LG | ARUN048GSS4.EWGBLUS | LG ARUN038GSS4.EWGBLUS Owner's manual

ENGLISH
FRANÇAIS ESPAÑOL
INSTALLATION MANUAL
AIR
CONDITIONER
Please read this installation manual completely before installing the product.
Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
Please retain this installation manual for future reference after reading it
thoroughly.
Original instruction
www.lg.com
P/NO : MFL67798024
2
ENGLISH
TIPS FOR SAVING ENERGY
Here are some tips that will help you minimize the power consumption
when you use the air conditioner. You can use your air conditioner
more efficiently by referring to the instructions below:
• Do not cool excessively indoors. This may be harmful for your health
and may consume more electricity.
• Block sunlight with blinds or curtains while you are operating the air
conditioner.
• Keep doors or windows closed tightly while you are operating the air
conditioner.
• Adjust the direction of the air flow vertically or horizontally to circulate
indoor air.
• Speed up the fan to cool or warm indoor air quickly, in a short period
of time.
• Open windows regularly for ventilation as the indoor air quality may
deteriorate if the air conditioner is used for many hours.
• Clean the air filter once every 2 weeks. Dust and impurities collected
in the air filter may block the air flow or weaken the cooling / dehumidifying functions.
For your records
Staple your receipt to this page in case you need it to prove the date of
purchase or for warranty purposes. Write the model number and the
serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
Installation
• Have all electric work done by a licensed electrician according to "Electric Facility Engineering Standard" and "Interior Wire Regulations" and the
instructions given in this manual and always use a special circuit.
- If the power source capacity is inadequate or electric work is performed improperly, electric shock or fire may result.
• Ask the dealer or an authorized technician to install the air conditioner.
- Improper installation by the user may result in water leakage, electric
shock, or fire.
• Always ground the product.
- There is risk of fire or electric shock.
• Always intstall a dedicated circuit and breaker.
- Improper wiring or installation may cause fire or electric shock.
• For re-installation of the installed product, always contact a dealer or an
Authorized Service Center.
- There is risk of fire, electric shock, explosion, or injury.
• Do not install, remove, or re-install the unit by yourself (customer).
- There is risk of fire, electric shock, explosion, or injury.
• Do not store or use flammable gas or combustibles near the air conditioner.
- There is risk of fire or failure of product.
• Use the correctly rated breaker or fuse.
- There is risk of fire or electric shock.
• Prepare for strong wind or earthquake and install the unit at the specified place.
- Improper installation may cause the unit to topple and result in injury.
• Do not install the product on a defective installation stand.
- It may cause injury, accident, or damage to the product.
• Use a vacuum pump or Inert(nitrogen) gas when doing leakage test or
air purge. Do not compress air or Oxygen and do not use Flammable
gases. Otherwise, it may cause fire or explosion.
- There is the risk of death, injury, fire or explosion.
• When installing and moving the air conditioner to another site, do not
charge it with a different refrigerant from the refrigerant specified on
the unit.
- If a different refrigerant or air is mixed with the original refrigerant, the
refrigerant cycle may malfunction and the unit may be damaged.
• Do not reconstruct to change the settings of the protection devices.
- If the pressure switch, thermal switch, or other protection device is
shorted and operated forcibly, or parts other than those specified by
LGE are used, fire or explosion may result.
• Ventilate before operating air conditioner when gas leaked out.
- It may cause explosion, fire, and burn.
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
Always comply with the following precautions to avoid dangerous situations and ensure peak performance of your product
• Securely install the cover of control box and the panel.
- If the cover and panel are not installed securely, dust or water may
enter the outdoor unit and fire or electric shock may result.
• If the air conditioner is installed in a small room, measures must be
taken to prevent the refrigerant concentration from exceeding the safety
limit when the refrigerant leaks.
- Consult the dealer regarding the appropriate measures to prevent the
safety limit from being exceeded. Should the refrigerant leak and cause
the safety limit to be exceeded, harzards due to lack of oxygen in the
room could result.
Operation
! WARNING
It can result in serious injury or death when the directions are ignored
! CAUTION
It can result in minor injury or product damage when the directions are
ignored
! WARNING
• Installation or repairs made by unqualified persons can result in hazards to you and others.
• The information contained in the manual is intended for use by a
qualified service technician familiar with safety procedures and
equipped with the proper tools and test instruments.
• Failure to carefully read and follow all instructions in this manual can
result in equipment malfunction, property damage, personal injury
and/or death.
• Do not damage or use an unspecified power cord.
- There is risk of fire, electric shock, explosion, or injury.
• Use a dedicated outlet for this appliance.
- There is risk of fire or electrical shock.
• Be cautious that water could not enter the product.
- There is risk of fire, electric shock, or product damage.
• Do not touch the power switch with wet hands.
- There is risk of fire, electric shock, explosion, or injury.
• When the product is soaked (flooded or submerged), contact an Authorized
Service Center.
- There is risk of fire or electric shock.
• Be cautious not to touch the sharp edges when installing.
- It may cause injury.
• Take care to ensure that nobody could step on or fall onto the outdoor unit.
- This could result in personal injury and product damage.
• Do not open the inlet grille of the product during operation. (Do not touch the
electrostatic filter, if the unit is so equipped.)
- There is risk of physical injury, electric shock, or product failure.
3
Installation
• Always check for gas (refrigerant) leakage after installation or repair of product.
- Low refrigerant levels may cause failure of product.
• Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.
- It may cause a problem for your neighbors.
• Keep level even when installing the product.
- To avoid vibration or water leakage.
• Do not install the unit where combustible gas may leak.
- If the gas leaks and accumulates around the unit, an explosion may result.
• Use power cables of sufficient current carrying capacity and rating.
- Cables that are too small may leak, generate heat, and cause a fire.
• Do not use the product for special purposes, such as preserving foods, works of art,
etc. It is a consumer air conditioner, not a precision refrigeration system.
- There is risk of damage or loss of property.
• Keep the unit away from children. The heat exchanger is very sharp.
- It can cause the injury, such as cutting the finger. Also the damaged fin may result
in degradation of capacity.
• When installting the unit in a hospital, communication station, or similar place, provide sufficient protection against noise.
- The inverter equipment, private power generator, high-frequency medical
equipment, or radio communication equipment may cause the air conditioner to
operate erroneously, or fail to operate. On the other hand, the air conditioner
may affect such equipment by creating noise that disturbs medical treatment or
image broadcasting.
• Do not install the product where it is exposed to sea wind (salt spray) directly.
- It may cause corrosion on the product. Corrosion, particularly on the condenser and
evaporator fins, could cause product malfunction or inefficient operation.
Operation
• Do not use the air conditioner in special environments.
- Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of the air conditioner or damage its parts.
• Do not block the inlet or outlet.
- It may cause failure of appliance or accident.
• Make the connections securely so that the outside force of the cable may not be applied to the terminals.
- Inadequate connection and fastening may generate heat and cause a fire.
• Be sure the installation area does not deteriorate with age.
- If the base collapses, the air conditioner could fall with it, causing property damage,
product failure, or personal injury.
• Install and insulate the drain hose to ensure that water is drained away properly based on
the installation manual.
- A bad connection may cause water leakage.
• Be very careful about product transportation.
- Only one person should not carry the product if it weighs more than 20kg(44lbs).
- Some products use PP bands for packaging. Do not use any PP bands for a means
of transportation. It is dangerous.
- Do not touch the heat exchanger fins. Doing so may cut your fingers.
- When transporting the outdoor unit, suspending it at the specified positions on the
unit base. Also support the outdoor unit at four points so that it cannot slip sideways.
• Safely dispose of the packing materials.
- Packing materials, such as nails and other metal or wooden parts, may cause stabs or
other injuries.
- Tear apart and throw away plastic packaging bags so that children may not play with
them. If children play with a plastic bag which was not torn apart, they face the risk of
suffocation.
• Turn on the power at least 6 hours before starting operation.
- Starting operation immediately after turning on the main power switch can result in
severe damage to internal parts. Keep the power switch turned on during the operational season.
• Do not touch any of the refrigerant piping during and after operation.
- It can cause a burn or frostbite.
• Do not operate the air conditioner with the panels or guards removed.
- Rotating, hot, or high-voltage parts can cause injuries.
• Do not directly turn off the main power switch after stopping operation.
- Wait at least 5 minutes before turning off the main power switch. Otherwise it may
result in water leakage or other problems.
• Auto-addressing should be done in condition of connecting the power of all indoor and outdoour units. Auto-addressing should also be done in case of changing the indoor unit PCB.
• Use a firm stool or ladder when cleaning or maintaining the air conditioner.
- Be careful and avoid personal injury.
• Do not insert hands or other objects through the air inlet or outlet while the air conditioner is plugged in.
- There are sharp and moving parts that could cause personal injury.
TABLE OF CONTENTS
2
2
4
4
4
5
5
TIPS FOR SAVING ENERGY
7
Air guide work
7
LIFTING METHOD
8
The location of the Anchor bolts
IMPORTANT SAFETY INSTRUCTIONS
INSTALLATION PROCESS
OUTDOOR UNITS INFORMATION
ALTERNATIVE REFRIGERANT R410A
SELECT THE BEST LOCATION
INSTALLATION SPACE
8
INSTALLATION
8
Foundation for Installation
9
10
Preparation of Piping
Plumbing materials and storage methods
10 REFRIGERANT PIPING INSTALLATION
10
Precautions on Pipe connection / Valve operation
11 PIPE CONNECTIONS BETWEEN INDOOR
AND OUTDOOR UNIT
11
Preparation Work
11
12
12
14
15
15
16
17
18
Pipe Drawing Out during Single / Series connection
Selection of Refrigerant Piping
Refrigerant piping system
Refrigerant charging
Distribution Method
Branch pipe Fitting
Leak Test and Vacuum drying
Vacuum Mode
Thermal insulation of refrigerant piping
18 ELECTRICAL WIRING
18
Caution
19
20
20
20
21
21
22
22
23
23
23
23
24
24
25
Control box and connecting position of wiring
Communication and Power Cables
Wiring of main power supply and equipment capacity
Field Wiring
Installation of IO Module(optional)
Checking the setting of outdoor units
Automatic Addressing
Group Number setting
Cool & Heat selector
Static pressure compensation mode
Night Low Noise Function
Setting the ODU address
Snow removal & rapid defrost
Target pressure adjusting
Self-Diagnosis Function
27 CAUTION FOR REFRIGERANT LEAK
27
Introduction
27
Checking procedure of limiting concentration
28 INSTALLATION GUIDE AT THE SEASIDE
28
Model Designation
28
Airborne Noise Emission
ENGLISH
! CAUTION
4
ENGLISH
INSTALLATION PROCESS
Determination of division work
Preparation of contract drawings
Sleeve and insert work
Indicate clearly who will be responsible for switch setting.
Make connection clearly between outdoor, indoor,
remote controller and option.
Take account of gradient
of drain piping
Outdoor unit foundation work
OUTDOOR UNITS INFORMATION
! CAUTION
• Ratio of the connectable Indoor Units to the Outdoor: Within
50 ~ 130%
• Ratio of running Indoor Units to the Outdoor: Within 10 ~ 100%
• A combination operation over 100% cause to reduce each indoor unit capacity.
The foundation must be level even
Installation of indoor unit
Check model name to
make sure the fitting
is made correctly
Installation of outdoor unit
Avoid short circuits and ensure
sufficient space is allowed for service
Refrigerant piping work
Special attention to dryness,
cleanness and tightness
Drain pipe work
Adjust to downward gradient
Duct work
Make sure airflow is sufficient
Heat insulation work
Electrical work
(connection circuits and drive circuits)
Airtight test
Vacuum drying
Make sure no gaps are left where
the insulating materials are joined
Multiple core cable must not be used.
(suitable cable should be selected)
In the final check for 24hours at 3.8 MPa(38.7 kgf/cm2) there
must be no drop in pressure.
The vacuum pump used must have a capacity of reaching at least
5 torr, more than 1 hour
Additional charge of refrigerant
Recharge correctly as calculated in this manual. and record the
amount of added refrigerant
Fit facing panels
Make sure there are no gaps left between the facing materials
used on the ceiling
Automatic addressing of indoor unit
Test run adjustment
Transfer to customer with explanation
Refer to automatic addressing flowchart
Preheat the crank case with the electrical heater for more than 6 hours.
Power Supply : 1 Ø, 208-230 V~, 60Hz
System(HP)
Model
kg
lbs
Number of maximum connectable indoor units
kg
Net weight
lbs
mm
Dimensions (WxHxD)
inch
Liquid Pipes mm(inch)
Piping
Connections Gas Pipes
mm(inch)
Refrigerant Precharged
Amount
4
ARUN038GSS4
3
6.6
6
94
207
950×1380×330
37.4 × 54.3 × 13.0
Ø9.52(3/8)
Ø15.88(5/8)
5
ARUN048GSS4
3
6.6
8
94
207
950×1380×330
37.4 × 54.3 × 13.0
Ø9.52(3/8)
Ø15.88(5/8)
6
ARUN053GSS4
3
6.6
9
94
207
950×1380×330
37.4 × 54.3 × 13.0
Ø9.52(3/8)
Ø19.05(3/4)
ALTERNATIVE REFRIGERANT R410A
The refrigerant R410A has the property of higher operating pressure in
comparison with R22.
Therefore, all materials have the characteristics of higher resisting
pressure than R22 ones and this characteristic should be also considered during the installation.
R410A is an azeotrope of R32 and R125 mixed at 50:50, so the ozone
depletion potential (ODP) of R410A is 0.
Run each indoor unit in turn to make sure the pipe work
has been fitted correctly
Explain the use of the system as clearly as possible to your customer and
make sure all relevant documentation is in order
! CAUTION
• The above list indicates the order in which the individual work operations are normally carried out but this order may be varied where
local conditions warrants such change.
• The thickness of the piping should comply with the relevant local
and national regulations for the designed pressure 3.8MPa(551.1psi).
• Since R410A is a mixed refrigerant, the required additional
refrigerant must be charged in its liquid state.(If the refrigerant is
charged in its gaseous state, its composition changes and the system will not work properly.)
! CAUTION
• The wall thickness of the piping should comply with the relevant
local and national regulations for the designed pressure
3.8MPa(551.1psi).
• Since R410A is a mixed refrigerant, the required additional
refrigerant must be charged in its liquid state.
If the refrigerant is charged in its gaseous state, its composition
changes and the system will not work properly.
• Do not place the refrigerant container under the direct rays of the
sun to prevent it from exploding.
• For high-pressure refrigerant, any unapproved pipe must not be
used.
• Do not heat pipes more than necessary to prevent them from
softening.
• Be careful not to install wrongly to minimize economic loss
because it is expensive in comparison with R22.
5
INSTALLATION SPACE
Select space for installing outdoor unit, which will meet the following
conditions:
• The following values are the least space for installation. If any service
area is needed for service according to field circumstance, obtain
enough service space.
• The unit of values is mm.
In case of obstacles on the suction side
1. Stand alone installation
)
-5/8
(19
500 or less
Select installation location considering following conditions to avoid
bad condition when additionally performing defrost operation.
• Install the outdoor unit at a place well ventilated and having a lot of
sunshine in case of installing the product at a place with a high humidity in winter (near beach, coast, lake, etc).
(Ex) Rooftop where sunshine always shines.
• Performance of heating will be reduced and preheat time of the indoor unit may be lengthened in case of installing the outdoor unit in
winter at following location:
- Shade position with a narrow space
- Location with much moisture in neighboring floor.
- Location with much humidity around.
- Location where ventilation is good. It is recommended to install the
outdoor unit at a place with a lot of sunshine as possible as.
- Location where water gathers since the floor is not even.
100
(3
or m -15/16
ore ) 10
0(3
or m -15/16
ore )
6)
5/1
(3-1 ore
0
0
1 or m
)
-5/8
(19
500 or less
150
(3
or m -15/16
ore ) 1
50(
3
or m -15/16
ore )
6)
5/1
(3-1 re
100 or mo
1000 (39-1/4)
or more
6)
5/1
3-1 ore
(
0
10 or m
1000 (39-1/4)
or more
• No direct thermal radiation from other heat sources
• No possibility of annoying neighbors by noise from unit
• No exposition to strong wind
• With strength which bears weight of unit
• Note that drain flows out of unit when heating
• With space for air passage and service work shown next
• Because of the possibility of fire, do not install unit to the space
where generation, inflow, stagnation, and leakage of combustible
gas is expected.
• Avoid unit installation in a place where acidic solution and spray (sulfur) are often used.
• Do not use unit under any special environment where oil, steam and
sulfuric gas exist.
• It is recommended to fence round the outdoor unit in order to prevent any person or animal from accessing the outdoor unit.
• If installation site is area of heavy snowfall, then the following directions should be observed.
- Make the foundation as high as possible.
- Fit a snow protection hood.
6)
5/1
(3-1 re
150 or mo
Unit:mm(inch)
)
-5/8
(19 ss
0
0
5 r le
o
100
0(
or m 39-1/4
ore ) 10
0(3
or m -10/11)
ore
200
(7
or m -7/8)
ore
)
-7/8
(11
300 r more
o
1000 (39-1/4)
or more
2. Collective installation
When installing the outdoor unit in a place that is constantly exposed to a
strong wind like a coast or on a high story of a building, secure a normal
fan operation by using a duct or a wind shield.
• Install the unit so that its discharge port faces to the wall of the building.
Keep a distance 500mm or more between the unit and the wall surface.
• Supposing the wind direction during the operation season of the air
conditioner, install the unit so that the discharge port is set at right
angle to the wind direction.
100
0(
or m 39-1/4
ore ) 10
0(3
or m -15/16)
ore
200
(7-7
/8
ore )
or m
)
-7/8
(11 e
300 r mor
o
Unit:mm(inch)
700
Air inlet grille
[Unit : mm]
Turn the air outlet side toward the
building's wall, fence or windbreak screen.
! WARNING
Fix the outdoor unit firmly with anchor bolt or it may fall and hurt
people. (refer to ‘Foundation for installation’)
ENGLISH
SELECT THE BEST LOCATION
6
L>H
)
-5/8
(19
500 r less
o
L>H
1000 (39-1/4)
or more
1. Stand alone installation
/8)
9-5
(1
500
or
H
100
(3
or m -15/16
ore )
re
mo
) or
/8
9-5
)
-7/8
(11
300 r more
o
/4)
9-1
0 (3 re
100 or mo
H
L
L
1000 (39-1/4)
or more
)
-5/8
(19
500 r less
o
100
(3
or m -15/16
ore )
/4)
9-1
0(4 e
125 r mor
o
)
-7/8
(11
300 r more
o
Unit:mm(inch)
re
mo
(1
500
2. Collective installation
/8)
-5
(19
ess
or l
Obstacle height of discharge side is lower than the unit
1000 (39-1/4)
or more
500
1. Stand alone installation
L≤H
L≤H
) or
-5/8
19
00(
less
4)
-1/
39
0 ( ore
0
10 or m
)
-5/8
(19
500 r less
o
Unit:mm(inch)
6)
5/1
(3-1 re
100 or mo
L
10
0(
or 3-15/
mo 16
re )
H
H
4)
-1/
39
0 ( ore
0
10 or m
L
10
0(
or 3-15/
mo 16
re )
1000 (39-1/4)
or more
5
)
-7/8
(11
300 r more
)
o
/4
9-1
0 (3 re
100 or mo
2. Collective installation
L≤H
In case of obstacles on the suction and the
discharge side
)
-5/8
(19
500 r less
o
L
H
H
Obstacle height of discharge side is higher than the unit
1. Stand alone installation
50
less
1000 (39-1/4)
or more
90(1
L
) or
5/8
L>H
H
L>H
9-5
0(1 re
50 r mo
o
100
(3
or m -15/16
ore )
9)
0(5
150 more
or
)
-7/8
(11
300 r more
o
100
(3
or m -15/16
ore )
)
-7/8
(11
300 r more
o
59)
(
0
150 more
or
Unit:mm(inch)
L
H
)
/16
-15
0(3 ore
10 or m
/8)
1000 (39-1/4)
or more
L≤H
L
ENGLISH
2. Collective installation
In case of obstacles on the discharge side
/8)
9-7 e
0(
25 r mor
)
4
o
-1/
(39
00 ore
10 or m
Unit:mm(inch)
7
LIFTING METHOD
• When carrying the suspended, unit pass the ropes between legs of
base panel under the unit.
• Always lift the unit with ropes attached at four points so that impact
is not applied to the unit.
• Attach the ropes to the unit at an angle of 40° or less.
• Use only accessories and parts which are of the designated specification when installing.
Air outlet grille
Intake hole
Corner
Handle
- The height of H frame must be more than 2 times the snowfall and
its width shall not exceed the width of the product. (If width of the
frame is wider than that of the product, snow may accumulate)
- Don't install the suction hole and discharge hole of the Outdoor
Unit facing the seasonal wind.
Air guide work
In case of out door unit is located outdoor cabin of apartment or flats,
then the efficiency can drop and system pressure increases thus finally
damaging the compressor or other components in the system by heat
short circuit.
• Do not use bended louver. It disturbs the air circulation.
• The opening ratio is at least 80%
• Louver angle is 0-20 degree
• Louver pitch will be as more than 100mm(3.9 inch)
• If you have a insect control net, consider the shielded area and static
pressure loss
• Check the static pressure range of outdoor unit fan.
Then, install air guide in the range of static pressure.
350mm
(13.8 inch)
or more
Sub line
Less than
20 degrees
Intake
area
300mm
150mm
(5.9 inch) or (11.8 inch)
more
or more
Always hold the unit by the corners, as holding
it by the side intake holes on the casing may
cause them to deform.
Louver pitch
100 mm(3.9
mm or more
inch)
or more
A 40° or less
WARNING
Air guide duct
Air guide
Wind speed : 1.5m/s(4.9 ft/s)
Secure minimum intake area
When the intake area is not secured can efficiency drop and products
may not be operating
• Minimum intake area (For reference)
Unit : m2 (ft2)
Model
ARUN053GSS4
ARUN048GSS4
ARUN038GSS4
Minimum intake area
1.2(15.5)
! CAUTION
Be very careful while carrying the product.
• Do not have only one person carry product if it is more than
20kg(44lbs).
• PP bands are used to pack some products. Do not use them as
a mean for transportation because they are dangerous.
• Do not touch heat exchanger fins with your bare hands. Otherwise you may get a cut in your hands.
• Tear plastic packaging bag and scrap it so that children cannot
play with it. Otherwise plastic packaging bag may suffocate children to death.
• When carrying in Outdoor Unit, be sure to support it at four
points. Carrying in and lifting with 3-point support may make
Outdoor Unit unstable, resulting in a fall.
• Use 2 belts of at least 8m(26.2 ft) long.
• Place extra cloth or boards in the locations where the casing
comes in contact with the sling to prevent damage.
• Hoist the unit making sure it is being lifted at its center of gravity.
ENGLISH
Seasonal wind and cautions in winter
• Sufficient measures are required in a snow area or severe cold area
in winter so that product can be operated well.
• Get ready for seasonal wind or snow in winter even in other areas.
• Install a suction and discharge duct not to let in snow or rain.
• Install the outdoor unit not to come in contact with snow directly. If
snow piles up and freezes on the air suction hole, the system may malfunction. If it is installed at snowy area, attach the hood to the system.
• Install the outdoor unit at the higher installation console by 50cm
than the average snowfall (annual average snowfall) if it is installed at
the area with much snowfall.
• Where snow accumulated on the upper part of the Outdoor Unit by
more than 10cm, always remove snow for operation.
8
• Install at places where it can endure the weight and vibration/noise
of the outdoor unit.
• The outdoor unit supports at the bottom shall have width of at least
100mm under the Unit’s legs before being fixed.
• The outdoor unit supports should have minimum height of 200mm.
• Anchor bolts must be inserted at least 75mm.
Ⓐ The corner part must be fixed firmly. Otherwise, the support for the
installation may be bent.
Ⓑ Get and use M10 Anchor bolt.
Ⓒ Put Cushion Pad between the outdoor unit and ground support for
the vibration protection in wide area.
Ⓓ Space for pipes and wiring (Pipes and wirings for bottom side)
Ⓔ H-beam support
Ⓕ Concrete support
Unit : mm(inch)
Anti-vibration
materials
Concrete
base
Spring washer
Frame
Nut
m
00m
m
ast 1 t 100m
e
l
t
A
as
At le
m
00m
ast 1 0mm
At le east 10
At l
Center of the Unit
0mm
ast 10
At le
Center of the Unit
The location of the Anchor bolts
a
b
e
75 (3)
Four bolt are
required
3 thread ridges
200 (7-7/8)
0mm
st 10
a
e
l
At
200 (7-7/8)
For outdoor units
should not be
supported only
by the corner
supports.
75 (3)
H-Beam
100(3-15/16)
ENGLISH
INSTALLATION
! WARNING
• Install where it can sufficiently support the weight of the outdoor unit.
If the support strength is not enough, the outdoor unit may drop
and hurt people.
• Install where the outdoor unit may not fall in strong wind or
earthquake.
If there is a fault in the supporting conditions, the outdoor unit
may fall and hurt people.
• Please take extra cautions on the supporting strength of the
ground, water outlet treatment(treatment of the water flowing
out of the outdoor unit in operation), and the passages of the
pipe and wiring, when making the ground support.
• Do not use tube or pipe for water outlet in the Base pan. Use
drainage instead for water outlet. The tube or pipe may freeze
and the water may not be drained.
e
! CAUTION
c
d
[Unit : mm(inch)]
ARUN053GSS4
ARUN048GSS4
ARUN038GSS4
a
b
c
d
e
• Be sure to remove the Pallet(Wood Support) of the bottom
side of the outdoor unit Base Pan before fixing the bolt. It
may cause the unstable state of the outdoor settlement,
and may cause freezing of the heat exchanger resulting in
abnormal operations.
• Be sure to remove the Pallet(Wood Support) of the bottom
side of the outdoor unit before welding. Not removing Pallet(Wood Support) causes hazard of fire during welding.
920(36.2)
618(24.3)
330(13)
360(14.2)
151(5.9)
Pallet(Wood Support)
- Remove before Installation
Foundation for Installation
• Fix the unit tightly with bolts as shown below so that unit will not fall
down due to earthquake or gust.
• Use the H-beam support as a base support
• Noise and vibration may occur from the floor or wall since vibration is
transferred through the installation part depending on installation status. Thus, use anti-vibration materials (cushion pad) fully (The base
pad shall be more than 200 mm(7-7/8 inch)).
If it is necessary to prevent the unit from falling over, install as shown
in the figure.
• Prepare all 4 wires as indicated in the drawing
• Unscrew the top plate at the 4 location indicated A and B
• Put the screws through the nooses and screw them back tight
A
B
C
At least 200mm
(7-7/8 inch)
A : Location of the 2 fixation
holes on the front side of
the unit
B : Location of the 2 fixation
holes on the rear side of
the unit
C : wires
9
! CAUTION
Main cause of gas leakage is defect in flaring work. Carry out correct
flaring work in the following procedure.
• Always use a charge hose for service port connection.
• After tightening the cap, check that no refrigerant leaks are present.
• When loosening a flare nut, always use two wrenches in
combination, When connecting the piping,
always use a spanner and torque wrench
in combination to tighten the flare nut.
Union
• When connecting a flare nut, coat the
flare(inner and outer faces) with oil for
R410A(PVE) and hand tighten the nut
3 to 4 turns as the initial tightening.
Cut the pipes and the cable
- Use the accessory piping kit or the pipes purchased locally.
- Measure the distance between the indoor and the outdoor unit.
- Cut the pipes a little longer than measured distance.
- Cut the cable 1.5m longer than the pipe length.
Pipe
Copper
tube
Reamer
90
Slanted Uneven Rough
Point down
Opening shutoff valve
Burrs removal
- Completely remove all burrs from the cut cross section of pipe/tube.
- Put the end of the copper tube/pipe to downward direction as you remove burrs in order to avoid to let burrs drop in the tubing.
Handle
Bar
"A"
Bar
Yoke
Cone
hexagon wrench.
2 Turn it until the shaft stops.
Do not apply excessive force to the shutoff valve. Doing so may
break the valve body, as the valve is not a backseat type. Always
use the special tool.
3 Make sure to tighten the cap securely.
Closing shutoff valve
Copper pipe
Clamp handle
1 Remove the cap and turn the valve counter clockwise with the
1 Remove the cap and turn the valve clockwise with the hexagon wrench.
2 Securely tighten the valve until the shaft contacts the main body seal.
3 Make sure to tighten the cap securely.
Red arrow mark
* For the tightening torque, refer to the table on the below.
Flaring work
- Carry out flaring work using flaring tool as shown below.
Indoor unit
[kW(Btu/h)]
Pipe [mm(inch)]
Tightening torque
"A" [mm(inch)]
Gas
Liquid
Gas
Liquid
<5.6(19,100)
12.7(1/2)
6.35(1/4)
0.5~0.8
(0.02~0.03)
0~0.5
(0~0.02)
<16.0(54,600)
15.88(5/8)
9.52(3/8)
0.8~1.0
(0.03~0.04)
0.5~0.8
(0.02~0.03)
9.52(3/8)
1.0~1.3
(0.04~0.05)
0.5~0.8
(0.02~0.03)
<22.4(76,400)
19.05(3/4)
Shut off
valve size
[mm(inch)]
Ø6.35(1/4)
Ø9.52(3/8)
Ø12.7(1/2)
Firmly hold copper tube in a bar(or die) as indicated dimension in the
table above.
Check
- Compare the flared work with figure below.
- If flare is noted to be defective, cut off the flared section and do flaring work again.
Smooth all round
Inside is shining without scratches.
Inclined Surface Cracked Uneven
damaged
thickness
Flare shape and flare nut tightening torque
Precautions when connecting pipes
- See the following table for flare part machining dimensions.
- When connecting the flare nuts, apply refrigerant oil to the inside and
outside of the flares and turn them three or four times at first. (Use
ester oil or ether oil.)
- See the following table for tightening torque.(Applying too much torque may
cause the flares to crack.)
- After all the piping has been connected, use nitrogen to perform a
gas leak check.
Pipe size
[mm(inch)]
Tightening
Torque[N.m(lbs.ft)]
A [mm(inch)]
Flare shape
Ø9.52(3/8)
38±4(28±3.0)
12.8(0.5)~13.2(0.52)
90° ±2
Ø12.7(1/2)
55±6(41±4.4)
16.2(0.64)~16.6(0.65)
A
75±7(55±5.2)
19.3(0.76)~19.7(0.78)
Ø22.2(7/8) 30.0 ±3.0
Ø25.4(1.0) (22.1±2.2)
8mm
(0.31inch)
-
25±3.0
(18.5±2.2)
1
Use the heat insulation material for the refrigerant piping which has
an excellent heat-resistance (over 120°C).
2
Precautions in high humidity circumstance:
This air conditioner has been tested according to the "ISO Conditions with Mist" and confirmed that there is not any default. However, if it is operated for a long time in high humid atmosphere
(dew point temperature: more than 23°C), water drops are liable to
fall. In this case, add heat insulation material according to the following procedure:
- Heat insulation material to be prepared... EPDM (Ethylene Propylene Diene Methylene)-over 120°C the heat-resistance temperature.
- Add the insulation over 10mm thickness at high humidity environment.
Fastening band
(accessory)
Refrigerant piping
45
°
±2
Indoor unit
R=0.4~0.8
Ø15.88(5/8)
Ø19.05(3/4)
Insulation of shutoff valve
= Improper flaring =
Even length
all round
Ø15.88(5/8)
Tightening torque N·m(lbs·ft) (Turn clockwise to close)
Shaft(valve body)
Gas line pipCap
Service
Flare nut ing attached
port
Closed
Opened Hexagonal (Valve lid)
to unit
16±2(12±1.5)
6.0 ±0.6
17.6±2.0
(4.4±0.4)
38±4(28±3.0)
4mm (13.0±1.5)
(0.16inch) 20.0±2.0
10.0 ±1.0
55±6
(7.4±0.7)
(14.8±1.5)
(41±4.4)
12.0 ±1.2 5.0 ±0.5
12.7±2
75±7
(8.9±0.9) (3.7±0.4)
(9.4±1.5) (55±5.1)
5mm
(0.24inch)
14.0 ±1.4
25.0±2.5
110±10
(10.3±1.0)
(18.4±1.8)
(81.1±7.4)
Thermal insulator
(accessory)
ENGLISH
Preparation of Piping
10
! CAUTION
Pipe must be able to obtain the specified thickness and should be
used with low impurities.
Also when handling storage, pipe must be careful to prevent a fracture, deformity and wound.
Should not be mixed with contaminations such as dust, moisture.
Refrigerant piping on three principles
Drying
Should be no moisture
inside
Items
Cleanliness
Airtight
No dust inside.
There is no refrigerant
leakage
Dust
Moisture
Leakage
- Significant hydrolysis of refrigerant oil
- Degradation of refrigerant oil
Cause - Poor insula’tion of
failure the compressor
- Do not cold and
warm
- Clogging of EEV,
Capillary
- Degradation of refrigerant oil
- Poor insulation of
the compressor
- Do not cold and
warm
- Clogging of EEV,
Capillary
- Gas shortages
- Degradation of refrigerant oil
- Poor insulation of
the compressor
- Do not cold and
warm
- No moisture in the pipe
- Until the connection is completed,
the plumbing pipe
entrance should be
strictly controlled.
- Stop plumbing at
rainy day.
Coun- - Pipe entrance
termea- should be taken
side or bottom.
sure
- When removal burr
after cutting pipe, pipe
entrance should be
taken down.
- Pipe entrance
should be fitted cap
when pass through
the walls.
- No dust in the pipe.
- Until the connection is completed,
the plumbing pipe
entrance should be
strictly controlled.
- Pipe entrance
should be taken
side or bottom.
- When removal burr
after cutting pipe,
pipe entrance
should be taken
down.
- Pipe entrance
should be fitted cap
when pass through
the walls.
- Airtightness test
should be.
- Brazing operations
to comply with
standards.
- Flare to comply
with standards.
- Flange connections
to comply with
standards.
Welding, as when heating without nitrogen substitution a large
amount of the oxide film is formed on the internal piping.
The oxide film is a caused by clogging EEV, Capillary, oil hole of accumulator and suction hole of oil pump in compressor.
It prevents normal operation of the compressor.
In order to avoid this problem, Welding should be done after replacing
air by nitrogen gas.
When welding plumbing pipe, the work is required.
Regulator
Precautions on Pipe connection / Valve operation
Pipe connection is done by connecting from the end of the pipe to the
branching pipes, and the refrigerant pipe coming out of the outdoor
unit is divided at the end to connect to each indoor unit. Flare connection for the indoor unit, and welding connection for the outdoor pipe
and the branching parts.
- Use hexagonal wrench to open/close the valve.
Refrigerant
Charging Port
Auxiliary valve
• Always careful not to leak the refrigerant during welding.
• The refrigerant generates poisonous gas harmful to human body
if combusted.
• Do not perform welding in a closed space.
• Be sure to close the cap of the service port to prevent gas leakage after the work.
Please block the pipe knock outs of the front and side panels after
installing the pipes.
(Animals or foreign objects may be brought in to damage wires.)
Nitrogen gas Pressure
0.02MPa(2.9psi) less
Oxide scale
! WARNING
! CAUTION
Welding Point
Taping
(Should not
contain air)
REFRIGERANT PIPING INSTALLATION
Gas pipe
Nitrogen substitution method
Note) should not block the outlet side.
When the internal pressure in pipe is abo
ve the atmospheric pressure, pinhole is o
ccurred and it is a leakage cause.
1 Always use the nitrogen.(not use oxygen, carbon dioxide, and
a Chevron gas): Please use the following nitrogen pressure
0.02MPa(2.9psi) Oxygen – Promotes oxidative degradation of
refrigerant oil. Because it is flammable, it is strictly prohibited
to use Carbon dioxide – Degrade the drying characteristics of
gas Chevron Gas – Toxic gas occurs when exposed to direct
flame.
2 Always use a pressure reducing valve.
3 Please do not use commercially available antioxidant.
The residual material seems to be the oxide scale is observed. In fact, due to the organic acids generated by oxidation of the alcohol contained in the anti-oxidants, ants nest
corrosion occurs. (causes of organic acid ’ alcohol + copper
+ water + temperature)
Liquid pipe
Nitrogen
ENGLISH
Plumbing materials and storage methods
11
- Pipe connections can be done on the front side or on the side according to the installation environments.
- Be sure to let 0.2kgf/cm2(0.284lbs/in2) Nitrogen flow in the pipe when
welding.
- If Nitrogen was not flown during welding, many oxidized membranes
may form inside the pipe and disturb the normal operations of valves
and condensers.
Regulator
Refrigerant Pipe
Service Port
Refrigerant
Charging Port
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Leakage Prevention Cap
Nitrogen
Direction
Taping
Valve
Pipe Drawing Out during Single / Series connection
Nitrogen
Rear Side Pipe
Draw Out
Front Pipe
Draw Out
Method of drawing out pipes on the front side and right side
- Proceed with the pipe work as shown in the below figure for front
side and right side pipe drawing out.
Right Side Pipe
Draw Out
Bottom Side Pipe
Draw Out
Preparation Work
- Use Knock Outs of Base Pan of the outdoor unit for Left/Right or
Bottom pipe drawing outs.
Pipe Knock Out for
Liquid/Gas pipes
Method of drawing out pipes on the rear side
- Proceed with the pipe work as shown in the below figure for rear
side pie drawing out.
Wet towel
<Liquid pipe> <Gas pipe>
Removal Area for Liquid/Gas pipe
bottom side connections.
Pipe Knock Out for Liquid/Gas pipes
! CAUTION
• Do not give damage to the pipe/base during the Knock Out
work.
• Proceed to pipe work after removing burr after Knock Out work.
• Perform sleeve work to prevent damage to the wire when connecting wires using knock Outs.
Remove leakage prevention cap
• Remove the leakage prevention cap attached to the outdoor unit
service valve before pipe work.
• Proceed the leakage prevention cap removal as follows:
- Verify whether the liquid/gas pipes are locked.
- Extract remaining refrigerant or air inside using the service port.
- Remove the leakage prevention cap
※Pictures may differ depending on the model.
ENGLISH
PIPE CONNECTIONS BETWEEN
INDOOR AND OUTDOOR UNIT
12
Refrigerant piping system
Y branch method
Outdoor unit
Gas pipe
Example : 5 Indoor Units
connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
Liquid pipe
Main pipe
[Unit:m(ft)]
Branching
pipe
L150 (492)
H50 (164)
ENGLISH
Selection of Refrigerant Piping
l 40 (131)
h15(49)
Branching
pipe
Total pipe length = A+B+C+D+a+b+c+d+e ≤ 300m(984ft)
Indoor unit
L
Piping parts
Name
A+B+C+D+e ≤ 175m(574ft)
B+C+D+e ≤ 40m(131ft)
Difference in height (Outdoor Unit ÷ Indoor Unit)
H
H ≤ 50m(164ft)(40m(131ft) : Outdoor Unit is lower than Indoor Units)
Difference in height (Indoor Unit ÷ Indoor Unit)
h
① Main pipe
② Branching pipe
③ Indoor unit connecting pipe
Equivalent pipe length(*)
A+B+C+D+e ≤ 150m(492ft)
Longest pipe length after 1st branch
l
① Outdoor unit ’ 1st branching section
② Branching section ’ Branching section
③ Branching section ’ Indoor unit
Longest pipe length
h ≤ 15m(49ft)
• * : Assume equivalent pipe length of Y branch to be 0.5m(1.6ft),
that of header to be 1m(3,3ft), calculation purpose
① Size of main pipe
Outdoor unit
capacity[HP]
4
5
6
Liquid pipe
[mm(inch)]
Ø9.52(3/8)
Ø9.52(3/8)
Ø9.52(3/8)
Gas pipe
[mm(inch)]
Ø15.88(5/8)
Ø15.88(5/8)
Ø19.05(3/4)
② Pipe size of between branching sections
Selection
of
pipe size
Indoor unit capacity
[kW(Btu/h)]
≤ 5.6(19,100)
< 16.0(54,600)
< 22.4(76,400)
< 36.4(124,200)
Liquid pipe
[mm(inch)]
Ø6.35(1/4)
Ø9.52(3/8)
Ø9.52(3/8)
Ø9.52(3/8)
Gas pipe
[mm(inch)]
Ø12.7(1/2)
Ø15.88(5/8)
Ø19.05(3/4)
Ø22.2(7/8)
③ Connecting pipe size of indoor unit
Indoor unit capacity
[kW(Btu/h)]
≤ 5.6(19,100)
< 16.0(54,600)
≤ 22.4(76,400)
≤ 28.0(95,900)
Liquid pipe
[mm(inch)]
Ø6.35(1/4)
Ø9.52(3/8)
Ø9.52(3/8)
Ø9.52(3/8)
Gas pipe
[mm(inch)]
Ø12.7(1/2)
Ø15.88(5/8)
Ø19.05(3/4)
Ø22.2(7/8)
Refrigerant pipe diameter from outdoor unit to first branch. (A)
Outdoor unit
total capacity (HP)
Liquid pipe [mm(inch)]
Gas pipe [mm(inch)]
4
5
6
Ø9.52(3/8)
Ø9.52(3/8)
Ø9.52(3/8)
Ø15.88(5/8)
Ø15.88(5/8)
Ø19.05(3/4)
Refrigerant pipe diameter from branch to branch (B,C,D)
Downward Indoor
Unit total capacity
[kW(Btu/h)]
≤ 5.6(19,100)
< 16.0(54,600)
≤ 22.4(76,400)
< 36.4(124,200)
Liquid pipe [mm(inch)]
Gas pipe [mm(inch)]
Ø6.35(1/4)
Ø9.52(3/8)
Ø9.52(3/8)
Ø9.52(3/8)
Ø12.7(1/2)
Ø15.88(5/8)
Ø19.05(3/4)
Ø22.2(7/8)
! WARNING
When the any one (or both ) of below conditions are satisfied, the
diameter of main pipe (A) must be increased according to below
table.
- The equivalent length between outdoor unit and the farthest indoor unit is 90m or more
(Liquid and Gas pipes are increased)
- The level difference (Outdoor unit ÷ Indoor unit) is 50m or more
(Only liquid pipe is increased)
13
! WARNING
[Unit:m(ft)]
• It is recommended that difference of piping length for pipes
connected to the Indoor Unit is minimized. Performance difference between Indoor Units may occur.
• When the any one (or both ) of below conditions are satisfied,
the diameter of main pipe (A) must be increased according to
below table.
- The equivalent length between outdoor unit and the farthest
indoor unit is 90m or more (Liquid and Gas pipes are increased)
L150 (492)
H50 (164)
Example : 6 Indoor Units
connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch
Ⓒ : Indoor Units
Ⓓ : Sealed piping
40 (131)
h15(49)
Total pipe length = A+a+b+c+d+e+f ≤ 300m(984ft)
L
l
H
h
Refrigerant pipe diameter from outdoor unit to first branch. (A)
Longest pipe length
Equivalent pipe length(*)
A+f ≤ 150m(492ft)
A+f ≤ 175m(574ft)
Longest pipe length after 1st branch
f ≤ 40m(131ft)
Difference in height (Outdoor Unit ÷ Indoor Unit)
Combination of Y
branch/header Method
Ø9.52(3/8)
Ø9.52(3/8)
Ø9.52(3/8)
Ø15.88(5/8)
Ø15.88(5/8)
Ø19.05(3/4)
h15(49)
Branch pipe can not be used after header
Total pipe length = A+B+C+a+b+c+d+e ≤ 300m(984ft)
Longest pipe length
Equivalent pipe length(*)
A+B+b ≤ 150m(492ft)
A+B+b ≤ 175m(574ft)
Longest pipe length after 1st branch
B+b ≤ 40m(131ft)
Difference in height (Outdoor Unit ÷ Indoor Unit)
H ≤ 50m(164ft) (40m(131ft) : Outdoor Unit is lower than Indoor Units)
Difference in height (Indoor Unit ÷ Indoor Unit)
h ≤ 15m(49ft)
• * : Assume equivalent pipe length of Y branch to be 0.5m(1.6ft),
that of header to be 1m(3.3ft), calculation purpose
• Indoor Unit should be installed at lower position than the header.
Gas pipe [mm(inch)]
Ø6.35(1/4)
Ø9.52(3/8)
Ø9.52(3/8)
Ø9.52(3/8)
Ø12.7(1/2)
Ø15.88(5/8)
Ø19.05(3/4)
Ø22.2(7/8)
! WARNING
L150 (492)
40 (131)
Liquid pipe [mm(inch)]
Outdoor unit Connection
[Unit:m(ft)]
H50 (164)
Example : 5 Indoor Units
connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Header
Ⓕ : Sealed piping
h
4
5
6
Downward Indoor
Unit total capacity
[kW(Btu/h)]
≤ 5.6(19,100)
< 16.0(54,600)
≤ 22.4(76,400)
< 36.4(124,200)
• * : Assume equivalent pipe length of Y branch to be 0.5m(1.6ft),
that of header to be 1m(3.3ft), calculation purpose
• Indoor Unit should be installed at lower position than the header.
H
Gas pipe [mm(inch)]
Refrigerant pipe diameter from branch to branch (B,C)
h ≤ 15m(49ft)
Pipe length after header branching (a~f)
It is recommended that difference in length of the pipes connected to the Indoor Units is minimized. Performance difference
between Indoor Units may occur.
l
Liquid pipe [mm(inch)]
H ≤ 50m(164ft)(40m(131ft) : Outdoor Unit is lower than Indoor Units)
Difference in height (Indoor Unit ÷ Indoor Unit)
! WARNING
L
Outdoor unit
total capacity(HP)
• In case of pipe diameter B connected after first branch is bigger
than the main pipe diameter A, B should be of the same size
with A.
Ex) In case indoor unit combination ratio 120% is connected to
24HP(67.2 kW) outdoor unit.
1) Outdoor unit main pipe diameter A : Ø34.9(Gas pipe),
Ø15.88(liquid pipe)
2) Pipe diameter B after first branch according to 120% indoor
unit ombination(80.6kW) : Ø34.9(gas pipe), Ø19.05(liquid
pipe)
Therefore, pipe diameter B connected after first branch
would be Ø34.9(gas pipe) / Ø15.88(liquid pipe) which is
same with main pipe diameter.
[Example]
Do not choose the main pipe diameter by downward indoor unit
total capacity but its outdoor unit model name.
Do not let the connection pipe from branch to branch exceed the
main pipe diameter chosen by outdoor unit model name.
EX) Where connecting the indoor units to the 22 HP (61.6 kW)
outdoor unit to 130% of its system capacity (80.1 kW) and
branching 7k (2.2kW) indoor unit at the 1st branch.
1) Main pipe diameter(22 HP outdoor unit): Ø28.58(gas pipe),
Ø15.88(Liquid pipe)
2) Pipe diameter between 1st and 2nd branch (77.9kW indoor
units) :
Ø34.9(Gas pipe), Ø19.05(Liquid pipe) in conformity with
downward indoor units.
Since the main pipe diameter of 22HP outdoor unit is
Ø28.58(gas pipe), Ø15.88(Liquid pipe) is used as the main
pipe and the connection pipe between 1st and 2nd branch.
ENGLISH
Header Method
14
ENGLISH
Indoor Unit Connection
! WARNING
• Regulation for refrigerant leakage
: the amount of refrigerant leakage should satisfy the following
equation for human safety.
Indoor Unit connecting pipe from branch (a,b,c,d,e,f)
Indoor Unit capacity
[kW(Btu/h)]
≤ 5.6(19,100)
< 16.0(54,600)
< 22.4(76,400)
< 28.0(95,900)
Liquid pipe
[mm(inch)]
Gas pipe [mm(inch)]
Ø6.35(1/4)
Ø9.52(3/8)
Ø9.52(3/8)
Ø9.52(3/8)
Total amount of refrigerant in the system
Ø12.7(1/2)
Ø15.88(5/8)
Ø19.05(3/4)
Ø22.2(7/8)
! CAUTION
• Bending radius should be
at least twice the diameter
of the pipe.
• Bend pipe after
500mm(1.64ft) or more
from branch(or header).
Do not bend U type.
It may cause Performance
unsatisfactory or noise.
500mm(1.64ft)
or more
500mm(1.64ft)
or more
Volume of the room at which Indoor Unit of
the least capacity is installed
≤0.44kg/m3
(0.028lbs/ft3)
If the above equation can not be satisfied, then follow the following steps.
• Selection of air conditioning system: select one of the next
- Installation of effective opening part
- Reconfirmation of Outdoor Unit capacity and piping length
- Reduction of the amount of refrigerant
- Installation of 2 or more security device (alarm for gas leakage)
• Change Indoor Unit type
: installation position should be over 2m from the floor (Wall
mounted type ’ Cassette type)
• Adoption of ventilation system
: choose ordinary ventilation system or building ventilation system
• Limitation in piping work
: Prepare for earthquake and thermal stress
Refrigerant charging
The amount of Refrigerant
The calculation of the additional charge should take into account the
length of pipe and CF(correction Factor) value of indoor unit.
Additional charge(kg)
=
Total liquid pipe : Ø25.4 mm (1.0 inch)
x 0.480 kg/m (0.323 lbs/ft)
+
Total liquid pipe : Ø22.2 mm (7/8 inch)
x 0.354 kg/m (0.238 lbs/ft)
+
Total liquid pipe : Ø19.05 mm (3/4 inch)
x 0.266 kg/m (0.179 lbs/ft)
+
Total liquid pipe : Ø15.88 mm (5/8 inch)
x 0.173 kg/m (0.116 lbs/ft)
+
Total liquid pipe : Ø12.7 mm (1/2inch)
x 0.118 kg/m (0.079 lbs/ft)
+
Total liquid pipe : Ø9.52 mm (3/8inch)
x 0.061 kg/m (0.041 lbs/ft)
+
Total liquid pipe : Ø6.35 mm (1/4 inch)
x 0.022 kg/m (0.015 lbs/ft)
+
CF value of indoor unit
Ⓐ Manifold Gauge
Ⓑ Low pressure side Handle
Ⓒ High pressure side Handle
Liquid pipe
Amount refrigerant of Indoor units
Example) 4Way Ceiling Cassette 14.5kW -1ea, Ceiling concealed
Duct 7.3kW-2ea, Wall Mounted 2.3kW-4ea
CF = 0.64 × 1 + 0.26 × 2 + 0.24 × 4 = 2.12kg(4.67lbs)
Attach the additional refrigerant table of IDU.
Gas pipe
! WARNING
• Pipe to be vacuumed : gas pipe, liquid pipe
• If the refrigerant amount is not exact, it may not operate
properly.
• If additionally bottled refrigerant amount is over 10%, condenser
burst or insufficient indoor unit performance may be caused.
! CAUTION
Do not connect Hydrokit with Multi V S Models.
15
Branch pipe Fitting
Horizontal Distribution
Y branch
B
A
2nd
1st
3rd main pipe distribution
Ⓐ To Branch Piping or Indoor Unit
Ⓑ To Outdoor Unit
• Ensure that the branch pipes are attached horizontally or vertically
(see the diagram below.)
Facing
downwards
Horizontal
plane
1st
2nd
3rd
Facing
upwards
Within +/- 10°
A
Viewed from point A
in direction of arrow
1st
2nd
3rd
1st
Main pipe
Distribution
Within ±3°
3nd
Main pipe
Distribution
Vertical Distribution
Within ±3°
• There is no limitation on the joint mounting configuration.
• If the diameter of the refrigerant piping selected by the procedures
described is different from the size of the joint, the connecting section should be cut with a pipe cutter.
• Branch pipe should be insulated with the insulator in each kit.
- Ensure that the branch pipes are attached vertically.
Tape
(field supply)
Liquid and gas
pipe joints
Insulator
(included with kit)
Insulator for
field piping
Header
A
Ⓐ To Outdoor Unit
Ⓑ To Indoor Unit
• The indoor unit having larger capacity must be installed closer
to Ⓐ than smaller one.
• If the diameter of the refrigerant
piping selected by the procedures described is different
from the size of the joint, the
connecting section should be
cut with a pipe cutter.
B
C
ⓒ Pipe cutter
• When the number of pipes to be
connected is smaller than the
number of header branches, install a cap to the unconnected
branches.
The others
• When the number of indoor units to be connected to the branch
pipes is less than the number of branch pipes available for connection then cap pipes should be fitted to the surplus branches.
B
Pinched pipe
• Fit branch pipe lie in a horizontal plane.
Header
Horizontal plane
View from point B in the direction of the arrow
ENGLISH
Distribution Method
16
Header
[Unit:mm(inch)]
Models
Insulate the header using
the insulation
material attached to the
branch pipe kit
as shown in the figure.
Gas pipe
Liquid pipe
360(14-5/32)
360(14-5/32)
ID12.7(1/2)
4 branch
ARBL054
120(4-23/32)
120(4-23/32)
ID6.35(1/4)
ID6.35(1/4)
ID12.7(1/2)
150
ID15.88(5/8) 120
(4-23/32) (5-29/32)
ID15.88(5/8)
ID19.05(3/4)
ID9.52(3/8)
ID9.52(3/8)
ID12.7(1/2)
ID15.88(5/8)
120(4-23/32)
7 branch
ARBL057
ID6.35(1/4)
ID12.7(1/2)
150
120
(4-23/32) (5-29/32)
ID15.88(5/8)
ID15.88(5/8)
ID19.05(3/4)
ID12.7(1/2)
ID12.7(1/2)
ID12.7(1/2)
ID15.88(5/8)
ID12.7(1/2)
ID15.88(5/8)
ID12.7(1/2)
ID15.88(5/8)
ID12.7(1/2)
ID15.88(5/8)
ID15.88(5/8)
ID15.88(5/8)
4 branch
ARBL104
Insulator
ID9.52(3/8)
120(4-23/32)
ID12.7(1/2)
• Joints between branch and pipe should be sealed with the tape included in each kit.
Tape
150
120
(4-23/32) (5-29/32)
540(21-1/4)
540(21-1/4)
ID12.7(1/2)
ID12.7(1/2)
ID12.7(1/2)
ID15.88(5/8)
ID12.7(1/2)
ID15.88(5/8)
ID12.7(1/2)
ID15.88(5/8)
ID12.7(1/2)
ID15.88(5/8)
ID15.88(5/8)
ID15.88(5/8)
ID15.88(5/8)
ID12.7(1/2)
ID15.88(5/8)
ID6.35(1/4)
ID6.35(1/4)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID9.52(3/8)
ID9.52(3/8)
160(6-5/16)
ID19.05(3/4)
150
120
(4-23/32) (5-29/32)
ID9.52(3/8)
400(15-23/32)
150
120
(4-23/32) (5-29/32)
ID9.52(3/8)
ID6.35(1/4)
360(14-5/32)
ID6.35(1/4)
120(4-23/32)
ID6.35(1/4)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
150
ID9.52(3/8) 120
ID6.35(1/4)
ID9.52(3/8)
(4-23/32) (5-29/32)
ID9.52(3/8)
ID9.52(3/8)
ID28.58(1-1/8) ID25.4(1) ID22.2(7/8)
ID12.7(1/2)
ID9.52(3/8)
Insulator of field pipe
580(22-27/32)
700(27-9/16)
160(6-5/16)
• Any cap pipe should be insulated using the insulator provided with
each kit and then taped as described above.
7 branch
ARBL107
ID15.88(5/8)
ID12.7(1/2)
ID19.05(3/4)
ID15.88(5/8)
150
120
(4-23/32) (5-29/32)
ID28.58(1-1/8) ID25.4(1) ID22.2(7/8)
ID6.35(1/4)
ID6.35(1/4)
ID6.35(1/4)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID9.52(3/8)
ID6.35(1/4)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID9.52(3/8)
120(4-23/32)
ID6.35(1/4)
150
120
(4-23/32) (5-29/32)
ID9.52(3/8)
ID12.7(1/2)
ID9.52(3/8)
Insulator for cap pipe
760(29-28/32)
720(28-11/32)
160(6-5/16)
Cap pipe
Tape
120(4-23/32)
ID15.88(5/8)
10 branch
ARBL1010
ID12.7(1/2)
150
ID19.05(3/4) 120
(4-23/32) (5-29/32)
ID15.88(5/8)
ID6.35(1/4)
ID6.35(1/4)
150
120
(4-23/32) (5-29/32)
ID9.52(3/8)
ID28.58(1-1/8) ID25.4(1) ID22.2(7/8)
Y branch pipe
[Unit:mm(inch)]
ID9.52(3/8) ID12.7(1/2) ID9.52(3/8)
775(30-17/32)
700(27-9/16)
182(7-5/32)
Models
Gas pipe
Liquid pipe
I.D6.35(1/4)
I.D12.7(1/2)
I.D15.88(5/8)
I.D12.7(1/2)
I.D15.88(5/8)
ARBLN
01621
I.D9.52(3/8)
150
120
(4-23/32) (5-29/32)
ID28.58(1-1/8) ID25.4(1) ID22.2(7/8)
74
(2-29/32)
I.D6.35(1/4)
I.D9.52(3/8)
74
(2-29/32)
I.D15.88(5/8)
I.D12.7(1/2)
I.D6.35(1/4)
ID19.05(3/4)
ID15.88(5/8)
1
ID6.35(1/4)
ID6.35(1/4)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID6.35(1/4)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID6.35(1/4)
ID9.52(3/8)
ID9.52(3/8)
ID9.52(3/8)
ID9.52(3/8)
ID9.52(3/8)
107(4-7/32)
ID6.35(1/4)
150
120
(4-23/32) (5-29/32)
ID9.52(3/8) ID12.7(1/2) ID9.52(3/8)
281(11-1/16)
292(11-1/2)
281(11-1/16)
292(11-1/2)
I.D19.05(3/4)
I.D9.52(3/8)
10 branch
ARBL2010
60*9=540(21-1/2)
ID15.88(5/8)
ID12.7(1/2)
1
O.D9.52(3/8)
I.D12.7(1/2) 70(2-3/4)
O.D15.88(5/8)
70(2-3/4)
I.D19.05(3/4) I.D15.88(5/8) I.D19.05(3/4) I.D12.7(1/2)
I.D9.52(3/8)
I.D19.05(3/4) I.D12.7
83
I.D15.88(5/8)
(1/2) (3-9/32)
I.D25.4(1)
390(15-11/32)
413(16-1/4)
I.D22.2(7/8)
I.D28.58(1-1/8)
O.D25.4(1) O.D19.05(3/4)
3
1
110(4-11/32)
I.D19.05(3/4)
I.D22.2(7/8) I.D15.88(5/8)
I.D28.58(1-1/8)
I.D15.88(5/8) I.D12.7
I.D19.05(3/4)
(1/2)
ARBLN
07121
2
1
I.D15.88(5/8) I.D12.7(1/2)
I.D19.05(3/4)
I.D19.05(3/4)
I.D28.58(1-1/8)
3
O.D12.7(1/2) I.D9.52(3/8)
O.D12.7(1/2) I.D9.52(3/8) I.D6.35(1/4)
2
120(4-23/32)
I.D34.9(1-3/8)
I.D38.1(1-1/2) I.D28.58(1-1/8)
2
I.D41.3(1-5/8)
I.D28.58(1-1/8) I.D22.2
125
I.D34.9(1-3/8)
(7/8) (4-29/32)
I.D38.1(1-1/2)
83
(3-9/32)
3
371(14-19/32)
394(15-1/2)
3
90(3-17/32)
I.D34.9
(1-3/8)
110(4-11/32)
70(2-3/4)
1
I.D15.88(5/8) I.D12.7
(1/2)
I.D19.05(3/4)
I.D22.2(7/8)
41616-3/8)
444(17-15/32)
70(2-3/4)
I.D.53.98(2-1/4)
2
110(4-11/32)
I.D.25.4(1)
I.D22.2(7/8) I.D19.05(3/4)
I.D.25.4(1) I.D22.2(7/8)
100(3-15/16)
I.D19.05(3/4)
3
Liquid side
2
I.D.25.4(1) I.D19.05
(3/4)
I.D22.2(7/8)
3
I.D.34.9(1-3/8) I.D31.8(1-1/4)
I.D.53.98(2-1/4)
I.D.25.4(1)
I.D.28.58(1-1/8) O.D.44.48(1-3/4)
I.D22.2(7/8)
O.D.38.1(1-1/2)
O.D.28.58(1-1/8)
2 3
X2 2 3
X2
3
70(2-3/4)
80(3-5/32)
I.D.44.48(1-3/4)
134
I.D38.1(1-1/2) (5-17/32)
420(16-17/32)
490(19-9/32)
O.D15.88(5/8)
Close
Close
3
I.D.44.48(1-3/4)
I.D41.3(1-5/8) I.D38.1(1-1/2)
I.D41.3(1-5/8)
175(6-7/8)
I.D12.7(1/2)
3
110(4-11/32)
Nitrogen gas
cylinder
Close
120(4-23/32)
1
I.D.44.48(1-3/4)
3
Master outdoor unit
Close
3
I.D12.7(1/2)
O.D19.05(3/4)
I.D9.52(3/8)
I.D22.2(7/8) O.D12.7(1/2) I.D6.35(1/4)
O.D15.88(5/8) I.D9.52(3/8)
2
Slave 1 outdoor unit
96
(3-25/32)
3
2
I.D41.3
3
(1-5/8)
O.D22.2
130(5-1/8)
120(4-23/32)
90(3-17/32)
(7/8)
I.D12.7(1/2)
O.D28.58(1-1/8) I.D22.2(7/8)
3
I.D19.05(3/4)
2
Leak test
Leak test should be made by pressurizing nitrogen gas to 3.8
MPa(551.1psi). If the pressure does not drop for 24 hours, the system
passes the test. If the pressure drops, check where the nitrogen leaks.
For the test method, refer to the following figure. (Make a test with
the service valves closed. Be also sure to pressurize liquid pipe, gas
pipe and high/low pressure common pipe)
The test result can be judged good if the pressure has not be reduced
after leaving for about one day after completion of nitrogen gas pressurization.
I.D19.05(3/4)
I.D22.2(7/8) I.D15.88(5/8)
2
I.D15.88(5/8) I.D19.05(3/4)
471(18-17/32)
3
517(20-11/32)
I.D15.88(5/8) I.D41.3(1-5/8)
I.D38.1(1-1/2)
I.D19.05(3/4)
O.D38.1(1-1/2) O.D34.9(1-3/8)
O.D15.88(5/8)
ARBLN
23220
2
96
(3-25/32)
376(14-13/16)
3
404(15-29/32)
I.D31.8(1-1/4)
O.D31.8(1-1/4)
I.D28.58(1-1/8)
O.D19.05(3/4) I.D22.2(7/8)
I.D34.9(1-3/8)
O.D22.2
120(4-23/32)
(7/8)
ARBLN
14521
I.D19.05(3/4)
I.D15.88(5/8) I.D12.7(1/2)
I.D12.7(1/2) I.D15.88(5/8)
2
1
I.D31.8(1-1/4)
321(12-5/8)
332(13-1/16)
I.D25.4(1)
2
80(3-5/32)
70(2-3/4)
Leak Test and Vacuum drying
115(4-17/32)
I.D15.88(5/8)
O.D22.2(7/8) 120(4-23/32)
346(13-5/8)
379(14-29/32)
Gas pipe
O.D19.05(3/4) I.D22.2(7/8)
I.D12.7(1/2)
74
I.D9.52(3/8)
I.D6.35(1/4) (2-29/32)
I.D12.7(1/2)
3
Liquide pipe
ARBLN
03321
I.D12.7(1/2)
I.D9.52(3/8) I.D6.35(1/4)
2
1
Gas pipe
I.D22.2(7/8)
Liquide pipe
ENGLISH
• Header should be insulated with the insulator in each kit.
Indoor unit
96
(3-25/32)
3
Gas side
I.D15.88(5/8)
O.D19.05(3/4)
I.D12.7(1/2)
X2
2 3
110(4-11/32)
I.D9.52(3/8)
O.D12.7(1/2)
I.D6.35(1/4)
3
110(4-11/32)
17
! WARNING
Use a vacuum pump or Inert(nitrogen) gas when doing leakage test
or air purge. Do not compress air or Oxygen and do not use Flammable gases. Otherwise, it may cause fire or explosion.
- There is the risk of death, injury, fire or explosion.
!
Use a vacuum pump or Inert(nitrogen) gas when doing leakage test
or air purge. Do not compress air or Oxygen and do not use Flammable gases. Otherwise, it may cause fire or explosion.
- There is the risk of death, injury, fire or explosion.
!
NOTE
If the ambient temperature differs between the time when pressure is applied
and when the pressure drop is checked, apply the following correction factor
There is a pressure change of approximately 0.01Mpa(1.5psi) for each 33.8°F
of temperature difference.
Correction = (Temp. at the time of pressurization – Temp. at the time of
check) X 0.1
For example: Temperature at the time of pressurization
3.8MPa(551psi) is 80.6°F
24 hour later : 3.73MPa(541psi), 68°F
In this case the pressure drop of 0.07MPa(10psi) is
because of temperature drop
And hence there is no leakage in pipe occurred.
NOTE
Always add an appropriate amount of refrigerant. (For the refrigerant additional charge)
Too much or too little refrigerant will cause trouble.
To use the Vacuum Mode
(If the Vacuum mode is set, all valves of Indoor units and Outdoor units will
be opened.)
! WARNING
When installing and moving the air conditioner to another site,
recharge after perfect evacuation.
- If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be
damaged.
! CAUTION
To prevent the nitrogen from entering the refrigeration system in
the liquid state, the top of the cylinder must be at higher position
than the bottom when you pressurize the system.
Usually the cylinder is used in a vertical standing position.
Vacuum Mode
This function is used for creating vacuum in the system after compressor replacement, ODU parts replacement or IDU addition/replacement.
Vacuum mode setting method
Vacuum
Vacuum drying should be made from the service port provided on the outdoor
unit’s service valve to the vacuum pump commonly used for liquid pipe, gas
pipe and high/low pressure common pipe. (Make Vacuum from liquid pipe, gas
pipe and high/low pressure common pipe with the service valve closed.)
* Never perform air purging using refrigerant.
• Vacuum drying: Use a vacuum pump that can evacuate to -100.7kPa
(-14.6psi, 5Torr, -755mmHg).
- Evacuate the system from the liquid and gas pipes with a vacuum
pump for over 2 hrs and bring the system to -100.7kPa(-14.6psi).
After maintaining system under that condition for over 1 hr, confirm
the vacuum gauge rises. The system may contain moisture or leak.
- Following should be executed if there is a possibility of moisture remaining inside the pipe.
(Rainwater may enter the pipe during work in the rainy season or over
a long period of time)
After evacuating the system for 2 hrs, give pressure to the system to
0.05MPa(7.3psi)(vacuum break) with nitrogen gas and then evacuate
it again with the vacuum pump for 1hr to -100.7kPa(-14.6psi)(vacuum
drying). If the system cannot be evacuated to -100.7kPa(-14.6psi)
within 2 hrs, repeat the steps of vacuum break and its drying. Finally,
check if the vacuum gauge does not rise or not, after maintaining the
system in vacuum for 1 hr.
Slave 1 outdoor unit
SW04C ( X : cancel)
SW03C ( ȯ : forward)
SW02C (ȭ : backward
SW01C (Ɨ : confirm)
SW01D (reset)
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“SVC” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Se3” Push the ‘●’ button
Start the vacuum mode : “VACC”
ODU V/V open
ODU EEV open
IDU EEV open
Close
Close
Vacuum mode off method
Gas pipe
Gas pipe
Liquide pipe
Close
Close
Liquide pipe
7-Segment
Master outdoor unit
Vacuum
pump
Scale
Use a graviometer. (One that can
measure down to 0.1kg(0.22lbs)).
If you are unable to prepare such a
high-precision gravimeter you may use
a charge cylinder.
DIP SWITCH
Dip switch off and push the reset button on Master unit PCB
Liquid side
Indoor unit
Gas side
! CAUTION
ODU operation stops during vacuum mode. Compressor can't
operate.
ENGLISH
! WARNING
18
ENGLISH
Thermal insulation of refrigerant piping
Be sure to give insulation work to refrigerant piping by covering liquid
pipe and gas pipe separately with enough thickness heat-resistant polyethylene, so that no gap is observed in the joint between indoor unit
and insulating material, and insulating materials themselves. When insulation work is insufficient, there is a possibility of condensation drip,
etc. Pay special attention to insulation work to ceiling plenum.
Heat insulation Adhesive + Heat - resistant polymaterial
ethylene foam + Adhesive tape
Indoor
Vinyl tape
Floor
exWater-proof
hemp cloth +
Outer
posed
Bronze asphalt
covering
hemp cloth +
Outdoor Water-proof
Zinc plate + Oily paint
Ⓐ Heat insulation material
Ⓑ Pipe
Ⓒ Outer covering(Wind the connection part and cutting part of heat insulation material with a finishing tape.)
!
NOTE
When using polyethylene cover as covering material, asphalt roofing shall not be required.
Bad example
• Do not insulate gas or low pressure pipe and liquid or highpressure pipe together.
B
F
A
C
D
E
Ⓐ Liquid pipe
Ⓑ Gas pipe
ⓒ Power lines
ⓓ Finishing tape
ⓔ Insulating material
ⓕ Communication lines
Penetrations
Inner wall (concealed)
Outer wall
C
A
Outer wall (exposed)
D
E
B
A
B
B
I
Floor (fireproofing)
Penetrating portion on fire
limit and boundary wall
D
Roof pipe shaft
I
F
J
G
D
B
G
H
B
A
1m
1m
Ⓐ Sleeve
Ⓑ Heat insulating material
Ⓒ Lagging
Ⓓ Caulking material
Ⓔ Band
Ⓕ Waterproofing layer
Ⓖ Sleeve with edge
Ⓗ Lagging material
Ⓘ Mortar or other incombustible caulking
Ⓙ Incombustible heat insulation material
When filling a gap with mortar, cover the penetration part with steel plate so
that the insulation material will not be caved in. For this part, use incombustible materials for both insulation and covering. (Vinyl covering should not
be used.)
ELECTRICAL WIRING
Caution
- Follow ordinance of your governmental organization for technical
standard related to electrical equipment, wiring regulations and guidance of each electric power company.
• Be sure to fully insulate connecting portion.
A
! WARNING
Be sure to have authorized electrical engineers do the electric
work using special circuits in accordance with regulations and this
installation manual.
If power supply circuit has a lack of capacity or electric work deficiency, it may cause an electric shock or fire.
Ⓐ These parts are not insulated.
Good example
C
Power lines
D
Communication lines
D
A
B
E
Separation
Ⓐ Liquid pipe
Ⓑ Gas pipe
ⓒ Power lines
ⓓ Insulating material
ⓔ Communication lines
- Install the Outdoor Unit communication cable away from the power
source wiring so that it is not affected by electric noise from the power
source. (Do not run it through the same conduit.)
- Be sure to provide designated grounding work to Outdoor Unit.
! CAUTION
Be sure to correct the outdoor unit to earth. Do not connect ground
wire to any gas pipe, liquid pipe, lightening rod or telephone earth
line. If earth is incomplete, it may cause an electric shock.
- Give some allowance to wiring for electrical part box of Indoor and
Outdoor Units, because the box is sometimes removed at the time of
service work.
- Never connect the main power source to terminal block of communication cable. If connected, electrical parts will be burnt out.
- Use 2-core shield cable for communication cable.( mark in the figure below) If communication cable of different systems are wired
with the same multiplecore cable, the resultant poor transmitting and
receiving will cause erroneous operations. (
mark in the figure
below)
- Only the communication cable specified should be connected to the
terminal block for Outdoor Unit communication.
19
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
Outdoor Unit
Indoor
Unit
Indoor
Unit
Remote
control
- Remove all of the screws at side panel and remove the panel by
pulling it forward.
- Connect communication cables between outdoor unit and indoor
units through the terminal block.
- When the central control system is connected to the outdoor unit, a
dedicated PCB must be connected between them.
- When connecting communication cable between outdoor unit and indoor units with shielded cable, connect the shield ground to the earth
screw.
Remote
control
2-Core Shield Cable
Side panel
Outdoor Unit
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
! WARNING
Outdoor Unit
Indoor
Unit
The temperature sensor for outdoor air should not be exposed to
direct sunlight.
- Provide an appropriate cover to intercept direct sunlight.
Indoor
Unit
Remote
control
Remote
control
Multi-Core Cable
PI485 PCB
! CAUTION
(Inside the control box)
(Inside the control box)
• Use the 2-core shield cables for communication cables. Never use
them together with power cables.
• The conductive shielding layer of cable should be grounded to the
metal part of both units.
• Never use multi-core cable
• As this unit is equipped with an inverter, to install a phase leading
capacitor not only will deteriorate power factor improvement effect,
but also may cause capacitor abnormal heating. Therefore, never install a phase leading capacitor.
• Make sure that the power unbalance ratio is not greater than 2%.
If it is greater the units lifespan will be reduced.
Indoor communication PCB
Main PCB
Terminal block
(Take care of the phase
sequence of 3-phase
4-wire power system)
Precautions when laying power wiring
Use round pressure terminals for connections to the power terminal
block.
Round pressure terminal
Power cable
When none are available, follow the instructions below.
- Do not connect wiring of different thicknesses to the power terminal
block. (Slack in the power wiring may cause abnormal heat.)
- When connecting cable which is the same thickness, do as shown in
the figure below.
- For wiring, use the designated power cable and connect firmly, then
secure to prevent outside pressure being exerted on the terminal
block.
- Use an appropriate screwdriver for tightening the terinal screws. A
screwdriver with a small head will strip the head and make proper
tighterning impossible.
- Over-tightening the terminal screws may break them.
4HP/5HP/6HP
※Pictures may differ depending on the model.
ENGLISH
Control box and connecting position of wiring
Outdoor Unit
20
ENGLISH
Communication and Power Cables
Communication cable
- Types : shielding cable
- Cross section : 1.0~1.5mm2 (1.55x10-3~2.32x10-3 in2)
- Maximum allowable temperature: 140°F
- Maximum allowable cable length: under 1,000m(3,281ft)
Remote control cable
- Types : 3-core cable
Central control cable
Product type
ACP
AC Smart
AC Ez
Cable type
2-core cable
(Shielding cable)
2-core cable
(Shielding cable)
4-core cable
(Shielding cable)
Diameter
1.0~1.5mm2
(1.55x10-3~2.32x10-3 in2)
1.0~1.5mm2
(1.55x10-3~2.32x10-3 in2)
1.0~1.5mm2
(1.55x10-3~2.32x10-3 in2)
Separation of communication and power cables
- If communication and power cables are run alongside each other then
there is a strong likelihood of operational faults developing due to interference in the signal wiring caused by electrostatic and electromagnetic coupling.
The tables below indicates our recommendation as to appropriate
spacing of communication and power cables where these are to be
run side by side
Current capacity of power cable
10A
50A
100V or more
100A
Exceed 100A
!
Spacing
300m(11-13/16 inch)
500m(19-11/16 inch)
1,000m(39-3/8 inch)
1,500m(59-1/16 inch)
Wiring of main power supply and equipment
capacity
- Use a separate power supply for the Outdoor Unit and Indoor Unit.
- Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections.
- The cable size is the minimum value for metal conduit wiring. The
power cord size should be 1 rank thicker taking into account the line
voltage drops. Make sure the power-supply voltage does not drop
more than 10%.
- Specific wiring requirements should adhere to the wiring regulations
of the region.
- Power supply cords of parts of appliances for outdoor use should not
be lighter than polychloroprene sheathed flexible cord.
- Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
! WARNING
• Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations
and guidance of each electric power company.
• Make sure to use specified cables for connections so that no
external force is imparted to terminal connections. If connections are not fixed firmly, it may cause heating or fire.
• Make sure to use the appropriate type of overcurrent protection
switch. Note that generated overcurrent may include some
amount of direct current.
! CAUTION
• Some installation site may require attachment of an earth leakage
breaker. If no earth leakage breaker is installed, it may cause an
electric shock.
• Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or copper wire with too large capacity
may cause a malfunction of unit or fire.
NOTE
• The figures are based on assumed length of parallel cabling up
to 100m(328ft). For length in excess of 100m(328ft) the figures
will have to be recalculated in direct proportion to the additional
length of cable involved.
• If the power supply waveform continues to exhibit some distortion the recommended spacing in the table should be increased.
- If the cable are laid inside conduits then the following point
must also be taken into account when grouping various cable
together for introduction into the conduits
- Power cable(including power supply to air conditioner) and
communication cables must not be laid inside the same
- In the same way, when grouping the power wires and communication cables should not be bunched together.
Field Wiring
Single outdoor unit
: Single phase of power supply line(L, N)
: Communication line (3 line): Wired remote control
Single Phase 3wires
(L1,L2,GND)
Power supply
208/230V, 60Hz
Power supply switch
(Switch fuse : ELCB)
: Communication line (2 shield line):
Between Indoor Unit and Outdoor Unit
Pull Box(Installer Option)
(Main Switch)
Power supply switch
(Switch fuse)
Power supply
1 Phase
208/230V, 60Hz
! CAUTION
If apparatus is not properly earthed then there is always a risk of
electric shocks, the earthing of the apparatus must be carried out by
a qualified person.
! WARNING
• Indoor Unit ground wires are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect
and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
• Install the main switch that can interrupt all the power sources in an
integrated manner because this system consists of the equipment
utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase, momentary blackout or the power goes on and off while the product is
operating, attach a reversed phase protection circuit locally. Running the product in reversed phase may break the compressor and
other parts.
21
Installation of IO Module(optional)
[BUS type]
- Connection of communication
cable must be installed like
below figure between indoor
unit to outdoor unit.
① Assemble IO Module and bracket.
② Fix the bracket on designated location with two clamp
cords(105mm).
③ Connect the connection wires according to the instructions.
(Please refer to Setting and Using Method)
[STAR type]
- Abnormal operation can be
caused by communication defect, when connection of communication cable is installed like
below figure(STAR type).
+
Example) Connection of power and communication cable
4HP / 5HP / 6HP
+
Right side
Front side
※Pictures may differ depending on the model.
- About more information of IO Module, please refer to IO Module
manual.
Main power
Terminal
block
Insulation
sleeves
attachment
Hold Communication
cable
Ground wire
Power/
Ground
cable
Fix firmly
not to be
displaced
! CAUTION
Be sure to turn off outdoor unit power before installation.
ODU-IDU
Communication cable
Hold power
cable
Checking the setting of outdoor units
A
Checking according to dip switch setting
- You can check the setting values of the Master outdoor unit from the
7 segment LED.
The dip switch setting should be changed when the power is OFF.
Power/
Ground cable
Communication
cable
Over
50mm
gap
Communication
cable
Fix firmly
not to be
displaced
View A
Communication
cable
Power/
Ground cable
Over
50mm gap
Checking the initial display
The number is sequentially appeared at the 7 segment in 5 seconds
after applying the power. This number represents the setting condition. (For example, represents R410A 10HP)
• Initial display order
Order
①
②
③
④
No
4~12
1
2
38
46
22
1
5
6
Note
Model capacity
Cooling only
Heat pump
380V
460V
220V
Standard
Cold temperature area
Tropical
• Example) ARUN100LSS0
①
②
③
④
10
2
38
1
ENGLISH
Example) Connection of transmission wire
22
Mode
The address of indoor units would be set by Automatic Addressing
- Wait for 3 minutes after supplying power.
(Master and Slave outdoor units, indoor units)
- Press RED button of the outdoor units for 5 seconds. (SW01C)
- A “88” is indicated on 7-segment LED of the outdoor unit PCB.
- For completing addressing, 2~7 minutes are required depending on
numbers of connected indoor units
- Numbers of connected indoor units whose addressing is completed are
indicated for 30 seconds on 7-segment LED of the outdoor unit PCB
- After completing addressing, address of each indoor unit is indicated
on the wired remote control display window. (CH01, CH02,
CH03, ……, CH06 : Indicated as numbers of connected indoor units)
Content Display1
Installation
ENGLISH
Automatic Addressing
Function
Content
Option
Display2
Content
Value
Action
Display3 Content Display4 Implement Display5
Remarks
Cool & Heat
Selector
Selected
oFF op1~
op2 the option
-
-
Change
the set Blank Save in
EEPROM
value
Static pressure compensation
Selected
oFF op1~
op3 the option
-
-
Change
the set Blank Save in
EEPROM
value
Night low
noise
Selected
oFF op1~o
p12 the option
-
-
Change
the set Blank Save in
EEPROM
value
ODU
address
-
-
0~255
set Change
the the set Blank Save in
EEPROM
value value
Snow removal &
rapid defrost
Selected
oFF op1~
op3 the option
-
-
Change
the set Blank Save in
EEPROM
value
Target
pressure
adjusting
Selected
oFF op1~
op3 the option
-
-
Change
the set Blank Save in
EEPROM
value
[Heat Pump (MAIN PCB)]
* Functions save in EEPROM will be kept continuously, though the
system power was reset.
* Dip switch 3 can be OFF except when installing the only 4 series indoor units (named ARNU***4).
DIP-SWITCH 7 - Segment
SW04C ( : cancel)
SW03C (ඖ: forward)
Group Number setting
SW02C (ඔ: backward)
SW01C (̻: confirm)
SW01D (reset)
! CAUTION
• In replacement of the indoor unit PCB, always perform Automatic
addressing setting again (At that time, please check about using
Independent power module to any indoor unit.)
• If power supply is not applied to the indoor unit, operation error
occur.
• Automatic Addressing is only possible on the master Unit.
• Automatic Addressing has to be performed after 3 minutes to improve communication.
Group Number setting for Indoor Units
- Confirm the power of whole system(Indoor Unit, Outdoor Unit) is
OFF, otherwise turn off.
- The communication cables connected to CEN.A and CEN.B terminal
should be connected to central control of Outdoor Unit with care for
their polarity (A-A, B-B ).
- Turn the whole system on.
- Set the group and Indoor Unit number with a wired remote control.
- To control several sets of Indoor Units into a group, set the group ID
from 0 to F for this purpose.
Outdoor Units (External PCB)
The Procedure of Automatic Addressing
SODU.B SODU.A
IDU.B
IDU.A
CEN.B
CEN.A
DRY1
DRY2
GND
Power On
Waiting 3 minutes
B(D)
A(C)
Press RED Button for 5 sec.
(SW01C)
Example) Group number setting
Automatic addressing start
7-segment LED
= 88
1 F
Group Indoor unit
Don’t press RED Button
(SW01C)
• Automatic addressing setting end
Numbers of indoor unit connection set whose
addressing is completed are indicated for 30seconds
on 7-segment LED after completing setting
Waiting about 2~7 minutes
7-segment LED
= 88
YES
OK
NO
Check the connections
of communication cable
Indoor address number is displayed on wired remote control or
indoor unit display window. It is not an error message, will
disappeared when on/off button is pressed on remote control
ex) Display of 01, 02, ..., 15 means connection of 15 indoor units
and Automatic addressing is completed normally.
Setting the function
Select the mode/function/option/value using ‘▶’, ‘◀’ Button and confirm that using the ‘●’ button after dip switch No.5 is turned on.
DIP-SW01 7 - Segment
SW04C ( : cancel)
SW03C (ඖ: forward)
SW02C (ඔ: backward)
SW01C (̻: confirm)
SW01D (reset)
1st number indicate the group number
2nd number point out indoor unit number
Group recognizing the central controller
No.0 group (00~0F)
No.1 group (10~1F)
No.2 group (20~2F)
No.3 group (30~3F)
No.4 group (40~4F)
No.5 group (50~5F)
No.6 group (60~6F)
No.7 group (70~7F)
No.8 group (80~8F)
No.9 group (90~9F)
No. A group (A0~AF)
No. B group (B0~BF)
No. C group (C0~CF)
No. D group (D0~DF)
No. E group (E0~EF)
No. F group (F0~FF)
12V
23
Night Low Noise Function
Mode setting method
In cooling mode, this function makes the ODU fan operate at low RPM
to reduce the fan noise of ODU at night which has low cooling load.
Master unit PCB DIP switch on : No.5
Night low noise function setting method
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Master unit PCB DIP switch on : No.5
Select the Function using ‘▶’, ‘◀’ Button :
“Fn1” Push the ‘●’ button
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1”,“op2” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn3” Push the ‘●’ button
Cool & Heat Selection mode is set
Select the Option using ‘▶’, ‘◀’ Button :
“op1~op15” Push the ‘●’ button
Function setting
Switch control
Switch(Phase) Switch(Bottom)
oFF
Right
Left
Not operate
Right
Right
Not operate
Left
Not operate
Left side
Function
op1(mode)
Cooling
Heating
Fan mode
Start the Night low noise function :
Save the selected option value in EEPROM
op2(mode)
Cooling
Heating
Off
Right side
Switch (Phase)
Switch (Bottom)
! CAUTION
• Ask an authorized technician to setting a function.
• If do not use a function, set an off-mode.
• If use a function, first install a Cool & Heat selector.
Static pressure compensation mode
This function secures the air flow rate of ODU, in case static pressure
has been applied like using duct at fan discharge of ODU.
Time Settings
Step
op1
op2
op3
op4
op5
op6
op7
op8
op9
op10
op11
op12
op13
op14
op15
Judgement Time(Hr)
Operation Time(Hr)
8
9
6.5
10.5
5
12
8
9
6.5
10.5
5
12
8
9
6.5
10.5
5
12
continuous operation
continuous operation
continuous operation
6.5
10.5
6.5
10.5
6.5
10.5
! CAUTION
• Request installer to set the function during installation.
• If ODU RPM changes, cooling capacity may go down.
Static pressure compensation mode setting method
Setting the ODU address
Master unit PCB DIP switch on : No.5
Mode setting method
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Master unit PCB DIP switch on : No.5
Select the Function using ‘▶’, ‘◀’ Button :
“Fn2” Push the ‘●’ button
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“op1~op3” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn5” Push the ‘●’ button
Start the Static pressure compensation mode :
Save the selected option value in EEPROM
Select the Option using ‘▶’, ‘◀’ Button :
“0” ~ “255” Push the ‘●’ button
FAN Maximum RPM of each step
ARUN053GSS4
ARUN048GSS4
ARUN038GSS4
Model
Max.RPM
Standard
800
OP1
850
OP2
850
ODU address is set
! CAUTION
• Ask an authorized technician to setting a function.
• If use a function, first install a Central controller.
ENGLISH
Cool & Heat selector
24
ENGLISH
Snow removal & rapid defrost
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn6” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1” ~ “op3” Push the ‘●’ button
Mode is set
Mode setting
setting
oFF
op1
op2
op3
Mode
Not setting
Snow removal mode
Rapid defrost mode
Snow removal mode. + Rapid defrost mode.
! CAUTION
• Ask an authorized technician to setting a function.
• If do not use a function, set an off-mode.
Target pressure adjusting
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn8” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“HEAT” , “COOL” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“op1” ~ “op4” Push the ‘●’ button
Target pressure is set
Setting
Mode
Purpose
Heat
op1 Increase capacity
op2
op3
op4
Decrease power
consumption
Decrease power
consumption
Decrease power
consumption
Cool
Condensing Evaporating
temperature temperature
variation
variation
Increase capacity
+2 °C
-3 °C
Increase capacity
-2 °C
-1.5 °C
-4 °C
+2.5 °C
-6 °C
-4.5 °C
Decrease power
consumption
Decrease power
consumption
! CAUTION
• Ask an authorized technician to setting a function.
• If do not use a function, set an off-mode.
• Change a power consumption or capacity.
25
Error Indicator
- This function indicates types of failure in self-diagnosis and occurrence of failure for air condition.
- Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of outdoor unit control board as
shown in the table.
- If more than two troubles occur simultaneously, lower number of error code is first displayed.
- After error occurrence, if error is released, error LED is also released simultaneously.
Error Display
1st,2nd,3rd LED of 7-segment indicates error number, 4th LED indicates unit number.
Ex)
Repeat
Error No. of Unit
Error No. of Compressor
Error No.
* Refer to the Indoor manual for some Indoor Error code.
Outdoor unit related error
Indoor unit related error
Display
Title
Cause of Error
0
1
-
Air temperature sensor of indoor unit
Air temperature sensor of indoor unit is open or short
0
2
-
Inlet pipe temperature sensor of indoor unit
Inlet pipe temperature sensor of indoor unit is open or short
0
3
-
Communication error : wired remote controller ÷ indoor unit
Failing to receive wired remote controller signal in indoor unit PCB
0
4
-
Drain pump
Malfunction of drain pump
0
5
-
Communication error : outdoor unit ÷ indoor unit
Failing to receive outdoor unit signal in indoor unit PCB
0
6
-
Outlet pipe temperature sensor of indoor unit
Outlet pipe temperature sensor of indoor unit is open or short
0
9
-
Indoor EEPROM Error
In case when the serial number marked on EEPROM of Indoor unit is 0 or
FFFFFF
1
0
-
Poor fan motor operation
Disconnecting the fan motor connector/Failure of indoor fan motor lock
2
1
1
Outdoor Unit Inverter Compressor IPM Fault
Outdoor Unit Inverter Compressor Drive IPM Fault
2
2
1
Inverter Board Input Over Current(RMS) of Outdoor
Unit
Outdoor Unit Inverter Board Input Current excess (RMS)
2
3
1
Outdoor Unit Inverter Compressor DC link Low Voltage
DC charging is not performed at Outdoor Unit after starting relay turn on.
2
4
1
Outdoor Unit High Pressure Switch
System is turned off by Outdoor Unit high pressure switch.
2
5
1
Outdoor Unit Input Voltage High/ Low Voltage
Outdoor Unit input voltage is over 487V or below 270V
2
6
1
Outdoor Unit Inverter Compressor Start Failure
The First Start Failure by Outdoor Unit Inverter Compressor Abnormality
2
9
1
Outdoor Unit Inverter Compressor Over Current
Outdoor Unit Inverter Compressor Fault OR Drive Fault
3
2
1
Outdoor Unit Inverter Compressor1 High Discharge
Temperature
Outdoor Unit Inverter Compressor1 High Discharge Temperature
3
4
1
High Pressure of Outdoor Unit
High Pressure of Outdoor Unit
3
5
1
Low Pressure of Outdoor Unit
Low Pressure of Outdoor Unit
3
6
1
Outdoor Unit Low Compression Ratio Limited
Outdoor Unit Low Compression Ratio Limited
4
0
1
Outdoor Unit Inverter Compressor CT Sensor Fault
Outdoor Unit Inverter Compressor CT Sensor open or short
4
1
1
Outdoor Unit Inverter Compressor1 Discharge Temperature Sensor Fault
Outdoor Unit Inverter Compressor Discharge Temperature Sensor open or
short
4
2
1
Outdoor Unit Low Pressure Sensor Fault
Outdoor Unit Low Pressure Sensor open or short
4
3
1
Outdoor Unit High Pressure Sensor Fault
Outdoor Unit High Pressure Sensor open or short
4
4
1
Outdoor Unit Air Temperature Sensor Fault
Outdoor Unit Air Temperature Sensor open or short
4
5
1
Outdoor Unit Heat Exchanger Temperature Sensor
(Front side) Fault
Outdoor Unit Heat Exchanger Temperature Sensor(Front side) open or
short
4
6
1
Outdoor Unit Suction Temperature Sensor Fault
Outdoor Unit Suction Temperature Sensor open or short
ENGLISH
Self-Diagnosis Function
26
ENGLISH
Outdoor unit related error
Display
Title
Cause of Error
5
0
1
Omitting connection of R, S, T power of Outdoor Unit
Omitting connection of outdoor unit
5
1
1
Excessive capacity of indoor units
Excessive connection of indoor units compared to capacity of Outdoor Unit
5
2
1
Communication error : inverter PCB ’ Main PCB
Failing to receive inverter signal at main PCB of Outdoor Unit
5
3
1
Communication error : indoor unit ’ Main PCB of Outdoor Unit
Failing to receive indoor unit signal at main PCB of Outdoor Unit.
5
7
1
Communication error : Main PCB ’ inverter PCB
Failing to receive signal main PCB at inverter PCB of Outdoor Unit
6
0
1
Inverter PCB EEPROM Error of Master Outdoor Unit
Access Error of Inverter PCB of Outdoor Unit
6
2
1
Outdoor Unit Inverter Heatsink High Temperature
System is turned off by Outdoor Unit Inverter Heatsink High Temperature
6
5
1
Outdoor Unit Inverter Heatsink Temperature Sensor
Fault
Outdoor Unit Inverter Heatsink Temperature Sensor open or short
6
7
1
Outdoor Unit Fan Lock
Restriction of Outdoor Unit
7
1
1
Converter CT Sensor Error of Outdoor Unit
Converter CT Sensor open or short of Outdoor Unit
8
6
1
Outdoor Unit Main PCB EEPROM Error
Communication Fail Between Outdoor Unit Main MICOM and EEPROM or omitting EEPROM
Outdoor Unit Liquid pipe Temperature Sensor Error
Liquid pipe temperature sensor of Outdoor Unit is open or short
1
1
3
1
1
1
5
1
1
5
1
1
1
0
4
*
1
0
5
1
0
1
Outdoor Unit Subcooling Outlet Temperature Sensor
Error
Failure of operation mode conversion at Outdoor Unit
Outdoor Unit
Communication Error Between Master Outdoor Unit
and Other Outdoor Unit
Failing to receive Slave Unit signal at main PCB of Master Outdoor
Unit
*
Master Outdoor Unit Fan PCB Communication Error
Failing to receive fan signal at main PCB of Master unit.
6
*
Master Outdoor Unit FAN IPM Fault Error
Instant Over Current at Master Outdoor Unit Fan IPM
0
7
*
Master Outdoor Unit Fan DC Link Low Voltage Error
Master Outdoor Unit Fan DC Link Input Voltage is under 380V
1
1
3
*
Liquid pipe temperature sensor of Master Outdoor Unit is open or
short
1
1
4
*
1
1
5
*
Master Outdoor Unit Liquid pipe Temperature Sensor
Error
Master Outdoor Unit Subcooling Inlet Temperature
Sensor Error
Master Outdoor Unit Subcooling Outlet Temperature
Sensor Error
1
1
6
*
Master Outdoor Unit Oil Level Sensor Error
Oil Level Sensor of Master Outdoor Unit is open or short
1
4
5
*
Master outdoor unit Main Board - External Board communication
Error
1
5
1
*
1
5
3
*
1
5
4
*
1
8
2
*
Master outdoor unit Main Board - External Board communication Error
Failure of operation mode conversion at Master Outdoor Unit
Master Outdoor Unit Heat Exchanger Temperature
Sensor (upper part) Fault
Master Outdoor Unit Heat Exchanger Temperature
Sensor (lower part) Fault
Master outdoor unit External Board Main-Sub Micom
communication Error
1
9
3
*
Master Outdoor Unit Fan Heatsink High Temperature
1
9
4
*
Master Outdoor Unit Fan Heatsink Temperature Sensor
Fault
Outdoor Unit Subcooling Outlet Temperature Sensor Error
Failure of operation mode conversion at Outdoor Unit
Master Outdoor Unit Subcooling Inlet Temperature Sensor Error
Master Outdoor Unit Subcooling Outlet Temperature Sensor Error
Failure of operation mode conversion at Master Outdoor Unit
Master Outdoor Unit Heat Exchanger Temperature Sensor (upper
part) Fault
Master Outdoor Unit Heat Exchanger Temperature Sensor(lower part)
open or short
Master Outdoor Unit Main Board Main-Sub Micom communication
failed
System is turned off by Master Outdoor Unit Fan Heatsink High Temperature
Master Outdoor Unit Fan Heatsink Temperature Sensor open or short
27
- With partition and without opening which serve as passage of air to
adjoining room
Outdoor unit
The installer and system specialist shall secure safety against leakage
according to local regulations or standards.
The following standards may be applicable if local regulations are not
available.
Introduction
Indoor unit
Though the R410A refrigerant is harmless and incombustible itself ,
the room to equip the air conditioner should be large to such an extent
that the refrigerant gas will not exceed the limiting concentration even
if the refrigerant gas leaks in the room.
Limiting concentration
Smallest
room
Calculate refrigerant concentration
Limiting concentration is the limit of Freon gas concentration
where immediate measures can be taken without hurting human
body when refrigerant leaks in the air. The limiting concentration
shall be described in the unit of Kg/m3(lbs/ft3) (Freon gas weight
per unit air volume) for facilitating calculation.
Limiting concentration: 0.44kg/m3(0.028lbs/ft3)(R410A)
Total amount of replenishedrefrigerant
in refrigerant facility [kg(lbs)]
= Refrigerant concentration[Kg/m3(lbs/ft3)]
Capacity of smallest room
whereindoor unit is installed [m3(ft3)]
(R410A)
- In case the result of calculation exceeds the limiting concentration, perform
the same calculations by shifting to the second smallest, and the third smallest rooms until at last the result is below the limiting concentration.
Outdoor unit
(No.1 system)
Flow of
refrigerant
Indoor unit
Room where refrigerant leaks
(Refrigerant of the whole No.1
system flows out.)
Checking procedure of limiting concentration
Check limiting concentration along following steps and take appropriate measure depending on the situation.
In case the concentration exceeds the limit
When the concentration exceeds the limit, change original plan or take
one of the countermeasures shown below:
• Countermeasure 1
Provide opening for ventilation.
Provide 0.15% or more opening to floor space both above and below
door, or provide opening without door.
• Countermeasure 2
Provide gas leak alarm linked with mechanical ventilator.
Reducing the outdoor refrigerant qty.
Calculate amount of all the replenished refrigerant (kg) per each refrigerant system.
Countermeasure 2
Amount of replenished
refrigerant per one outdoor +
unit system
Amount of additional = Total amount of replenished
replenished refrigerant refrigerant in refrigerant
facility [kg(lbs)]
Amount of replenished
refrigerant at factory shipment
Amount of additionally
replenished refrigerant
depending on piping
length or piping
diameter at customer
Note : In case one refrigerant facility is
divided into 2 or more refrigerant
systems and each system is
independent, amount of replenished
refrigerant of each system shall be
adopted.
Gas leak alarm
Mechanical ventilator
Indoor unit
Calculate minimum room capacity
Calculate room capacity by regarding a portion as one room or the
smaller room.
- Without partition
- With partition and with opening
which serve as passage of air to
adjoining room
Outdoor unit
Countermeasure 1 Opening effective to ventilation
Outdoor unit
Pay a special attention to the place, such as a basement, etc.
where refrigerant can stay, since refrigerant is heavier than air.
Indoor unit
Indoor unit
Opening
Partition
In the case of opening
without door , or 0.15
% or more openings
(to floor space) both
above and below door)
ENGLISH
CAUTION FOR REFRIGERANT LEAK
28
ENGLISH
INSTALLATION GUIDE AT THE
SEASIDE
Model Designation
Product information
• Product Name : Air conditioner
• Model Name :
! CAUTION
• Air conditioners should not be installed in areas where
corrosive gases, such as acid or alkaline gas, are produced.
• Do not install the product where it could be exposed to sea
wind (salty wind) directly. It can result corrosion on the
product. Corrosion, particularly on the condenser and
evaporator fins, could cause product malfunction or inefficient
performance.
• If outdoor unit is installed close to the seaside, it should avoid
direct exposure to the sea wind. Otherwise it needs additional
anticorrosion treatment on the heat exchanger.
Product Sales Name
Model Factory Name
ARUx***ySSz
x = N(Heat Pump), V (Cooling only)
y = L (3Ø, 380-415 V, 50 Hz),
G(1Ø, 220-240 V, 50 Hz)
z = Numeric; (Series Number)
*** = Numeric; (Cooling capacity)
• Additional information : Serial number is refer to the bar code on the
product.
Selecting the location(Outdoor Unit)
If the outdoor unit is to be installed close to the seaside, direct exposure to the sea wind should be avoided. Install the outdoor unit on the
opposite side of the sea wind direction.
Airborne Noise Emission
The A-weighted sound pressure emitted by this product is below 70
dB.
** The noise level can vary depending on the site.
Sea wind
The figures quoted are emission level and are not necessarily safe
working levels.
Whilst there is a correlation between the emission and exposure levels, this cannot be used reliably to determine whether or not further
precautions are required.
Factor that influence the actual level of exposure of the workforce include the characteristics of the work room and the other sources of
noise, i.e. the number of equipment and other adjacent processes and
the length of time for which an operator exposed to the noise. Also,
the permissible exposure level can vary from country to country.
Sea wind
In case, to install the outdoor unit on the seaside, set up a windbreak
not to be exposed to the sea wind.
Windbreak
Sea wind
- It should be strong enough like concrete to prevent the sea wind
from the sea.
- The height and width should be more than 150% of the outdoor unit.
- It should be keep more than 70 cm (2.3ft) of space between outdoor
unit and the windbreak for easy air flow.
Select a well-drained place.
• Periodic ( more than once/year ) cleaning of the dust or salt
particles stuck on the heat exchanger by using water
This information, however, will enable the user of the equipment to
make a better evaluation of the hazard and risk.
US
1. Please call the installing contractor of your product, as warranty service will be provided by them.
2. If you have service issues that have not been addressed by the contractor, please call 1-888-865-3026.
CANADA Service call Number # : (888) LG Canada, (888) 542-2623
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