Panasonic CU-4E27QBR - 10 Installation Instruction; Select the Best Location

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10. Installation Instruction
10.1 Select the Best Location
(For CU-4E23QBR only)
 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.
Refrigerant piping size
Outdoor Unit CU-4E23***
Liquid - side ø 6.35 t0.8
Gas - side ø 9.52 t0.8
Outdoor Unit CU-4E23***
Equivalent length 30 m
 If total piping length of all indoor units exceeds the
equivalent length listed aboved, additionally
charge with 20 g of refrigerant (R410A) for each
additional meter of piping.
Allowable piping length
Outdoor Unit CU-4E23***
Allowable piping length of each indoor unit (min. ~ max.) 3 m ~ 25 m
Allowable total piping length of all indoor unit 60 m or less
Outdoor unit located on upper side
a
15 m or less
Height difference between indoor and outdoor unit
Outdoor unit located otherwise
b
7.5 m or less
Outdoor unit located on upper side
c
7.5 m or less
Height difference between indoor unit
Outdoor unit located otherwise
d
15 m or less