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Please face this side (suction
Please mount the outdoor
side) of the unit to the wall.
●
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
Pull downward
shown beside.
CAUTION
!
Top cover
Please make sure to remove all
Back cover
spacers inside the unit.
Open the Top, Back and Side
●
cover of the unit.
Pull out the spacers inside.
●
Side cover
(Spacers are only for
transportation purpose).
Spacer
If not remove, vibration and
inside
noise will occur.
CONDENSED WATER DISPOSAL OF OUTDOOR UNIT
There are holes on the base of Outdoor unit for condensed water to
●
exhaust.
In order to fl 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 fi gure. Join the drain pipe to one hole.
At fi 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 fi rmly.
BASE
DRAIN PIPE
BUSH
DRAIN PIPE
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.
WARNING
THIS APPLIANCE MUST BE EARTHED.
!
Must install air conditioner according to the electrical installation standards for
Thailand of the Engineering Institue of Thailand under The Royal Patronage
of His Majesty (the King).
Procedures of Wiring
Indoor Unit
Outdoor Unit
Connecting cord
Power cord
Detail of Cutting the Connecting Cord
Indoor Unit
Outdoor Unit
Strip wires
Strip wires
Green +
Green + Yellow
Yellow
(ground)
Connecting cord
Power line
Green + Yellow
(ground)
!
WARNING
The naked part of the wire core should be 10 mm and fi 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 wire specifi ed for the use of air-conditioner.
●
Please refer to the manual for wire connection and the wiring technique should
●
meet the standard of the electrical installation.
There is an AC voltage drop between the LN terminal if the power is on. Therefore,
●
be sure to remove the plug from its socket.
Insulation And Maintenance
1
Trial run
Of Pipe Connection
●
The connected terminals should be completely
sealed with heat insulator and then tied up with
rubber strap.
Perform a trial run to make sure that
●
Please tie the pipe and power line together with vinyl
the air conditioner operates properly.
tape as shown in the fi gure showing the installation
1. Press the COOL button (in summer) or
of Indoor and Outdoor units. Then fi x their position
with holders.
HEAT button (in winter) of the remote
●
To enchance the heat insulation and to prevent
controller.
water condensation, please cover the outdoor part
2. Press the ROOM TEMPERATURE
of the drain hose and pipe with insulation pipe.
button to set the temperature to 16°C
Completely seal any gap with putty.
●
for cooling mode or 32°C for heating
mode. Set the fan speed to "
(HI).
3. Operate the air conditioner for at least
20 minutes and make sure that the
air from the air conditioner is cool or
warm.
4. Press the STOP button on the remote
controller to make sure that the air
conditioner stops running.
Power Source And
3
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 fi 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.
<
>
IA1890: B
1
Preparation of Pipe
Please
Use a pipe cutter to cut the copper pipe.
●
remove
side cover
when
connecting
the piping
and
connecting
cord.
Jagged edge will cause leakage.
●
Point the side to be trimmed downwards during trimming to prevent copper
●
chips from entering the pipe.
Before fl aring, please put on the fl are nut.
●
Die
Die
Outer
Thickness
Flare tool for R32
Diameter (mm)
(mm)
6.35 (1/4)
0.8
9.52 (3/8)
0.8
12.70 (1/2)
0.8
15.88 (5/8)
1.0
2
Pipe Connection
In case of removing fl are nut of an Indoor unit, fi rst remove a nut of
CAUTION
!
small diameter side, or a seal cap of big diameter side will fl y out.
Prevent water from entering into the piping when working.
Flare nut
BUSH
Small dia. side
Large dia. side
Torque
wrench
Valve
Wrench
head cap
Wiring Of The Indoor 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.
Remove the cover from the terminal base and screw the cable.
●
After remove the
screw and terminal
cover, and put the
connecting cords and
fi x the terminal cover
with screw.
Method to remove electrical cover
Remove the screw and electrical cover.
●
Insert the connecting cord (1, 2, 3) from the back of unit.
●
Fixed the wire to terminal wires fi rmly as shown as below.
●
Electrical cover
Connecting cord
Connecting cord
Screw
WARNING
!
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 fi re.
Installation Of Remote
❖ Be sure to measure
2
the supply voltage
Controller
before plugging the
power cord into the
●
The remote controller can be placed in its holder
power outlet.
which is fi 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 fi xed. The unit will beep when signal is received
from the remote controller. The signal transmission is
weaken by the fl orescent 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 controller should be insert from top into
bottom side of the holder as shown below.
Remote Controller
Screw (2 pieces)
Holder for Remote Controller
3
Trimming tool
Copper pipe
CAUTION
!
Recommend to use
●
R32 fl aring tool
Copper pipe
A (mm)
Conventional fl are tool
Clutch type
Clutch type
Wing nut type
~
1.0 ~ 1.5
0.0
0.5
1.5 ~ 2.0
~
0.0
0.5
1.0 ~ 1.5
1.5 ~ 2.0
~
0.0
0.5
1.0 ~ 1.5
1.5 ~ 2.5
~
0.0
0.5
1.0 ~ 1.5
1.5 ~ 2.5
Outer
Torque N.m
diameter
(kgf
cm)
●
of pipe
6.35 (1/4")
13.7 ~ 18.6 (140 ~ 190)
Please use gas leakage detector
9.52 (3/8")
34.3 ~ 44.1 (350 ~ 450)
to check if leakage occurs at the
12.7 (1/2")
44.1 ~ 53.9 (450 ~ 550)
connection of Flare nut as
49 ~ 58.8 (500 ~ 600)
15.88 (5/8")
shown on the right.
19.6 ~ 24.5 (200 ~ 250)
6.35 (1/4")
Small dia. side
If gas leakage occurs, further
19.6 ~ 24.5 (200 ~ 250)
9.52 (3/8")
tighten the connection to stop
Large dia. side
29.4 ~ 34.3 (300 ~ 350)
12.7 (1/2")
leakage. (Use the detector
29.0 ~ 31.0 (296 ~ 316)
15.88 (5/8")
provided for R32)
12.3 ~ 15.7 (125 ~ 160)
Valve core cap
For cable connection to control P.W.B., you need to remove front cover and
●
electrical box cover.
Each connecting location is as below.
1
Dry contact: CN6
2
H-LINK: CN7
3
Wired Remote Controller : CN20
Please check and confi rm manuals attached to each optional parts for more
●
connection details.
You can refer to this installation manual how to remove and re-attach the
●
front cover.
Please be careful not to damage lead wires by edge of plate when connecting
●
the optional parts.
Cord band
Wiring of The Outdoor Unit
Please remove the side cover for wire connection.
●
Connecting cord
●
!
●
WARNING
●
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 gauge list below for the wiring from house distribution fuse box to the
outdoor unit in consideration of the locked rotor current.
Investigate the power supply capacity and other electrical conditions at the
●
installing 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 unit . In localities
where electrical conditions are poor, use of a voltage regulation is recommended.
Install outdoor for the room air conditioner within the reaching range of the line
●
cord.
For (Power cord - L, N, Earth)
Wire cross-section
2.5 mm
2
For (Connecting cord - 1, 2, 3, Earth)
Wire length
Wire cross-section
up to 30 m
Pump Down Method When Reuse
Existing Piping (R410A Model) for
R32 Model
●
Compressor oil of R410A model is insoluble in
compressor oil of R32 model. The mixing of compressor
oil may cause damage of compressor.
Possibility of Mixing
●
Reuse of piping of R410A model is dangerous because
of its compressor oil.
When reuse piping of R410A model, pump down must
●
be carried out properly to ensure compressor oil which
is remained inside piping is collected away.
CAUTION
!
Reuse of piping R410A model only apply if previous
model is Hitachi and proper pump down method is
used.
To Reuse Old Piping
●
Piping of R410A 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.
Removal Of Air From The Pipe And Gas Leakage Inspection
Procedures of using Vacuum Pump for Air Removal
When the meter reaches - 101KPa (-76cmHg)
As shown in right fi gure, remove the cap of
during pumping, fully tighten the shuttle.
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.
Charge hose
Valve
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.
When pumping starts, slightly loosen the
fl are nut to check of air sucked in. Then
Remove the charge hose and tighten the cap
tighten the fl are nut.
3
of valve core. Check the cap's periphery if
there is any gas leakage.
Completely unscrew the spindle of the
service valve (at 2 places) in anti-clockwise
4
direction to allow the fl ow of refrigerant (using
Hexagonal Wrench key).
Cap of valve
head
Re-cap the service valve and tighten using
5
wrench. Check the cap's periphery if there is
any gas leakage. The task is then completed.
Gas Leakage Inspection
BURST HAZARD
Do not allow air, etc. to get into refrigerant
cycle (piping)
RISK OF EXPLOSION
Compressor must be stopped before
removing refrigerant pipes.
All service valve must be fully closed after
pumping down operation.
How to connect the optional parts
(RAC Adapter, Dry contact, Wired Remote Controller)
If you cannot attach the side plate due to the connection cord, please press the connecting
cord in the direction to the front panel to fi x it.
Be sure that the hooks of the side cover is fi 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.)
CAUTION
IMPORTANT
Outdoor supply cords shall not be lighter than
polychloroprene sheathed fl exible cord with
Circuit Breaker
code designation 60245 IEC 57.
1.5mm
2
20A
Proper Pump Down Method
1
Operate air conditioner at
cooling mode for 10~15
minutes
Most Important
Process
Purpose: To make the
oil & refrigerant mix
together. They are in
separated condition
when air conditioner is
stopped.
3
Take out air conditioner unit.
It is advisable to
fl ush the piping with
R32 to avoid any
contamination remain
before new installation.
Meter showing pressure
Closed
R32
Manifold valve
Valve
Vacuum pump
Vacuum
pump
adapter
The body of
service valve
Cap of valve core
Hexagonal
Wrench Key
Cap of valve head
WARNING
!
Cover
Earth terminal
2
After 10~15 minutes of pre
operation, close 2s valve.
After 3 minutes, close 4s
valve.
Mixed
refrigerant
& oil will be
collected into
outdoor unit.
4
Install New Refrigerant air
conditioner
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