background image

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.

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 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.

  Installation Of Remote Controller

2

  Power Source And Operation Test

3

 The remote controller can be placed in its holder which is 

 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  xed. 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

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  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.

<

IA910: A 

>

The remote controller 
must be slide in
the remote controller 
holder, in the direction 
as shown in the  gure, 
until it hooks at the 
lower end of the remote 
controller holder.

   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

  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 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 220-240V 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.

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.

Cable length

up to 

1

6m

up to 15m

up to 25m

Wire cross-section

1.5mm

2

2.5mm

2

4.0mm

2

IMPORTANT

 THIS APPLIANCE MUST 

BE EARTHED.

Procedures of Wiring

!

WARNING

!

CONNECTION OF POWER CORD

WARNING

!

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

BASE

 Recommend to use 

R410A  aring  tool.

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.

Connect the
earth cord

CONDENSED WATER DISPOSAL OF OUTDOOR UNIT

 

There are holes on the base of Outdoor unit for condensed 
water to exhaust.

  In order to  ow 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 
 gure. 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.

 

When Using and Installing In Cold Areas

  When the air conditioner is used in low temperature and in snowy 

conditions, water from the heat exchanger 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.

A

Earth terminal

N

L

C D

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

  Refer to “FINAL STAGE OF INSTALLATION – How to Remove 

The Front Cover”.

Power supply shall be connected at the rated voltage, otherwise 
the unit will be broken or could not reach the speci ed capacity.

Outdoor Unit

GRN + YEL

Strip wires

Power line

Control line

GRN + YEL

Strip wires

Indoor Unit

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.

 If you cannot attach the side plate due 

to the connecting cord, please 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.

 The connecting cord should not touch to 

service valve and pipes. (It becomes high 
temperature in heating operation.)

Wiring of The Outdoor Unit

 Please remove the side plate for wire connection.

Fuse Capacity

16A time delay fuse

How to remove the Front Cover

 1  Remove the front panel.

 

Pull up the front panel 

  

by holding it at both lower 

  

sides with both hands.

 

When the front panel full 

  

open, pull the inner part of 

  

the right arm outward and 

  

pull the panel forward while 

  

closing it gradually. 

 2  Remove the pre- lters.

 

Push upward to release the claws and pull out the Pre-
 lter.

 3  After removing two caps and two screws, rotate the 

horizontal louver towards you a bit. Then, pull the center 
of the front cover to release the claws.

 4  Pull the side faces (lower sections) of the front cover 

towards you as shown in the  gure and remove the cover.

How to attach the Front Cover

Check to ensure that the drain pan is securely attached.

To install the front cover onto the unit, push two points 
from the center to lock the two claws in the direction as 
shown in the image below. Then, hook the four claws at 
upper side of the front cover securely. 

Tighten the two screws, then attach the two caps.

Install the pre- lters.

5    Slide the shafts on the left then on the right arms of the 

front panel along the step on the front cover. Please insert 
the shafts into the holes untill they stop. After checking 
the shafts are securely inserted, close the front panel.

Method to remove the low cover

 Pull the cover at  

 and  

2

 

in the directions as shown 
by arrows to remove the 
cover.

After remove the screw 
and cover, and put the 
connecting cords and  x 
the cover with screw.

DRAIN PIPE

[For all optional part, please refer catalog for part number]

As for connecting to H-Link, a separately purchased 
RAC Adapter is required.

  To install the wiring the electrical box cover must be opened.

 Connect the connector of RAC adapter to CN7.

 Assemble back the cover of electrical box.

 Please refer to the respective user manual of RAC Adapter 

for further details.

 Please be careful not to damage lead wires by edge of 

plate when connecting the optional parts.

[For all optional part, please refer catalog for part number]

Connection to the electrical box:

 Remove the cover of electrical box.

 Connect the connector of wired remote controller to CN9.

 Assemble back the cover of electrical box.

 Please refer to the respective user manual of wired remote 

controller for further details.

 Please be careful not to damage lead wires by edge of 

plate when connecting the optional parts.

WIRED REMOTE CONTROLLER

H-LINK

How To Connect The Optional Parts

(RAC Adapter, Wired Remote Control)

CN7

RAC Adapter cord

CN9

Wired remote 
controller cord

100 mm 

ABOVE

BUSH

BUSH

DRAIN PIPE

Trimming tool

Copper pipe

Die

Die

Copper pipe

Flare nut

Torque
wrench

Wrench

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. (Be sure to use R410A detector)

3

AIR REMOV

AL

When the meter reaches - 101KPa 
(-76cmHg) during pumping, fully 
tighten the shuttle.

Closed
R410A

Valve

Charge hose

Vacuum pump
adapter

When pumping starts, slightly loosen the 
 are nut to check of air sucked in. Then 
tighten the  are nut.

Lo

Hi

Vacuum 
pump

Manifold valve

Meter showing pressure

Valve

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” 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

Cap of valve head

Cap of valve head

The body of 
service valve

Hexagonal 
Wrench Key

Cap of valve 
core

Outer
Diameter 
mm (inch)

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

dia.of pipe

6.35 (1/4")

9.52 (3/8")

12.70 (1/2")
15.88 (5/8")

6.35 (1/4")

9.52 (3/8")
12.7 (1/2")

Valve 

head cap

Torque N·m

(kgf 

·

 cm)

14.0 – 18.0 (140 – 180)

33.0 – 42.0 (330 – 420)
50.0 – 62.0 (500 – 620)
63.0 – 77.0 (630 – 770)

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

Indoor Unit

Outdoor Unit

Connecting Cord

Connecting Cord

Wired remote controller

RAC Adapter

Insulation material for pipe connection

Putty

Putty

Sleeve of 
protection pipe

Screw (2 pieces)

Remote 
Controller 
Holder

Remote
Controller

Claw

View A

View A

Hole

Shaft

Front panel

Pre- lter

Horizontal louver

Cap

Screw

Claw

After insertion

Before insertion

Claws

Screw

Cap

Front cover

CAUTION

Outdoor supply cords shall not be lighter 
than polychloroprene sheathed  exible cord 
with code designation 60245 IEC 57. 

IMPORTANT

(EN2) INS RAK-50PPA-RAC-50WPA   1

1/17/13   5:27 PM

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