¡El Hitachi Air Conditioner es de alta calidad!1. Two stage oil separation ¡El air conditioning compressor has the function of internal oil separation. At the same time, an oil separator is added to the exhaust circuit of the system to achieve two-stage oil separation. ¡El system has higher operating efficiency and more stable and reliable operation. 2. Fast refrigeration and heating, accurate temperature control ¡El DC frequency conversion control technology is adopted to quickly reach the set temperature during startup, and the room temperature can be controlled within ± 0.5 ℃ according to the load in the room. 3. Wide operating range When the outdoor environment is - 23 ℃, the outdoor unit can still start heating operation, which can meet the needs of heating in winter in northern cold regions. 4. Ultra-long refrigerant piping ¡El length of refrigerant piping between outdoor units and indoor units can reach 120 meters (the length of large economic piping can reach 75 meters), the length of large header pipe is 300 meters, and the large vertical height difference between indoor and outdoor units can reach 30 meters.1. Two stage oil separation ¡El air conditioning compressor has the function of internal oil separation. At the same time, an oil separator is added to the exhaust circuit of the system to achieve two-stage oil separation. ¡El system has higher operating efficiency and more stable and reliable operation. 2. Fast refrigeration and heating, accurate temperature control ¡El DC frequency conversion control technology is adopted to quickly reach the set temperature during startup, and the room temperature can be controlled within ± 0.5 ℃ according to the load in the room. 3. Wide operating range When the outdoor environment is - 23 ℃, the outdoor unit can still start heating operation, which can meet the needs of heating in winter in northern cold regions. 4. Ultra-long refrigerant piping ¡El length of refrigerant piping between outdoor units and indoor units can reach 120 meters (the length of large economic piping can reach 75 meters), the length of large header pipe is 300 meters, and the large vertical height difference between indoor and outdoor units can reach 30 meters.