17
10.3 Select the Best Location
10.3.1 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-2E18**
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)
Outdoor Unit
CU-2E18**
Min. total piping length for additional gas
65.6 ft (20 m)
If total piping length of all indoor units exceeds the
minimum length listed above, additionally charge
with 0.2 oz (20 g) of refrigerant (R410A) for each
additional feet (meter) of piping.
O
u
tdoor Unit Installation Diagram
Installation parts yo
u
sho
u
ld p
u
rchase ( )
It is advisa
b
le to avoid more
than 2
b
lockage directions.
For
b
etter ventilation &
m
u
ltiple-o
u
tdoor installation,
please cons
u
lt a
u
thorized
dealer/specialist.
3/8" (9.52 mm)
Gas side piping ( )
1/4" (6.35 mm)
Liq
u
id side piping ( )
Additional drain hose ( )
Connection ca
b
le ( )
(Cond
u
it)
Power s
u
pply cord ( )
(Cond
u
it)
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-2E18***
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 units
164.0 ft (50 m) or less
Height difference between indoor and outdoor units
Outdoor unit located on upper side
a
49.2 ft (15 m) or less
Outdoor unit located otherwise
b
24.6 ft (7.5 m) or less
Height difference between indoor units
Outdoor unit located on upper side
c
24.6 ft (7.5 m) or less
Outdoor unit located otherwise
d
49.2 ft (15 m) or less
O
u
tdoor
u
nit located
on
u
pper side
O
u
tdoor
u
nit located
otherwise
d
b
d
b
a
c
O
u
tdoor
u
nit
O
u
tdoor
u
nit
O
u
tdoor
u
nit
t
i
n
u
r
o
o
d
n
I
t
i
n
u
r
o
o
d
n
I
Indoor
u
nit