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.
THE CHOICE OF MOUNTING SITE
(Please note the following matters and obtain permission from customer before installation).
The unit should be mounted at stable, non-vibratory location which can provide
full support to the unit.
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Figure showing the Installation
of Indoor and Outdoor Unit.
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Indoor Unit
Outdoor Unit
WARNING
SAFETY PRECAUTION
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Read the safety precautions carefully before operating the unit.
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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.
This sign indicates prohibition.
CAUTION ....... Improper installation may result in serious consequence.
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 customers to keep this installation manual together with the instruction manual.
The Length of Indoor Unit
Power Cord
Do not alter the power cord.
Direction of Piping
about 1.6m
about
0.9m
Cut away shaded
portion, and finish
the edge of the
opening so that
there is no burr.
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.
5
6
Dimension of Mounting Stand
of the outdoor unit
(unit : mm)
Items & are included in the
package of the outdoor unit.
6
7
1
Screw for Mounting Plate
( 4 . 1 x 3 2 )
Names of Indoor Components
AAA Size Battery
Mounting Plate
Qty
No Component’s Name
1
2
Remote Controller
1
2
3
4
5
1
Bush
Drain pipe
Heat insulating materials
1
RAS-X18HAK
RAC-X18HAK
+
10
2
12
320
299
500
792
340
Horizontally
backward
Piping configuration may be
in six different directions:
direct rear piping, left or right
downward piping and left
or right sideways piping.
200mm
200mm
50mm
Above 50 mm when installed
on the ceiling of balcony
Heating efficiency will be
enhanced if the space below the
outdoor unit is closed so that
no air passes through.
(Procure the material locally.)
For outdoor unit installation, allow at least
2 sides of space around the unit to ensure
ventilation flue.
Installation of Mounting Plate, Wall Penetration and Installation of Protection Pipe
1
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.
(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.
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.
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
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.)
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.
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
Pull this to the front
during the connection
of coolant pipes to
ease task.
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.
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Pipe
Power cord
Drain hose
Pipe
Rubber strap tied with great force
Pipe
below
5mm
Please bend at a small
radius to form an arc
about 15cm
Projection
Temporary stand
Hook
Power cord
Protection
pipe
Drain
hose
Connected
terminals
of coolant
pipes
Coolant pipes
Power cord
Heat insulation
pipe
Bending
upwards
Stagment
water
Drain
Stagment
water
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.
2~5mm
Protection
pipe
Outdoor
Indoor
Seal with
putty
Sleeve of
protection
pipe
WALL
Remove the cap for drain hose installation
Drain cap
Drain hose
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.
CAUITON
CAUITON
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CAUITON
The drain hose can be installed from the lefe or right of the indoor unit.When installing
the indoor unit,the mounting board must be fixed horizontally or slightly tilted down
towards the side of drain hose.If it is tilted above the side of the drain hose,condensed
water may overflow.
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)
1
Hanger
2
Screw
Wall
above 50mm
4.1 x 32 screw
Ceiling
Plug
Drain Hose
Drain cap
Openings
1.0m
Match the end of the refrigerating pipes with the
locations marked with “
V
” symbol.
Drain hose
Drain hose
Wall hole
Wall hole
6
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E4340B
20m