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10. Installation Instruction
10.1 SELECT THE BEST LOCATION
10.1.1 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.
• Recommended installation height for outdoor unit
should be above the seasonal snow level.
Refrigerant piping size
Outdoor Unit CU-2S18***
Liquid - side ø1/4" thickness 1/32"
Gas - side ø3/8" thickness 1/32"
Outdoor Unit CU-2S18***
Min. total piping length for
additional gas
65.6 ft
• If total piping length of all indoor units exceeds the
minimum length listed above, additionally charge
with 0.2 oz of refrigerant (R410A) for each
additional feet of piping.
10.1.2 Outdoor Unit Installation
Diagram
• This illustration is for explanation purposes only.
* Note:
Respective indoor unit installation procedure shall
refer to instruction manual provided in the indoor
unit packaging.
Allowable piping length
Outdoor Unit CU-2S18***
Allowable piping length of each indoor unit (min. ~ max.) 9.8 ft ~ 82.0 ft
Allowable total piping length of all indoor unit 164.0 ft or less
Outdoor unit located on upper side
49.2 ft or less
Height difference between indoor and outdoor unit
Outdoor unit located otherwise
24.6 ft or less
Outdoor unit located on upper side
24.6 ft or less
Height difference between indoor unit
Outdoor unit located otherwise
49.2 ft or less
