Hitachi RAK-25PSB, RAC-25WSB, RAK-18PSB, RAC-18WSB, RAK-35PSB Installation manual

...

Mounting board

Screw for mounting board

Remote controller

Bush

Drain pipe

Fixed leg dimension of outdoor unit

INDOOR UNIT / OUTDOOR UNIT

Items 8 & 9 are included in the package of the outdoor unit.

Heat insulating materials

310

299

500

792

330

HITACHI SPLIT UNIT AIR CONDITIONER

INSTALLATION MANUAL

•

Carefully read through the procedures of proper installation before starting installation work.

•

The sales agent should inform customers regarding the correct operation of installation.

No nearby heat source and no obstruction near the air outlet is allowed.

The installation height should be at least 2.3m or more from the floor.

The air blown out of the unit should not point directly to animals or plants.

Do not install at a location where there is flammable gas, steam, oil and smoke.

Direction of Piping

Piping configuration may be in six different directions: direct rear piping, left or right downward piping and left or right sideways piping.

Above 50mm

Be sure to com pletely seal any gap with putty.

The space indicated by an arrow

is to guarantee the performance of the air conditioner. Install the apparatus at the ample space in order to carry out the maintenance and repair works.

Above 50mm

Above 50mm (Above 100mm when there is piping connection at the back of the outdoor unit)

Above 80mm

Above 50mm

give clearance as

widely as possible

When installing the indoor unit above the curtain rail or curtain box, allow dimensions not affecting the airflow.

Maximum pipe length 20m

Above 200mm

About 300mm

Must not bend

The indoor piping should be insulated with the enclosed insulation pipe.

Above 200mm

Above 50 mm when installed on the ceiling of balcony

Above 100mm

Heating efficiency will be enhanced if the space below the outdoor unit is closed so that no air passes through.

(Procure the material locally.)

The refrigerating machine oil is easily affected by moisture. Use caution to prevent water from entering the cycle.

Connection of insulated drain hose

Please use insulated drain hose for the indoor piping (commer cial product).

Inner diameter

16mm

• The difference in height between the indoor and outdoor unit should be kept below 10m.

• 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.

About 0.45m

Horizontally backward

For outdoor unit installation, allow at least 2 sides of space around the unit to ensure ventilation flue.

2.3m or more

Figure showing the installation of Indoor and Outdoor Unit (For example: Ground installation)

No. Supplied Items Qty

AAA size battery

Anti-mold wasabi cassette

Drill a ø65mm hole on wall

which is slightly tilted towards the outdoor side.

Cut the protection pipe

according to the wall thickness and pass through the wall hole.

Empty gap in the sleeve of

protection pipe should be completely sealed with putty to avoid dripping of rain water into the room.

2~5mm

WALL

Putty

Sleeve of protection pipe

Protection pipe

Putty

Indoor

Outdoor

2. Installation of the Indoor Unit

2.1 Preparation of Installation

Remove the front panel

•

To remove front panel, please refer to “Removing and Attaching the Front Panel” on page 13.

•

Make sure to use both hands to attach and remove the front panel.

Remove the lower cover

•

Push the bottom inner part (1) of the lower cover to remove the lower cover.

•

To attach the lower cover, attach 2 first and then attach 1 by rotating it around 2 as the fulcrum.

Remove

Attach

Wiring connection

•

Please refer to “Connection of Power Cord” on page 10.

Cutting lower cover bush (Horizontal and downward piping)

•

While installing the pipe from the right, left or bottom side, use a knife to cut lower cover bush accordingly.

•

Use the groove on the outer side if the pipe which is to be installed from the left side, etc. is big.

Bush part

Groove on the outer side

Groove on the inner side

Changing of drain hose

(Horizontally piping)

•

Install and change the drain hose and drain cap when installing the pipe horizontally as shown below

•

Remove the lower cover when installing and changing.

•

Do not carry out horizontal piping for drain hose.

Remove the screw and

pull out the drain hose.

Drain hose screw

Insert drain cap up to the

location securely till the cap stops.

Drain cap

Drain hose

Drain hose screw

Use the plier to pull and turn the drain cap for easy removal.

Push the drain hose deeply

the removed screw during step 1.

CAUTION

•

Be sure to insert drain hose and drain cap firmly and

fix with screw

Insufficient insert may result in water leakage.

WARNING

•

Protection pipe (commercial product) must be used

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 to prevent damaged by mouse, possibility of short circuit or fire.

•

Completely seal 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.

Bush part

Drain hose

Preparation of Pipe

Backward piping

Remove the auxiliary insulation material sheet which is attached to the pipe insulation.

Referring to the mark on the rear side, form the pipe within the wall hole range.

Wall hole range

Horizontally and downward piping from the right

Remove the auxiliary insulation material sheet which is attached to the pipe insulation. (Keep the removed auxiliary insulation material sheet because it will be reused after pipe connection.)

Carry out refrigerating pipe forming.

Layout of horizontally piping from the right

Temporarily join the refrigerating pipe, drain hose and connecting cord with tape.

Place the starting point of refrigerating pipe bending within the wall hole range.

Please bend at a small radius to form an arc.

Pipe

Bottom cover bush hole

Drain hose

CAUTION

•

Transform the piping while holding down the lower portion of pipe-support by hand.

If the starting point of refrigerating pipe bending is projected from the wall hole range or if the bending radius is too large, the indoor unit may be lifted from wall and this may cause poor finishing.

Pipe support

Transform after bending downward

36mm

41mm

Installation after connection of refrigerating pipes (Horizontal piping)

Remove the auxiliary insulation material sheet which is attached to the pipe insulation. Connect the refrigerating pipe. (Refer to “Pipe Connection” on page 9)

Cut the heat insulation sheet refrigerating pipe aligning to the insulation sheet of the pipe and fix them temporarily with tape.

Cover the pipe connection with the auxiliary insulation sheet which was removed earlier, with its split line on the top. Wrap the tape without any gap. Tape must not be over tightened. (

Refer to “Heat insulation and Finishing of Piping” on page 11)

If there is gap or over-tightened, it may cause condensation.

Refrigerating pipe

Pipe

Auxiliary insulation sheet

Refrigerating pipe insulation sheet

Cut

Refrigerating pipe

About 90mm Temporarily wrap with tape

Split line of the auxiliary insulation sheet must be positioned within this range.

Pipe support

Auxiliary insulation sheet

Place the ending point of refrigerating pipe bending within this range.

Pipe support

Refrigerating pipe

Center line of wall hole

Place the refrigerating pipe bending within the wall hole range

ø65 wall hole range

Drain hose

24mm

36~41mm

56.5mm

Temporarily join the refrigerating pipe, drain hose and connecting cord together with tape.

Wrap the wall hole portion with tape.

Wrap with tape

Pipe

Connecting cord

Drain hose

Pipe support

Refrigerating pipe

Center line of wall hole

Place the refrigerating pipe bending within the wall hole range

ø65 wall hole range

Drain hose

24mm

36~41mm

56.5mm

Auxiliary insulation sheet

Connecting the refrigerating pipe at the back of the indoor unit

Remove the auxiliary insulation material sheet which is attached to the pipe insulation. (Keep the removed auxiliary insulation material sheet because it will be reused after pipe connection.)

Hang the indoor unit on the mounting board. Place the cushion under the right rear surface of the indoor

unit to lift the lower side of the unit by approximately 15cm. Connect the refrigerating pipe. (Refer to “Pipe Connection”

on page 9) Cover the pipe connection with the auxiliary insulation sheet

which was removed earlier, with its split line on the top. Wrap the tape without any gap. (Refer to “Installation after connection of refrigerating pipes (Horizontal piping)” on page 5, step 3 )

Insert the drain hose into the wall hole. Connect the connecting cord. (Refer to “Connection of Power

Cord” on page 10). Form connecting cord and refrigerating pipe and put them in

the space on the lower side of the rear surface of the indoor unit.

Remove the temporary stand and hook the projection on the lower part of the indoor unit onto the mounting board.

CAUTION

•

Do not over tighten vinyl tape on pipe heat insulation sheet

Do not over tighten to avoid loss of heat insulating ef

fect

and dew condensation.

•

Pull the lower part of the indoor unit towards you

installation plate

If the tab is not fitted in securely

, vibration of the indoor unit

becomes stronger.

Protection pipe

Drain hose

CAUTION

•

During drainage work, install the drain pipe to ensure smooth drainage. Make sure to carry out drainage check.

Careless work may result in water leakage.

•

Make sure that there is no problem as shown in the

figures on page 8.

Such problems may cause clogged drain and could result in water leakage.

•

Drain hose must be at a slope of at least 1/25.

•

When inserting the drain hose into the drain pipe for embedded piping, etc., do not cut the drain hose in the middle.

This may lead to poorer heat insulating performance of the drain hose and could result in water leakage.

•

Do not lead the drain hose to a place where corrosive gas (sulfur, ammonia, etc.) is generated such as septic tank.

hose, and could result in corrosion on the copper pipe and odor in the room.

3. Drainage Check

After the indoor unit is installed, please ensure the smooth

(Careless work may result in water leakage.)

How to remove the indoor unit

•

Push the [PUSH] section at the bottom of the indoor unit from the outside, the claws are released from the mounting board. (2 places on the left and right)

•

If the bottom of the indoor unit cannot be pushed, remove the bottom part of the front cover and insert a screwdriver into the hole for removal of indoor unit as shown in the

figure. Then, push the claws upwards while holding down

the upper part of the hole 1 and pull the indoor unit towards you 2

. When horizontal piping is used, be careful not to damage the pipe and connecting cord with the tip of the screwdriver during this operation.

•

Please refer to “Removing and Attaching the Front Cover” on page 14 to remove the bottom part of the front cover.

Projection of the indoor unit

Fixing tab

Cushion

About 15cm

Auxiliary insulation sheet

Refrigerating pipe

Connecting cord

Pull this to the front during the connection of refrigerating pipe to ease task.

Auxiliary insulation sheet

Connection part

Connecting cord

Screwdriver

Hold with hand

Hole for removal

Claw

Mounting board

Hole for removal

Form the refrigerating pipe according to the wall hole position.

Especially in the case of horizontally backward piping, follow the instruction below to carry out accurate forming.

Forming of refrigerating pipe for horizontally backward piping

(1) Refer to the mark at the back, start bending the

refrigerating piping within wall hole range.

Connecting the refrigerating pipe at the back of the indoor unit

•

Form and set the refrigerating pipe and connecting cord.

2.2 Installation

Connecting the refrigerating pipe other than at the back of the indoor unit

Insert the pipes through the wall hole. Hang the upper part of the i ndoor unit on the mounting

board. Push the lower part of the indoor unit to the wall, hook

the projection on the lower part of the indoor unit onto the mounting board.

Cover the pipe connection with the auxiliary insulation sheet which was removed earlier, with its split line on the top. Wrap the tape without any gap. (Refer to “Heat insulation and Finishing of Piping” on page 11)

If there is gap or over-tightened, it may cause condensation

CAUTION

•

Place the starting point of refrigerating pipe bending within the wall hole range.

Please bend at a small radius to form an arc.

(2) When forming, bend the refrigerating pipe with the

smallest radius.

Refrigerating pipe

Center line of wall hole

ø65 wall hole range

Drain hose

Refrigerating pipe

Form the connecting cord and refrigerating pipe and put them in the space on the lower side of the rear surface of the indoor unit. Put the binding band on the hook located on the rear surface to fix it.

Join refrigerating pipe, connecting cord and drain hose temporarily with tape and wrap the wall hole portion with tape.

Be sure to cut the extra binding band.

(Otherwise, it may result in abnormal noise or dewfall.)

Hook

Binding band

Wrap with tape

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.

Match the end of the refrigerating pipes with the locations marked with “V” symbol.

Insert a plastic hose (commercial product) into the large diameter pipe.

Below 5mm

1.00m

Please bend at a small radius to form an arc. (Pipe can be bent with a small radius without being crushed if a plastic hose is used.)

Projection of the indoor unit

Mounting board

Protection pipe

Refrigerating pipe

Connecting cord

Drain hose

Small

diameter

Large diameter

FOR SERVICE PERSONNEL ONLY

1.3 Wall Penetration and Installation of Protection Pipe

OUTDOOR UNIT

Bending upwards

Condensed water pond

Ditch

Condensed water pond

CAUTION

Be sure that the drain hose is loosely connected

CAUTION

You are free to choose the side (left or right) for the installation of drain hose. Please ensure the

during installation. (Careless may result in water leakage.)

•

Please mount the outdoor unit on 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 reverse order of the removal.

Please face this side (suction side) of the unit to the wall.

Please remove side cover when connecting the piping and connecting cord.

Pull downward

Elevated stand

Tent

In snowy region, install a snow guard and elevated stand

In other regions, it is recommended to install a tent for shade.

CAUTION

Do not touch the suction port, bottom surface

Failure to do so may cause an injury.

Drain cap Drain hose

•

smooth flow of condensed water of the indoor unit

bend or proper condition like left figure.

to ensure the airflow for better heating efficiency.

or aluminium fin of the outdoor unit.

into the screw hole, fix with

When using a plastic hose, make sure to insert it only after pipe expanding is carried out to avoid cutting dust from getting inside.

flow of condensed water of the indoor unit during installation.

Corrosive gas may flow into the indoor unit through the drain

and confirm that the tab of the indoor unit is

fit in the

RAK-18_25_35PSA_EN.indd 1 2013-2-28 15:56:15

Minimum pipe length 3m

Press it into the hole in the chassis

DRAIN PIPE

above 100mm

BUSH





Press it into the hole in the chassis

RAK-25PSB/RAC-25WSB

RAK-18PSB/RAC-18WSB

RAK-35PSB/RAC-35WSB

Plug

Remote Controller Holder

Screw for Remote

Controller Holder

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.

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 of 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 funiture. s An IEC approved power cord should be used. Power cord type: NYM.

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.

Drain hose

Leveler

Mounting board

Mark

Line

Weight

Pipe hole

Board anchor

Screw fixing the mounting board

s Please use hidden beams in the wall to hold the hanger.

1.2 Procedures of Installation and Precautions

s Procedures to fix the hanger.

1.Drill holes on wall. (As shown below)

2.Push plug into the holes. (As shown below)

3.Fix the hanger on wall with

4.1 x 32 screw. (As shown in figure below)

32mm

Wall

ømm8.4

 Hanger



Screw

Wall

Plug (Procure locally)

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.

Ceiling



798mm

450mm

100mm

175mm

600mm

80mm

350mm 638mm

80mm

42.5mm

200mm

295mm

58mm

52mm

Dimensions of indoor unit

1.1

When Using and Installing In Cold Areas

ᤋ ଋ ႂ ጲ ᄉ ଋ ፝

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

Step

CAUTION



Screw

storage box

Screw

front panel

Screw cover

Terminal block cover

Screw

front panel

Screw 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

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.

• 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.

Body of service valve

Hexagonal wrench key

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

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

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 abnormality 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.

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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)

• 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.

RAK-18_25_35PSA_EN.indd 2 2013-2-28 15:56:17

Indoor Unit Outdoor Unit

Off

Display panel

For cable connection to control P.W.B., you need to remove front cover and electrical box cover.

Each connecting location is as below.

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

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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 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



Procedures to fix the holder of remote control.

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

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

70mm

10mm

45mm

Connecting cord

Strip wires

Green + Yellow

20mm

Strip wires

Connecting cord

Green + Yellow (ground)

L N

Connecting Cord

AC 220-230V 1ø 50Hz

1 2 3

When the indoor unit is installed in a corner, please set it by following the procedure below to achieve the maximum effect:

Left-corner installation

Right-corner installation

Settings of [Comfort Airflow]

Less than 1 m

Indoor unit Indoor unitIndoor unit

Walls

Keep holding it

Hold it for more than 5 seconds

The setting completes when the machine beeps.

When the Comfort Airflow mode is

（This is the factory default setting. ）

When the room and installing location change, please set the remote controller again.

•

••

Walls Walls

Less than 1 m 1 m 1 m

Keep holding it

Hold it for more than 5 seconds

The setting completes when the machine beeps.

Keep holding it

Hold it for more than 5 seconds

Remote controller (with the upper cover opened)

Central installation

••

set to indirect, the air is sent to all areas except the left side.

When the Comfort Airflow mode is set to indirect, the air is sent to all areas except the right side.

Ion Mist

Wind Mode

Wiring of the Outdoor Unit

Please remove the side cover and terminal cover for wiring connection.

WARNING

The connecting cord must be fix with cord band

Otherwise rain water may enter and

cause short circuit. Besides, an external force may apply to the connection part of the connecting cord and could result in heat and fire.

s The terminal cover and side cover must be installed after work is done.

Terminal cover

Terminal marking

L N 1 2 3

Cord band

IMPORTANT

Fuse Capacity

25A time-delay fuse

CAUTION

Outdoor supply cords shall not be lighter than polychloroprene sheathed

flexible cord with code designation 60245 IEC 57.

Wire length

up to 6m 1.5mm

up to 15m 2.5mm

up to 20m 4.0mm

Wire cross-section

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.

Indoor Unit Outdoor Unit

Dust box

Earth terminal

(RAC Adapter, Dry contact, Wired Remote Controller)

H-LINK:CN7

Wired Remote Controller : CN21

Dry contact: CN6

moreOr

Earth

Connecting cord

Cord band

CAUTION

Do not operate the unit for more than 5 minutes while

the spindle of the service valve is closed.

Temporary switch (Force-cooling operation starts when the switch is pressed for more than 5 seconds. Press the switch again and use the remote controller to stop the operation.)

On twice/Off for 2

•

Reservation for calendar and clock shall be set first before operating Comfort Airflow.