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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 side plate by unscrewing the screws as shown below.
WARNING
●
THIS APPLIANCE MUST BE EARTHED.
Power supply shall be connected at the rated voltage, otherwise the unit will be
broken or could not reach the speciÀ ed capacity.
Procedures of Wiring
Detail of cutting the connecting cord
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 and À 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
●
Please refer to the installation manual 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.
Do not make any connection in the middle of the connecting cable. It may cause the
●
wire over heated, emit smoke and À re.
Wiring of The Outdoor Unit
●
Please remove the side plate for wire connection.
●
If you cannot attach the side plate due to the connecting cord, please
press the connecting cord in direction to the front panel to À x it.
Be sure that the hooks of the side plate is À xed in certainly. Otherwise
●
WARNING
water leakage may occur and this causes short circuit or faults.
1
Insulation And Maintenance Of 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 À gure showing the installation of Indoor and
Outdoor units. Then À 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.
3
Power Source And Operation 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 À 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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IA1018: A
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 Á aring, please put on the Á are nut.
Outer
Thickness
Diameter (mm)
6.35 (1/4)
9.52 (3/8)
12.70 (1/2)
15.88 (5/8)
2
Pipe Connection
In case of removing Á are nut of an Indoor unit, À rst remove a nut
CAUTION
of small diameter side, or a seal cap of big diameter side will Á y
out. Prevent water from entering into the piping when working.
Wiring Of The Indoor Unit
For wire connection of the Indoor unit, you need to open or 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".
●
Remove the screw and electrical cover.
Insert the connecting cord (C, D) from the back of unit.
●
●
Fixed the wire to terminal wires À rmly as shown in À gure at right side.
Connect the
earth cord
2
, (fuse = 16A time delay)
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.
Install outlet for the room air conditioner within the reaching range of the line cord.
●
Note:
●
Outdoor supply cords shall not be lighter than
polychloroprene sheathed Á exible cord, 60245 IEC 57.
2
Installation Of Remote Controller
●
The remote controller can be placed in its holder which is
À 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 À xed. The unit will beep
when signal is received from the remote controller. The signal
transmission is weaken by the Á 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 in
À gure beside.
●
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
CAUTION
●
Recommend to use
R410A Á aring tool.
A (mm)
Conventional Á are tool
Flare tool for R410A
(mm)
Clutch type
Clutch type
Wing nut type
~
0.0
0.5
1.0~1.5
1.5~2.0
0.8
~
0.0
0.5
1.0~1.5
1.5~2.0
0.8
~
0.8
0.0
0.5
1.5~2.5
1.0~1.5
~
1.5~2.5
1.0
0.0
0.5
1.0~1.5
Outer
Torque N·m
dia.of pipe
(kgf
·
cm)
Small dia. side
6.35 (1/4")
13.7 – 18.6 (140 – 190)
Large dia. side
9.52 (3/8")
34.3 – 44.1 (350 – 450)
12.7 (1/2")
44.1 – 53.9 (450 – 550)
Small dia. side
19.6 – 24.5 (200 ~ 250)
6.35 (1/4")
Valve
head cap
Large dia. side
19.6 – 24.5 (200 ~ 250)
9.52 (3/8")
29.4 – 34.3 (300 – 350)
12.7 (1/2")
Valve core cap
12.3 – 15.7 (125 ~ 160)
Method to remove electrical cover
Electrical cover
Screw
Connecting cord
After remove the
screw and band,
put the connecting
cords and À x the
band with screw.
CAUTION
IMPORTANT
16A time delay fuse
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.
CAUTION
Reuse of piping R-22 model only apply if previous
model is Hitachi and proper pump down method is used.
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.
3
Removal Of Air From The Pipe And Gas Leakage Inspection
Procedures of using Vacuum Pump for Air Removal
As shown in right À 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.
2
Run the vacuum pump for about 10~15
minutes, then completely tighten the "Lo" knob
and switch off the vacuum pump.
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 Á ow of refrigerant (using
Hexagonal Wrench key).
Re-cap the service valve and tighten using
wrench. Check the cap's periphery if there is
5
any gas leakage. The task is then completed.
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
R410A)
Precautions When Performing Wiring of the
Outdoor Unit
Protective Sheet
Pull out the
Protective Sheet
Pull out the Protective Sheet as
shown without removing it from
the outdoor unit.
Insert the connecting cord
through the hole of the Protective
Fuse Capacity
Sheet.
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 is
stopped.
3
Take out air conditioner unit.
It is advisable to Á ush
the piping with R410A to
avoid any contamination
remain before new
installation.
When the meter reaches - 101KPa (-76cmHg)
during pumping, fully tighten the shuttle.
Meter showing pressure
Closed
Lo
Hi
Manifold valve
Charge hose
Vacuum
Valve
Valve
pump
Vacuum
pump
adapter
When pumping starts, slightly loosen the
Á are nut to check of air sucked in. Then
tighten the Á are nut.
WARNING:
Do not remove or cut the Protective Sheet
NOTE:
Before performing the connection of
the connecting cord to the outdoor unit,
check whether the Protective Sheet is
equipped or not.
If equipped, connection of the connecting
cord shall be performed as below.
If not, perform the connection of the
connecting cord as in "Procedures of
Wiring".
Connect the connecting cord as
shown in "Procedures in Wiring".
Place back
the Protective
Sheet
Place the Protective Sheet back
to its original position as shown.
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.
4
Install New Refrigerant
air conditioner
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