Hitachi RAS-70YH5, RAC-70YH5 Installation Manual
2,300mm or more
30m
500
Screw for Mounting Plate
(4.1x32)
HITACHI SPLIT-UNIT AIR CONDITIONER
INSTALLATION MANUAL
●
+ – Screwdriver●Measuring Tape●Knife
●
Saw ● ø 65mm Power Drill ● Allen Key ( 4mm)
●
Wrench (14, 17, 19, 22mm)
●
Gas Leakage Detector●Pipe Cutter
●
Plastic 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 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 in a
non public area.
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.
INDOOR UNIT
Names of Indoor Components
The Length of Indoor Unit
Power Cord
Do not alter the power cord.
Direction of Piping
Figure showing the Installation
of Indoor and Outdoor Unit.
● 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 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).
OUTDOOR UNIT
Be sure to
completely
seal any
gap with
putty.
There are 4 directions
allowed, namely, horizontally
perpendicular to the unit,
vertically down from right,
horizontally out from right and
horizontally out to left.
Don't form the piping
downward at the left of the unit.
Installation of Mounting Plate, 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.
Procedures of Installation and Precautions
●
Procedures to fix the mounting plate.
1.Drill holes on wall. 2.Fix the mounting plate on
(As shown below) wall with 4.1 x 32 screw
(As shown in figure below)
●
Procedures to fix the holder of remote control.
1.Drill holes on wall.
(As shown below)
Installation of the Indoor Unit
2
VERTICALLY DOWNWARD PIPING
Preparation
●
Connect power cord.
●
Pull out the pipe, power 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).
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 COOLANT PIPES AFTER CONNECTION
●
The coolant 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.
●
Connect the power cord.
●
After adjustment, fit the power 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.
THE CONNECTION OF COOLANT PIPE DURING THE
INSTALLATION OF INDOOR UNIT
Preparation To Install Coolant Pipes
CAUTION
●
Please fix in the plastic
core after flaring 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 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.
<
I984: A
>
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
●
Coolant pipes and power cord must be tied together.
●
The front part of the coolant pipes are at locations
marked with “
” symbol.
Installation of Drain Hose
3
Pull this to the front
during the connection
of coolant pipes to
ease task.
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.
●
Insulate the connecting portion of coolant pipe with insulator.
●
Connect the power cord.
●
After adjustment, the power cord and coolant pipes are placed
into the space available under the indoor unit.
●
The projection of indoor unit must hook to the mounting
plate.
INDOOR UNIT
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
!
!
about 1.6m
about
0.9m
20
Cut away shaded
portion, and finish
the edge of the
opening so that
there is no burr.
Connection
Horizontally
perpendicular
to the unit
Pipe
Power cord
Drain hose
!
Pipe
Rubber strap tied with great force
Pipe
!
0.85m
below
5mm
Please bend at a small
radius to form an arc
about 15cm
Projection
Temporary stand
Hook
Power cord
Protection
pipe
Drain
hose
Connected
terminals
of coolant
pipes
Coolant pipes
Power cord
Heat insulation
pipe
!
!
Bending
upwards
Stagment
water
Drain
Stagment
water
Openings
Drain cap
Please insert
until here
Drain hose
Please insert
until here
Mounting Plate
Hook
Coolant pipe
Power Cord
Drain Hose
Protection
Pipe
Lift the body
of the unit
upwards and
then force
it downwards.
Mounting
Plate
Projection
Power line, pipe and
drain hose must be
tied together with
plastic tape.
!
External dimension of
indoor unit
160mm
180mm
80mm
1030mm
40mm
45mm
30mm
Drain Hose
45mm
298mm
Level
Line
Hole for
pipe
Mark
Screw for Mounting plate
Please use more
than 4 screws.
Mounting
Plate
!
2~5mm
Protection
pipe
Outdoor
Indoor
Seal with
putty
Sleeve of
protection
pipe
WALL
!
!
!
!
!
●
Remove the cap for drain hose installation
Drain cap
Drain hose
Drain hoseDrain cap
CAUTION
Condensed water may leak out if not inserted properly.
!
Pipe
support
Pull up the pipe after
bending downward
●
Transform the piping while holding down the lower portion
of pipe-support by hand.
Dimension of Mounting Stand
of the outdoor unit
(unit : mm)
508
100
35
35
12
225
8
mounting stand
Indoor Unit
Outdoor Unit
RAS-70YH5
RAC-70YH5
+
1
2
3
4
5
6
7
1
1
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 R410A. 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.
3
Bush
Names of Outdoor Components
QtyNo. Item
Drain Pipe
1
8
9
Bush
1
10
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
!
<
I984: A
>
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.
3
Procedures of using Vacuum Pump for Air Removal
As shown in figure on the right, remove
the cap of valve head and valve core
and then connect them to the vacuum
pump and manifold valve.
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.
2
Completely unscrew the spindle of the
service valve (at 2 places) in anticlockwise direction to allow the flow of
coolant (using Hexagonal Wrench key).
3
Remove the Charge hose and tighten
the cap of valve head. The task is then
completed.
4
1
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
!
Copper pipe
Trimming tool
Outer
Diameter (ø)
6.35 (1/4")
15.8 (5/8")
Imperial flaring tool
0.8 – 1.5
1.0 – 2.0
Rigid flaring tool
0 – 0.5
0 – 1.0
A (mm)
AIR REMOVAL
●
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 (6 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.
IMPORTANT
Wiring Of The Outdoor Unit
●
Please remove the side cover for wire connection.
!
CONNECTION OF POWER CORD
A
Die
Die
Copper pipe
Wrench
Torque
wrench
Flare nut
Lo
Hi
Meter showing pressure
Manifold valve
Vacuum pump
Charge
hose
When pumping starts, slightly loosen
the flare nut to check of air sucked in.
Then tighten the flare nut.
When the meter reaches –101KPa (–76cmHg)
during pumping, fully tighten the shuttle.
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 indoor 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.
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
Earth terminal
B
A
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”.
Method to remove electrical cover
●
Remove the screw and electrical cover.
●
Insert the connecting cord (A,B,C,D) from the bottom of unit.
●
Fixed the wire to terminal wires firmly as shown in figure at
right side.
AUTO
RESTART
SWITCH
Electrical cover
Screw
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
Remote
Controller
Holder for
Remote Controller
Screw (2 pieces)
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 plastic tape
as shown in the figure of installation of both the 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 Control
2
Earth Line And Circuit Breaker
3
Power Source And Operation Test
4
●
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.
CAUTION
!
●
The earth line terminal of the outdoor unit is below the
service valve.
●
To avoid short circuit, it is necessary to install circuit breaker
depending on the mounting location of the unit.
●
Do not place earth line near the following objects:
(1) Water pipe
(2) Gas pipe – There is danger of catching fire.
(3) The earth line of lightning conductor and telephone —
short circuit may occur during lightning.
Power Source
WARNING
!
●
Do not alter the plug of power cord.
Do not make extension to the power cord.
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
The controller must be hooked onto the hook at the lower
part of the holder. Push in the remote controller in the direction
as shown in figure below.
Outer
dia.of pipe
6.35 (1/4")
15.88 (5/8")
6.35 (1/4")
15.88 (5/8")
Valve
head cap
Torque N·m
(kgf · cm)
13.7 – 18.6 (140 – 190)
49 – 58.8 (500 – 600)
19.0 – 21.0 (194 ~ 214)
29.0 – 31.0 (296 ~ 316)
9.0 (92)
Small dia. side
Large dia. side
Valve core cap
Small dia. side
Large dia. side
Cable length
up to 15m
up to 25m
Wire cross-section
2.5mm
2
4.0mm
2
IMPORTANT
Fuse Capacity
20A time delay fuse
WARNING
Connect the
earth cord
After remove the screw
and band, put the
connecting cords and fix
the band with screw.
ABCD
How to Remove the Front
Cover
●
Open the cover and remove the screw.
●
After open the front panel, remove the screw and open
the cover .
●
Remove the filter, release the axis by pulling the center
portion of front cover in the direction of arrow .
●
Push vertical air deflector handle to the right or left side.
●
After raise the front cover from bottom side as , release
the front cover by pull the right or left sides as .
How to Install the Front Cover
●
Insert the two hooks at the upper side certainly.
●
Open Front Panel, push the center down in the direction
of the arrow to insert the axis at the center of the front
cover into the hook at the outlet frame.
●
Fixed the screw and cover and .
1
6
2
3
4
5
1
6
1
2
1
3
4
Screw
Cover
Front panel
Front Cover
Vertical Air Deflector Handle
Screw
6
5
5
1
1
2
2
●
THIS APPLIANCE MUST BE EARTHED.
Procedures of Wiring
WARNING
!
Power is supplied from Outdoor Unit
L
N
DCBADCBA
Indoor Unit
Line Cord
Outdoor Unit
Connecting Cord
1.6 or 2.0
AC 220-240V
2.5
2.5
Power line Control line
GRN + YEL
25mm
35mm
10mm
30mm
10mm
30mm
10mm
10mm
70mm
10mm
10mm
45mm
Indoor
Unit
GRN + YEL
Outdoor
Unit
Strip wires
●
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 = 30A 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 240V 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.
WARNING
!
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 in cold region, etc.
In cold region with severe cold climate and heavy snow, water
discharged from heat exchanger freeze on the base surface and
this may affect drainage. In such a region, remove bush on the
bottom face of outdoor unit for better drainage. When using
drainpipe, consult our dealer.
Side cover
Back cover
BASE
DRAIN PIPE
A
DRAIN PIPE
BUSH
100 mm ABOVE
10
9
BUSH
8
C
D
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