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.
INDOOR UNIT
Figure showing the Installation
of Indoor and Outdoor Unit.
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 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
(commercial product).
OUTDOOR UNIT
Be sure to
completely
seal any
gap with
putty.
Installation of Mounting Plate, Wall Penetration and Installation of Protection Pipe
1
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)
wa l l with M4 x 25 screw
)
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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.
INDOOR UNIT
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
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.
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
Drain hose
Drain cap
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-X10CBK
RAC-X10CBK
+
RAS-X13CBK
RAC-X13CBK
+
RAS-X18CBK
RAC-X18CBK
+
Ins RAS-X10-13HAK
19/10/07, 9:44 AM
1
WARNING
Level
Line
Hole for
pipe
Screw for Mounting plate
Mounting
Plate
CAUITON
CAUITON
CAUITON
CAUITON
CAUITON
CAUITON
CAUITON
give clearance
as wide as possible
about 0.45m
Maximum pipe length 20m Minimum pipe length 3m
above 300mm
must not bend
above 50mm
above 250mm
above 100mm
above 200mm
above 200mm
above 100mm
above 300mm
above 700mm
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.
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
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.
about 1.6m
about
0.9m
20
Cut away shaded
portion, and finish
the edge of the
opening so that
there is no burr.
Connection
Horizontally
perpendicular
to the unit
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.
The refrigerating machine oil
is easily affected by moisture.
Use caution to prevent water
from entering the cycle.
Dimension of Mounting Stand
of the outdoor unit
(unit : mm)
500
750
50
330
310
290
500
698
45
300
282
257
6
1
Screw for Mounting Plate
Names of Indoor Components
Names of outdoor Components
AAA Size Battery
Mounting Plate
Qty
No Component’s Name
1
2
Remote Controller
Signal line
1
2
3
4
5
1
Heat insulating materials
1
External dimension of
indoor unit
wall nole
Drain Hose
Drain Hose
wall nole
X10CBK
、
X13CBK
5
(M4 x 25)
X18CBK
(M4 x 25)
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