Hitachi airHome 600 RAK-VH18PHASV User 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 wire.
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 a customer to keep this installation manual
together with the instruction manual.
Tools Needed For Installation Work
!
!
WARNING
!
●Carefully read through the procedures of
proper installation before starting installation
work.
●The sales agent should inform customers
regarding the correct operation of installation.
(Mark is exclusive use tool for R32)
●+–Screwdriver ●Measuring Tape
●Knife ●Saw ●ø 65mm Power Drill
●Hexagonal Wrench Key ( 4mm)
●Wrench (14,17,19,22mm)
Gas Leakage Detector ●Pipe Cutter
●Putty ●Vinyl Tape ●Pliers
●Flare Tool Vacuum Pump Adaptor
Manifold Valve Charge Hose
Vacuum Pump
●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 cables which are officially
approved 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 units may collapse
or water leakage, electric shock, fire or stronger vibration may occur.
●Be sure to use the specified piping set for R32. 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(R32) 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.
●The electric cables should neither be reworked nor added. Make sure to use an exclusive
circuit breaker. Otherwise fire or electric shock might occur by connection failure, isolation
failure or over current.
●Make sure to connect cables to terminal properly and terminal cover should close firmly.
Otherwise, over heating at terminal contact, fire or electric shock might occur.
●Make sure that there is no dust on any connected points of electric cables and fix firmly.
Otherwise, fire or electric shock might occur.
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.
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.
●No nearby leakage risk of flammable gas, and no nearby source of vapor or oil smoke.
●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.
●The installation height should be at least 2300 mm or more from the floor.
●The distance from the air outlet to the fire alarm must be at least 1500mm and there must be no fire alarm in the front
direction of the indoor unit.
The Choice of Mounting Site (Please note the following matters and obtain permission from customer before installation).
WARNING
CAUTION
CAUTION
CAUTION
This symbol shows that this equipment uses a flammable
refrigerant.
If the refrigerant is leaked, together with an external ignition
source, there is a possibility of ignition.
This symbol shows that the Operation Instructions should
be read carefully.
This symbol shows that a service personnel should be
handling this equipment with reference to the Installation
Manual.
This symbol shows that there is information included in
the Operation Manual and/or Installation Manual.
Screw for Hanger
Names of Indoor Components
Screw for Remote
Controller Holder
Remote Controller
AAA size Battery
Hanger
QtyNo. Item
1
6
2
Air purifying filter
Remote Controller
Holder
1
2
3
4
5
6
7
1
2
2
1
12
6
3
4
57
Direction of Piping
There are 6 directions
allowed, namely,
backward piping,
backward piping from left,
horizontally piping from
right, horizontally piping
from left, vertically down
from right, vertically down
from left.
Backward piping from left
Connection
above 50mm
about 450mm
2300 or more
Plug
above 100mm
above 100mm
must not bend
about 300mm
Be sure to
completely
seal any gap
with putty.
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator
is insufficient, please use
commercial products.)
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 hanger
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 hanger.
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.
●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.
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
INDOOR UNIT
Procedures of Installation and Precautions
●Procedures to fix the hanger.
1. Drill holes on wall. 2. Push plug into the holes. 3. Fix the hanger on wall
(As shown below) (As shown below) with 4.1 x 32 screw
(As shown in figure below)
Figure showing the Installation of Indoor Unit.
42.5mm
660mm
195mm
115mm
195mm
15mm
65 155mm
36mm
1050mm
85mm
294mm
Drain Hose
Level
Line Weight
Wall
Wall hole
Screw for Hanger
Hanger Screw the hanger at the positions
possibly near the upper and lower
hooks where the indoor unit is
hung. Use 4 or more screws to
fix the hanger.
32mm
ø4.8mm
1
2
Hanger
Wall
Plug
(Procure
locally)
Ceiling
Screw
Indoor Outdoor
2-5mm
Seal with
putty
Sleeve of
protection pipe
Protection
pipe
Seal with
putty
WALL
Installation of the Indoor Unit
2
Cutting Low Cover bush
1PIPING FROM THE RIGHT SIDE (BACKWARD, DOWNWARD, HORIZONTAL)
●While installing the pipe from the right, left or bottom
side, use a knife to cut openings as shown in figure.
Then smoothen the edges of openings with a file.
Openings
Openings
Preparation
●Connect connecting cord.
●Pull out the pipe, connecting cord and drain hose. Connecting cords, pipe
and drain hose must
be laid together with
Vinyl tape.
Installation
●Insert the pipe through the wall hole.
1 The upper part of the Indoor unit is hanged on the hanger.
2 The projection at the lower part of the Indoor unit is hooked
onto the hanger
Wall hole
Pipe
Drain hose
Drain layout of backward piping
Cable
Hanger
Refrigerating
pipe
Lift the body of
the unit upwards
and then force it
downwards.
Protection Pipe
Drain Hose
Drain HoseDrain cap
Connecting Cord
Hanger
Projection
2PIPING FROM THE LEFT SIDE (BACKWARD, DOWNWARD, HORIZONTAL)
Preparation
Changed of Drain Hose and Installation Procedures
●Exchange the location of drain hose and drain cap while installing the pipe from the left side as shown in 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).
●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..
●Please pull the lower part of the indoor unit outwards to check if the unit is hooked
onto the hanger. Improper installation may cause vibration and noise.
●Transform the piping while holding down the lower portion of pipe-support by
hand.
●Push the pipe deeply until the insulating section
of the drain hose end gets over the rib at the
indoor unit side.
●Remove low cover.
●Insert drain cap up to the location securely till the cap stops.
Insufficient insert may result in water leakage.
!
CAUTION
Pipe
Pipe support
Rubber strap tied
with great force
Transform after
bending downward
11
2
1
!
CAUTION
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Drain hole
INSTALLATION
MANUAL
SPLIT UNIT AIR CONDITIONER
INDOOR UNIT
RAK-VH18PHASV
RAK-VH24PHASV
EN INSTRUCTION MANUAL
FOR SERVICE
PERSONNEL ONLY
Home
!
!
< A >
<A>

INSTALLATION OF REFRIGERATING PIPES AND AIR REMOVAL
CONNECTION OF POWER CORD
Detail of Cutting the Connecting Cord
Indoor Unit
Connecting cord
Strip wires
WARNING
!
●Leave some space in the connecting cord for
maintenance purpose and be sure to secure it
with the cord band.
●Secure the connecting cord along the coated
part of the wire using the cord band. Do not
exert pressure on the wire as this may cause
overheating or fire.
Wiring of The Indoor Unit
●For wire connection of the Indoor unit, you need to remove
the front cover, the low cover under the body of the unit and
terminal cover.
●Remove the cover from the terminal base and screw the
cable.
!
WARNING THIS APPLIANCE MUST BE EARTHED.
Green + Yellow (ground)
FINAL STAGE OF INSTALLATION
1
●The refrigerating pipe 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 insulatin pipe.
●Connect the connecting cord after removing low cover. (Refer to “CONNECTION
OF POWER CORD”)
●After adjustment, fit the connecting cord and pipes into the space available
under the unit. Use holder to hold them tight.
●Be sure to cut the extra binding band. (Otherwise, it may result in abnormal
noise or dewfall.)
INSTALLATION AFTER CONNECTION OF REFRIGERATING PIPES
THE CONNECTION OF REFRIGERATING PIPE DURING THE
INSTALLATION OF INDOOR UNIT
Drain hose
Connecting cord
Pipe
Binding band
Binding band can be
installed to whichever
side of the installation
points. However, it is
recommended to attach it
on the right side viewing
from the rear.
Insulation
pipe (must be
wrapped with
vinyl tape at
every 120mm)
7
Preparation To Install Refrigerating Pipes
●The refrigerating pipes and connecting cord arrangement are attached.
Installation
Hang the Indoor unit onto the hanger. 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 low 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.
1100 mm
below
5mm
Please bend at a small
radius to form an arc
Projection
Hook
about 15cm
Protection
pipe
Connecting cord Connected
section
Drain hose
Wall hole
Refrigerating pipe
Heat insulation pipe
Connecting cord
Drain hose
Pipe
Cable
Drain layout of backward
piping from left
Pull this to the
front during the
connection of
refrigerating pipes
to ease task.
How to Remove the Front Cover How to Attach the Front Cover
1 Remove the front panel 1 After installing the front cover onto the unit, hook three claws at upper
side of the cover securely. Then, push the center of the front cover to
lock the claws.
2 Assemble the cover of electric box.
3 Tighten the 3 screws.
4 Install the filter.
5 Attaching the Front Panel
●Insert the shaft of the left arm along the step on the unit into the
hole.
●Securely insert the shaft of the right arm along the step on the unit
into the hole.
●Make sure that the front panel is securely attached, and then close
the front panel.
2 Remove the filters.
3 After removing 3 screws, remove the cover of electric box, pull the center
of the front cover towards you and release the claws.
4 Pull the side faces (lower sections) of the front cover towards you as
shown in the figure and remove the cover.
1
2
1Push the end of the right-side arm outward to release the tab.
2Move the left-side arm outward to release the left tab, and then pull
the panel towards you.
Arm
Move
Claw
HOW TO REMOVE INDOOR UNIT
2
Claw Claw Claw Screw
Cover
Screw
● 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 as below figure)
[PUSH] mark positions
70mm
10mm
10mm
45mm
1
2
3
Earth
After remove the screw and
the terminal cover, put the
connecting cords and fix the
terminal cover with screw.
Connecting cord
Cord band
●Pull at the 1and 2in the directions
as shown by arrows to remove the cover.
●For cable connection to control P.W.B., you
need to remove front cover and electrical box
cover.
Each connecting location is as below.
1Dry contact: CN6
2H-LINK RAC Adapter: CN7B
3Wired Remote Controller: CN20
●Please check and confirm manuals attached to
each optional parts for more connection details.
●Please check service manual about how to set
from remote controller.
●You can refer to this installation manual how
to remove and re-attach the front cover.
●Please be careful not to damage lead wires
by edge of plate when connecting the optional
parts.
●Please do the operation test after the
connection.
Method to remove the low cover
How to connect the optional parts
(H-LINK RAC Adapter. Dry contact, Wired Remote Controller)
1
2
Preparation of Pipe Heat Insulation and Finish of the Piping
Installation of Drain Hose
Pipe Connection
●Use a pipe cutter to cut the
copper pipe.
13
4
2
●Remove burr and 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.
●Please use exclusive
tool for refrigerant R32
CAUTION
!
A
Trimming tool
Copper pipe
Copper pipe
Die Die
●In case of removing flare nut of a indoor unit, first remove a nut of small diameter
side, or a seal cap of big diameter side will fly out. Free from water into the piping
when working.
●Be sure to tighten the flare nut to the specified torque with a torque wrench.
If the flare nut is overtightened, the nut may be split after a long period has
passed, and may cause a refrigerant leak.
●Please be careful when bending the copper pipe.
●Screw in manually while adjusting the center. After
that, use a torque wrench to tighten the connection.
CAUTION
!
Torque wrench
Wrench
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.
●The connected terminals should be completed sealed with heat insulator
and then tied up with rubber strap.
●Do not tie the terminals with the tape too tight.
If any clearance or over-tightening may cause condensation.
●Please tie the pipe and power line together with vinyl tape as shown in the
figure showing the installation of Indoor and Outdoor units.
●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.
Insulation material for pipe connection
Sleeve of
protection pipe Putty
Putty
Be sure that the drain hose is not loosely connected or bend or proper
condition like left figure.
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.)
Bending upwards Condensed water pond
Ditch Condensed
water pond
Outer Diameter
mm (inch)
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 R32
Clutch type
Conventional flare tool
Outer
dia.of pipe
6.35 (1/4")
9.52 (3/8")
12.70 (1/2")
15.88 (5/8")
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
15.88 (5/8")
Valve
head cap
Torque N·m
(kgf ·cm)
14.0 – 18.0 (140 ~ 180)
33.0 – 42.0 (330 ~ 420)
50.0 – 62.0 (500 ~ 620)
63.0 – 77.0 (630 ~ 770)
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 core cap
Small dia. side
Large dia. side
Bottom Cover Removal and Installation
When connecting the refrigerant pipe, the bottom cover can be removed for
easy installation.
Bottom cover installation
●
Put the 4 claws at front of the bottom cover into the indoor unit notch.
●
Push the left and right claw of bottom cover into the unit.
Indoor unit notch
Bottom cover
Claw
Please remove this spacer as it is
for transportation purposes only.
Vibration and noise might occur if it
is not removed.
CAUTION
!
Flare nut
CAUTION
CAUTION
!
!
HOW TO REMOVE OR ATTACH THE FRONT COVER
< A >

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.
Tools Needed For Installation Work
!
!
WARNING
!
●Carefully read through the procedures of
proper installation before starting installation
work.
●The sales agent should inform customers
regarding the correct operation of installation.
(mark is tool exclusive use for R32)
●+–
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
●
Reamer
●
File
INSTALLATION
MANUAL
SPLIT UNIT AIR CONDITIONER
OUTDOOR UNIT
RAC-VH18PHASV
RAC-VH24PHASV
EN INSTRUCTION MANUAL
FOR SERVICE
PERSONNEL ONLY
Home
Refrigerant pipe size (outer diameter): Narrow pipe, Liquid (ø6.35mm); Wide pipe, Gas (ø12.70mm/ø15.88mm)
●Flare nut must use a torque wrench without fail. Tighten with the specified tightening torque.
If the flare nut is tightened too much, after a long period of time, the flare nut breaks, Gas
leakage, stagnation, touching fire, rarely cause ignition.
●Sharp bending of the pipe use the polyethylene rod, bend not crushed the pipe. Gas leakage
from the crushed part, stagnation, touching fire, rarely cause ignition.
●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.
●A brazed, welded, or mechanical connection shall be made before opening the valves to
permit refrigerant to flow between the refrigerating system parts. A vacuum valve shall be
provided to evacuate the interconnecting pipe and/or any uncharged refrigerating system
part.
●Mechanical connectors used indoors shall comply with ISO 14903. When mechanical connectors
are reused indoors, sealing parts shall be renewed. When flared joints are reused indoors,
the flare part shall be re-fabricated.
●Refrigerant tubing shall be protected or enclosed to avoid damage.
●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 R32. Otherwise, this may result in broken copper
pipes or faults.
●When installing or removing an air conditioner, only specified refrigerant (R32) 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 fire, a poisonous gas may occur. Be aware that refrigerants may not contain
an odour.
●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.
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 1. 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 connecting cord 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.
OUTDOOR UNIT
!
The Choice of Mounting Site (Please note the following matters and obtain permission from customer before installation).
Dimension of Mounting Stand of the Outdoor unit
(unit : mm)
3
Bush
Names of Outdoor Components
QtyNo. Item
Drain Pipe 1
Bush 1
mounting stand
Figure showing the Installation of Outdoor Unit.
●This unit is chargeless up 30m pipe length.
●Installation of pipe length less than minimum
pipe length requirement (3 meters) may
generate an abnormal sound.
CAUTION
1
2
3
CAUTION
!
●A circuit breaker or fuse 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.
●Do not use means to accelerate the defrosting process or to clean, other than those recommended by the
manufacturer. Any unfit method or using incompatible material may cause product damage, burst and serious
injury.
●The appliance/pipe-work shall be stored in a well ventilated room with indoor floor area larger than Amin [refer
to Table 1] and without any continuously operating ignition source. Keep away from open flames, any operating
gas appliances or any operating electric heater. Else, it may explode and cause injury or death.
●The appliance/pipe-work shall be installed, and/or operated in a room with floor area larger than Amin [refer to
Table 1] and keep away from ignition sources, such as heat/spark/open flame or hazardous areas such as gas
appliances, gas cooking, reticulated gas supply systems or electric cooking appliances, etc.
●Do not pierce or burn as the appliance/pipe-work is pressurized. Do not expose the appliance/pipe-work to heat,
flame, sparks, or other sources of ignition. Else, it may explode and cause injury or death.
WARNING
!
!
●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 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).
The indoor piping should
be insulated with the
enclosed insulation
pipe. (If the insulator is
insufficient, please use
commercial products).
Be sure to
completely
seal any gap
with putty. above 100mm
above 300mm
about 400mm
must not bend
Maximum pipe length 30m Minimum pipe length 3m
above 200mm above 100mm
give
clearance
as wide as
possible
above 100mm
above 700mm above 200mm
Figure 1
inner diameter ø 16mm
This symbol shows that this
equipment uses a flammable
refrigerant.
If the refrigerant is leaked,
together with an external
ignition source, there is a
possibility of ignition.
This symbol shows that the
Operation Instructions should
be read carefully.
This symbol shows that a
service personnel should be
handling this equipment with
reference to the Installation
Manual.
This symbol shows that there
is information included in
the Operation Manual and/or
Installation Manual
WARNING
CAUTION
CAUTION
CAUTION
!
BURST HAZARD
Do not allow air, etc. to get
into refrigerant cycle (piping)
RISK OF EXPLOSION
Compressor must be stopped
before removing refrigerant
pipes.
All service valve must be fully
closed after pumping down
operation.
WARNING
Refrigerant piping
must be protected
from physical
damage. Install a
plastic cover or
equivalent.
Flare connection only at outside
of building
WARNING
!
Table 1: Minimum Floor area of the room A
min
(m
2
)
Minimum Floor area of the room
A
min
(m
2
)
RAK-VH18PHASV
RAK-VH24PHASV
Max refrigerant
charge amount
(g)
Max Piping
Length
(m)
Outdoor
Model
RAC-VH18PHASV
RAC-VH24PHASV 30 1500 2.13



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.
BASE
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.
A
DRAIN PIPE
100 mm ABOVE
BUSH BUSH
DRAIN PIPE
Pull downward
WARNING
To fulfill our obligations towards Article 33, in accordance to European REACH Regulation No 1907/2006 EC, we
hereby inform you that this article contains the following Substances of Very High Concern mentioned on the
Candidate list:
●Lead
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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
●Recommend to use
R32 flaring tool.
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.
Trimming tool
Copper pipe
Die
Die
Copper pipe
Flare nut
Torque
wrench
Wrench
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. (Be sure to
use R32 detector)
3
AIR REMOVAL
When the meter reaches - 101KPa (-76cmHg) during
pumping, fully tighten the shuttle.
Closed R32
Valve
Charge hose
Vacuum
pump
adapter
When pumping starts, slightly loosen the flare nut to
check of air sucked in. Then tighten the flare nut.
Lo Hi
Vacuum pump
Manifold valve
Meter showing pressure
Valve
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.
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.
Cap of valve head
Cap of valve head
The body of service valve
Hexagonal
Wrench Key
Cap of valve
core
Outer
Diameter
mm (inch)
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 R32
Clutch type
Conventional flare tool
Outer
dia.of pipe
6.35 (1/4")
9.52 (3/8")
12.70 (1/2")
15.88 (5/8")
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
15.88 (5/8")
Valve
head cap
Torque N·m
(kgf ·cm)
14.0 – 18.0 (140 ~ 180)
33.0 – 42.0 (330 ~ 420)
50.0 – 62.0 (500 ~ 620)
63.0 – 77.0 (630 ~ 770)
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 core cap
Small dia. side
Large dia. side
●Prevent moisture from entering pipe connection.
●Refrigerating machine oil not be applied to the outside of the
flare.
When refrigerating machine oil is applied to the outside of the
flare, excessive tightening of the flare nut, cracking of the flare
nut, destruction of the flare and gas leakage may occur.
●When using the control valve, do not use deteriorated packing.
And, do not overtighten the steering wheel.
Gas leakage from the service valve part, stagnation, touching
fire, rarely cause ignition.
CAUTION
!
1
2
3
4
5
CONNECTION OF POWER CORD
Procedures of Wiring
Indoor Unit Outdoor Unit
Detail of Cutting the Connecting Cord
Connecting cord
●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 wire specified for the use of air-conditioner.
●Please refer to the manual for wire connection and the wiring technique should meet the
standard of the electrical installation.
●There is an AC voltage drop between the LN terminal if the power is on. Therefore, be sure
to remove the plug from its socket.
WARNING
!
WARNING
!
●Leave some space in the connecting cord for
maintenance purpose and be sure to secure it
with the cord band.
●Secure the connecting cord along the coated
part of the wire using the cord band. Do not
exert pressure on the wire as this may cause
overheating or fire.
Wiring of The Outdoor Unit
●Please remove the side plate for wire connection.
WARNING
!
●If you cannot attach the side plate due to the connection cord, please press the connecting cord in
the direction to the front panel to fix it.
●Be sure that the hooks of the side plate is fixed in certainly. Otherwise water leakage may occur
and this causes short circuit or faults.
●The connecting cord should not touch to service valve and pipes. (It becomes high temperature in
heating operation.)
●Before installation, the power source must be checked and necessary wiring work must be completed. To make
the wiring capacity proper, use the wire gauge list below for the wiring from house distribution fuse box to the
outdoor unit in consideration of the locked rotor current.
●Investigate the power supply capacity and other electrical conditions at the
installing 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 unit. In
localities where electrical conditions are poor, use of a voltage regulation
is recommended.
●Install outdoor for the room air conditioner within the reaching range of the
line cord.
Earth terminal
Outdoor supply cords shall not be lighter
than polychloroprene sheathed flexible
cord with code designation 60245 IEC 57.
Wire length
up to 30 m
Wire cross-section
1.5mm2
For (Connecting cord - 1, 2, 3, Earth)
Wire cross-section
2.5 mm2
For (Power cord - L, N, Earth)
!
WARNING THIS APPLIANCE MUST BE EARTHED.
Power cord
Checking for the electric source and the voltage range
Cover
CAUTION
FINAL STAGE OF INSTALLATION
Insulation And Maintenance Of Pipe Connection
●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 figure showing the installation of 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.
1
Insulation material for pipe connection
Putty
Putty
Sleeve of
protection pipe
Power Source And Operation Test
2
Power Source
WARNING
●Never remodel the power plug nor extend the long-
distance cord.
●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.
●The power cable easily generates heat. Do not bring
the cable together with a wire or vinyl tie.
Operation Test
!
Outdoor UnitIndoor Unit
Power line
Green + Yellow
(ground)
Green + Yellow
(ground)
Connecting cord Connecting cord
Strip wires
Strip wires
Green + Yellow
3. Operate the air conditioner for 20 minutes
at least and make sure that the air from the
air conditioner is cool or warm.
4. Press the ON/Off button on the remote
controller to make sure that the air conditioner
stops running.
●If the indication lamps of the indoor unit blink
with sounding the buzzar during the operation
test, perform a check following the procedures
below.
●Before the check and the reoperation, reset the
power supply by turning off and on the circuit
breaker only after:-
1. waiting for at least 5 mintes; or
2. pressing the Temporary Switch Button only
once while the power is OFF.
Indication lamps
blinking mode What to check
All indication
lamps blink three
times repeatedly.
Make sure that the spindles
of both service valves are
open. (Outdoor fan might
operate for near 15 minutes
after the operation stop
for the protection. For the
reoperation at that case, do
it after outdoor fan will stop.)
●Please be sure to measure the supply voltage before
operation test.
●Please ensure that the air conditioner is in normal operating
condition during the operation test.
1. Operate with Cool Mode(in summer) or Heat Mode(in
winter).
2. Press Temperature Button on the remote controller to
set the desired temperature to 16.0°C for Cool Mode or
32.0°C for Heating Mode.
Set the desired fan speed to " "(High).
IMPORTANT
Circuit Breaker
20A
CAUTION
!
CAUTION
!
●Don't operate for over 5 minutes with
the situation that the spindle of the
service valve is closed. This will cause
the defect.
●Don't operate by Cool Mode or Dry
Mode with the door and windows
opened, (the room humidity is always
above 80%) for a long period of
time. Water will condense and drip
down occasionally. This will wet your
furniture.
●Explain to your customer the proper
operation procedures as described in the
user' s manual.
●If the indoor unit won't operate, check
the cable for correct connection.
●Turn on the lamp in the room where the
indoor unit is installed and check the
remote controller for normal operation.
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