The F type free cooling model through the air/fluorine coil (direct expansion refrigeration) or air/frozen water coil is used for indoor cooling. Water was cooled by the outdoor dryer. (1) When the outdoor temperature is higher than the ZET values, water through the water/Freon heat exchanger changes the heat. (2) When the outdoor temperature is lower than the ZET values, water was cooled by outdoor air through water/air coil for indoor cooling.
This chart is for reference only, the new design of components and structures for the unit will change depending on the actual situation.