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4. Wiring
Prepare the power source for exclusive with the air conditioner.
The supply voltage must comply with the rated voltage of the air conditioner:
For electrical work,follow the local national wiring standard ,regulation and this installation
instructions.
Power Source
Power switch and Fuse rating
50Hz 220-240V
~
30A
1. OUTDOOR INSTALLATION PRECAUTION
Install the outdoor unit on a rigid base to prevent increasing noise level and vibration.
Determine the air outlet direction where the discharged air is not blocked.
In the case that the installation place is exposed to strong wind such as a seaside
operation by putting the unit lengthwise along the wall or using a dust or shield plates.
Specially in windy area, install the unit to prevent the admission of wind.
If need suspending installation, the installation bracket
should accord with technique requir-ement in the
installation bracket diagram. The installation wall
should be solid brick, concrete or the same intensity
construction, or actions to reinforce, damping ,supporting
should be taken. The connection between bracket and wall,
bracket and the air conditioner should be firm, stable and reliable.
3. REFRIGERANT PIPING CONNECTION
1. Flaring
1. Cut a pipe with a pipe cutter.
90 C
Oblique Roughness
2. Insert a flare nut into a pipe and flare the
pipe.
A(mm)
Outer diam.
(mm)
Max.
Min.
6.35
1.3
0.7
9.53
1.6
1.0
12.7
1.8
1.0
1. AIR PURGE
Choose purge method from the table:
Connective
Air purging
Additional amount of
pipe length
method
refrigerant to be charged
Use vacuum pump
Less than 5m
~
5 20m
Use vacuum pump
(L-5M) 15g
CAUTION IN HANDING THE PACKED VALVE
Open the valve stem until it hits against the stopper.
Do not try to open it further.
Securely tighten the valve stem cap with a spanner
or the like.
Valve stem cap tightening torque.
When relocate the unit to an other place , perform
evacuation using vacuum pump.
Perform evacuation of the two indoor units
according to the following methods.
2. GAS LEAK CHECK
Make sure no gas come out from connections with leak detector or soap water.
Indoor unit
check point
Outdoor unit
check point
INDOOR UNIT INSTALLATION
Wire Specification
2
2.5mm
OUTDOOR UNIT INSTALLATION
2
Strong
wind
2. Tightening Connection
Align pipes to be connected.
Sufficiently tighten the flare nut with fingers,
and then tighten it with a spanner and torque
Burr
wrench as shown.
CAUTION
Excessive torque can break nut depending
on installation conditions.
Outer
Tightening
Additional tightening
diam.
torque(N.cm)
torque(N.cm)
1570
1960
6.35mm
(160kgf.cm)
(200kgf.cm)
2940
3430
9.53mm
(300kgf.cm)
(350kgf.cm)
3500
4410
12.7mm
(400kgf.cm)
(450kgf.cm)
AIR PURGE AND TEST OPERATION
3
Outdoor unit
Gas side
Packed valve
When Using the Vacuum Pump
(For how to use a manifold valve, refer to its Owner's
Manual)
1. Connect the Manifold Valve Charge Hose to the Low
Pressure Valve Charge Hole (With all the Low/High
Pressure Valves tightened)
2. Connect the Charge Hose to the Vacuum Pump.
3. Fully open the Handle Lo of the Manifold Valve.
4. Start the Vacuum pump. Slightly loose the Flare Nut of
the Low Pressure Valve to check if there is any air
leakage. (Sound of the Vacuum Pump changed and
the Compound Meter indicates "o" instead of minus).
Then tighten the Flare Nut.
5. After the evacuation is complete, full close the handle
Lo of the manifold valve and stop the operation of the
vacuum pump.
m k
j i h
n
f
A
e
d
B
c
b
C
a
CAUTION
Perform the wiring with sufficient capacity. Installation places legally require a short circuit isol-
ator to be attached to prevent electrical shock.
Do not extend the power cable code by cutting.
Power voltage should in the range of 90% 110% of rated voltage.
The plug of the air conditioner takes a grounding leg, so clients should use a grounding socket
so that the air conditioner can be grounded efficiently.
The power cord must be earthed reliably.
2. DRAIN ELBOW INSTALLATION
Seal
Drain elbow
X X
Connection Cable
10mm
Terminal block of outdoor unit
N N
L L
Grounding
Wiring
Unit A
Unit B
Connective cable
Connective cable
of indoor unit and
of indoor unit and
outdoor unit
outdoor unit
Indoor unit A
Flare nut
Indoor unit
Stopper
Cap
Valve body
Half union
Valve stem
3. TEST OPERATION
Perform test operation after completing gas leak check at the flare nut connections
and electrical safety check.
1. Connect the unit to power, then push the ON/OFF button on the Remote controller
to start the test operation.
2. Press the MODE button to check if the unit runs normally on every mode.
3. Test operation according to the following procedure when you could not find the
Remote Controller.
Open the panel, move the Manual switch on
the control panel to COOL.
4. Press COOL again after test operation. Then
installer should explain how to manipulate, fix
and maintain their air conditioner. Also tell the
clients that regular check of the installation
bracket and maintenance are necessary.
~
Fit the seal into the drain elbow,
then insert the drain elbow into
the base pan hole of outdoor unit,
rotate 90 to securely assemble
Base pan of
them. Connecting the drain elbow
Base pan hole
of outdoor unit
outdoor unit
with an extension drain hose
(Locally purchased), in case of the
Seal
water draining off the outdoor unit
during the heating mode.
Drain elbow
4. WIRING CONNECTION
CAUTION
1 . Do not touch the capacitor even if you have disconnected
Electrical box
the power for there is still high voltage power on it, or
electric shock hazard may occur. For you safety, you
should start repairing at least 5 minutes later after the
Screw
power is disconnected.
2 . The power is supplied from the Outdoor Unit. The two/three
Indoor Unit are connected with a signal wire with the
Outdoor Unit. Please make sure that the signal wires or
power cords are connected reliably and correctly, or the
air conditioner could not run normally.
1. Remove the electric parts cover from the outdoor
unit.
2. Connect the connection cables to the terminals as
40mm
identified with their respective matched numbers
on the terminal block of indoor and outdoor units.
3. To prevent the ingress of water, make a loop of the
connection cable as illustrated in the installation
diagram of indoor and outdoor units.
4. Insulate unused cords (conductors) with PVC-tape
Process them so they do not touch any electrical
or metal parts.
Grounding
CAUTION
Make sure to connect the indoor unit(A,B,C) to the Hi
Unit C
and Lo valve and terminals of signal wires(A,B,C) of
Connective cable
outdoor unit as identified with their respective
of indoor unit and
outdoor unit
matched connection. Wrong wiring connections may
Indoor unit B
Indoor unit C
cause some electrical parts to malfuntion.
Make evacuation for 15 minutes and more and
check that the compound meter indicates -76cmHg
5
(-1.0x10 Pa).
6.Turn the stem of the packed valve about 45
counterclockwise for 6~7 seconds after the gas
coming out, then tighten the flare nut again.
Make sure the pressure display in the pressure
indicator is a little higher than the atmosphere pressure.
7. Remove the Charge Hose from the Low Pressure
Charge Hose.
8. Tighten the cap of the Packed Valve.
Manifold vale
Compound meter
-76cmHg
Handle Lo
Charge hose
Manual Button
MDV03I-014aW 2200019942
o
Pressure gauge
Handle Hi
Charge hose
Vacuum pump
COOL
AUTO
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