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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 electrical installation standards for
Thailand of the Engineering Institue of Thailand under The Royal Patronage
of His Majesty (the King).
Procedures of Wiring
In case that power is supplied from Indoor Unit
Detail of cutting the connecting cord
50
Outdoor Unit
A
B
40
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.
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A
INS RAK/RAC-BJ10PCAST (EN) (SOFT).indd 2
INS RAK/RAC-BJ10PCAST (EN) (SOFT).indd 2
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 fl aring, please put on the fl are nut.
●
Outer
Thickness
Diameter (mm)
(mm)
6.35 (1/4)
9.52 (3/8)
2
Pipe Connection
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.
●
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.
Installation Of Remote
If a wrong supply voltage is applied.
2
●
If a 220-240V model is connected to a 100V power
Controller
supply, all the indicators of the indoor unit blink.
Correct the voltage of the power outlet (It is not a
failure).
●
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
❖ Be sure to measure the
Trial run
supply voltage before
ensure that the unit can receive signal transmitted
connecting the power cord
from the controller at the place where the holder is to
into the power outlet.
be fi xed. The unit will beep when signal is received
from the remote controller. The signal transmission
Perform a trial run to make sure that the air
is weaken by the fluorescent light. Therefore,
conditioner operates properly.
during the installation of the remote control holder,
1. Press the COOL button (in summer) or HEAT button
(in winter) of the remote controller.
please switch on the light, even during day time,
2. Press the ROOM TEMPERATURE button to set the
to determine the mounting location of the holder.
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
The controller should be insert from top into
and make sure that the air from the air conditioner
bottom side of the holder as shown below.
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
Make sure that the
once repeatedly
voltage of the power
outlet is correct
according to the product
specifi cation.
All indicators blink
Make sure that the
twice repeatedly.
connecting cord is
connected correctly and
securely.
●
To reset the power supply by switching the circuit
breaker OFF, and ON only after:-
Transport Details Marking and storage Air
1. waiting for at least 5 minutes; or
conditioners that use fl ammable refrigerants.
2. pressing the temporary switch button only once
while the power is OFF.
Transportation of air conditioners containing
●
combustible refrigerant
Disposal of air conditioners using fl ammable
●
refrigerants
Air conditioning storage
●
Storage of air conditioners in packaging
●
(not yet sold)
CAUTION
!
Recommend to use
●
R32 fl aring tool.
A (mm)
Conventional fl are tool
Flare tool for R32
Clutch type
Clutch type
Wing nut type
~
1.0~1.5
1.5~2.0
0.8
0.0
0.5
~
0.0
0.5
1.0~1.5
1.5~2.0
0.8
!
CAUTION
Outer
Torque N·m
(kgf
·
cm)
dia.of pipe
Small dia. side
6.35 (1/4")
13.7 – 18.6 (140 – 190)
Large dia. side
34.3 – 44.1 (350 – 450)
9.52 (3/8")
Small dia. side
6.35 (1/4")
19.6 – 24.5 (200 ~ 250)
Valve
head cap
Large dia. side
19.6 – 24.5 (200 ~ 250)
9.52 (3/8")
12.3 – 15.7 (125 ~ 160)
Valve core cap
WARNING
!
Connect the
IMPORTANT
earth cord
Wire length
up to 25m
Pump Down Method When Reuse
Existing Piping (R410A Model) for R32 Model
●
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.
!
CAUTION
Reuse of piping R410A model only apply if previous
model is Hitachi and proper pump down method is used.
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.
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
WARNING
!
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 fl ush the piping with R32 to avoid any
contamination remain before new installation.
4
Install New Refrigerant air conditioner
3
Removal Of Air From The Pipe And Gas Leakage Inspection
Procedures of using Vacuum Pump for Air Removal
As shown in right fi gure, remove the cap of
valve core. Then, connect the charge hose.
1
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
2
minutes, then completely tighten the "Lo" knob
and switch off the vacuum pump.
After vacuuming, confi rm that the needle of
the manifold gauge is stable for 3~5 minutes.
Remove the charge hose and tighten the cap
3
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
4
direction to allow the fl ow of refrigerant (using
Hexagonal Wrench key).
Re-cap the service valve and tighten using
5
wrench. Check the cap's periphery if there is
any gas leakage. The task is then completed.
!
CAUTION
Prevent moisture from entering pipe connection.
●
Refrigerating machine oil not be applied to the outside
●
of the fl are.
When refrigerating oil is applied to the outside of the
fl are, cracking of the fl are nut, destruction of the fl are
and gas leakage may occur due to the excessive
tightening of the fl are 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 fi re, rarely cause ignition.
Remove the screw and electrical cover.
●
Insert the connecting cord (A, B) from the back of unit.
●
Fixed the wire to terminal wires fi rmly as shown as below.
●
Electrical cover
Connecting cord
Screw
Wiring Of The Outdoor Unit
Please remove the side plate for wire connection.
●
!
WARNING
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
●
water leakage may occur and this causes short circuit or faults.
Earth terminal
CAUTION
!
Note:
Wire gauge
Outdoor supply cords shall not be
●
lighter than polychloroprene sheathed
2
1.5mm
fl exible cord, 60245 IEC 57.
Explanation of symbols displayed on unit
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.
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.
!
●
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
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
ignition 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.
When the meter reaches - 101KPa (-76cmHg)
during pumping, fully tighten the shuttle.
Meter showing pressure
Closed
Manifold valve
Charge hose
Vacuum
Valve
Valve
pump
Vacuum
pump
adapter
When pumping starts, slightly loosen the
fl are nut to check of air sucked in. Then
tighten the fl are nut.
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)
B
A
IMPORTANT
Fuse Capacity
10A
WARNING
CAUTION
CAUTION
CAUTION
WARNING
(m
) and without any continuously
2
min
(m
) and keep away
2
min
2023-10-24 8:48 PM
2023-10-24 8:48 PM
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