Cu-3E18Lbe Cu-4E23Lbe - Panasonic CU-2E15LBE Service Manual

10.2. CU-3E18LBE CU-4E23LBE

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
Liquid - side
Gas - side
* In case of indoor is CS-E21***, CS-XE21***, then ø 12.7
t0.8 gas-pipe size must be used together with CZ-MA2P
(pipe size expander)
Outdoor Unit
Equivalent length
• 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 of each indoor unit (min. ~ max.)
Allowable total piping length of all indoor unit
Height difference between indoor and outdoor unit
Height difference between indoor unit
CU-3E18*** CU-4E23***
ø 6.35 t0.8 ø 6.35 t0.8
ø 9.52 t0.8
ø 9.52 t0.8
*(ø 12.7 t0.8)
CU-3E18*** CU-4E23***
30m 30m
Outdoor Unit
Outdoor unit located on upper side
Outdoor unit located otherwise
Outdoor unit located on upper side
Outdoor unit located otherwise
Allowable piping length
40
CU-3E18*** CU-4E23***
3 m ~ 25 m 3 m ~ 25 m
50 m or less 60 m or less
15 m or less 15 m or less
7.5 m or less 7.5 m or less
7.5 m or less 7.5 m or less
15 m or less 15 m or less