Hitachi RAC-S10CDT, RAS-V10CDT, RAC-V10CDT, RAS-S10CDT Installation Manual
Screw for Mounting Plate
(4.1x32)
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.
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 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
occur. Request your customer to keep the surrounding of the unit
is clean.
INDOOR UNIT
Names of Indoor Components
Direction of Piping
Figure showing the
Installation of Indoor
and Outdoor Unit.
OUTDOOR UNIT
Be sure to
completely
seal any
gap with
putty.
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.
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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
!
!
!!!
!
Dimension of Mounting Stand
of the outdoor unit
(unit : mm)
Indoor Unit
Outdoor Unit
RAS-S10CDT
RAS-V10CDT
Installation of pipe length less than minimum pipe length
requirement (4meters) may generate an abnormal sound.
●
The installation height of indoor
unit must be 2.3m or more.
CAUTION
CAUTION
!
!
1
2
3
4
5
6
7
1
2
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 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. (Improper installation 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,
Air with high humidity fl ows
from outdoor may cause
dew drop.
!
WARNING
●
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 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
Heat insulation pipe
Connecting
cord
Refrigerating pipe
Pull this to the front
during the connection
of refrigerating pipes
to ease task.
RAC-S10CDT
RAC-V10CDT
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)
Tools Needed For Installation Work
●
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 ma y
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, may cause water leakage or unit collapse, electric shock
and fi re may occur.
●
When installing or removing an air conditioner, only specifi ed refrigerant (R-22) shall be allowed, do not allow air or moisture
to remain in the refrigeration cycle. Otherwise, pressure in the refrigeration cycle may become abnormally high leading to
possibility of unit rupture.
●
Be sure to ventilate fully if a refrigerant gas leak while operating. If the refrigerant gas comes into contact with fi re, 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., poisonous gas may occur.
●
Unauthorized modifi cations to the air conditioner may be dangerous. If breakdown occurs please call qualifi ed air conditioner
technician or electrician. Improper repairs may result in water leakage, electric shock, fi re, etc.
WARNING
CAUTION
The connection of insulated
drain hose.
Please use insulated drain
hose for the indoor piping
(commercial product).
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the
insulator is insufficient,
please use commercial
products).
FOR SERVICE PERSONNEL ONLY
!
!
●
+ – 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
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.
●
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 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 suitably supported with a maximum spacing of 1m between the supports.
Level
Mounting
plate
Hole for pipe
Line
Weight
Mark
Screw for Mounting Plate
Please use more than
4 screws.
INS RAS-S10CDT-V10CDT (EN1) 1INS RAS-S10CDT-V10CDT (EN1) 1 12/6/13 9:29 AM12/6/13 9:29 AM
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FINAL STAGE OF INSTALLATION
Insulation And Maintenance Of Pipe Connection
1
●
The connected terminals should be completely 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 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
●
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 uorescent 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.
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 3s valve.
Power Source And Operation Test
3
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 beside.
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.
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.
Preparation of Pipe
●
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
In case of removing fl are nut of an Indoor unit, fi rst remove the
nut of small diameter side, or a seal cap of bigger diameter
side will burst out. Prevent water from entering into the piping
when working.
1
Outer
dia.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
head 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 core cap
Small dia. side
Large dia. side
CAUTION
CAUTION
!
!
● The naked part of the wire core should be 10 mm and fi xed 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 3x1.5mm
2
, (fuse = 16A 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 220~230V 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.
● Do not make any connection in the middle of the connecting cable. It may cause the
wire over heated, emit smoke and fi re.
● 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 outdoor. In localities
where electrical conditions are poor, use of a voltage regulator 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
WARNING
● If you cannot attach the side plate due to the connecting
cord, please 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.
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.
Wiring Of The Indoor Unit
●
For wire connection of the Indoor unit, you need to open or 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”.
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 R-22 to
avoid any contamination
remain before new
installation.
!
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
Vacuum
pump
adapter
Method to remove electrical cover
● Remove the screw and electrical cover.
● Insert the connecting cord (A, B) 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
Fuse Capacity
10A time delay fuse
IMPORTANT
!
CAUTION
Note:
● Outdoor supply cords shall not be lighter than polychloroprene sheathed
fl exible cord, 60245 IEC 57.
Connect the
earth cord
After remove the
screw and band,
put the connecting
cords and fi x the
band with screw.
●
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
Outer
Diameter (ø)
6.35 (1/4")
9.52 (3/8")
Imperial fl aring tool
0.8 ~ 1.5
1.0 ~ 1.8
Rigid fl aring tool
0 ~ 0.5
0 ~ 0.5
A (mm)
Detail of cutting the connecting cord
When removing the connecting wires
for the Indoor unit, please remove the
low cover panel in front of the unit.
INS RAS-S10CDT-V10CDT (EN2) 1INS RAS-S10CDT-V10CDT (EN2) 1 12/6/13 9:42 AM12/6/13 9:42 AM
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