Install the outdoor unit on a rigid base to prevent increasing noise level and vibration.
Place outdoor unit on feet when mounted on the ground so there is sufficient drainage clearance.
Determine the air outlet direction where the discharged air will not be blocked. If the installation
location is exposed to strong wind such as a seaside, make sure the fan operates properly by
putting the unit lengthwise along the wall or using a dust or shield plate.
In particularly windy area, install the unit in such a way that will prevent the admission of wind.
If wall mounted installation, the installation bracket should accord with technique requirement
in the installation bracket diagram. The installation wall should be solid brick, concrete or the
same intensity construction. If not, appropriate actions to reinforce should be taken.
The connection between bracket and wall, bracket and the air conditioner should be firm,
stable and reliable.
Be sure there is no obstacle which will block radiating air.
STRONG
WIND
STRONG
WIND
Barrier
Incorrect
Correct
Seal
Drain joint
Base pan hole
of outdoor unit
(A)
(B)
The drain joint could differ slightly, depending on
different outdoor unit models.
For the drain joint with the seal (Fig. A), first fit the seal onto
the drain joint, then insert the drain joint into the base pan
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hole of outdoor unit, rotate 90 to securely assemble them.
To install drain joint as shown in Fig. B, insert the drain
joint into the base pan hole of outdoor unit until it remains
fixed with a clicking sound. For water draining off the outdoor
unit during the heating mode, connect the drain joint to an
extension drain hose (locally purchased) if required.
2
DRAIN JOINT INSTALLATION
OUTDOOR INSALLATION PRECAUTION
3
REFRIGERANT PIPE CONNECTION
1. Cut copper tube with a pipe cutter.
2. Put flare nuts on pipe/tube after having
completed burr removal, then flare the pipe.
3. Firmly hold the copper tube in the die with the
dimension shown in the table below.
.
.
Align pipes to be connected.
Sufficiently tighten the flare nut with fingers,
then tighten it with a spanner and a Torque
Wrench to the correct torque setting as shown.
Excessive torque can break nut depending
on installation conditions.
Outer Diam.
(mm)
A (mm)
Max.
Min.
6.35 1.3
0.7
9.52
1.6 1.0
12.7
1.8 1.0
12.7
16
1.8
2.2
1.0
2.0
Bar
Copper Tube
Clamp Handle
Handle
Bar
"A"
Indoor Unit Tubing Flare Nut Pipings
.
Outer
Diameter
Tightening
Torque(N.cm)
Additional Tightening
Torque(N.cm)
¦6.35mm
¦12.7mm
¦16mm
¦9.52mm
1500
(153kgf.cm)
1600
(163kgf.cm)
3500
(357kgf.cm)
4500
(459kgf.cm)
3600
(367kgf.cm)
4700
(479kgf.cm)
2500
(255kgf.cm)
2600
(265kgf.cm)
AIR PURGING AND TEST OPERATION
4
5
1. Remove the electrical terminal cover from the outdoor unit by loosening the screw.
2. Connect the connective cables to the terminals identified with their respective matched numbers
on the terminal block of indoor and outdoor units.
3. Secure the cables onto the terminal with the cord clamp.
4. To prevent the ingress of water, form a loop of the connective cables as illustrated in the installation
diagram of indoor and outdoor units.
5. Insulate unused cords (conductors) with PVC-tape. Process them so they do not touch any
electrical or metal parts.
Cover
Screw
Terminal Block of Outdoor Unit
Liquid side: ¦6.35 mm
R410A: (Pipe length-5)x20g/m
20g per meter over 5 meters
(for 9K, 12K & 18K models)
Liquid side: ¦9.52 mm
R410A: (Pipe length-5)x40g/m
40g per meter over 5 meters
(for 21K model)
Connective Pipe Length
Less than 5 meters
More than 5 meters
Air Purging Method
Use Vacuum Pump
Additional Amount of Refrigerant to be Charged
Open the valve stem until it hits against
the stopper. Do not try to open it further.
Tighten the valve stem cap securely with
a spanner or crescent.
Valve stem cap tightening torque - see
Tightening Torque table.
.
.
.
.
Flare Nut
Stopper
Cap
Valve Body
Valve Stem
Use Vacuum Pump
For all R410A refrigerant models, make sure the refrigerant added into air conditioner is in
liquid form. (This is done by turn the charging refrigerant cylinder upside down to charge.)
Additional refrigerant is only added after the unit has been vacuumed and leak tested.
.
.
.
.
The indoor unit and tubing between the indoor and outdoor units must be evacuated with a
vacuum pump to remove non-condensables and moisture from the system and leak tested.
Check that each tube (both liquid side and gas side) between the indoor and outdoor units
have been properly connected, flare nuts tighten to the correct torque settings.
Pipe length and additional amount of refrigerant to be charged are as follows:
Outdoor
Unit
Indoor
Unit
Refrigerant
Packed Valve
Flare Nut
Gas side
Liquid side
A
C
D
B
1. Completely tighten the flare nuts, A, B, C, D.
2. Connect the manifold valve charge hose (blue) to the
service port of the packed valve on the gas pipe side.
3. Connect the charge hose (yellow) connection to the
vacuum pump. (See illustration on the right.)
4. Fully open the handle Lo-side of the manifold valve.
5. Operate the vacuum pump to evacuate. After starting
evacuation, you can slightly loosen the flare nut of the
packed valve on the gas pipe side to check that air is
entering. (Vacuum pump operating noise will change
and a compound meter indicates zero instead of minus)
6. After the evacuation is complete, fully close the handle
Lo-side of the manifold valve and stop the operation of
the vacuum pump. But first:
Make evacuation for at least 15 minutes and check
5
that the compound meter indicates -76cmHg (-1.0x10 Pa).
If a digital vacuum gauge is used, it should read <200 microns.
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7. Turn the stem of the packed valve B about 45 counter-
clockwise for 6~7 seconds to release refrigerant from the
outdoor into the system, then tighten the packed valve again.
Make sure the pressure display in the pressure indicator is a
little higher than atmospheric pressure.
8. Remove the charge hose from the service port.
9. Fully open the packed valve stems B and A.
10. Securely tighten the cap of the packed valves (and service port).
11. Add additional refrigerant in cooling mode ONLY.
Manifold Valve
Compound Meter
-76cmHg
Handle Lo-Side
Handle Hi-Side
Charge Hose
Charge Hose
Vacuum Pump
Pressure Gauge
Packed Valves
(and Service Port)
Perform test operation after completing refrigerant leak check at the flare nut connections, packed
valves and service port and also after electrical safety checks have been done.
Check that all tubing and wiring has been properly connected.
Check that the gas and liquid side service valves are fully open.
1. Once power is connected, press the ON/OFF button on the remote control to turn the unit on.
2. Use the MODE button to select COOL, then HEAT, then AUTO and then FAN, testing each mode
for several minutes to check that all the functions work well.
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3. When the room temperature is too low (lower than 17 C), the unit cannot be controlled by the
remote control to run in cooling mode, you need to use the manual operation. Manual operation
is only used when the remote control is disabled or tests and maintenance are necessary.
OneThe manual control button is on the bottom of the unit as shown in the illustration below.
press on the manual control button will lead to the forced AUTO operation.
If pressed twice within five seconds, the unit will operate under forced COOL operation.
4. The test operation should take about 30 minutes.
Flaring
Tightening Connection
1. Vacuuming
2. Using the Vacuum Pump
4. Test Running
3. Safety and Leakage Check
A: Lo packed valve B: Hi packed valve
C and D are ends of indoor unit connection.
CAUTION
1. Soapy water method:
Apply a soapy water or a liquid neutral detergent on the indoor and
outdoor unit flare nuts by a soft brush to check for leakage of the
connecting points (flare nuts) and packed valves and service port.
If bubbles come out, it indicates that there is a leak.
2. Leak detector:
Use an electronic leak detector to check for leakage.
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CONNECT THE CABLE TO THE OUTDOOR UNIT
CAUTION
1
Check Points:
Indoor Unit
Flare Nuts
D
B
C
A
Check Points:
Outdoor Unit
Flare Nuts,
Valves and
Service Port
Cover
NOTE:
To Indoor Unit To Indoor Unit
Power Supply Power Supply
Oblique
Roughness
Burr
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90
1 1
2(N) 2(N)
S S
L LN N
L(1) L(1)
Always connect the indoor unit first,
then the outdoor unit.
Do not allow the piping to come out from
the back of the indoor unit.
Be careful not to let the drain hose become
slack.
Heat insulation should be strapped to the
extension drain hose of indoor unit.
Be sure that the drain hose is located at
the lowest side of the bundle. Locating at
the upper side can cause the drain pan to
overflow inside the indoor unit.
Never inter-cross nor inter-twist the power
wire with any other wiring.
1. Pass the piping through the hole in the wall.
2. Hook the indoor unit onto the upper portion
of Installation Plate (engage the indoor unit
with the upper edge of the Installation Plate).
Ensure the hooks are properly seated on the
installation plate by moving it in left to right.
3. Piping can be easily accomplished by lifting
the indoor unit with a supporting cushioning
material between the indoor unit and the wall.
Then remove it after piping is finished.
4. Press the lower left and right sides of the
unit against the installation plate until hooks
engage with their slots.
CAUTION
Indoor Unit Installation
1. For the left-hand and right-hand piping,
remove the pipe cover from the side panel.
2. For the right-back and left-back piping,
install the piping as shown.
NOTE: For 9K & 12K models, there is only
one-side drainage structure design. For 18k
& 21K models, one-side drainage structure is
standard. Both sides drainage structure is
optional and can only be customized from
factory. For both sides drainage structure, it
can be chosen for right, left or both sides
drainage connection. If choosing both sides
drainage connection, another drain hose is
needed as there is only one drain hose included
from factory. If choosing one side drainage
connection, make sure the drain hole on the
other side is well plugged. The connection
of the drain hose should be done by a
qualified installer to prevent water leakage.
3. Bundle the tubing, connecting cables, and
drain hose securely and evenly with tape
as shown in illustration on the right.
Connective Pipe Installation
Because the condensed water from the rear
of the indoor unit gathers in ponding box
and is piped out of the room. Do not put
anything else in the box.
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Model A
Model B
Manual Control Button
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