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.
<
IA1265: B
>
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.
Pipe Connection
2
INST
ALLA
TION OF REFRIGERA
TING PIPES
AND
AIR REMOV
AL
CAUTION
!
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.
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 gauges list
below for the lead-in from a pole transformer and for the wiring from a switch
board of fuse box to the outlet in consideration of the locked rotor current.
●
Investigate the power supply capacity and other electrical
conditions at the installation location.
Depending on the model of room air conditioner to be installed,
request the customer to make arrangements for the necessary
electrical work etc.
The electrical work includes the wiring work up the outlet.
In localities where electrical conditions are poor, use of a
voltage regulation is recommended.
●
Install outlet for the room air conditioner within the reaching
range of the line cord.
●
THIS APPLIANCE MUST BE EARTHED.
Wiring Of The Outdoor Unit
●
Please remove the side plate for wire connection.
!
WARNING
!
CONNECTION OF POWER CORD
WARNING
!
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”.
●
The naked part of the wire core should be 10 mm and
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 power cables approved from the authorities in your country. For example
in Germany: Cable type: NYM 3x1.5mm
2
, (fuse = 16A time delay)
●
Please refer to the following for wire connection to the terminals of the units. The cabling
must meet the standards of electrical installation.
●
There is a AC voltage of 220V between the L and N terminals. Therefore, before servicing,
be sure to remove the plug from the AC outlet or switch off the main switch.
IMPORTANT
13A
Circuit Breaker
Removal Of Air From The Pipe And Gas Leakage Inspection
3
Procedures of using Vacuum Pump for Air Removal
AIR REMOV
AL
When the meter reaches - 101KPa (-76cmHg)
during pumping, fully tighten the shuttle.
Lo
Hi
Meter showing pressure
Closed
Manifold valve
Vacuum
pump
Valve
Charge hose
Valve
When pumping starts, slightly loosen the
fl
are nut to check of air sucked in. Then
tighten the
fl
are nut.
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
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.
2
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.
Remove the charge hose and tighten the cap
of valve core. Check the cap’s periphery if
there is any gas leakage.
4
5
1
3
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.
Outer
Diameter (mm)
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 R410A
Clutch type
Conventional
fl
are tool
Outer
diameter
of pipe
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
Valve core cap
Torque N.m
(kgf
●
cm)
13.7 ~ 18.6 (140 ~ 190)
34.3 ~ 44.1 (350 ~ 450)
44.1 ~ 53.9 (450 ~ 550)
19.6 ~ 24.5 (200 ~ 250)
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
head cap
Small dia. side
Large dia. side
CAUTION
!
In case of removing
fl
are nut of an Indoor unit,
fi
rst remove a nut of
small diameter side, or a seal cap of big diameter side will
fl
y out.
Prevent water from entering into the piping when working.
●
Recommend to use
R410A
fl
aring tool
!
CAUTION
Note:
●
Outdoor supply cords shall not be
lighter than polychloroprene sheathed
fl
exible cord, 60245 IEC 57.
Pull downward
Vacuum
pump
adapter
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
fi
rmly as shown in
fi
gure at right side.
Electrical cover
Connecting cord
Screw
FINAL
ST
AGE OF INST
ALLA
TION
Insulation And Maintenance Of Pipe Connection
1
●
The connected terminals should be completed sealed with heat
insulator and then tied up with rubber strap.
●
Please tie the pipe and power line together with vinyl tape as shown
in the
fi
gure showing the installation of indoor and outdoor units.
Then
fi
x their position with holders.
●
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.
Installation Of Remote Controller
2
Power Source And Operation Test
3
●
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
orescent 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.
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.
The controller should
be insert from top into
bottom side of the
holder as shown in
fi
gure beside.
Pump Down Method When Reuse
Existing Piping (R22 Model) for
R410A Model
●
Compressor oil of R22 model is insoluble in
compressor oil of R410A model. The mixing
of compressor oil may cause damage of
compressor.
Possibility of Mixing
●
Reuse of piping of R22 model is dangerous
because of its compressor oil.
●
When reuse piping of R22 model, pump
down must be carried out properly to ensure
compressor oil which is remained inside piping
is collected away.
To Reuse Old Piping
●
Piping of R22 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.
Reuse of piping R-22 model only apply if
previous model is Hitachi and proper pump
down method is used.
CAUTION
!
Proper Pump Down Method
1
Operate air conditioner
at cooling mode for
10~15 minutes
2
After 10~15 minutes of
pre operation, close 2s
valve. After 3 minutes,
close 3s valve.
3
Take out air conditioner unit.
4
Install New Refrigerant
air conditioner
Most Important Process
Purpose: To make the
oil & refrigerant mix
together. They are in
separated condition when
air conditioner is
stopped.
Mixed
refrigerant
& oil will be
collected into
outdoor unit.
It is advisable to
fl
ush
the piping with R410A to
avoid any contamination
remain before new
installation.
Wire length
up to 25m
Wire gauge
1.5mm
2
IMPORTANT
1) Please ensure tape attached at the unit for transportation are
removed before do installation. (Discolouring or paint damage
might be happened if expose to the sun).
2) Please make sure to remove all spacers inside the unit.
●
Open the Top, Back, Side cover and Cabinet of the unit.
●
Pull out the spacers inside.
(Spacers are only for transportation purpose).
If not remove, vibration and noise will occur.
!
CAUTION
Top cover
Back cover
Tape
Tape
Side cover
Procedures of Wiring
In case that power is supplied from Indoor Unit
When removing the connecting wires for the indoor unit, please remove the low cover panel
in front of the unit.
Outdoor Unit
Detail of cutting the connecting cord
Indoor Unit
Earth terminal
2
1
3
Connect the earth cord
After remove the screw
and band, put the
connecting cords and
fi
x
the band with screw.
●
How to check pipe bending.
– Compare bended pipe with the picture below.
– If bended pipe is not good enough, cut bended area and
bend it again.
a all areas are smooth, no notching area
b no scratch or mark inside
c all have the same length
d phase of bending is too long
e slanting
f there are scratches around bending area
g crack
h different
length
i sample of bending pipe cannot be used
INS RAS-VX13CET (EN2) 1
INS RAS-VX13CET (EN2) 1
4/29/15 12:12 PM
4/29/15 12:12 PM
