Samsung | AC140KN4PEH/SA | Samsung 360 Cassette 27,300 Btu/h (Max. Cap), Single Split Installation Guide

Air conditioner
Installation manual
AC✴✴✴KN4✴EH
•• 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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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
Appendix34
Troubleshooting
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Safety Information
WARNING
• Hazards or unsafe practices that may result in severe
personal injury or death.
CAUTION
• 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 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.
Safety Information
• Hazards or unsafe practices that may result in minor
personal injury or property damage.
• 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.
• 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 authorised
centres or returned to the retailer so that it can be
disposed of correctly and safely.
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Safety Information
Installing the unit
WARNING
Safety Information
IMPORTANT: When installing the unit, always remember
to connect first the refrigerant tubes, then the electrical
lines.
• Always disassemble the electric lines before the
refrigerant tubes.
• 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
• 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 away from the
electric appliance.
Install the indoor unit away from lighting apparatus
using the ballast.
• If you use the wireless remote control, reception error
may occur due to the ballast of the lighting apparatus.
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.
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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.
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.
• The place where thinner or gasoline is handled. Gas may
leak and it may cause fire.
Installation Procedure
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)
Dimension gauge (1 ea)
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Installation Procedure
Indoor unit dimensions
(Unit: mm)
Category
Square panel
Circular panel
1000
358
Ceiling opening dimension
960 (950 - 960)
Front
Ceiling opening dimension
960 (950 - 960)
94
100
153
162
138
289
Refrigerant
pipe
Wire insert hole
205
Refrigerant
pipe
100
153
162
138
404
357
94
Small
385
128
181
190
233
Drain hose
connector
66
166
Installation Procedure
404
357
116
128
181
190
317
385
66
166
Drain hose
connector
Large+,
Large
1050
883
Wire insert hole
H2 → Large+, Large: 152, Small: 122
ø100
H2
646
H1
80
Common
H1 → Large+, Large: 180, Small: 150
942
646
787
Square panel
Circular panel
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Model
AC071KN4PEH
AC071KN4DEH
Chassis
Large
AC100KN4PEH
AC100KN4DEH
AC125KN4PEH
AC140KN4PEH
AC140KN4DEH
Large+
Net dimension (W × D × H)
mm
947 × 947 × 365
947 × 947 × 365
947 × 947 × 365
947 × 947 × 365
Net weight
kg
24.0
26.0
26.0
26.0
Liquid pipe connection
6.35
9.52
9.52
9.52
Gas pipe connection
15.88
15.88
15.88
15.88
Drain hose connection
Outer diameter: ø32, inner diameter: ø26.5
mm
• The circular panel is by default available in exposed
installation.
• For the recessed installation of the circular panel
• 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.)
Refrigerant
pipe
Indoor unit
display
Connection part of the
drain hose
Inspection hole
Integrated
Square panel
1 ea
Circular panel
2 ea
ø1010 to 1020
Inspection hole
Recessed installation
883
Ceiling opening diameter
ø1010 to 1020
Exposed
installation
suspended
NOTE
-
The clearance between the panel and the inspection hole
is 15 to 20 mm on a side.
Installation Procedure
• A suspended ceiling structure can substitute for the
inspection holes.
Category
1050
Inspection hole
Spacing requirements
A
'C'
A
Indoor unit
A
10 mm
2500 mm or more
A
20 mm
1500 mm or
more
Obstruction
A : 1500 mm or more
(Unit: mm)
Model
AC071KN4PEH
AC071KN4DEH
AC100KN4PEH
AC100KN4DEH
AC125KN4PEH
AC140KN4PEH
AC140KN4DEH
C
345
345
345
345
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Installation Procedure
CAUTION
NOTE
• 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.
• 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
360 cassette type
<L>
(947 x 947 x 365)
AC071KN4PEH
AC071KN4DEH
Dimensions
2610 × 215
AC100KN4PEH
AC100KN4DEH
360 cassette type
<L+>
(947 x 947 x 365)
AC125KN4PEH
2610 × 215
AC140KN4PEH
AC140KN4DEH
Installation Procedure
Step 4 Installing the indoor unit
When deciding on the location of the air conditioner the
following restrictions must be taken into account.
Step 3 Optional: Insulating the body
of the indoor unit
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.
If you install a cassette type indoor unit on the ceiling
when temperature is over 27°C and humidity is over
80%, you must apply an extra 10 mm 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.
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.
A
Insulate the end of the pipe and some curved area by
using separate insulator.
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2 Perform the following steps to install inspection holes in
accordance with the panel type.
4 Install the suspension bolts, depending on the ceiling
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)
Ceiling support
Refrigerant pipe
Indoor unit
display
Inspection hole
CAUTION
b For recessed installation of the circular panel
• If the length of the suspension bolt is more than 1.5 m,
you are required to prevent vibration.
Inspection hole
5 Screw eight pairs of nuts and washers to the suspension
bolts, making space for hanging the indoor unit.
Refrigerant pipe
CAUTION
Indoor unit display
Inspection hole
3 Insert bolt anchors, use existing ceiling supports or
construct a suitable support as shown in figure.
• 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. Cut a pad stopper and place it on the
suspension bolts to hold the washers. Remove the
stopper and screw the nuts to fix the unit.
Concrete
Hole in anchor
Hole in plug
• You must install all of the suspension rods.
Installation Procedure
• 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)
• 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.
Insert
2
Suspension bolt (M10) - field supply
1
2
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Installation Procedure
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.
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.
• Remove the pattern sheet and install the front panel.
Pipe cutter
Ceiling
Indoor unit
Gauge of dimensions For the recessed installation
of the square panel: 11.5 mm
For the recessed installation
of the circular panel: 41.5 mm
Oblique
Pipe
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.
A
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.
Pipe
Insulator
Gas side
Liquid side
NOTE
45° ±
2°
D
90° ±2°
Installation Procedure
Step 5 Purging inert gas from the
indoor unit
R 0.4 to 0.8 mm
D
L
Flare
Flare
Outer Diameter (D)
Depth (A)
Flare dimension (L)
Ø6.35 mm
1.3 mm
8.7 to 9.1 mm
Ø9.52 mm
1.8 mm
12.8 to 13.2 mm
Ø12.70 mm
2.0 mm
16.2 to 16.6 mm
Ø15.88 mm
2.2 mm
19.3 to 19.7 mm
Ø19.05 mm
2.2 mm
23.6 to 24.0 mm
• 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.
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5 Check that the flaring is correct, referring to the
illustrations below for examples of incorrect flaring.
Outer diameter (mm)
Torque (N•m)
Ø6.35
14 to18
Ø9.52
34 to 42
Ø12.70
49 to 61
Ø15.88
68 to 82
Ø19.05
100 to 120
(1 N•m=10 kgf•cm)
Correct
Inclined
Damaged
Surface
Cracked
Uneven
Thickness
NOTE
• If the pipes must be shortened, see Step 6 Cutting and
flaring the pipes on page 10.
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.
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.
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 or more) to prevent condensation even on the
insulator when if the installed area is warm and humid.
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 and
for a burst pressure of at least 20.7 MPa. Copper pipe for
hydro-sanitary applications is completely unsuitable.
1
2
Installation Procedure
• A larger one for the gas refrigerant. The inside of copper
pipe must be clean and has no dust.
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.
• 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.
Torque
wrench
Spanner
3
• 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.
3
Union
Flare nut
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Installation Procedure
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 in order to immediately detect
leaks on the refrigerant fittings.
Made vacuum for 15 minutes and pressurizing system
with nitrogen.
Insulator
Gas side
Liquid side
CAUTION
• Be sure to wrap insulation tightly without any gaps.
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.
CAUTION
• Make sure that all refrigerant connection must be
accessible for easy maintenance and detachment.
• 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.
Installation Procedure
• Install the refrigerant pipe respecting that the insulation
does not get thinner on the bent part or hanger of pipe.
Step 9 Insulating the refrigerant pipes
• Add the additional insulation if the insulation plate gets
thinner.
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.
Hanger
Additional insulation
No gap
a
Refrigerant pipe insulation
ax3
5 Select the insulation of the refrigerant pipe.
NBR
• Insulate the gas side and liquid side pipe, noting the
insulation thickness that must differ according to the
pipe size.
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.
Insulation cover pipe
Insulation pipe
• Standard: Less than an indoor temperature of 30°C,
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.
Indoor unit
Be sure to overlap
the insulation.
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Insulation type (heating/cooling)
Pipe
Pipe size
Standard
High humidity
(Less than 30°C, 85%)
(Over 30°C, 85%)
Remarks
EPDM, NBR
Liquid
pipe
Ø6.35 to Ø9.52
9t
9t
Ø12.7 to Ø19.05
13t
13t
Ø6.35
13t
19t
The internal
temperature is
higher than 120°C.
Ø9.52
Gas pipe
Ø12.70
19t
25t
Ø15.88
Ø19.05
• When installing insulation in the places and
conditions below, use the same insulation that is used
for high humidity conditions.
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>
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
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.
Drain pipe
Large seailng pad
Places (where the pipes are installed) that are highly
humid due to a lack of ventilation.
Drain hose
Step 10 Installing the drain hose and
drain pipe
Installation Procedure
<Geological condition>
3 Wrap the supplied large sealing pad over the metal
clamp and drain hose to insulate and fix it with clamps.
Be sure to bond the drain
hose and the main pipe.
PVC Tube Joint
+ VP25 (OD: 32 mm, ID: 25 mm)
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.
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Installation Procedure
• Install horizontally.
CAUTION
Check that the indoor unit is level with the ceiling by
using the leveller.
Be horizontal
• Install air ventilation to drain condensation smoothly.
Air ventilation
Indoor unit
Flexible hose
• Max. allowable axis gap.
Ceiling
300 mm
or less
20 mm or more
Installation Procedure
Band joint
Drain hose
550 mm or less
• If it is necessary to increase the height of the drain pipe,
install the drain pipe straight within 300 mm from the
drain hose port. If it is raised higher than 550 mm, there
may be water leaks.
Indoor unit
Max. 20 mm
• Max. allowable bending angle.
Ceiling
• 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.
Indoor unit
Under gradient
Max. 30˚
NOTE
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.
• If a concentrated drain pipe is installed, refer to the
figure below.
Full thread bolt hanger
Individual
air vent
Main air vent
(must be installed)
200 mm
or more
300 to
550 mm
Support pieces
1 to 1.5 m
Main drain pipe
1/100 or more
1000 to 1500 mm
Centralized horizontal drain
pipe
(more than 1/100 slope)
Ceiling
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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.
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 (220V, 50 Hz) to the L and
N terminals.
Water leakage
check part
• Reassemble the control box cover and turn on the
indoor unit.
Flexible hose
Hose
c Check the leak test at the part where the adhesive
for the flexible hose and the drain pipe is used.
• 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.
CAUTION
• The leak test must be performed for at least 24 hours.
2 Check the condensed water drainage:
a Pour about 2 liters of water into the indoor unit
drain pan as shown in the picture.
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.
Installation Procedure
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.
CAUTION
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.
b When the electric cable connection is completed
• Turn on the indoor unit and outdoor unit.
• Operate in the Cool mode.
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.
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Installation Procedure
CAUTION
Indoor power supply
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.
Power supply
Max/Min(V)
Indoor power cable
220 to 240V, 50 Hz
±10%
0.75 to 1.5 mm², 3 wires
Communication cable
0.75 to 1.5 mm², 2 wires
Communication: M3.5 screw
AC power: M4 screw
7.5
13
11
18
2 Route the connection cord through the side of the indoor
unit and connect the cable to the terminals refer to the
figure below.
9.0
13.8
• Always remember to connect the air conditioner to
the grounding system before performing the electric
connections. Use a crimp ring terminal at the end of each
wire.
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.
Installation Procedure
Example) 1 phase model
Tightening torque (kgf • cm)
M3.5
8.0 to 12.0
M4
12.0 to 18.0
• 1 N·m = 10 kgf·cm
Wire insert
hole
For connecting the power and
communication cables
• Power supply cords of parts of appliances for outdoor
use shall not be lighter than polychloroprene sheathed
flexible cord. (Code designation IEC:60245 IEC 57 /
CENELEC: H05RN-F or IEC:60245 IEC 66 / CENELEC:
H07RN-F)
L
• Since it has the external power supply, refer to the
outdoor unit installation manual for MAIN POWER.
F1 F2
N
Indoor unit
Outdoor unit
1(L)
2(N)
L
N
F1
F2
CAUTION
Indoor power
Main power cable
Communication
cable
• When installing the indoor unit in a computer room or
a server room, use the double shielded communication
cable (tape aluminum / polyester braid + copper) of
FROHH2R type.
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Step 13 Optional: Extending the
power cable
Method 1
Method 2
1 Prepare a crimping tool and the following tools.
Tools
Spec
Shape
Crimping pliers
MH-14
Connection sleeve
(mm)
20xØ6.5
(HxOD)
Insulation tape
Width 19
mm
Contraction tube
(mm)
70xØ8.0
(LxOD)
Connection sleeve
Connection sleeve
4 Using a crimping tool, 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
2 As shown in the figure, peel off the shields from the
rubber and wire of the power cable.
• Peel off 20 mm of the wire shields of the tube.
Method 1
• For information about the power cable specifications
for indoor and outdoor units, refer to the installation
manual.
Method 2
Compress it 4 times.
Compress it 4 times.
5 mm
5 mm
• After peeling off the tube wire, you must insert a
contraction tube.
5 Wrap it with the insulation tape twice or more and
position your contraction tube in the middle of the
insulation tape.
A total of three or more layers of insulation is required.
Power cable
20
20
20
60
120
180
Installation Procedure
CAUTION
• After compressing it, pull both sides of the wire to
make sure it is firmly pressed.
(Unit: mm)
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.
Method 1
Method 2
Insulation tape
Insulation tape
40 mm
35 mm
6 Apply heat to the contraction tube to contract it.
Contraction tube
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Installation Procedure
7 After tube contraction work is completed, wrap it with
the insulation tape to finish.
Common steps for setting the addresses and options
AR-KH00E remote control (for 360 cassette only)
CAUTION
• Make sure that the connection parts are not exposed to
outside.
• Be sure to use insulation tape and a contraction tube
made of approved reinforced insulating materials that
have the same level of withstand voltage with the power
cable. (Comply with the local regulations on extensions.)
Entering the
mode for setting
the options
Setting the
option values
Mode button
Wheel
Insulation tape
Temperature
button
WARNING
• In case of extending the electric wire, please DO NOT use
a round-shaped Pressing socket.
Installation Procedure
–– Incomplete wire connections can cause electric shock
or a fire.
Timer button
NOTE
• The remote control display may vary depending on the
model.
1 Enter the mode for setting the options:
a Remove the batteries from the remote control.
(Temp) and
b While holding down the
(Timer) buttons simultaneously, insert the
batteries into the remote control.
Step 14 Setting the indoor unit
addresses and the installation options
c Make sure that you are entered to the mode for
setting the options:
If the indoor unit requires a high level controller, you must
set the indoor unit address. But you must always set the
installation options, and set them by using the remote control.
You cannot set both of the indoor unit address and the
installation options in a batch: set both of them respectively.
2 Set the option values.
CAUTION
• The total number of available options are 24: SEG1 to SEG24.
• Because SEG1, SEG7, SEG13, and SEG19 are the page options
used by the previous remote control models, the modes to
set values for these options are skipped automatically.
• Set a 2-digit value for each option pair in the following
order: SEG2 and SEG3 → SEG4 and SEG5 → SEG6 and
SEG8 → SEG9 and SEG10 → SEG11 and SEG12 → SEG14
and SEG15 → SEG16 and SEG17 → SEG18 and SEG20 →
SEG21 and SEG22 → SEG23 and SEG24
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SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
0
X
X
X
X
X
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
1
X
X
X
X
X
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
2
X
X
X
X
X
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
3
X
X
X
X
X
On (SEG1 to SEG12)
Off (SEG13 to SEG24)
Take the steps presented in the following table:
Steps
Remote control display
1 Set the SEG2 and SEG3 values:
Installation Procedure
a Set the SEG2 value by rotating the Wheel
counterclockwise until the value you want to set
appears on the remote control display.
SEG2
b Set the SEG3 value by rotating the Wheel clockwise
until the value you want to set appears on the remote
control display.
SEG3
When you rotate the Wheel, values appear in the following order:
2 Press the
(Mode) button. Cool and On appear on the remote control display.
3 Set the SEG4 and SEG5 values:
a Set the SEG4 value by rotating the Wheel
counterclockwise until the value you want to set
appears on the remote control display.
SEG4
b Set the SEG5 value by rotating the Wheel clockwise
until the value you want to set appears on the remote
control display.
SEG5
When you rotate the Wheel, values appear in the following order:
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Installation Procedure
Steps
4 Press the
Remote control display
(Mode) button. Dry and On appear on the remote control display.
5 Set the SEG6 and SEG8 values:
a Set the SEG6 value by rotating the Wheel
counterclockwise until the value you want to set
appears on the remote control display.
SEG6
b Set the SEG8 value by rotating the Wheel clockwise
until the value you want to set appears on the remote
control display.
SEG8
When you rotate the Wheel, values appear in the following order:
Installation Procedure
6 Press the
(Mode) button. Fan and On appear on the remote control display.
7 Set the SEG9 and SEG10 values:
a Set the SEG9 value by rotating the Wheel
counterclockwise until the value you want to set
appears on the remote control display.
SEG9
b Set the SEG10 value by rotating the Wheel clockwise
until the value you want to set appears on the remote
control display.
SEG10
When you rotate the Wheel, values appear in the following order:
8 Press the
(Mode) button. Heat and On appear on the remote control display.
9 Set the SEG11 and SEG12 values:
a Set the SEG11 value by rotating the Wheel
counterclockwise until the value you want to set
appears on the remote control display.
SEG11
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Steps
Remote control display
b Set the SEG12 value by rotating the Wheel clockwise
until the value you want to set appears on the remote
control display.
SEG12
When you rotate the Wheel, values appear in the following order:
10Press the
(Mode) button. Auto and Off appear on the remote control display.
11Set the SEG14 and SEG15 values:
a Set the SEG14 value by rotating the Wheel
counterclockwise until the value you want to set
appears on the remote control display.
SEG14
Installation Procedure
b Set the SEG15 value by rotating the Wheel clockwise
until the value you want to set appears on the remote
control display.
SEG15
When you rotate the Wheel, values appear in the following order:
12Press the
(Mode) button. Cool and Off appear on the remote control display.
13Set the SEG16 and SEG17 values:
a Set the SEG16 value by rotating the Wheel
counterclockwise until the value you want to set
appears on the remote control display.
SEG16
b Set the SEG17 value by rotating the Wheel clockwise
until the value you want to set appears on the remote
control display.
SEG17
When you rotate the Wheel, values appear in the following order:
14Press the
(Mode) button. Dry and Off appear on the remote control display.
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Installation Procedure
Steps
Remote control display
15Set the SEG18 and SEG20 values:
a Set the SEG18 value by rotating the Wheel
counterclockwise until the value you want to set
appears on the remote control display.
SEG18
b Set the SEG20 value by rotating the Wheel clockwise
until the value you want to set appears on the remote
control display.
SEG20
When you rotate the Wheel, values appear in the following order:
16Press the
(Mode) button. Fan and Off appear on the remote control display.
Installation Procedure
17Set the SEG21 and SEG22 values:
a Set the SEG21 value by rotating the Wheel
counterclockwise until the value you want to set
appears on the remote control display.
SEG21
b Set the SEG22 value by rotating the Wheel clockwise
until the value you want to set appears on the remote
control display.
SEG22
When you rotate the Wheel, values appear in the following order:
18Press the
(Mode) button. Heat and Off appear on the remote control display.
19Set the SEG23 and SEG24 values:
a Set the SEG23 value by rotating the Wheel
counterclockwise until the value you want to set
appears on the remote control display.
SEG23
b Set the SEG24 value by rotating the Wheel clockwise
until the value you want to set appears on the remote
control display.
SEG24
When you rotate the Wheel, values appear in the following order:
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3 Check whether the option values that you have set are
correct by pressing the
(Mode) button repeatedly
[SEG2, SEG3]
[SEG4, SEG5]
[SEG6, SEG8]
[SEG9, SEG10]
NOTE
• The remote control display and buttons may vary
depending on the model.
1 Enter the mode for setting the options:
[SEG11, SEG12]
[SEG14, SEG15]
[SEG21, SEG22]
[SEG23, SEG24]
[SEG16, SEG17]
[SEG18, SEG20]
(High Temp) and
b While holding down the
(Low Temp) buttons simultaneously, insert the
batteries into the remote control.
4 Save the option values into the indoor unit:
5 Check whether the air conditioner operates in
accordance with the option values you have set:
a Reset the indoor or outdoor unit.
• Indoor unit : Press the
(Set) and
(Option)
buttons on the remote control simultaneously for 4
seconds.
• Outdoor unit : Press the K3 button.
b Remove the batteries from the remote control,
insert them again, and then press the
(Power)
button on the remote control.
MR-EC00 and MR-EH00 remote controls
c Make sure that you are entered to the mode for
setting the options:
2 Set the option values.
CAUTION
• The total number of available options are 24: SEG1 to
SEG24.
• Because SEG1, SEG7, SEG13, and SEG19 are the page
options used by the previous remote control models,
the modes to set values for these options are skipped
automatically.
Installation Procedure
Point the remote control to the remote control sensor on
the indoor unit and then press the
(Power) button on
the remote control twice. Make sure that this command
is received by the indoor unit. When it is successfully
received, you can hear a short sound from the indoor
unit. If the command is not received, press the
(Power) button again.
Entering the
mode for setting
the options
a Remove the batteries from the remote control,
and then insert them again.
• Set a 2-digit value for each option pair in the following
order: SEG2 and SEG3 → SEG4 and SEG5 → SEG6 and
SEG8 → SEG9 and SEG10 → SEG11 and SEG12 → SEG14
and SEG15 → SEG16 and SEG17 → SEG18 and SEG20 →
SEG21 and SEG22 → SEG23 and SEG24
Setting the
option values
Mode button
High Temp button
High Fan button
Low Temp button
Low Fan button
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Installation Procedure
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
0
X
X
X
X
X
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
1
X
X
X
X
X
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
2
X
X
X
X
X
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
3
X
X
X
X
X
On (SEG1 to SEG12)
Off (SEG13 to SEG24)
Take the steps presented in the following table:
Steps
Remote control display
1 Set the SEG2 and SEG3 values:
Installation Procedure
a Set the SEG2 value by pressing the
(Low Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG2
b Set the SEG3 value by pressing the
(High Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG3
When you press the
following order:
2 Press the
(Low Fan) or
(High Fan) button, values appear in the
(Mode) button. Cool and On appear on the remote control display.
3 Set the SEG4 and SEG5 values:
a Set the SEG4 value by pressing the
(Low Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG4
b Set the SEG5 value by pressing the
(High Fan) button repeatedly until the
value you want to set appears on the remote control display.
When you press the
following order:
(Low Fan) or
(High Fan) button, values appear in the
SEG5
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Steps
4 Press the
Remote control display
(Mode) button. Dry and On appear on the remote control display.
5 Set the SEG6 and SEG8 values:
a Set the SEG6 value by pressing the
(Low Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG6
b Set the SEG8 value by pressing the
(High Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG8
When you press the
following order:
(High Fan) button, values appear in the
Installation Procedure
6 Press the
(Low Fan) or
(Mode) button. Fan and On appear on the remote control display.
7 Set the SEG9 and SEG10 values:
a Set the SEG9 value by pressing the
(Low Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG9
b Set the SEG10 value by pressing the
(High Fan) button repeatedly until the
value you want to set appears on the remote control display.
When you press the
following order:
8 Press the
(Low Fan) or
(High Fan) button, values appear in the
SEG10
(Mode) button. Heat and On appear on the remote control display.
9 Set the SEG11 and SEG12 values:
a Set the SEG11 value by pressing the
(Low Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG11
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Installation Procedure
Steps
Remote control display
b Set the SEG12 value by pressing the
(High Fan) button repeatedly until the
value you want to set appears on the remote control display.
When you press the
following order:
10Press the
(Low Fan) or
(High Fan) button, values appear in the
SEG12
(Mode) button. Auto and Off appear on the remote control display.
11Set the SEG14 and SEG15 values:
a Set the SEG14 value by pressing the
(Low Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG14
Installation Procedure
b Set the SEG15 value by pressing the
(High Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG15
When you press the
following order:
12Press the
(Low Fan) or
(High Fan) button, values appear in the
(Mode) button. Cool and Off appear on the remote control display.
13Set the SEG16 and SEG17 values:
a Set the SEG16 value by pressing the
(Low Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG16
b Set the SEG17 value by pressing the
(High Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG17
When you press the
following order:
(Low Fan) or
(High Fan) button, values appear in the
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Steps
14Press the
Remote control display
(Mode) button. Dry and Off appear on the remote control display.
15Set the SEG18 and SEG20 values:
a Set the SEG18 value by pressing the
(Low Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG18
b Set the SEG20 value by pressing the
(High Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG20
When you press the
following order:
(High Fan) button, values appear in the
Installation Procedure
16Press the
(Low Fan) or
(Mode) button. Fan and Off appear on the remote control display.
17Set the SEG21 and SEG22 values:
a Set the SEG21 value by pressing the
(Low Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG21
b Set the SEG22 value by pressing the
(High Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG22
When you press the
following order:
18Press the
(Low Fan) or
(High Fan) button, values appear in the
(Mode) button. Heat and Off appear on the remote control display.
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Installation Procedure
Steps
Remote control display
19Set the SEG23 and SEG24 values:
a Set the SEG23 value by pressing the
(Low Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG23
b Set the SEG24 value by pressing the
(High Fan) button repeatedly until the
value you want to set appears on the remote control display.
SEG24
When you press the
following order:
(Low Fan) or
(High Fan) button, values appear in the
[SEG2, SEG3]
[SEG4, SEG5]
[SEG6, SEG8]
b Remove the batteries from the remote control,
insert them again, and then press the
(Power)
button on the remote control.
[SEG9, SEG10]
Setting the indoor unit addresses
[SEG11, SEG12]
[SEG14, SEG15]
[SEG21, SEG22]
[SEG23, SEG24]
[SEG16, SEG17]
[SEG18, SEG20]
4 Save the option values into the indoor unit:
1 Make sure that the power is supplied to the indoor unit.
If the indoor unit is not plugged in, it must include a
power supply.
N
5 Check whether the air conditioner operates in
accordance with the option values you have set:
Before installing an indoor unit, be sure to set an address
for the indoor unit by taking the following steps:
L
Point the remote control to the remote control sensor on
the indoor unit and then press the
(Power) button on
the remote control twice. Make sure that this command
is received by the indoor unit. When it is successfully
received, you can hear a short sound from the indoor
unit. If the command is not received, press the
(Power) button again.
Option No. for an indoor unit address:
0AXXXX-1XXXXX-2XXXXX-3XXXXX
Indoor unit
F1 F2
Installation Procedure
3 Check whether the option values that you have set are
correct by pressing the
(Mode) button repeatedly
a Reset the indoor or outdoor unit.
• Indoor unit : Press the
(Set) and
(Low Fan)
buttons on the remote control simultaneously for 4
seconds.
• Outdoor unit : Press the K3 button.
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2 Set an address for each indoor unit using the remote control, according to your air conditioning system plan, by referring
to the following table and by following the steps in Common steps for setting the addresses and options on page 18.
• The indoor unit addresses (main and RMC addresses) are set to 0A0000-100000-200000-300000 by default.
• If indoor units and outdoor units match 1:1, you don’t need to set the main address because it is automatically set by
the outdoor unit.
• If you are using on or off controller, set RMC address.
Option
SEG1
SEG2
SEG3
Function
Page
Mode
Setting main
address
Indication
Indication
and
details
Details
0
Indication
Details
0
No main
address
1
Main
address
setting
mode
Function
Page
SEG8
SEG9
Reserved
Indication
Details
0
No RMC
address
1
RMC
address
setting
mode
1
SEG6
Indoor unit
number
Indoor unit
number
Indication
Details
Indication
Details
0 to 1
Tens
digit
0 to 9
Units
digit
Reserved
SEG10
Setting RMC
address
Details
SEG5
SEG11
SEG12
Group channel
(x16)
Group address
Indication
Details
Indication
Details
RMC1
0 to 2
RMC2
0 to F
Reserved
Installation Procedure
SEG7
Indication
and
details
Details
A
Option
Indication
Indication
SEG4
CAUTION
• The main address must be set to a value in the range 0 to 14. If you set other values, communication error will occur.
• If any of SEG5 and SEG6 is set to a value in the range A to F, the main address of the indoor unit does not change.
• If SEG3 is set to 0, the indoor unit maintains the existing main address even if SEG6 is set to a new value.
• If SEG9 is set 0, the indoor unit maintains the existing RMC address even if SEG11 and SET12 are set to new values.
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Installation Procedure
2 Set the installation options of indoor units, by referring
to the following table and by following the steps in
Common steps for setting the addresses and options on
page 18.
Setting the installation options in a batch
Option No. for an indoor unit address:
02XXXX-1XXXXX-2XXXXX-3XXXXX
1 Make sure that the power is supplied to the indoor unit.
If the indoor unit is not plugged in, it must include a
power supply.
• The installation options of indoor units are set to
020000-100000-200000-300000 by default.
• The SEG20 option, Individual control with remote
control, allows you to control multiple indoor units
individually by using the remote control.
L
F1 F2
N
Indoor unit
Installation Procedure
Option
SEG1
SEG2
Function
Page
Mode
Indication
Details
Indication
SEG3
Details
SEG4
SEG5
SEG6
Use of external
temperature
sensor
Use of central
control
Compensation of
the fan RPM
Indication
0
Details
Disuse
Indication
0
Details
0
Option
SEG7
SEG8
Function
Page
Use of drain
pump
Indication
and
details
0
Disuse
(recessed
installation)
1
High-ceiling
mode
(recessed
installation)
4
Disuse
(exposed
installation)
5
High-ceiling
mode
(exposed
installation)
2
1
Indication
Details
Disuse
Reserved
Indication
and
details
Indication
Details
Indication
Details
0
Disuse
1
Use
2
Use with
3 minute
delay
1
Use
1
Use
SEG9
SEG10
SEG11
SEG12
Reserved
Reserved
Reserved
Reserved
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Option
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
Function
Page
Use of external
control
Setting the
output of
external control
S-Plasma ion
Buzzer control
Maximum filter
usage time
Indication
Indication
and
details
Details
Indication
Details
Indication
Details
Indication
Details
Indication
Details
Indication
Details
0
Disuse
0
Thermo
on
0
Disuse
0
Use of
buzzer
2
1000
hours
1
On/Off
control
2
Off
control
1
Operation
on
1
Use
1
Disuse of
buzzer
6
2000
hours
3
Window
on/off
control
2
SEG19
SEG20
SEG21
Function
Page
Individual
control with
remote control
Heating setting
compensation
Indication
Indication
and
details
Details
3
SEG22
SEG23
SEG24
Cycle time of
Swing
Indication
Details
Indication
Details
Indication
Details
0 or 1
Indoor 1
0
Default
0
34
seconds
(default)
2
Indoor 2
1
2°C
1
30
seconds
3
Indoor 3
2
5°C
2
4
Indoor 4
38
seconds
Reserved
Reserved
Installation Procedure
Option
• Even if you set the Use of drain pump (SEG8) option to 0, it is automatically set to 2 (the drain pump is used with 3
minute delay).
• If you set the Maximum filter usage time (SEG18) option to a value other than 2 and 6, it is automatically set to 2 (1000
hours).
• If you set the Individual control with remote control (SEG20) option to a value other than 0 to 4, it is automatically set to
0 (Indoor 1).
• Default value of Heating setting compensation (SEG21) is 5°C for 360 cassette model.
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Installation Procedure
Changing the addresses and options individually
When you want to change the value of a specific option, refer to the following table and follow the steps in Common
steps for setting the addresses and options on page 18.
Option
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
Function
Page
Mode
Option mode to
change
Tens position
of the option
number
Units position
of the option
number
New value
Indication
Indication
and
details
Details
0
Indication
Details
D
Indication
Details
Indication
Details
Indication
Details
Indication
Details
Option
type
0 to F
Tens
position
value
0 to 9
Units
position
value
0 to 9
New
value
0 to F
Example: Changing the Buzzer control (SEG17) option of the installation options to 1 disuse.
Installation Procedure
Option
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
Function
Page
Mode
Option mode to
change
Tens position
of the option
number
Units position
of the option
number
New value
Indication
0
D
2
1
7
1
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For the installation of the circular
panel
4 Rotate the paper compass diametrically to draw a circle
on the ceiling.
Making a circular opening on the ceiling
Use a paper compass printed on the indoor unit package.
(attached inside to the upper part)
1 Use a bolt or a pin to fix pivot point of the paper
compass on center of the ceiling. (in the middle of
location for installation)
For the painting of the panel
• Make sure to only apply paints and varnishes for resins
(ABS, HIPS) or paint thinners.
• If you apply lacquers for general use on the panel, it
may lead to discoloration or erosion on the surface of
the panel.
Installation Procedure
2 Put a pencil at the opposite side of the pivot point fixed
in place.
3 Rotate the paper compass on its pivot point to draw a
line on the ceiling.
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Troubleshooting
Indoor unit display indications
Condition
Ice blue
Yellow green
Blue
Red
Power reset (blinking once every 2 seconds)
X
X
X
In the defrost operation (blinking once every 10 seconds)
X
X
X
X
Open or short circuit error of the indoor-temperature sensor
X
X
Error of the outdoor unit
X
X
Communication error between the indoor and outdoor units
X
X
Open or short circuit error of a sensor (evaporator-in,
evaporator-out, or discharge sensor) in the indoor unit
X
X
Error of the fan in the indoor unit
X
Error of the second detection of the float switch
X
Open circuit error of the thermal fuse
EEPROM error
: On,
X
X
X
X
X
X
X
: Blinking, X : Off
Appendix
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Memo
Appendix
English 35
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DB68-05982A-02
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