Vertical concealed fan coil unit is a type of fan coil unit. The structural forms of Haichuang fan coil unit include vertical exposed installation, vertical concealed installation, horizontal exposed installation, horizontal concealed installation, column exposed installation, column concealed installation, and ceiling type. The basic components of a fan coil unit include the box, fan, motor, coil, air filter, etc.

The supporting components include a room temperature regulator, a fan speed change switch, an electric three-way control valve and a two-way control valve, a water filter, and flexible joints. The unit casing is made of lightweight steel frame and thin steel plate. The suction and outlet grilles are fixed or adjustable, and the enclosure panel is detachable, which is cheaper than equipment maintenance. The appearance of the exposed unit casing is beautiful. The fan adopts a through flow fan. The motor adopts a single-phase capacitor speed regulation low-noise motor, with high, medium, and low speeds to change the air volume of the fan. Coils are often made of copper tubes and aluminum string pieces. Air filters are used to filter the return air and are generally drawer type.

A room temperature regulator, also known as a thermostat, changes the supply air temperature of the fan coil unit to achieve automatic temperature adjustment in air-conditioned rooms.

The fan coil units and equipment used should have a factory certificate of conformity or quality appraisal documents. The structural type, installation type, outlet direction, and inlet position of the fan coil unit should meet the design and installation requirements. The specifications and models of the main and auxiliary materials used for equipment installation should comply with the design regulations and have a factory certificate of conformity.

The Haichuang fan coil unit and main and auxiliary materials have arrived at the site, and the necessary tools for installation are ready. There is also a site, water source, and power supply for pre installation testing.

The construction of the building structure is completed, the waterproof layer on the roof is completed, and the indoor walls and floors are plastered. The installation position and size meet the design requirements. After the installation of the air conditioning system main pipe, the reserved pipe opening elevation of the branch pipe connected to the fan coil unit meets the requirements.