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1
Preparation of Pipe
●
Use a pipe cutter to cut the copper pipe.
Trimming tool
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 Á aring, please put on the Á are nut.
●
Die
Die
●
Recommend to use
R410A Á aring tool.
Copper pipe
A (mm)
Outer
Thickness
Flare tool for R410A
Diameter
(mm)
mm (inch)
Clutch type
Clutch type
~
6.35 (1/4")
0.0
0.5
0.8
~
0.0
0.5
9.52 (3/8")
0.8
~
12.70 (1/2")
0.8
0.0
0.5
~
15.88 (5/8")
1.0
0.0
0.5
●
THIS APPLIANCE MUST BE
WARNING
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
In case that power is supplied from Indoor Unit
Indoor Unit
30mm
10mm
10mm
GRN + YEL
0mm
Strip wires
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
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 a AC voltage of 230V 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 main switch
and outdoor unit in consideration of the locked rotor current.
IMPORTANT
Cable length
Wire cross-section
up to 16m
1.5mm
2
up to 15m
2.5mm
2
up to 25m
4.0mm
2
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.
●
<
>
IA942: A
2
Pipe Connection
In case of removing Á are nut of an Indoor
unit, À rst remove a nut of small diameter
side, or a seal cap of big diameter side will
Á y out. Prevent water from entering into the
CAUTION
piping when working.
Outer
dia.of pipe
Small dia. side
6.35 (1/4")
Large dia. side
9.52 (3/8")
12.70 (1/2")
15.88 (5/8")
Small dia. side
6.35 (1/4")
Valve
head cap
Large dia. side
9.52 (3/8")
12.7 (1/2")
Valve core cap
Conventional Á are tool
Wing nut type
1.0~1.5
1.5~2.0
1.0~1.5
1.5~2.0
1.0~1.5
1.5~2.5
1.0~1.5
1.5~2.5
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".
Method to remove the low cover
Pull the cover at
1
and
●
shown by arrows to remove the cover.
After remove the screw
and cover, and put the
connecting cords and À x
the cover with screw.
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 remote controller
must be slide in
the remote controller
holder, in the direction
as shown in the À gure,
until it hooks at the
lower end of the remote
controller holder.
Screw (2 pieces)
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.
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 of valve core. Check the cap's periphery
3
Torque N·m
if there is any gas leakage.
(kgf
·
cm)
14.0 – 18.0 (140 – 180)
Completely unscrew the spindle of the service valve (at 2 places) in anti-clockwise
4
33.0 – 42.0 (330 – 420)
direction to allow the Á ow of refrigerant (using Hexagonal Wrench key).
50.0 – 62.0 (500 – 620)
63.0 – 77.0 (630 – 770)
Re-cap the service valve and tighten using wrench. Check the cap's periphery if there
5
19.6 – 24.5 (200 ~ 250)
is any gas leakage. The task is then completed.
19.6 – 24.5 (200 ~ 250)
29.4 – 34.3 (300 – 350)
12.3 – 15.7 (125 ~ 160)
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)
SWITCH SETTING TO SELECT 1.8kW
OR 1.2kW CAPACITY
CAUTION
Before setting the switch, make sure to turn OFF power
supply and then set the position of the switch otherwise
will cause damage to the Main PCB.
2
in the directions as
SWITCH POSITION
Connect the
earth cord
NOTE:
FACTORY default setting is at 1.8kW capacity.
This setting is applicable for RAK-18QPA only.
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-À lters.
Remote
Controller
●
Push upward to release the claws and pull out the Pre-
À lter.
Remote
Controller
3 After removing two caps and two screws, rotate the
Holder
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 À gure and remove the cover.
Horizontal louver
Cap
Screw
How To Connect The Optional Parts
(RAC Adapter, Wired Remote Control)
Wired remote controller
Wired remote
controller cord
[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.
●
CAPACITY SELECTION
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
1.2kW
for further details.
Please be careful not to damage lead wires by edge of
●
plate when connecting the optional parts.
1.8kW
WIRED REMOTE CONTROLLER
[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.
How to attach the Front Cover
Front panel
1
Check to ensure that the drain pan is securely attached.
2
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.
Cap
Pre-À lter
3
Tighten the two screws, then attach the two caps.
4
Install the pre-À 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.
Front cover
When the meter reaches - 101KPa
(-76cmHg) during pumping, fully
tighten the shuttle.
Meter showing pressure
Closed
R410A
Lo
Hi
Manifold valve
Charge hose
Valve
Vacuum
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.
The body of
service valve
Cap of valve
core
Hexagonal
Wrench Key
Cap of valve head
Cap of valve head
RAC Adapter
CN7
CN9
RAC Adapter cord
H-LINK
View A
Claws
Claw
View A
Before insertion
Claw
Screw
After insertion
Hole
Shaft
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