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above 50mm
above 100mm
about 400mm
about 300mm
must not bend
above 100mm
2,300mm or more
1
2
Maximum pipe length 15m
Minimum pipe length 4m
above 200mm
above 700mm
above 200mm
above 50mm when
installed on the
ceiling of balcony
(
)
above 100mm
above 100mm
give clearance as
wide as possible
Plug
6
4
3
5
HITACHI SPLIT-UNIT AIR CONDITIONER
INSTALLATION MANUAL
Indoor Unit
Outdoor Unit
RAS-S13CYT
RAC-S13CYT
RAS-E13CYT
RAC-E13CYT
● + – Screwdriver ● Measuring Tape ● Knife
●Saw ● ø 65mm Power Drill ● Hexagonal Wrench
Key (
4mm) ● Wrench (14, 17, 19, 22, 24, 27mm)
● Gas Leakage Detector ● Pipe Cutter
●Vinyl Tape ● Pliers ● Flare Tool
●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
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 sup-
port 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 specified in
figure 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 fluorescent 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 specified
in figure 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 flammable 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.
about 1.6m
about
0.9m
OUTDOOR UNIT
Drain hose
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 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 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 with putty
to avoid dripping of rain
water into the room.
Procedures of Installation and Precautions
●Procedures to fix 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 figure below)
●Procedures to fix the holder of remote controller.
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 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 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).
Drain hose
Drain cap
Drain cap
●Remove the cap for drain hose installation
Drain cap
Please insert
until here
Drain hose
Please insert
until here
! CAUTION
Condensed water may leak out if not inserted properly.
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 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 adjustment, fit the connecting cord and pipes
into the space available under the indoor unit.
! CAUTION
●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.
Pipe
Rubber strap tied with great force
Insulation pipe (must be wrapped with
vinyl tape at every 120mm).
THE CONNECTION OF REFRIGERATING PIPE DURING THE
INSTALLATION OF INDOOR UNIT
Preparation To Install Refrigerating Pipes
! CAUTION
●Please fix in the plastic
core after flaring to avoid
plastic chips entering the
pipes.
below
5mm
Please bend at a small
radius to form an arc
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.)
! CAUTION
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.
! CAUTION
●Refrigerating pipes and connecting cord must be
tied together.
●The front part 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.
●Place the drain hose through the hole on the wall.
●Insulate the connecting portion of refrigerating pipe with
insulator.
●Wrap the refrigerating pipes with insulation pipe.
●Connect the connecting cord.
●After adjustment, the connecting cord and refrigerating pipes
are placed into the space available under the cooling unit.
●The projection of indoor unit must hook to the hanger.
2~5mm
Protection
pipe
Outdoor
Indoor
Seal with
putty
Sleeve of
protection
pipe
WALL
INDOOR UNIT
about 15cm
Projection
Temporary stand
Hook
Openings
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).
inner diameter ø 16mm
Be sure to
completely
seal any
gap with
putty.
Direction of Piping
Dimension of Mounting Stand
of the outdoor unit
(unit : mm)
32mm
19mm
Wall
1 Hanger
2 Screw
Plug
Wall
above 50mm
Ceiling
4.1 x 32 Screw
Wall
Remote
Control
Holder
5 Screw
Plug
3
Connecting cords,
pipe and drain hose
must be tied together
with Vinyl tape.
Hanger
Hook
Refrigerating
Pipe
Connecting
Cord
Drain Hose
Protection
Pipe
Lift the body
of the unit
upwards and
then force
it downwards.
Hanger
Projection
Pipe
Connecting cord
Drain hose
Pipe
Insulation pipe
0.70m
Bending
upwards
Condensed
water pond
Ditch
Condensed
water pond
20
Cut away shaded
portion, and finish
the edge of the
opening so that
there is no burr.
Connected
section
Connecting cord
Drain hose
Protection
pipe
Refrigerating pipes
Connecting cord
Heat insulation
pipe
Pull this to the front
during the connection
of refrigerating pipes
to ease task.
Pipe
support
Pull up the pipe after
bending downward
●Transform the piping while holding down the lower portion of
pipe-support by hand.
Hanger
1
Screw for holder of
Remote Controller
(3.1x16)
AAA Size Battery
Screw for Hanger
Holder for Remote
Controller
(4.1x32)
Remote Controller
6
1
2
2
1
57
12
35
120
500
320
10
35
(10)
340
mounting stand
1
2
3
4
5
6
WARNING
!
CAUTION
!
●
A circuit breaker or fuse (20A 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 flammable gas. The outdoor unit may
catch fire if flammable gas leaks around it.
●
Please ensure smooth flow 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 qualified technician to install your unit. Water leakage, short circuit or fire 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 fire.
●
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 specified 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 fire.
●
Please use the specified components for installation work. Otherwise, the units may collapse or water leakage, electric shock
and fire may occur.
●
Be sure to use the specified 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 fire, 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 fire in the fan-driven heater, space heater, etc., a poisonous gas may occur.
●
Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a qualified air conditioner
technician or electrician. Improper repairs may result in water leakage, electric shock and fire, etc.
Purifying Filter
2
7
Connection
Horizontally
perpendicular
to the unit
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.
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
20 gram per every meter exceeds. However, pipe length shall
not exceed 15m.
CAUTION
!
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator
is insufficient, please use
commersial products).
125mm
45mm
450mm
60mm
80mm
780mm
125mm
280mm
45mm
115mm
450mm
Level
Hanger
Hole for pipe
Weight
Mark
Line
Please use more
than 4 screws.
Screw for Hanger
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.
●Open the side plate by unscrewing the screws as shown below.
Removal Of Air From The Pipe And Gas Leakage Inspection
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.
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 figure showing the installation of indoor and outdoor units.
Then fix their position with holders.
●To enchance 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 fixed 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 fixed. The unit will beep when signal is
received from the remote controller. The signal transmission is weaken
by the florescent 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 fix 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.
Insulation material for pipe connection
Sleeve of
protection pipe
Putty
3
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 flaring, please put on the flare nut.
Pipe Connection
2
INSTALLATION OF REFRIGERATING PIPES AND AIR REMOVAL
CAUTION
!
Outer
diameter
of pipe
6.35 (1/4")
12.7 (1/2")
Valve head cap
Valve core cap
Torque N.m
(kgf ● cm)
13.7 – 18.6 (140 – 190)
44.1 – 53.8 (450 – 550)
19.6 – 24.5 (200 – 250)
12.3 – 15.7 (125 – 160)
Copper pipe
Trimming tool
Outer
Diameter (ø)
6.35 (1/4")
12.7 (1/2")
Imperial flaring tool
0.8 – 1.5
1.0 – 2.0
Rigid flaring tool
0 – 0.5
0 – 1.0
A (mm)
Small diameter
side
Big diameter
side
AIR REMOVAL
WARNING
●You may not be able to close the side cover due to the
connecting cord, under such situation, please press against
the wall of side cover to fix it.
●Be sure that the hooks (2 places) are plugged in.
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 proper wiring capacity, 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.
Wire length
up to 16m
up to 10m
up to 15m
up to 25m
up to 42m
Wire gauge
1.6mm (B.S. 14)
2.0mm (B.S. 12)
2.6mm (B.S. 10)
3.2mm (B.S. 18)
14mm2 (B.S. 16)
IMPORTANT
●THIS APPLIANCE MUST BE EARTHED.
Procedures of Wiring
●Connect the electrical wiring between the indoor and outdoor unit as shown in below Fig.
Never connect the wiring by mistake.
●The connection cord must be fixed by the band which is located on the electrical box.
Wiring Of The Outdoor Unit
●Please remove the side cover for wire connection.
!
WARNING
!
CONNECTION OF POWER CORD
A
Die
Die
Copper pipe
Wrench
Torque
wrench
Flare nut
The body of
service valve
Cap of
valve core
Hexagonal
Wrench Key
Cap of valve head
Cap of valve head
CAUTION
!
In case of removing Flare nut of a cooling unit, first remove a nut of
small diameter side, or else seal cap of big diameter side will fly out.
●Please be careful when bending the copper pipe.
●Applied frozen grease to the connection points and then screw in manually. After that,
use a torque wrench to tighten the connection.
WARNING
!
Power supply shall be connected at the rated voltage, otherwise the unit will be broken or
could not reach the specified 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.
A
B
A
B
(L) Brown
(N) Blue
Terminal Board
Line Cord
Terminal Board
Green & Yellow
Green &
Yellow
Outdoor Unit
Indoor Unit
Indoor
Unit
Outdoor
Unit
GRN + YEL
10mm
30mm
30mm
10mm
GRN + YEL
70mm
35mm
10mm
Please face this side (suction
side) of the unit to the wall.
Please remove side cover
when connecting the piping
and connecting cord.
Pull downward
Connect the
earth cord
After remove the
screw and band,
put the connecting
cords and fix the
band with screw.
Earth terminal
B
A
A
B
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
●Refer to “How to Remove The Front Cover”.
CAUTION
!
Please make sure to remove all spacers inside the unit.
●Open the Top, Back and Side cover of the unit.
●Pull out the spacers inside.
(Spacers are only for transportation purpose).
If not remove, vibration and noise will occur.
Top cover
Back cover
Side cover
The controller should be
insert from top into bottom
side of the holder as shown
in figure below.
●The naked part of the wire core should be 10 mm and fix 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 = 20A time delay)
●Please refer to the installation manual 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.
When the meter reaches - 101KPa
(-76cmHg) during pumping, fully
tighten the shuttle.
Meter showing pressure
Closed
Manifold valve
Vacuum
pump
Valve
Charge hose
Valve
Vacuum pump
adapter
When pumping starts, slightly loosen the
flare nut to check of air sucked in. Then
tighten the flare nut.
Lo
Hi
Procedures of using Vacuum Pump for Air Removal
As shown in right figure, 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” shuttle of the
manifold valve and completely unscrew
the “Lo” shuttle. Run the vacuum pump
for about 10–15 minutes, then completely
tighten the “Lo” shuttle and switch off
the vacuum pump.
Completely unscrew the spindle of the
service valve (at 2 places) in anti-
clockwise direction to allow the flow of
coolant (using Hexagonal Wrench key).
Remove the charge hose and tighten the
cap of valve head. Check the cap’s
periphery if there is any gas leakage.
The task is then completed.
2
3
4
1
Method to remove the low cover
●Pull the cover at 1 and 2 in the directions as shown by arrows to
remove the cover.
Remote
Controller
Holder for
Remote Controller
Screw (2 pieces)
How to Remove The Front Cover
1
Remove the front panel.
●
Please remove and attach the front panel by
both hands.
●
After opening the front panel by both hands.
1
1
1
1
1
Undo the right arm while pushing it inside.
2
2
2
2
2
Slide the front panel to right as shown in figure.
Then remove while pulling it to front.
2
Remove the filters.
3
After removing two screws, pull the center of
the front cover towards you and release the
claws.
4
Pull the side faces (lower sections) of the front
cover towards you as shown in the figure and
remove the cover.
How to Attach the Front Cover
1
Check that the drain pan is securely attached.
2
After installing the front cover onto the unit, hook
three claws at upper side of the cover securely.
Then, push the center of the front cover to lock the
claws.
3
Tighten the two screws.
4
Install the filter.
5
Slide the shafts of the right and left arms on the
washable panel along the steps to insert the shafts
into the holes till they stop. After checking that the
shafts are securely inserted, close the panel.
Step
Shaft
Hole
! CAUTION
Note:
●Outdoor supply cords shall not be
lighter than polychloroprene sheathed
flexible cord, 60245 IEC 57.
IMPORTANT
20A time delay fuse
Fuse Capacity
