2 Unit Placement and Installation 
2.1 Outdoor Units 
2.1.1 Placement considerations 
Placement of outdoor units should take account of the following considerations: 
  Air conditioners should not be exposed to direct radiation from a high-temperature heat source. 
  Air conditioners should not be installed in positions where dust or dirt may affect heat exchangers. 
  Air conditioners should not be installed in locations where exposure to oil or to corrosive or harmful gases, such as 
acidic or alkaline gases, may occur. 
  Air conditioners should not be installed in locations where exposure to salinity may occur unless the anti-corrosion 
treatment  for high-salinity  areas  customization  option  has  been  added and  the  precautions  described  in  Part  3,  9 
“Installation in Areas of High Salinity” are taken. 
  Outdoor units should be installed in well-drained, well-ventilated positions that are as close as possible to the indoor 
units. 
 
2.1.2 Spacing 
Outdoor units must be spaced such that sufficient air may flow through each unit. Sufficient airflow across heat exchangers 
is  essential for  outdoor  units to  function  properly. Figures  3-2.1  to 3-2.6  show  spacing requirements  in  three  different 
scenarios.