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10. Installation Instruction 
(For CS/CU-S9/12/18/24PKV only) 
10.1  Select the Best Location 
10.1.1 Indoor Unit 
  Do not install the unit in excessive oil fume area 
such as kitchen, workshop and etc. 
  There should not be any heat source or steam 
near the unit. 
  There should not be any obstacles blocking the air 
circulation. 
  A place where air circulation in the room is good. 
  A place where drainage can be easily done. 
  A place where noise prevention is taken into 
consideration. 
  Do not install the unit near the door way. 
  Ensure the spaces indicated by arrows from the 
wall, ceiling, fence or other obstacles. 
  Recommended installation height for indoor unit 
shall be at least 2.5 m. 
10.1.2 Outdoor Unit 
  If an awning is built over the unit to prevent direct 
sunlight or rain, be careful that heat radiation from 
the condenser is not obstructed. 
  There should not be any animal or plant which 
could be affected by hot air discharged. 
  Keep the spaces indicated by arrows from wall, 
ceiling, fence or other obstacles. 
  Do not place any obstacles which may cause a 
short circuit of the discharged air. 
  If piping length is over the [piping length for 
additional gas], additional refrigerant should be 
added as shown in the table. 
 
Piping size 
Model 
Horse 
Power 
(HP) 
Gas Liquid 
Std. 
Length 
(m) 
Max. 
Elevation 
(m) 
Min. 
Piping 
Length 
(m)
Max. 
Piping 
Length 
(m) 
Additio
nal 
Refrig
erant 
(g/m) 
Piping
Length
for add.
gas 
(m) 
S9*** 1.0HP 
9.52 
mm 
(3/8") 
5 3 15 15 7.5 
S12*** 1.5HP 
7.5 
5 3 15 15 7.5 
S18*** 2.0HP 
12.7 
mm 
(1/2") 
15 3 20 15 10 
S24*** 2.5HP 
15.88 
mm 
(5/8") 
6.35
mm 
(1/4") 
5 
15 3 20 20 10 
 
Example: For S9*** 
If the unit is installed at 10 m distance, the quantity of 
additional refrigerant should be 50 g …. (10-7.5) m x 
20 g/m = 38 g. 
 
 
 
 
 
 
 
 
 
 
 
10.1.3  Indoor/Outdoor Unit Installation 
Diagram