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Please mount the Outdoor unit of 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. Reinstall the side cover in the reverse order of the removal.
Please face this side (suction side)
Please remove side cover
of the unit to the wall.
when connecting the piping
and connecting cord.
Pull downward
RAC-X18HAK
CONDENSED WATER DISPOSAL OF OUTDOOR UNIT
There is holes on the base of Outdoor unit for condensed water to exhaust.
In order to flow condensed water to the drain, the unit is installed on a stand or a
block so that the unit is 100mm above the ground as shown figure. Join the drain
pipe to one hole.
Cover the drain hole with a bush. To install the bush, put it on the drain hole as
shown in the figure and press the both sides of the bush to fit into the hole.
After installation, check whether the drain pipe and bush cling to the base firmly.
BASE
DRAIN HOLE
above
100mm
BUSH
DRAIN HOLE
Push
Push
Install the outdoor unit horizontally and make sure that condensate drains away.
When removing flare nut of the indoor unit, first remove the nut of small diameter
side.
Otherwise the nut of big diameter side will fly out.
Prevent water from entering into the piping when connecting.
Be sure to tighten the flare nut to the specified torque with a torque wrench.
If the flare nut is overtightened, it may split after sometime and may cause refrigerant leak.
When using a control valve, make sure that the packing is not deteriorated and
avoid excessive tightening of the handle. Otherwise, gas may leak from the service
valve.
3
Removal Of Air From The Pipe And Gas Leakage Inspection
From the viewpoint of global environment
protection, air purge type should be vacuum
pump method.
Fully tighten the " Hi " shuttle of the
manifold valve and completely unscrew
the "Lo" shuttle. Run the vacuum pump.
2
(Adapter is switched on)
After pumping for about 10 -15 minutes,
completely loosen the " Lo " shuttle and
switch off the vacuum pump . (Adapter is
switched off)
Meter showing pressure
Make sure the meter
reaches -0.1MPa (-76cmHg)
Closed
during pumping.
R410A Manifold valve
When pumping starts, slightly loosen
Valve
the flare nut to check if air sucked in.
Ball valve
Vacuum pump
Charge hose
Vacuum pump adapter
Please leave the ball valve fully
Ball valve
open at all times.
Gas Leakage Inspection
Please use gas leakage detector
to check if leakage occurs at
connection of Flare nut as shown
on the right.
If gas leakage occurs , further tighten the
connection to stop leakage. (Be sure to use
R410A detector.)
Wiring for the horizontal piping from the right side.
Not to interfere with the
drain hose, fold the cable at
the drain hose side of the
electric box as shown in the
left figure, and pass the
Cable
cable just over the electric
box and pull it out.
Pipe
Drain
Piping and drain hose layout
hose
Electric box
Power
cord
Form the cable properly so that the
'
low cover won
t touch the cable in
installation.
Wiring of the Outdoor Unit
Please remove the side cover and terminal cover for wiring connection.
WARNING
The connecting cord must be fix with cord band
Otherwise rain water may enter and cause short circuit. Besides, an external
forcemay apply to the connection part of the connecting cord and could result
in heat and fire.
The terminal cover and side cover must be installed after work is
done.
CAUTION
Outdoor supply cords shall not be lighter than polychloroprene
sheathed flexible cord with code designation 60245 IEC 57.
<
>
: A
E4340B
In case of using in chilly area
Especially, in case that there are many snows by very cold in chilly area, condensed
water freezes on the base and may result not to drain. In this case, please remove
the bush and the drain pipe at the bottom of unit. (Left and center near discharge
portion of air, each 1 place). It becomes smooth drain.
Ensure that the distance from the drain hole to the ground is 250 mm or more.
Force-cooling operation
When the service switch of the outdoor unit is pressed for 1 or
more seconds, the force-cooling operation starts. Use this mode
when performing the failure diagnosis or collecting refrigerant into
the outdoor unit.
Screw
CAUTION
Do not touch the suction
port, bottom surface, or
aluminum fin of the outdoor
Cover
unit.
Failure to do so may cause
an injury.
Do not operate the unit for more than 5 minutes while the
spindle of the service valve is closed.
BUSH
DRAIN PIPE
CAUTION
Remove the valve head cap
of the service valve.
Remove the cap of valve core
1
and connect the charge hose.
Connect the vacuum pump
adapter to the vacuum pump
and connect the charge hose
to the adapter.
Cap of valve core
Loosen the spindle of the service valve with small diameter
by 1 / 4 turn and tighten the spindle immediately after 5 to 6
3
seconds.
Remove the charging hose from the service valve.
Body of service valve
Unscrew the spindle of both the
Cap of
service valves in anticlockwise
valve core
direction to allow the flow of
4
Hexagonal
wrench key
refrigerant (unscrew halfway).
Tighten the cap of valve head.
Check and make sure that there
is no gas leakage.
Works to be done when transferring or removing air conditioner
From the viewpoint of global environment protection, refrigerant
should be recovered (pumped down) when the air conditioner is
transferred or removed.
Perform force-cooling operation for about 5 minutes as a
preliminary operation.
Tighten the spindle of the service valve at small diameter side in
clockwise direction.
Continue the force-cooling operation for another 1-2 minutes, and
then tighten the spindle of the service valve at large diameter side
in clockwise direction.
Stop the force-cooling operation.
Method to remove the low cover
Pull at the and
in the directionsas
shown by arrows to remove the cover.
Cable
Pipe
Drain
Power cord
Terminal marking
A B C D
Cord band
IMPORTANT
Fuse Capacity
25A time-delay fuse
Service switch (If the switch is pressed
for more than 1 second, the force-
cooling operation starts. If the switch
is pressed for additional more than 1
second, the operation stops.)
CAUTION
Procedures of Wiring
Indoor Unit
Line cord
Valve head cap
for the service
valve at small
diameter side
If the supply cord is damaged, it must be replaced by a special cord (Maker's service parts) available from the manufacturer
Valve head
or its service agent.
cap for the
The naked part of the wire core should be 10mm fix it to the terminal tightly. Then try to pull the individual wire to check if the
service valve
at large
contact is tight. Improper insertion may burn the terminal.
diameter side
Be sure to use only wire specified for the use of air-conditioner.
Please refer to the manual for wire connection, the wiring technique should meet the standard of the electrical
installation.
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 fire.
There is a AC voltege of 220V between the A and B terminals. Therefore, before servicing, be sure to remove the plug from
the AC outlet.
Wiring Of The I ndoor 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.
Cap of valve
Remove the cover from the terminal base and screw the cable.
head
Cap of valve
D
Connecting cord
head
C
B
Connecting cord
A
After remove the screw
and terminal cover, and
put the connecting cords
and fix the terminal cover
with screw.
1
Insulation And Maintenance Of Pipe Connection
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 plastic tape
as shown in the figure of installation of both the indoor and
outdoor units. Then fix 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.
Insulation material for pipe connection
2
Earth Line And Circuit Breaker
erminal cover
The earth line terminal of the outdoor unit is below the
service valve.
To avoid short circuit, it is necessary to install circuit breaker
depending on the mounting location of the unit.
Do not place earth line near the following objects:
(1) Water pipe
(2) Gas pipe — There is danger of catching fire.
(3) The earth line of lightning conductor and telephone —
short circuit may occur during lightning.
1
Preparation of Pipe
Use a pipe cutter to cut the pipe and remove burr.
Remove burr
If burr is not removed, it may cause leakage.
Point the side to be trimmed downwards during trimming to prevent copper
chips from entering the pipe.
Before flaring,please put on the flare nut.
Die
Please use exclusive tool for refrigerant R410.
A (mm) Rigid Flaring Tool
Outer Diameter
(ø)
For R410A tool
6.35 (1/4 )
0~0.5
12.7 (1/2")
0~0.5
2
Pipe Connection
Remove the flare nut from the pipe of the indoor unit by removing the flare nut (female
side) with a spanner while holding down the half union (male side) with a spanner.
Do not crush the pipe while bending it.
Apply refrigerant oil on the connection part. After carrying out the center alignment
and manual tightening of the flare nut, tighten the flare nut securely with a torque
wrench (spanner).
Half union
Male side
Wrench
* Tightening torque must be as shown in the table below.
Small diameter side
Large diameter side
Valve
Small diameter side
head
cap
Large diameter side
Valve core cap
Detail of Cutting the Connecting Cord
Indoor Unit
Outdoor Unit
30mm
Green + Yellow
10mm
10mm
ø2.0
70mm
Outdoor Unit
Connecting Cord
30mm
10mm
ø1.6 or ø2.0
Green + Yellow
WARNING
Securely screw in the power cord and connecting cord so that it will not get
loose or disconnect.
Tightening torque reference value: 1.2 to 1.6 N ·m (12 to 16 kgf·cm)
Excessive tightening may damage the interior of the cord requiring replacement.
When putting two connecting cords
through the band.
Screw
Earth
Connecting cord
Terminal cover
After wiring the indoor unit, make sure to reattach the
Screw
terminal cover.
3
Power Source And Operation Test
Power Source
Do not alter the plug of power cord.
Do not make extension to the power cord.
Sleeve of
Please use a new socket. Accident may occur due to the
protection
pipe
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
Putty
the plug under external force as this may cause poor
contact.
Do not fix the power cord with U-shape nail.
CAUITON
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.
Trimming tool
Copper pipe
CAUTION
Die
A
Copper pipe
For R22 tool
1.0
1.0
Flare nut
Female side
Torque wrench
Outer diameter
Torque N•m
f o
p
p i
e
(
) ø
k (
f g
c •
m
)
6.35(1/4")
12.7(1/2")
44.1-53.99 (450~550)
6.35(1/4")
12.7(1/2")
29.4 -
34.3 (
300~350)
30mm
10mm
Strip wires
30mm
10mm
Strip wires
Insulating plate
Cord band
WARNING
WARNING
CAUTION
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