"24V DC Cooling Fan" coil selection is the key issue. Press the largest selection of air-conditioned room cooling load of fan coil air conditioning system design is common practice, its purpose is to ensure that the peak load of the room temperature. And in fact, air-conditioned room to run most of the time would not be in peak load, so that "24V DC Cooling Fan" excess cooling capacity, and switching to low-grade run to reduce the cooling output, in order to maintain the heat balance of the room. Select the fan coil units, in addition to cooling capacity to meet the requirements of the cooling load calculation, but also required to meet its match sensible heat and latent heat of the room to meet the requirements of heat and moisture ratio; "24V DC Cooling Fan" air volume required to meet the supply air temperature, the number of ventilators and air distribution and other requirements.