A-
UNIT
1/2"
1/4"
3/8"
1/4"
3/8"
1/4"
3/8"
1/4"
1/2"
1/4"
3/8"
1/4"
3/8"
1/4"
1/2"
1/4"
A-
UNIT
B-
UNIT
C-
UNIT
Connecting the pipes
Connect the pipes for the indoor unit first and then
for the outdoor unit.
(1) Tighten the
flare
nuts by
hand
for the
first
3-4
turns.
(2) Use
a
wrench
and
torque wrench to tighten up
the pipes.
• Do not over tighten the pipes; it may be de
-
formed or damaged.
Notes:
•
Bend the pipes carefully as not to damage them.
•
Lay the drain hose below the pipes.
(
4) Flaring
Flare processing
dimensions(A)
(5) Checking
T
o be flared perfectly circula
r.
Flare nut not missing.
A
B
D
C
Connecting the drain hose
The unit discharged water from its drain port. Con
-
nect a commercial drain hose if drainage is neces
-
sar
y.
Flare nut
Connecting 7000/9000/12000 BTU/h-class indoor unit to
the port “A-UNIT”
Make sure to use the joint, flare nut and seal ring.
Installation dimension
Referring to the figure, firmly fas
-
ten the outdoor unit with bolts.
The flare coupling refrigerant pipes.
Flaring the pipe end
(1) Cutting with a pipe cutter
Cut at a right angle.
(2) Deburring
Allow no cuttings in the pipe.
(3) Putting in the flare nut
ACCESSORIES
ITEMS
Q’ty APPLICATION
ITEMS
Q’ty APPLICATION
ITEMS
Q’ty APPLICATION
1 Manual
1
Installation manual
3 Drain tray
1
To connect the
drain hose to the
outdoor unit.
5 Joint
1
To connect 3/8"
pipe to the port “A-
UNIT”
2 Cable fixing band
1
T
o bind the cables.
4 Drain joint
1
6 Seal Ring
1
7 Flare nut
(3/8
"
)
1
1 OUTDOOR UNIT INSTALLATION
2 CONNECTING THE REFRIGERANT PIPES
MULTI SPLIT TYPE ROOM AIR CONDITIONER
INSTALLATION MANUAL
ENGLISH
INSTALLATION DIAGRAM
1000
mm or more
400
mm or more
•
Install at least 2 indoor unit
s.
•
Provide as much installation
space as possible for efficient
air-conditioning.
For installation work
300
mm or more
300
mm or more
1.
Place the outdoor unit on a stable base.
2.
Provided sufficient space around the unit. It should also be well
ventilated.
3.
The unit should not be exposed to strong wind nor splashed
with rain wate
r.
4. W
ater drain from the unit should be let out without problem. Lay
a drain hose if required. In cold regions, installation of the drain
pipe is not
advisable as freezing could result.
5. Keep
TV set, radio and the like 1 m or more away from the unit
.
6. A
void locations exposed to machine oil vapo
r
, salty air (facing
the seashore, for example), hot spring vapor sulfur gas, etc. Such
location can cause breakdown.
7. A
void locations exposed to muddy water (along a road, for exam
-
ple) or where the unit can be tampered with.
8.
Select a location where the outgoing air or operating noise can
-
not annoy
others.
9. Keep the air outlet opening free of any obstacle.
This could a
ffect
the performance of the unit and create loud noises.
T
rap
This manual describes the installation of outdoor unit only
For the installation of the indoor unit, see the installation manual accompanying indoor unit.
B508
Carefully read and follow these instructions for
smooth and trouble-free installation.
90°
A
Outdoor unit
Indoor unit
AU-X3M24RV
37
9
557
Piping cover
SAFETY PRECAUTIONS
•
T
ighten the flare nut with a torque wrench according to the specifi
ed
method.
If the flare nut is tightened too hard, the flare nut may be broken after a long
time and cause refrigerant gas leakage.
•
When installing the unit
,
take care not to enter air substance other than
the specified refrigerant(R410A) in the refrigerant cycle.
Otherwise, it will cause burst and injury as a result of abnormal high pres
-
sure in the refrigerant cycle.
•
Be sure to connect the refrigerant pipe before running the compre
ssor
.
Otherwise, it will cause burst and injury as a result of abnormal high pres
-
sure in the refrigerant cycle.
•
Earth the unit.
Incomplete earth may cause electrical shock.
•
Install an earth leakage breaker to avoid electric shock in case of leak.
Use the current-activated, high-sensitivit
y
, high-speed type breaker with a
rated sensitivity current of below 30 m
A
and an operating time of below 0.1
second.
•
Arrange the drain hose to ensure smooth drainage.
Insufficient drainage may cause wetting of the room, furniture etc.
•
This room air conditioner uses refrigerant R410A.
Use the
pipe, flare nut and tools exclusively for R410A
.
PIPING
Fit the drain joint into the
drain tray and connect the
drain port.
Drain hose (Commercially available)
Inside diameter: ø16 mm
Drain port
Drain tray 3
Drain joint 4
NOTES ON LOCATIONS
Before inst
alla
tion
,
re
m
o
v
e the
p
a
cking p
a
d fro
m
the outdoor
unit.
Packing pad
T
ool
A
R410A
tool
0 - 0.5 mm
Conventional tool 1.0 - 1.5 mm
300
mm or more
Wrench
Torque wrench
•
Installation must be made in accordance with the installation
manual by
qualified service personnel.
Incorrect work will cause electric shock, water leak, fire.
•
Be sure to use the attached accessories parts and specified parts
for installation.
Use of other parts will cause electric shock, water leak, fire, the unit
falling.
•
The appliance shall be installed in accordance with national wir
-
ing regulations.
W
rong connection can cause overheating or fire.
•
After installation has complete, check that there is no leakage of
refrigerant gas.
If the refrigerant gas contact with fire, it may generate toxic gas.
•
V
entilate the room if refrigerant gas leaks during installation.
If the refrigerant gas contact with fire, it may generate toxic gas.
•
Use the specified electrical cable.
Make sure the cable is secured in place and that the terminals are free
of any excess force from the cable. Otherwise overheating or fire may
result.
•
Form the cable so that the control box cover
, the cord holder and
cable holder are not loose.
Otherwise overheating, fire or electric shock may result.
Coating tape
(Commercially available)
Max. piping
length:A
Max. total piping length of all
unit
Min. piping
length:A
Max. height di
f
ference:
B
C
D
25 m
50 m(2 units) / 60 m(3 units)
3 m
10 m 10 m 10 m
1.
Standard piping length is 5 m.
2.
When the outdoor unit is placed at a higher level than the indoor unit, provide a trap near the hose’s lead-in port.
Use the refrigerant pipes shown in the table below.
Pipe size
Pipe thickness
Thermal insulation
Liquid side
1/4" (ø 6.35 mm)
0.8 mm
Thickness: 6 mm or thicker
Material: Polyethylene foam
Gas side
3/8" (ø 9.52 mm)
1/2" (ø 12.7 mm)
•
The thermal insulation should cover both the gas and liquid pipes.
Flare nut tightening torque
Pipe size
Torque
Liquid side
1/4" (ø 6.35 mm) 16±2 N·m (1.6±0.2 kgf·m)
Gas side
3/8" (ø 9.52 mm) 38±4 N·m (3.8±0.4 kgf·m)
1/2" (ø 12.7 mm) 55 ± 5 N·m (5.5 ± 0.5 kgf·m)
*18000BTU/h
class
Note:
• Make sure the flare nuts of the outdoor unit are securely clo
sed for those not connected to the indoor unit.
Joint (1/2"
3/8") 5
6
g
n
ir
l
a
e
S
Flare nut (3/8") 7
*Make sure to connect 18000BTU/h-class indoor
unit to the port “A-UNIT”.
Outdoor unit
Indoor unit
A3AUX3M24RV.indd 1
