Hitachi RAK-50PED, RAK-50PEDC, RAK-35PED, RAK-25PEDC, RAK-25PED User Manual
...
1
EN
FOR
SERVICE
PERSONNEL ONLY
THE CHOICE OF MOUNTING SITE (Please note the following matters and obtain permission from customer before installation.)
WARNING
The unit should be mounted at stable, non-vibratory location
which can provide full support to the unit.
The Outdoor unit must be mounted at a location which can
support heavy weight. Otherwise, noise and vibration will
WARNING
increase.
R410A R32)
RAK-25PEDC/RAC-25WED
RAK-35PEDC/RAC-35WED
RAK-50PEDC/RAC-50WED
R32
RAK-18PED/RAC-18WED
RAK-25PED/RAC-25WED
RAK-35PED/RAC-35WED
RAK-50PED/RAC-50WED
SAFETY PRECAUTION
This appliance is filled with R32.
Read the safety precautions carefully before operating the unit.
The contents of this section are vital to ensure safety. Please pay special attention to the following sign.
WARNING .......... Incorrect methods of installation may cause death or serious injury.
CAUTION .......... Improper installation may result in serious consequence.
Make sure to connect earth line.
This sign in the figures indicates prohibition.
Be sure that the unit operates in proper condition after installation. Explain to customer the proper operation and maintenance of
the unit as described in the user' s guide. Ask a customer to keep this installation manual together with the instruction manual.
WARNING
Please request your sales agent or qualified technician to install your unit. Water leakage, short circuit or fire may occur if you do the
installation work yourself.
Please observe the installation stated in the installation manual during the process of installation. Improper installation may cause
water leakage, electric shock and fire.
Make sure that the units are mounted at locations which are able to provide full support to the weight of the units. If not, the units may
collapse and impose danger.
Observe the rules and regulations of the electrical installation and the methods described in the installation manual when dealing
with the electrical work. Use cables which are approved official in your country. Be sure to use the specified circuit. A short circuit and
fire may occur due to the use of low quality wire or improper work.
Be sure to use the specified cables for connecting the indoor and outdoor units. Please ensure that the connections are tight after the
conductors of the wire are inserted into the terminals to prevent the external force is being applied to the connection section of the
terminal base. Improper insertion and loose contact may cause over-heating and fire.
Please use the specified components for installation work. Otherwise, the unit may collapse or water leakage, electric shock, fire or
stronger vibration may occur.
Be sure to use the specified piping set for R410A, R32. Otherwise, this may result in broken copper pipes or faults.
When installing or transferring an air conditioner to another location, make sure that air other than the specified refrigerant (R32)
does not enter the refrigeration cycle. If other air should enter, the pressure level of the refrigeration cycle may increase abnormally
which could result in a rupture and injury.
Never install a drier to this R32 unit in order to guarantee its lifetime.
Be sure to ventilate fully if a refrigerant gas leak while at work. If the refrigerant gas comes into contact with fire, a poisonous gas may occur.
After completion of installation work, check to make sure that there is no refrigeration gas leakage. If the refrigerant gas leaks into the
room, coming into contact with fire in the fan-driven heater, space heater, etc., a poisonous gas may occur.
Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a qualified air conditioner
technician or electrician. Improper repairs may result in water leakage, electric shock and fire, etc.
Be sure to connect the earth line from the power supply wire to the outdoor unit and between
the outdoor and indoor unit. Do not connect the earth line to the gas tube, water pipe, lighting rod or the earth line of the
telephone unit. Improper earthing may cause electric shocks.
When finishing the refrigerant collection (pumping down), stop the compressor and then remove the coolant pipe.
If you remove the refrigerant pipe while the compressor is operating and the service valve is released, air is sucked and a
pressure in the freezing cycle system will build up steeply, causing an explosion or injury.
When installing the unit, be sure to install the refrigerant pipe before starting the compressor.
If the refrigerant pipe is not installed and the compressor is operated with the service valve released, air is sucked and the
pressure level of the refrigeration cycle may increase abnormally which could result in a rupture and injury.
The electric cables should neither be reworked nor added.
Make sure to use an exclusive circuit breaker.
Otherwise fire or electric shock might occur by connection failure, isolation failure or over current.
Make sure to connect cables to terminal properly and terminal cover should close firmly.
Otherwise, over heating at terminal contact, fire or electric shock might occur.
Make sure that there is no dust on any connected points of electric cables and fix firmly.
Otherwise, fire or electric shock might occur.
CAUTION
A circuit breaker must be installed in the house distribution box for the direct connected power supply cables to the
outdoor unit. In case of other installations a main switch with a contact gap or more than 3mm has to be installed.
Without a circuit breaker, the danger of electric shock exists.
Do not install the unit near a location where there is flammable gas. The outdoor unit may catch fire
if flammable gas leaks around it.
Please ensure smooth flow of water when installing the drain hose. Improper installing may wet your fu niture.
An IEC approved power cord should be used. Power cord type: NYM.
r
CAUTION
No nearby heat source and no obstruction near the air
outlet is allowed.
The clearance distances from top, right and left are
specified in figure below.
The location must be convenient for water drainage and
pipe connection with the Outdoor unit.
INDOOR UNIT
To avoid interference from noise, please place the unit and
its remote controller at least 1m from the radio and
television.
To avoid any error in signal transmission from the remote
controller, please put the controller far away from highfrequency machines and high-power wireless systems.
The installation height should be at least 2300 mm or more
from the floor.
Names of Indoor Components
No. Item Qty
Hanger
1
Screw for Hanger
2
AAA size Battery
3
Screw for holder of
Remote Controller
4
Remote Controller
5
Insulation sheet
6
Drain Pipe
7
Bush
8
Binding band
9
The component of
The component of
the package of the outdoor unit.
the package of the outdoor unit.
L.H
(RAC-50WED)
87
is included in
is included
Direction of Piping
Backward piping
from left
Connection
There are 6 directions allowed,
namely, backward piping,
backward pi ping fr om left ,
hor izontally piping from right,
horizontally pip ing from le ft ,
vertically down from right, vertically
down from left.
Dimension of Mounting
Stand of the Outdoor unit
(unit : mm)
RAC-18/25/35WED
(10)
29780317
10
RAC-50WED
(10)
340
32010
The clearances of the
unit from top, left, right
and front are specified
in figure below. At least
three of the above sides
must be open air.
above 100mm
For outdoor unit installation, allow at least
2 sides of space around the unit to ensure
ventilation flue.
792
500
660
500
Mounting
Stand
50
12
34
Mounting
Stand
57
12
39
146
above 300mm
Selecting the installation location: Suitable location that
will reduce the impact from rain and direct sun that may
affect the unit performance.
Besides, ventilation must be good and clear of obstruction.
The air blown out of the unit should not point directly to
animals or plants.
The clearances of the unit from top, left, right and front are
OUTDOOR UNIT
specified in figure below. At least there of the above sides
must be open air.
Be sure that the hot air blown out of the unit and noise do
not disturb the neighbourhood.
Do not install at a location where there is flammable gas,
steam, oil and smoke.
The location must be convenient for water drainage.
Place the Outdoor unit and its connecting cord at least 1 m
away from the antenna or signal line of television,
telephone. This is to avoid noise interference.
Be sure to
co mpl et ely
seal any gap
with putty.
about 300mm
above 200mm
CAUTION
Figure showing the Installation
of Indoor and Outdoor Unit.
above
50mm
above 50mm
about 450m
must not bend
Maximum pipe length 20m
Minimum pipe length 3m
1
above 50mm
give clearance
as wide as
possible
above
200mm
2300 mm or more
Th e i nd oo r p ip in g s ho uld b e
in sul at ed wit h th e en close d
insulation pipe. (If the insulator is
insufficient, please use commercial
products.)
The refrigerating machine oil is
easily affected by moisture. Use
caution to prevent water from
entering the cycle.
The difference in height between
th e in do or and out do or uni t
should be kept below 10m.
The connecting pipe, no matter
bi g or sm al l, sho ul d a ll b e
insulated with insulation pipe and
then wrapped with vinyl tape.
(The insulator will deteriorate if
it is not wrapped with tape).
The connection of insulated drain
hose.
Inner diameter 16mm
Please use insulated drain hose for
th e in do or piping (commer ci al
product)
radio or
2
above 50mm
1 Installation of Hanger, Wall Penetration and Installation of Protection Pipe
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.
Direct Mounting On The Wall
Please use hidden beams in the wall to hold the hanger.
Visible outline
indoor unit
123mm
280mm
42.5mm
60mm
22mm
85mm
of the
Line
220mm
Level
Weight
450mm
445mm
440mm
534mm
780mm
15mm
115mm
65mm
Screw for Hanger
Hanger
Wall hole
45mm
123mm
32.5mm
59mm
184mm
80mm
Screw the hanger at the
positions possibly near the
upper and lower hooks where
the indoor unit is hung. Use 4 or
more screws to fix the hanger.
Drain Hose
Procedures of Installation and Precautions
Procedures to fix the hanger.
INDOOR UNIT
1.Drill holes on wall.
(As shown below)
Wall
ø4.8mm
32mm
2.Push plug into the holes.
(As shown below)
Hanger
Screw
Wall
Plug
(Procure
locally)
3.Fix the hanger on wall with
4.1 x 32 screw.
(As shown in figure below)
Ceiling
Wall Penetration and Installation of Protection Pipe
Drill a ø65mm hole on wall which is
slightly tilted towards the outdoor side.
Drill the wall at a small angle.
Cut the protection pipe according to the
wall thickness.
Empty gap in the sleeve of protection
pipe should be completely sealed with
putty to avoid dripping of rain water into
the room.
Please ensure smooth flow of water
when installing the drain hose. Improper
installing may wet your funiture.
An IEC approved power cord should be
used. Power cord type: NYM.
Indoor
Seal with
putty
Protection
pipe
WALL
Outdoor
2-5mm
Seal with
putty
Sleeve of
protection
pipe
WARNING
Be sure that the wire is not
in contact with any metal in
the wall. Please use the
protectio n pip e as wire
passing through the hollow
part of the wall so as to
prevent the possibility of
damaged by mouse.
Unless it seals completely,
any air with high humidity
flows from outdoor and any
dew may drop.
42.5mm
2 Installation Of The Indoor Unit
Cutting Low Cover bush
While installing the pipe from the right, left or
bottom side, use a knife to cut openings as
shown in figure. Then smoothen the edges of
openings with a file.
Openings
PIPING FROM THE RIGHT SIDE (BACKWARD, DOWNWARD, HORIZONTAL)
Openings
Preparation
Connect connecting cord.
Pull out the pipe, connecting cord and drain hose.
Installation
Insert the pipe through the wall hole.
The upper part of the Indoor unit is hanged on the
hanger.
The projection at the lower part of the Indoor unit is
hooked onto the hanger.
Hanger
Refrigerating
Pipe
Protection
Pipe
PIPING FROM THE LEFT SIDE (BACKWARD, DOWNWARD, HORIZONTAL)
Drain Hose
Connecting Cord
Lift the body
of the unit
upwards and
then force it
downwards.
Hanger
Projection
Connecting cords, pipe and
drain hose must be laid
together with Vinyl tape.
Wall hole
Pipe
Cable
Drain layout of
backward piping
Drain hose
Preparation
Changed of Drain Hose and Installation Procedures.
Exchange the location of drain hose and drain cap while installing the pipe from the left side as
shown in below. Be sure to plug in the drain hose until the insulating material folds upon itself.
Please use pliers to pull out the drain cap.
(This is an easier way to remove the drain
cap).
Drain hole
Hexagonal wrench
key (Φ4mm)
Drain hole
Drain cap
Hexagonal wrench
key (Φ4mm)
Drain Hose
Remove low cover
Insert drain cap up to the
Please use hexagonal wrench key(Φ4mm) to insert the drain cap.
(This is an easier way to install the drain cap.)
Push the pipe deeply until the insulating
section of the drain hose end gets over
the rib at the indoor unit side.
location securely till the cap stops.
CAUTION
Insufficient insert may
result in water leakage.
CAUTION
The rubber strap used for fixing the insulator
should not be tied with great force. Otherwise,
this will damage heat insulation and causes
water condensation.
Please pull the lower part of the Indoor unit
outwards to check if the unit is hooked onto
the hanger. Improper installation may cause
vibration and noise.
Transform the piping while holding down the
lower portion of pipe-support by hand.
Pipe
Pipe
support
Rubber strap tied
with great force
Transform after
bending downward.
INSTALLATION AFTER CONNECTION OF REFRIGERATING PIPES
The refrigerating pipe should be adjusted to fit into
the hole on the wall and then ready for further
connection.
Drain hose
The terminals of 2 connected pipes must be covered
with insulator used for terminal connection. Then the
pipes are wrapped with insulation pipe.
Pipe
Connecting
cord
Connect the connecting cord after removing low
cover.
(Refer to "CONNECTION OF POWER CORD")
After adjustment, fit the connecting cord and pipes
into the space available under the unit. Use holder to
hold them tight.
Be sure to cut the extra binding band.
(Otherwise, it may result in abnormal noise or dewfall.)
9
Binding band
Binding band can be
installed to whichever
side of the installation
points. However, it is
recommended to attach
it on the right side
viewing from the rear.
Insulation pipe (must be
wrapped with
at every 120 mm)
vinyl tape
THE CONNECTION OF REFRIGERATING PIPE DURING
THE INSTALLATION OF INDOOR UNIT
Preparation To Install Refrigerating Pipes
Th e refr igerating pip es and con necting cord
transform and are attached.
Installation
Hang the indoor unit onto the hanger. Use the temporary stand
at the back of the Indoor unit to push its lower part 15cm
forwards.
Place the drain hose through the hole on the wall.
Wrap the refrigerating pipes with insulation pipe after
connecting refrigerating pipe.
Connect the connecting cord after removing low cover.
(Refer to "Connection of Power Cord")
After adjustment, the connecting cord and refrigerating pipes
are placed into the space available under the Indoor unit.
The projection of Indoor unit must hook to the hanger.
Wall hole
Pipe
Cable
Drain layout of
backward piping
from left
Drain
hose
Connecting
cord
3 Heat Insulation and Finish of the Piping
The connected terminals should be completed sealed
with heat insulator and then tied up with rubber strap.
Do not tie the terminals with the tape too tight.
If any clearance or over-tightening may cause
condensation.
Please tie the pipe and power line together with vinyl
tape as shown in the figure showing the installation of
Indoor and Outdoor units.
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.
4 Installation of Drain Hose
Please bend at a small
radius to form an arc
Refrigerating
pipe
Heat
insulation pipe
Pull this to the front during the
connection of refrigerating
pipe to ease task.
The end of the refrigerating pipes are at
about 15cm
” symbol.
below
5mm
Hook
Connected
section
Putty
locations marked with “
Projection
Protection
pipe
Drain
hose
Connecting cord
Insulation material for pipe
connection
Sleeve of
protection pipe
Putty
CAUTION
Bending upwards
CAUTION
Ditch
Condensed water
pond
Condensed
water pond
You are free to choose the side (left or right) for the installation of drain
hose. Please ensure the smooth flow of condensed water of the Indoor
unit during installation. (Careless may result in water leakage.)
Be sure that the drain hose is
not loosely connected bend or
proper condition like left figure.
RAK_RAS_18/25/35/50PEC_IM_English 1
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.
TINU ROODTUO
RAC-18/25/35WED
Please face this side (suction side)
of the unit to the wall.
RAC-50WED
Please face this side (suction side)
of the unit to the wall.
Please remove terminal cover
when connecting the piping
and connecting cord.
Pull downward
Please remove terminal cover
when connecting the piping
and connecting cord.
Do not touch the suction
Pull downward
po rt, bot to m su rface, or
aluminum fin of the outdoor
unit.
Failure to do so may cause
an injury.
CAUTION
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-18/25/35WED
BASE
above
70mm
Outer diameter:
16 mm or more
7 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 remo
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.
RAC-50WED
BASE
above
100mm
DRAIN HOLE
Outer diameter:
16 mm or more
Push Push
BUSH
8
7 DRAIN PIPE
DRAIN HOLE
8
BUSH
ve
1 Preparation of Pipe
Use a pipe cutter to cut the copper pipe and remove burr.
AV
OME
R RIA
Copper pipe
Trimming tool
CAUTION
DNA SE
PIP GN
ITARE
GIRFE
R FO N
OITALL
ATSN LI
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.
Die
Die
A
Please use
exclusive tool for
refrigerant R410A,
Copper pipe
R32.
Outer A (mm) Rigid Flaring Tool
Diameter (Ø) For R410A,R32 tool For R22 tool
6,35 (1/4")
9,52 (3/8")
12,7 (1/2")
0 - 0,5
0 - 0,5
0 - 0,5
1,0
1,0
1,0
2 Pipe 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
CAUTION
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.
Wrench
working.
Be sure to tighten the flare nut to the specified torque with
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
Flare nut
Torque
wrench
Small diameter side
Large diameter side
Small diameter side
Valve
head cap
Large diameter side
Valve core cap
of pipe (ø)
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
13.7-18.6 (140 - 190)
34.3-44.1 (350 - 450)
44.1-53.9 (450 - 550)
19.6-24.5 (200 - 250)
19.6-24.5 (200 - 250)
29.4-34.3 (300 - 350)
12.3-15.7 (125 - 160)
Torque N·m
(kgf·cm)
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.
LA
Fully tighte the "Hi" shuttle of the manifold
valve and completely unscrew the "Lo"
n
shuttle. Run the vacuum pump for about
VOME
10-15 minutes, then completely tighten the
"Lo" shuttle and switch off the vacuum
pump.
2
Loosen the spindle of the service valve
with small diameter by 1/4 turn and
R RIA
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
cap's periphery if there is any gas leakage.
4
The task is then completed.
The body of service
valve
Cap of
valve core
Hexagonal
Cap of valve
head
wrench Key
Cap of valve
head
Gas leakage inspection
Please use gas leakage detector to check if leakage
connection of Flare nut as shown on the
If gas leakage occurs, further tighten the connection
right.
When the meter reaches - 101KPa
(-76cmHg) during pumping lly
tighten the shuttle.
Charge
hose
Valve
When pumping starts, slightly
loosen the flare nut to check of
air sucked in. Then tighten the
flare nut.
occurs at
to stop leakage.
Meter showing
pressure
Closed
R410A,R32
Manifold
valve
Valve
Vacuum
pump
adapter
,fu
Vacuum
pump
THIS APPLIANCE MUST BE
WARNING
EARTHED.
Procedures of Wiring
Indoor Unit Outdoor Unit
1 2 3
DROC REWOP FO NOITCENNOC
Connecting Cord
Detail of Cutting the Connecting Cord
Indoor Unit
70mm
10mm
10mm
45mm
1
2
3
Strip
wires
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.
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.
Green + Yellow
(ground)
Strip
wires
Connecting cord
WARNING
WARNING
1 2 3
L N
Outdoor Unit
160mm
10mm
Green +
Yellow
AC 220-230V
1ø 50Hz
1
2
3
20mm
100mm
Connecting cord
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.
Earth
After remove the screw
and terminal cover, and
put the connecting cords
and fix the terminal cover
with screw.
Method to remove the low cover
Pull at the and in
the directions as shown
by arrows to remove the
cover.
WARNING
When the fuse (F5 or F6) has been blown out by the improper connection of
power cable, it can be restored by
HWRAC-50NX 2 A52)
Please exchange the blown-out fuse after making sure the right connection.
exchanging the fuse (service part No
Connecting
cord
Cord band
How to connect the optional parts
(WIFI Adapter, 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
WIFI Adapter H-LINK RAC Adapter: CN7 or
Wired Remote Control : CN20
ler
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
CN6
CN7
plate when connecting the optional parts.
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.
RAC-18/25/35WED
T
erminal marking
Cord band
L N 1 2 3
Abdeck
cover
Earth terminal
Investigate the power supply capacity and other
electrical conditions at the installing location.
Depending on the model of room air conditioner to be
installed, request the customer to make arrangements
for the necessary electrical work etc.
The electrical work includes the wiring work up the
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.
RAC-50WED
Cord band
IMPORTANT
RAC-18/25/35WED
Wire length
L N 1 2 3
cover
Earth terminal
Fuse Capacity
5
1 A time delay fuse
RAC-50WED
A time delay fuse25
Wire cross-section
up to 6m 1.5mm
up to 15m 2.5mm
up to 20m 4.0mm
2
2
2
Power Source And Operation Test
Power Source
WARNING
NOITALLATSNI FO EGATS LANIF
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
s Please ensure that the air conditioner is in normal operating
condition during the operation test.
s Explain to your customer about the proper operation procedures
as described in the operation manual.
s If the indoor unit won’t operate, check the cable for correct
connection.
How to remove the front cover How to Attach the Front Cover
Remove the front panel
2
Push
1
Push the end of the right-side arm outward to release the
1
Arm
tab.
2
Move the left-side arm outward to release the left tab, and
then pull the panel towards you.
Remove the filters.
After removing 3 screws,
pull
the
center of the front cover towards you and release
claws.
the
remove the cover of electric box,
Pull the side faces (lower sections) of the front cover towards
you as shown in the figure and remove the cover.
After installing the front cover onto the unit, hook three claws
at upper side of the cover securely. Then, push the center of
the front cover to lock the claws.
Assemble the cover of electric box.
Tighten the 3
screws.
Install the filter.
Attaching the Front Panel
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.
Claw
Claw
Claw
cover
Screw
RAK_RAS_18/25/35/50PEC_IM_English
SClaw
crew
HOW TO REMOVE INDOOR UNIT
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)
[PUSH] mark positions
2
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