ᤋ
ଋ
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Cleaning Unit
How to check Micro Mesh Stainless Filter installation
Keep the filter mesh facing up, and align the filter with
the top face of the indoor unit, and then slide and push
it in. (The shape of the left and right filters are the same.)
Slide the buckles of the filter mesh leftwards to lock
the filter mesh. (Each in both sides)
Verifying installation of the terminal block and the front panel
Verifying cleaning of the filter mesh
Check whether the terminal block
cover has been installed.
To close the front panel, press its right and left sides first and
then the center until it clicks into place.
front panel
Fixing screws
the terminal block
Before turning on the power of the air conditioner, make sure that the filters (2 pieces at the top and 2 pieces in
front) have been installed properly and locked.
Neck
Filter mesh buckle
ᦦܹ
Arm
Arm
Arm
Arm
Step
Step
CAUTION
Screw
Screw
Screw
storage
box
Screw
front panel
Screw cover
Terminal block cover
Terminal block cover
Screw
Screw
Screw
front panel
Screw cover
Terminal block cover
Terminal block cover
Install the storage box and the panel.
CAUTION
•
Before trial running of the air conditioner, be sure to check the following steps 1 and 2, and then operate it
in the cooling-heating room.
Front Panel
Wrench
Torque wrench
Flare nut
Half union
Female side
Male side
INSTALLATION OF REFRIGERATING PIPES AND AIR REMOVAL
1. Pipe Cutting and Flaring
•
Use a pipe cutter to cut the pipe and remove burr.
CAUTION
•
Remove burr
If burr is not removed, it may cause leakage.
• Point the side to be trimmed downwards during
trimming to prevent copper chips from entering the
pipe.
2. Pipe Connection
•
Remove the flare nut from the pipe of the indoor
spanner while holding down the half union (male
side) with a spanner.
•
Do not crush the pipe while bending it.
•
Apply refrigerant oil on the connection part. After
carrying out the center alignment and manual
tightening of the flare nut, tighten the flare nut
securely with a torque wrench (spanner).
Copper pipe
Trimming tool
•
Before flaring, please put on the flare nut.
Copper pipe
Die
A
Die
Please use exclusive tool for refrigerant R410A.
Outer Diameter
A (mm) Rigid Flaring Tool
(ø)
For R410A tool For R22 tool
6.35 (1/4
”
) 0~0.5 1.0
”
) 0~0.5 1.0
3. Remove of Air from the Pipe and Gas Leakage Inspection
CAUTION
•
When removing flare nut of the indoor unit, first remove the nut of small diameter side.
• Prevent water from entering into the piping when connecting.
• Be sure to tighten the flare nut to the sp
ecified torque with a torque wrench.
If the flare nut is overtightened, it may split after sometime and may cause refrigerant leak.
• When using a control valve, make sure that the packing is not deteriorated and avoid excessive tightening
of the handle. Otherwise, gas may leak from the service valve.
* Tightening torque must be as shown in the table below.
Outer diameter Torque N•m
)mc•fgk( )ø( epip fo
Small diameter side 6.35 (1/4
”
) 13.7~18.6 (140~190)
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)
Large diameter side 12.7 (1/2
”
) 29.4~34.3 (300~356)
Valve core cap 12.3~15.7 (125~160)
Valve
head
cap
From the viewpoint of global environment protection,
air purge type should be vacuum pump method.
1
• Remove the valve head cap
of the service valve.
• Remove the cap of valve
core and connect the charge
hose.
• Connect the vacuum pump
adapter to the vacuum pump
and connect the charge hose
to the adapter.
Valve head cap
for the service
valve at small
diameter side
Valve head
cap for the
service valve
at large
diameter side
Cap of valve core
• 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.
• Unscrew the spindle of both the
service valves in anticlockwise
direction to allow the flow of
refrigerant (unscrew halfway).
• Tighten the cap of valve head.
Check and make sure that there
is no gas leakage.
• Fully tighten the “Hi” shuttle of the manifold valve and
completely unscrew the “Lo” shuttle. Run the vacuum
pump. (Adapter is switched on)
•
Make sure the meter
reaches -0.1MPa
(-76cmHg) during pumping.
Closed
When pumping starts, slightly loosen
the flare nut to check if air sucked in.
Then tighten the flare nut.
Meter showing pressure
R410A Manifold valve
Vacuum pump
Ball valve
Vacuum pump adapter
Charge hose
Ball valve
Valve
Please leave the ball valve fully open
at all times.
3
4
2
Body of service valve
Hexagonal
wrench key
Cap of valve
head
Cap of valve
head
Cap of
valve core
FINAL STAGE
1. Heat Insulation and Finishing of Piping
CAUTION
•
Completely seal any gap with putty
High humidity air inside the wall or the outdoor may
go in to the room and could result in dripping of dew.
It could also cause smell or odor present outdoor and
inside the wall spreading into the room.
• Cover the pipe connection with the auxiliary insulation sheet,
wrap the tape without any gap.
• If there is gap or over-tightened, it may cause condensation.
• Please wrap the pipe and power cord together with vinyl
outdoor units on page 2.
• To enhance the heat insulation and to prevent water
condensation, please cover the outdoor part of the drain
hose and pipe with insulation sheet.
• When using an exit cover, do not attach a bush for pipe.
• When an exit cover is not used, seal the gap of the hole
on the wall, bush and pipe completely with putty. If an exit
cover is used, seal the gap of the hole on the wall and pipe
completely with putty. In the case of embedded piping,
sealing could cause entering of high humidity air into the
wall or indoor unit, which could result in dripping of dew. It
could also cause smell or odor present outdoor and inside
the wall spreading into the room.
Auxiliary
insulation sheet
Insulate
and wrap
with tape
Connecting cord
Refrigerating
pipe
Drain hose
Seal with putty
About 90mm
Putty
Putty
Bush for pipe
Do not cut the drain
hose in the middle
When using an exit
cover, do not attach a
bush for pipe.
2. Affixing the Remote Controller and Installing the Anti-mold Wasabi Cassette
Works to be done when transferring or removing air
conditioner
From the viewpoint of global environment protection,
refrigerant should be recovered (pumped down) when the
air conditioner is transferred or removed.
Perform force-cooling operation (refer to “Force-cooling
operation” on page 12) for about 5 minutes as a preliminary
operation.
Tighten the spindle of the service valve at small diameter
side in clockwise direction.
Continue the force-cooling operation for another 1-2
minutes, and then tighten the spindle of the service valve
at large diameter side in clockwise direction.
Stop the force-cooling operation.
CONNECTION OF POWER CORD
Procedures of Wiring
WARNING
Wiring of the Indoor Unit
Remove the front panel. (Refer to “Removing and
Attaching the Front Panel” on page 13)
Remove the terminal cover and screw, hold the upper
part when removing.
Remove the lower cover.
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. (Be sure to use R410A
detector.)
Detail of Cutting the Connecting Cord
Bring the connecting cord
from the rear surface to the
front surface through the
cable guide.
The connecting cord should
be fix with the terminal.
Tightening torque reference
value:
1.2~1.6N•m (12~16kgf•cm)
Excessive tightening may
damage the terminal.
Connect the connecting cord
and fix with cord band.
Hook onto the claw at the
lower part of the terminal
cover and fix with screw.
Screw
Terminal cover
Lower cover
Drain hose
Cable
guide
Refrigerating
pipe
Connecting
cord
3. Remove the Protection Sheet
• Remove the protection sheet on the display panel.
4. Operation Test
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.
Force-cooling operation
• When the temporary switch of the indoor unit is pressed for
more than 5 seconds, the force-cooling operation starts.
Use this mode when performing the failure diagnosis or
collecting refrigerant into the outdoor unit.
• Press the temporary switch again or use the remote controller
to stop the force-cooling operation once this operation is
completed.
Push the end of the right-side arm outward to release the tab.
Move the left-side arm outward to release the left tab,
and then pull the panel towards you.
Removing and Attaching the Front Panel
•
Be sure to hold the front panel with both hands to detach and attach it.
Please refer to the operation manual on how to open and close the front panel.
Attaching
Removing
Insert the shaft of the left arm along the step on the unit into the hole.
Securely insert the shaft of the right arm along the step on the
unit into the hole.
Make sure that the front panel is securely attached, and then close
the front panel.
REMOVING AND ATTACHING THE FRONT COVER
OPERATION CHECK
When the power of the air conditioner turns on, the “Filter Cleaning Operation” starts automatically.
The
CLEAN indicator is lit during the filter cleaning operation.
Filter Lock
• Make sure that the top filters have
been locked. Lock the filters if
they are not locked. (The filters
may come off during the operation
if they are not locked.)
Do not touch the cleaning unit during
the filter cleaning operation.
Doing so could result in injury or
failure of the appliance.
Unlike the coventional type of air conditioner, this air conditioner has no
grille at its top surface, It is because this air conditioner is equipped with the
cleaning unit, and to prevent the top surface from getting dirty easily.
• Filter cleaning operation check will take approximately 5 minutes for the cleaning unit to make one cycle of back and forth
movement. Make sure that the cleaning unit is actually working by a visual inspection from the top of the indoor unit.
How to remove the panel frame
Attaching the Front Cover
Make sure that the dew receiving pan and the cleaning unit
are securely attached.
After attaching the left and right sides of the front cover onto
the unit, ensure that the top tabs (2 places) have been fixed
on.
• Remove the front panel and check if the filter locks (2 pcs) are tripped or slant.
• If the filters are not inserted properly, refer to following “Installing the Micro Mesh Stainless Filters”.
• Please perform “Filter cleaning operation check” again after reinstalled the filters.
Installing the Micro Mesh Stainless Filters
MoveMove
Insert
Insert
Insert
Insert
When being installed or removed, the panel is likely to slide off.
When lifting to open the panel, do not apply too much force. Otherwise,
the panel may come off or malfunction may be caused.
Unscrew screws of the terminal block cover,
and remove the terminal block.
Remove the screw cover below the panel frame,
and unscrew the 7 screws from the panel frame.
Insert the screw driver into the hole on the right
upper part of the panel frame, and loosen the jaw.
Hold the panel frame and pull it along the direction
indicated by the arrow to remove it.
Remove the front panel and the storage box.
Tighten the 7 screws in the panel.
Install the screw cover.
Install the terminal block cover, and tighten the screws.
To verify cleaning of the
filter mesh, send wind
when upper and lower wind
boards are closed. The
cleaning indicator lights up.
After the cleaning action is
acknowledged, if the cleaning
diagnosis indicator blinks (4"
on/1" off), it indicates abnor-
mality in cleaning operation of
the filter mesh. In this case,
refer to the Operating
Instructions for a solution.
Cleaning indicator
After pumping for about 10-15 minutes, completely
loosen the “Lo” shuttle and switch off the vacuum
pump. (Adapter is switched off)
seal the gap of the pipe completely with putty. Incomplete
CLEAN indicator blinks.
• If the CLEAN
completion due to an abnormal condition.
In this case, refer to “Check the Operation of the Filter Cleaning Unit” and “Troubleshooting” of the operation manual and
take appropriate actions.
Fix on the top tabs (2 places)
Otherwise the nut of big diameter side will fly out.
• Close the front panel properly.
• If the “ON/OFF” button on the remote control is pressed during the operation check, the operation check is stopped
• If the filters are not installed properly, “Filter Cleaning Operation” is found abnormal and the
The filters may come off during operation if they are not installed properly.
before its completion. Wait until the operation check is completed without pressing any button on the remote controller.
tape as shown in the figure of the installation of indoor and
• The Timer lamp flashes when force-cooling is in operation.
unit by removing the flare nut (female side) with a
• If the supply cord is damaged, it must be replaced by a special cord (Maker’s service parts) available from the manufacturer
or its service agent.
• 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.
• Be sure to use only power cables approved form the authorities in your country. For example in Germany: Cable type: NYM
3×1.5mm . (Fuse = 25A time delay)
2
• Please refer to the manual for wire connection, the wiring technique should meet the standard of the electrical
installation.
• 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.
• There is a AC voltege of 220 V between the and terminals. Therefore, before servicing, be sure to remove the plug
12.7 (1/2
< 10030A : A >
indicator blinks during the “Filter Cleaning Operation” means that the operation is stopped before its
-230
from the AC outlet.
LN
RAK-18_25_35PSA_EN.indd 2 2013-2-28 15:56:17
Indoor Unit Outdoor Unit
On
Off
Display panel
s
For cable connection to control P.W.B., you need to
remove front cover and electrical box cover.
Each connecting location is as below.
s
Please check and confirm manuals attached to each
optional parts for more connection details.
s
You can refer to this installation manual how to remove
and re-attach the front cover.
s
Please be careful not to damage lead wires by edge of
plate when connecting the optional parts.
How to connect the optional parts
CN7
CN6
CN21
s Install the anti-mold wasabi cassette. (Refer to page of the Operation Manual)
Noise may occur if the anti-mold wasabi cassette is not installed properly.
AAnti-mold wasabi
ccassette
s
Procedures to fix the holder of remote control.
1.
Drill holes on wall.
(As shown below)
2.Push plug into the holes.
(As shown below)
Remote
Control
Holder
Plug (Procure locally)
Screw
20mm
ømm4.4
Wall
Installation Of Remote Controller
s
s
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 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.
The remote controller must be
slide in the remote controller
holder, in the direction as shown
in the figure, until it hooks at the
lower end of the remote controller
holder.
Screw (2 pieces)
Remote
Controller
Holder
Remote
Controller
160mm
10mm
100mm
1
2
3
70mm
10mm
10mm
45mm
1
2
3
Connecting cord
Strip
wires
Green +
Yellow
20mm
Strip
wires
Connecting cord
Green + Yellow
(ground)
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