Hitachi RAS-DX13CET Installation Manual
● 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.
HITACHI SPLIT-UNIT AIR CONDITIONER
INSTALLATION MANUAL
Indoor Unit Outdoor Unit
RAS-DX13CET RAC-DX13CET
RAS-SX13CET
RAC-SX13CET
SAFETY PRECAUTION
!
!
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 specifi 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 and front are specifi 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.
●
Do not install the outdoor unit in a place where small animals may
build their nests. If small animal goes inside the unit and touches
the electrical parts, failure of the unit, smoke or fi re may be caused.
Request your customer to keep the surrounding of the unit is clean.
INDOOR UNIT
Figure showing the Installation of Indoor and Outdoor Unit.
OUTDOOR UNIT
FOR SERVICE PERSONNEL ONLY
● The difference in height
between the indoor and
outdoor unit should be
kept below 10m.
● 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)
WARNING
!
● Please request your sales agent or qualifi 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 specifi 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 specifi 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 specifi ed 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 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 modifi cations to the air conditioner may be dangerous. If a breakdown occurs please call a qualifi ed air
conditioner technician or electrician. Improper repairs may result in water leakage, electric shock and fi re, etc.
There are 6 directions
allowed, namely, horizontally
perpendicular to the unit,
vertically down from right,
horizontally out from right,
horizontally out to left,
horizontally out to right,
vertically down from left.
The refrigerant piping
should be insulated with the
enclosed insulation pipe. (If
the insulator is insuffi cient,
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
!
● A circuit breaker or fuse (13A) must be installed. Without a circuit breaker or fuse the danger of electric
shock exists.
The external switch shall be incorporated to completely disconnect from power supply
. It should disconnect all poles, and a
contact separation of at least 3mm must be present.
● 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.
● Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its mist fl ows to the indoor unit. The oil
will deposit on the heat exchanger, thereby reducing the indoor unit performance and may deform and in the worst case,
break the plastic parts of the indoor unit.
● 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.
CAUTION
Screw for Mounting Plate
(4.1x32)
Names of Indoor Components
Screw for holder of
Remote Controller
(3.1x16)
AAA Size Battery
Holder for Remote
Controller
Mounting Plate
QtyNo. Component’s Name
1
6
1
2
2
Remote Controller
Purifying Filter
1
2
3
4
5
6
7
1
2
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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 mounting plate must be fi xed horizontally or slightly tilted towards the
side of drain hose. Otherwise, condensed water may overfl ow 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.
INSTALLATION OF REFRIGERATING PIPES AFTER CONNECTION
●
The refrigerating 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. 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.
!
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.
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 copper
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.
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
dew may drop.
!
WARNING
●
The refrigerating pipes and connecting cord
arrangement are attached.
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.
●
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 mounting plate.
INDOOR UNIT
P
Heat insulation pipe
Connecting
cord
Refrigerating pipe
Pull this to the front
during the connection
of refrigerating pipes
to ease task.
Procedures of Installation and Precautions
●
Procedures to fi x the mounting plate.
1. Drill holes on wall. 2. Push plug into the holes. 3. Fix the mounting plate 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 control.
1. Drill holes on wall. 2. Push plug into the holes.
(As shown below) (As shown below)
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 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 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.
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Gas Leakage Inspection
Please use gas leakage detector to check if leakage occurs
at the connection of Flare nut as shown on the right.
If gas leakage occurs, further tighten the connection to stop
leakage.
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Preparation of Pipe
1
● Use a pipe cutter to cut the copper pipe.
● Jagged edge will cause leakage.
● Point the side to be trimmed downwards during trimming to prevent copper
chips from entering the pipe.
● Before fl aring, please put on the fl are nut.
Pipe Connection
2
INSTALLATION OF REFRIGERATING PIPES AND AIR REMOVAL
CAUTION
!
WARNING
● If you cannot attach the side plate due to the connecting
cord, press the connecting cord in direction to the front
panel to fi x it.
● Be sure that the hooks of the side plate is fi xed in certainly.
Otherwise water leakage may occur and this causes short
circuit or faults.
Checking for the electric source and the
voltage range
● Before installation, the power source must be checked and necessary wiring work
must be completed. To make the wiring capacity proper, use the wire gauges list
below for the lead-in from a pole transformer and for the wiring from a switch
board of fuse box to the outlet in consideration of the locked rotor current.
● Investigate the power supply capacity and other electrical
conditions at the installation location.
Depending on the model of room air conditioner to be installed,
request the customer to make arrangements for the necessary
electrical work etc.
The electrical work includes the wiring work up the outlet.
In localities where electrical conditions are poor, use of a
voltage regulation is recommended.
● Install outlet for the room air conditioner within the reaching
range of the line cord.
● THIS APPLIANCE MUST BE EARTHED.
Procedures of Wiring
Wiring Of The Outdoor Unit
● Please remove the side plate for wire connection.
!
WARNING
!
CONNECTION OF POWER CORD
WARNING
!
Power supply shall be connected at the rated voltage, otherwise the unit will be broken
or could not reach the specifi ed capacity.
Detail of cutting the connecting cord
To remove the connecting wires for
the indoor unit, please remove the
low cover panel in front of the unit.
Earth terminal
Wiring Of The Indoor Unit
●
For wire connection of the Indoor unit, you need to remove front panel and
electrical cover.
Method to remove front panel
●
Please refer to Instruction Manual – “Removing the Front Panel” under “Cleaning
of Front Panel”.
● The naked part of the wire core should be 10 mm and fi x it to the terminal tightly. Then try
to pull the individual wire to check if the contact is tight. Improper insertion may burn the
terminal.
● Be sure to use only power cables approved from the authorities in your country. For example
in Germany: Cable type: NYM 3x1.5mm2, (fuse = 16A time delay)
● Please refer to the following for wire connection to the terminals of the units. The cabling
must meet the standards of electrical installation.
● There is a AC voltage of 220V between the L and N terminals. Therefore, before servicing,
be sure to remove the plug from the AC outlet or switch off the main switch.
IMPORTANT
13A
Circuit Breaker
Removal Of Air From The Pipe And Gas Leakage Inspection
3
Procedures of using Vacuum Pump for Air Removal
AIR REMOVAL
When the meter reaches - 101KPa (-76cmHg)
during pumping, fully tighten the shuttle.
Lo Hi
Meter showing pressure
Closed
Manifold valve
Vacuum
pump
Valve
Charge hose
Valve
When pumping starts, slightly loosen the
fl are nut to check of air sucked in. Then
tighten the fl are nut.
As shown in right fi gure, remove the cap of
valve core. Then, connect the charge hose.
Remove the cap of valve head. Connect the
vacuum pump adapter to the vacuum pump
and connect the charge hose to the adapter.
Fully tighten the “Hi” knob of the manifold
valve and completely unscrew the “Lo” knob.
Run the vacuum pump for about 10~15
minutes, then completely tighten the “Lo” knob
and switch off the vacuum pump.
2
Completely unscrew the spindle of the
service valve (at 2 places) in anti-clockwise
direction to allow the fl ow of refrigerant (using
Hexagonal Wrench key).
Re-cap the service valve and tighten using
wrench. Check the cap’s periphery if there is
any gas leakage. The task is then completed.
Remove the charge hose and tighten the cap
of valve core. Check the cap’s periphery if
there is any gas leakage.
4
5
1
3
OUTDOOR UNIT
● Please mount the Outdoor unit on stable ground to prevent
vibration and increase of noise level.
● Decide the location for piping after sorting out the different
types of pipe available.
● When removing side cover, please pull the handle after undoing
the hook by pulling it downward.
Please face this side (suction side)
of the unit to the wall.
Please remove side cover
when connecting the piping
and connecting cord.
Outer
Diameter (mm)
6.35 (1/4)
9.52 (3/8)
12.70 (1/2)
15.88 (5/8)
1.0 ~ 1.5
1.0 ~ 1.5
1.0 ~ 1.5
1.0 ~ 1.5
Clutch type
A (mm)
1.5 ~ 2.0
1.5 ~ 2.0
1.5 ~ 2.5
1.5 ~ 2.5
Wing nut type
Thickness
(mm)
0.8
0.8
0.8
1.0
0.0
~ 0.5
0.0
~ 0.5
0.0
~ 0.5
0.0
~ 0.5
Flare tool for R410A
Clutch type
Conventional fl are tool
Outer
diameter
of pipe
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
Valve core cap
Torque N.m
(kgf
●
cm)
13.7 ~ 18.6 (140 ~ 190)
34.3 ~ 44.1 (350 ~ 450)
44.1 ~ 53.9 (450 ~ 550)
19.6 ~ 24.5 (200 ~ 250)
19.6 ~ 24.5 (200 ~ 250)
29.4 ~ 34.3 (300 ~ 350)
12.3 ~ 15.7 (125 ~ 160)
Small dia. side
Large dia. side
Valve
head cap
Small dia. side
Large dia. side
CAUTION
!
In case of removing fl are nut of an Indoor unit, fi rst remove a nut of
small diameter side, or a seal cap of big diameter side will fl y out.
Prevent water from entering into the piping when working.
Outdoor Unit
Indoor Unit
LCND
● Recommend to use
R410A fl aring tool
!
CAUTION
Note:
● Outdoor supply cords shall not be
lighter than polychloroprene sheathed
fl exible cord, 60245 IEC 57.
Pull downward
Vacuum
pump
adapter
Method to remove electrical cover
● Remove the screw and electrical cover.
● Insert the connecting cord (C, D) from the back of unit.
● Fixed the wire to terminal wires fi rmly as shown in fi gure at right side.
Electrical cover
Connecting cord
Screw
Connect the earth cord
After remove the
screw and band,
put the connecting
cords and fi x the
band with screw.
FINAL STAGE OF INSTALLATION
Insulation And Maintenance Of Pipe Connection
1
● The connected terminals should be completed sealed with heat
insulator and then tied up with rubber strap.
● Please tie the pipe and power line together with vinyl tape as shown
in the fi gure showing the installation of indoor and outdoor units.
Then fi x their position with holders.
● To enhance the heat insulation and to prevent water condensation,
please cover the outdoor part of the drain hose and pipe with
insulation pipe.
● Completely seal any gap with putty.
Installation Of Remote Controller
2
Power Source And Operation Test
3
● The remote controller can be placed in its holder which is fi xed on
wall or beam.
● To operate the remote controller at its holder, please ensure that the
unit can receive signal transmitted from the controller at the place
where the holder is to be fi xed. The unit will beep when signal is
received from the remote controller. The signal transmission is weaken
by the fl orescent light. Therefore, during the installation of the remote
control holder, please switch on the light, even during day time, to
determine the mounting location of the holder.
Power Source
CAUTION
!
● Please use a new socket. Accident may occur due to the use of
old socket because of poor contact.
● Please plug in and then remove the plug for 2 – 3 times. This
is to ensure that the plug is completely plugged into the socket.
● Keep additional length for the power cord and do not render the
plug under external force as this may cause poor contact.
● Do not fi x the power cord with U-shape nail.
Operation Test
● Please ensure that the air conditioner is in normal operating condition
during the operation test.
● Explain to your customer the proper operation procedures as
described in the user’s manual.
The controller should
be insert from top into
bottom side of the
holder as shown in
fi gure below.
●
How to check pipe bending.
– Compare bended pipe with the picture below.
– If bended pipe is not good enough, cut bended area and
bend it again.
a all areas are smooth, no notching area
b no scratch or mark inside
c all have the same length
d phase of bending is too long
e slanting
f there are scratches around bending area
g crack
h different length
i sample of bending pipe cannot be used
Pump Down Method When Reuse
Existing Piping (R22 Model) for
R410A Model
●
Compressor oil of R22 model is insoluble in
compressor oil of R410A model. The mixing
of compressor oil may cause damage of
compressor.
Possibility of Mixing
●
Reuse of piping of R22 model is dangerous
because of its compressor oil.
●
When reuse piping of R22 model, pump
down must be carried out properly to ensure
compressor oil which is remained inside piping
is collected away.
To Reuse Old Piping
●
Piping of R22 model can be reused only when
air-conditioner is properly pumped down.
●
The purpose of pump down is to collect back the
compressor oil (which is mixed with refrigerant
and circulating inside refrigeration cycle) properly
into the outdoor unit of air conditioner.
Reuse of piping R-22 model only apply if
previous model is Hitachi and proper pump
down method is used.
CAUTION
!
Proper Pump Down Method
1
Operate air conditioner
at cooling mode for
10~15 minutes
2
After 10~15 minutes of
pre operation, close 2s
valve. After 3 minutes,
close 4s valve.
3
Take out air conditioner unit.4 Install New Refrigerant
air conditioner
Most Important Process
Purpose: To make the
oil & refrigerant mix
together. They are in
separated condition when
air conditioner is
stopped.
Mixed
refrigerant
& oil will be
collected into
outdoor unit.
It is advisable to fl ush
the piping with R410A to
avoid any contamination
remain before new
installation.
Wire length
up to 25m
Wire gauge
1.5mm
2
IMPORTANT
1) Please ensure tape attached at the unit for transportation are
removed before do installation. (Discolouring or paint damage
might be happened if expose to the sun).
2) Please make sure to remove all spacers inside the unit.
● Open the Top, Back, Side cover and Cabinet of the unit.
● Pull out the spacers inside.
(Spacers are only for transportation purpose).
If not remove, vibration and noise will occur.
!
CAUTION
Top cover
Back cover
Tape
Tape
Side cover
INS RAS-DX13CET (EN2) 1INS RAS-DX13CET (EN2) 1 4/27/15 2:49 PM4/27/15 2:49 PM
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