Floor
ø4.8mm
32mm
5. Connection of the connecting cord
(1) Remove the cover of the electric box.
(2) Connect the connecting cords.
(3) Assemble the cover of electric box.
3. Fixing the indoor unit
438
440
155
55
ø9 rear fixing
hole for
anchor bolt or
screw of
accessory.
Fixing on the wall
Case
Fixing the base of indoor unit
Fix the base of indoor unit on the floor with 4.1
×
32mm screws. (Right and left)
2. Push plug into the holes.
1. Drill holes on floor.
(The plug can be secured diagonally with a screw as shown above.)
WARNING
Be sure to attach screw to prevent
the indoor unit from overturn.
3
When fixing the indoor unit above
the ground, be sure to fix an L-angle
at the bottom to support it.
Screw (4.1x32)
Indoor unit
Plug (Procure locally)
If outlet is covered with the lattice door, room temperature may not be controlled
properly. Therefore, air outlet must be open as much as possible.
If air deflector of air outlet is adjusted too much upward, room temperature may
not be controlled properly due to the heat inside the lattice door. Therefore, the
deflector must be adjusted to nearly horizontal angle.
If signal receiver is covered with the lattice door, signal receiving distance or
range (angle) becomes smaller. Therefore, signal receiver must not be covered
with the lattice door.
Only the vertical lattice door may be used. Be sure to use a lattice door with an
open area ratio of 75% or more. If another lattice door or one with an open area
ratio of less than 75% is used, maximum performance may not be obtained.
With a built-in installation, it may take more time to reach the set temperature
after the unit is switched on.
WARNING
Leave some space in the connecting cord for
maintenance purpose and be sure to secure it
with the cord band.
Secure the connecting cord
along the coated part of the
wire using the cord band. Do
not exert pressure on the wire
as this may cause overheating
or fire.
Please ensure the smooth flow of condensed water of the Indoor unit during installation.
(Carelessness may result in water leakage.)
CAUTION
WARNING
Be sure that the hose is not loosely
connected or bent.
6. Checking of drawing drain hose
(1) Connect the separate drain hose to the drain hose that is attached to the indoor unit.
(2) For keeping the smooth flowing of condensed water the drain hose should be inclined as shown in figure below.
7. Installation of remote controller
The remote controller can be placed in its holder which is
fixed on wall or beam.
To operate the remote controller at its holder, please ensure
that the unit can receive signal transmitted from the controller
at the place where the holder is to be fixed. The unit will beep
when signal is received from the remote controller. The signal
transmission is weaken by the fluorescent light. Therefore,
during the installation of the remote control holder, please
switch on the light, even during day time, to determine the
mounting location of the holder.
8. Final stage of installation
8.1
Insulation and maintenance of pipe connection
The connected terminals should be completed sealed with heat insulator and then tied
up with rubber strap.
Please tie the pipe and power line together with vinyl tape as shown in the figure showing
the installation of Indoor and Outdoor units. Then fix their position with holders.
To enhance the heat insulation and to prevent water condensation, please cover the
outdoor part of the drain hose and pipe with insulation pipe.
Completely seal any gap with putty.
8.2
Operation test
Please ensure that the air conditioner is in normal operating condition during the operation test.
Explain to your customer the proper operation procedures as described in the user’s manual.
If the indoor unit does not operate, check to see that the connections are correct.
Sleeve of
protection pipe
Putty
Putty
OUTSIDE INSIDE
Horizontal air deflector (Air intake)
Signal receiver
Above
100mm
Above 200mm
Above 150mm
Lattice door
Screw
Screw
Screw (4.1x32)
Horizontal air deflector (Air outlet)
3-3 Built-in Installation
Direct Mounting On The Wall
Procedures of Installation and Precautions
Procedures to fix the hanger and indoor unit.
1.Drill holes on wall.
(As shown below)
2.Push plug into the holes.
(As shown below)
3.Fix the hanger on wall with 4.1 X
32 and 4.0 X 34 screw.
(As shown in figure below)
Wall
m
m8.
4
ø
32mm
Wall
Plug
Hanger
Screw
(4.1x32)
4. Installation of refrigerating pipes and air removal
4.1
Preparation of pipe
Use a pipe cutter to cut the copper pipe.
fore flaring, please put on the flare nut.
Trimming tool
Copper
CAUTION
Jagged edge will cause leakage.
Point the side to be trimmed downwards during trimming to
prevent copper chips from entering the pipe.
Outer Diameter (ø)
A (mm) Rigid Flaring Tool
For R410A tool
For R22 tool
6.35 (1/4")
0 – 0.5
1.0
9.52 (3/8")
0 – 0.5
1.0
12.7 (1/2")
0 – 0.5
1.0
4.2
Pipe connection
Please be careful when bending the copper pipe.
Screw in manually while adjusting the center. After that,
use a torque wrench to tighten the connection.
In case of removing flare nut of a indoor unit, first remove a nut of small diameter side, or a seal cap of
big diameter side will fly out. Free from water into the piping when working.
CAUTION
Outer diameter
Torque N·m
of pipe (ø)
(kgf·cm)
Small diameter side
6.35 (1/4")
13.7 – 18.6 (140 – 190)
Large diameter side
9.52 (3/8")
34.3 – 44.1 (350 – 450)
12.7 (1/2")
44.1 – 53.9 (450 – 550)
Valve head
Small diameter side
6.35 (1/4")
19.6 – 24.5 (200 – 250)
Large diameter side
9.52 (3/8")
19.6 – 24.5 (200 – 250)
cap
12.7 (1/2")
29.4 – 34.3 (300 – 350)
)
0
6
1
–
5
2
1
(
7
.
5
1
–
3
.
2
1
p
a
c
e
r
o
c
e
v
l
a
V
Trial run should be conducted on one unit at a time to check for incorrect wiring of connecting cord.
CAUTION
Screw
(4.1x32)
Fixing on the hanger
3.2 Wall Installation
3.1 Floor Installation
30mm
Air conditioner
External dimension of
indoor unit
20mm
750mm
m
m0
5
m
m0
74
55mm
Drain Hose
20mm
CAUTION
The draining of the water container
inside the Indoor unit can be done
from the left. Therefore the hanger
must be fixed horizontally or slightly
tilted towards the side of drain hose.
Otherwise, condensed water may
overflow the water container.
A
Die
Please use exclusive tool.
Copper pipe
Die
Connection of the connecting cord
Securely screw in the connecting cord so that it will not get loose or
disconnect.
Tightening torque reference value: 1.2 to 1.6 N·m (12 to 16 kgf·cm)
Excessive tightening may damage the interior of the cord requiring
replacement.
THIS APPLIANCE MUST BE
EARTHED.
WARNING
Bending
upwards
Bad
Condensed
water pond
Bad
Bad
Condensed
water pond
Bad
Ditch
Remote Controller
Holder
Screw (2 pieces)
Remote Controller
Using the claws at the top of front cover to remove and install front cover to the cabinet. Too much force on the
claws may cause breakage when removing or installing the front cover. Please follow the below procedures for
removal and installation of front cover.
CAUTION
Removal and installation of front cover
Push the latch at both sides to open the front panel. Pull out the filter and remove 3 screws.
Lift up the front panel and latch the claws
firmly at the lower part of rear of the front
panel.
Then remove 3 screws.
Take off 2 screw caps at the lower part of
the horizontal air deflector and remove 2
screws. Then leave the upper louver in
open position.
Set the upper louver in open position.
Insert the front cover fixing claws
(4 places) to the insertion groove of the
cabinet and put the upper louver through
to the front cover frame.
Put the horizontal air deflector to the
lower part of front cover frame and insert
to the cabinet.
After fixed the front cover, fix back all the
screws in order.
Hold both sides of the lower part of front
cover and pull down towards an oblique
direction.
2. Install the front cover
1. Remove the front cover
Latch
Latch
Screw
Screw
Screw
Screw Cap
Upper Louver
Upper Louver
Horizontal
Air Deflector
Horizontal
Air Deflector
Lower Flame
Front Panel
Front Panel
Front Cover
Front Cover
Front Cover Fixing Claws (4 places)
Front Cover
Fixing Claws
(4 places)
Claw
Cabinet
Cabinet
Cabinet
How to connect the optional parts
(H-LINK RAC Adapter, Dry contact, Wired Remote Controller)
For cable connection to control P.W.B., you need to remove front cover and electrical box cover.
Each connecting location is as below.
Dry contact: CN6
H-LINK RAC Adapter: CN7
Wired Remote Controller: CN20
Please check and confirm manuals attached to each optional parts for more connection details.
You can refer to this installation manual how to remove and re-attach the front cover.
Please be careful not to damage lead wires by edge of plate when connecting the optional parts.
Flare nut
Wrench
Torque wrench
Please use gas leakage detector to check
if leakage occurs at connection of flare nut
as shown on the right.
If gas leakage
occurs, further
tighten
the
connection to stop
leakage. (Use the
detector provided
for R410A.)
Gas leakage inspection
ss
el r
o
m
m4
81
Please remove 3 screws and clip
which fix the stand and cabinet.
(As shown in the figure below)
Please remove the screws which fix
the cabinet and hanger.
Please use hidden beams in the wall
to hold the hanger.
Hole for pipe
Hanger
Mark
Level
Line
Weight
Screw for Hanger
Please use more
than 6 screws
Screw
(4.1x32)
1. Drill holes on wall.
(As shown below)
2. Push plug into the holes.
(As shown below)
Wall
m
m8.
4
ø
32mm
Wall
Cabinet
Screw
(4.1x32)
Screw (4.1x32)
Screw
(4.1x32)
Screw
(4.1x32)
Screw
(4.1x32)
4.Fix the indoor unit on the
wall with 4.1x32 screw.
Plug
Screw
(4.0x34)
Screw
(4.0x34)
3
3
3
9
3
3
3
9
3
1
3
3
2
1
2
3
3
4
1
2
3
5
4
3
2
1
3
< S904 : >
B
The remote controller
must be slide in the remote
controller holder, in the
direction as shown in the
lower end of the remote
figure, until it hooks at the
controller holder.
RAF-25RXB_EN
Detail of cutting the connecting cord
35mm
10mm
10mm
70mm
1
2
3
Connecting cord
Green + Yellow
(ground)
Connecting cord
1
2
3
Cord band
Earth
Connecting cord
CN20
CN7
CN6
