FOR SERVICE PERSONNEL ONLY

INVERTER SYSTEM MULTI TYPE

INDOOR UNIT

INSTALLATION MANUAL

MODEL

RAF-25QH8

RAF-35QH8

RAF-50QH8

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

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

• Explanation for outdoor unit is in the “How To Use”

(Instruction Manual) that packed with outdoor unit.

Tools Needed For Installation Work

(Mark is exclusive use tool for R410A) • ª· Screwdriver

• Measuring Tape • Knife • Saw • ø65mm Power

Drill • Hexagonal Wrench Key ( 4mm) • Wrench

(14,17,22,26,27mm) Gas leakage Detector • Pipe

Cutter • Putty • Vinyl Tape • Pliers • Flare Tool

Vacuum Pump Adapter Manifold Valve Charge

Hose Vacuum Pump

SAFETY PRECAUTION

• Read the safety precautions carefully before operating the unit.

• The contents of this section are vital to ensure safety. Please pay special attention to the following sign.

WARNING .... Incorrect methods of installation may cause death or serious injury.

CAUTION ...... Improper installation may result in serious consequence.

Make sure to connect earth line.

This sign in the figures indicates prohibition.

Be sure that the unit operates in proper condition after installation. Explain to customer the proper watt of operating the unit as described in the user’s guide.

WARNING

• Please request your sales agent or qualified technician to install your unit. Water leakage, short circuit or fire may occur if you do the installation work yourself.

• Please observe the instructions stated in the installation manual during the process of installation. Improper installation may cause water leakage, electric shock and fire.

• Make sure that the units are mounted at locations which are able to provide full support to the weight of the units. If not, the units may collapse and impose danger.

• Observe the rules and regulations of the electrical installation and the methods described in the installation manual when dealing with the electrical work. Use wire which are approved official in your country. A short circuit and fire may occur due to the use of low quality wire or improper work.

• Be sure to use the specified wire 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. Improper insertion and loose contact may cause over-heating and fire.

• Please use the specified components for installation work. Otherwise, the unit may collapse or water leakage, electric shock and fire may occur.

• 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.

• Be sure to use the specified piping set for R410A. Otherwise, this may result in broken copper pipes or faults.

• When installing or removing an air conditioner, do not allow air or moisture to remain in the refrigeration cycle. Otherwise, pressure in the refrigeration cycle may become abnormally high so that a rupture may be caused.

• Be sure to ventilate fully if a refrigerant gas leak while at work. If the refrigerant gas comes into contact with fire, a poisonous gas may occur.

• After completion of installation work, check to make sure that there is no refrigeration gas leakage. If the refrigerant gas leaks into the room, coming into contact with fire in the fan-driven heater, space heater, etc., a poisonous gas may occur.

• Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a qualified air conditioner technician or electrician. Improper repairs may result in water leakage, electric shock and fire, etc.

• Be sure to connect the earth line from the power supply wire to the outdoor unit and between the outdoor and indoor unit. Improper earthing may cause electric shock.

CAUTION

• A circuit breaker must be installed in the house distribution box for the direct connected power supply wire to the outdoor unit. In case of other installations a main switch with a contact gap or more than 3mm has to be installed. Without a circuit breaker, the danger of electric shock exists.

• Do not install the unit near a location where there is flammable gas. The outdoor unit may catch fire if flammable gas leaks around it. Piping shall be suitable supported with a maximum spacing of 1m between the supports.

• Please ensure smooth flow of water when installing the drain hose.

• An IEC approved power cord should be used. Power cord type: NYM.

THE CHOICE OF MOUNTING SITE

(Please note the following matters and obtain permission from customer before installation.)

WARNING

Names of Indoor Components

No.

1

Item

Flare Insulator

Qty

1

• The unit should be mounted at stable, non-vibratory location which can provide full support to the unit.

2

Binder

2

CAUTION

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

• The clearance distances from top, right and left are specified in figure below.

• The location must be convenient for water drainage and pipe connection with the outdoor unit.

• To avoid interference from noise, please place the unit and its remote controller at least 1m from the radio and television.

• To avoid any error in signal transmission from the remote controller, please put the controller far away from highfrequency machines and high-power wireless systems.

3

Screw for Overturn

Prevention

4

(4.1 × 32)

Holder for Remote

Controller

8

1

5

Screw for holder of

Remote Controller

(3.1 × 16)

2

AAA size

6 Battery

7

Remote

Controller

2

1

Insulator

8

9

(t3 × 160 × 600)

Screw for Overturn

Prevention

(4.0 × 34)

Insulator

0

1

2

1

Bush

-

(20 × 30 × 300)

3

[Indoor unit installation]

Direction of Piping

Sheet

= 3

Purifying Filter

~ 1

(For example: Wall installation)

Above 150mm

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

Above 200mm

Above 100mm

= Sheet

Be sure to completely seal any gap with putty.

When mounting on a wall

(up to 150~500 mm from the floor surface)

- Bush

5

4

Plug (Procure locally)

6

7

1.2

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.

Indoor

Seal with putty

Protection pipe

Outdoor

Seal with putty

WALL

Sleeve of protection pipe

CAUTION

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.

2. Installation of the indoor unit

2.1

How to remove the front cover

Please refer to section for details.

If there is a baseboard

Removal and installation of front cover

Screw (3 pieces)

• If the baseboard is

5~15mm in thickness and

115mm or less in height, cut the pipe bushing to conform to the baseboard.

For sideways piping

• For right sideways piping, cut the stand’s bushing with a plastic cutter or similar tool and use a file for an attractive finish.

For floor piping

• For floor piping, cut the front cover bushing with a plastic cutter or similar tool and use a file for an attractive finish.

Cabinet

Baseboard

Cabinet

Bushing

(2 pieces on each side)

Front cover bushing

Screw (3 pieces)

Screw (2 pieces)

15

5

2.2

Drain pipe

• Make sure drain pipe slopes downward so that drain flows smoothly without being trapped in the middle.

• The drain hose (connecting port outer diameter: 16mm or 20mm, length: 500mm) is included in the indoor unit. Prepare a drain pipe as shown in the following figure.

• To prevent condensation, the indoor drain pipe should be covered with heat insulation material with a thickness of more than

10mm.

• After piping is completed, check to make sure that drain discharges smoothly. Seal the drain pipe tightly with tape to keep dirt out.

Front view Right side view

Make sure the drain hose slopes downward.

Connecting section

Drain hose

500

Drain pipe (procure locally)

(Unit: mm)

96 88

2.3

Connecting the pipe to indoor unit

• Draw in the pipes through the hole of the wall or the floor to indoor.

• Arrange the pipe shown below. In the case that large pipe and small pipe arrange to make in front and behind.

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

• The pipe should first be cut longer than the length shown below.

• The excess section of the pipe should be cut off during pipe connection.

• In the case of make a hole on the floor.

• In the case of make a hole on the wall.

Before piping.

After piping.

Small pipe

Large pipe

40 above 350

R80

WARNING

For sideways piping, do not install the drain hose sideways. Connect the drain hose so that it comes out directly.

Sideways installation of the drain hose will prevent it from sloping downward, causing water leakage. To avoid dripping, make sure to pass the drain hose under the pipe.

• Sideways piping.

Top view

Wall

Front view

(Unit: mm)

Right side view

R80

R60

Floor

Floor 170

• Remove PIPE SUPPORT.

• Insert the drain hose into the hole in the wall.

• Winding insulation pipe for drain hose and taping 4 or 5 places to fix.

• Connect the pipe to the Indoor unit.

• After completing the piping connection, cover the connector with the insulator.

• Connect the cord (follow instructions in the section “5. Connection of the connecting cord” on the reverse of this sheet).

2 Binder

1 Flare insulator

Wrap flare insulation, bind top and bottom flare insulation by binder. Wrap tape on flare insulation closely.

2 Binder

PIPE SUPPORT

Pipe

• Since there is some space between PIPE SUPPORT and the pipe, affix the insulator 0 to the PIPE SUPPORT.

As shown in the figure on the right, affix the insulator 0 to the PIPE SUPPORT to sandwich it.

0 Insulator

• After connecting the pipes and connecting cord, be sure to screw PIPE SUPPORT tightly and fix the pipes and connecting cord.

• Position the easy-to-attach side of PIPE SUPPORT (after aligning it with the pipe) to face the front and secure it with a screw. (Be sure to install PIPE SUPPORT to prevent rodents from entering the indoor unit.)

• To prevent the pipe connector from contacting the front cover, push the connector as far as it goes.

• Arrange the connecting cord, pipes and drain hose neatly and store them in the bottom section of the rear surface of the indoor unit.

PIPE SUPPORT

Hook the PIPE

SUPPORT tab in the square hole.

CAUTION

When mounting the flare insulator 1, make sure there is a space between the insulator and left of resin part. Otherwise, may cause water dripping.

Screws

PIPE SUPPORT

Mount PIPE SUPPORT so that the cylindrical portion of the drain pan passes through its hole and secure it with screws located at the right back corner.

Pipe layout of the unit rear surface

Indoor unit rear surface

Connecting cord

Pipe/drain hose layout when passing through the file in a wall

Connecting cord

Pipe

Pipe

8 Insulator

8 Insulator

Drain hose

< S826 : A >

Drain pipe

Must be installed separately.

Insulate indoor part of pipe to prevent condensation.

The indoor piping should be insulated with the enclosed insulation pipe. (If the insulator is insufficient, please use commercial products.)

1. Installation of wall penetration and installation of protection pipe

1.1

Hole position

• Make a hole on the wall such the position as shown below, in order to keep the flow for condensed water smooth.

Hole Position

In the case of making a hole on the wall.

In the case of making a hole on the floor.

65mm

Drain hose make lower than center of the hole.

55mm

3. Fixing the indoor unit

3.1 Floor Installation

1. Drill holes on wall.

(As shown below)

Wall

2. Push plug into the holes.

(As shown below)

Fixing on the wall

Fixing the base of indoor unit

• Fix the base of indoor unit on the floor with 4.1 × 32mm screws. (Right and left)

Screw

32mm

3 Screw (4.1x32)

Cabinet

3 Screw

(4.1x32)

Wall

Plug

3 Screw

(4.1x32)

Screw

3 Screw (4.1x32)

3 Screw

(4.1x32)

Fixing on the hanger

440 155

WARNING

Be sure to attach screw 3 to prevent the indoor unit from overturn.

• When fixing the indoor unit above the ground, be sure to fix an L-angle at the bottom to support it.

Case 1. Drill holes on floor.

Floor

ø4.8mm

32mm

55

2. Push plug into the holes.

3 Screw (4.1x32)

Indoor unit

ø9 rear fixing hole for anchor bolt or screw of accessory.

Plug (Procure locally)

5. Connection of the connecting cord

(1) Remove the cover of the electric box.

(2) Connect the connecting cords.

(3) Assemble the cover of electric box.

50mm

Green-and-yellow

(ground)

10mm

10mm

25mm

Connecting cord

Detail of cutting the connecting cord

Connect the earth cord

After remove the screw and cover, and put the connecting cords and fix the cover with screw.

C

D

WARNING

• 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.

WARNING

• THIS APPLIANCE MUST BE

EARTHED.

Connection of the connecting cord

Securely screw in the connecting cord so that it will not get loose or disconnect.

Tightening torque reference value: 1.2 to 1.6 N·m (12 to 16 kgf·cm)

Excessive tightening may damage the interior of the cord requiring replacement.

Connecting cord

6. Checking of drawing drain hose

(1) Connect the separate drain hose to the drain hose that is attached to the indoor unit.

(2) For keeping the smooth flowing of condensed water the drain hose should be inclined as shown in figure below.

Bad Bad Bad Bad

Condensed water pond

WARNING

Be sure that the hose is not loosely connected or bent.

Bending upwards

Condensed water pond

Ditch

CAUTION

Please ensure the smooth flow of condensed water of the Indoor unit during installation.

(Carelessness may result in water leakage.)

3.2 Wall Installation

Direct Mounting On The Wall

• Please remove 3 screws and clip which fix the stand and cabinet.

(As shown in the figure below)

(The plug can be secured diagonally with a screw as shown above.)

20mm

• Please remove the screws which fix the cabinet and hanger.

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

External dimension of indoor unit

20mm

Hanger

CAUTION

• The draining of the water container inside the Indoor unit can be done from the left. Therefore the hanger must be fixed horizontally or slightly tilted towards the side of drain hose.

Otherwise, condensed water may overflow the water container.

Level

750mm

Drain Hose

55mm

Mark

Line

Screw for Hanger

Please use more than 6 screws

Weight

Hole for pipe

Procedures of Installation and Precautions

• Procedures to fix the hanger and indoor unit.

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 and 4.0 X 34 screw.

(As shown in figure below)

Wall

Hanger

3 Screw

(4.1x32)

Plug

9 Screw

(4.0x34)

3 Screw

(4.1x32)

32mm Wall

9 Screw

(4.0x34)

4. Fix the indoor unit on the wall with 4.1x32 screw.

3 Screw

(4.1x32)

3 Screw

(4.1x32)

7. 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 fixed. The unit will beep 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 controller must be hooked onto the hook at the lower part of the holder. Push in the remote controller in the direction as shown in figure below.

Screw (2 pieces)

Remote controller

Holder for Remote

Controller

8. Final stage of installation

8.1

Insulation and maintenance of pipe connection

• The connected terminals should be completed sealed with heat insulator and then tied up with rubber strap.

• Please tie the pipe and power line together with vinyl tape as shown in the figure showing the installation of Indoor and Outdoor units. Then fix their position with holders.

• To enhance the heat insulation and to prevent water condensation, please cover the outdoor part of the drain hose and pipe with insulation pipe.

• Completely seal any gap with putty.

Sleeve of protection pipe

OUTSIDE INSIDE

Putty

Putty

8.2

Operation test

• Please ensure that the air conditioner is in normal operating condition during the operation test.

• Explain to your customer the proper operation procedures as described in the user’s manual.

• If the indoor unit does not operate, check to see that the connections are correct.

CAUTION Trial run should be conducted on one unit at a time to check for incorrect wiring of connecting cord.

3-3 Built-in Installation

1 If outlet is covered with the lattice door, room temperature may not be controlled properly. Therefore, air outlet must be open as much as possible.

2 If air deflector of air outlet is adjusted too much upward, room temperature may not be controlled properly due to the heat inside the lattice door. Therefore, the deflector must be adjusted to nearly horizontal angle.

3 If signal receiver is covered with the lattice door, signal receiving distance or range (angle) becomes smaller. Therefore, signal receiver must not be covered with the lattice door.

4 Only the vertical lattice door may be used. Be sure to use a lattice door with an open area ratio of 75% or more. If another lattice door or one with an open area ratio of less than 75% is used, maximum performance may not be obtained.

5 With a built-in installation, it may take more time to reach the set temperature after the unit is switched on.

Horizontal air deflector (Air intake)

Above

100mm

Above 150mm

Horizontal air deflector (Air outlet)

Lattice door

Above 200mm

Signal receiver

30mm

Air conditioner

CAUTION

Using the claws at the top of front cover to remove and install front cover to the cabinet. Too much force on the claws may cause breakage when removing or installing the front cover. Please follow the below procedures for removal and installation of front cover.

Removal and installation of front cover

1. Remove the front cover

Latch

Screw

Latch

Front Panel

Screw

Front Panel

1 Push the latch at both sides to open the front panel. Pull out the filter and remove 3 screws.

Upper Louver

Horizontal

Air Deflector

Front Cover

Screw

2 Lift up the front panel and latch the claws firmly at the lower part of rear of the front panel.

Then remove 3 screws.

4. Installation of refrigerating pipes and air removal

4.1

Preparation of pipe

• Use a pipe cutter to cut the copper pipe.

CAUTION

• Jagged edge will cause leakage.

• Point the side to be trimmed downwards during trimming to prevent copper chips from entering the pipe.

• Before flaring, please put on the flare nut.

Die

Die

A

• Please use exclusive tool.

Copper pipe

Copper

Trimming tool

Outer Diameter (ø)

6.35 (1/4")

9.52 (3/8")

12.7 (1/2")

A (mm) Rigid Flaring Tool

For R410A tool For R22 tool

0 – 0.5

0 – 0.5

0 – 0.5

1.0

1.0

1.0

Screw Cap

3 Take off 2 screw caps at the lower part of the horizontal air deflector and remove 2 screws. Then leave the upper louver in open position.

2. Install the front cover

Front Cover Fixing Claws (4 places)

4 Hold both sides of the lower part of front cover and pull down towards an oblique direction.

Front Cover

Claw

Cabinet

Cabinet

Cabinet

Upper Louver

4.2

Pipe connection

CAUTION

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 working.

• Please be careful when bending the copper pipe.

• Screw in manually while adjusting the center. After that, use a torque wrench to tighten the connection.

Flare nut

Wrench

Torque wrench

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, fur ther tighten the connection to stop leakage. (Use the detector provided for R410A.)

Small diameter side

Outer diameter of pipe (ø)

6.35 (1/4")

Large diameter side

Valve head cap

9.52 (3/8")

12.7 (1/2")

Small diameter side 6.35 (1/4")

9.52 (3/8")

Large diameter side

12.7 (1/2")

Valve core cap

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)

1 Set the upper louver in open position.

2 Insert the front cover fixing claws

(4 places) to the insertion groove of the cabinet and put the upper louver through to the front cover frame.

How to connect the optional parts

Front Cover

Fixing Claws

(4 places)

Horizontal

Air Deflector

(RAC Adapter, Weekly Timer Remote Control, Wired Remote Control)

•

•

•

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

Each connecting location is as below.

1 RAC Adapter: CN7

2 Weekly Timer Wired Remote Control: CN9

3 Wired Remote Control: CN9

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.

Lower Flame

3 Put the horizontal air deflector to the lower part of front cover frame and insert to the cabinet.

After fixed the front cover, fix back all the screws in order.

< S826 : A >