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Hitachi airHome 300 RAK-CJ10CAK Installation Manual page 2

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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.
PURGING OF REFRIGERANT IS
Use the two spanners on
PROHIBITED
the service valve nuts to
Purging of refrigerant will cause the unit
tighten and loosen so that
to be lacked of refrigerant which may
the service valve will not
deform. Gas leak from the
affect the capacity performance and
crushed part, stagnation,
lead to severe dew formation causing
touching fi re, rarely cause
problem such as dew water drop or
ignition.
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 fl are nut on the small pipe side
should be torqued to 122 - 165lbf.in
(140 - 190kgf.cm).
WARNING
!
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
THIS APPLIANCE MUST BE EARTHED.
Must install air conditioner according to the local electrical installation standards.
Procedures of Wiring
In case that power is supplied from Indoor Unit
Detail of cutting the connecting cord
Outdoor Unit
Indoor Unit
When removing the connecting wires for the indoor unit, please remove the low cover panel
in front of the unit.
WARNING
!
The naked part of the wire core should be 10 mm fi x 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 specifi ed 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.
Insulation And Maintenance Of
1
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 fi gure showing the installation of Indoor
and Outdoor units. Then fi x 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.
Power Source And Operation
3
Test
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 fi x 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.
<
>
A
1
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 fl aring, please put on the fl are nut.
Outer
Thickness
Flare tool for R32
Diameter (mm)
(mm)
Clutch type
6.35 (1/4)
0.0
0.8
9.52 (3/8)
0.8
0.0
2
Pipe Connection
CAUTION
!
When removing fl are nut from the Indoor unit, please ensure to use proper
tooling.
Prevent pipe from coming in contact with water or working in wet area.
Small dia. side
Large dia. side
Small dia. side
Valve
head cap
Large dia. side
Valve core cap
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 fi re.
Supply cords, current- carrying conductors become taut
before earthing conductor, if the cord slips out
of the cord band.
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.
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".
After remove the
screw and band, put
the connecting cords
and fi x the band
with screw.
If a wrong supply voltage is applied.
If a 220-240V model is connected to a 100V power
supply, all the indicators of the indoor unit blink. Correct
the voltage of the power outlet (It is not a failure).
Be sure to measure the supply
Trial run
voltage before connecting the
power cord into the power outlet.
Perform a trial run to make sure that the air conditioner
operates properly.
1. Press the COOL button (in summer) or HEAT button (in
winter) of the remote controller.
2. Press the ROOM TEMPERATURE button to set the
temperature to 16°C for cooling mode or 32°C for heating
mode. Set the fan speed to "
" (HI).
3. Operate the air conditioner for at least 20 minutes and
make sure that the air from the air conditioner is cool
or warm.
4. Press the STOP button on the remote controller to make
sure that the air conditioner stops running.
If the indicators of the indoor unit blink during the trial
run, perform a check following the procedures below.
Indicator Blinking Mode
What to check
All indicators blink once
Make sure that the voltage
repeatedly
of the power outlet is
correct according to the
product specifi cation.
All indicators blink twice
Make sure that the
repeatedly.
connecting cord is
connected correctly and
securely.
To reset the power supply by switching the circuit breaker
OFF, and ON only after:-
1. waiting for at least 5 minutes; or
2. pressing the temporary switch button only once while
the power is OFF.
3
Removal Of Air From The Pipe And Gas Leakage Inspection
Procedures of using Vacuum Pump
1
CAUTION
2
Recommend to use
R32 fl aring tool.
3
A (mm)
Conventional fl are tool
4
Clutch type
Wing nut type
~
0.5
1.0~1.5
1.5~2.0
~
0.5
1.0~1.5
1.5~2.0
5
Prevent moisture from entering pipe connection.
Refrigerating machine oil not be applied to the outside
of the fl are.
Outer
Torque N·m
When refrigerating oil is applied to the outside of the
(kgf
·
cm)
dia.of pipe
fl are, cracking of the fl are nut, destruction of the fl are
6.35 (1/4")
13.7 – 18.6 (140 – 190)
and gas leakage may occur due to the excessive
34.3 – 44.1 (350 – 450)
tightening of the fl are nut.
9.52 (3/8")
When using the control valve, do not use deteriorated
6.35 (1/4")
19.6 – 24.5 (200 ~ 250)
packing. And, do not overtighten the steering wheel.
19.6 – 24.5 (200 ~ 250)
Gas leakage from the service valve part, stagnation,
9.52 (3/8")
touching fi re, rarely cause ignition.
12.3 – 15.7 (125 ~ 160)
WARNING
!
Wiring Of The Outdoor Unit
IMPORTANT
Connect the
earth cord
Wire length
Wire gauge
up to 20m
1.5mm
2
2
Installation Of Remote Controller
The remote controller can be placed in its holder which is fi xed
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 fi xed. The unit will beep
when signal is received from the remote controller. The signal
transmission is weaken by the fl uorescent 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.
The controller should be insert from top into bottom side
of the holder as shown below.
WARNING
!
Transport Details Marking and storage Air conditioners
that use fl ammable refrigerants.
Transportation of air conditioners containing
combustible refrigerant
Disposal of air conditioners using flammable
refrigerants
Air conditioning storage
Storage of air conditioners in packaging (not yet sold)
When the meter reaches - 101KPa (-76cmHg)
during pumping, fully tighten the shuttle.
for Air Removal
Meter showing pressure
As shown in right fi gure, remove the cap of
valve core. Then, connect the charge hose.
Remove the cap of valve head. Connect the
Charge hose
vacuum pump adapter to the vacuum pump
Valve
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.
When pumping starts, slightly loosen the
After vacuuming, confi rm that the needle of
fl are nut to check of air sucked in. Then
the manifold gauge is stable for 3~5 minutes.
tighten the fl are nut.
Remove the charge hose and tighten the cap
of valve core. Check the cap's periphery if
there is any gas leakage.
Completely unscrew the spindle of the
service valve (at 2 places) in anti-clockwise
direction to allow the fl ow 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.
Gas Leakage Inspection
Please use gas leakage detector
!
CAUTION
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)
Remove the screw and electrical cover.
Insert the connecting cord (1, 2, 3) from the back of unit.
.
Fixed the wire to terminal wires fi rmly as shown as below
Electrical cover
Connecting cord
Screw
Please remove the side plate for wire connection.
If you cannot attach the side plate due to the connecting cord, press
!
the connecting cord in direction to the front panel to fi x it.
Be sure that the hooks of the side plate is fi xed in certainly. Otherwise
WARNING
water leakage may occur and this causes short circuit or faults.
1
2
Earth terminal
!
CAUTION
IMPORTANT
Note:
Outdoor supply cords shall not be lighter
than polychloroprene sheathed fl exible cord,
60245 IEC 57.
Explanation of symbols displayed on unit
WARNING
This symbol shows that this equipment uses a
fl ammable refrigerant.
If the refrigerant is leaked, together with an
external ignition source, there is a possibility of
ignition.
CAUTION
This symbol shows that the Operation
Instructions should be read carefully.
CAUTION
This symbol shows that a service personnel
should be handling this equipment with
reference to the Installation Manual.
CAUTION
This symbol shows that there is information
included in the Operation Manual and/or
Installation Manual.
WARNING
!
Do not use means to accelerate the defrosting process or to
clean, other than those recommended by the manufacturer. Any
unfi t 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 fl oor area larger than A
(m
) and without any continuously
2
min
operating ignition source. Keep away from open fl ames, 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 fl oor area larger than A
(m
2
) and keep away ignition
min
sources, such as heat/spark/open fl ame 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, fl ame, sparks, or other sources of
ignition. Else, it may explode and cause injury or death.
Closed
Manifold valve
Vacuum
Valve
pump
Vacuum
pump
adapter
3
Fuse Capacity
13A

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