Data source: Beijing Carrier Air Conditioning Repair http://blog.tianya.cn/blogger/blog_main.asp?BlogID=3743677.
Fan coil air conditioners are terminal devices of the central air conditioning system, mainly consisting of a low-noise fan and a coil. The central air conditioning system provides cold (hot) sources, and the fresh air unit supplies fresh air, allowing indoor air to circulate on its own. Fan coil units come in various forms, divided into exposed and concealed installations, as well as upright, horizontal, or double-pipe, triple-pipe, quadruple-pipe classifications, selected based on different building conditions. General products include series such as horizontally concealed installation, horizontally upright installation, visibly installed upright, and horizontally ceiling-mounted.
Fan coil units can supply warm and cool air with suitable humidity to the room and continuously recirculate it, adjusting the air quality in the room.
The wind speed of the fan coil unit can be adjusted to three levels: high, medium, and low, to meet different user needs. Some products require configuration of cold and hot conversion switches, temperature controllers, and waterway control valves.
Carrier Air Conditioning Repair Q&A: How to adjust fan coil units