36
10.2 CU-4E24RBU
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-4E24***
Liquid - side
ø1/4" (ø6.35 mm) thickness 1/32" (t0.8 mm)
Gas - side
ø3/8" (ø9.52 mm) thickness 1/32" (t0.8 mm)
(ø1/2" (ø12.7 mm) thickness 1/32" (t0.8 mm))
* In the case of indoor unit is CS-E24***, a gas-
pipe of ø1/2" (ø12.7 mm) thickness 1/32"
(t0.8 mm) must be used together with CZ-MA2P
(pipe size expander)
Outdoor Unit
CU-4E24***
Min. total piping length for additional gas
147.6 ft (45 m)
If total piping length of all indoor units exceeds the
minimum length listed above, charge additionally
with 0.2 oz (20g) of refrigerant (R410A) for each
additional foot (meter) of piping.
10.2.1.1 Outdoor
Unit
Installation
Diagram
Allowable piping length
Outdoor Unit
CU-4E24***
Allowable piping length of each indoor unit (min. ~ max.)
9.8 ft ~ 82.0 ft (3 m ~ 25 m)
Allowable total piping length of all indoor unit
229.6 ft (70 m) or less
Height difference between indoor and outdoor unit
Outdoor unit located on upper side
g
49.2 ft (15 m) or less
Outdoor unit located otherwise
h
24.6 ft (7.5 m) or less
Outdoor unit located otherwise
k
49.2 ft (15 m) or less
Height difference between indoor unit
Outdoor unit located on upper side
i
24.6 ft (7.5 m) or less
Outdoor unit located otherwise
j
49.2 ft (15 m) or less
•
This illustration is for explanation purposes only.
3/8" Gas side piping ( )
1/4" Liquid side piping ( )
Additional drain hose ( )
Connection cable ( )
Power supply cord ( )
Installation parts you
should purchase ( )
* Note:
Respective indoor unit installation procedure shall refer to
instruction manual provided in the indoor unit packaging.
It is advisable to avoid
more than 2 blockage
directions. For better
ventilation & multiple-
outdoor installation,
please consult authorized
dealer/specialist.
j
k
j
h
g
i
Outdoor unit
Outdoor unit
Outdoor unit
t
i
n
u
r
o
o
d
n
I
t
i
n
u
r
o
o
d
n
I
Indoor unit
Outdoor unit located
on upper side
Outdoor unit located
otherwise
