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• Please mount the Outdoor unit of stable ground to prevent vibration and increase
of noise level.
• Decide the location for piping after sorting out the different types of pipe available.
• When removing side cover, please pull the handle after undoing the hook by pulling
it downward. Reinstall the side cover in the reverse order of the removal.
Please remove side cover
Please face this side (suction
when connecting the piping
side) of the unit to the wall.
and connecting cord.
Pull downward
RAC-P25/35YHAB
Please face this side (suction side)
of the unit to the wall.
Please remove side cover
when connecting the piping
• Do not touch the suction
and connecting cord.
por t, bottom surface, or
aluminum fin of the outdoor
unit.
Failure to do so may cause
an injury.
RAC-P50YHAB
CONDENSED WATER DISPOSAL OF OUTDOOR UNIT
• There is holes on the base of Outdoor unit for condensed water to exhaust.
• In order to flow condensed water to the drain, the unit is installed on a stand or a
block so that the unit is 100mm above the ground as shown figure. Join the drain
pipe to one hole.
• After installation, check whether the drain pipe clings to the base firmly.
RAC-P50YHAB
RAC-P25/35YHAB
DRAIN HOLE
BASE
BASE
above
above
100mm
BUSH
Push
Push
100mm
DRAIN HOLE
7
BUSH
Outer diameter:
6 DRAIN PIPE
DRAIN HOLE
16 mm or more
6
DRAIN PIPE
• Install the outdoor unit horizontally and make sure that condensate drains away.
• In case of using in chilly area
Especially, in case that there are many snows by very cold in chilly area, condensed
water freezes on the base and may result not to drain. In this case, please remove
the bush and the drain pipe at the bottom of unit. (Left and center near discharge
portion of air, each 1 place). It becomes smooth drain.
Ensure that the distance from the drain hole to the ground is 250 mm or more.
• THIS APPLIANCE MUST BE
WARNING
EARTHED.
Procedures of Wiring
Indoor Unit
Outdoor Unit
1 2 3
L N
1 2 3
Connecting Cord
Detail of Cutting the Connecting Cord
Indoor Unit
Outdoor Unit
70mm
Green + Yellow
160mm
10mm
(ground)
10mm
Strip
1
wires
2
Strip
3
wires
10mm
Green +
Connecting cord
Yellow
45mm
WARNING
• The naked part of the wire core should be 10mm fix it to the terminal tightly. Then
try to pull the individual wire to check if the contact is tight. Improper insertion may
burn the terminal.
• Be sure to use only wire specified for the use of air-conditioner.
• Please refer to the manual for wire connection and the wiring technique should
meet the standard of the electrical installation.
• There is an AC voltage drop between the LN terminal if the power is on. Therefore,
be sure to remove the plug from its socket.
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.
1
Power Source And Operation Test
Power Source
WARNING
Never remodel the power plug nor extend the long-distance
cord.
Keep additional length for the power cord and do not render
the plug under external force as this may cause poor contact.
Do not fix the power cord with U-shape nail.
The power cable easily generates heat. Do not bring the
cable together with a wire or vinyl tie.
Operation test
Please ensure that the air conditioner is in normal operating
condition during the operation test.
Explain to your customer about the proper operation procedures
as described in the operation manual.
If the indoor unit won't operate, check the cable for correct
connection.
2
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.
CAUTION
1
Preparation of Pipe
• Use a pipe cutter to cut the copper pipe and remove burr.
• Remove burr and jagged edge will cause leakage.
• Point the side to be trimmed downwards during trimming to prevent copper
chips from entering the pipe.
• Before flaring, please put on the flare nut.
CAUTION
Die
Outer
Diameter (Ø)
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
2
Pipe Connection
• In case of removing flare nut of a indoor unit, first remove
CAUTION
• Be sure to tighten the flare nut to the specified torque with
• 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.
Outer diam
16 mm or
Flare nut
Wrench
Torque
wrench
Wiring of The Indoor Unit
• For wire connection of the Indoor unit, you need to remove the front cover, the low cover
under the body of the unit and terminal cover.
• Remove the cover from the terminal base and screw the cable.
AC 220-240V
Connecting cord
1
2
After remove the screw
3
and terminal cover, and
put the connecting cords
and fix the terminal cover
20mm
Connecting cord
with screw.
100mm
Method to remove the low cover
•
Pull at the
1
and
2
in
the directions as shown
by arrows to remove the
cover.
•
When the fuse (F5 or F6) has been blown out by the improper connection of
power cable, it can be restored by the attached reserve fuse.
Please exchange the blown-out fuse after making sure the right connection.
The remote controller
Remote
must be slide in
Controller
the remote controller
holder, in the direction
as shown in the figure,
until it hooks at the
Remote
lower end of the remote
Controller
Holder
controller holder.
Screw (2 pieces)
Force-cooling operation
• When the service switch of the outdoor unit is pressed for 1
or more seconds, the force-cooling operation starts. Use this
mode when performing the failure diagnosis or collecting
refrigerant into the outdoor unit.
RAC-P25/35YHAB
Screw
Temporary switch
(Force-cooling operation starts when
RAC-P50YHAB
the sw
itch is pressed for more than 5
seconds. Press the sw
itch again and
Screw
use
the remote controller to stop the
o
p
r e
t a
ion.
)
• Do not operate the unit for more than 5 minutes
while the spindle of the service valve is closed.
Trimming tool
Copper pipe
CAUTION
Die
A
• Please use
exclusive tool for
refrigerant R32.
Copper pipe
A (mm) Rigid Flaring Tool
For R32 tool
For R22 tool
0 - 0.5
1.0
0 - 0.5
1.0
0 - 0.5
1.0
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.
a torque wrench.
If the flare nut is overtightened, the nut may be split after a
long period has passed, and may cause a refrigerant leak.
Outer diameter
Torque N·m
(kgf·cm)
of pipe (ø)
Small diameter side
6.35 (1/4")
13.7 – 18.6 (140 – 190)
9.52 (3/8")
34.3 – 44.1 (350 – 450)
Large diameter side
12.7 (1/2")
44.1 – 53.9 (450 – 550)
Small diameter side
6.35 (1/4")
19.6 – 24.5 (200 – 250)
Valve head
9.52 (3/8")
19.6 – 24.5 (200 – 250)
cap
Large diameter side
12.7 (1/2")
29.4 – 34.3 (300 – 350)
Valve core cap
12.3 – 15.7 (125 – 160)
WIFI module
Cable guide
Connecting
Earth
cord
Cord band
WARNING
How to remove the Front cover
Open the Front panel with both hands.
1
Slide
Arm shaft
Push the end of the right-side arm outward to
2
1
release the shaft.
Move the left-side arm outwards to release the
2
left arm, and then pull the panel toward you.
Remove the seven screws and the terminal cover
3
screw Using a screw driver open the lock on
the left side as shown in below figure
Then pull the front cover towards you and release.
4
TERMINAL
SCREW
COVER
SCREW
SCREW
TERMINAL
Service switch (If the switch is
REMOVE CAP
COVER
FRONT
THEN OPEN SCREW
COVER
pressed for one or more seconds
the force-cooling operation starts.
if the sw
itch is pressed again, the
operation stop.)
Push up the [PUSH] sections at the bottom of the indoor unit and
pull the bottom plate towards you. Then the claws are released
from the stationary plate.
(The [PUSH] sections are indicated by 2 arrows in the right figure)
3
Remove of Air From The Pipe And Gas Leakage Inspection
Procedures of using Vacuum Pump for Air Removal
As shown in right figure, remove the cap
of valve core. Then, connect the charge
hose. Remove the cap of valve head.
1
Connect the vacuum pump adapter to the
vacuum pump and connect the charge
hose to the adapter.
Fully tighter the "Hi" shuttle of the manifold
valve and completely unscrew the "Lo"
shuttle. Run the vacuum pump for about
10-15 minutes, then completely tighten the
"Lo" shuttle and switch off the vacuum
pump.
2
Valve
• Loosen the spindle of the service valve
with small diameter by 1/4 turn and
tighten the spindle immediately after 5
to 6 seconds.
• Remove the charging hose from the
service valve.
Completely unscrew the spindle of the
service valve (at 2 places) in anticlockwise
3
direction to allow the flow of refrigerant
(using Hexagonal Wrench key).
Tighten the cap of valve head. Check the
4
cap's periphery if there is any gas leakage.
The task is then completed.
The body of service
valve
Cap of
valve core
Cap of valve
Cap of valve
head
head
Hexagonal wrench Key
Gas leakage inspection
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.
Wiring of the Outdoor Unit
• Please remove the side cover for wire connection.
• If you cannot attach the side plate due to the connection cord, please
press the connecting cord in the direction to the front panel to fix it.
• Be sure that the hooks of the side cover fixed in certainly. Otherwise water
WARNING
leakage may occur and this causes short circuit or faults.
• The connecting cord should not touch to service valve and pipes. (it
becomes high temperature in heating operation.)
Checking for the electric source and the voltage range
• Before installation, the power source must be checked and necessary wiring work must
be completed. To make the wiring capacity proper, use the wire gauge list below for the
wiring from house distribution fuse box to the outdoor unit in consideration of the blocked
rotor current.
IMPORTANT
Wire length
Wire cross-section
up to 6m
1.
5mm
2
up to 15m
2.5mm
2
up to 20m
4.0mm
2
RAC-P25/35YHAB
RAC-P50YHAB
L N 1 2 3
cover
• Investigate the power supply capacity and other
electrical conditions at the installing location.
IMPORTANT
Depending on the model of room air conditioner to be
installed, request the customer to make arrangements
RAC-P25/35YHAB
for the necessary electrical work etc.
The electrical work includes the wiring work up the
RAC-P50YHAB
outdoor unit. In localities where electrical conditions
are poor, use of a voltage regulation is recommended.
• Install outdoor for the room air conditioner within the
reaching range of the line cord.
How to Attach the Front Cover
1
Check that the drain pan is securely attached.
After installing the front cover onto the unit, hook 2 claws
2
at upper side of the cover securely. Then, push the center of
Push
the front cover to lock the claws.
Tighten the five screws.
3
Arm shaft
Claws
PULL OUT
OPEN LOCK USING
TERMINAL COVER
SCREW DRIVER
HOW TO REMOVE INDOOR UNIT
[Push] mark positions
When the meter reaches - 101KPa
(-76cmHg) during pumping fully
tighten the shuttle.
Meter showing
pressure
Closed
R32
Charge
Manifold
hose
valve
Vacuum
pump
Valve
Vacuum
pump
adapter
When pumping starts, slightly
loosen the flare nut to check of
air sucked in. Then tighten the
flare nut.
L N 1 2 3
cover
Fuse Capacity
1 A time delay fuse
5
25A time delay fuse
2021.12(Version1)
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