Screw for Mounting Plate
( 4 . 1 x 3 2 )
HITACHI SPLIT-UNIT AIR CONDITIONER
INSTALLATION MANUAL
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+ – Screwdriver
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Measuring Tape
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Knife
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Saw
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ø 65mm Power Drill
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Allen Key ( 4mm)
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Wrench (14, 17, 19, 22mm)
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Gas Leakage Detector
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Pipe Cutter
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Plastic Tape
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Pliers
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Flare Tool
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Carefully read through the procedures of proper
installation before starting installation work.
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The sales agent should inform customers regarding
the correct operation of installation.
Tools Needed For Installation Work
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.
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
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Be sure to use the earth line. Do not place earth line near gas or water pipes, lightning conductor
and the earth line of telephone. Improper earthing may cause electric shocks.
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A circuit breaker should be installed depending on the mounting size of the unit. Without a circuit breaker, the
danger of electric shock exists.
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Do not install the unit near a location where there is ammable gas. The outdoor unit may
catch re if ammable gas leaks around it.
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Please ensure smooth ow of water when installing the drain hose.
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Please request your sales agent or quali ed technician to install your unit. Water leakage, short circuit or re
may occur if you do the installation work yourself.
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Please observe the instructions stated in the installation manual during the process of installation. Improper
installation may cause water leakage, electric shock and re.
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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.
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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 speci ed for the air conditioner. A short circuit
and re may occur due to the use of low quality wire or improper work.
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Be sure to use the speci ed 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 re.
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Please use the speci ed components for installation work. Otherwise, the units may collapse or water leakage,
electric shock and re may occur.
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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
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The unit should be mounted at stable, non-vibratory location
which can provide full support to the unit.
WARNING
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The outdoor unit must be mounted at a location which can support
heavy weight. Otherwise, noise and vibration will increase.
CAUTION
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No nearby heat source and no obstruction near the air outlet is
allowed.
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The clearance distances from top, right and left are speci ed in
gure below.
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The location must be convenient for water drainage and pipe
connection with the Outdoor unit.
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To avoid interference from noise please place the unit and its
remote controller at least 1m from the radio, television and inverter
type uorescent lamp.
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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.
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The installation height of indoor unit must be 2.3m or more in a
non public area.
CAUTION
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Do not expose the unit under direct sunshine or rain. Besides,
ventilation must be good and clear of obstruction.
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The air blown out of the unit should not point directly to animals
or plants.
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The clearances of the unit from top, left, right and front are
speci ed in gure below. At least three of the above sides must
be open air.
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Be sure that the hot air blown out of the unit and noise do not
disturb the neighbourhood.
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Do not install at a location where there is ammable gas, steam,
oil and smoke.
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The location must be convenient for water drainage.
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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
The Length of Indoor Unit
Power Cord
Do not alter the power cord.
Direction of Piping
Figure showing the Installation
of Indoor and Outdoor Unit
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The difference in height
between the indoor and
outdoor unit should be
kept max. 10m.
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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.
T h e r e a r e 4 d i r e c t i o n s
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.
<
IA667: B
>
Screw for Remote
Controller
( 3 . 5 x 1 8 )
AAA Size Battery
Mounting Plate
Qty
No.
Component’s Name
1
6
2
2
Remote Controller
!
Indoor Unit
Outdoor Unit
RAS-E10CZ
In case the pipe length is more than 8m, add refrigerant R22 at
10 gram per every meter exceeds. However, pipe length shall
not exceed 15m.
CAUTION
1
2
3
4
5
6
1
Installation of Hanger, Wall Penetration and Installation of Protection Pipe
1
CAUTION
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The draining of the water container inside the indoor unit can be done from the
left. Therefore the hanger must be xed horizontally or slightly tilted towards the
side of drain hose. Otherwise, condensed water may over ow the water container.
Direct Mounting On The Wall
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Please use hidden beams in the wall to hold the hanger.
Wall Penetration and Installation of Protection Pipe
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Drill a ø 65mm hole on
wall which is slightly tilted
towards the outdoor side.
Drill the wall at a small
angle.
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Cut the protection pipe
according to the wall
thickness.
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Empty gap in the sleeve
of protection pipe should
be completely sealed with
putty to avoid dripping of
rain water into the room.
Installation of the Indoor Unit
2
VERTICALLY DOWNWARD PIPING
Preparation
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Connect connecting cord.
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Pull out the pipe, connecting cord and drain hose.
Installation
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The upper part of the Indoor unit is hanged on the hanger.
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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
i n s t a l l a t i o n m a y c a u s e
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
gure below. Be sure to plug in the drain hose until the insulating material folds upon itself.
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Please use pliers to pull out the drain cap.
(This is an easier way to remove the drain cap).
INSTALLATION OF REFRIGERATING PIPES AFTER CONNECTION
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The refrigerating pipes should be adjusted to t
into the hole on the wall and then ready for further
connection.
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The terminals of 2 connected pipes must be covered
with insulator used for terminal connection. Then the
pipes are wrapped with insulation pipe.
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Connect the connecting cord after removing electrical
cover. (Refer to “CONNECTION OF POWER CORD”)
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After adjustment, t the connecting cord and pipes
into the space available under the indoor unit. Use
holder to hold them tight.
CAUTION
●
The rubber strap used for
xing the insulator should
not be tied with great force.
Otherwise, this will damage
heat insulation and causes
water condensation.
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Holder can be attached at the either of 2 places.
Please select the easier position.
THE CONNECTION OF REFRIGERATING PIPE DURING THE
INSTALLATION OF INDOOR UNIT
Preparation To Install Refrigerating Pipes
CAUTION
●
Please x in the plastic core
after aring 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 ow 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 bend.
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.
Unless it seals completely,
any air with high humidity
flows from outdoor and
any dew may drop.
WARNING
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The refrigerating pipes and connecting cord
transform and are attached.
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The end 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.
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Place the drain hose through the hole on the wall.
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Wrap the refrigerating pipes with insulation pipe after
connecting refrigerating pipe.
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Connect the connecting cord after removing electrical cover.
(Refer to “Connection of Power Cord”)
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After adjustment, the connecting cord and refrigerating pipes
are placed into the space available under the Indoor unit.
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The projection of Indoor unit must hook to the hanger.
INDOOR UNIT
HOW TO REMOVE INDOOR UNIT
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Push up the (PUSH) sections at the
bottom of the indoor unit and pull the
bottom plate towards you. Then the
claws are released from the stationary
plate.
(The (PUSH) sections are indicated
by 2 arrows in the right gure)
CAUTION
Condensed water may leak out if not inserted properly.
HORIZONTAL & DOWNWARD PIPING – MAKING OPENINGS
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During horizontal or downward piping, use a knife to cut
openings as shown in gure. Then smoothen the edges of
openings with a le.
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Turn the piping while holding down the lower
portion of pipe-support by hand.
Heat insulation pipe
Refrigerating pipe
Pull this to the
front during the
connection of
refrigerating pipes
to ease task.
RAC-E10CZ
1
Holder
Dimension of Mounting Stand
of the Outdoor unit
Procedures of Installation and Precautions
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Procedures to x 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 gure below)
●
Procedures to x the holder of remote control.
1. Drill holes on wall.
2. Push plug into the holes.
(As shown below)
(As shown below)
Connecting
cord
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INS RAS-E10CZ (EN1) 1
6/13/13 3:19 PM
