Hitachi RAK-18PEC, RAC-18WEC, RAK-35PEC, RAC-35WEC, RAK-50PEC Installation manual

...

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.

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.

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.

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

Screw for Hanger

AAA size Battery

Screw for holder of Remote Controller

Remote Controller

L.H

Insulation sheet

Drain Pipe

Bush

(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

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

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.

500

660

12 39

500

792

above 300mm

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

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

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

280

mm 5

, 42

of the

225 18

37.5

Line

115

Level

Weight

310 590 780

556 450

mm mm

 Screw for Hanger

 Hanger

Wall hole

50.5

9595

47.5

80 80

66.5

164

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

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 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

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

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

Push the pipe deeply until the insulating

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

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

7 DRAIN PIPE

DRAIN HOLE

BUSH

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

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)

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.

Connect the vacuum pump adapter to the vacuum pump and connect the charge hose to the adapter.

LAVOMER RIA

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.

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

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.

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

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

45mm

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

1 2 3

L N

Outdoor Unit

160mm

10mm

Green + Yellow

AC 220-230V 1ø 50Hz

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

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

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

A time delay fuse25

Wire cross-section

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