Hitachi RAS-13CE9, RAC-13CE9 Installation Manual

above 50mm

above 100mm

about 400mm

about 300mm

must not bend

above 100mm

2,300mm or more

1

2

4

5

3

Maximum pipe length 15m

Minimum pipe length 5m

above 200mm

above 700mm

above 200mm

above 50mm when
installed on the
ceiling of balcony

(

)

above 100mm

above 100mm

give clearance as
wide as possible

Plug

6

HITACHI SPLIT-UNIT AIR CONDITIONER

INSTALLATION MANUAL

Indoor Unit Outdoor Unit

RAS-13CE9 RAC-13CE9

●

+ – Screwdriver●Measuring Tape●Knife

●

Saw●ø 65mm Power Drill●Hexagonal Wrench

Key ( 4mm)

●

Wrench (14, 17, 19, 22mm)

●

Gas Leakage Detector●Pipe Cutter

●

Vinyl Tape●Pliers●Flare Tool

●

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

●

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

Tools Needed For Installation Work

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.

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

!

!

WARNING

!

CAUTION

!

●

A circuit breaker should be installed depending on the mounting size of the unit. Without a circuit breaker, the
danger of electric shock exists.

●

Do not install the unit near a location where there is flammable gas. The condensing unit may
catch fire if flammable gas leaks around it.

●

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

●

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 is specified for the air conditioner. 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 units may collapse or water leakage,
electric shock and fire may occur.

●

Do not mix any coolant other than R-22 into the cooling circulation path when mounting or shifting the unit. If it
is mixed with air, the high pressure in the circulation path will rise and this may result in broken copper pipes or
faults.

THE CHOICE OF MOUNTING SITE (Please note the following matters and obtain permission from customer before installation).

WARNING

!

●

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

WARNING

!

●

The outdoor unit must be mounted at a location which can sup­port heavy weight. Otherwise, noise and vibration will increase.

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, television and inverter
type fluorescent lamp.

●

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

●

The installation height of indoor unit must be 2.3m or more in a
non public area.

CAUTION

!

●

Do not expose the unit under direct sunshine or rain. Besides,
ventilation must be good and clear of obstruction.

●

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

●

The clearances of the unit from top, left, right and front are specified
in figure below. At least three of the above sides must be open
air.

●

Be sure that the hot air blown out of the unit and noise do not
disturb the neighbourhood.

●

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

●

The location must be convenient for water drainage.

●

Place the outdoor unit and its connection wire at least 1m away
from the antenna or signal line of television, radio or telephone.
This is to avoid noise interference.

●

Do not install outdoor unit facing strong wind direction. It may
damage the fan motor.

INDOOR UNIT

Names of Indoor Components

QtyNo. Item

The Length of Indoor Unit

Connecting Cord

Figure showing the Installation of Indoor and Outdoor Unit.

about 1.6m

about

0.9m

OUTDOOR UNIT

Drain hose

Installation of Hanger, Wall Penetration and Installation of Protection Pipe

1

CAUTION

!

●

The draining of the water container inside the indoor unit can be done from the left.
Therefore the hanger must be fixed horizontally or slightly tilted towards the side of
drain hose. Otherwise, condensed water may overflow the water container.

Direct Mounting On The Wall

●

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

Wall Penetration and Installation of Protection Pipe

●

Drill a ø 65mm 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.

Procedures of Installation and Precautions

●

Procedures to fix the hanger.

1.Drill holes on wall. 2. Push plug into the holes. 3. Fix the hanger on wall
(As shown below) (As shown below) with 4.1 x 32 screw

(As shown in figure below)

●

Procedures to fix the holder of remote controller.

1.Drill holes on wall. 2. Push plug into the holes.
(As shown below) (As shown below)

Installation of the Indoor Unit

2

VERTICALLY DOWNWARD PIPING

Preparation

●

Connect connecting cord.

●

Pull out the pipe, connecting cord and drain
hose.

Installation

●

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.

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.

!

CAUTION

HORIZONTAL PIPING

Preparation

Change of Drain Hose and Installation Procedures.

●

Exchange the location of drain hose and drain cap during horizontal piping as shown
in figure below. Be sure to plug in the drain hose until the insulating material folds upon
itself.

●

Please use pliers to pull out the drain cap.
(This is an easier way to remove the drain cap).

Drain hose

Drain cap

Drain cap

●

Remove the cap for drain hose installation

Drain cap

Please insert
until here

Drain hose

Please insert
until here

!

CAUTION

Condensed water may leak out if not inserted properly.

HORIZONTAL & DOWNWARD PIPING – MAKING OPENINGS

●

During horizontal or downward piping, use a knife to cut openings as
shown in figure. Then smoothen the edges of openings with a file.

INSTALLATION OF REFRIGERATING PIPES AFTER CONNECTION

●

The refrigerating pipes should be adjusted to fit
into the hole on the wall and then ready for further
connection.

●

The terminals of 2 connected pipes must be covered
with insulator used for terminal connection. Then
the pipes are wrapped with insulation pipe.

●

Connect the connecting cord.

●

After adjustment, fit the connecting cord and pipes
into the space available under the indoor unit.

!

CAUTION

●

The rubber strap used for
fixing the insulator should
not be tied with great force.
Otherwise, this will damage
heat insulation and causes
water condensation.

Pipe

Rubber strap tied with great force

Insulation pipe (must be wrapped with
vinyl tape at every 120mm).

THE CONNECTION OF REFRIGERATING PIPE DURING THE
INSTALLATION OF INDOOR UNIT

Preparation To Install Refrigerating Pipes

!

CAUTION

●

Please fix in the plastic
core after flaring to avoid
plastic chips entering the
pipes.

below

5mm
Please bend at a small
radius to form an arc

CAUTION

!

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. (Carelessness may result in water leakage.)

!

CAUTION

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

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.

!

CAUTION

●

Refrigerating pipes and connecting cord must be
tied together.

●

The front part of the refrigerating pipes are
at locations marked with “

 ” symbol.

Installation of Drain Hose

3

Installation

Hang the indoor unit onto the hanger. Use the temporary stand
at the back of the indoor unit to push its lower part 15cm
forwards.

●

Place the drain hose through the hole on the wall.

●

Insulate the connecting portion of refrigerating pipe with
insulator.

●

Wrap the refrigerating pipes with insulation pipe.

●

Connect the connecting cord.

●

After adjustment, the connecting cord and refrigerating pipes
are placed into the space available under the cooling unit.

●

The projection of indoor unit must hook to the hanger.

2~5mm

Protection
pipe

Outdoor

Indoor

Seal with
putty

Sleeve of
protection
pipe

WALL

INDOOR UNIT

about 15cm

Projection

Temporary stand

Hook

Openings

FOR SERVICE PERSONNEL ONL Y

● The difference in height

between the indoor and
outdoor unit should be
kept below 5m.

● 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.

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

inner diameter ø 16mm

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

Be sure to
completely
seal any
gap with
putty.

Direction of Piping

Dimension of Mounting Stand

of the outdoor unit

(unit : mm)

There are 4 directions
allowed, namely, horizontally
perpendicular to the unit,
vertically down from right,
horizontally out from right and
horizontally out to left.
Don't form the piping
downward at the left of the unit.

External dimension of

indoor unit

160mm

160mm

80mm

860mm

40mm

45mm

30mm

Drain Hose

45mm

298mm

Level

Line

Hole for
pipe

Mark

Screw for Mounting plate

Please use more
than 4 screws.

Mounting
Plate

32mm

19mm

Wall

1 Hanger

2 Screw

Plug

Wall

above 50mm

Ceiling

4.1 x 32 Screw

Wall

Remote
Control
Holder

5 Screw

Plug

3

Connecting cords,
pipe and drain hose
must be tied together
with Vinyl tape.

Hanger

Hook

Refrigerating
Pipe

Connecting
Cord

Drain Hose

Protection
Pipe

Lift the body
of the unit
upwards and
then force
it downwards.

Hanger

Projection

Pipe

Connecting cord

Drain hose

Pipe

Insulation pipe

0.70m

Bending
upwards

Condensed
water pond

Ditch

Condensed
water pond

20

Cut away shaded
portion, and finish
the edge of the
opening so that
there is no burr.

Connection

Horizontally
perpendicular
to the unit

Connected
section

Connecting cord

Drain hose

Protection

pipe

Refrigerating pipes

Connecting cord

Heat insulation
pipe

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

<

I699: A

>

Pipe
support

Pull up the pipe after
bending downward

●

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

Hanger

1

Screw for holder of
Remote Controller

(3.1x16)

AAA Size Battery

Screw for Hanger

Holder for Remote
Controller

(4.1x32)

Remote Controller

Purifying Filter

6

1

2

2

1

1

57

12
35

120

500

320

10

35

(10)

340

mounting stand

!

CAUTION

•

The installation height

of indoor unit must be

2.3m or more in a
non public area.

1

2

3

4

5

6

7

!

CAUTION

In case the pipe length is more than
8m, add refrigerant R22 at 20 grams
per every meter exceeds. However,
pipe length shall not exceed 15m.

RAS-13CE9/RAC-13CE9 (1) EN 24/3/05, 12:56 PM1

OUTDOOR UNIT

●

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.

●

Open the side plate by unscrewing the screws as shown below.

Removal Of Air From The Pipe And Gas Leakage Inspection

Gas Leakage Inspection

Please use gas leakage detector to check if leakage
occurs at the connection of Flare nut as shown on
the right.

If gas leakage occurs, further tighten the connection
to stop leakage.

FINAL ST AGE OF INST ALLA TION

Insulation And Maintenance Of Pipe Connection

1

●

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 enchance 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.

Installation Of Remote Controller

2

Power Source And Operation Test

3

●

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 florescent 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.

Power Source

CAUTION

!

●

Please use a new socket. Accident may occur due to the use of old
socket because of poor contact.

●

Please plug in and then remove the plug for 2 – 3 times. This is to
ensure that the plug is completely plugged into the socket.

●

Keep additional length for the power cord and do not render the
plug under external force as this may cause poor contact.

●

Do not fix the power cord with U-shape nail.

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.

Insulation material for pipe connection

Sleeve of
protection pipe

Putty

<

I699: A

>

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.

3

Procedures of using Vacuum Pump for Air Removal

As shown in figure on the right, remove
the cap of valve head and valve core
and then connect them to the vacuum
pump and manifold valve.

Fully tighten the “Hi” shuttle of the
manifold valve and completely unscrew
the “Lo” shuttle. Run the vacuum pump
for about 10–15 minutes, then completely
tighten the “Lo” shuttle and switch off
the vacuum pump.

2

Completely unscrew the spindle of the
service valve (at 2 places) in anti­clockwise direction to allow the flow of
coolant (using Hexagonal Wrench key).

3

Remove the Charge hose and tighten
the cap of valve head. The task is then
completed.

4

1

Preparation of Pipe

1

●

Use a pipe cutter to cut the copper pipe.

●

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.

Pipe Connection

2

INSTALLA TION OF REFRIGERA TING PIPES AND AIR REMO VAL

CAUTION

!

Outer

diameter

of pipe

6.35 (1/4")

12.7 (1/2")

Valve head cap

Valve core cap

Torque N.m

(kgf

●

cm)

13.7 – 18.6 (140 – 190)

44.1 – 53.8 (450 – 550)

19.6 – 24.5 (200 – 250)

12.3 – 15.7 (125 – 160)

Copper pipe

Trimming tool

Outer

Diameter (ø)

6.35 (1/4")

12.7 (1/2")

Imperial flaring tool

0.8 – 1.5

1.0 – 2.0

Rigid flaring tool

0 – 0.5

0 – 1.0

A (mm)

Small diameter

side

Big diameter

side

AIR REMOVAL

Remote

Controller

Holder for
Remote Controller

Screw (2 pieces)

WARNING

●

You may not be able to close the side cover due to the
connecting cord, under such situation, please press against
the wall of side cover to fix it.

●

Be sure that the hooks (2 places) are plugged in.
Otherwise, water leakage may occur and this causes short
circuit or faults.

●

The naked part of the wire core should be 10 mm and the insulated part of the wire must be push into the terminal for
3 – 4 mm. Then try to pull the individual wire to check if the contact is tight. Improper insertion may burn the terminal.

●

Be sure to use only wire specified for the use of air-conditioner.

●

Please refer to the installation manual for wire connection and the wiring technique should meet the standards of electrical
installation.

How to Remove the Front
Cover

●

Open the cover and remove the screw.

●

After open the front panel, remove the screw and open
the
cover , disconnect the wire connector .

●

Remove the filter, release the axis by pulling the center
portion of front cover in the direction of arrow .

●

Push vertical air deflector handle to the right or left side.

●

After raise the front cover from bottom side as , release
the front cover by pull the right or left sides as .

How to Install the Front Cover

●

Insert the two hooks at the upper side certainly.

●

Open Front Panel, push the center down in the direction
of the arrow to insert the axis at the center of the front
cover into the hook at the outlet frame.

●

Connect the wire connetor , fixed the screw and cover

and .

Checking for the electric source
and the voltage range

●

Before installation, the power source must be checked and
necessary wiring work must be completed. To make the
proper wiring capacity, use the wire gauges list below for the
lead-in from a pole transformer and for the wiring from a switch
board of fuse box to the outlet in consideration of the locked
rotor current.

●

Investigate the power supply capacity and other
electrical conditions at the installation 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 outlet. In localities where electrical conditions
are poor, use of a voltage regulation is
recommended.

USE 15A time delay FUSE IMPORTANT

Wire length

up to 16m
up to 10m
up to 15m
up to 25m
up to 42m

Wire gauge

1.6mm (B.S. 14)

2.0mm (B.S. 12)

2.6mm (B.S. 10)

3.2mm (B.S. 18)
14mm

2

(B.S. 16)

IMPORTANT

●

THIS APPLIANCE MUST BE EARTHED.

Procedures of Wiring

●

Connect the electrical wiring between the indoor and outdoor unit as shown in below Fig.
Never connect the wiring by mistake.

●

The connection cord must be fixed by the band which is located on the electrical box.

Wiring Of The Outdoor Unit

●

Please remove the side cover for wire connection.

!

WARNING

!

CONNECTION OF POWER CORD

A

Die

Die

Copper pipe

Wrench

Torque
wrench

Flare nut

Lo

Hi

Meter showing pressure

Manifold valve

Vacuum pump

Charge
hose

When pumping starts, slightly loosen
the flare nut to check of air sucked in.
Then tighten the flare nut.

When the meter reaches –101KPa (–76cmHg)
during pumping, fully tighten the shuttle.

The body of
service valve

Cap of

valve core
Hexagonal
Wrench Key

Cap of valve head

Cap of valve head

CAUTION

!

In case of removing Flare nut of a cooling unit, first remove a nut of
small diameter side, or else seal cap of big diameter side will fly out.

●

Please be careful when bending the copper pipe.

●

Applied frozen grease to the connection points and then screw in manually. After that,
use a torque wrench to tighten the connection.

WARNING

!

Power supply shall be connected at the rated voltage, otherwise the unit will be broken or could not
reach the specified capacity.

Detail of cutting the connecting cord

To remove the connecting wires
for the indoor unit, please remove
the low cover panel in front of
the unit.

A

B

A

B

(L) Brown

(N) Blue

Terminal Board

Line Cord

Terminal Board

Green & Yellow

Green &

Yellow

Outdoor UnitIndoor Unit

Indoor

Unit

Outdoor

Unit

GRN + YEL

10mm

30mm

30mm

10mm

GRN + YEL

70mm

35mm

10mm

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

Connect the
earth cord

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

Earth terminal

B

A

AB

Wiring Of The Indoor Unit

●

For wire connection of the Indoor unit, you need to remove front panel and electrical cover.
Method to remove front panel

●

Refer to “How to Remove The Front Cover”.

Method to remove electrical cover

●

Remove the screw and electrical cover.

●

Insert the connecting cord (A, B) from the bottom of unit.

●

Fixed the wire to terminal wires firmly as shown in figure at right side.

AUTO
RESTART
SWITCH

Electrical cover

Screw

CAUTION

!

Please make sure to remove all spacers inside the unit.

●

Open the Top, Back and Side cover of the unit.

●

Pull out the spacers inside.
(Spacers are only for transportation purpose).
If not remove, vibration and noise will occur.

Top cover

Back cover

Side cover

1

6 7

2

3

4

5

7

1 6

1

2

1

3

4

Screw

Cover

Front panel

Front Cover

Vertical Air Deflector Handle

Screw

7

6

5

5

1

1

2

2

RAS-13CE9/RAC-13CE9 (2) EN 24/3/05, 2:04 PM1