HITACHI SPLIT-UNIT AIR CONDITIONER
INSTALLATION MANUAL
Indoor Unit
Outdoor Unit
RAS-E10CBT RAC-E10CBT
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 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 speci
fi
ed in
fi
gure 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
fl
uorescent 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, front and back
are speci
fi
ed in
fi
gure 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
fl
ammable 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
Qty
No.
Item
The Length of Indoor Unit
Connecting Cord
Figure showing the Installation of Indoor and Outdoor Unit.
OUTDOOR UNIT
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
fi
xed horizontally or slightly tilted towards the
side of drain hose. Otherwise, condensed water may over
fl
ow 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 to avoid
dripping of rain water into
the room.
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
fi
gure 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).
●
Remove the cap for
drain hose installation
!
CAUTION
Condensed water
may leak out if not
inserted properly.
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
INDOOR UNIT
FOR SERVICE PERSONNEL ONLY
●
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).
Be sure to
completely
seal any gap.
Direction of Piping
Dimension of Mounting Stand
of the outdoor unit
(unit : mm)
<
IA843: A
>
Hanger
1
Screw for holder of
Remote Controller
( 3 . 1 x 1 6 )
AAA Size Battery
Screw for Hanger
Holder for Remote
Controller
( 4 . 1 x 3 2 )
Remote Controller
6
1
2
2
1
1
2
3
4
5
6
WARNING
!
CAUTION
!
●
A circuit breaker or fuse (10A 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
fl
ammable gas. The outdoor unit may
catch
fi
re if
fl
ammable gas leaks around it.
●
Please ensure smooth
fl
ow 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 quali
fi
ed technician to install your unit. Water leakage, short circuit or
fi
re 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
fi
re.
●
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 speci
fi
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
fi
re.
●
Please use the speci
fi
ed components for installation work. Otherwise, the units may collapse or water leakage, electric shock
and
fi
re may occur.
●
Be sure to use the speci
fi
ed piping set for R22. 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
fi
re, 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
fi
re in the fan-driven heater, space heater, etc., a poisonous gas may occur.
●
Unauthorized modi
fi
cations to the air conditioner may be dangerous. If a breakdown occurs please call a quali
fi
ed air
conditioner technician or electrician. Improper repairs may result in water leakage, electric shock and
fi
re, etc.
Purifying Filter
1
7
T h e r e a r e 6 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,
h o r i z o n t a l l y o u t t o l e f t ,
horizontally out to right,
vertically down from left.
Don’t form the piping downward
at the left of the unit.
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
!
The refrigerant piping should
be insulated with the enclosed
insulation pipe. (If the insulator
is insufficient, please use
commercial products).
●
+ –
Screwdriver
●
Measuring Tape
●
Knife
●
Saw
●
Pipe Cutter
●
Hexagonal Wrench Key (
4mm)
●
Power Drill (ø 65mm ~ ø 80mm)
●
Vacuum Pump
●
Pliers or Wrench
●
Torque Wrench
●
Vacuum
Pump Adaptor
●
Flare Tool
●
Gas Leakage Detector
●
Manifold Valve
●
Charge Hose
●
Reammer
●
File
●
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
Procedures of Installation and Precautions
●
Procedures to
fi
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
fi
gure below)
●
Procedures to
fi
x the holder of remote controller.
1. Drill holes on wall.
2. Push plug into the holes.
(As shown below)
(As shown below)
INSTALLATION OF REFRIGERATING PIPES AFTER CONNECTION
●
The refrigerating pipes should be adjusted to
fi
t
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 removing electrical
cover. (Refer to “CONNECTION OF POWER CORD”)
●
After adjustment,
fi
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
fi
xing the insulator should
not be tied with great force.
Otherwise, this will damage
heat insulation and causes
water condensation.
●
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
fi
x in the plastic core
after
fl
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
fl
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.
●
The refrigerating pipes and connecting cord
arrangement are attached.
●
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. (Shown as right
fi
gure)
●
Place the drain hose through the hole on the wall.
●
Wrap the refrigerating pipes with insulation pipe after
connecting refrigerating pipe.
●
Connect the connecting cord after removing electrical cover.
(Refer to “Connection of Power Cord”)
●
After adjustment, the connecting cord and refrigerating pipes
are placed into the space available under the Indoor unit.
●
The projection of Indoor unit must hook to the hanger.
Heat insulation pipe
Connecting
cord
Refrigerating pipe
Pull this to the front
during the connection
of refrigerating pipes
to ease task.
!
!
!
!
