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11. Installation
Instruction
11.1 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-3TZ52***
Liquid - side
ø 6.35 t0.8
Gas - side
ø 9.52 t0.8
Table A
MODEL
Maximum Total
Piping Length
for add. Gas
(m)
Additional
Refrigerant
(g/m)
Indoor
A
min
(m
2
)
1.8 m for
wall
mounted
2.5 m for
wall
mounted
CU-3TZ52*** 30
20 5.96
3.09
If total piping length of all indoor units exceed the
maximum total length listed above, additionally
charge with 20 g of refrigerant (R32) for each
additional meter of piping.
A
min
= (m
c
/ (2.5 x (LFL)
(5/4)
x h
0
)) ²
A
min
= Required minimum room area, in m
2
m
c
= Refrigerant charge amount in appliance, in kg
LFL
= Lower flammable limit (0.306 kg/m
3
)
h
0
= Installation height of the appliance
: (1.8 m for wall mounted is standard reference
installed height)
: (2.5 m for wall mounted is recommended
installed height give by manufacturer)
•
This illustration is for explanation purposes only.
3/8" Gas side piping ( )
1/4" Liquid side piping ( )
Additional drain hose ( )
Connecting cable ( )
Power supply cord ( )
Outdoor Unit Installation Diagram
Installation parts you
should purchase ( )
It is advisable to avoid
more than 2 blockage
directions. For better
ventilation & multiple-
outdoor installation,
please consult authorized
dealer/specialist.
* Note:
Respective indoor unit installation procedure shall refer to
instruction manual provided in the indoor unit packaging.
Allowable piping length
Outdoor Unit
CU-3TZ52***
Allowable piping length of each indoor unit (min. ~ max.)
3 m ~ 25 m
Allowable total piping length of all indoor unit
50 m or less
Height difference between indoor and
outdoor unit
Outdoor unit located on upper side
15 m or less
Outdoor unit located otherwise
7.5 m or less
Height difference between indoor unit
Outdoor unit located on upper side
7.5 m or less
Outdoor unit located otherwise
15 m or less
