex maintenance, which is undoubtedly an undeniable advantage.
Console fan coil units
A console installation, also called a floor-to-ceiling fan coil, is used to maintain comfort in offices, shops, hotel rooms, rooms in private houses with an impressive area and low ceilings. Such devices are often placed under the ceiling. There is also the possibility of floor mounting. In this case, the unit is mounted vertically against the wall.
Benefits:
- Budget cost.
- Work with a wide temperature range.
- The ability to maintain comfort in a large room.
- Mobility and the ability to be placed horizontally and vertically.
- They can be installed where there was no room for other models: on the wall, under the ceiling, under windows, above furniture.
Disadvantages:
- Intervention in the finished interior.
- The need to create a duct system to provide ventilation.
- Large dimensions.
General information about cassette fan coil units
Cassette fan coil units allow you to effectively create a zonal microclimate, therefore, they are ideal for use in small industrial or residential premises.
Externally, cassette fan coil units resemble the internal block of a cassette split system. Their main advantage is that they are mounted invisibly: behind a suspended ceiling. Therefore, cassette fan coil units represent a modern and ergonomic solution to the problems of air conditioning and heating for a wide variety of rooms.
The cassette fan coil units are controlled by a remote control, usually mounted on the wall.
