intensity IDUFCI60KC-3 User manual

MAN-I-FCI5TR-0318
intensity.mx
INSTALLATION MANUAL
Fan & Coil
IDUFCI60KC-3, IDUCOI60KC-3.

IMPORTANT NOTE: Read this manual carefully before installing or operating your new air
conditioning unit. Make sure to save this manual for future reference.
Accessories....................................................04
a. Indoor Unit Parts........................................ 07
b. Indoor Unit Installation Instructions.......08
Safety Precautions.....................................05
Outdoor Unit Installation......................... 13
a. Outdoor Unit Installation Instructions......13
b. Outdoor Unit Types and Specifications....14
c. Notes on Drilling Hole in Wall....................15
Drainpipe Installation...............................16
Table of Contents
Installation Manual
Indoor Unit Installation...........................07
Installation Overview...............................06
1
2
5
3
4
6
Indoor Unit Installation...........................07

Page 3 
Refrigerant Piping Connection.......................18
A. Notes on Pipe Length and Elevation...............18
B. Refrigerant Piping Connection Instructions....19
Wiring................................................. 21
a. Outdoor Unit Wiring................... 21
b. Indoor Unit Wiring...................... 22
c. Power Specifications................... 24
Air Evacuation
................................................. 26
a. Evacuation Instructions................................. 26
b. Note on Adding Refrigerant........................ 27
Test Run.............................................28
MC MC
7
8
9
10
L N

Page 4 
Accessories 1
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 fire, or cause the equipment to fail.
QUANTITY
SHAPENAME
Soundproof / insulation sheath 2
1
1
1
1
1
Tubing & Fittings
Others
Installation manual
Transfer connector (some models)
(Φ9.52-Φ9.52)/(Φ0.375in-Φ0.375in)
(Packed with the indoor unit )
NOTE: Pipe size may differ from
appliance to appliance. To meet
different pipe size requirements,
sometimes the pipe connections
need a transfer connector installed
on the outdoor unit.
Component of display control
unit (some models)
1
Owner‘s manual
Drain joint (some models)
Seal ring (some models)
Drainpipe Fittings
(for cooling & heating)
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.
•
1
1
EMC Magnetic
Ring (some
models)
Magnetic ring (wrap the electric
wires S1 & S2 ( P & Q & E ) around
the magnetic ring twice)
Magnetic ring
(Hitch on the connective cable
between the indoor unit and
outdoor unit after installation.)
S1&S2(P&Q&E)

Page 5 
Safety Precautions 2
Read Safety Precautions Before Installation
Incorrect installation due to ignoring instructions can cause serious damage or injury.
The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION.
WARNING
• Carefully read the Safety Precautions before installation.
• In certain functional environments, such as kitchens, server rooms, etc., the use of specially
designed air-conditioning units is highly recommended.
• Only trained and certified technicians should install, repair and service this air
conditioning unit.
Improper installation may result in electrical shock, short circuit, leaks, fire or other damage to
the equipment and personal property.
• Strictly follow the installation instructions set forth in this manual.
Improper installation may result in electrical shock, short circuit, leaks, fire or other damage to
the equipment.
• Before you install the unit, consider strong winds, typhoons and earthquakes that might affect
your unit and locate it accordingly. Failure to do so could cause the equipment to fail.
• After installation, ensure there are no refrigerant leaks and that the unit is operating properly.
Refrigerant is both toxic and flammable and poses a serious health and safety risk.
• This appliance is not intended for use by persons(including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance by a person responsible for
their safety. Children should be supervised to ensure that they do not play with the appliance.
• The appliance (indoor units) shall not be installed in the laundry.
Note about Fluorinated Gasses
1.
This air-conditioning unit contains fluorinated gasses. For specific information on the type of gas
and the amount, please refer to the relevant label on the unit itself.
2. Installation, service, maintenance and repair of this unit must be performed by a certified
technician.
3. Product uninstallation and recycling must be performed by a certified technician.
4. If the system has a leak-detection system installed, it must be checked for leaks at least every 12
months.
5.
When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended.
Failure to observe a warning may result in death. The appliance must be installed in
accordance with national regulations.
Failure to observe a caution may result in injury or equipment damage.
WARNING
CAUTION

Page 6 
Installation Overview 3
Unit Installation
Overview
L N
123
4
5
MC MC
6
7
Install the indoor unit
(Page 7)
INSTALLATION ORDER
Install the outdoor unit
(Page 13)
Install the drainpipe
(Page 16)
Evacuate the refrigeration system
(Page 25)
Connect the wires
(Page 21)
Connect the refrigerant pipes
(Page 18)
Perform a test run
(Page 27)

Page 7 
Indoor Unit Installation 4
Indoor Unit
Installation
Indoor Unit Parts
WARNING
• Securely install the indoor unit on a structure
that can sustain its weight. If the structure is
too weak, the unit may fall causing personal
injury, unit and property damage, or even
death
• DO NOT install the indoor unit in a bathroom
or laundry room as excessive moisture can
short the unit and corrode the wiring.
CAUTION
• Install the indoor and outdoor units, cables
and wires at least 1m (3.2’) from televisions
or radios to prevent static or image
distortion. Depending on the appliances, a
1m (3.2’) distance may not be sufficient.
• If the indoor unit is installed on a metal
part of the building, it must be grounded.
Install the indoor unit at least 2.4m(7.87’)
from the floor.
Indoor Unit Installation Instructions
Step 1: Select installation location
The indoor unit should be installed in a location
that meets the following requirements:
o
Enough room for installation and maintenance.
oEnough room for the connecting pipe and
drainpipe.
oThe ceiling is horizontal and its structure can
sustain the weight of the indoor unit.
oThe air inlet and outlet are not impeded.
oThe airflow can fill the entire room.
oThere is no direct radiation from heaters.
CAUTION
DO NOT install the unit in the following locations:
Where oil drilling or fracking is taking place
Coastal areas with high salt content in the air
Areas with caustic gases in the air, such
as near hot springs
Areas with power fluctuations, such as
factories
Enclosed spaces, such as cabinets
Areas with strong electromagnetic waves
Areas that store flammable materials or gas
Rooms with high humidity, such as
bathrooms or laundry rooms
Fig. 4.2
√
√
√
√
√
√
Safety Precautions
Fig. 4.1
Air outlet Air inlet
Drain hose
Refrigerant connecting pipe
Electric control cabinet
Air filter(inside air-in grill)(optional)
Heat exchanger
Maintenance roomage
checking orifice
600mmX600mm
600mm or more
500mm or more
Air outlet
Air inlet
•

Page 8 
Indoor Unit
Installation
Step 2: Hang indoor unit.
1.
Please refer to the following diagrams to locate the four positioning screw bolt holes on the
ceiling. Be sure to mark the paces where you will drill ceiling hook holes.
This unit has been installed air intake pipe flange, but there is no air filter. (see Fig. 4.3~4.5)
1100
450
270
397
(suspension position)
1146(suspension position)
1054(air outlet duct flange)
185
960
220
1061(air inlet duct flange)
875
315
226
110
29
14 29 14
NOTE: 14 groups all around
Φ5
2-Φ3.2
10 10
2-Φ3.2
Φ5
1010
NOTE: 12 groups all around
120
66
29
29
14
14
Fig. 4.3 (Applicable to 24K series only)
550
1200
495
(suspension position)
1236
(suspension position)
1000
(air outlet duct flange)
1
2345
66
270
900
170
253
1010
2-Φ3.2
Φ5
NOTE: 14 groups all around
130
1145
(air inlet duct flange)
925
325
NOTE: 12 groups all around
10 10
Φ5
2-Φ3.2
334
380
29
14
29
14
29
14 14
29
Fig. 4.4 (Applicable to 30~48K series only)

Page 9 
Indoor Unit
Installation
4
NOTE:16 groups all around
(the same of the air inlet flange)
10
Φ5
2-Φ3.2
10
280 280
1000
500
1000
500
385 (air inlet
duct flange)
385(air outlet
duct flange)
1188(air outlet duct flange)
1188(air inlet duct flange)
1436(suspension position)
700 (suspension position)
770
1400
440
44 20
20 44
44
20
44
20
Fig. 4.5 (Applicable to 60K series only)
5
Table 4-1 (Applicable to 24~60K series only)
Name Description
Gas pipe connection Ø15.9 (24~36K units)
Ø19 (48~60K units)
Liquid pipe connection Ø9.5
Drain pipe connection OD Ø25 ID Ø20
Drain pipe connection Using drain pump (optional)
Power supply connection _
Air discharge flange _
Number
1
2
3
4
5
6

Page 10 
Indoor Unit
Installation
Table.4-2 (unit: mm/inch)
MODEL
(Btu/h)
Outline dimension
A B C
24K 900/35.4 270/10.6525/20.6
30K~36K 1110/43.7 270/10.6525/20.6
45K~60K 1200/47.2 380/15625/24.6
55K~60K 1400/55.1 440/17.3858/33.8
size of
mounted lug
D E F
936/36.8 844/33.2397/15.6
1146/45 1054/41.5397/15.6
1236/48.6 1000/39.3495/19.5
1436/56.5 1188/46.7700/27.5
185/7.2
185/7.2
253/10
385/15
I
780/30.7160/6.3
960/37.8220/8.6
900/35.4270/10.6
1000/39.3500/20
J
G
H
120/4.7
120/4.7
170/6.7
280/11
K
851/33.5
1061/41.7
1145/45
1188/46.7
226/8.9
226/8.9
334/13.1
325/12.8
N
665/26.2215/8.4
875/34.4315/12.4
925/36.4325/12.8
1000/39.3500/20
O
L
M
110/4.3
110/4.3
130/5.1
280/11
Name fixed-frequency
Gas pipe connection Ø15.9 (24~36K units)
Ø19 (48~60K units)
Liquid pipe connection Ø9.5
Drain pipe connection OD Ø25 ID Ø20
Drain pipe connection
Using drain pump (optional)
Power supply connection _
Air inlet duct flange _
Air outlet duct flange _
Number
1
2
3
4
5
6
7
The size of installation for indoor unit following the Fig.4-6, This unit has installed with air filter.
Fig. 4.6
D
A
H
I
F
M N
K
E
J
G
O
L
C
B
air inlet opening size
(symmetry of air inlet opening)
air outlet opening size
(symmetry of air outlet opening)
Air filter optional
inverter
Ø15.9
Ø9.5
OD Ø25 ID Ø20
Using drain pump (optional)
_
_
_
optional
8
Table.4-3

Page 11 
Indoor Unit
Installation
Cut off the roof beam.
Strengthen the point at which the cut
was made. Consolidate the roof beam.
Fig. 4.9
Fig. 4.10
Original concrete bricks
Use an embedding screw bolt, crock, and
stick
Steel roof beam structure
Install and use the supporting steel angle.
(See Fig.4.10)
Fig. 4.7
Wood
Place the wood mounting across the roof
beam,
then install the hanging screw bolts.(See
Wood mounting
Roof beam
Hanging screw bolts
Ceiling
Fig. 4.8
New concrete bricks
Inlay or embed the screw bolts. (See Fig.4.8)
(Blade shape insertion) (Slide insertion)
Steel bar
Embedding screw bolt
(Pipe hanging and embedding screw bolt)
Hanging screw bolt
Hanging
bolts
Supporting
angle steel
Fig. 4.12
Screw nut
Washer
Hanging screw bolt
Overhang part
Shockproof cushion
NOTE: Confirm the minimum drain tilt is 1/100 or
more.
CAUTION
The unit body must be completely aligned with
the hole. Ensure that the unit and the hole are
the same size before moving on.
2. Install and fit pipes and wires after you have
finished installing the main body.When
choosing where to start, determine the
direction of the pipes to be drawn out.
Especially in cases where there is a ceiling
involved, align the refrigerant pipes, drain
pipes, and indoor and outdoor lines with their
connection points before mounting the unit.
3.
Install hanging screw bolts.
4. After you select an installation location,align
the refrigerant pipes, drain pipes, as well as
indoor and outdoor wires with their
connection points before mounting the unit.
5.
Drill 4 holes 10cm (4”) deep at the ceiling
hook positions in the internal ceiling. Be sure
to hold the drill at a 90° angle to the ceiling.
6. Secure the bolt using the washers and nuts
provided.
7. Install the four suspension bolts.
8.
Mount the indoor unit with at least two
people to lift and secure it. Insert suspension
bolts into the unit’s hanging holes. Fasten
them using the washers and nuts provided.
(See Fig. 4.11).
9. Mount the indoor unit onto the hanging
screw bolts with a block. Position the
indoor unit flat using a level indicator to
prevent leaks. (See Fig. 4.12).
Fig. 4.11

Page 12 
Indoor Unit
Installation
•
Fig. 4.13
Fig. 4.15
Fig. 4.16
Fig. 4.17
Fig. 4.18
Fig. 4.19
Fig. 4.20
Fig. 4.21
Fig. 4.14
Step 4: Duct and accessories installation
NOTE: 1. Do not put the connecting duct
weight on the indoor unit.
2. When connecting the duct, use an
nonflammable canvas tie-in to prevent
vibrating.
3. When connecting duct, install in place prone
to takedown for maintenance.
4. Change the fan motor static pressure
corresponding to external duct static pressure.
5. If installed in place like meeting room where
noise is easy to be perceived, design isolation
booth and internal duct underlayer to muffle
the duct system and weaken the air
encounter noise in the duct.
1. The air inlet and air outlet duct should be far
enough apart enough to prevent air outlet
entering Air Inlet.
Step 3: Diagrammatic sketch for installing
the main body
Installing the dust proof net and canvas air
passage
2. There is dust filter on the indoor unit.
3. Please attach the outside air duct to the indoor
air outlet/inlet flange by using the type
ST3.9 x 10 screw.
4. Connect the duct according to the following
diagram:
Canvas tie-in Canvas tie-in
Air outlet
Isolation booth
Isolation booth
checking orifice
Air inlet
Air dust filter
1. Install the dust proof net according to the
installation manual.
There are three methods:
1: Remove the front side plate from the top.
• Remove the top cover as shown.
3: Repair it directly (only applicable to plastic
scroll and fan wheel)
2: Remove the front side plate from the bottom.
• Remove the bottom base as shown.
2. Install the canvas air passage underneath the
dust proof net.
Step 5: Motor and drain pump maintenance
Pump maintainance:
Remove four screws from the drain pump.
Unplug the pump power supply and water
level switch cable.
Detach the pump.
1.
2.
3.
Pump
Motor maintain:
Loosen the four bolts and two screws which
used to fasten the front side plate.
• Loosen the four bolts and two screws which
used to fasten the front side plate(Be careful,
the front side plate may fall down)
• Remove the cord of motor, take off the
front side plate and repair the motor.
• Remove the cord of motor, take off the
front side plate and repair the motor.
• Take off the chassis assembly and filter .
• Take off the volute. • Take off the motor.
Motor
Volute
Filter
Chassis assembly

Page 13 
Outdoor Unit
Installation
Outdoor Unit Installation
Outdoor Unit Installation Instructions
Step 1: Select installation location.
The outdoor unit should be installed in the
location that meets the following requirements:
oPlace the outdoor unit as close to the indoor
unit as possible.
oEnsure that there is enough room for
installation and maintenance.
oThe air inlet and outlet must not be
obstructed or exposed to strong wind.
oEnsure the location of the unit will not be
subject to snowdrifts, accumulation of
leaves or other seasonal debris. If possible,
provide an awning for the unit. Ensure the
awning does not obstruct airflow.
oThe installation area must be dry and well
ventilated.
o There must be enough room to install the
connecting pipes and cables and to access
them for maintenance.
o The area must be free of combustible gases
and chemicals.
oThe pipe length between the outdoor and
indoor unit may not exceed the maximum
allowable pipe length.
oIf possible, DO NOT install the unit where it
is exposed to direct sunlight.
oIf possible, make sure the unit is located far
away from your neighbors’ property so that
the noise from the unit will not disturb them.
o
If the location is exposed to strong winds (for
example: near a seaside), the unit must be
placed against the wall to shelter it from the
wind. If necessary, use an awning. (See Fig.
5.1 & 5.2)
o
Install the indoor and outdoor units, cables
and wires at least 1 meter from televisions or
radios to prevent static or image distortion.
Depending on the radio waves, a 1 meter
distance may not be enough to eliminate all
interference.
Strong wind
Strong wind
Strong wind
Fig. 5.1 Fig. 5.2
Step 2: Install outdoor unit.
Fix the outdoor unit with anchor bolts (M10)
>60cm / 23.6”
Fix with bolts
CAUTION
• Be sure to remove any obstacles that
may block air circulation.
• Make sure you refer to Length
Specifications to ensure there is
enough room for installation and
maintenance.
Fig. 5.3
5
√
√
√
√
√
√
√
√
√
√
√
√

Page 14 
Outdoor Unit
Installation
>120cm / 47”
Air Outlet
(Wall or obstacle)
H
D
W
>30cm / 11.8”
Air inlet
Air inlet Air inlet
Air inlet
(Wall or obstacle)
>30cm / 11.8”
>30cm / 11.8”
>30cm / 11.8”
Table 5.1: Length Specifications of Split
Type Outdoor Unit (unit: mm/inch)
Table 5.2: Length Specifications of Vertical
Discharge Outdoor Unit (unit: mm/inch)
MODEL
DIMENSIONS
W H D
18 633/25 554/21.8554/21.8
24 633/25 554/21.8554/21.8
36 759/29.8 554/21.8554/21.8
36 633/25 600/23.6600/23.6
48 759/29.8 710/28710/28
60 843/33 710/28710/28
Split Type Outdoor Unit
(Refer to Fig 5.4, 5.5, 5.6, 5.10 and Table 5.1)
Vertical Discharge Type Outdoor Unit
(Refer to Fig 5.7, 5.8, 5.9 and Table 5.2)
Fig. 5.7
Fig. 5.8
Fig. 5.9
Fig. 5.6
Fig. 5.5
A
B
D
W
H
W
H
Fig. 5.4
Outdoor Unit Dimensions
W x H x D
Mounting Dimensions
Distance A Distance B
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)
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)
845x702x363 (33.27x27.6x14.3) 540 (21.26) 350 (13.8)
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)

Page 15 
Outdoor Unit
Installation
NOTE: The minimum distance between the
outdoor unit and walls described in the
installation guide does not apply to airtight
rooms. Be sure to keep the unit unobstructed
in at least two of the three directions (M, N, P)
(See Fig. 5.10)
M
N
P
30 cm / 11.8” from back wall
60 cm / 23.6” on right
60 cm / 23.6” above
30 cm / 11.8” on left
200 cm / 78” in front
Fig. 5.10
Drain Joint Installation
Before bolting the outdoor unit in place, you
must install the drain joint at the bottom of the
unit. (See Fig. 5.12)
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.
NOTE: Make sure the water drains to a safe
location where it will not cause water damage
or a slipping hazard.
Seal
Drain joint
(A) (B)
Base pan hole of
outdoor unit
Seal
Fig. 5.12
Notes On Drilling Hole In Wall
You must drill a hole in the wall for the
refrigerant piping, and the signal cable that will
connect the indoor and outdoor units.
1. Determine the location of the wall hole
based on the location of the outdoor unit.
2. Using a 65-mm (2.5”) core drill, drill a hole
in the wall.
NOTE: When drilling the wall hole, make
sure to avoid wires, plumbing, and other
sensitive components.
3. Place the protective wall cuff in the hole.
This protects the edges of the hole and will
help seal it when you finish the installation
process.
Fig. 5.11
L
H
300 cm / 118” or more
A
60 cm / 23.6”
or more
150 cm / 59”
or more
25 cm / 9.8”
or more
25 cm / 9.8”
or more
Rows of series installation
L ≤ H L ≤ 1/2H
L A
25 cm / 9.8” or more
1/2H < L ≤ H 30 cm / 11.8” or more
L > H Can not be installed
Table 5.3 The relations between H, A and L
are as follows.

Page 16 
Drainpipe Installation
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 1/50 to prevent water
from flowing 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
55cm (21.7”) from the ceiling board and
the distance between the unit and the lift
pipe must be less than 20cm (7.9”).
Incorrect installation could cause water to
flow back into the unit and flood.
• To prevent air bubbles, keep the drain hose
level or slightly tiled up (<75mm / 3”).
Fig. 6.3
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 = 3.7-3.9cm, interior
diameter = 3.2cm), which can be obtained at
your local hardware store or dealer.
Indoor Drainpipe Installation
Install the drainpipe as illustrated in Figure 6.2.
1.
2.
Drainpipe
connecting port
Drain hose
Pipe clasp Insulation
Fig. 6.1
Drainpipe Installation
(39-59”)
(7.9”)
<20cm
(21.7”)
<55cm
Fig. 6.2
Lean over 1/50
1-1.5m1-1
(39-59”)
1-1.5m1-1
Drainpipe installation for units with a pump
Lean over 1/50
Ceiling
Ceiling
0 - 75mm
(3”)
6
Cover the drainpipe with heat insulation to
prevent condensation and leakage.
Attach the mouth of the drain hose to the
unit’s outlet pipe. Sheath the mouth of the
hose and clip it firmly with a pipe clasp.
(Fig 6.1)
NOTE: When connecting multiple drainpipes,
install the pipes as shown in Fig 6.4.
0-53cm
(20.8”)
≥10cm
(4”)
Fig. 6.4

Drainage test
Check that the drainpipe is unhindered.
This test should be performed on newly built
houses before the ceiling is paved.
The unit with pump.
The unit without pump.
1. Remove the test cover.
Fill the water pan with 2 liters of water.
2. Turn on the unit in COOLING mode. You will
hear the drain pump.Check whether the
water is discharged properly (a 1-minute lag
is possible, depending on the length of the
drain pipe), Check whether water leaks from
the joints.
3. Turn off the air conditioner and put the cap
back on.
3. Using a 65-mm (2.5”) 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 (See Fig. 6.5). Place the
protective wall cuff in the hole. This protects
the edges of the hole and will help seal it
when you finish the installation process.
Wall
IndoorOutdoor
≈ 12mm / 0.5 inch
Fig. 6.5
NOTE: When drilling the wall hole, make sure
to avoid wires, plumbing, and other sensitive
components.
4. 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 17 
Fig.6.7
Fig.6.8
Fig.6.6
Fill the water pan with 2 liters of water.
Check that the drainpipe is unhindered.
Drainpipe Installation
Stow tube
Test cap
C
L
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E
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E
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Stow tube

Page 18 
Refrigerant Piping
Connection
Refrigerant Piping Connection
Safety Precautions
WARNING
• All field piping must be completed by a
licensed technician and must comply with
the local and national regulations.
• When the air conditioner is installed in a
small room, measures must be taken to
prevent the refrigerant concentration in the
room from exceeding the safety limit in the
event of refrigerant leakage. If the
refrigerant leaks and its concentration
exceeds its proper limit, hazards due to lack
of oxygen may result.
• When installing the refrigeration system,
ensure that air, dust, moisture or foreign
substances do not enter the refrigerant
circuit. Contamination in the system may
cause poor operating capacity, high
pressure in the refrigeration cycle,
explosion or injury.
• Ventilate the area immediately if there is
refrigerant leakage during the installation.
Leaked refrigerant gas is both toxic and
flammable. Ensure there is no refrigerant
leakage after completing the installation
work.
Notes On Pipe Length and Elevation
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 Table 7.1:
Table 7.1: 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
7

Page 19 
Refrigerant Piping
Connection
Refrigerant Piping Connection Instructions
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.
Step1: Cut pipes
When preparing refrigerant pipes, take extra
care to cut and flare them properly. This will
ensure efficient 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.
CAUTION
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 efficiency of the unit.
1.Make sure that the pipe is cut at a perfect 90°
angle. Refer to Fig. 7.1 for examples of bad cuts
Oblique Rough Warped
90°
Fig. 7.1
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
Fig. 7.2
Step 3: Flare pipe ends
Proper flaring 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 flare 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 flaring. See
Fig. 7.3
Flare nut
Copper pipe
Fig. 7.3
4. Remove PVC tape from ends of pipe when
ready to perform flaring work.
5. Clamp flare form on the end of the pipe.
The end of the pipe must extend beyond
the flare form.
Flare form
Pipe
Fig. 7.4

Page 20 
Refrigerant Piping
Connection
6. Place flaring tool onto the form.
7. Turn the handle of the flaring tool
clockwise until the pipe is fully flared. Flare
the pipe in accordance with the dimensions
shown in table 7.2.
Table 7.2: PIPING EXTENSION BEYOND FLARE
FORM
Pipe
gauge
Tightening
torque
Flare dimension (A)
(Unit: mm/Inch)
Flare shape
Min. Max .
Ø 6.4 14.2-17.2 N.m
(144-176 kgf.cm) 8.3/0.3 8.3/0.3
R0.4~0.8
45°±2
90 °
±4
A
Fig. 7.5
Ø 9.5 32.7-39.9 N.m
(333-407 kgf.cm) 12.4/0.48 12.4/0.48
Ø 12.7 49.5-60.3 N.m
(504-616 kgf.cm) 15.4/0.6 15.8/0.6
Ø 15.9 61.8-75.4 N.m
(630-770 kgf.cm) 18.6/0.7 19/0.74
Ø 19.1 97.2-118.6 N.m
(990-1210 kgf.cm) 22.9/0.9 23.3/0.91
8. Remove the flaring tool and flare form,
then inspect the end of the pipe for cracks
and even flaring.
Step 4: Connect pipes
Connect the copper pipes to the indoor unit first,
then connect it to the outdoor unit. You should
first connect the low-pressure pipe, then the high-
pressure pipe.
1. When connecting the flare nuts, apply a
thin coat of refrigeration oil to the flared
ends of the pipes.
2. Align the center of the two pipes that you
will connect.
Indoor unit tubing Flare nut Pipe
Fig. 7.6
3. Tighten the flare nut as tightly as possible
by hand.
4. Using a spanner, grip the nut on the unit
tubing.
5. While firmly gripping the nut, use a torque
wrench to tighten the flare nut according
to the torque values in table 7.2.
NOTE: Use both a spanner and a torque wrench
when connecting or disconnecting pipes to/from
the unit.
Fig. 7.7
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 pipewith thumb
min-radius 10cm (3.9”)
Fig. 7.8
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.
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 flow 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).
Ø 22 109.5-133.7 N.m
(1117-1364 kgf.cm) 27/1.06 27.3/1.07