Hitachi airHome 400 User manual

INSTALLATION
MANUAL
SPLIT UNIT AIR CONDITIONER
INDOOR UNIT
RAK-DH24PCAST
OUTDOOR UNIT
RAC-DH24PCAST
EN INSTRUCTION MANUAL
FOR SERVICE
PERSONNEL ONLY
Home
1
2
about 450mm
6
4
3
Screw for Mounting Plate
(4.1x32)
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.
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 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.
●
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.
INDOOR UNIT
Names of Indoor Components
Direction of Piping
OUTDOOR UNIT
Be sure to
completely
seal any
gap with
putty.
There are 6 directions
allowed, namely, horizontally
perpendicular to the unit,
vertically down from right,
horizontally out from right,
horizontally out to left,
horizontally out to right,
vertically down from left.
< IA2184: B >
Screw for holder of
Remote Controller
(3.1x16)
AAA Size Battery
Mounting Plate
Qty
No. Component’s Name
1
6
1
2
2
Remote Controller
!
!
!
!
Dimension of Mounting Stand
of the outdoor unit
(unit : mm)
1
2
3
4
5
61
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.
●
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.
●
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 end of the refrigerating pipes are at locations
marked with “ ” symbol.
Installation of Drain Hose
3
Installation
Hang the Indoor unit onto the mounting plate. Use the temporary stand at
the back of the Indoor unit to push its lower part 15cm forwards.
●Place the drain hose through the hole on the wall.
●Wrap the refrigerating pipes with insulation pipe after connecting refrigerating
pipe.
●Connect the connecting cord after removing electrical cover. (Refer to
“Connection of Power Cord”)
●After adjustment, the connecting cord and refrigerating pipes are placed
into the space available under the Indoor unit.
●The projection of Indoor unit must hook to the mounting plate.
INDOOR UNIT
Pipe Connecting cord
Drain hose
Binding band
Insulation pipe (must
be wrapped with vinyl
tape at every 120 mm)
Binding band can be
installed to whichever
side of the installation
recommended to attach
it on the right side
viewing from the rear.
points. However, it is
1100 mm
about 15cm
Hook
Projection
Protection
pipe
Connecting cord Connected
Bottom
cover
section
Drain hose
Claw
Indoor unit notch
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)
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).
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
!
CAUTION
Condensed water may leak out if not
inserted properly.
Figure showing the Installation of Indoor and Outdoor Unit.
Above
100mm
CAUTION
●
Do not guide the drain hose to places where corrosive gases (sulfur, ammonia, etc.) are generated,
such as septic tanks and sewer.
Corrosive gas may flow backward from the drain hose to the indoor unit, corrode the copper pipe, or
it may cause offensive odors in the room.
●
Cut the drain hose at a position 100 mm higher than the floor surface. It may cause water leakage
due to air lock or clogging of foreign matter.
!
CAUTION
●
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.
●
Mechanical connectors used indoor
shall comply with ISO 14903.
When mechanical connectors are
reused indoors, sealing parts shall
be renewed. When flare joints are
reused indoors, the flare part shall
be re-frabricated.
●
Refrigerant tubing shall be protected
or enclosed to avoid damage.
!
●Flare connection only at
outside of building
WARNING
!
●Installation of pipe length less than
minimum pipe length requirement
(3 meters) may generate an
abnormal sound.
CAUTION
!
Refrigerant piping
must be protected
from physical
damage. Install a
plastic cover or
equivalent.
In case the pipe length is more than the recommended length for chargeless,
add refrigerant R32 as below. Do not exceed the maximum pipe length.
CAUTION
!
72
Purifying Filter
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
●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.
●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.
●Must install air conditioner according to the electrical installation standards for Thailand of
the Engineering Institue of Thailand under The Royal Patronage of His Majesty (the King).
●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.
●A circuit breaker 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.
●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
!
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.
●+–Screwdriver ●Measuring Tape
●Knife ●Saw ●Pipe Cutter
●Hexagonal Wrench Key ( 4mm)
●Power Drill (ø 65mm ~ ø 80mm)
●Vacuum Pump ●Pliers or Wrench
●Torque Wrench ●Vacuum Pump Adaptor
●Flare Tool ●Gas Leakage Detector
●Manifold Valve ●Charge Hose
●Reammer ●File
< IA2184: B >
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
Holder for Remote
Controller
Refrigerating pipe
Heat insulation pipe
Connecting cord
Wall hole
Drain hose
Pipe
Drain layout of backward
piping from left
Cable
RAC-DH24PCAST
1.35kg 1.72m2
Model Factory
charge R32
Indoor
Amin (m
2
)
Chargeless
up to
Maximum
charge R32
Additional
R32
30m –1.35kg
42.5mm
660mm
15mm
294mm
950mm
145mm
65
36mm
105mm
145mm
67mm
115mm
Level Screw for mounting plate
Mounting plate
Wall hole
Weight
Line
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.
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.
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.
!
CAUTION
kept max. 20m.
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).
●Remove the cap for
drain hose installation
Drain cap

< IA2184: B >
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 R32)
Preparation of Pipe
●Use a pipe cutter to cut the copper pipe.
●Jagged edge will cause leakage.
●Point the side to be trimmed downwards during trimming to prevent copper
chips from entering the pipe.
●Before flaring, please put on the flare nut.
Pipe Connection
2
INSTALLATION OF REFRIGERATING PIPES AND AIR REMOVAL
●Recommend to use
R32 flaring tool.
●When removing flare nut from the Indoor unit, please ensure to use proper
tooling.
●Prevent pipe from coming in contact with water or working in wet area.
1
Outer
dia.of pipe
6.35 (1/4")
12.7 (1/2")
6.35 (1/4")
12.7 (1/2")
Valve
head cap
Torque N·m
(kgf ·cm)
13.7 – 18.6 (140 – 190)
44.1 – 53.9 (450 – 550)
19.6 – 24.5 (200 ~ 250)
29.4 – 34.3 (300 ~ 350)
12.3 – 15.7 (125 ~ 160)
Small dia. side
Large dia. side
Valve core cap
Small dia. side
Large dia. side
CAUTION
CAUTION
!
!
Outer
Diameter (mm)
6.35 (1/4)
12.70 (1/2)
1.0~1.5
1.0~1.5
Clutch type
A (mm)
1.5~2.0
1.5~2.5
Wing nut type
Thickness
(mm)
0.8
0.8
0.0 ~0.5
0.0 ~0.5
Flare tool for R32
Clutch type
Conventional flare tool
CONNECTION OF POWER CORD
Removal Of Air From The Pipe And Gas Leakage Inspection
3
When the meter reaches - 101KPa (-76cmHg)
during pumping, fully tighten the shuttle.
Lo Hi
Meter showing pressure
Closed
R32
Manifold valve
Vacuum
pump
Valve
Charge hose
Valve
When pumping starts, slightly loosen the
flare nut to check of air sucked in. Then
tighten the flare nut.
Vacuum
pump
adapter
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 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 installation location.
Depending on the model of room air conditioner to be installed,
request the customer to make arrangements for the necessary
electrical work etc.
The electrical work includes the wiring work up the outdoor. In
localities where electrical conditions are poor, use of a voltage
regulation is recommended.
THIS APPLIANCE MUST BE EARTHED.
WARNING
WARNING
!
When removing the connecting wires for the
indoor unit, please remove the low cover panel
in front of the unit.
●The naked part of the wire core should be
10 mm 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.
Wire length
up to 30m
Wire gauge
1.5mm2
IMPORTANT
IMPORTANT
16A
Fuse Capacity
!
CAUTION
Note:
●Outdoor supply cords shall not be
lighter than polychloroprene sheathed
flexible cord, 60245 IEC 57.
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
● Please refer to Instruction Manual – “Removing the Front Panel”
under “Cleaning of Front Panel”.
Connect the
earth cord
After remove the
screw and band, put
the connecting cords
and fix the band
with screw.
Method to remove electrical cover
●Remove the screw and electrical cover.
●Insert the connecting cord (1, 2, 3) from the back of unit.
●Fixed the wire to terminal wires firmly as shown as below.
Connecting cord
Electrical cover
Screw
WARNING
●If you cannot attach the side plate due to the connecting
cord, press the connecting cord in 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.
Wiring Of The Outdoor Unit
●Please remove the side plate for wire connection.
!
Procedures of Wiring
In case that power is supplied from Indoor Unit
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.
●Supply cords, current- carrying conductors
become taut before earthing conductor, if
the cord slips out of the cord band. 23Earth terminal
1
Procedures of using Vacuum Pump
for Air Removal
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.
After vacuuming, confirm that the needle of
the manifold gauge is stable for 3~5 minutes.
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.
●Prevent moisture from entering pipe connection.
●Refrigerating machine oil not be applied to the outside
of the flare.
When refrigerating oil is applied to the outside of the
flare, cracking of the flare nut, destruction of the flare
and gas leakage may occur due to the excessive
tightening of the flare nut.
●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
!
Must install air conditioner according to the electrical installation
standards for Thailand of the Engineering Institue of Thailand
under The Royal Patronage of His Majesty (the King).
Outdoor Unit
Detail of cutting the connecting cord
Indoor Unit
HOW TO REMOVE OR ATTACH THE FRONT COVER
How to Remove the Front Cover
1 Remove the front panel
1 Push the end of the right-side arm outward to release the tab.
2 Move the left-side arm outward to release the left tab, and then pull the
panel towards you.
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.
Claw
1
2
Arm
Move
How to Attach the Front Cover
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.
Claw Claw Claw
Screw
Cover
Screw
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 as below figure)
[PUSH] mark positions
Please remove this spacer as it is
for transportation purposes only.
Vibration and noise might occur if it
is not removed.
CAUTION
!
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 service valve cover by unscrewing the screws as shown
below.
WARNING
●Use the two spanners on
the service valve nuts to
tighten and loosen so that
the service valve will not
deform. Gas leak from the
crushed part, stagnation,
touching fire, rarely cause
ignition.
WARNING
!
PURGING OF REFRIGERANT IS
PROHIBITED
Purging of refrigerant will cause the unit
to be lacked of refrigerant which may
affect the capacity performance and
lead to severe dew formation causing
problem such as dew water drop or
splashing from the unit.
When connecting pipes. If you tighten
the flare nut by excess torque, the
service valve on the small pipe side
may be broken.
The flare nut on the small pipe side
should be torqued to 122 - 165lbf.in
(140 - 190kgf.cm).
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.
FINAL STAGE OF INSTALLATION
Insulation And Maintenance
Of Pipe Connection
1
●The connected terminals should be completely sealed with
heat insulator and then tied up with rubber strap.
●Please tie the pipe and power line together with vinyl tape
as shown in the 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.
●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 fluorescent light. Therefore, during
the installation of the remote control holder, please switch on the
light, even during day time, to determine the mounting location
of the holder.
Pump Down Method When Reuse
Existing Piping (R410A Model) for R32
Model
Proper Pump Down Method
1 Operate air conditioner at cooling mode for 10~15 minutes
Most Important Process
Purpose: To make the oil & refrigerant mix together. They
are in separated condition when air conditioner is stopped.
2 After 10~15 minutes of pre operation, close 2s valve. After
3 minutes, close 3s valve.
Mixed refrigerant & oil will be collected into outdoor unit.
3 Take out air conditioner unit.
It is advisable to flush the piping with R32 to avoid any
contamination remain before new installation.
4 Install New Refrigerant air conditioner
●Compressor oil of R410A model is insoluble in compressor
oil of R32 model. The mixing of compressor oil may cause
damage of compressor.
Possibility of Mixing
●Reuse of piping of R410A model is dangerous because of its
compressor oil.
●When reuse piping of R410A model, pump down must be carried
out properly to ensure compressor oil which is remained inside
piping is collected away.
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 below.
Reuse of piping R410A model only apply if previous model
is Hitachi and proper pump down method is used.
CAUTION
!
To Reuse Old Piping
●Piping of R410A model can be reused only when air-conditioner
is properly pumped down.
●The purpose of pump down is to collect back the compressor
oil (which is mixed with refrigerant and circulating inside
refrigeration cycle) properly into the outdoor unit of air
conditioner.
WARNING
Explanation of symbols displayed on unit
CAUTION
CAUTION
CAUTION
●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 floor area larger than Amin(m2) 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(m2) and keep away
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 is pressurized. Do not
expose the appliance to heat, flame, sparks, or other sources
of ignition. Else, it may explode and cause injury or death.
WARNING
!
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.
Installation Of Remote
Controller
2
Perform a trial run to make sure that the air
conditioner operates properly.
1. Operate with Cooling Mode.
2. Press the ROOM TEMPERATURE button to set the
temperature to 16°C for cooling mode. Set the fan
speed to “ ” (High).
3. Operate the air conditioner for at least 20 minutes
and make sure that the air from the air conditioner
is cool.
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.
Trial run ❖Be sure to measure the
supply voltage before
connecting the power cord
into the power outlet.
●To reset the power supply by switching the circuit
breaker OFF, and ON only after
●waiting for at least 5 minutes; or
●pressing the temporary switch button only once
while the power is OFF.
Indicator Blinking Mode What to check
Make sure that the voltage
of the power outlet is
correct according to the
product specification.
Make sure that the
connecting cord is
connected correctly and
securely.
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.)
All indicators blink
once repeatedly
All indicators blink
twice repeatedly.
All indication lamps
blink three times
repeatedly.
●If connecting cord cable connection is not correct,
the timer lamp may blink 12 times or blink 21
times during the operation test. If this occurs,
check the connection of the connecting cord
cable. Please check the service guide for details.
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.