The fan coil unit should be exposed or concealed according to the specific conditions of the room and the decoration requirements, and the installation location and form should be determined. The fan coil unit plus fresh air system is divided into two parts, the central air-conditioning fan coil unit and the fresh air system. Fan coil unit is referred to as fan coil unit. It is one of the end devices of the air-conditioning system and consists of small fans, motors and coils (air heat exchangers).
This low level of rapid growth is not optimistic. The foreign coil manufacturing industry represented by the 20th century has successively completed product upgrades and launched a new generation of products. At that time, China's air-conditioning industry was intoxicated by the fact that domestic coils were close to foreign products in terms of cooling capacity, noise and other isolated parameters, while ignoring the real gap in comprehensive performance and use effect. As a result, this product update failed to cause any repercussions in China's air-conditioning industry. In fact, the new generation of foreign coil units are ahead of ours in terms of performance, variety and air conditioning. Fan coil units are ideal end products for central air conditioners, and are widely used in hotels, office buildings, hospitals, commercial residences and scientific research institutions. It is understood that there are many types of coils to meet the design and selection of different occasions, such as horizontal concealed fan coils (with bellows), horizontal exposed coils, vertical concealed coils, vertical exposed coils, clamps Type double outlet coil, cassette type four outlet coil, wall-mounted coil, etc.

(2) The coil should meet the indoor air environment required by the process production. Some production processes of cassette fan coil units require a high temperature and humidity environment. The temperature and humidity conditions not only directly affect the normal operation of the production process, but also affect the output and quality of products. Fan coil units such as textile production, precision instrument production and pharmaceutical production technology. (3) Exclude indoor harmful gas and concentrated heat and humidity. The carbon dioxide in the comfortable air-conditioned room and the peculiar smell in the bathroom, the toxic and malodorous gas produced in the process air-conditioning workshop, and the local parts that emit a lot of heat and humidity, all need to be eliminated by the air-conditioning and exhaust facilities of the fan coil unit to obtain good quality. indoor air environment. Environmental requirements 1. The inlet cold water temperature of the coil should not be lower than 5 ℃, otherwise it may cause condensation of the unit; the inlet water temperature should not be higher than 80 ℃ (usually 60 ℃), otherwise it may cause the heat exchanger copper tube corrosion. 2. It is recommended that the operating ambient temperature of the coil unit is 16 ~ 36 ℃ when cooling, and 10 ~ 30 ℃ when heating; the relative air humidity is ≤ 90%.