Firstly, it is necessary to define the position of the evaporator and condenser units. This should be done considering ease of access, good air distribution, physical structure of the building and drain position. Once the internal and external units are installed, the interconnecting fluid line must be installed. Dehydration of the line to avoid the presence of moisture is essential. Depending on the distance between the units, it is necessary to charge the refrigerant. To determine if the fluid load is appropriate, simply measure the degree of overheating.