Fix to side bar and lintel a mounting bar, Which is separately sold, and then fasten the plate to the fixed mounting bar.
Make a hole of 60 mm in diameter, slightly descending to outside the wall. 
Install piping hole cover and seal it off with putty after installation
Draw pipes and the drain hose, then fasten them with the adhesive tape
In case of left side piping, cut away, with a nipper, the lid for left piping.
In case of 
HSU-18LEA13(T3) specifications
The Haier HSU-18LEA13(T3) is a versatile and efficient air conditioning unit that excels in providing optimal indoor comfort. Engineered for residential and light commercial applications, this model combines modern design with advanced technology to deliver superior cooling and heating performance.One of the standout features of the HSU-18LEA13(T3) is its outstanding energy efficiency. With a high energy efficiency rating (EER), this AC unit is designed to minimize electricity consumption while maximizing airflow. It employs an inverter technology that allows the compressor to adjust its speed based on the temperature requirements of the room, ensuring a steady and comfortable environment while reducing energy costs.
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In conclusion, the Haier HSU-18LEA13(T3) sets a high standard with its combination of energy efficiency, advanced technology, and user-friendly features. Whether for personal comfort or climate control in small commercial spaces, this air conditioning unit represents a reliable solution that adapts to the needs of its users while maintaining low operational costs and a commitment to sustainability.