Hitachi RAS-SD10CCT, RAS-SX10CCT, RAC-SD10CCT, RAC-SX10CCT 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 speci ed in
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
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 speci ed in 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 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 re may be caused. 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-SD10CCT
RAS-SX10CCT
In case the pipe length is more than the recommended length for
chargeless, add refrigerant R410A as below. Do not exceed the
maximum pipe length.
RAC-SD10CCT
20 8 20 gram/meter
RAC-SX10CCT
20 – –
Model
Max. Pipe Chargeless up to Additional R410A
●
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
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
●
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, 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.
●
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
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
Heat insulation pipe
Connecting
cord
Refrigerating pipe
Pull this to the front
during the connection
of refrigerating pipes
to ease task.
RAC-SD10CCT
RAC-SX10CCT
Procedures of Installation and Precautions
●
Procedures to 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 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)
Tools Needed For Installation Work
●
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.
●
Please observe the instructions stated in the installation manual during the process of installation. Improper installation may
cause water leakage, electric shock and 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 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.
●
Please use the speci ed components for installation work. Otherwise, the units may collapse or water leakage, electric shock
and
re may occur.
●
Be sure to use the speci ed piping set for R410A. Otherwise, this may result in broken copper pipes or faults.
●
When installing or removing an air conditioner, only speci ed refrigerant (R410A) 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 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 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 re in the fan-driven heater, space heater, etc., a poisonous gas may occur.
●
Unauthorized modi cations to the air conditioner may be dangerous. If a breakdown occurs please call a quali ed air conditioner
technician or electrician. Improper repairs may result in water leakage, electric shock and 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
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 (16A 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 ammable gas. The outdoor unit may catch re if
ammable gas leaks around it.
O
Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its mist 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 ow of water when installing the drain hose.
●
Piping shall be suitable supported with a maximum spacing of 1m between the supports.
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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 gure showing the installation of Indoor and
Outdoor units. Then 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
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 xed. The unit will beep
when signal is received from the remote controller. The signal
transmission is weaken by the 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.
Pump Down Method When Reuse
Existing Piping (R22 Model) for
R410A Model
Proper Pump Down Method
●
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.
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 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
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. (Use the detector provided for
R410A)
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 aring, please put on the are nut.
Pipe Connection
2
INSTALLATION OF REFRIGERATING PIPES AND AIR REMOVAL
●
Recommend to use
R410A aring tool.
In case of removing are nut of an Indoor unit, rst remove a nut
of small diameter side, or a seal cap of big diameter side will y
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
!
!
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 are tool
● The naked part of the wire core should be 10 mm and 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 3x1.5mm
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 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.
● Do not make any connection in the middle of the connecting cable. It may cause the
wire over heated, emit smoke and 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 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
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 x it.
● Be sure that the hooks of the side plate is 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 speci ed capacity.
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.
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”.
Precautions When Performing Wiring of the
Outdoor Unit
Reuse of piping R-22 model only apply if previous
model is Hitachi and proper pump down method is used.
CAUTION
!
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 ush
the piping with R410A 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
are nut to check of air sucked in. Then
tighten the are nut.
As shown in right 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 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 (C, D) from the back of unit.
● Fixed the wire to terminal wires rmly as shown in gure at right side.
Electrical cover
Connecting cord
Screw
Fuse Capacity
16A time delay fuse
IMPORTANT
!
CAUTION
Note:
● Outdoor supply cords shall not be lighter than
polychloroprene sheathed exible cord, 60245 IEC 57.
WARNING:
Do not remove or cut the Protective Sheet
NOTE:
Before performing the connection of
the connecting cord to the outdoor unit,
check whether the Protective Sheet is
equipped or not.
If equipped, connection of the connecting
cord shall be performed as below.
If not, perform the connection of the
connecting cord as in “Procedures of
Wiring”.
Pull out the Protective Sheet as
shown without removing it from
the outdoor unit.
Insert the connecting cord
through the hole of the Protective
Sheet.
Connect the connecting cord as
shown in “Procedures in Wiring”.
Place the Protective Sheet back
to its original position as shown.
Protective Sheet
Pull out the
Protective Sheet
Place back
the Protective
Sheet
Connect the
earth cord
After remove the
screw and band,
put the connecting
cords and 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
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