OUTDOOR UNIT
FINAL ST
A
GE 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 figure showing the installation of 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.
Installation Of Remote Controller
2
Power Source And Operation Test
3
●
The remote controller can be placed in its holder which is
fixed 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 fixed. The unit will beep
when signal is received from the remote controller. The signal
transmission is weaken by the fluorescent 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 fix 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.
<
IA364: B
>
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 figure below.
WARNING
●
If you cannot attach the side cover due to the
connecting cord, press the connecting cord in
direction to the front panel to fix it.
●
Be sure that the hooks of the side cover is
fixed 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.)
●
The naked part of the wire core should be 10 mm and fix
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 = 20A 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.
●
Do not make any connection in the middle of the
connecting cable. It may cause the wire overheating, emit
smoke and fire.
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.
IMPORTANT
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
Wiring of The Outdoor Unit
●
Please remove the side cover for wire connection.
!
WARNING
!
CONNECTION OF PO
WER CORD
WARNING
!
How to Remove The Front Cover
Fuse Capacity
20A time delay fuse
1
Remove the front panel.
●
Please remove and attach the
front panel by both hands.
●
After opening the front panel by both hands.
1
1
1
1
1
Undo the right arm while pushing it inside.
2
2
2
2
2
Slide the front panel to right as shown in figure. Then
remove while pulling it to front.
2
Remove the filters.
3
Remove the caps and screws
at the lower portion of the
front cover.
4
Pull the front cover upward as far
as the location where the lower
portion of the front cover is on
the deflector.
5
Remove while pulling the front cover in direction to arrow
as shown in figure to hold the both sides of front cover.
Cap
Screw
Lower portion of front cover
Deflector
How to Attach the Front Cover
1
1
1
1
1
After covering the front cover to the unit, certainly hook at
the upper portion (three places). Then, check that the drain
pan is certainly attached. Push the center of front cover in
the direction of arrow.
2
2
2
2
2
Fix the front cover at lower portion by screws and attach
the caps.
3
3
3
3
3
Attach the front panel.
●
Certainly insert the left shaft of the front panel to the hole
of the front cover. Next insert the right shaft as same as
the left.
4
4
4
4
4
Attach the filters which are placed the surface written
“FRONT” up.
●
After attaching the filters, push the front panel at three
arrow portion as shown in figure and close it.
Hole
Guide
Shaft
Sleeve of
protection pipe
Putty
Putty
Insulation material for pipe connection
Method to remove electrical cover
●
Remove the screw and electrical cover.
●
Insert the connecting cord (C, D) from the bottom of unit.
●
Fixed the wire to terminal wires firmly as shown in
figure at right side.
Wiring Of The Indoor Unit
●
For wire connection of the Indoor unit, you need to remove
front cover and electrical cover.
Method to remove front panel
●
Refer to “FINAL STAGE OF INSTALLATION – How to Remove
The Front Cover”.
AUTO
RESTART
SWITCH
AUTO
RESTART
SWITCH
Screw
Electrical
cover
Screw
1
2
●
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.
●
Open the side plate by unscrewing the screws as shown below.
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
CAUTION
!
Please make sure to remove all spacers inside the unit.
●
Open the Top, Back and Side cover of the unit.
●
Pull out the spacers inside.
(Spacers are only for transportation purpose).
If not remove, vibration and noise will occur.
Top cover
Back cover
Side cover
Remote
Controller
Holder for
Remote Controller
Screw (2 pieces)
Earth terminal
C D
L
N
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 figure, 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 flow of
coolant (using Hexagonal 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 flaring, please put on the flare nut.
Pipe Connection
2
INST
ALLA
TION OF REFRIGERA
TING PIPES AND AIR REMO
VA
L
CAUTION
!
AIR REMO
V
A
L
●
Recommend to use
R410A flaring tool.
CAUTION
!
In case of removing flare nut of an Indoor unit, first remove a nut
of small diameter side, or a seal cap of big diameter side will fly
out. Prevent water from entering into the piping when working.
When the meter reaches - 101KPa
(-76cmHg) during pumping, fully
tighten the shuttle.
Meter showing pressure
Closed
R410A
Manifold valve
Vacuum
pump
Valve
Charge hose
Valve
Vacuum pump
adapter
When pumping starts, slightly loosen the
flare nut to check of air sucked in. Then
tighten the flare nut.
Copper pipe
Trimming tool
A
Die
Die
Copper pipe
Wrench
Torque
wrench
Flare nut
Lo
Hi
The body of
service valve
Cap of
valve core
Hexagonal
Wrench Key
Cap of valve head
Cap of valve head
Power is supplied from Outdoor Unit
D
C
N
L
D
C
Indoor Unit
Outdoor Unit
Connecting Cord
Power Cord
AC 220 - 240V
1.6 or
2.0
2.0
25mm
25mm
10mm
10mm
10mm
35mm
Outdoor Unit
Strip wires
Power line
Control line
GRN + YEL
Connect the
earth cord
After remove the screw
and band, put the
connecting cords and fix
the band with screw.
C
D
Outer
Diameter (mm)
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 flare tool
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
Pump Down Method When Reuse Existing
Piping (R22 Model) for R410A Model
●
Compressor oil of R22 model is insoluble in compressor oil
of R410A model. The mixing of compressor oil may cause
damage of compressor.
Possibility of Mixing
●
Reuse of piping of R22 model is dangerous because of its
compressor oil.
●
When reuse piping of R22 model, pump down must be
carried out properly to ensure compressor oil which is
remained inside piping is collected away.
To Reuse Old Piping
●
Piping of R22 model can be reused only when air-conditioner
is properly pumped down.
●
The purpose of pump down is to collect back the compressor
oil (which is mixed with refrigerant and circulating inside
refrigeration cycle) properly into the outdoor unit of air
conditioner.
Proper Pump Down Method
1
Operate air conditioner
2
After 10~15 minutes of pre
at cooling mode for
operation, close 2s valve.
10~15 minutes.
After 3 minutes, close 4s valve.
Most Important Process
Purpose: To make the oil &
refrigerant mix together.
They are in separated
condition when
air conditioner is
stopped.
Mixed
refrigerant & oil
will be collected
into outdoor
unit.
3
Take out air conditioner
4 Install New Refrigerant air
unit.
conditioner
It is advisable to flush the
piping with R410A to avoid
any contamination remain
before new installation.
Reuse of piping R-22 model only apply if previous model is
Hitachi and proper pump down method is used.
CAUTION
!
