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. (Use the
detector provided for R410A)
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” 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
Remove the charge hose and tighten the cap
of valve core. Check the cap’s periphery if
there is any gas leakage.
3
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.
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
!
AIR REMOV
AL
INST
ALLA
TION OF REFRIGERA
TING PIPES
AND
AIR REMOV
AL
●
Recommend to use
R410A aring 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.
Lo
Hi
4
5
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 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.)
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.
●
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.
●
THIS APPLIANCE MUST BE EARTHED.
Procedures of Wiring
Wiring of The Outdoor Unit
●
Please remove the side cover for wire connection.
!
!
In case that power is supplied from Outdoor Unit
Earth terminal
N C D
Power supply shall be connected at the rated voltage, otherwise the unit will be
broken or could not reach the speci ed capacity.
L
●
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
.
●
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.
!
Outdoor
Unit
GRN + YEL
Strip wires
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
FINAL
ST
AGE OF INST
ALLA
TION
CONNECTION OF POWER CORD
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.
Power Source And Operation Test
2
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
external force as this may cause poor contact.
●
Do not x the power cord with U-shape nail.
<
IA952: A
>
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.
Power line
Control line
Use 16A Time
Delay Fuse
Trimming tool
Copper pipe
Die
Die
Copper pipe
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
Flare nut
Torque
wrench
Wrench
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
Cap of valve head
Cap of valve head
The body of
service valve
Hexagonal
Wrench Key
Cap of valve
core
Indoor Unit
Outdoor Unit
Connecting Cord
Connecting Cord
Insulation material for pipe connection
Putty
Putty
Sleeve of
protection pipe
CAUTION
Outdoor supply cords shall not
be lighter than polychloroprene
sheathed exible cord with code
designation 60245 IEC 57.
WARNING
WARNING
CAUTION
CAUTION
CAUTION
Manifold valve
Vacuum
pump
Charge hose
Valve
Vacuum pump
adapter
Valve
Closed
R410A
Meter showing pressure
INS RAC-25-35-50NPA (EN) 2
3/30/13 9:22 AM