Hitachi RAS-60YHA4 User 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-60YHA4 RAC-60YHA4
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 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.
INDOOR UNIT
Figure showing the Installation of Indoor and Outdoor Unit.
OUTDOOR UNIT
FOR SERVICE PERSONNEL ONLY
Direction of Piping
WARNING
!
●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 R410A. Otherwise, this may result in broken copper pipes or faults.
●When installing or removing an air conditioner, only specified 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 that may
cause rupture to the refrigeration cycle.
●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.
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.
●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
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
< IA1367: A >
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 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 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, fit the connecting cord and pipes into
the space available under the indoor unit.
●
When connection is at left side, refrigerating pipe and
cabinet shall be tied together.
Failing to do so may cause the unit bottom side become
warping.
Excess binder shall be cut to prevent abnormal sound
and water dripping.
!
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.
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 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 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 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.
●The end of the refrigerating pipes are at locations
marked with “ ” symbol.
Installation of Drain Hose
3
INDOOR UNIT
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 fix 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 figure below)
●Procedures to fix 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
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).
( mark is tool exclusive use for R410A)
●+ –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
Dimension of Mounting Stand
of the outdoor unit
(unit : mm)
●The difference in height
between the indoor and
outdoor unit should be
kept max 20m.
●The connecting pipe,
no matter big or small,
should all be insulated
with insulation pipe and
then wrapped with plastic
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).
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the
insulator is insufficient,
please use commercial
products).
In case the pipe length is more than 20m, add refrigerant R410A
at 10 gram per every meter exceeds. However, pipe length shall
not exceed 30m.
CAUTION
!
Be sure to
completely
seal any
gap with
putty.
HOW TO REMOVE INDOOR UNIT
● Push up the (PUSH) sections at the bottom of the indoor unit and
pull the bottom plate towards you. Then the claws are released from
the stationary plate.
(The (PUSH) sections are indicated by 2 arrows in the right figure)
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.
!
!
!
●A circuit breaker 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 flammable gas. The outdoor unit may catch fire if
flammable gas leaks around it.
● Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its mist flows 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 flow of water when installing the drain hose.
●Piping shall be suitable supported with a maximum spacing of 1m between the supports.
CAUTION
CAUTION
!
● Selecting the installation location: Suitable location that will reduce the
impact from rain and direct sun that may affect the unit performance.
Besides that, ventillation 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 specified
in figure below. At least 3 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.
● 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 fire may be caused. Request your
customer to keep the surrounding of the unit is clean.
1
Bush
Names of Outdoor Components
QtyNo. Item
1
Drain Pipe
Bush
3
8
9
10
!
CAUTION
Condensed water
may leak out if not
inserted properly.
● Remove the cap for
drain hose installation
Drain cap
Drain cap shall
be fully tightened
by pushing with
Hexagonal wrench
key when changing
location.
INS RAS-RAC-60YHA4 (EN) 1INS RAS-RAC-60YHA4 (EN) 1 8/23/16 3:12 PM8/23/16 3:12 PM

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)
< IA1367: A >
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
!
CONNECTION OF POWER CORD
Removal Of Air From The Pipe And Gas Leakage Inspection
3
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 flare tool
Outer
diameter
of pipe
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
15.88 (5/8")
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
15.88 (5/8")
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)
49 ~ 58.8 (500 ~ 600)
19.6 ~ 24.5 (200 ~ 250)
19.6 ~ 24.5 (200 ~ 250)
29.4 ~ 34.3 (300 ~ 350)
29.0 ~ 31.0 (296 ~ 316)
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 flare nut of an Indoor unit, first remove a nut of
small diameter side, or a seal cap of big diameter side will fly out.
Prevent water from entering into the piping when working.
●Recommend to use
R410A flaring tool
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 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
●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 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 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.
The controller should be insert from top into bottom side of the holder
as shown in figure below.
AIR REMOVAL
When the meter reaches - 101KPa (-76cmHg)
during pumping, fully tighten the shuttle.
Lo Hi
Meter showing pressure
Closed
R410A
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.
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” 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 flow 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.
Pull downward
CONDENSED WATER DISPOSAL OF OUTDOOR UNIT
There are holes on the base of Outdoor unit for condensed
water to exhaust.
In order to flow condensed water to the drain, the unit is installed
on a stand or a block so that the unit is 100mm above the ground
as shown figure. Join the drain pipe to one hole.
At first insert one portion of the hook to the base (Portion A),
then pull the drain pipe in the direction shown by the arrow while
inserting the hook into the base. After installation, check whether
the drain pipe cling to the base firmly.
When Using and Installing In Cold Areas
When the air conditioner is used in low temperature and in snowy
conditions, water from the heat exchanger may freeze on the base
surface to cause poor drainage. When using the air conditioner
in such areas, do not install the bushings. Keep a minimum of
250mm between the drain hole and the ground. When using the
drain pipe, consult your sales agent.
For more details, refer to the installation Manual for Cold Areas.
BASE
DRAIN PIPE
●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 f there are scratches around bending area
c all have the same length g crack
d phase of bending is too long h different length
e slanting i sample of bending pipe cannot be used
INS RAS-RAC-60YHA4 (EN) 2INS RAS-RAC-60YHA4 (EN) 2 8/23/16 3:12 PM8/23/16 3:12 PM