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No.
Item
Qty
7
Remote
Controller
1
8
Insulator
1
(t3 x 160 x 600)
9
Screw for Overturn
Prevention
2
(4.0
×
34)
0
Insulator
1
(20
×
30
×
300)
-
Bush
3
2.3 Connecting the pipe to indoor unit
• Draw in the pipes through the hole of the wall or the floor to indoor.
• Arrange the pipe shown below. In the case that large pipe and small
pipe arrange to make in front and behind.
• The indoor piping should be insulated with the enclosed insulation
pipe.
• The pipe should first be cut longer than the length shown below.
• The excess section of the pipe should be cut off during pipe connection.
1. Installation of wall penetration and installation of protection pipe
1.1 Hole position
• Make a hole on the wall such
the position as shown below,
in order to keep the flow for
condensed water smooth.
• 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
(Mark is exclusive use tool for R410A) •
ª ·
Screwdriver
• Measuring Tape • Knife • Saw • ø65mm Power Drill
• Hexagonal Wrench Key ( 4mm) • Wrench (14,17,19,
22mm) Gas leakage Detector • Pipe Cutter • Putty
• Vinyl Tape • Pliers • Flare Tool Vacuum Pump Adapter
Manifold Valve Charge Hose Vacuum Pump
FOR SERVICE PERSONNEL ONLY
—
7
—
INDOOR UNIT / OUTDOOR UNIT
RAF-25
08!
/ RAC-25
&8!
RAF-35
08!
/ RAC-35
&8!
RAF-50
08!
/ RAC-50
&8!
HITACHI SPLIT UNIT AIR CONDITIONER
INSTALLATION MANUAL
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.
Make sure to connect earth line.
This sign in the figures indicates prohibition.
Be sure that the unit operates in proper condition after installation. Explain to customer the proper operation and maintenance of the unit
as described in the user’s guide. Ask customers to keep this installation manual together with the instruction manual.
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 installation 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 cables which are approved official in your country. Be sure to use the specified circuit. A short circuit and fire may occur due to the use of low quality
wire or improper work.
• Be sure to use the specified cables 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 to prevent the external force is being applied to the connection section of the terminal base. Improper insertion and
loose contact may cause over-heating and fire.
• Please use the specified components for installation work. Otherwise, the unit may collapse or water leakage, electric shock, fire or stronger vibration
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 transferring an air conditioner to another location, make sure that air other than the specified refrigerant (R410A) does not enter the
refrigeration cycle. If other air should enter, the pressure level of the refrigeration cycle may increase abnormally which could result in a rupture and injury.
• 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.
• Be sure to connect the earth line from the power supply wire to the outdoor unit and between the outdoor and indoor unit. Do not
connect the earth line to the gas tube, water pipe, lighting rod or the earth line of the telephone unit. Improper earthing may cause
electric shocks.
• When finishing the refrigerant collection (pumping down), stop the compressor and then remove the coolant pipe. If you remove the refrigerant pipe while
the compressor is operating and the service valve is released, air is sucked and a pressure in the freezing cycle system will build up steeply, causing an
explosion or injury.
• When installing the unit, be sure to install the refrigerant pipe before starting the compressor.
If the refrigerant pipe is not installed and the compressor is operated with the service valve released, air is sucked and the pressure level of the
refrigeration cycle may increase abnormally which could result in a rupture and injury.
CAUTION
• A circuit breaker must be installed in the house distribution box for the direct connected power supply cables to the outdoor unit. In case of other
installations a main switch with a contact gap or more than 3mm has to be installed. Without a circuit breaker, the danger of electric shock exists.
• 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. Improper installing may wet your furniture.
• An IEC approved power cord should be used. Power cord type: NYM.
Names of Indoor Components
INDOOR UNIT
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.
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 and television.
• 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.
OUTDOOR UNIT
WARNING
• The outdoor unit must be mounted at a location which can support
heavy weight. Otherwise, noise and vibration will increase.
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 two of the above sides must be open air.
• The installation height should be at least 2,300mm or more from the
floor.
• 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 connecting cord at least 1m away from
the antenna or signal line of television, radio or telephone. This is to
avoid noise interference.
1.2 Wall penetration and installation of
protection pipe
• Drill a ø65mm 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.
CAUTION
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.
Indoor
Outdoor
Seal with
putty
2~5mm
WALL
Seal with
putty
Sleeve of
protection pipe
Protection
pipe
2. Installation of the indoor unit
2.1 How to remove the front cover
Please refer to section for details.
Front cover
bushing
Bushing
(2 pieces on
each side)
2.2 Drain pipe
• Make sure drain pipe slopes downward so that drain flows smoothly without being trapped in the middle.
• The drain hose (connecting port outer diameter: 16mm or 20mm, length: 500mm) is included in the indoor unit. Prepare
a drain pipe as shown in the following figure.
• To prevent condensation, the indoor drain pipe should be covered with heat insulation material with a thickness of more
than 10mm.
• After piping is completed, check to make sure that drain discharges smoothly. Seal the drain pipe tightly with tape to
keep dirt out.
Front view
Right side view
88
210
96
500
Drain hose
Make sure the drain hose
slopes downward.
Drain pipe (procure locally)
(Unit: mm)
Cabinet
For floor piping
• For floor piping, cut the front
cover bushing with a plastic
cutter or similar tool and use
a file for an attractive finish.
For sideways piping
• For right sideways piping,
cut the stand’s bushing
with a plastic cutter or
similar tool and use a file
for an attractive finish.
If there is a baseboard
• If the baseboard is 5~15mm
in thickness and 115mm or
less in height, cut the pipe
bushing to conform to the
baseboard.
11
5
70
5
15
Baseboard
Cabinet
Removal and installation
of front cover
Screw (3 pieces)
Connecting section
Screw (3 pieces)
80~100mm
65mm
Drain hose
make lower
than center of
the hole.
55mm
184mm or less
Hole Position
In the case of making a hole on the
wall.
In the case of making a hole on
the floor.
INDOOR UNIT
40
180
R80
130
170
R60
40
180
R80
170
40
340
40
WARNING
• For sideways piping, do not install the drain
hose sideways. Connect the drain hose so that
it comes out directly.
• Sideways installation of the drain hose will
prevent it from sloping downward, causing
water leakage. To avoid dripping, make sure to
pass the drain hose under the pipe.
PIPE SUPPORT
PIPE SUPPORT
Screws
Mount PIPE SUPPORT so that the cylindrical portion of the drain pan passes
through its hole and secure it with screws located at the right back corner.
Hook the PIPE
SUPPORT tab in
the square hole.
• Since there is some space between PIPE SUPPORT and
the pipe, affix the insulator
0
to the PIPE SUPPORT.
As shown in the figure on the right, affix the insulator
0
to the PIPE SUPPORT to sandwich it.
• After connecting the pipes and connecting cord, be sure to
screw PIPE SUPPORT tightly and fix the pipes and
connecting cord.
• Position the easy-to-attach side of PIPE SUPPORT (after
aligning it with the pipe) to face the front and secure it with
a screw. (Be sure to install PIPE SUPPORT to prevent
rodents from entering the indoor unit.)
• To prevent the pipe connector from contacting the front
cover, push the connector as far as it goes.
• Arrange the connecting cord, pipes and drain hose neatly
and store them in the bottom section of the rear surface of
the indoor unit.
Indoor unit rear surface
Pipe layout of the unit rear surface
Connecting cord
8
Insulator
Connecting cord
Pipe
Drain hose
Pipe/drain hose layout when passing through the file in a wall
Pipe
8
Insulator
• Sideways piping.
Top view
Front view
Right side view
Wall
W
all
160mm or less
Floor
160mm or less
Large pipe
Small pipe
• In the case of make a hole on the wall.
Before piping
After piping
• In the case of make
a hole on the floor.
Floor
W
all
W
all
CAUTION
When mounting the flare
insulator
1
, make sure there
is a space between the
insulator and left of resin
part. Otherwise, may cause
water dripping.
(Unit: mm)
above 350
0
Insulator
PIPE SUPPORT
2
Binder
1
Flare
insulator
Wrap flare insulation, bind
top and bottom flare
insulation by binder. Wrap
tape on flare insulation
closely.
2
Binder
Pipe
Floor
32mm
3. Fixing the indoor unit
3.1 Floor installation
438
440
155
55
ø9 rear
fixing hole
for anchor
bolt or
screw of
accessory.
Fixing on the wall
Case
Fixing the base of indoor unit
• Fix the base of indoor unit on the floor with 4.1
×
32mm screws (right and left).
• When fixing the indoor unit above the ground, be sure to fix an L-angle at the bottom to support it.
2. Push plug into the holes.
1. Drill holes on floor.
(The plug can be secured diagonally with a screw as shown above.)
WARNING
Be sure to attach screw
3
to prevent
the indoor unit from overturn.
3
Screw (4.1x32)
Indoor unit
Plug
(Procure locally)
Screw
Screw
3
Screw (4.1x32)
3
Screw (4.1x32)
3
Screw
(4.1x32)
3
Screw
(4.1x32)
Fixing on the hanger
3.2 Wall installation
Direct mounting on the wall
184mm o
r less
Procedures of installation and precautions
Procedures to fix the hanger and indoor unit.
1. Drill holes on wall.
(As shown below)
2. Push plug into the holes.
(As shown below)
3. Fix the hanger on wall with
4.1 X 32 and 4.0 X 34 screw.
(As shown in figure below)
Wall
ø4.8mm
32mm
Wall
Plug
Hanger
3
Screw (4.1 x 32)
Horizontal air deflector (Air intake)
Above
100mm
Above 200mm
Above 150mm
Lattice door
Horizontal air deflector (Air outlet)
3.3 Built-in installation
• If outlet is covered with the lattice door, room temperature may not be
controlled properly. Therefore, air outlet must be open as much as possible.
• If air deflector of air outlet is adjusted too much upward, room temperature
may not be controlled properly due to the heat inside the lattice door.
Therefore, the deflector must be adjusted to nearly horizontal angle.
• If signal receiver is covered with the lattice door, signal receiving distance
or range (angle) becomes smaller. Therefore, signal receiver must not be
covered with the lattice door.
• Only the vertical lattice door may be used. Be sure to use a lattice door
with an open area ratio of 75% or more. If another lattice door or one with
an open area ratio of less than 75% is used, maximum performance may
not be obtained.
• With a built-in installation, it may take more time to reach the set
temperature after the unit is switched on.
30mm
Air conditioner
4.
Checking of drawing drain hose
• Connect the separate drain hose to the drain hose that is attached to the indoor unit.
• For keeping the smooth flowing of condensed water the drain hose should be inclined as shown in figure below.
Bending
upwards
Bad
Condensed
water pond
Bad
Bad
Condensed
water pond
Bad
Ditch
CAUTION
Please ensure the smooth flow of condensed water of the Indoor unit during installation. (Carelessness may result in water
leakage.)
WARNING
Be sure that the hose is not loosely
connected or bent.
OUTDOOR UNIT
Condensed water disposal of outdoor unit
• There is 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.
• Cover the drain hole with a bush. To install the bush, put it on the drain hole as shown in the figure and press the both
sides of the bush to fit into the hole. After installation, check whether the drain pipe and bush cling to the base firmly.
• 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. Reinstall the side cover
in reverse order of the removal.
Pull downward
Please face this side (suction
side) of the unit to the wall.
Please remove side cover when
connecting the piping and connecting
cord.
=
Bush
~
Drain pipe
Outer diameter: 16mm
Above 100mm
Base
Drain hole
RAC-25FX8 • RAC-35FX8
RAC-50FX8
~
Drain pipe
Outer diameter: 16mm
Above 100mm
Base
Drain hole
=
Bush
• Do not touch the suction port,
bottom surface, or aluminium fin of
the outdoor unit.
• Failure to do so may cause an
injury.
CAUTION
• Install the outdoor unit horizontally and make sure that condensate drains away.
• In case of using in cold weather area
Especially when there are heavy snows in cold weather area, condensed water freezes on the base and may not drain.
In this case, please remove the bush and the drain pipe at the bottom of the unit (left and centre near discharge portion
of air, each 1 place) to restore smooth drainage. Ensure that the distance from the drain hole to the ground is 250mm or
more.
• Remove PIPE SUPPORT.
• Insert the drain hose into the hole in the wall.
• Winding insulation pipe for drain hose and taping 4 or 5 places to fix.
• Connect the pipe to the Indoor unit.
• After completing the piping connection, cover the connector with the insulator.
• Connect the cord (follow instructions in the section “Connection of the connecting cord” on the reverse of this sheet).
ø4.8mm
Direction of Piping
Piping configuration may be in three
different directions: direct rear piping,
right downward piping and right
sideways piping.
Figure showing the installation of Indoor and Outdoor Unit.
(For example: Wall installation)
• The refrigerating machine oil is easily affected by moisture. Use
caution to prevent water from entering the cycle.
• 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).
above 200mm
❈
above 50mm
❈
give clearance as
wide as possible
❈
above 200mm
above 100mm
above 200mm
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator is
insufficient, please use commercial
products.)
Above 100mm
Above 150mm
Above
200mm
-
Bush
When mounting on a wall
(up to 150~500mm from
the floor surface)
Be sure to completely
seal any gap with putty.
The space indicated by an arrow
is to
guarantee the performance of the air
conditioner. install the apparatus at the
ample space in order to carry out the
maintenance and repair works.
Maximum pipe length 30m
RAF-50FX8/RAC-50FX8
Above 100mm
Above 150mm
Above
200mm
The space indicated by an arrow
is to
guarantee the performance of the air
conditioner. install the apparatus at the ample
space in order to carry out the maintenance
and repair works.
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator
is insufficient, please use
commercial products.)
-
Bush
When mounting on a wall
(up to 150~500mm from
the floor surface)
Be sure to com-
pletely seal any
gap with putty.
Maximum pipe leng
th 20m
above 200mm
(
)
above 50 mm when
installed on the
ceiling of balcony
above 100mm
above 200mm
❈
above 50mm
❈
give clearance as
wide as possible
RAF-25FX8/RAC-25FX8
RAF-35FX8/RAC-35FX8
❈
above 300mm
Inner diameter ø16mm
(
)
above 50 mm when
installed on the
ceiling of balcony
• The refrigerating machine oil is easily affected by moisture. Use
caution to prevent water from entering the cycle.
• 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).
Inner diameter ø16mm
No.
Item
Qty
1
Flare Insulator
1
2
Binder
2
3
Screw for Overturn
Prevention
8
(4.1
×
32)
4
Holder for Remote
Controller
1
5
Screw for Holder of
Remote Controller
2
(3.1
×
16)
6
AAA size
Battery
2
Dimension of Mounting Stand of
the Outdoor Unit
(unit : mm)
Mounting Stand
Signal receiver
Hanger
Hole for pipe
Level
Line
Weight
Screw for Hanger
Please use more
than 6 screws
Mark
External dimension of
indoor unit
20mm
750mm
50mm
470mm
Drain Hose
20mm
55mm
•
Please remove 3 screws and clip
which fix to the stand and cabinet.
(As shown in the figure below)
•
Please remove the screws which fix the cabinet and hanger.
•
Please use hidden beams in the wall to hold the hanger.
@
Sheet
@
Sheet
1. Drill holes on wall.
(As shown below)
2. Push plug into the
holes.
(As shown below)
Wall
ø4.8mm
32mm
Wall
Plug
3
Screw
(4.1 x 32)
For outdoor unit installation, allow at least 2 sides of
space around the unit to ensure ventilation flue.
For outdoor unit installation, allow at least 2 sides of
space around the unit to ensure ventilation flue.
Screw (2 pieces)
9
Screw
(4.0 x 34)
9
Screw
(4.0 x 34)
3
Screw
(4.1 x 32)
3
Screw
(4.1 x 32)
4. Fix the indoor unit on the wall
with 4.1 X 32 screw.
Cabinet
3
Screw
(4.1x32)
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.
No.
Item
Qty
=
Bush
1
(2 pcs for RAC-50FX8 )
~
Drain Pipe
1
!
Purifying Filter
1
@
Sheet
3
The components of
=
&
~
are included
in the package of the outdoor unit.
330
310
(10)
10
500
35
50
12
125
(2
pcs
for
RAC-50FXA
)
Plug
(Procure
locally)
RAF-50PXA/RAC-50FXA
RAF-25PXA/RAC-25FXA
RAF-35PXA/RAC-35FXA
RAC-25FXA
s
RAC-35FXA
RAC-50FXA
Plug
(Procure
locally)
7
4
6
5
<
S885
:
>
1
H
anger
16
7
4
6
5
Minimum pipe length 3m
Minimum pipe length 3m
B
