31
10. Installation Instruction
10.1 CU-3E19RBU
10.1.1 Select The Best Location
If an awning is built over the unit to prevent direct
sunli
ght or rain, be careful that heat radiat
ion from
the con
denser is not obstructed.
There should not be any animal or plant which
coul
d 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
sho
rt circuit of the discharged air.
Recommended installation height for outdoor un
it
sho
uld be above the seasonal snow
level.
Refrigerant piping size
Outdoor Unit CU-3E19**
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-3E19**
Min. total piping length for additional gas 98.4 ft (30 m)
If total piping length of all indoor units exceeds the
minimum len
gth listed above, additionally charge
with 0.2 oz (20g) of refrigerant (R410A) for ea
ch
addition
al feet (meter) of piping.
10.1.1.1 Outdoor Unit Installation
Diagram
Allowable piping length
Outdoor Unit CU-3E19***
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 164.0 ft (50 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
Installation parts you
should purchase (Ú)
•
This illustration is for explanation purposes only.
* 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.
3
/8"(9.52mm)
Gas side piping (Ú)
1
/4" (6.35 mm)
Liquidsidepiping(Ú)
Additional drain hose (Ú)
Connection cable (Ú)
(Conduit)
Power supply cord (Ú)
(Conduit)
Outdoor unit located
on upper side
Outdoor unit located
otherwise
j
k
j
h
g
i
Outdoor unit
Outdoor unit
Outdoor unit
tinuroodnItinuroodnI
Indoor unit
(28 pages)
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