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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.
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.
Pull downward
Use the two spanners of the service valve fl are nut and
●
tighten, loosen so that the service valve will not deform. Gas
leak from the crushed part, stagnation, touching fi re, rarely
cause ignition.
!
WARNING
THIS APPLIANCE MUST BE EARTHED.
●
Procedures of Wiring
Detail of cutting the connecting cord
Outdoor Unit
Indoor 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
If a wrong supply voltage is applied.
1
Pipe Connection
If a 220-230V 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).
●
The connected terminals should be completely
sealed with heat insulator and then tied up with
rubber strap.
Trial run
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
●
Perform a trial run to make sure that the air
water condensation, please cover the outdoor part
conditioner operates properly.
of the drain hose and pipe with insulation pipe.
1. Press the COOL button (in summer) or HEAT button
(in winter) of the remote controller.
●
Completely seal any gap with putty.
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 "
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.
Power Source And Operation
Indicator Blinking Mode
3
Test
All indicators blink
once repeatedly
Power Source
(220-230V model).
!
CAUTION
All indicators blink
●
Please use a new socket. Accident may occur
twice repeatedly.
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
●
To reset the power supply by switching the circuit
completely plugged into the socket.
breaker OFF, and ON only after
●
Keep additional length for the power cord and
●
waiting for at least 5 minutes; or
do not render the plug under external force as
●
pressing the temporary switch button only once
this may cause poor contact.
while the power is OFF.
●
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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>
IA1994: A
1
Preparation of Pipe
Use a pipe cutter to cut the copper pipe.
●
!
CAUTION
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)
0.8
0.0
~
9.52 (3/8)
0.8
0.0
~
12.70 (1/2)
0.8
0.0
~
15.88 (5/8)
1.0
0.0
2
Pipe Connection
In case of removing fl are nut of an Indoor unit, fi rst remove a nut of
!
CAUTION
small diameter side, or a seal cap of big diameter side will fl y out.
Prevent water from entering into the piping when working.
Small dia. side
Large dia. side
Small dia. side
Valve
head cap
Large dia. side
Valve core cap
Wiring Of The Indoor Unit
For wire connection of the Indoor unit, you need to remove the front
●
cover, the low cover under the body of the unit and terminal cover.
Remove the cover from the terminal base and screw the cable.
●
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 as below.
●
Electrical cover
Connecting cord
Screw
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 fi re.
Supply cords, current- carrying conductors
●
become taut before earthing conductor, if
the cord slips out of the cord band.
For (Power cord - L, N, Earth)
IMPORTANT
Wire cross-section
Circuit Breaker
2.5 mm
2
16A
Installation Of Remote
2
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
❖ Be sure to measure the
●
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
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.
" (HI).
The controller should be insert from top into
bottom side of the holder as shown below.
What to check
Make sure that the
voltage of the power
outlet is correct
according to the product
specifi cation.
Make sure that the
connecting cord is
connected correctly and
securely.
3
Removal Of Air From The Pipe And Gas Leakage Inspection
Procedures of using Vacuum Pump for Air Removal
1
2
Recommend to use
●
R32 fl aring tool
A (mm)
3
Conventional fl are tool
Clutch type
Wing nut type
1.0 ~ 1.5
0.5
1.5 ~ 2.0
0.5
1.0 ~ 1.5
1.5 ~ 2.0
4
0.5
1.0 ~ 1.5
1.5 ~ 2.5
0.5
1.0 ~ 1.5
1.5 ~ 2.5
5
Outer
Torque N.m
diameter
(kgf
cm)
●
of pipe
Prevent moisture from entering pipe connection.
●
●
Refrigerating machine oil not be applied to the outside
6.35 (1/4")
13.7 ~ 18.6 (140 ~ 190)
of the fl are.
9.52 (3/8")
34.3 ~ 44.1 (350 ~ 450)
When refrigerating machine oil is applied to the
12.7 (1/2")
44.1 ~ 53.9 (450 ~ 550)
outside of the fl are, excessive tightening of the fl are
49 ~ 58.8 (500 ~ 600)
15.88 (5/8")
nut, cracking of the fl are nut, destruction of the fl are
19.6 ~ 24.5 (200 ~ 250)
6.35 (1/4")
and gas leakage.
When using the control valve, do not use deteriorated
9.52 (3/8")
19.6 ~ 24.5 (200 ~ 250)
●
29.4 ~ 34.3 (300 ~ 350)
packing. And, do not overtighten the steering wheel.
12.7 (1/2")
29.0 ~ 31.0 (296 ~ 316)
Gas leakage from the service valve part, stagnation,
15.88 (5/8")
touching fi re, rarely cause ignition.
12.3 ~ 15.7 (125 ~ 160)
Wiring Of The Outdoor Unit
Please remove the side cover for wire connection.
●
If you cannot attach the side plate due to the
●
connecting cord, please press the connecting
!
cord in the direction to the front panel to fi x
it.
WARNING
Be sure that the hooks of the side cover 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 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 installing 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
unit. In localities where electrical conditions are poor, use of
a voltage regulation is recommended.
Install outdoor for the room air conditioner within the reaching
●
range of the line cord.
!
Note:
For (Connecting cord - 1, 2, 3, Earth)
Outdoor supply cords shall not
●
Wire length
Wire cross-section
be lighter than polychloroprene
sheathed fl exible cord with code
up to 20m
1.5mm
2
designation, 60245 IEC 57.
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.
When the meter reaches - 101KPa (-76cmHg)
during pumping, fully tighten the shuttle.
As shown in right fi gure, remove the cap of
Meter showing pressure
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.
Charge hose
Valve
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, confi rm that the needle of
the manifold gauge is stable for 3~5 minutes.
When pumping starts, slightly loosen the
fl are nut to check of air sucked in. Then
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)
CAUTION
!
●
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 fi re if fl ammable
gas leaks around it.
Do not install the indoor unit in a machine shop or
●
kitchen where vapor from oil or its mist fl ows 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.
Observe the rules and regulations of the electrical
●
installation and the methods described in the installation
manual when dealing with the electrical work. Use power
cables approved by the authorities of your country.
Be sure to use the specifi ed 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 fi re.
CAUTION
Proper Pump Down Method
1
Operate air conditioner at
2
After 10~15 minutes of pre
cooling mode for 10~15
operation, close 2s valve.
minutes
After 3 minutes, close 4s
valve.
Most Important
Process
Purpose: To make the
oil & refrigerant mix
together. They are in
separated condition
when air conditioner is
stopped.
3
4
Take out air conditioner unit.
It is advisable to
fl ush the piping with
R32 to avoid any
contamination remain
before new installation.
Closed
Lo
Hi
R32
Manifold valve
Valve
Vacuum pump
Vacuum
pump
adapter
Mixed
refrigerant
& oil will be
collected into
outdoor unit.
Install New Refrigerant air
conditioner
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