Samsung AC024KN4DCH User manual

Air conditioner
Installation manual
AC✴✴✴KN4DCH
•Thank you for purchasing this Samsung air conditioner.
•Before operating this unit, please read this manual carefully and retain it for future
reference.
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2English
Contents
Safety Information 3
Installation Procedure 5
Step 1 Checking and preparing accessories
Step 2 Choosing the installation location
Step 3 Optional: Insulating the body of the indoor unit
Step 4 Installing the indoor unit
Step 5 Purging inert gas from the indoor unit
Step 6 Cutting and flaring the pipes
Step 7 Connecting the assembly pipes to the refrigerant pipes
Step 8 Performing the gas leak test
Step 9 Insulating the refrigerant pipes
Step 10 Installing the drain hose and drain pipe
Step 11 Performing the drainage test
Step 12 Connecting the power and communication cables
Step 13 Optional: Extending the power cable
Step 14 Setting the indoor unit addresses and the installation options
Appendix 37
Troubleshooting
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3English
Safety Information
WARNING
• State of California Proposition 65 Warning (US only)
This product contains chemicals known to the State
of California to cause cancer, birth defects, or other
reproductive harm.
WARNING
• Hazards or unsafe practices that may result in severe
personal injury or death.
CAUTION
• Hazards or unsafe practices that may result in minor
personal injury or property damage.
• Carefully follow the precautions listed below because
they are essential to guarantee the safety of the
equipment.
WARNING
• Always disconnect the air conditioner from the power
supply before servicing it or accessing its internal
components.
• Verify that installation and testing operations are
performed by qualified personnel.
• Verify that the air conditioner is not installed in an
easily accessible area.
General information
WARNING
• Carefully read the content of this manual before
installing the air conditioner and store the manual in
a safe place in order to be able to use it as reference
after installation.
• For maximum safety, installers should always
carefully read the following warnings.
• Store the operation and installation manual in a safe
location and remember to hand it over to the new
owner if the air conditioner is sold or transferred.
• This manual explains how to install an indoor unit
with a split system with two SAMSUNG units. The use
of other types of units with different control systems
may damage the units and invalidate the warranty.
The manufacturer shall not be responsible for
damages arising from the use of non compliant units.
• The manufacturer shall not be responsible for damage
originating from unauthorized changes or the
improper connection of electric and requirements set
forth in the “Operating limits” table, included in the
manual, shall immediately invalidate the warranty.
• The air conditioner should be used only for the
applications for which it has been designed: the
indoor unit is not suitable to be installed in areas
used for laundry.
• Do not use the units if damaged. If problems occur,
switch the unit off and disconnect it from the power
supply.
• In order to prevent electric shocks, fires or injuries,
always stop the unit, disable the protection switch
and contact SAMSUNG’s technical support if the unit
produces smoke, if the power cable is hot or damaged
or if the unit is very noisy.
• Always remember to inspect the unit, electric
connections, refrigerant tubes and protections
regularly. These operations should be performed by
qualified personnel only.
• The unit contains moving parts, which should always
be kept out of the reach of children.
• Do not attempt to repair, move, alter or reinstall the
unit. If performed by unauthorized personnel, these
operations may cause electric shocks or fires.
• Do not place containers with liquids or other objects
on the unit.
• All the materials used for the manufacture and
packaging of the air conditioner are recyclable.
• The packing material and exhaust batteries of the
remote controller(optional) must be disposed of in
accordance with current laws.
• The air conditioner contains a refrigerant that has
to be disposed of as special waste. At the end of its
life cycle, the air conditioner must be disposed of in
authorized centres or returned to the retailer so that
it can be disposed of correctly and safely.
Safety Information
Safety Information
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4
Safety Information
English
Safety Information
Installing the unit
WARNING
IMPORTANT: When installing the unit, always remember
to connect first the refrigerant tubes, then the electrical
lines.
• Always disassemble the power cables before
disconnecting the refrigerant pipe.
• Upon receipt, inspect the product to verify that
it has not been damaged during transport. If the
product appears damaged, DO NOT INSTALL it and
immediately report the damage to the carrier or
retailer (if the installer or the authorized technician
has collected the material from the retailer.)
• After completing the installation, always carry out a
functional test and provide the instructions on how to
operate the air conditioner to the user.
• Do not use the air conditioner in environments with
hazardous substances or close to equipment that
release free flames to avoid the occurrence of fires,
explosions or injuries.
• Our units should be installed in compliance with the
spaces shown in the installation manual, to ensure
accessibility from both sides and allow repairs
or maintenance operations to be carried out. The
unit’s components should be accessible and easy to
disassemble without endangering people and objects.
For this reason, when provisions of the installation
manual are not complied with, the cost required to
access and repair the units (in SAFETY CONDITIONS,
as set out in prevailing regulations) with harnesses,
ladders, scaffolding or any other elevation system
will NOT be considered part of the warranty and will
be charged to the end customer.
Power supply line, fuse or circuit
breaker
WARNING
• Always make sure that the power supply is compliant
with current safety standards. Always install the air
conditioner in compliance with current local safety
standards.
• Always verify that a suitable grounding connection is
available.
• Verify that the voltage and frequency of the power
supply comply with the specifications and that the
installed power is sufficient to ensure the operation
of any other domestic appliance connected to the
same electric lines.
• Always verify that the cut-off and protection switches
are suitably dimensioned.
• Verify that the air conditioner is connected to the
power supply in accordance with the instructions
provided in the wiring diagram included in the
manual.
• Always verify that electric connections (cable entry,
section of leads, protections…) are compliant with
the electric specifications and with the instructions
provided in the wiring scheme. Always verify that all
connections comply with the standards applicable to
the installation of air conditioners.
• Devices disconnected from the power supply should
be completely disconnected in the condition of
overvoltage category.
CAUTION
Make sure that you earth the cables.
• Do not connect the earth wire to the gas pipe, water
pipe, lighting rod or telephone wire. If earthing is not
complete, electric shock or fire may occur.
Install the circuit breaker.
• If the circuit breaker is not installed, electric shock or
fire may occur.
Make sure that the condensed water dripping from the
drain hose runs out properly and safely.
Install the power cable and communication cable of the
indoor and outdoor unit at least 1m (3.3ft) away from
the electric appliance.
Install the indoor unit away from lighting apparatus
using a ballast.
• If you use the wireless remote control, reception error
may occur due to the ballast of the lighting apparatus.
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5
Installation Procedure
English
Installation Procedure
Installation Procedure
Do not install the air conditioner in following places.
• Place where there is mineral oil or arsenic acid. Resin
parts flame and the accessories may drop or water
may leak. The capacity of the heat exchanger may
reduce or the air conditioner may be out of order.
• The place where corrosive gas such as sulphuric acid
gas generates from the vent pipe or air outlet.
• The copper pipe or connection pipe may corrode and
refrigerant may leak.
• The place where there is a machine that generates
electromagnetic waves. The air conditioner may not
operate normally due to control system.
• The place where there is a danger of existing
combustible gas, carbon fibre or flammable dust.
• The place where thinner or gasoline is handled. Gas
may leak and it may cause fire.
Step 1 Checking and preparing
accessories
The following accessories are supplied with the indoor
unit.
Insulation pipe (3 ea) Cable-tie (6 ea)
Drain hose (1 ea) Installation manual (1 ea)
Clamp (1 ea) User manual (1 ea)
Installation template (1 ea) Bushing bracket (1 ea)
Dimension gauge (1 ea)
Step 2 Choosing the installation
location
Installation location requirements
• There must be no obstacles near the air inlet and
outlet.
• Install the indoor unit on a ceiling that can support its
weight.
• Maintain sufficient clearance around the indoor unit.
• Before installing the indoor unit, be sure to check
whether the chosen location is well-drained.
• The indoor unit must be installed such that it is
beyond public access and is not touchable by users.
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6
Installation Procedure
Installation Procedure
English
Indoor unit dimensions
Unit: mm (inch)
Category Square panel Circular panel
Front
1000 (39.40)
358 (14.11)
Ceiling opening dimension
960 (37.80)
[950 (37.40) - 960 (37.80)]
Ceiling opening dimension
960 (37.80)
[950 (37.40) - 960 (37.80)]
116
(4.57)
1050 (41.37)
883 (34.79)
Large
385
(15.17)
166 (6.54)
66 (2.60)
357
(14.07)
404
(15.92)
128 (5.04) 181 (7.13) 190 (7.49) 317 (12.49)
100 (3.94) 153 (6.03) 162 (6.38)
289 (11.39)
138 (5.44)
94 (3.70)
Small
385
(15.17)
166 (6.54)
66 (2.60)
357
(14.07)
404
(15.92)
128 (5.04) 181 (7.13) 190 (7.49) 233 (9.18)
100 (3.94) 153 (6.03) 162 (6.38) 205 (8.08)
138 (5.44)
94 (3.70)
Common
646 (25.45)
646 (25.45)
942 (37.11)
787 (31.01)
80 (3.15)
ø100 (3.94)
H1
H1 →Large: 180 (7.09), Small: 150 (5.91)
H2 →Large: 152 (5.98), Small: 122 (4.80)
H2
Square panel Circular panel
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Installation Procedure
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Model AC018KN4DCH AC024KN4DCH AC030KN4DCH AC036KN4DCH AC042KN4DCH AC048KN4DCH
Chassis Small Large
Net dimension
(W × D × H)
mm
(in.)
947 x 947 x 281
(37.28 x 37.28 x
11.06)
947 x 947 x 281
(37.28 x 37.28 x
11.06)
947 x 947 x 365
(37.28 x 37.28 x
14.37)
947 x 947 x 365
(37.28 x 37.28 x
14.37)
947 x 947 x 365
(37.28 x 37.28 x
14.37)
947 x 947 x 365
(37.28 x 37.28 x
14.37)
Net weight kg
(lb) 21.0 (46.3) 21.0 (46.3) 24 (53.9) 24 (53.9) 24 (53.9) 24 (53.9)
Liquid pipe
connection
mm
(in.) 6.35 (1/4) 6.35 (1/4) 9.52 (3/8) 9.52 (3/8) 9.52 (3/8) 9.52 (3/8)
Gas pipe
connection
mm
(in.) 12.7 (1/2) 15.88 (5/8) 15.88 (5/8) 15.88 (5/8) 15.88 (5/8) 15.88 (5/8)
Drain hose
connection
mm
(in.) Outer diameter : ø32.0 (1.26"), inner diameter : 26.5 (1.04")
A
A : 1500 mm or more
A
A
A
'C'
Indoor unit
2500 (98.5) or more
Obstruction
20 (0.79 )
1500 (59.10)
or more
10 (0.39)
Model AC018KN4DCH AC024KN4DCH AC030KN4DCH AC036KN4DCH AC042KN4DCH AC048KN4DCH
Cmm (in.) 261 (10.27) 261 (10.27) 345 (13.58) 345 (13.58) 345 (13.58) 345 (13.58)
Spacing requirements
Unit: mm (inch)
• The circular panel is by default available in exposed
installation.
• Make inspection holes on the ceiling for easier
installation and maintenance, as shown in the
following table. (The size of an inspection hole must
be at least 450 mm x 450 mm.)
• A suspended ceiling structure can substitute for the
inspection holes.
Category
Inspection hole
Recessed installation Exposed
installation
Integrated suspended
Square panel 1 ea
-
Circular panel 2 ea
• For the recessed installation of the circular panel
Refrigerant
pipe
Connection part of the
drain hose
Indoor unit
display
Inspection hole 1050 (41.37)
883 (34.79)
ø1010 to 1020
(ø39.76 to 40.16)
Ceiling opening diameter
ø1010 to 1020
(ø39.76 to 40.16)
Inspection hole
NOTE
The clearance between the panel and the inspection hole
is 15 to 20 mm (0.59 to 0.79 in.) on a side.
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Installation Procedure
Installation Procedure
English
CAUTION
• The indoor unit must be installed according to the
specified distances in order to permit accessibility
from each side, to guarantee correct operation,
maintenance, and repair of the unit.
The components of the indoor unit must be reachable
and removable under safe conditions for people and
the unit.
• Do not hold the discharge while carrying the indoor
unit to avoid the possibility of breakage.
• You must hold the hanger plate on the corner and
carry the indoor unit.
Step 3 Optional: Insulating the body
of the indoor unit
If you install a cassette type indoor unit on the ceiling
when temperature is over 27°C (80.6°F) and humidity is
over 80%, you must apply an extra 10 mm (0.39 in.) thick
polyethylene insulation or a similar type of insulation to
the body of the indoor unit.
Cut away the part where pipes are pulled out for the
insulating work.
A
Insulate the end of the pipe and some curved area by
using separate insulator.
NOTE
• A: Reference for the outer circumference of the unit
(When insulating the body of the indoor unit, use A as
the reference for its outer circumference.)
Indoor unit type and models Dimensions
360 cassette type
<S>
947 x 947 x 281 mm
(37.28 x 37.28 x
11.06 in.)
AC018KN4DCH
2610 x 130 mm
(102.76 x 5.12 in.)
AC024KN4DCH
360 cassette type
<L>
947 x 947 x 365 mm
(37.28 x 37.28 x
14.37 in.)
AC030KN4DCH
2610 x 215 mm
(102.76 x 8.46 in.)
AC036KN4DCH
AC042KN4DCH
AC048KN4DCH
Step 4 Installing the indoor unit
When deciding on the location of the air conditioner the
following restrictions must be taken into account.
1 Determine the positions of the pipe and the drain
hose hole as shown in the pattern sheet, and drill the
hole with an inner diameter of 14 mm (0.55 in.).
NOTE
• Since the diagram is made of paper, it may shrink
or stretch slightly due to temperature or humidity.
For this reason, before drilling the holes, be sure
to maintain the correct dimensions between the
markings.
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Installation Procedure
English
2 Perform the following steps to install inspection holes
in accordance with the panel type.
a For the recessed installation of the square panel.
• Install an inspection hole to the direction of
connection parts of the refrigerant pipe and the
drain hose. (1 point)
Indoor unit
display
Refrigerant pipe
Inspection hole
b For recessed installation of the circular panel
• Install inspection holes to both directions of the
connection part of the refrigerant pipe and the
drain hose and of the indoor unit display. (2
points)
Refrigerant pipe
Indoor unit display
Inspection hole
Inspection hole
3 Insert bolt anchors, use existing ceiling supports or
construct a suitable support as shown in figure.
Concrete
Hole in anchor
Hole in plug
Suspension bolt [Ø9.52 mm (3/8 in.) or M10] - eld supply
Insert
4 Install the suspension bolts, depending on the ceiling
type.
Ceiling support
CAUTION
• Make sure that the ceiling is strong enough to support
the weight of the indoor unit. Before hanging the
unit, test the strength of each attached suspension
bolt.
• If the length of the suspension bolt is more than 1.5
m (4.92 ft), you are required to prevent vibration.
5 Screw eight pairs of nuts and washers to the
suspension bolts, making space for hanging the
indoor unit.
CAUTION
• You must install all of the suspension rods.
• It is important to leave sufficient space in the false
ceiling to allow access for maintenance or repairs to
the drainage pipe connection, the refrigerant pipe
connection, or to remove the unit if necessary.
6 Hang the indoor unit to the suspension bolts between
two nuts. Screw the nuts to suspend the unit. Cut a
pad stopper and place it on the bracket at this time
1
2
2
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10
Installation Procedure
Installation Procedure
English
7 Adjust the unit to the appropriate position, taking into
account the installation area for the front panel.
• Place the pattern sheet on the indoor unit.
• Adjust the space between the ceiling and the
indoor unit by using a dimension gauge.
• Fix the indoor unit securely after adjusting the
level of the unit by using a leveller.
• Remove the pattern sheet and install the front
panel.
For the recessed installation
of the square panel:
11.5 mm (0.45 in.)
For the recessed installation
of the circular panel:
41.5 mm (1.63 in.)
Indoor unit
Ceiling
Gauge of
dimensions
Step 5 Purging inert gas from the
indoor unit
The indoor unit comes with nitrogen gas (inert gas)
charged at the factory. Therefore, all inert gas must be
purged before connecting the assembly piping.
Unscrew the pinch pipe at the end of each refrigerant
pipe.
Liquid side
Gas side
Insulator
NOTE
• To prevent dirt or foreign objects from getting into
the pipes during installation, do not remove the pinch
pipe completely until you are ready to connect the
piping.
Step 6 Cutting and flaring the pipes
1 Make sure that you have the required tools available:
pipe cutter, reamer, flaring tool, and pipe holder.
2 If you wish to shorten the pipes, cut them with a pipe
cutter, ensuring that the cut edge remains at a 90°
angle to the side of the pipe. Refer to the illustrations
below for examples of edges cut correctly and
incorrectly.
Pipe cutter
Pipe Oblique Rough Burr
3 To prevent any gas from leaking out, remove all burrs
at the cut edge of the pipe, using a reamer.
4 Slide a flare nut on to the pipe and modify the flare.
Pipe Flare
D
A
Flare
R 0.4 to 0.8 mm
(0.016 to 0.032 in.)
D
L
90° ±2°
45° ±2°
Outer Diameter (D) Depth (A) Flare dimension (L)
mm inch mm inch mm inch
6.34 1/4 1.3 0.051 8.7 to 9.1 0.34 to 0.36
9.52 3/8 1.8 0.071 12.8 to 13.2 0.5 to 0.52
12.7 1/2 2.0 0.079 16.2 to 16.6 0.64 to 0.65
15.88 5/8 2.2 0.087 19.3 to 19.7 0.76 to 0.78
19.05 3/4 2.2 0.087 23.6 to 24.0 0.93 to 0.95
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Installation Procedure
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5 Check that the flaring is correct, referring to the
illustrations below for examples of incorrect flaring.
Correct Inclined Damaged
Surface
Cracked Uneven
Thickness
Step 7 Connecting the assembly
pipes to the refrigerant pipes
There are two refrigerant pipes of different diameters :
• A smaller one for the liquid refrigerant.
• A larger one for the gas refrigerant. The inside of
copper pipe must be clean and has no dust.
1 Remove the pinch pipe on the pipes and connect the
assembly pipes to each pipe, tightening the nuts, first
manually and then with a torque wrench, a spanner
applying the following torque.
2
3
3
1
Spanner
Union
Torque
wrench
Flare nut
Outer Diameter (D) Torque
mm in. N·m lbf·ft
6.35 1/4 14 to 18 10.3 to 13.3
9.52 3/8 34 to 42 25.1 to 31.0
12.7 1/2 49 to 61 36.1 to 45.0
15.88 5/8 68 to 82 50.2 to 60.5
19.05 3/4 100 to 120 73.8 to 88.5
NOTE
• If the pipes must be shortened, see Step 6 Cutting
and flaring the pipes on page 10.
2 Be sure to use an insulator thick enough to cover the
refrigerant tube to protect the condensate water on
the outside of the pipe falling onto the floor and to
improve the efficiency of the unit.
3 Cut off any excess foam insulation.
4 Make sure that there are no cracks or waves on the
bent area.
5 It would be necessary to double the insulation
thickness (10 mm (0.39 in.) or more) to prevent
condensation even on the insulator when if the
installed area is warm and humid.
6 Do not use joints or extensions for the pipes
connecting the indoor and outdoor units. The only
permitted connections are those for which the units
are designed.
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12
Installation Procedure
Installation Procedure
English
CAUTION
• Connect the indoor and outdoor units using pipes
with flared connections (not supplied). For the lines,
use insulated, unwelded, degreased and deoxidized
copper pipe (Cu DHP type to ISO 1337 or UNI EN
12735-1), suitable for operating pressures of at least
4.2 MPa (609.2 psi) and for a burst pressure of at
least 20.7 Mpa (3002.3 psi). Copper pipe for hydro-
sanitary applications is completely unsuitable.
• For sizing and limits (height difference, line length,
max. bends, refrigerant charge, etc.) see the outdoor
unit installation manual.
• All refrigerant connection must be accessible, in order
to permit either unit maintenance or removing it
completely.
• If the pipes require brazing, make sure that oxygen
free nitrogen (OFN) is flowing through the system.
• Nitrogen blowing pressure range is 0.02 to 0.05 Mpa
(2.9 to 7.25 psi).
Step 8 Performing the gas leak test
To identify potential gas leaks on the indoor unit, inspect
the connection area of each refrigerant pipe using a leak
detector for R-410A.
Before recreating the vacuum and recirculating the
refrigerant gas, pressurize the whole system with
nitrogen (using a cylinder with a pressure reducer) at a
pressure above 4 MPa [594.7 psig (gauge)] in order to
immediately detect leaks on the refrigerant fittings.
Made vacuum for 15 minutes and pressurizing system
with nitrogen.
Liquid side
Gas side
Insulator
Step 9 Insulating the refrigerant
pipes
Once you have checked that there are no leaks in the
system, you can insulate the piping and hose.
1 To avoid condensation problems, place Acrylonitrile
Butadien Rubber separately around each refrigerant
pipe.
No gap
NBR
NOTE
• Always make the seam of pipes face upwards.
2 Wind insulating tape around the pipes and drain hose
avoiding compressing the insulation too much.
3 Finish wrapping insulating tape around the rest of the
pipes leading to the outdoor unit.
4 The pipes and electrical cables connecting the indoor
unit with the outdoor unit must be fixed to the wall
with suitable ducts.
Indoor unit
Insulation cover pipe
Insulation pipe
Be sure to overlap
the insulation.
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Installation Procedure
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CAUTION
• Install the insulation not to get wider and use the
adhesives on the connection part of it to prevent
moisture from entering.
• Wind the refrigerant pipe with insulation tape if it is
exposed to outside sunlight.
• Install the refrigerant pipe respecting that the
insulation does not get thinner on the bent part or
hanger of pipe.
• Add the additional insulation if the insulation plate
gets thinner.
Refrigerant pipe insulation
a x 3
Hanger
Additional insulation
a
CAUTION
• Must fit tightly against body without any gap.
• All refrigerant connection must be accessible, in order
to permit either unit maintenance or removal.
5 Select the insulation of the refrigerant pipe.
• Insulate the gas side and liquid side pipe, noting
the insulation thickness that must differ according
to the pipe size.
• Standard: Less than an indoor temperature of
30°C (86°F), with humidity at 85%. If installing
in a high humidity environment, use one grade
thicker insulator by referring to the table below.
If installing in an unfavourable environment, use
thicker one.
• The heat-resistance temperature of the insulator
must be more than 120°C (248°F).
Pipe
Pipe size
Insulation type (heating/cooling)
Remarks
General
[30°C(86°F), 85%]
High humidity
[30°C(86°F), 85%]
EPDM, NBR
mm inch mm inch mm inch
Liquid
pipe
6.35 to 9.52 1/4 to 3/8 93/8 93/8
Heating
resisting
temperature
over
120°C(248°F)
12.7 to 50.80 1/2 to 2 13 1/2 13 1/2
Gas pipe
6.35 1/4 13 1/2 19 3/4
9.52 to 25.40 3/8 to 1 19 3/4 25 1
28.58 to 44.45 1 1/8 to 1 3/4 19 3/4 32 11/4
50.80 225 138 11/2
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14
Installation Procedure
Installation Procedure
English
• When installing insulation in the places and
conditions below, use the same insulation that is
used for high humidity conditions.
<Geological condition>
High humidity locations such as shorelines, hot
springs, lake or riversides, and ridges (when part of
the building is covered by earth and sand)
<Operation purpose condition>
Restaurant ceiling, sauna, swimming pool etc.
<Building construction condition>
Ceilings frequently exposed to moisture and cooling
are not covered. For example, pipes installed at a
corridor of a dormitory and studio or near an exit
that opens and closes frequently.
Places (where the pipes are installed) that are highly
humid due to a lack of ventilation.
Step 10 Installing the drain hose and
drain pipe
1 Push the supplied drain hose as far as possible over
the drain socket.
2 Tighten the metal clamp as shown in the picture.
3 Wrap the supplied large sealing pad over the metal
clamp and drain hose to insulate and fix it with
clamps.
4 Insulate the complete drain piping inside the building
(field supply).
If the drain hose cannot be sufficiently set on a slope,
fit the hose with drain raising piping (field supply).
5 Push the drain hose up to insulation when connecting
the drain hose to drain socket.
Metal clamp Drain socket
Drain hose
Large seailng pad Be sure to bond the drain
hose and the main pipe.
Drain pipe
Drain hose
PVC Tube Joint
+ VP25 (OD: 32 mm (1.26 in.),
ID: 25 mm (1 in.))
Drain pipe
CAUTION
Check that the indoor unit is level with the ceiling by
using the leveller.
• Install air ventilation to drain condensation smoothly.
Air ventilation
Ceiling
• If it is necessary to increase the height of the drain
pipe, install the drain pipe straight within 300 mm
(12 in.) from the drain hose port. If it is raised higher
than 550 mm (22 in.), there may be water leaks.
Band joint
300 mm
(12 in.) or less 20 mm (3/4 in.)
or more
Drain hose
Ceiling
300 to 550 mm
(12 to 22 in.)
360_AC_Indoor_IM_NA_Eng_EN.indb 14 2016-03-18 오후 3:59:04

15
Installation Procedure
English
• Do not give the hose an upward gradient beyond
the connection port. This will cause water to flow
backwards when the unit is stopped, resulting in
water leaks.
Under gradient
Ceiling
• Do not apply force to the piping on the unit side
when connecting the drain hose. The hose should not
be allowed to hang loose from its connection to the
unit. Fasten the hose to a wall, frame or other support
as close to the unit as possible.
Support pieces
1 to 1.5 m (3 ft 3 in.
to 4 ft 11 in.)
1/100 or more
Ceiling
• Install horizontally.
Indoor unit
Be horizontal
Flexible hose
• Max. allowable axis gap.
Indoor unit
Max. 20 mm (3/4 in.)
• Max. allowable bending angle.
Indoor unit
Max. 30˚
NOTE
• If a concentrated drain pipe is installed, refer to the
figure below.
100 mm (4 in.)
or more Air ventilation
Concentrated
drain pipe 1/100 or
more slope
Step 11 Performing the drainage test
1 Do a leak test at the connection part of the flexible
hose and the drain pipe:
a Connect a general hose to the connection part of
the flexible hose of the indoor unit, and pour in
some water.
Hose
Flexible hose
Water leakage
check part
b After pouring some water, reassemble the rubber
cap on the connection part of a flexible hose of
the indoor unit and firmly tighten it with a band
to prevent leakage.
c Check the leak test at the part where the adhesive
for the flexible hose and the drain pipe is used.
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16
Installation Procedure
Installation Procedure
English
CAUTION
• The leak test must be performed for at least 24 hours.
2 Check the condensed water drainage:
a Pour about 2 liters (0.54 gal) of water into the
indoor unit drain pan as shown in the picture.
b When the electric cable connection is completed
• Turn on the indoor unit and outdoor unit.
• Operate in the Cool mode.
CAUTION
• Only in the Cool mode, you can check the correct
operation of the drain pump.
When the electric cable connection has not been
completed
• Remove the control box cover of the indoor unit.
• Connect the power supply (208 to 230V, 60 Hz) to
the L and N terminals.
• Reassemble the control box cover and turn on the
indoor unit.
CAUTION
• When the float switch is not detected due to
insufficient water on the drain pan, the drain
pump will not work.
• If the power supply is directly connected to the
L and N terminals, communication error message
might appear.
• After completing the drainage check, turn the
unit off and disconnect the power supply.
• Reassemble the control box cover.
c Check whether the drain pump works correctly.
d Check whether the drainage is performing
correctly at the end of the drain pipe.
e Check for leakage at the drain pipe and drain pipe
connection part.
f When leakage occurs, check whether the indoor
unit is level and check the drain hose connection
part, drainpipe connection part and drain pump
connection.
g When the drainage check is completed and the
condensed water remains on the drain pan,
remove the water.
360_AC_Indoor_IM_NA_Eng_EN.indb 16 2016-03-18 오후 3:59:05

17
Installation Procedure
English
Bushing bracket installation
IF the condult tube is used, bracket must be installed as shown in the picture to fix the conduit tube.
Indoor unit
< 1 conduit tube > < 2 conduit tube >
Push
NOTE
• Please follow national and local electrical codes. Additional electrical connection components may be required.
360_AC_Indoor_IM_NA_Eng_EN.indb 17 2016-03-18 오후 3:59:06

18
Installation Procedure
Installation Procedure
English
Wiring work
Selecting compressed ring termial
Silver solder
F E
L
D
d1
B
d2
t
B
2
R
Norminal dimensions for cable [mm
2
(Inch
2
)] 1.5(0.002) 2.5(0.003) 4(0.006)
Norminal dimensions for screw [mm (Inch)] 4(0.15) 4(0.15) 4(0.15) 4(0.15) 4(0.15)
B
Standard dimension [mm (Inch)] 6.6
(0.25)
8.0
(0.31)
6.6
(0.25)
8.5
(0.33) 9.5(0.37)
Allowance [mm (Inch)] ±0.2(±0.007) ±0.2(±0.007) ±0.2(±0.007)
D
Standard dimendion [mm (Inch)] 3.4(0.13) 4.2(0.16) 5.6(0.22)
Allowance [mm (Inch)] +0.3(+0.011)
-0.2(-0.007)
+0.3(+0.011)
-0.2(-0.007)
+0.3(+0.011)
-0.2(-0.007)
d1
Standard dimension [mm (Inch)] 1.7(0.06) 2.3(0.09) 3.4(0.13)
Allowance [mm (Inch)] ±0.2(±0.007) ±0.2(±0.007) ±0.2(±0.007)
EMin. [mm (inch)] 4.1(3/16) 6(1/4) 6(1/4)
FMin. [mm (inch)] 6(1/4) 6(1/4) 6(1/4)
LMax. [mm (inch)] 16(5/8) 17.5(3/4) 20(3/4)
d2
Standard dimension [mm (Inch)] 4.3(0.16) 4.3(0.16) 4.3(0.16)
Allowance [mm (Inch)] +0.2(+0.007)
0(0)
+0.2(+0.007)
0(0)
+0.2(+0.007)
0(0)
tMin. [mm (Inch)] 0.7(0.02) 0.8(0.03) 0.9(0.035)
360_AC_Indoor_IM_NA_Eng_EN.indb 18 2016-03-18 오후 3:59:06

19
Installation Procedure
English
Step 12 Connecting the power and
communication cables
CAUTION
• Always remember to connect the refrigerant pipes
before performing the electric connections.
When disconnecting the system, always disconnect
the electric cables before disconnecting the
refrigerant pipes.
CAUTION
• Always remember to connect the air conditioner to
the grounding system before performing the electric
connections.
The indoor unit is powered through the outdoor unit by
means of a H07 RN-F connection cable (or a more power
model), with insulation in synthetic rubber and a jacket
in polychloroprene (neoprene), in accordance with the
requirements specified in the standard EN 60335-2-40.
1 Remove the screw on the electrical component box
and remove the cover plate.
2 Route the connection cord through the side of the
indoor unit and connect the cable to the terminals
refer to the figure below.
3 Route the other end of the cable to the outdoor unit
through the ceiling & the hole on the wall.
4 Reassemble the electrical component box cover,
carefully tightening the screw.
1 phase
L1 L2 L1 L2 F1 F2
F1 F2
L(L1) N(L2)
For connecting the power and
communication cables
Indoor power Main power cable Communication
cable
Indoor unit
Outdoor unit
Indoor power supply
Power supply Max/Min(V) Indoor power cable
208 to 230V, 60 Hz ±10% 0.0039in
2
, 3wires
Communication cable
0.0011 to 0.0023in
2
, 2 wires
AC power: M4 screw Communication: M3.5 screw
0.29 0.35
0.54
0.43
0.51
0.7
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20
Installation Procedure
Installation Procedure
English
Tightening torque (lbf.ft)
M3.5 0.59 to 0.89
M4 0.89 to 1.1
• Screws on terminal block must not be unscrewed with
the torque less than 0.89 lbf.ft.
• Since it has the external power supply, refer to the
outdoor unit installation manual for MAIN POWER.
• When installing the indoor unit in a computer room,
use the double shielded (tape aluminum / polyester
braid + copper) cable of FROHH2R type.
Step 13 Optional: Extending the
power cable
1 Prepare a compressor and the following tools.
Tools Spec Shape
Crimping pliers MH-14
Connection sleeve
[mm (inch)]
20 (0.79) x
Ø6.5 (0.26)
(H x OD)
Insulation tape Width 19 mm
(0.75 in.)
Contraction tube
[mm (inch)]
70 (2.76) x
Ø8.0 (0.31)
(L x OD)
2 As shown in the figure, peel off the shields from the
rubber or wire of the power cable.
• Peel off 20 mm (0.79 in.) of the wire shields of the
tube installed already.
CAUTION
• After peeling off the tube wire, you must insert a
contraction tube.
Power cable (provided by us)
Wire tube power cable
[Unit: mm (inch)]
[Unit: mm (inch)]
20 (0.79)
20 (0.79)
60 (2.36)
120 (4.72)
180 (7.08)
20 (0.79) 20 (0.79)
3 Insert both sides of core wire of the power cable into
the connection sleeve.
• Method 1: Push the core wire into the sleeve from
both sides.
• Method 2: Twist the wire cores together and push
it into the sleeve.
Connection sleeve Connection sleeve
Method 1 Method 2
4 Using a compressor, compress the two points and flip
it over and compress another two points in the same
location.
• The compression dimension should be 8.0.
Compression
dimension
360_AC_Indoor_IM_NA_Eng_EN.indb 20 2016-03-18 오후 3:59:07