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.
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IA1020: A
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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 aring, please put on the 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 x it.
●
Be sure that the hooks of the side plate is 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.
Wire length
up to
1
6m
up to 15m
up to 25m
Wire gauge
1.5mm
2
2.5mm
2
4.0mm
2
IMPORTANT
●
THIS APPLIANCE MUST BE EARTHED.
Procedures of Wiring
Wiring Of The Outdoor Unit
●
Please remove the side plate for wire connection.
!
WARNING
!
CONNECTION OF POWER CORD
WARNING
!
Power supply shall be connected at the rated voltage, otherwise the unit will be broken
or could not reach the speci ed capacity.
Detail of cutting the connecting cord
To remove the connecting wires for
the indoor unit, please remove the
low cover panel in front of the unit.
Earth terminal
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 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
16A time delay fuse
Fuse Capacity
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
are nut to check of air sucked in. Then
tighten the are nut.
As shown in right 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 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.
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.
!
Top cover
CAUTION
Back cover
Side cover
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 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 are nut of an Indoor unit, rst remove a nut of
small diameter side, or a seal cap of big diameter side will y out.
Prevent water from entering into the piping when working.
Outdoor Unit
Indoor Unit
L
C
N
D
●
Recommend to use
R410A aring tool
!
CAUTION
Note:
●
Outdoor supply cords shall not be
lighter than polychloroprene sheathed
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 (C, D) from the back of unit.
●
Fixed the wire to terminal wires rmly as shown in gure at right side.
Electrical cover
Connecting cord
Screw
Connect the
earth cord
After remove the
screw and band,
put the connecting
cords and x the
band with screw.
FINAL
ST
AGE OF INST
ALLA
TION
Insulation And Maintenance Of Pipe Connection
1
O
The connected terminals should be completed sealed with heat
insulator and then tied up with rubber strap.
O
Please tie the pipe and power line together with vinyl tape as shown
in the gure showing the installation of indoor and outdoor units.
Then x their position with holders.
O
To enhance the heat insulation and to prevent water condensation,
please cover the outdoor part of the drain hose and pipe with
insulation pipe.
O
Completely seal any gap with putty.
Installation Of Remote Controller
2
Power Source And Operation Test
3
O
The remote controller can be placed in its holder which is xed on
wall or beam.
O
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 xed. The unit will beep when signal is
received from the remote controller. The signal transmission is weaken
by the 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
!
O
Please use a new socket. Accident may occur due to the use of
old socket because of poor contact.
O
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.
O
Keep additional length for the power cord and do not render the
plug under external force as this may cause poor contact.
O
Do not x the power cord with U-shape nail.
Operation Test
O
Please ensure that the air conditioner is in normal operating condition
during the operation test.
O
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
gure below.
O
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
Pump Down Method When Reuse
Existing Piping (R22 Model) for
R410A Model
O
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
O
Reuse of piping of R22 model is dangerous
because of its compressor oil.
O
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
O
Piping of R22 model can be reused only when
air-conditioner is properly pumped down.
O
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 4s 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 ush
the piping with R410A to
avoid any contamination
remain before new
installation.
INS RAS-SD13CCT-SX13CCT (EN2) 1
2/26/13 11:44 AM