Hitachi RAK-18PEC, RAC-18WEC, RAK-35PEC, RAC-35WEC, RAK-50PEC Installation 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
s The unit should be mounted at stable, non-vibratory location
which can provide full support to the unit.
s The Outdoor unit must be mounted at a location which can
support heavy weight. Otherwise, noise and vibration will
WARNING
increase.
RAK-18PEC/RAC-18WEC
RAK-25PEC/RAC-25WEC
RAK-35PEC/RAC-35WEC
RAK-50PEC/RAC-50WEC
RAK-25PECC/RAC-25WEC
RAK-35PECC/RAC-35WEC
RAK-50PECC/RAC-50WEC
RAK-10PECI/RAC-10WECI
RAK-14PECI/RAC-14WECI
RAK-20PECI/RAC-20WECI
SAFETY PRECAUTION
s Read the safety precautions carefully before operating the unit.
s 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
s 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.
s Please observe the installation stated in the installation manual during the process of installation. Improper installation may cause
water leakage, electric shock and fire.
s 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.
s 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.
s 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.
s Please use the specified components for installation work. Otherwise, the unit may collapse or water leakage, electric shock, fire or
stronger vibration may occur.
s Be sure to use the specified piping set for R410A. Otherwise, this may result in broken copper pipes or faults.
s When installing or transferring an air conditioner to another location, make sure that air other than the specified refrigerant (R410A)
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.
s 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.
s 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.
s 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.
s 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.
s 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.
s 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.
s
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.
s
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.
s
Otherwise, fire or electric shock might occur.
CAUTION
s
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.
s 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.
s Please ensure smooth flow of water when installing the drain hose. Improper installing may wet your fu niture.
s An IEC approved power cord should be used. Power cord type: NYM.
r
CAUTION
TINU ROODNI
s No nearby heat source and no obstruction near the air
outlet is allowed.
s The clearance distances from top, right and left are
specified in figure below.
s The location must be convenient for water drainage and
pipe connection with the Outdoor unit.
s To avoid interference from noise, please place the unit and
its remote controller at least 1m from the radio and
television.
s 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.
s 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
L.H
Insulation sheet
6
Drain Pipe
7
Bush
8
(RAC-50WEC,RAC-20WECI)
is included in
The component of
The component of
the package of the outdoor unit.
the package of the outdoor unit.
is included
87
Direction of Piping
Backward piping
from left
Connection
There are 6 directions allowed,
namely, backward piping,
backward piping from left,
horizontally piping from right,
horizontally piping from left,
vertically down from right, vertically
down from left.
Dimension of Mounting
Stand of the Outdoor unit
(unit : mm)
RAC-18/25/35WEC
RAC-10/14WECI
(10)
317
297
10
RAC-50WEC
RAC-20WECI
(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.
50
34
500
660
57
12
39
500
792
above 300mm
Mounting
Stand
12
80
Mounting
Stand
146
CAUTION
TINU ROODTUO
s 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.
s The air blown out of the unit should not point directly to
animals or plants.
s The clearances of the unit from top, left, right and front are
specified in figure below. At least there of the above sides
must be open air.
s Be sure that the hot air blown out of the unit and noise do
not disturb the neighbourhood.
s Do not install at a location where there is flammable gas,
steam, oil and smoke.
s The location must be convenient for water drainage.
s 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.
Figure showing the Installation
of Indoor and Outdoor Unit.
above
50mm
1
above 50mm
give clearance
as wide as
possible
above
200mm
2300 mm or more
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator is
insufficient, please use commercial
products.)
s The refrigerating machine oil is
easily affected by moisture. Use
caution to prevent water from
entering the cycle.
s The difference in height between
the indoor and outdoor unit
should be kept below 10m.
s The connecting pipe, no matter
big or small, should all be
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
the indoor piping (commercial
product)
Be sure to
completely
seal any gap
with putty.
mm003 tuoba
above 200mm
above 50mm
about 450m
dne
b ton tsum
Maximum pipe length 20m
Minimum pipe length 3m
radio or
2
above 50mm
1 Installation of Hanger, Wall Penetration and Installation of Protection Pipe
CAUTION
s 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
s Please use hidden beams in the wall to hold the hanger.
Visible outline
outdoor unit
mm
280
mm
5
,
42
of the
225 18
mm
mm
37.5
65
mm
mm
60
70
Line
115
mm
Level
Weight
mm
mm
310
590
780
556
450
mm
mm
mm
mm
mm
mm
Screw for Hanger
Hanger
Wall hole
mm
50.5
9595
47.5
m
m
65
mm
80 80
mm
66.5
mm
mm
164
mm
mm
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
s Procedures to fix the hanger.
INDOOR UNIT
1.Drill holes on wall.
(As shown below)
Wall
4.8mmø
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
s
Drill a ø65mm hole on wall which is
slightly tilted towards the outdoor side.
Drill the wall at a small angle.
s
Cut the protection pipe according to the
wall thickness.
s
Empty gap in the sleeve of protection
pipe should be completely sealed with
putty to avoid dripping of rain water into
the room.
s
Please ensure smooth flow of water
when installing the drain hose. Improper
installing may wet your funiture.
s
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
protection pipe 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.
2 Installation Of The Indoor Unit
Cutting Low Cover bush
s 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
s Connect connecting cord.
s Pull out the pipe, connecting cord and drain hose.
Installation
mm
s Insert the pipe through the wall hole.
42,5
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
Hanger
Lift the body
of the unit
upwards and
then force it
downwards.
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
s
shown in below. Be sure to plug in the drain hose until the insulating material folds upon itself.
s 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
s
s
s
Push the pipe deeply until the insulating
s
section of the drain hose end gets over
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.)
the rib at the indoor unit side.
location securely till the cap stops.
CAUTION
Insufficient insert may
result in water leakage.
CAUTION
s 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.
s 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.
s 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
s The refrigerating pipe should be adjusted to fit into
the hole on the wall and then ready for further
connection.
Drain hose
s The terminals of 2 connected pipes must be covered
with insulator used for terminal connection. Then the
pipes are wrapped with insulation pipe.
s Connect the connecting cord after removing low
Pipe
Connecting
cord
cover.
(Refer to "CONNECTION OF POWER CORD")
s After adjustment, fit the connecting cord and pipes
into the space available under the unit. Use holder to
hold them tight.
s Holder can be attached at the either of 2 places.
Please select the easier position.
Insulation pipe (must be wrapped with
vinyl tape at every 120 mm)
Holder
THE CONNECTION OF REFRIGERATING PIPE DURING
THE INSTALLATION OF INDOOR UNIT
Preparation To Install Refrigerating Pipes
s The refrigerating pipes and connecting cord
transform and are attached.
Please bend at a small
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.
s Place the drain hose through the hole on the wall.
s Wrap the refrigerating pipes with insulation pipe after
connecting refrigerating pipe.
s Connect the connecting cord after removing low cover.
(Refer to "Connection of Power Cord")
s After adjustment, the connecting cord and refrigerating pipes
are placed into the space available under the Indoor unit.
s 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
s The connected terminals should be completed sealed
with heat insulator and then tied up with rubber strap.
s Do not tie the terminals with the tape too tight.
If any clearance or over-tightening may cause
condensation.
s Please tie the pipe and power line together with vinyl
tape as shown in the figure showing the installation of
Indoor and Outdoor units.
s To enhance the heat insulation and to prevent water
condensation, please cover the outdoor part of the
drain hose and pipe with insulation pipe.
s Completely seal any gap with putty.
4 Installation of Drain Hose
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
locations marked with “
Projection
Protection
pipe
Drain
hose
Connecting cord
Insulation material for pipe
connection
Sleeve of
protection pipe
Putty
” symbol.
below
5mm
Hook
about 15cm
Connected
section
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
s Please mount the Outdoor unit of stable ground to prevent vibration and increase
of noise level.
s Decide the location for piping after sorting out the different types of pipe available.
s 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-18/25/35WEC
RAC-10/14WECI
Please face this side (suction side)
of the unit to the wall.
RAC-50WEC
RAC-20WECI
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.
s Do not touch the suction
Pull downward
port, bottom surface, or
aluminum fin of the outdoor
unit.
Failure to do so may cause
an injury.
CAUTION
CONDENSED WATER DISPOSAL OF OUTDOOR UNIT
s There is holes on the base of Outdoor unit for condensed water to exhaust.
s 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.
s After installation, check whether the drain pipe clings to the base firmly.
RAC-18/25/35WEC,RAC-10/14WECI
BASE
above
70mm
Outer diameter:
16 mm or more
7 DRAIN PIPE
s Install the outdoor unit horizontally and make sure that condensate drains away.
s 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
bush and the drain pipe at the bottom of unit. (Left and center near discharge
the
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-50WEC,RAC-20WECI
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
s Use a pipe cutter to cut the copper pipe and remove burr.
OMER RIA DNA SEPIP GNITAREGIRFER FO NOITALLATSNILAV
Copper pipe
Trimming tool
CAUTION
s Remove burr and jagged edge will cause leakage.
s Point the side to be trimmed downwards during trimming to prevent copper
chips from entering the pipe.
s Before flaring, please put on the flare nut.
Die
Outer A (mm) Rigid Flaring Tool
Diameter (Ø) For R410A 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
2 Pipe Connection
s 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
s Please be careful when bending the copper pipe.
s Screw in manually while adjusting the center. After that, use a torque wrench to
tighten the connection.
Wrench
working.
s 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.
Flare nut
Torque
wrench
Small diameter side
Large diameter side
Small diameter side
Valve
head cap
Large diameter side
Die
Valve core cap
A
s Please use
exclusive tool for
Copper pipe
refrigerant R410 .
1,0
1,0
1,0
Outer diameter
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")
Torque N·m
(kgf·cm)
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)
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.
LAVOMER RIA
A
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
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
s Loosen the spindle of the service valve
with small diameter by 1/4 turn and
tighten the spindle immediately after 5
to 6 seconds.
s 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
right.
occurs at
to stop leakage.
When the meter reaches - 101KPa
(-76cmHg) during pumping fully
tighten the shuttle.
Meter showing
pressure
Closed
Charge
hose
Valve
Valve
When pumping starts, slightly
loosen the flare nut to check of
air sucked in. Then tighten the
flare nut.
R410A
Manifold
valve
Vacuum
pump
adapter
Vacuum
pump
s 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
s 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.
s Be sure to use only wire specified for the use of air-conditioner.
s Please refer to the manual for wire connection and the wiring technique should
meet the standard of the electrical installation.
s 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.
s Leave some space in the connecting cord for maintenance
purpose and be sure to secure it with the cord band.
s 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
s 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.
s Remove the cover from the terminal base and screw the cable.
Connecting
cord
Earth
Cord band
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
s Pull at the and in
the directions as shown
by arrows to remove the
cover.
WARNING
s
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.
How to connect the optional parts
(WIFI Adapter, H-LINK RAC Adapter, Dry contact, Wired Remote Controller)
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.
Dry contact: CN6
WIFI Adapter/H-LINK RAC Adapter: CN7
Wired Remote Control : CN20
ler
CN20
CN21
CN7
CN6
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.
CN7
CN6
Wiring of the Outdoor Unit
s Please remove the side cover for wire connection.
s 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.
s 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.
s 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
s 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-18/25/35WEC,RAC-10/14WECI
T
erminal marking
Cord band
L N 1 2 3
Abdeck
cover
Earth terminal
s 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.
s Install outdoor for the room air conditioner within the
reaching range of the line cord.
RAC-50WEC,RAC-20WECI
L N 1 2 3
Cord band
IMPORTANT
RAC-18/25/35WEC
RAC-10/14WECI
RAC-50WEC
RAC-20WECI
Wire length
Fuse Capacity
up to 6m 1.5mm
up to 15m 2.5mm
up to 20m 4.0mm
cover
Earth terminal
1 A time delay fuse
5
A time delay fuse25
Wire cross-section
2
2
2
Power Source And Operation Test
Power Source
WARNING
NOITALLATSNI FO EGATS LANIF
s Never remodel the power plug nor extend the long-distance
cord.
s Keep additional length for the power cord and do not render
the plug under external force as this may cause poor contact.
s Do not fix the power cord with U-shape nail.
s 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.
How to remove the front cover How to Attach the Front Cover
Remove the front panel
s Please remove and attach the front panel by both hands.
s After opening the front panel by both hands.
Undo the right arm while pushing it inside.
Slide the front panel to right as shown in figure. Then remove
while pulling it to front.
Remove the filters.
After removing two screws, pull the center of the front cover
towards you and release the claws.
Pull the side faces (lower sections) of the front cover towards
you as shown in the figure and remove the cover.
Check that the drain pan is securely attached.
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.
Tighten the two screws.
Install the filter.
Slide the shafts of the right and left arms on the front panel
along the steps to insert the shafts into the holes till they stop.
After checking that the shafts are securely inserted, close the
panel.
RAK_RAS_18/25/35/50PEC_IM_English
Screw
HOW TO REMOVE INDOOR UNIT
s 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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