OUTDOOR UNIT
Removal Of Air From The Pipe And Gas Leakage Inspection
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.
FINAL
ST
AGE OF INST
ALLA
TION
Insulation And Maintenance Of Pipe Connection
1
●
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 gure showing the installation of Indoor and
Outdoor units. Then
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
x
ed 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
x
ed. The unit will beep
when signal is received from the remote controller. The signal
transmission is weaken by the 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.
Power Source
!
●
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 e
x
ternal force as this may cause poor contact.
●
Do not
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.
●
E
x
plain to your customer the proper operation
procedures as described in the user’s manual.
<
IA857: A
>
The controller must
be hooked onto the
hook at the lower
part of the holder.
Push in the remote
controller in the
direction as shown
in gure below.
3
Procedures of using Vacuum Pump for Air Removal
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” shuttle of the
manifold valve and completely unscrew
the “Lo” shuttle. Run the vacuum pump
for about 10–15 minutes, then completely
tighten the “Lo” shuttle 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
coolant (using He
x
agonal Wrench key).
3
Remove the charge hose and tighten
the cap of valve head. Check the cap’s
periphery if there is any gas leakage.
The task is then completed.
4
1
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
!
AIR REMOV
AL
●
THIS APPLIANCE MUST BE EARTHED.
CONNECTION OF POWER CORD
●
Please be careful when bending the copper pipe.
●
Screw in manually while adjusting the center. After that, use of torque wrench to
tighten the connection.
WARNING
!
In case that power is supplied from Indoor Unit
How to Remove The Front Cover
●
Please use e
x
clusive
tool
!
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.
When the meter reaches - 101KPa
(-76cmHg) during pumping, fully
tighten the shuttle.
When pumping starts, slightly loosen the
are nut to check of air sucked in. Then
tighten the are nut.
How to Attach the Front Cover
Sleeve of
protection pipe
Putty
Putty
●
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.
Outer
Diameter (mm)
6.35
9.52
12.70
For R410A tool
0.0
~
0.5mm
0.0
~
0.5mm
0.0
~
0.5mm
For R22 tool
A (mm)
1.0mm
1.0mm
1.0mm
Power line
Control line
Outer
dia.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
head 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 core cap
Small dia. side
Large dia. side
HITACHI
OFF
O
OFF
O
CAUTION
CAUTION
●
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 e
x
ample in Germany:
Cable type: NYM 3
x
1.5mm
2
.
●
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 an AC voltage drop between the L and N terminals if power is on. 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 overheating,
emit smoke and re.
!
WARNING
Procedures of Wiring
WARNING
●
If you cannot attach the side cover 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 cover is
x
ed in certainly.
Otherwise water leakage may occur and this causes short
circuit or faults.
●
The connecting cord should not touch to service valve and
pipes. (It becomes high temperature in heating operation.)
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 bo
x
to the main switch and outdoor unit in
consideration of the locked rotor current.
Cable length
up to
1
6m
up to 15m
up to 25m
Wire cross-section
1.6mm
2
2.5mm
2
4.0mm
2
IMPORTANT
Wiring of The Outdoor Unit
●
Please remove the side cover for wire connection.
!
Wiring Of The Indoor Unit
●
For wire connection of the Indoor unit, you need to remove low cover and front cover.
Method to remove front cover.
●
Refer to “FINAL STAGE OF INSTALLATION – How to Remove The Front Cover”.
Method to remove the low cover
●
Pull the cover at 1 and 2 in the directions as shown by arrows to
remove the cover.
CAUTION
Lo
Hi
Meter showing pressure
Closed
Manifold valve
Vacuum
pump
Valve
Charge hose
Valve
Vacuum pump
adapter
CONDENSED WATER DISPOSAL OF OUTDOOR UNIT
There are holes on the base of Outdoor unit for condensed
water to e
x
haust.
In order to ow condensed water to the drain, the unit must be installed
as shown. The unit must be 100mm and above the ground. Join the drain
pipe to one hole.
At rst insert one portion of the hook to the base (Portion A), then pull the
drain pipe in the direction shown by the arrow while inserting the hook
into the base. After installation, check whether the drain pipe cling to the
base rmly.
Drain Pipe
9
A
DRAIN PIPE
BASE
When Using and Installing In Cold Areas
When the air conditioner is used in low temperature and in snowy conditions,
water from the heat e
x
changer may freeze on the base surface to cause
poor drainage. When using the air conditioner in such areas, do not install
the bushings. Keep a minimum of 250mm between the drain hole and the
ground. When using the drain pipe, consult your sales agent.
For more details, refer to the installation
Manual for Cold Areas.
Fuse Capacity
10A time delay fuse
After remove the screw
and cover, and put the
connecting cords and
x
the cover with screw.
●
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.
C D
Fuse Capacity
15A time delay fuse
For RAC-14LH1 only
IMPORTANT
Outdoor supply cords shall not be lighter
than polychloroprene sheathed e
x
ible
cord with code designation 60245 IEC 57.
CAUTION
!
10mm
100mm ABOVE
FRONT
W
ALL
BRACKET
BACK
Ensure that the front side
of unit is higher than the
back by 10mm
GRN + YEL
Strip wires
Outdoor
Unit
Indoor
Unit
1
Check that the drain pan is securely attached.
2
After installing the front cover onto the unit, hook three
claws at upper side of the cover securely. Then, push the
center of the front cover to lock the claws.
3
Tighten the two screws.
4
Connect the wire connector. Close the electrical cover.
5 Install
the
lter.
6
Slide the shafts of the right and left arms on the washable
panel along the steps to insert the shafts into the holes
till they stop. After checking that the shafts are securely
inserted, close the panel.
1 Remove the front panel.
●
Please remove and attach the front panel by both hands.
●
After opening the front panel by both hands.
1
Undo the right arm while pushing it inside.
2
Slide the front panel to right as shown in gure. Then
remove while pulling it to front.
2 Remove the lters.
3 Open the electrical cover. Disconnect the wire connector.
4 After removing two screws, pull the center of the front
cover towards you and release the claws.
5 Pull the side faces (lower sections) of the front cover
towards you as shown in the gure and remove the
cover.
GRN + YEL
(EN2) INS RAS-8-10-14LH2(B) 1
3/20/12 9:59 AM
