Coil system components: fan coil, inlet and return water valve, Y-type filter, solenoid valve/water valve, control panel, return air duct and tuyere, heat preservation, fresh air duct, water pipe and metal hose.
Fan coil is the ideal end product of central air conditioning. Fan coil is widely used in hotels, office buildings, hospitals, commercial and residential, scientific research institutions and other places.

Fan coil works.
Its working principle is that the fan sends indoor air or outdoor mixed air into the room after being cooled or heated by the surface cooler, so that the indoor temperature is reduced or increased to meet people's comfort requirements.
Key features.
Advantages: small size, high efficiency, low noise and low energy consumption.
The body structure is exquisite, compact, sturdy and durable. The coil is made of high-quality galvanized sheet casing. The condensate water pan is integrally formed by molding process. There are no welds and solder joints. The thermal insulation material conforming to the fire protection code is integrally connected to the water pan.
Fan coil.
Disadvantages.
Because this method is only based on convection heat transfer, and the indoor can not reach the best comfort level, it is only suitable for people to stay in a short time places, such as: offices and hotels, and not for ordinary residential, due to the increase of the fan, the need to increase the wind pipe, improve the cost and operating costs, equipment maintenance and management is more complex.
Working principle: Relying on the forced action of the fan, the air passes through the coil, and the air in the room where the unit is continuously recirculated, so that the air passes through the cold water (hot water) coil and is cooled (heated) to keep the room temperature constant. Maintain an ambient temperature that you think is comfortable.

Fan coil.
The fan coil is the end device of the air conditioning system. The fan coil can generally adjust its fan speed (or adjust the amount of water passing through the coil through the bypass valve), thereby adjusting the cold/heat in the sending room and realizing the adjustment of the indoor temperature. The working process and principle of the air fan coil coil to adjust the indoor humidity are similar.
The fan coil secondary control temperature control system is TC-1 of a temperature controller and an electric valve VA-1. The function of the controller TC-1 is to detect the temperature in the room and compare it with the set temperature of the controller, and VA-1 the electric valve according to the comparison result. On and off control, so that the room temperature remains constant.
The TC-1 detects the indoor temperature and compares it with the set temperature. When the room needs cold or hot air, the controller opens the electric valve and the fan to supply cooling or heating to the room.
TC-1 some models when the indoor temperature is lower than 5 ℃, automatically start the fan, in order to prevent the coil frost crack (this function can be set).
The temperature controller of the independently operated fan coil has no network communication interface. The thermostat is installed in the air-conditioned room. The set temperature of the fan coil thermostat is generally adjustable in the range of 5 ℃ ~ 30 ℃. The "high, medium and low" three-speed switch on the thermostat is used to control the fan in the fan coil to run at three speeds of "high, medium and low.
When the air-conditioning system is working in summer mode, the air-conditioning water pipe supplies chilled water, and the thermostat selection switch should be set to the "COOL (cold) block. When the room temperature rises and exceeds the set point temperature, the thermostat contact is connected and the electric The valve is opened, the fan runs, and the fan coil cools the indoor air. When the room temperature drops under the action of cold air and is lower than the set temperature, the contact of the thermostat, the electric valve is closed, the fan stops running, and the fan coil stops cooling the indoor air, so that the reciprocating cycle keeps the room temperature within a certain range.
The cold/heat of the fan coil can be controlled by controlling the water volume of the coil, the airflow bypass, the fan speed or a combination of the three. The cold/heat control can be manual or automatic.
Shandong Xingheng Environmental Technology Group Co., Ltd. is located in Luquantun Development Zone, Dezhou, Shandong Province, the hometown of glass fiber reinforced plastic in China. The company has three-level qualification for construction mechanical and electrical installation engineering, three-level qualification for environmental protection engineering, and safety production license. It is the first in the industry to pass ISO9001 quality management system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health management system certification, an axial fan invention patent, a fan utility model patent, EIA, three at the same time waiting for complete procedures