Carrier Super-Slim 18-24 User manual

Installation Manual
Accessories .................................................................................02
Installation Summary..................................................................03
Unit Parts......................................................................................04
Indoor Unit Installation ...............................................................06
1. Select installation location..........................................................................................................06
2. Hang indoor unit.........................................................................................................................08
3. Drill wall hole for connective piping ............................................................................................10
4. Connect drain hose ....................................................................................................................11
Outdoor Unit Installation ............................................................13
1. Select installation location..........................................................................................................13
2. Install drain joint..........................................................................................................................14
3. Anchor outdoor unit....................................................................................................................14
Refrigerant Piping Connection...................................................16
A. Note on Pipe Length ..................................................................................................................16
B. Connection Instructions – Refrigerant Piping.............................................................................17
1. Cut pipe .................................................................................................................................17
2. Remove burrs ........................................................................................................................17
3. Flare pipe ends......................................................................................................................17
4. Connect pipes........................................................................................................................18
C. Installation Of The Throttle. (Some Models)..............................................................................19
Wiring ...........................................................................................20
1. Outdoor Uint Wiring....................................................................................................................21
2. Indoor Uint Wiring.......................................................................................................................22
Air Evacuation .............................................................................25
1. Evacuation Instructions .............................................................................................................25
2. Note on Adding Refrigerant........................................................................................................26
Panel Installation.........................................................................27
Test Run .......................................................................................32

Safety
Precautions
Accessories
The air conditioning system comes with the following accessories. Use all of the installation parts and accessories
to install the air conditioner. Improper installation may result in water leakage, electrical shock and re, or cause the
equipment to fail. The items are not included with the air conditioner must be purchased separately.
Name of
Accessories Q‘ty (pc) Shape Name of Accessories Q‘ty (pc) Shape
Manual 2 ~ 4 Installation paper template
(some models) 1
Soundproof/
insulation sheath
(some models) 1Anti-shock rubber
(some models) 1
Soundproof/
insulation sheath
(some models) 1Drain joint
(some models) 1
Outlet pipe sheath
(some models) 1Seal ring (some models) 1
Outlet pipe clasp
(some models) 1Copper nut 2
Ceiling hook
(some models) 4
Magnetic ring (wrap the
electric wires S1 & S2
(P & Q & E ) around the
magnetic ring twice)
(some models)
1
Suspension bolt
(some models) 4
Magnetic ring (Hitch it
on the connective cable
between indoor unit
and outdoor unit after
installation.)
(some models)
Varies by
model
Throttle (some units) 1
Optional accessories
• There are two types of remote controls: wired and wireless.
Select a remote controller based on customer preferences and requirements and install in an
appropriate place.
Refer to catalogues and technical literature for guidance on selecting a suitable remote controller.
Name Shape Quantity (PC)
Connecting pipe assembly
Liquid side
ø6.35 (1/4 in)
Parts you must purchase separately.
Consult the dealer about the proper
pipe size of the unit you purchased.
ø9.52 (3/8in)
ø12.7 (1/2in)
Gas side
ø9.52 (3/8in)
ø12.7 (1/2in)
ø16 (5/8in)
ø19 (3/4in)
ø22 (7/8in)
Page 02-GB
Accessories

Safety
Precautions
Installation Summary
Install the indoor unit
Evacuate the refrigeration
system
Install the front panel Perform a test run
Install the drainpipe
Connect the wires
Install the outdoor unit
Connect the refrigerant
pipes
Page 03-GB
Installation
Summary

Safety
Precautions
Unit Parts
NOTE: The installation must be performed in accordance with the requirement of local and national
standards. The installation may be slightly dierent in dierent areas.
Air outlet
Air inlet
Front grille
Display panel
Remote controller
Drain pipe
Connecting pipe
Air inlet
Air outlet
Page 04-GB
Unit Parts

Safety
Precautions
Air outlet
Air inlet
Front grille
Display panel
Remote controller
Drain pipe
Connecting pipe
Air inlet
Air outlet
NOTE ON ILLUSTRATIONS
Illustrations in this manual are for explanatory purposes. The actual shape of your indoor unit may be
slightly dierent. The actual shape shall prevail.
Page 05-GB
Unit Parts

Safety
Precautions
Installation Instructions – Indoor unit
NOTE: Panel installation should be performed after piping and wiring have been completed.
Step 1: Select installation location
Before installing the indoor unit, you must choose
an appropriate location. The following are standards
that will help you choose an appropriate location for
the unit.
Proper installation locations meet the following
standards:
Enough room exists for installation and
maintenance.
Enough room exists for the connecting the pipe
and drainpipe.
The ceiling is horizontal and its structure can
sustain the weight of the indoor unit.
The air inlet and outlet are not blocked.
The airow can ll the entire room.
There is no direct radiation from heaters.
DO NOT install unit in the following locations:
Areas with oil drilling or fracking
Coastal areas with high salt content in the air
Areas with caustic gases in the air, such as hot
springs
Areas that experience power uctuations, such
as factories
Enclosed spaces, such as cabinets
Kitchens that use natural gas
Areas with strong electromagnetic waves
Areas that store ammable materials or gas
Rooms with high humidity, such as bathrooms
or laundry rooms
Recommended distances between the indoor unit and the ceiling
The distance between the mounted indoor unit and the internal ceiling should meet the following
specications.
(A)
A
Ceiling board B (Ceiling hole)
>250cm / 98.4"
Ground
Front panel
Ceiling
Indoor Unit Installation
Page 06-GB
Indoor Unit
Installation

Safety
Precautions
Distance from ceiling relative to height of indoor unit
TYPE MODEL Length of A (mm/inch) Length of H (mm/inch) Length of B (mm/inch)
Super-Slim
models
18-24 205/8 > 235/9.3
880/34.5
24 245/9.6 > 275/10.8
30 205/8 > 235/9.3
30-48 245/9.6 > 275/10.8
48-60 287/11.3 > 317/12.5
Compact models 260/10.2 > 290/11.4 600/23.6
(B)
H
A
Indoor unit Ventilator Indoor unit
Ceiling
Illumination
>150cm / 59.1”
>200cm / 78.7”
>400cm / 157.5”
>230cm / 90.6”
Ground
Ceiling
Ceiling board Front panel
B (Ceiling hole)
>150cm / 59.1”
(200cm / 78.7”
recommended)
Distance from ceiling relative to height of indoor unit
MODEL Length of A (mm/inch) Length of H (mm/inch) Length of B (mm/inch)
18-24 204/8.03 230/9.1 900/35.4
24 287/11.3 313/12.3
Page 07-GB
Indoor Unit
Installation

Safety
Precautions
Step 2: Hang indoor unit
1. Use the included paper template to cut a rectangular hole in the ceiling, leaving at least 1m (39”) on all
sides. The cut hole size should be 4cm(1.6”) larger than the boby size.
Be sure to mark the areas where ceiling hook holes will be drilled.
(A)
Refrigerant piping side Drain hose side Refrigerant piping side Drain hose side
680mm / 26”
(Suspension bolt)
840mm / 33”
(Suspension bolt)
523mm / 20.6”
(Suspension bolt)
840mm / 33” (Body)
900mm / 35.4” (Body)
570mm / 22.4” (Body)
950mm / 37.4” (Ceiling opening)
1020mm / 40.2” (Ceiling opening)
647mm / 25.5” (Ceiling opening)
>100cm / 39” >100cm / 39”
>100cm / 39”
>100cm / 39”
545mm / 21.5” (Suspension bolt)
570mm / 22.4”(Body)
647mm / 25.5”(Ceiling opening)
Compact models ceiling hole size
Drain hose side
Refrigerant piping side
18-48K Super-Slim models ceiling hole size 60K Super-Slim models ceiling hole size
780mm / 30” (Suspension bolt)
840mm / 33”(Body)
950mm / 37.4”(Ceiling opening)
840mm / 33” (Suspension bolt)
900mm / 35.4” (Body)
1020mm / 40.2” (Ceiling opening)
Page 08-GB
Indoor Unit
Installation

Safety
Precautions
Refrigerant piping side Drain hose side
670mm / 26.4”
(Suspension bolt)
830mm / 32.7” (Body)
900mm / 35.4” (Ceiling opening)
950mm / 37.4”(Panel)
770mm / 30.3” (Suspension bolt)
830mm / 32.7”(Body)
900mm / 35.4”(Ceiling opening)
950mm / 37.4”(Panel)
CAUTION
The unit body should align perfectly with the hole.
Ensure that the unit and the hole are the same
size before moving on.
2. (A)
Drill 4 holes 5cm (2”) deep at the ceiling hook
positions in the internal ceiling. Be sure to hold the
drill at a 90° angle to the ceiling.
(B)
Drill 4 holes 12cm-15.5cm (4.7”-6.1”) deep at the
ceiling hook positions in the internal ceiling. Be sure
to hold the drill at a 90° angle to the ceiling.
3. Using a hammer, insert the ceiling hooks into the
pre-drilled holes. Secure the bolt using the included
washers and nuts.
4. Install the four suspension bolts.
5. Mount the indoor unit. You will need two people
to lift and secure it. Insert suspension bolts into
the unit’s hanging holes. Fasten them using the
included washers and nuts.
(A)
NOTE: The bottom of the unit should be 10-
18mm(0.4-0.7”)(Super-Slim models) or 24mm
(0.9”)(Compact models) higher than the ceiling
board. Generally, L (indicated in the following
gure) should be half the length of the suspension
bolt or long enough to prevent the nuts from
coming off.
Wall
Main body
10 - 18mm (0.4-0.7”)
or 24mm (0.9”)
Ceiling board
Page 09-GB
Indoor Unit
Installation
(B)

Safety
Precautions
(B)
NOTE: The bottom of the unit should be 10-
25mm(0.4-0.98”)higher than the ceiling board.
Generally, L (indicated in the following gure)
should be half the length of the suspension bolt
or long enough to prevent the nuts from coming
off.
L
52~51
631
CAUTION
Ensure that the unit is completely level. Improper
installation can cause the drain pipe to back up
into the unit or water leakage.
NOTE: Ensure that the indoor unit is level.
The unit is equipped with a built-in drain pump
and oat switch. If the unit is tilted against the
direction of condensate ows (the drainpipe side
is raised), the oat switch may malfunction and
cause water to leak. (for some models)
Water level
NOTE FOR NEW HOME INSTALLATION
When installing the unit in a new home, the
ceiling hooks can be embedded in advance.
Make sure that the hooks do not come loose
due to concrete shrinkage. After installing the
indoor unit, fasten the installation paper template
onto the unit with bolts to determine in advance
the dimension and position of the opening on
the ceiling. Follow the instructions above for the
remainder of the installation.
Paper pattern for
installation
(on some models)
Center of the
ceiling openiing
bolts
Step 3: Drill wall hole for connective piping
1. Determine the location of the wall hole based on
the location of the outdoor unit.
2. Using a 65mm (2.56”) or 90mm(3.54”)
(depending on models )core drill, drill a hole in
the wall. Make sure that the hole is drilled at
a slight downward angle, so that the outdoor
end of the hole is lower than the indoor end by
about 12mm (0.5”). This will ensure proper water
drainage.
3. Place the protective wall cu in the hole. This
protects the edges of the hole and will help seal
it when you nish the installation process.
Page 10-GB
Indoor Unit
Installation

Safety
Precautions
CAUTION
When drilling the wall hole, make sure to avoid
wires, plumbing, and other sensitive
Wall
Outdoor Indoor
≈ 12mm / 0.5”
Step 4: Connect drain hose
The drainpipe is used to drain water away from
the unit. Improper installation may cause unit and
property damage.
CAUTION
●Insulate all piping to prevent condensation,
which could lead to water damage.
●If the drainpipe is bent or installed incorrectly,
water may leak and cause a water-level
switch malfunction.
●In HEAT mode, the outdoor unit will discharge
water. Ensure that the drain hose is placed in
an appropriate area to avoid water damage
and slippage.
●DO NOT pull the drainpipe forcefully. This
could disconnect it.
NOTE ON PURCHASING PIPES
Installation requires a polyethylene tube (exterior
diameter = 2.5cm or 3.7-3.9cm) (depending
on models ), which can be obtained at your
localhardware store or dealer.
Indoor Drainpipe Installation
Install the drainpipe as illustrated in the following
Figure.
(A)
Drain hose
Drainpipe
connecting
port
Metal clamp Insulation
1-1.5m
(39-59”)
Downward slope
1/100
(B)
1-1.5m
(39-59”)
Downward slope
1/100
1-1.5m
(39-59”)
Page 11-GB
Indoor Unit
Installation

Safety
Precautions
NOTE ON DRAINPIPE INSTALLATION
●When using an extended drainpipe, tighten
the indoor connection with an additional
protection tube to prevent it from pulling
loose.
●The drainpipe should slope downward at a
gradient of at least 1/100 to prevent water
from owing back into the air conditioner.
●To prevent the pipe from sagging, space
hanging wires every 1-1.5m (39-59”).
●If the outlet of the drainpipe is higher than
the body’s pump joint, provide a lift pipe for
the exhaust outlet of the indoor unit. The lift
pipe must be installed no higher than 75cm
(29.5”) or100cm (39.4”) from the ceiling
board and the distance between the unit
and the lift pipe must be less than 30cm
(11.8”) (depending on models ). Incorrect
installation could cause water to ow back
into the unit and ood.
●To prevent air bubbles, keep the drain hose
level or slightly tiled up (<75mm / 3”) (some
models ).
(A)
Ceiling
≤ 30cm (11.8”) 1 - 1.5m
(39-59”)
≤ 53cm
(20.8”)
22cm
(8.6”)
≤ 75cm
(29.5”)
0 - 75mm
(3”)
(B)
1 - 1.5m
(39-59”)
≤100cm
(39.4”)
NOTE: When connecting multiple drainpipes,
install the pipes as illustrated in the following
Figure.
0-53cm
(20.8”)
≥10cm
(4”)
(B)
≤100cm
(39.4”)
Vent
(A)
Pass the drain hose through the wall hole. Make
sure the water drains to a safe location where it will
not cause water damage or a slipping hazard.
NOTE: The drainpipe outlet should be at least
5cm (1.9”) above the ground. If it touches the
ground, the unit may become blocked and
malfunction. If you discharge the water directly
into a sewer, make sure that the drain has a U or
S pipe to catch odors that might otherwise come
back into the house.
Page 12-GB
Indoor Unit
Installation

Safety
Precautions
Install the unit by following local codes and
regulations, there may be differ slightly between
different regions.
60cm (24in) above
30cm (12in)
on left
30cm (12in)
from back wall
200cm (79in)
in front
60cm (24in)
on right
Installation Instructions – Outdoor unit
Step 1: Select installation location
Before installing the outdoor unit, you must
choose an appropriate location. The following are
standards that will help you choose an appropriate
location for the unit.
Proper installation locations meet the following
standards:
Meets all spatial requirements shown in
Installation Space Requirements above.
Good air circulation and ventilation
Firm and solid—the location can support the
unit and will not vibrate
Noise from the unit will not disturb others
Protected from prolonged periods of direct
sunlight or rain
Where snowfall is anticipated, raise the unit
above the base pad to prevent ice buildup and
coil damage. Mount the unit high enough to be
above the average accumulated area snowfall.
The minimum height must be 18 inches
DO NOT install unit in the following locations:
Near an obstacle that will block air inlets and
outlets
Near a public street, crowded areas, or where
noise from the unit will disturb others
Near animals or plants that will be harmed by
hot air discharge
Near any source of combustible gas
In a location that is exposed to large amounts
of dust
In a location exposed to a excessive amounts
of salty air
SPECIAL CONSIDERATIONS FOR
EXTREME WEATHER
If the unit is exposed to heavy wind:
Install unit so that air outlet fan is at a 90° angle
to the direction of the wind. If needed, build
a barrier in front of the unit to protect it from
extremely heavy winds.
See Figures below.
Strong wind
Strong
wind
Wind Bafe
Strong wind
If the unit is frequently exposed to heavy rain
or snow:
Build a shelter above the unit to protect it from
the rain or snow. Be careful not to obstruct air
ow around the unit.
If the unit is frequently exposed to salty air
(seaside):
Use outdoor unit that is specially designed to
resist corrosion.
Outdoor Unit Installation
Page 13-GB
Outdoor Unit
Installation

Safety
Precautions
Step 2: Install drain joint (Heat pump unit only)
Before bolting the outdoor unit in place, you must
install the drain joint at the bottom of the unit. Note
that there are two different types of drain joints
depending on the type of outdoor unit.
If the drain joint comes with a rubber seal (see
Fig. A), do the following:
1. Fit the rubber seal on the end of the drain joint
that will connect to the outdoor unit.
2. Insert the drain joint into the hole in the base pan
of the unit.
3. Rotate the drain joint 90° until it clicks in place
facing the front of the unit.
4. Connect a drain hose extension (not included)
to the drain joint to redirect water from the unit
during heating mode.
If the drain joint doesn’t come with a rubber
seal (see Fig. B), do the following:
1. Insert the drain joint into the hole in the base pan
of the unit. The drain joint will click in place.
2. Connect a drain hose extension (not included)
to the drain joint to redirect water from the unit
during heating mode.
Base pan hole of
outdoor unit
Seal Seal
Drain joint
(A) (B)
IN COLD CLIMATES
In cold climates, make sure that the drain hose
is as vertical as possible to ensure swift water
drainage. If water drains too slowly, it can freeze
in the hose and ood the unit.
Step 3: Anchor outdoor unit
The outdoor unit can be anchored to the ground or
to a wall-mounted bracket with bolt(M10). Prepare
the installation base of the unit according to the
dimensions below.
UNIT MOUNTING DIMENSIONS
The following is a list of dierent outdoor unit sizes
and the distance between their mounting feet.
Prepare the installation base of the unit according
to the dimensions below.
Outdoor Unit Types and Specications
Split Type Outdoor Unit
Page 14-GB
Outdoor Unit
Installation

Safety
Precautions
(unit: mm/inch)
Outdoor Unit Dimensions
W × H × D
Mounting Dimensions
Distance A Distance
760x590x285 (29.9x23.2x11.2) 530 (20.85) 290 (11.4)
810x558x310 (31.9x22x12.2) 549 (21.6) 325 (12.8)
845x700x320 (33.27x27.5x12.6) 560 (22) 335 (13.2)
900x860x315 (35.4x33.85x12.4) 590 (23.2) 333 (13.1)
945x810x395 (37.2x31.9x15.55) 640 (25.2) 405 (15.95)
990x965x345 (38.98x38x13.58) 624 (24.58) 366 (14.4)
938x1369x392 (36.93x53.9x15.43) 634 (24.96) 404 (15.9)
900x1170x350 (35.4x46x13.8) 590 (23.2) 378 (14.88)
800x554x333 (31.5x21.8x13.1) 514 (20.24) 340 (13.39)
845x702x363 (33.27x27.6x14.3) 540 (21.26) 350 (13.8)
946x810x420 (37.24x31.9x16.53) 673 (26.5) 403 (15.87)
946x810x410 (37.24x31.9x16.14) 673 (26.5) 403 (15.87)
952x1333x410 (37.5x52.5x16.14) 634 (24.96) 404 (15.9)
952x1333x415 (37.5x52.5x16.34) 634 (24.96) 404 (15.9)
890x673x342 (35x26.5x13.46) 663 (26.1) 354 (13.94)
Rows of series installation
The relations between H, A and L are as
follows. L A
L ≤ H L ≤ 1/2H 25 cm / 9.8” or more
1/2H < L ≤ H 30 cm / 11.8” or more
L > H Can not be installed
L
H
A
300 cm / 118” or more
60 cm / 23.6”
or more
150 cm / 59”
or more
25 cm / 9.8”
or more 25 cm / 9.8”
or more
Page 15-GB
Outdoor Unit
Installation

Safety
Precautions
Refrigerant Piping Connection
When connecting refrigerant piping, do not let substances or gases other than the specied refrigerant
enter the unit. The presence of other gases or substances will lower the unit’s capacity, and can cause
abnormally high pressure in the refrigeration cycle. This can cause explosion and injury.
Note on Pipe Length
Ensure that the length of the refrigerant pipe, the number of bends, and the drop height between the
indoor and outdoor units meets the requirements shown in the following table:
The Maximum Length And Drop Height Based on Models. (Unit: m/ft.)
Type of model Capacity (Btu/h) Length of piping Maximum drop height
North America, Australia and
the eu frequency conversion
Split Type
<15K 25/82 10/32.8
≥15K - <24K 30/98.4 20/65.6
≥24K - <36K 50/164 25/82
≥36K - ≤60K 65/213 30/98.4
Other Split Type
12K 15/49 8/26
18K-24K 25/82 15/49
30K-36K 30/98.4 20/65.6
42K-60K 50/164 30/98.4
CAUTION
Oil traps
If oil ows back into the outdoor unit’s compressor,
this might cause liquid compression or
deterioration of oil return.
Oil traps in the rising gas piping can prevent this.
An oil trap should be installed every 6m(20ft) of
vertical suction line riser
(<36000Btu/h unit).
An oil trap should be installed every 10m(32.8ft) of
vertical suction line riser
(≥36000Btu/h unit).
Indoor unit/
Outdoor unit
6m/20ft
(<36000Btu/h unit)
10m/32.8ft
(≥36000Btu/h unit)
Gas piping
Oil trap
Liquid piping
Indoor unit/
Outdoor unit
6m/20ft
(<36000Btu/h unit)
10m/32.8ft
(≥36000Btu/h unit)
Page 16-GB
Refrigerant
Piping
Connection

Safety
Precautions
Connection Instructions –
Refrigerant Piping
CAUTION
●The branching pipe must be installed
horizontally. An angle of more than 10° may
cause malfunction.
●DO NOT install the connecting pipe until both
indoor and outdoor units have been installed.
●Insulate both the gas and liquid piping to
prevent water leakage.
Step 1: Cut pipes
When preparing refrigerant pipes, take extra care
to cut and are them properly. This will ensure
efcient operation and minimize the need for future
maintenance.
1. Measure the distance between the indoor and
outdoor units.
2. Using a pipe cutter, cut the pipe a little longer
than the measured distance.
3. Make sure that the pipe is cut at a perfect 90°
angle.
90°
Oblique Rough Warped
DO NOT DEFORM PIPE WHILE
CUTTING
Be extra careful not to damage, dent, or deform
the pipe while cutting. This will drastically reduce
the heating efciency of the unit.
Step 2: Remove burrs.
Burrs can affect the air-tight seal of refrigerant
piping connection. They must be completely
removed.
1. Hold the pipe at a downward angle to prevent
burrs from falling into the pipe.
2. Using a reamer or deburring tool, remove all
burrs from the cut section of the pipe.
Pipe
Reamer
Point down
Step 3: Flare pipe ends
Proper aring is essential to achieve an airtight
seal.
1. After removing burrs from cut pipe, seal the ends
with PVC tape to prevent foreign materials from
entering the pipe.
2. Sheath the pipe with insulating material.
3. Place are nuts on both ends of pipe. Make sure
they are facing in the right direction, because
you can’t put them on or change their direction
after aring.
Flare nut
Copper pipe
4. Remove PVC tape from ends of pipe when
ready to perform aring work.
5. Clamp are form on the end of the pipe. The end
of the pipe must extend beyond the are form.
Pipe
Flare form
Page 17-GB
Refrigerant
Piping
Connection

Safety
Precautions
6. Place aring tool onto the form.
7. Turn the handle of the aring tool clockwise
until the pipe is fully ared. Flare the pipe in
accordance with the dimensions.
PIPING EXTENSION BEYOND FLARE FORM
Pipe
gauge Tightening Torque
Flare dimension (A)
(Unit: mm/Inch) Flare shape
Min. Max.
Ø 6.35 18-20 N.m
(183-204 kgf.cm) 8.4/0.33 8.7/0.34
R0.4~0.8
Ø 9.52 25-26 N.m
(255-265 kgf.cm) 13.2/0.52 13.5/0.53
Ø 12.7 35-36 N.m
(357-367 kgf.cm) 16.2/0.64 16.5/0.65
Ø 16 45-47 N.m
(459-480 kgf.cm) 19.2/0.76 19.7/0.78
Ø 19 65-67 N.m
(663-683 kgf.cm) 23.2/0.91 23.7/0.93
Ø 22 75-85N.m
(765-867 kgf.cm) 26.4/1.04 26.9/1.06
8. Remove the aring tool and are form, then
inspect the end of the pipe for cracks and even
aring.
Step 4: Connect pipes
Connect the copper pipes to the indoor unit rst,
then connect it to the outdoor unit. You should
rst connect the low-pressure pipe, then the high-
pressure pipe.
1. When connecting the are nuts, apply a thin coat
of refrigeration oil to the ared ends of the pipes.
2. Align the center of the two pipes that you will
connect.
Indoor unit tubing Flare nut Pipe
3. Tighten the are nut as tightly as possible by
hand.
4. Using a spanner, grip the nut on the unit tubing.
5. While rmly gripping the nut, use a torque
wrench to tighten the are nut according to the
torque values in above table.
NOTE: Use both a spanner and a torque wrench
when connecting or disconnecting pipes to/from
the unit.
CAUTION
• Ensure to wrap insulation around the piping.
Direct contact with the bare piping may result in
burns or frostbite.
• Make sure the pipe is properly connected. Over
tightening may damage the bell mouth and
under tightening may lead to leakage.
NOTE ON MINIMUM BEND RADIUS
Carefully bend the tubing in the middle according
to the diagram below. DO NOT bend the tubing
more than 90° or more than 3 times.
Bend the pipe with thumb
min-radius 10cm (3.9”)
6. After connecting the copper pipes to the indoor
unit, wrap the power cable, signal cable and the
piping together with binding tape.
NOTE: DO NOT intertwine signal cable with other
wires. While bundling these items together, do not
intertwine or cross the signal cable with any other
wiring.
Page 18-GB
Refrigerant
Piping
Connection

Safety
Precautions
7. Thread this pipeline through the wall and
connect it to the outdoor unit.
8. Insulate all the piping, including the valves of the
outdoor unit.
9. Open the stop valves of the outdoor unit to start
the ow of the refrigerant between the indoor
and outdoor unit.
CAUTION
Check to make sure there is no refrigerant leak
after completing the installation work. If there is a
refrigerant leak, ventilate the area immediately and
evacuate the system (refer to the Air Evacuation
section of this manual).
Installation Of The Throttle. (Some Models)
1
2
3
1 Throttle
2 Liquid pipe
3 Gas pipe
≥500mm
Precautions
● For ensuring throttled efciency, please mount
the throttle as horizontally as possible.
Indoor
Indoor
Indoor
Outdoor
Outdoor
Outdoor
●Wrap the supplied anti-shock rubber at
external of the throttle for denoise.
1 Anti-shock rubber
2 Throttle
Page 19-GB
Refrigerant
Piping
Connection