background image

2,300mm or more

30m

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

7

Screw for Mounting Plate

( 4 . 1 x 3 2 )

HITACHI SPLIT-UNIT AIR CONDITIONER

INSTALLATION MANUAL

 +  –  Screwdriver   

 Measuring Tape   

 Knife

Saw  

 ø 65mm Power Drill  

 Allen Key (      4mm)

Wrench (14, 17, 19, 22mm)

Gas Leakage Detector    

 Pipe Cutter

Plastic 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.

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 sup-
port 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.

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.

INDOOR UNIT

Names of Indoor Components

Direction of Piping

Figure showing the Installation
of Indoor and Outdoor Unit.

The difference in height
between the indoor and
outdoor unit should be kept
below 20m.

The connecting pipe, no
matter big or small, should all
be insulated with insulation
pipe and then wrapped with
plastic 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 (commer-
cial product).

OUTDOOR UNIT

Be sure to
completely
seal any
gap with
putty.

There are 6 directions
allowed, namely, horizontally
perpendicular to the unit,
vertically down from right,
horizontally out from right and
horizontally out to left.

Installation of Mounting Plate, 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 mounting plate 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 mounting plate.

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 mounting plate.

1. Drill holes on wall.

2.Fix the mounting plate on

(As shown below)

  wall with 4.1 x 32 screw
  (As shown in figure below)

Procedures to fix the holder of remote control.

1. Drill holes on wall.

(As shown below)

   Installation of the Indoor Unit

2

VERTICALLY DOWNWARD PIPING

  Preparation

Connect power cord.

Pull out the pipe, power cord and drain hose.

  Installation

The upper part of the indoor unit is hanged on the
mounting plate.

The projection at the lower part of the indoor unit is
hooked onto the mounting plate.

Please pull the lower part
of the indoor unit
outwards to check if the
unit is hooked onto the
mounting plate. 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).

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 COOLANT PIPES AFTER CONNECTION

The coolant 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.

Connect the power cord.

After adjustment, fit the power 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.

THE CONNECTION OF COOLANT PIPE DURING THE
INSTALLATION OF INDOOR UNIT

  Preparation To Install Coolant Pipes

CAUTION

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

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.

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IA534: A 

>

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

Coolant pipes and power cord must be tied together.

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

 ” symbol.

   Installation of Drain Hose

3

  Installation

Hang the indoor unit onto the mounting plate. 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 coolant pipe with insulator.

Connect the power cord.

After adjustment, the power cord and coolant pipes are placed
into the space available under the indoor unit.

The projection of indoor unit must hook to the mounting
plate.

INDOOR UNIT

Screw for holder of
Remote Controller

( 3 . 1 x 1 6 )

AAA Size Battery

Holder for Remote
Controller

Mounting Plate

Qty

No.

Component’s Name

1

6

1

2

2

Remote Controller

Purifying Filter

!

!

20

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

Connection

Horizontally
perpendicular
to the unit

Pipe

Power cord

Drain hose

!

Pipe

Rubber strap tied with great force

Pipe

!

0.85m

below
5mm

Please bend at a small
radius to form an arc

about 15cm

Projection

Temporary stand

Hook

!

!

Bending
upwards

Stagment
water

Drain

Stagment
water

Openings

Drain cap

Please insert
until here

Drain hose

Please insert
until here

Mounting Plate

Hook

Coolant pipe

Power Cord

Drain Hose

Protection
Pipe

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

Mounting
Plate

Projection

Power line, pipe and
drain hose must be
tied together with
plastic tape.

!

External dimension of

indoor unit

160mm

180mm

80mm

1030mm

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

!

2~5mm

Protection

pipe

Outdoor

Indoor

Seal with

putty

Sleeve of

protection

pipe

WALL

!

!

!

!

!

Drain hose

Drain cap

CAUTION

Condensed water may leak out if not inserted properly.

!

Pipe 
support

Pull up the pipe after
bending downward

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

Indoor Unit

Outdoor Unit

RAS-60YHA2

RAC-60YHA2

+

1

2

3

4

5

6

7

1

1

WARNING

!

CAUTION

!

A circuit breaker or fuse (20A time delay) must be installed. Without a circuit breaker or fuse the danger of electric shock
exists.
A main switch with a contact gap of more than 3mm has to be installed in the power supply line to the outdoor unit.

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.

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

Piping shall be suitable supported with a maximum spacing of 1m between the supports.

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 power cables approved by the authorities of your country.

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.

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.

3

Bush

Names of Outdoor Components

Qty

No.

Item

Drain Pipe

1

9

10

Bush

1

11

In case the pipe length is more than 20m, add refrigerant R410A
at 10 gram per every meter exceeds. However, pipe length shall
not exceed 30m.

CAUTION

Dimension of Mounting Stand

of the Outdoor unit

(unit : mm)

57

12
35

198

508

320

10

20

(10)

340

mounting stand

Insulation pipe

1

8

HOW TO REMOVE INDOOR UNIT FROM HANGER

Pull down PULL section on the bottom of indoor
unit and pull it towards you, then claws are
released from hanger. (Indicated by 2 arrows in
the drawing on the right.)

When bottom face of indoor unit cannot be
pulled due to obstacles, etc. Remove front cover,
insert screw driver into circle hole, pull claws
down and pull indoor unit towards you.

Please check how to remove and attach front
cover in this instruction manual.

Screw driver

Claw of indoor unit

Circle hole

2

1

Connected
section

Holder

Connecting cord

Drain hose

Protection

pipe

Heat insulation pipe

Connecting
cord

Refrigerating pipe

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

Ins RAC-60YHA2 (1)

12/24/08, 10:49

1

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