Test Run ...............................................................................................................................85
New Function ....................................................................................................................111
Caution For Refrigerant Leak...........................................................................................120
Installation guide at the seaside......................................................................................122
2Outdoor Unit2Outdoor Unit
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions
must be followed.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
nMeanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
n 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.
ENGLISH
Always ground the product.
• There is risk of 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 store or use flammable gas or
combustibles near the air conditioner.
• There is risk of fire or failure of product.
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.
Always intstall a dedicated circuit and breaker.
• Improper wiring or installation may cause fire or
electric shock.
Do not install, remove, or re-install the unit
by yourself (customer).
• There is risk of fire, electric shock, explosion, or
injury.
Use the correctly rated breaker or fuse.
• There is risk of fire or electric shock.
Do not install the product on a defective
installation stand.
• It may cause injury, accident, or damage to the
product.
Installation Manual 3
Safety Precautions
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.
Ventilate before operating air conditioner
when gas leaked out.
• It may cause explosion, fire, and burn.
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.
n Operation
Do not damage or use an unspecified power
cord.
• There is risk of fire, electric shock, explosion, or
injury.
Be cautious that water could not enter the
product.
• There is risk of fire, electric shock, or product
damage.
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.
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.
Use a dedicated outlet for this appliance.
• There is risk of fire or electrical shock.
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.
Take care to ensure that nobody could step
on or fall onto the outdoor unit.
• This could result in personal injury and product
damage.
n Installation
Always check for gas (refrigerant) leakage
after installation or repair of product.
• Low refrigerant levels may cause failure of
product.
4Outdoor Unit4Outdoor Unit
Be cautious not to touch the sharp edges
when installing.
• It may cause injury.
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.
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.
Safety Precautions
Keep level even when installing the product.
• To avoid vibration or water leakage.
Use power cables of sufficient current
carrying capacity and rating.
• Cables that are too small may leak, generate
heat, and cause a fire.
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.
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.
Do not install the unit where combustible
gas may leak.
• If the gas leaks and accumulates around the
unit, an explosion may result.
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.
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.
ENGLISH
n 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.
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.
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.
Do not block the inlet or outlet.
• It may cause failure of appliance or accident.
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.
Installation Manual 5
Safety Precautions
Be very careful about product transportation.
• Only one person should not carry the product if it weighs more than 20 kg.
• 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.
Do not touch any of the refrigerant piping
during and after operation.
• It can cause a burn or frostbite.
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.
Use a firm stool or ladder when cleaning or
maintaining the air conditioner.
• Be careful and avoid personal injury.
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 operate the air conditioner with the
panels or guards removed.
• Rotating, hot, or high-voltage parts can cause
injuries.
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.
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.
6Outdoor Unit6Outdoor Unit
Installation Process
Installation Process
Determination of division work
Preparation of contract drawings
Sleeve and insert work
Installation of indoor unit
Refrigerant piping work
Drain pipe work
Duct work
Heat insulation work
Electrical work
(connection circuits and drive circuits)
Airtight test
Vacuum drying
Additional charge of refrigerant
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
Check model name to make
sure the fitting is made correctly
Special attention to dryness,
cleanness and tightness
Adjust to downward gradient
Make sure airflow is sufficient
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
Recharge correctly as calculated in this manual. and record the amount of added refrigerant
Outdoor unit foundation work
Installation of outdoor unit
The foundation must be level even
Avoid short circuits and ensure
sufficient space is allowed for service
ENGLISH
Fit facing panels
Automatic addressing of indoor unit
Test run adjustment
Transfer to customer with explanation
Make sure there are no gaps left between the facing materials used on the ceiling
Refer to automatic addressing flowchart
Preheat the crank case with the electrical heater for more than 6 hours.
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
• 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 wall thickness of the piping should comply with the relevant local and national regulations for the designed pressure
3.8MPa.
• 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.)
Installation Manual 7
Outdoor units Information
Outdoor units Information
nCombination Ration(50~200%)
Outdoor Number Connection Capacity
Single outdoor units 200%
Double outdoor units 160%
Triple outdoor units 130%
Notes: * We can guarantee the operation only within 130% Combination.
If you want to connect more than 130% combination, please contact us and discuss the
requirement like below.
1) If the operation of indoor unit is more than 130%, the airflow is operated as low in the all
indoor units.
2) The number of () means the number of Max. connectable indoor units, when the connected
capacity of indoor units is in the table above.
Power Supply: Outdoor Unit (3Ø, 380 - 415V, 50Hz/3Ø, 380V, 60Hz)
nHeat pump
Unit
System(HP)
Model
Product Charge kg
Max. Connectable No. of Indoor Units
Net Weight kg
lbs
Dimensions (WxHxD) mm
inch
Connecting Pipes Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
418 x 1 529 x 1 529 x 1
(920 x 1,680 x 760) x 1 (920 x 1,680 x 760) x 1 (920 x 1,680 x 760) x 1
(36.2 x 66.1 x 29.9) x 1 (36.2 x 66.1 x 29.9) x 1 (36.2 x 66.1 x 29.9) x 1
9.52(3/8) 9.52(3/8) 12.7(1/2)
19.05(3/4) 22.2(7/8) 28.58(1 1/8)
1 Outdoor unit
Unit
System(HP)
Model
Product Charge kg
Max. Connectable No. of Indoor Units
Net Weight kg
lbs
Dimensions (WxHxD) mm
inch
Connecting Pipes Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
260 x 1 260 x 1 315 x 1 325 x 1
573 x 1 573 x 1 694 x 1 716 x 1
(1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1
(48.8 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 1 (36.2 x 66.1 x 29.9) x 1
(1,240 x 1,680 x 760) x 2 (1,240 x 1,680 x 760) x 2 (1,240 x 1,680 x 760) x 2 (1,240 x 1,680 x 760) x 2
(48.8 x 66.1 x 29.9) x 2 (48.8 x 66.1 x 29.9) x 2 (48.8 x 66.1 x 29.9) x 2 (48.8 x 66.1 x 29.9) x 2
(1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3
(48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3
19.05(3/4) 19.05(3/4) 19.05(3/4) 19.05(3/4)
41.3(1 5/8) 41.3(1 5/8) 41.3(1 5/8) 41.3(1 5/8)
2 Outdoor Unit 3 Outdoor Unit
21.0 21.0 21.5 23.0
64 64 64 64
2 Outdoor Unit
(920 × 1,680 × 760) × 1 (920 × 1,680 × 760) × 1
(36.2 × 66.1 × 29.9) × 1 (36.2 × 66.1 × 29.9) × 1
3 Outdoor Unit
Installation Manual 9
Outdoor Units Information
Unit
System(HP)
Model
Product Charge kg
Max. Connectable No. of Indoor Units
Net Weight kg
lbs
Dimensions (WxHxD) mm
inch
Connecting Pipes Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
573 × 1 + 716 × 2 573 × 1 + 716 × 2 694 × 1 + 716 × 2 716× 3
(1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3
(48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3
19.05(3/4) 19.05(3/4) 19.05(3/4) 19.05(3/4)
41.3(1 5/8) 41.3(1 5/8) 41.3(1 5/8) 41.3(1 5/8)
Unit
System(HP)
Model
Product Charge kg
Max. Connectable No. of Indoor Units
Net Weight kg
lbs
Dimensions (WxHxD) mm
inch
Connecting Pipes Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
Unit
System(HP)
Model
Product Charge kg
Max. Connectable No. of Indoor Units
Net Weight kg
lbs
Dimensions (WxHxD) mm
inch
Connecting Pipes Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
Unit
System(HP)
Model
Product Charge kg
Max. Connectable No. of Indoor Units
Net Weight kg
lbs
Dimensions (WxHxD) mm
inch
Connecting Pipes Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
573 × 4 573 × 4 573 × 3 + 694 × 1 573×2 + 694×2
(1,240 x 1,680 x 760) x 4 (1,240 x 1,680 x 760) x 4 (1,240 x 1,680 x 760) x 4 (1,240 x 1,680 x 760) x 4
(48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4
341 x 1 341 x 1 408 x 1 518 x 1
(620 x 1,680 x 760) x 1 (620 x 1,680 x 760) x 1 (920 x 1,680 x 760) x 1 (920 x 1,680 x 760) x 1
(24.4 x 66.1 x 29.9) x 1 (24.4 x 66.1 x 29.9) x 1 (36.2 x 66.1 x 29.9) x 1 (36.2 x 66.1 x 29.9) x 1
9.52(3/8) 9.52(3/8) 9.52(3/8) 12.7(1/2)
19.05(3/4) 19.05(3/4) 22.2(7/8) 28.58(1 1/8)
10(12) 13(20) 16(25) 20(30)
1 Outdoor unit
4.0 6.4 6.4
ENGLISH
Unit
System(HP)
Model
Product Charge kg
Max. Connectable No. of Indoor Units
Net Weight kg
lbs
Dimensions (WxHxD) mm
inch
Connecting Pipes Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
Unit
System(HP)
Model
Product Charge kg
Max. Connectable No. of Indoor Units
Net Weight kg
lbs
Dimensions (WxHxD) mm
inch
Connecting Pipes Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
Unit
System(HP)
Model
Product Charge kg
Max. Connectable No. of Indoor Units
Net Weight kg
lbs
Dimensions (WxHxD) mm
inch
Connecting Pipes Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
14 16 18 20
JRUV140LT3 JRUV160LT3 JRUV180LT3 JRUV200LT3
JRUV140LT3 JRUV160LT3 JRUV180LT3 JRUV200LT3
6.4 7.0 7.5 9.0
23(35) 26(40) 29(45) 32(44)
235 x 1 255 × 1 310 × 1 310 × 1
518 x 1 562 × 1 683 × 1 683 × 1
(920 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1
(36.2 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 1
185 x 1 + 235 x 1 185 x 1 + 235 x 1 235 x 2 235 x 2
408 x 1 + 518 x 1 408 x 1 + 518 x 1 518 x 2 518 x 2
(920 x 1,680 x 760) x 2 (920 x 1,680 x 760) x 2 (920 x 1,680 x 760) x 2 (920 x 1,680 x 760) x 2
(36.2 x 66.1 x 29.9) x 2 (36.2 x 66.1 x 29.9) x 2 (36.2 x 66.1 x 29.9) x 2 (36.2 x 66.1 x 29.9) x 2
518 × 1 + 562 × 1 518 × 1 + 683 × 1 518 × 1 + 683 × 1 562 × 1 + 683 × 1
(920 x 1,680 x 760) x 1 (920 x 1,680 x 760) x 1 (920 x 1,680 x 760) x 1
(1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1
(36.2 x 66.1 x 29.9) x 1 (36.2 x 66.1 x 29.9) x 1 (36.2 x 66.1 x 29.9) x 1
(48.8 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 1
19.05(3/4) 19.05(3/4) 19.05(3/4) 19.05(3/4)
34.9(1 3/8) 34.9(1 3/8) 34.9(1 3/8) 41.3(1 5/8)
1 Outdoor Unit
2 Outdoor Unit
2 Outdoor Unit
(1,240 x 1,680 x 760) x 2
(48.8 x 66.1 x 29.9) x 2
Installation Manual 11
Outdoor Units Information
Unit
System(HP)
Model
Product Charge kg
Max. Connectable No. of Indoor Units
Net Weight kg
lbs
Dimensions (WxHxD) mm
inch
Connecting Pipes Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
(920 x 1,680 x 760) x 2 (920 x 1,680 x 760) x 2 (920 x 1,680 x 760) x 1 (920 x 1,680 x 760) x 1
(1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 2 (1,240 x 1,680 x 760) x 2
(36.2 x 66.1 x 29.9) x 2 (36.2 x 66.1 x 29.9) x 2 (36.2 x 66.1 x 29.9) x 1 (36.2 x 66.1 x 29.9) x 1
(48.8 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 2 (48.8 x 66.1 x 29.9) x 2
Environment-friendly Alternative Refrigerant R410A
Environment-friendly 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. These days the developed countries have approved it as the environment-friendly refrigerant and
encouraged to use it widely to prevent environment pollution.
CAUTION:
• The wall thickness of the piping should comply with the relevant local and national regulations for the designed
pressure 3.8MPa
• 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.
Select the Best Location
Select space for installing outdoor unit, which will meet the following conditions:
• 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.
• Select installation location considering following conditions to avoid bad condition when additionally
performing defrost operation.
1. 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 there is always sunshine.)
14Outdoor Unit
Installation Space
Installation Space
Individual Installation
nDuring the installation of the unit, consider service, inlet, and outlet and acquire the minimum space
• The height of the wall on the front side must be 1500mm or less.
• The height of the wall on the inlet side must be 500mm or less.
No limit to the
height of the wall
A≥10
B≥300
A≥200
B≥300
E≥400
• There is no limit to the wall on the side.
A
• If the height of the walls on the front and the side are higher than the limit,
h1
there must be additional space on the front and the side.
B
- Additional Space on the inlet side by 1/2 of h1.
- Additional Space on the front side by 1/2 of h2
- h2= A(Actual height) - 1500
- h1= B(Actual height) - 500
Installation Manual 15
Installation Space
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.
1. 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)
2. Don't install the suction hole and discharge hole of the Outdoor Unit facing the seasonal wind.
16Outdoor Unit
Lifting Method
Lifting method
• When carrying the suspended, unit pass the ropes under the unit and use the two suspension points each at
the front and rear.
• 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.
Locking points for
transportation ropes
Weight per Capacity
Chassis
UX1
UX2
UX3
Capacity(HP) Weight(kg)
Heat Pump Cooling Only Heat Pump Cooling Only
-6-155
-8-155
8-1901010240185
1212240235
-14-235
14-2601616260255
1818315310
2020325310
Forklift Carrying Hole
Forklift Carrying Guide
ENGLISH
CAUTION
Be very careful while carrying the product.
• Do not have only one person carry product if it is more than 20 kg.
• 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 8 m 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.
Installation Manual 17
Installation
Installation
• 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°Øs legs before being fixed.
• The outdoor unit supports should have minimum height of 200mm.
• Anchor bolts must be inserted at least 75mm.
For outdoor units of 23kW or
above should not be supported
only by the corner supports.
Outdoor units of 14.5, 16kW
can be supported only by the
corner supports.
• 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 200mm).
At least 200mm
Unit : mm
75
75
100
200
- 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
200
side)
- H-beam support
- Concrete support
ENGLISH
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.
WARNING
• 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.
Pallet(Wood Support)
- Remove before Installation
Installation Manual 19
Installation
Preparation of Piping
Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure.
1) Cut the pipes and the cable.
nUse the accessory piping kit or the pipes purchased
locally.
nMeasure the distance between the indoor and the
outdoor unit.
nCut the pipes a little longer than measured distance.
nCut the cable 1.5m longer than the pipe length.
2) Burrs removal
nCompletely remove all burrs from the cut cross section
of pipe/tube.
nPut 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.
3) Flaring work
nCarry out flaring work using flaring tool as shown
Firmly hold copper tube in a bar(or die) as indicated
dimension in the table above.
Pipe
"A"
Gas Liquid Gas
Liquid
Copper
tube
Bar
Point down
Copper pipe
Slanted Uneven Rough
90°
Pipe
Bar
"A"
Clamp handle
Reamer
Handle
Yoke
Cone
Red arrow mark
4) Check
nCompare the flared work with figure below.
nIf flare is noted to be defective, cut off the flared section
and do flaring work again.
20Outdoor Unit
Smooth all round
Even length
all round
Inside is shining without scratches.
= Improper flaring =
Inclined
Surface
Cracked Uneven
damaged
thickness
Installation
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.
• 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.
• 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.
Opening shutoff valve
1. Remove the cap and turn the valve counter clockwise with the 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.
Union
ENGLISH
Closing shutoff valve
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.
* For the tightening torque, refer to the table on the below.
Tightening torque
Shutoff
valve size
Ø6.4
Ø9.5
Ø12.7
Ø15.9
Ø22.2
Ø25.4
Shaft(valve body)
5.4-6.6
8.1-9.9
13.5-16.5
27-3336-44
Hexagonal
wrench 4mm
Hexagonal
wrench 6mm
Hexagonal
wrench 10mm
Tightening torque N-m(Turn clockwise to close)
Cap(Valve lid) Service portFlare nut
13.5-16.5
18-22
23-27
11.5-13.9
14-17
33-39
50-60
62-75
Gas line piping attached to unit
-
22-28-
Installation Manual 21
Installation
HEAT INSULATION
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
Indoor unit
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
Thermal insulator
(accessory)
22Outdoor Unit
Refrigerant piping installation
Refrigerant piping installation
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.
WARNING
• 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.
CAUTION
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 the cables.)
High Low Pressure Common Pipe Connections
1. For High Low Pressure Common Pipe, use provided elbows to
connect between the outdoor units using pipes.
2. During the cutting of the pipes, remove burr, foreign substances
before connecting. Otherwise, the unit may not operate because
of the sludge inside the pipe.
3. Apply Nitrogen Gas of pressure until 3.8MPa(38.7kgf/cm
work area leakage test.
4. After the degree of a vacuum reaches 5 torr, continue the
vacuuming work for more than 1 hour.
5. Open the side pole with hexagonal wrench.
2
) for
Gas pipe
Liquid pipe
Common pipe
ENGLISH
Installing 2 units
hWhen connecting to high low pressure
common pipe, connect pipes using
connecting elbows.
Detach knock outs according
the usages.
Installing 3 units
Installing 4 units
Detach
knock outs
according
the usages.
Installing on the front sideInstalling on the side(Limited to high
low pressure common pipe)
Installation Manual 23
Refrigerant piping installation
Connection of Outdoor units
2 outdoor units
Outdoor unitsModelGas pipeLiquid pipe
[Unit : mm]
2 Unit
3 Unit
4 Unit
C
C
C
C
C
ARCNN21
ARCNN31
A
ARCNN41
For more information, refer accessory installation manual.
Y branch
A
To outdoor unit
A
To branch piping or indoor unit
B
B
416
408
I.D.28.58
I.D.34.9I.D.31.8
I.D.41.3 I.D.38.1 O.D.34.9
130
341
298
O.D.34.9
I.D.41.3
125
415
375
I.D.44.48 I.D.53.98
Viewed from point A
in direction of arrow
I.D.28.58
I.D.22.2
I.D.28.58
I.D.34.9I.D.41.3
I.D.28.58
I.D.41.3
I.D.28.58
Within +/- 10
111
134
111
I.D.15.88
I.D.19.05
I.D.22.2 O.D.19.05
I.D.19.05I.D.22.2
I.D.22.2
I.D.19.05
I.D.25.4
Facing
downwards
70
80
O.D.22.2
331
314
334
281
334
281
Facing
upwards
I.D.12.7
I.D.15.88
I.D.19.05
I.D.19.05
I.D.9.52
83
I.D.15.88I.D.12.7
83
I.D.12.7 I.D.15.88
83
I.D.12.7 I.D.15.88
24Outdoor Unit
Within ± 3°Within ± 3°
Refrigerant piping installation
Caution
1. Use the following materials for refrigerant piping.
• Wall thickness : Comply with the relevant local and national regulations for the designed pressure
Outer diameter
[mm]
Minimum
thickness [mm]
2. Commercially available piping often contains dust and other materials. Always blow it clean with a dry
inert gas.
3. Use care to prevent dust, water or other contaminants from entering the piping during installation.
4. Reduce the number of bending portions as much as possible, and make bending radius as big as
possible.
5. Always use the branch piping set shown below, which are sold separately.
ARBLN01621, ARBLN03321, ARBLN07121,
6. If the diameters of the branch piping of the designated refrigerant piping differs, use a pipe cutter to cut
the connecting section and then use an adapter for connecting different diameters to connect the piping.
7. Always observe the restrictions on the refrigerant piping (such as rated length, difference in height, and
piping diameter).
Failure to do so can result in equipment failure or a decline in heating/cooling performance.
8. A second branch cannot be made after a header. (These are shown by .)
3.8MPa. We recommend the following table as the minimum wall thickness.
6.35
0.8
9.52
0.8
Y branch
12.7
0.8
15.88
0.99
19.05
0.99
22.2
25.4
0.99
0.99
4 branch 7 branch 10 branch
28.58
0.99
31.8
1.1
34.9
1.21
38.1
1.35
Header
ARBL054 ARBL057 ARBL1010
ARBLN14521, ARBLN23220
ARBL104 ARBL107 ARBL2010
44.45 53.98
41.3
1.43 1.55 2.1
ENGLISH
To Outdoor Unit
A
B
Sealed Piping
A
A
9. The Multi V will stop due to an abnormality like excessive or insufficient refrigerant. At such a time,
always properly charge the unit. When servicing, always check the notes concerning both the piping
length and the amount of additional refrigerant.
10. Never perform a pump down. This will not only damage the compressor but also deteriorate the
performance.
11. Never use refrigerant to perform an air purge. Always evacuate air by using a vacuum pump.
Installation Manual 25
B
Refrigerant piping installation
12. Always insulate the piping properly. Insufficient insulation will result in a decline in heating/cooling
performance, drip of condensate and other such problems.
13. When connecting the refrigerant piping, make sure the service valves of the Outdoor Unit is completely
closed (the factory setting) and do not operate it until the refrigerant piping for the Outdoor and Indoor
Units has been connected, a refrigerant leakage test has been performed and the evacuation process
has been completed.
14. Always use a non-oxidizing brazing material for brazing the parts and do not use flux. If not, oxidized
film can cause clogging or damage to the compressor unit and flux can harm the copper piping or
refrigerant oil.
WARNING
When installing and moving the air conditioner to another site, be sure to make recharge refrigerant
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.
- After selecting diameter of the refrigerant pipe to suit total capacity of the indoor unit connected after
branching, use an appropriate branch pipe set according to the pipe diameter of the indoor unit and the
installation pipe drawing.
26Outdoor Unit
Pipe connections between indoor and outdoor unit
Pipe connections between indoor and outdoor unit
• Pipe connections can be done on the front side or on the side according to the installation environments.
• Be sure to let 0.2kgf/cm
• If Nitrogen was not flown during welding, many oxidized membranes may form inside the pipe and disturb the normal
operations of valves and condensers.
Left Side Pipe Draw Out
Preparation Work
• Use Knock Outs of Base Pan of the outdoor unit for Left/Right or Bottom pipe drawing outs.
Removal Area for common
pipe bottom side connections.
2
Nitrogen flow in the pipe when welding.
Front Side Pipe Draw Out
Removal Area for Liquid/Gas pipe
bottom side connections.
Right Side Pipe Draw Out
Nitrogen
Direction
Regulator
Valve
Nitrogen
Refrigerant Pipe
Taping
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.
ENGLISH
CAUTION
• Remove the brackets on the inverter condenser legs that were fixed to protect the unit during the transportation.
(If bracket is not removed, abnormal noise or vibration may occur.)
Nut
Washer
1. Open the front panel.
2. Remove Brackets
3. Fix with only nut and washer as shown in the
figure.
Brackets for Transportation
Installation Manual 27
Pipe connections between indoor and outdoor unit
n
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:
1. Verify whether the liquid/gas/common pipes are
locked.
2. Extract remaining refrigerant or air inside using the
service port.
3. Remove the leakage prevention cap
n
Method of pipe cap work during the
Liquid pipe
Gas pipe
Common pipe
installation of single outdoor unit
1. Remove rubber cap inserted in the common pipe.
2. Wrap the common pipe service valve with wet towel.
3. Insert the pipe cap provided into the common pipe.
4. Place high/low pressure flare nut cap under the pipe cap so
that the pipe cap does not move.
5. Weld the pipe cap.
hIf not wrapped with a wet towel, there may be damages
inside the valve.
hIf the unit is operated without pipe cap work, there may be
abnormality in the cycle caused by refrigerant leakage.
Service Port
Leakage Prevention Cap
Pipe Cap
Flare Nut
Pipe Drawing Out during Single / Series connection
n
Method of drawing out pipes on the front side
• Proceed with the pipe work as shown in the below figure for front side pipe drawing out.
Common pipe Liquid pipe Gas pipe
Pipe Knock Out for
Liquid/Gas pipes
Pipe Knock Out for
common pipes
28Outdoor Unit
Pipe connections between indoor and outdoor unit
n
Method of drawing out pipes on the bottom side
①
Drawing out common pipe through side panel
Common pipeLiquid pipe Gas pipe
Remove only liquid/gas pipe Knock OutRemove Base Pan
②
Drawing out common pipe through bottom pipe
ENGLISH
Common pipe
n
Figure of Sides when drawing out through bottom pipe
i) Single outdoor unit
Liquid pipe Gas pipe
ii) Series outdoor units
(Draw out common pipes
through bottom)
Remove Pipe
Knock Out Hole
iii) Series outdoor units
(Draw out common pipes
through side panel)
Remove Base Pan
Installation Manual 29
Pipe connections between indoor and outdoor unit
Refrigerant piping system
uY branch method
1 Outdoor Units
Example : 5 Indoor Units connected
: Outdoor Unit
?
? : 1st branch (Y branch)
C
: Indoor Units
H 110m
L150m (200 m : Conditional application)
l
40m (90 m : Conditional application)
10m or
less
Slave
Slave
Master
H 110m
Slave
Master
L150m (200 m : Conditional application)
l 40m (90 m : Conditional application)
Master
ODU Capacity
Master Slave
2 Outdoor Units
Example : 5 Indoor Units connected
?
: Outdoor Unit
? : 1st branch (Y branch)
C
: Indoor Units
D
: Downward Indoor Unit
? : Connection branch pipe
between Outdoor units:
ARCNN21
Piping length from outdoor branch to outdoor unit ≤10m, equivalent length:max 13m
(for 22HP or more)
Additional Application
To satisfy below condition to make 40 m ~ 90 m of pipe length after first branch.
1) Diameter of pipes between first branch and the last branch should be increased by one step,
except pipe diameter B,C,D is same as Diameter A
Ø6.35Ø 9.52 Ø 12.7 Ø 15.88 Ø 19.05 Ø 22.2 Ø 25.4*, Ø 28.58 Ø 31.8*, Ø 34.9 Ø
38.1*
* : It is not necessary to size up.
2) While calculating whole refrigerant pipe length, pipe B,C,D length should be calculated twice.
A+Bx2+Cx2+Dx2+a+b+c+d+e ≤ 1,000 m
3) Length of pipe from each indoor unit to the closest branch (a,b,c,d,e) ≤ 40 m
4) [Length of pipe from outdoor unit to the farthest indoor unit 5 (A+B+C+D+e)]
- [Length of pipe outdoor unit to the closest indoor unit 1 (A+a)] ≤ 40 m
30Outdoor Unit
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