Samsung AJ CXS CH Series User manual

Air conditioner
Installation manual
AJ***CXS*CH / AJ***BXJ*CH
• 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
IMPORTANT – This product has been designed and manufactured to meet ENERGY STAR criteria for energy efficiency
when matched with appropriate coil components.
However, proper refrigerant charge and proper air flow are critical to achieve rated capacity and efficiency.
Installation of this product should follow the manufacturer’s refrigerant charging and air flow instructions.
Failure to confirm proper charge and airflow may reduce energy efficiency and shorten equipment life.
Safety Information 3
General information 3
Installing the unit 4
Power supply line, fuse or circuit breaker 4
Installation Procedure 5
Step 1 Choosing the installation location 5
Step 2 Checking and preparing accessories and tools 7
Step 3 Fixing the outdoor unit in place 8
Step 4 Connecting the power cables, communication cable, and controllers 8
Step 5 Connecting the refrigerant pipe 15
Step 6 Optional: Cutting and flaring the pipes 17
Step 7 Connecting refrigerant pipes and vacuuming 18
Step 8 Performing the gas leak test 20
Step 9 Adding refrigerant (R-410A) 20
Step 10 Connecting the drain hose to the outdoor unit 21
Step 11 Checking the earthing 21
Step 12 Setting an indoor unit address and installation option 22
Step 13 Cool and Heat modes operation test 31
Step 14 Optional: Setting to Cool or Heat only mode 31
Extra procedures 32
Pumping down refrigerant 32
Relocating the indoor and outdoor units 32
Using the stop valve 32
Appendix 34
Troubleshooting 34
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English
Safety Information
California Proposition 65 Warning (US)
WARNING:
Cancer and Reproductive Harm -
www.P65Warnings.ca.gov.
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 forwhich 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 centers or returned to the retailer so that it
can be disposed of correctly and safely.
• Wear protective equipment (such as safety gloves,
goggles, and headgear) during installation and
maintenance works. Installation/repair technicians
may be injured if protective equipment is not properly
equipped.
Safety Information
Safety Information
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Safety Information
English
Safety Information
• 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
fortheir safety. Children should be supervised to ensure
that they do not play with the appliance.
Installing the unit
WARNING
IMPORTANT: When installing the unit, always remember to
connect first the refrigerant tubes, then the electrical lines.
• Connecting one indoor unit to this product is prohibited.
• 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.
• Make sure that the condensed water runs well out of
the unit at low ambient temperature. Drain pipe and
cond heater can frost/ice can not grow. If drain work is
not effective for releasing condensed water, it can make
the units get damaged by massive ice and system can
be stop, covered by ice. (ForAJ***CXS*CH models)
• Do not disassemble and alter the heater at your own
discretion. (For AJ***CXS*CH models)
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 earthing 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.
• Be sure not to perform power cable modification,
extension wiring, and multiple wire connection.
‐It may cause electric shock or fire due to poor
connection, poor insulation, or current limit override.
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English
Installation Procedure
Installation Procedure
Step1 Choosing the installation location
Installation location requirements
• Do not place the outdoor unit on its side or upside
down. Failing to do so may cause the compressor
lubrication oil to run into the cooling circuit and lead
to serious damage to the unit.
• Install the unit in a well-ventilated location away from
direct sunlight or strong winds.
• Install the unit in a location that would not obstruct
any passageways or thoroughfares.
• Install the unit in a location that would not inconvenience
or disturb your neighbors, as they could be affected by
the noise or the airflow coming from the unit.
• Install the unit in a location where the pipes and the
cables can be easily connected to the indoor unit.
• Install the unit on a flat, stable surface that can
withstand the weight of the unit. Otherwise, the unit
can generate noise and vibration during operation.
• Install the unit so that the air flow is directed towards
the open area.
• Maintain sufficient clearance around the outdoor unit,
especially from a radio, computer, stereo system, etc.
Air Guide Duct (This product is not provided by Samsung)
7.87 inch(200 mm)
Outdoor Unit
11.81 inch (300 mm)
4.92 ft (1.5 m) or more
4.92 ft (1.5 m) or more
3.28 ft (1 m) or more 3.28 ft (1 m) or more
Fuse
Control
Stereo Computer etc
Indoor Unit
• Install the unit at a height where its base can be firmly
fixed in place.
• Make sure that the water dripping from the drain hose
runs away correctly and safely.
CAUTION
• You have just purchased a system air conditioner and
it has been installed by your installation specialist.
• This device must be installed according to the
national electrical rules.
• If your outdoor unit exceeds a net weight of 132.2 lb (60 kg),
do not install it on a suspended wall, but stand it on a floor.
• The reliability of our product cannot be guaranteed
under conditions of -13 ℉ (-25 ℃) or less.
• When installing the outdoor unit at the seaside, make
sure that it is not directly exposed to sea breeze. If you
cannot find an adequate place free from direct sea
breeze, construct a protection wall or a protective fence.
‐Install the outdoor unit in a place (such as near
buildings etc.) where it can be prevented from sea
breeze. Failure to do so may cause a damage to the
outdoor unit.
Sea breeze Sea breeze
Outdoor Unit Outdoor Unit
Sea Sea
• If you cannot avoid installing the outdoor unit at the
seaside, construct a protection wall around to block
the sea breeze.
• Construct a protection wall with a solid material such
as concrete to block the sea breeze. Make sure that the
height and the width of the wall are 1.5 times larger
than the size of the outdoor unit. Also, secure a space
larger than 27.6 inch (700 mm) between the protection
wall and the outdoor unit for exhausted air to ventilate.
Outdoor Unit
Protection wall
Sea breeze
Sea
CAUTION
• Depending on the condition of the power supply,
unstable power or voltage may cause malfunction of
parts or control system (example: on a boat or places
using power supplied from electric generator, etc.).
Installation Procedure
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Installation Procedure
English
Installation Procedure
• Install the unit in a place where water can drain smoothly.
• If you have any difficulty finding installation location as
prescribed above, contact your manufacturer for details.
• Consider that the salinity particles clinging to the
external panels should be sufficiently washed out. Be
sure to clean sea water and dust from the outdoor unit
heat exchanger and apply a corrosion inhibitor on it at
least once a year.
• Because the residual water at the bottom of the
outdoor unit significantly promotes corrosion, make
sure that the slope does not disturb drainage.
‐Keep the floor level so that rain does not accumulate.
‐Be careful not to block the drain hole due to foreign
substance.
• Check the condition of the product periodically.
‐Check the installation site every 3 months and
perform anti-corrosion treatment such as R-Pro
supplied by SAMSUNG (Code : MOK-220SA) or
commercial water repellent grease and wax, etc.,
based on the product condition.
‐When the product is to be shut down for a long
period of time, such as off-peak hours, take
appropriate measures like covering the product.
• If the product installed within 1640.4 ft (500 m) of
seashore, special anti-corrosion treatment is required.
※Please contact your local SAMSUNG
representative for further details.
CAUTION
• In areas with heavy snow fall, piled snow could block
the air intake. To avoid this incident, install a frame
that is higher than estimated snow fall. In addition,
install a snow-proof hood to avoid snow from piling on
the outdoor unit.
Frame
Ground
Estimated
snow fall
Snow-proof hood
Minimum clearances forthe outdoor unit
When installing 1 outdoor unit
Unit: inch (mm)
11.81 (300) or more
59.06 (1500) or more
11.81 (300)
or more
23.62 (600)
or more
11.81 (300)
or more
78.74 (2000)
or more
59.06 (1500)
or more
23.62 (600)
or more
11.81 (300)
or more
59.06
(1500) or
more
11.81
(300) or
more
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English
Installation Procedure
When installing more than1 outdoor unit
Unit: inch (mm)
59.06 (1500)
or more
23.62 (600)
or more 118.11 (3000)
or more
118.11 (3000)
or more
11.81 (300)
or more
23.62 (600)
or more 23.62 (600)
or more
59.06 (1500)
or more 11.81 (300)
or more
23.62 (600)
or more 23.62 (600)
or more
59.06 (1500)
or more
23.62 (600)
or more 23.62 (600) or more 23.62 (600) or more
11.81
(300) or more
11.81 (300)
or more
11.81 (300) or more
11.81 (300) or more
19.69 (500) or more 19.69 (500) or more
CAUTION
• The outdoor 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 outdoor unit must be reachable and
removable under safe conditions for people and the unit.
Step 2 Checking and preparing
accessories and tools
3-wire
Power Cable (option)
2-wire
Assembly Cable (option)
Drain Plug Energy Label
Federallawprohibitsremoval of this label before consumerpurchase.U.S.Government
HeatPump
Coolingand Heating
SplitSystem
SamsungElectronicsCo., Ltd.
ModelAJ036JCJ5CH
HeatingCapacity40,000 Btu/h
CoolingCapacity36,000 Btu/h
13.5
MostEfficient
RangeofSimilarModels
*HeatingSeasonalPerformanceFactor
LeastEfficient
8.2
9.0-9.5
Heating
EfficiencyRating (HSPF)*
30.5
MostEfficient
RangeofSimilarModels
*SeasonalEnergyEfficiency Ratio
LeastEfficient
14.0
16.5-18.5
Cooling
EfficiencyRating (SEER)*
Forenergy cost info, visit
productinfo.energy.gov
This system’s
efficiencyratings depend
onthe coil yourcontractor
installswith this unit. The
heatingefficiency rating
variesslightly in different
geographicregions. Ask
yourcontractorfordetails.
Rubber Leg Installation Manual
Flare Nuts, 5/8 inch (15.88 mm)
outer pipe diameter
(AJ030CXS4CH, AJ036CXS4CH,
AJ036BXJ4CH, AJ048BXJ5CH)
Flare Nuts, 3/8 inch (9.52 mm)
outer pipe diameter
(AJ024CSX4CH, AJ030CXS4CH,
AJ036CXS4CH, AJ036BXJ4CH,
AJ048BXJ5CH)
Tube connector
[Pipe 1/2 inch (12.7 mm);
Bolt 3/8 inch (9.52 mm)]
(AJ024CSX4CH, AJ030CXS4CH,
AJ036CXS4CH, AJ036BXJ4CH,
AJ048BXJ5CH)
Tube connector
[Pipe 1/2 inch (12.7 mm);
Bolt 5/8 inch (15.88 mm)]
(AJ030CXS4CH, AJ036CXS4CH,
AJ036BXJ4CH, AJ048BXJ5CH)
Drain Cap
NOTE
• Wire assembly cables are optional. If they are not
supplied, use standard cables.
• The drain plug and the rubber legs are included onlywhen
the air conditioner is supplied without assembly pipes.
• If these accessories are supplied, they are in the
accessory package or outdoor unit package.
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Installation Procedure
English
Installation Procedure
Step 3 Fixing the outdoor unit in place
Install the outdoor unit on a rigid and stable base to
prevent disturbance from any noise caused by vibration.
When installing the unit on tall stands or in a location
exposed to strong winds, fix the unit securely to the
ground or structure.
1 Position the outdoor unit so that the air flow is directed
towards the outside, as indicated by the arrows on the
top of the unit.
2 Attach the outdoor unit to the appropriate support
using anchor bolts.
• The ground wire for the telephone line cannot be
used to ground the air conditioner.
3 DIf the outdoor unit is exposed to strong winds, install
shield plates around the outdoor unit, so that the fan
can operate correctly.
NOTE
• Install provided rubber legs to prevent vibration and
noise.
Rubber leg
14.17 (360)
24.41 (620) [Unit: inch (mm)]
CAUTION
• Install a drain outlet at the lowest end around the base
for outdoor unit drainage
• When installing the outdoor unit on the roof,
waterproof the unit and check the ceiling strength.
Optional: Fixing the outdoorunit to a wall with a rack
Designed to cut off residual vibration from
outdoor unit to rack. (not supplied with product)
Soft rubber designed to cut off vibration from
rack to wall. (not supplied with product)
Anchor bolt
0.79 inch (20 mm)
Base surface
• Install a proper grommet in order to reduce noise
and residual vibration transferred by the outdoor unit
towards the wall.
CAUTION
• When installing an air guide duct, be sure to check the
following:
‐The screws do not damage the copper pipe.
‐The air guide duct is fixed firmly on the guard fan.
Step 4 Connecting the powercables,
communication cable, and controllers
You must connect the following three electrical cables to
the outdoor unit:
• The main power cable between the auxiliary circuit
breaker and the outdoor unit.
• The outdoor-to-indoor power cable between the
outdoor unit and the indoor unit.
• The communication cable between the outdoor unit
and the indoor unit.
CAUTION
• During installation, make first the refrigerant
connections and then the electrical connections. If the
unit is being removed, first disconnect the electrical
cables and then the refrigerant connections.
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English
Installation Procedure
• Connect the air conditioner to the earthing system
before making the electrical connections.
Connecting wire conduits
When connecting cables between the indoor unit and the
outdoor unit, use conduits to protect the cables.
1 Remove the conduit plate from the product.
‐AJ036BXJ4CH
‐AJ020CXS3CH / AJ024CXS4CH / AJ030CXS4CH /
AJ036CXS4CH / AJ048BXJ5CH
2 Remove conduit knock-outs for the required number
of connections.
‐AJ036BXJ4CH
Outdoor-Indoor
[1/2 inch (12.7 mm)]
Power supply
[3/4 inch (19.05 mm)]
‐AJ020CXS3CH / AJ024CXS4CH / AJ030CXS4CH /
AJ036CXS4CH / AJ048BXJ5CH
Outdoor-Indoor
[1/2 inch (12.7 mm)]
Power supply
[3/4 inch
(19.05 mm)]
3 Insert the cables through the conduits, and then fix the
conduits to the conduit plate with the lock nuts.
4 Apply silicone to the end of the hose to prevent rain
from entering the hose.
Silicone
Conduit inserted into the outdoor unit
5 Connect the cables to the outdoor units.
For how to connect the cables, refer to the next page.
6 Attach the conduit plate to the product.
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Installation Procedure
English
Installation Procedure
Connecting the cables to the outdoor unit
L1 L2 L1 L2
L1 L2 F1 F2 L1 L2 F1 L1 L2 F1
12
F1 F2
F2
12
F1 F2
F1 F2
F2
F1 F2
F1 F2
12
1 2
12
B
C B C B C
A
F1 F2
F1 F2 F1 F2
L1 L2
1 2 21
Indoor unit
A-unit B-unit C-unit
Assembly cable
Communication cable
to indoor units
Earth
terminal
Earth
terminal
Earth
terminal
Earth
terminal
Power cable
to indoor units
Outdoor unit
Main Power
Supply cable
A
B
C
Cable Type: A
Cable Type: B
Cable Type: C
• AJ****X*3CH
L1 L2 L1 L2
L1 L2 F1 F2 L1 L2 F1 L1 L2 F1
12
F1 F2
F2
12
F1 F2
F1 F2
F2
F1 F2
F1 F2
12
1 2
12
B
C B C B C
A
F1 F2
F1 F2 F1 F2
L1 L2
1 2 21
L1 L2 F1 F2
F1 F2
F1 F2
12
B C
21
Earth
terminal
Outdoor unit
Main Power
Supply cable
A
B
C
Cable Type: A
Cable Type: B
Cable Type: C
• AJ****X*4CH
Indoor unit
A-unit B-unit C-unit D-unit
Assembly cable
Earth
terminal
Earth
terminal
Earth
terminal
Earth
terminal
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English
Installation Procedure
A
B
C
L N 1(L) 2(N) 1(L) 2(N)
1(L) 2(N) F1 F2 1(L) 2(N) F1 1(L) 2(N) F1 1(L) 2(N) F1F2
12
F1 F2 F1 F2
12
21
F2
12
F1 F2
F1 F2
F2
F1 F2
F1 F2
12
12
B
C B CB C B C
A
1(L) 2(N) F1 F2
F1 F2
F1 F2
12
B C
F1 F2 F1 F2
F1 F2 F1 F2
L N
1 2
21
1 2 21
A-unit B-unit C-unit D-unit E-unit
Indoor unit
Assembly cable
Earth
terminal
Earth
terminal
Outdoor unit
Main Power supply cable
Power cable to indoor units Communication cable
to indoor units
Cable Type: A
Cable Type: B
Cable Type: C
Earth
terminal
Earth
terminal
Earth
terminal
Earth
terminal
Earth
terminal
Earth
terminal
Earth
terminal
Earth
terminal
Earth
terminal
• AJ****X*5CH
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Installation Procedure
English
Installation Procedure
Specification for circuit breaker and power supply cord
• Power supply cord is not supplied with air conditioner.
• Select the power supply cord in accordance with relevant local and national regulations.
• Wire size must comply with the applicable local and national code.
• Specifications for local wiring power supply cord and branch wiring are in compliance with local cord.
The specification for cables
Model
Main Power Supply
Cable
Indoor Power Supply
Cable Communication Cable FUSE MCCB Type
GL
Specification Type Specification Type Specification Type
AJ036BXJ4CH
3G, 4.0 mm²
(8Kcmil or
0.0062 inch²
or10AWG),
H05RN-F grade
or more A
3G, 1.5 mm²
(3Kcmil or
0.0023 inch²
or14AWG),
H05RN-F grade
or more
B
2G, 0.75 mm²
(1.5Kcmil or
0.0012 inch²
or18AWG),
H05RN-F grade
or more
C
30A Frame: 35A
Trip: 30A 30A
AJ020CXS3CH
AJ024CXS4CH
AJ030CXS4CH
AJ036CXS4CH
AJ048BXJ5CH
3G, 6.0 mm²
(12Kcmil or
0.0093 inch²
or 8AWG),
H05RN-F grade
or more
40A Frame: 50A
Trip: 40A 40A
• Connect the power cable to the auxiliary circuit breaker.
An all-pole disconnection from the power supply must be incorporated in the fixed wiring with a contact opening of
≥0.12 inch (3 mm).
Tightening power terminal
• Connect the cables to the terminal board using the compressed ring terminal.
• Use rated cables only.
• Connect the cables with driver and wrench that can apply the rated torque to the screws.
• Make sure that appropriate tightening torque is applied for cable connection. If the terminal is loose, arc heat may
occur and cause fire and if the terminal is connected too firmly, terminal may get damaged.
Screw Tighten Torque [lbf·ft (kgf·cm)]
M4 0.87 ~1.30 (12.0 ~ 18.0)
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English
Installation Procedure
Central control connection (optional)
Do not connect the power and communication
wires to these terminal blocks
PCB MAIN - OUT
Terminal blocks(R1,R2) for connection with the Upper
Controller (DMS, Touch, On/Off Controller, etc.)
1Turn the power off and take off the cover of the outdoor units.
2Connect R1/R2 lines which are upper controller communication cables referring to upper figure.
(Upper controller power should be off.)
3Assemble a cover of the outdoor unit and turn the power on.
4Check the communication status.
5If you install a upper controller to the outdoor unit, every indoor unit which is connected to the outdoor unit can be
controlled simultaneously.
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14
Installation Procedure
English
Installation Procedure
Outdoor-to-indoor power terminal
specifications
• Connect the cables to the terminal board using the
compressed ring terminal.
• Cover a solderless ring terminal and a connector part
of the power cable and then connect it.
Silver solder
B
L
E
d1
D
t
F
d2
Nominal
dimensions for
cable
[inch² (mm²)]
Nominal
dimensions for
screw
[inch (mm)]
B D d1 E F L d2 t
Standard
dimension
[inch (mm)]
Allowance
[inch (mm)]
Standard
dimension
[inch (mm)]
Allowance
[inch (mm)]
Standard
dimension
[inch (mm)]
Allowance
[inch (mm)]
Min.
[inch
(mm)]
Min.
[inch
(mm)]
Max.
[inch
(mm)]
Standard
dimension
[inch (mm)]
Allowance
[inch (mm)]
Min.
[inch
(mm)]
0.002 (1.5)
0.15 (4)
0.260 (6.6) ±0.008 (±0.2) 0.134 (
3.4 )+0.012 (
+0.3 )
-0.008 ( -0.2 )0.067 (
1.7 )±0.008
(
±0.2 )
0.161
( 4.1 )
0.236
(6)
0.630
( 16 )0.169 (
4.3 )
+0.008 (+0.2)
0 (0)
0.028
( 0.7 )
0.315 (
8 )
0.004 (2.5) 0.260 (6.6) ±0.008 (±0.2) 0.165 (
4.2 )+0.012 (
+0.3 )
-0.008 ( -0.2 )0.091 (
2.3 )±0.008
(
±0.2 )
0.236
( 6 )
0.236
(6)
0.689
( 1 7. 5 )0.169 (
4.3 )
+0.008 (+0.2)
0 (0)
0.031
( 0.8 )
0.335 (
8.5 )
0.006 (4) 0.374 (
9.5 )±0.008 (±0.2) 0.220 ( 5.6 )+0.012 (
+0.3 )
-0.008 ( -0.2 )0.134 (3.4) ±0.008
(
±0.2 )
0.236
( 6 )0.197 (5) 0.787
(
20 )0.169 (
4.3 )
+0.008 (+0.2)
0 (0)
0.035
( 0.9 )
• Connect the rated cables only.
• Connect using a driver which is able to apply the rated
torque to the screws.
• If the terminal is loose, fire may occur caused by arc. If
the terminal is connected too firmly, the terminal may
be damaged.
Tightening torque [lbf·ft (kgf·cm)]
M4 0.87 to 1.30 (12.0 ~ 18.0)
M5 1.45 to 2.17 (20.0 ~ 30.0)
CAUTION
• When connecting cables, you can connect the cables to
the electrical part or connect them through the holes
below depending on the spot.
• Connect the communication cable between the indoor
and outdoor units through a conduit to protect against
external forces, and feed the conduit through the wall
together with refrigerant piping.
• Remove all burrs at the edge of the knock-out hole
and secure the cable to the outdoor knock-out using
lining and bushing with an electrical insulation such as
rubber and so on.
• Must keep the cable in a protection tube.
• Keep distances of 1.97 inch (50 mm) or more between
power cable and communication cable.
• When the cables are connected through the hole,
remove the Plate bottom.
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15
English
Installation Procedure
Outdoor-to-indoor power and communication
cables specifications
Indoor power supply
Power supply Max/Min (V) Indoor power cable
1Φ, 208-230V~, 60Hz ±10%
0.0039 inch² ↑ (2.5 mm² ↑),
3 wires
Communication cable
0.0012 to 0.0023 inch² (0.75 to 1.5 mm²), 2 wires
• 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)
• When installing the indoor unit in a computer room
or network room, use the double shielded (tape
aluminum / polyester braid + copper ) cable of
FROHH2R type.
Step 5 Connecting the refrigerant pipe
◆ AJ020CXS3CH
1 Piping outside diameter.
Indoor unit Out unit
Power
supply Ø,
V, Hz
Outside
diameter
Liquid Gas
**07/09/12/009/
012**, AR15**
AJ020CXS3CH 1,208-
230,60 1/4" 3/8"
AJ015**, AC015** 1/2"
A B
(h)
(H)
C
Main power switch
2 Piping length and the height.
1 Room
max
length
3 Room
total max
length
Max height
between
indoor unit &
outdoor unit
Max height
between
indoor
units
Dimension 82.0 ft
(25 m)
229.7 ft
(70 m)
49.2 ft
(15 m)
24.6 ft
( 7. 5 m )
Composition A,B,C A+B+C (H) (h)
Make at least one round:
It will reduce noise and vibration
CAUTION
• Minimum pipe length is 10 ft (3 m) to reduce noise and
vibration.
• The appearance of the unit may be different from the
diagram depending on the model.
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16
Installation Procedure
English
Installation Procedure
◆ AJ024CXS4CH
1 Piping outside diameter.
Indoor unit Out unit
Power
supply Ø,
V, Hz
Outside
diameter
Liquid Gas
**07/09/12/009/
012**, AR15** AJ024CXS4CH 1,208-
230,60 1/4"
3/8"
**18/018**
AJ015**, AC015**
1/2"
A B
(h) (H)
C D
Main power switch
2 Piping length and the height.
1 Room
max
length
4 Room
total max
length
Max height
between
indoor unit &
outdoor unit
Max height
between
indoor
units
Dimension 82.0 ft
(25 m)
229.7 ft
(70 m)
49.2 ft
(15 m)
24.6 ft
( 7. 5 m )
Composition A,B,C,D A+B+C+D (H) (h)
Make at least one round:
It will reduce noise and vibration
CAUTION
• Minimum pipe length is 10 ft (3 m) to reduce noise and
vibration.
• The appearance of the unit may be different from the
diagram depending on the model.
◆ AJ030CXS4CH / AJ036CXS4CH / AJ036BXJ4CH
1 Piping outside diameter.
Indoor unit Out unit
Power
supply Ø,
V, Hz
Outside
diameter
Liquid Gas
**07/09/12/009/
012**, AR15**
AJ030CXS4CH /
AJ036CXS4CH /
AJ036BXJ4CH
1,208-
230,60 1/4"
3/8"
**18/018**
AJ015**, AC015** 1/2"
**24/024** 5/8"
A B
(h) (H)
C D
Main power switch
2 Piping length and the height.
1 Room
max
length
4 Room
total max
length
Max height
between
indoor unit &
outdoor unit
Max height
between
indoor
units
Dimension 82.0 ft
(25 m)
229.7 ft
(70 m)
49.2 ft
(15 m)
24.6 ft
( 7. 5 m )
Composition A,B,C,D A+B+C+D (H) (h)
Make at least one round:
It will reduce noise and vibration
CAUTION
• Minimum pipe length is 10 ft (3 m) to reduce noise and
vibration.
• The appearance of the unit may be different from the
diagram depending on the model.
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17
English
Installation Procedure
◆ AJ048BXJ5CH
1 Piping outside diameter
Indoor unit Out unit
Power
supply Ø,
V, Hz
Outside
diameter
Liquid Gas
**07/09/12/009/
012**, AR15**
AJ048BXJ5CH 1,208-
230,60 1/4"
3/8"
**18/018**
AJ015**, AC015**
1/2"
**24/024** 5/8"
A B
(h) (H)
C D E
Main power switch
2 Piping length and the height.
1 Room
max
length
5 Room
total max
length
Max height
between
indoor unit
& outdoor
unit
Max
height
between
indoor
units
Dimension 82.0 ft
(25 m)
229.7 ft
(70 m) 49.2 ft (15 m) 24.6 ft ( 7. 5 m )
Composition A,B,C,D,E A+B+C+D+E (H) (h)
Make at least one round:
It will reduce noise and vibration
CAUTION
• Minimum pipe length is 10 ft (3 m) to reduce noise and
vibration.
• The appearance of the unit may be different from the
diagram depending on the model.
CAUTION
• If the indoor unit combination includes AJ***BNHDCH
/ AC***BNZDCH indoor units, select a combination
according to the guide in the Technical Data Book.
• If error code E563 occurs, Cool Mode Try run and Pipe
Check operations are still possible.
NOTE
• You can use the Cool and Heat modes in the following
conditions :
Mode Cool Heat
Outdoor
temperature
14 ℉ to 114.8 ℉
(-10 ℃ to 46 ℃)
AJ***BXJ*CH AJ***CXS*CH
5 ℉ to 75.2 ℉
(-15 ℃ to 24 ℃)
-13 ℉ to 75.2 ℉
(-25 ℃ to 24 ℃)
‐It could take maximum 60 minutes to operate for
the protection of the compressor, if the outdoor
temperature is below 23 ℉ (-5 ℃).
Step 6 Optional: Cutting and aring
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 it with a pipe
cutter, taking care to ensure that the cut edge remains
at a 90° angle with the side of the pipe. Refer to the
illustrations below for examples of edges cut correctly
and incorrectly.
90° Oblique Rough Burr
3 To prevent any gas from leaking out, remove all burrs
at the cut edge of the pipe, using a reamer.
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18
Installation Procedure
English
Installation Procedure
4 Slide a flare nut on to the pipe and flare the pipe.
D
D
L
A
90° ±2°
Pipe Flare
45° ±2°
R0.02 to 0.03 inch
(R 0.4 to 0.8 mm)
Flare
Outer Diameter
(D) Depth (A) Flare dimension (L)
mm inch mm inch mm inch
Ø6.35 1/4 1.3 0.051 8.7 to 9.1 0.34 to 0.36
Ø9.52 3/8 1.8 0.071 12.8 to 13.2 0.50 to 0.52
Ø12.70 1/2 2.0 0.079 16.2 to 16.6 0.64 to 0.65
Ø15.88 5/8 2.2 0.087 19.3 to 19.7 0.76 to 0.78
5 Check that the flaring is correct, referring to the
illustrations below for examples of incorrect flaring.
3
2
1
Correct Inclined Cracked
Uneven
Thickness
Damaged
Surface
CAUTION
• If the pipes require brazing ensure that OFN (Oxygen
Free Nitrogen) is flowing through the system.
• Nitrogen blowing pressure range is 2.9 to 7.3 psi
(0.02 to 0.05 MPa).
Step 7 Connecting refrigerant pipes
and vacuuming
WARNING
• When installing, make sure there is no leakage. When
recovering the refrigerant, ground the compressor first
before removing the connection pipe. If the refrigerant
pipe is not properly connected and the compressor
works with the service valve open, the pipe inhales the
air and it makes the pressure inside of the refrigerant
cycle abnormally high. It may cause explosion and injury.
The outdoor unit is loaded with sufficient R-410A
refrigerant. Do not vent R-410A into atmosphere: it is a
fluorinated greenhouse gas, covered by Kyoto Protocol,
with a Global Warming Potential (GWP) = 2088.
You should purge the air in the indoor unit and in the
pipe. If air remains in the refrigerant pipes, it affects the
compressor. It may cause reduction of cooling capacity
and malfunction. Refrigerant for air purging is not
charged in the outdoor unit. Use Vacuum Pump as seen
in the picture.
1 Check the piping connections.
2 Connect the charging hose of low pressure side of
manifold gauge to the stop valve having a service port.
Model Name Valve
3/8'' 1/2''
AJ020CXS3CH 3 -
AJ024CXS4CH
22
AJ030CXS4CH
AJ036CXS4CH
AJ036BXJ4CH
AJ048BXJ5CH 3
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19
English
Installation Procedure
CAUTION
• Make the electrical connection and leave the system
into "stand by mode". Do not turn on the system! This
is necessary for better vacuum operation (full OPEN
position of Electronic Expansion Valve - EEV -).
Tightening torque for body cap
(Refer to the table)
Spindle
Charging core
Charging port cap
R-410A: Diameter of the
screw-1/2-20UNF
Vacuum
Pump
3 Open the valve of the low pressure side of manifold
gauge counter clockwise.
4 Purge the air from the system using vacuum pump for
about 30 minutes.
• Close the valve of the low pressure side of manifold
gauge clockwise.
• Make sure that pressure gauge show -14.5 psi
(-0.1 MPa). after about 30 minutes. This procedure
is very important in order to avoid gas leak.
• Turn off the vacuum pump.
• Remove the hose of the low pressure side of
manifold gauge.
5 Set spindle of both liquid side and gas side of stop
valve to the open position.
6 Mount the valve stem nuts and the service port cap to
the valve, and tighten them with a torque wrench.
Outer Diameter
[inch (mm)]
Tightening torque
Body cap
[(lbf·ft (Nꞏm)]
Charging port cap
[(lbf·ft (Nꞏm)]
Φ1/4 (Ø 6.35) 14.8 to 18.4
(20 to 25)
7.4 to 8.9 (10 to 12)
Φ3/8 (Ø 9.52)
Φ1/2 (Ø 12.70) 18.4 to 22.1
(25 to 30)
Φ5/8 (Ø 15.88) 22.1 to 25.8
(30 to 35)
※ The designs and shape are subject to change according
to the model.
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20
Installation Procedure
English
Installation Procedure
Step 8 Performing the gas leak test
Before completing the installation (insulation of the
cables, hose and piping and fixing of the indoor unit to the
installation plate), you must check that there are no gas
leaks.
To check for
gas leaks on
the...
Then, using a leak detector,check the ...
Outdoor unit Valves on sections A and B.
Indoor unit Flare nuts at the end of sections C and D.
C D
Outdoor unit
B(Gas)
Indoor unit
A(Liquid)
• The designs and shape are subject to change
according to the model.
LEAK TEST WITH NITROGEN (before opening valves)
Pressure check the refrigerant system using high pressure
nitrogen in order to detect basic refrigerant leaks Before
performing the vacuum process and releasing the
factory R-410A charge into the refrigerant pipes, it is
the responsibility of the installer to pressurize the whole
system with nitrogen (using a cylinder with pressure
reducer) at a pressure above 580.2 psi (4 MPa) (gauge).
LEAK TEST WITH R-410A (after opening valves)
Before opening valves, discharge all the nitrogen into the
system and create vacuum. After opening valves check
leaks using a leak detector for refrigerant R-410A.
Once you have completed all the connections, check for
possible leaks using leak detector specifically designed for
HFC refrigerants.
Step 9 Adding refrigerant (R-410A)
Calculating the quantity of refrigerant to add
The quantity of additional refrigerant is variable according to
the installation situation. Thus, make sure the outdoor unit
situation before adding refrigerant.
If you install the excessive length of pipe, add additional
refrigerant as 0.11 oz or 0.22 oz per unit ft ; refer to the table
below.
Refer to the Service Manual for more details on this operation.
Model Name Total connecting
pipe lengh (L) Adding refrigerant
AJ036BXJ4CH
(LT) ft ≤131.2 ft Chargeless
>131.2 ft (LT-131.2) ft x 0.22 oz
(LT) m ≤ 40 m Chargeless
> 40 m (LT- 40) m x 20 g
AJ***CXS*CH
(LT) ft ≤164.0 ft Chargeless
>164.0 ft (LT-164.0) ft x 0.22 oz
(LT) m ≤ 50 m Chargeless
> 50 m (LT - 50) m x 20 g
AJ048BXJ5CH
(LT) ft ≤164.0 ft Chargeless
>164.0 ft (LT-164.0) ft x 0.11 oz
(LT) m ≤ 50 m Chargeless
> 50 m (LT - 50) m x 10 g
Charging the system with liquid refrigerant
R-410A is a mixed type of refrigerant. It is necessary for
recharging under conditions of liquid. When recharging
refrigerant from the refrigerant cylinder to the
equipment, follow the instructions below.
• Before recharging, check whether the cylinder has
a siphon or not. There are two ways to recharge the
refrigerant.
Cylinderwith siphon Cylinderwithout siphon
siphon
Charge the refrigerant standing
the cylinder upright. Charge the refrigerant turning
the cylinder upside down.
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