The four-control air conditioner means that the air-conditioning box is equipped with a cold coil and a hot coil at the same time. Each set of coils is entered and returned once, for a total of four, so it is called four controls. The two sets of water pipes are connected to cold water and hot water respectively, that is, no matter when, the cooling and heating can be switched at any time. Micro Switch Valve,Oven Fire Safety Valve,Safety Double Outlet Valve,Switch Oven Gas Valve GUOLONG PRECISION VALVE CO.,LTD , https://www.glstovevalve.com
FP-WAIV four control fan coil:
The four-control air conditioner means that the air-conditioning box is equipped with a cold coil and a hot coil at the same time. Each set of coils is entered and returned once, for a total of four, so it is called four controls. The two sets of water pipes are connected to cold water and hot water respectively, that is, no matter when, the cooling and heating can be switched at any time in the year, and some rooms can be heated while others are cooled. Therefore, its standard is high and the cost is high.
In the two-regulated air-conditioning box, there is only one set of coils, one after the other, cold water in summer and hot water in winter. Such a system allows the entire area to be cooled or supplied only at the same time. Compared with the four regulations, it saves a set of water systems, so its standards are relatively low and the cost is low.
The advantage of the four control system is that 1 end equipment can be readily available at the hardware business network information center) http://news.chinawj.com.cn