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10.2 CU-3E18PBE CU-4E23PBE
10.2.1 Select The Best Location
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-3E18*** CU-4E23***
Liquid - side ø 6.35 t0.8 ø 6.35 t0.8
Gas - side ø 9.52 t0.8
ø 9.52 t0.8
*(ø 12.7 t0.8)
* In case of indoor is CS-E21***, CS-XE21***,
CS-ME21***, then ø 12.7 t0.8 gas-pipe size
must be used together with CZ-MA2P (pipe size
expander)
Outdoor Unit CU-3E18*** CU-4E23***
Equivalent length 30 m 30 m
If total piping length of all indoor units exceed the
equivalent length listed above, additional charge
with 20g of refrigerant (R410A) for each additional
meter of piping.
Allowable piping length
Outdoor Unit CU-3E18*** CU-4E23***
Allowable piping length of each indoor unit (min. ~ max.) 3 m ~ 25 m 3 m ~ 25 m
Allowable total piping length of all indoor unit 50 m or less 60 m or less
Height difference between indoor and outdoor unit
Outdoor unit located on upper side
15 m or less 15 m or less
Outdoor unit located otherwise
7.5 m or less 7.5 m or less
Height difference between indoor unit
Outdoor unit located on upper side
7.5 m or less 7.5 m or less
Outdoor unit located otherwise
15 m or less 15 m or less
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