2) Outdoor Unit:
Here are some points to consider when deciding the location of the outdoor unit:
a) The outdoor unit should be located in the open space preferably on the terrace so that the air can flow freely over the compressor and the condenser. If the terrace is not available it can be kept on the awning above the wall or it can be hanged on the external wall supported by the angles.
b) The location of outdoor unit should be such that it is easily accessible for carrying out the maintenance works of the compressor, condenser, and other devices. The installation and gas charging also should be convenient.
c) There should not be any hindrances in front of the outdoor that would block the passage of fan air from passing to the open space. Any blockages will seriously affect the performance of the AC and can also lead to the burning of hermetically sealed compressor coil.
d) The surface on which the outdoor unit is to be installed should be rigid enough to avoid its vibration. The vibration of the outdoor unit will raise excessive noise and also lead to the breaking of the copper tubing and leakage of the refrigerant.
It is always advisable to keep the outdoor unit at the height above the indoor unit. If the outdoor unit is kept at level below the indoor, some of the compressor power is used in pumping the refrigerant against the gravity, thus reducing the overall performance of the compressor. Most of the outdoor units are quite silent so one does not have to worry about their noise. The internal parts of the outdoor unit are shielded against the rain and sun rays, so one can rest assured about their safety in different climatic conditions.
The refrigerant at very low temperature flows inside the tubing between indoor and the outdoor unit, and there is always some loss of refrigerant effect to the atmosphere from these tubing, hence the distance between the indoor and the outdoor unit should be kept as minimum as possible to reduce the loss of the cooling effect. The maximum distance between the indoor and the outdoor units can be about 15 meters.