Install the outdoor unit on a firm rigid base to prevent excess noise and vibration.
Set the direction of the unit to ensure optimal condenser air circulation.
If there is risk of exposure to strong prevailing winds such as in coastal applications, ensure
that the unit is placed at 90 degrees to the wind direction, or provide protection from the wind
by the use of shields.
In particularly windy applications, install the unit to prevent adverse interaction with the unit.
If mounting on a wall or structure, the installation bracket should be adequately sized to support
the unit fully. The installation wall should be solid brick, concrete or similar construction, or
action must be taken to reinforce and/or support the unit.
The connection between bracket, wall and unit should be firm, stable and reliable.
Make sure that no obstacles restrict the condenser air flow or block any heat radiation.
Strong
wind
Strong
wind
Barrier
Incorrect
Correct
Seal
Drain joint
Base pan hole
of outdoor unit
(A)
(B)
The condensate drain joints differ slightly according to the
different size outdoor units in the range.
For the condensate drain joint with a seal (Fig.A), first fit the seal
onto the drain joint, then insert the drain joint into the base pan
hole of outdoor unit. Rotate joint 90 degrees to secure.
To install drain joint as shown in Fig.B, insert the condensate
drain joint into the base pan hole of outdoor unit until it clicks
in place. Connect the condensate drain joint with a drain hose
(provided by installer) to facilitate drainage of water produced
by the outdoor unit during heating mode.
CONDENSATE DRAIN INSTALLATION
OUTDOOR UNIT INSTALLATION PRECAUTIONS
REFRIGERANT PIPE CONNECTION
1. Cut the pipe with a suitable pipe cutter.
2. Place flare nuts on pipe after completing
burr removal, then flare the pipe.
3. Firmly hold the copper pipe in a suitably
sized die as shown in the table below.
..
Align the pipes to be connected.
Finger tighten the flare nut, then tighten
properly with a spanner and torque
wrench as shown.
Excessive torque can break the nut.
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
15.9
1.8
2.2
1.0
2.0
Bar
Copper pipe
Clamp handle
Handle
Bar
Indoor unit pipe
Flare nut
Interconnecting
pipe
.
Outer
diam.
Tightening
torque(N.cm)
Additional tightening
torque(N.cm)
Ø6.35mm
Ø12.7mm
Ø15.9mm
Ø9.52mm
1500
(153kgf.cm)
1600
(163kgf.cm)
3500
(357kgf.cm)
4500
(459kgf.cm)
3600
(367kgf.cm)
4700
(479kgf.cm)
2500
(255kgf.cm)
2600
(265kgf.cm)
CHARGING, AIR PURGE AND TEST OPERATION
1. Remove the electrical control board cover from the outdoor unit by loosening the screw.
2. Connect the interconnecting cables to the terminals as identified with their respectively matched
numbers and colours on the terminal blocks of indoor and outdoor units.
3. Secure the cable onto the control board with the cord clamp.
4. To prevent the ingress of water, loop the interconnecting cable so that water cannot track along the
cable and enter the indoor and outdoor units.
5. Isolate any unused cables or wires correctly. Ensure that they cannot come into contact with any
other electrical components or metal parts.
Cover
Screw
Terminal block of outdoor unit
Liquid side: 6.35mm
Ø
R410A: (Pipe length-5)x20g/m
Liquid side: 9.52mm:
Ø
R410A: (Pipe length-5)x40g/m
Refrigerant pipe length
Less than 5m
More than 5m
Air purging method
Vacuum pump
Additional amount of refrigerant required
Open the valve stem until it hits the valve
stopper. Do not try to open further.
Securely tighten the valve stem cap with
a spanner to help prevent leaks.
Valve stem cap tightening torque. See
Tightening torque table.
.
.
.
.
Flare nut
Stopper
Cap
Valve body
Valve stem
Vacuum pump
Make sure that any refrigerant added to the refrigeration system is added in liquid form to
ensure correct charging levels.
When relocating the unit to another place, use a vacuum pump to perform proper evacuation.
.
.
.
.
The indoor unit and interconnecting pipe between the indoor and outdoor units must be leak tested
and evacuated to remove any non-condensables, contaminants or moisture from the system.
Check that each pipe (both liquid and gas side) between the indoor and outdoor units has
been properly connected and all wiring is complete and checked before testing.
Pipe length and refrigerant amounts:
Outdoor
unit
Indoor
unit
Refrigerant
Packed valve
Flare nut
Gas
Liquid
A
C
D
B
1. Completely tighten the flare nuts, A, B, C and D, and
attach the manifold valve charge hose to a charge port
of the valve on the gas pipe side.
2. Then connect the charge hose to the vacuum pump.
3. Fully open the Low tap of the manifold valve.
4. Switch on the vacuum pump to evacuate the system.
After starting the pump, slightly loosen the flare nut of
the gas side valve, and check that air is entering.
(Operation noise of the vacuum pump changes and
the compound gauge indicates 0 instead of minus).
Re-tighten the flare nut and evacuate the system.
5. After the evacuation is complete, fully close the Low
tap of the manifold valve and switch off the vacuum
pump.
Evacuate for 15 minutes or more and check that
the compound gauge indicates -76cmHg (-1.0x10 Pa).
5
6. Turn the stem of the liquid line valve B about 45 counter-
O
clockwise for 6~7 seconds. After allowing gas to escape,
tighten the stem of the liquid line. Make sure that the
pressure displayed on the pressure gauge is slightly
higher than atmospheric pressure.
7. Remove the charge hose from the Low pressure charge hose.
8. Fully open the Liquid and Gas valve stems B and A.
9. Securely tighten the cap of the valves.
Manifold valve
Compound meter
-76cmHg
Low tap
Hi tap
Charge hose
Charge hose
Vacuum pump
Pressure gauge
Gas side valve
Perform test operation after completing gas leak check at the flare nut connections and after an
electrical safety check.
Check that all piping and wiring have been properly connected.
Check that the gas and liquid side service valves are fully open.
1. Switch on the power, and press the ON/OFF button on the remote control to turn the unit on.
2. Use the MODE button to select COOL, HEAT, AUTO and FAN to check if all of the unit functions
are operating correctly.
3. When the ambient temperature is lower than 17 C, the unit cannot be controlled by the
O
remote control to run in cooling mode, but manual operation can be employed. Manual operation
should only be used when the remote control is disabled or maintenance is necessary.
Hold the indoor unit front panel sides and lift up at an angle until the panels clicks and remains open.
Press the Manual control button to select the AUTO or COOL, the unit will now operate under Forced
AUTO or COOL mode (see User Manual for details).
4. The test operation should last for at least 30 minutes.
1. Air purging
2. Using the Vacuum Pump
4. Test running
3. Safety and leakage check
A: Liquid line valve B: Gas line valve
C and D are the ends of indoor unit connecting pipes.
CAUTION
1. Soapy water method:
Apply a soapy water solution, directly to the indoor
and outdoor unit connections with a soft brush to check
for leaks at the connection points of the refrigerant pipe.
If bubbles are observed, a leak is present.
2. Leak detector
Use the leak detector to check for potential leaks.
O
U
T
D
O
O
R
U
N
I
T
ELECTRICAL CONNECTION - OUTDOOR UNIT
CAUTION
Indoor unit
check point
D
B
C
A
Outdoor unit
check point
Cover
NOTE:
Angled
Rough
Burred
90
O
Manual control button
Connect the indoor unit first, then the
outdoor unit.
Do not allow the piping to be dislodged from the
back of the indoor unit.
Ensure that the condensate drain has a constant
fall to the outlet.
Insulate any condensate drain extensions.
Be sure that the drain hose is located at
the lowest part of the piping bundle. Locating it
on the upper side can cause drain tray to
overflow inside the unit.
Ensure that power wiring is routed separately
to 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 left and right to check.
3. Positioning adjustment can be easily made by
propping the indoor unit with a cushioning material
between the indoor unit and the wall. Make sure
this is removed at completion.
4. Press the lower left and right hand sides of the
unit firmly against the installation plate until the
hooks engage with the relevant mounting slots.
CAUTION
Indoor unit installation
1. For left-hand or right-hand piping,
remove the pipe cover from the side panel.
2. For right rear and left rear pipe exits,
install the piping as shown.
NOTE:
When choosing the condensate
drain connection side, please enure that the
condensate drain connection on the other
side (if applicable) is plugged. The condensate
drain shall be installed by a qualified installer.
Right rear pipe exit
3. Bundle the pipes, connecting cables, and
condensate drain securely with tape, as
shown in Figure on the right.
Left rear pipe exit
Interconnecting pipe installation
Because the condensate water from
the indoor unit is collected in a tray
before flowing out, ensure that no foreign
objects are placed in the tray that may
cause a blockage.
I
N
D
O
O
R
U
N
I
T
To indoor unit
To indoor unit
Cord clamp
L
S
N
L
S
N
or
Condensate tray
Pipe cavity
Refrigerant pipes
Wrapping
Condensate pipe
Interconnecting
Cables
