Air-cooled scroll chiller (heat pump) unit is a central air-conditioning unit that takes air as the cold and heat source and water as the secondary refrigerant. It can form a centralized air conditioning system with various terminal devices such as fan coil units and air handling units. The air-cooled scroll chiller (heat pump) unit adopts internationally renowned brand refrigeration components and control components, combined with an advanced intelligent control scheme. After long-term stable operation verification, it has the characteristics of high efficiency, energy saving, green environmental protection, stability and reliability. It has various specifications and complete functions, can realize the joint control of 8 units, and can be connected with the building control system (BAS), easily meeting the air conditioning needs of different occasions.