LG MULTI V IV PRO JRUN180LLS4 User manual

INSTALLATION MANUAL
AIR
CONDITIONER
www.lg.com
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.
MFL68165202
Rev.00_092019
Copyright © 2014 - 2019 LG Electronics Inc. All Rights Reserved.
ENGLISH

• Do not excessively cool indoors. This may be harmful for your health and may consume more
electricity.
• Block sunlight with blinds or curtains while operating the air conditioner.
• Keep doors or windows closed tightly while operating the air conditioner.
• Adjust the direction of the air guide vane vertically or horizontally to circulate indoor air efficiently.
• 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 :
Refer the label at side of each unit.
Dealer’s name :
Date of purchase :
Here are some tips that will help you to minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
given below:
TIPS FOR SAVING ENERGY
2
ENGLISH
TIPS FOR SAVING ENERGY

3
SAFETY INSTRUCTIONS
ENGLISH
SAFETY INSTRUCTIONS
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.
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 install 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.
!
The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or
incorrect operation of the appliance.
The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as described below.
WARNING
This indicates that the failure to follow the instructions can cause serious injury or death.
CAUTION
This indicates that the failure to follow the instructions can cause the minor injury or damage to the
product.
This symbol is displayed to indicate matters and operations that can cause risk.
Read the part with this symbol carefully and follow the instructions in order to avoid risk.
!
!
!

• 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.
• 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, hazards due to
lack of oxygen in the room could result.
Operation
• 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.
SAFETY INSTRUCTIONS
4
ENGLISH

SAFETY INSTRUCTIONS 5
ENGLISH
CAUTION
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 installing 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 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.
!

6SAFETY INSTRUCTIONS
ENGLISH
• 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 outdoor 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.

7
2TIPS FOR SAVING
ENERGY
3SAFETY INSTRUCTIONS
8INSTALLATION
PROCESS
9OUTDOOR UNITS
INFORMATION
14 ENVIRONMENT-
FRIENDLY ALTERNATIVE
REFRIGERANT R410A
15 SELECT THE BEST
LOCATION
16 INSTALLATION SPACE
16 Individual Installation
18 LIFTING METHOD
19 INSTALLATION
19 The location of the Anchor bolts
20 Foundation for Installation
21 Preparation of Piping
24 Plumbing materials and storage methods
26 REFRIGERANT PIPING
INSTALLATION
26 Precautions on Pipe connection / Valve
operation
27 PIPE CONNECTIONS
BETWEEN INDOOR AND
OUTDOOR UNIT
27 Preparation Work
28 Pipe Drawing Out during Single / Series
connection
30 Refrigerant piping system
32 Pipe Connection Method between
outdoor unit/indoor unit
41 Refrigerant charging
42 Distribution Method
43 Branch pipe Fitting
47 Leak Test and Vacuum drying
49 Vacuum Mode
50 Heat insulation of refrigerant piping
51 ELECTRICAL WIRING
51 CAUTION
53 Control box and connecting position of
wiring
54 Communication and Power Cables
55 Wiring of main power supply and
equipment capacity
56 Field Wiring
63 Checking the setting of outdoor units
64 Group Number setting
65 Automatic Addressing
68 Cool & Heat selector
69 Static pressure compensation mode
70 Night Low Noise Function
71 Overall defrost mode
72 Setting the ODU address
73 Snow removal & rapid defrost
74 Target pressure adjusting
75 High Efficiency cooling mode
76 Auto dust removal mode
77 Smart Load Control
78 Continuous Cooling Function
79 Self-Diagnosis Function
90 CAUTION FOR
REFRIGERANT LEAK
90 Introduction
90 Checking procedure of limiting
concentration
92 INSTALLATION GUIDE
AT THE SEASIDE
TABLE OF CONTENTS
TABLE OF CONTENTS
ENGLISH

8INSTALLATION PROCESS
ENGLISH
The foundation must be level even
Outdoor unit foundation work
Avoid short circuits and ensure
sufficient space is allowed for service
Installation of outdoor unit
Refer to automatic addressing flowchart
Automatic addressing of indoor unit
In the final check for 24hours at 3.8 MPa(38.7 kgf/cm
2
) there must be no drop in pressure.
Leak test
Multiple core cable must not be used.
(suitable cable should be selected)
Electrical work
(connection circuits and drive circuits)
Make sure no gaps are left where
the insulating materials are joined
Heat insulation work
Make sure airflow is sufficient
Duct work
Adjust to downward gradient
Drain pipe work
Special attention to dryness,
cleanness and tightness
Refrigerant piping work
Check model name to make
sure the fitting is made correctly
Installation of indoor unit
Take account of gradient
of drain piping
Sleeve and insert work
Make connection clearly between outdoor, indoor, remote controller and option.
Preparation of contract drawings
Indicate clearly who will be responsible for switch setting.
Determination of division work
The vacuum pump used must have a capacity of reaching at least 5 torr, more than 1 hour
Vacuum drying
Recharge correctly as calculated in this manual. and record the amount of added refrigerant
Additional charge of refrigerant
Make sure there are no gaps left between the facing materials used on the ceiling
Fit facing panels
Run each indoor unit in turn to make sure the pipe work has been fitted correctly
Test run adjustment
Explain the use of the system as clearly as possible to your customer and make sure all relevant
documentation is in order
Transfer to customer with explanation
Preheat the crank case with the electrical heater for more than 6 hours.
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 3.8 MPa.
• 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 PROCESS

OUTDOOR UNITS INFORMATION 9
ENGLISH
Power Supply : 380V, 60Hz / 380 – 415V, 50Hz
Model Name : A(C)RUN***LLS4, A(C)RUN***LLN4
CAUTION
!
* A(C)RUN220LLN4 (Single Unit) model can guarantee the operation only within 160%
combination ratio.
Notes :
1) We can guarantee the operation only within 130% combination ratio.
If you want to connect more than 130% combination ratio, please contact us and
discuss the requirement.
2) In case that operating indoor units ratio to rated capacity of outdoor unit is more than
130%, the airflow should be operated as low step in the all indoor units.
3) In case of Space Saving Model (A(C)RUN***LLN4), we can recommend the operation
within 120% combination ration for two or more combination.
4) The numbers in parentheses means maximum connectable indoor units in accordance
with outdoor units combination.
 Combination Ratio(50~200%)
Number of Outdoor units
Combination Ratio
Standard Model Space Saving Model
Single Unit 200% 160%*
Two Units Combination 160% 120%
Three or More Units Combination 130% 120%
Unit
System(HP)
Model Combination Unit
Independent Unit
Refrigerant Precharged
Amount
kg
lbs
Number of maximum connectable indoor units
Net Weight kg
lbs
Dimensions (WxHxD)
mm
inch
(36-7/32 × 66-5/32 ×
29-29/32) × 1
(36-7/32 × 66-5/32 ×
29-29/32) × 1
(36-7/32 × 66-5/32 ×
29-29/32) × 1
(36-7/32 × 66-5/32 ×
29-29/32) × 1
Piping Connections mm(inch)
mm(inch)
1 Outdoor Unit
8 10 12 14
A(C)RUN080LLS4 A(C)RUN100LLS4 A(C)RUN120LLS4 A(C)RUN140LLS4
A(C)RUN080LLS4 A(C)RUN100LLS4 A(C)RUN120LLS4 A(C)RUN140LLS4
5.0 5.0 5.0 6.6
11.0 11.0 11.0 14.6
13(20) 16(25) 20(30) 23(35)
175 × 1 175 × 1 180× 1 190 × 1
386× 1 386× 1 397 × 1 419 × 1
(920 × 1,680 × 760) × 1 (920 × 1,680 × 760) × 1 (920 × 1,680 × 760) × 1 (920 × 1,680 × 760) × 1
Ø 9.52(3/8) Ø 9.52(3/8) Ø 12.7(1/2) Ø 12.7(1/2)
Ø 19.05(3/4) Ø 22.2(7/8) Ø 28.58(1-1/8) Ø 28.58(1-1/8)
 Standard Model
OUTDOOR UNITS INFORMATION

10 OUTDOOR UNITS INFORMATION
ENGLISH
Unit
1 Outdoor Unit
System(HP)
16 18 20
Model Combination Unit
A(C)RUN160LLS4 A(C)RUN180LLS4 A(C)RUN200LLS4
Independent Unit
A(C)RUN160LLS4 A(C)RUN180LLS4 A(C)RUN200LLS4
Refrigerant Precharged
Amount
kg 6.0 6.0 7.6
lbs 13.2 13.2 16.8
Number of maximum connectable indoor units 26(40) 29(45) 32(50)
Net Weight kg
205 × 1 245 × 1 255 × 1
lbs 452 × 1 540 × 1 562 × 1
Dimensions (WxHxD)
mm (1,240 × 1,680 × 760) × 1 (1,240 × 1,680 × 760) × 1 (1,240 × 1,680 × 760) × 1
inch
(48-13/16 × 66-5/32
× 29-29/32) x 1
(48-13/16 × 66-5/32
× 29-29/32) x 1
(48-13/16 × 66-5/32
× 29-29/32) x 1
Piping Connections mm(inch)
Ø 12.7(1/2) Ø 15.88(5/8) Ø 15.88(5/8)
mm(inch) Ø 28.58(1-1/8) Ø 28.58(1-1/8) Ø 28.58(1-1/8)
Unit
2 Outdoor Units
System(HP) 22 24 26 28
Model
Combination Unit
A(C)RUN220LLS4 A(C)RUN240LLS4 A(C)RUN260LLS4 A(C)RUN280LLS4
Independent Unit
A(C)RUN120LLS4 A(C)RUN120LLS4 A(C)RUN140LLS4 A(C)RUN160LLS4
A(C)RUN100LLS4 A(C)RUN120LLS4 A(C)RUN120LLS4 A(C)RUN120LLS4
Refrigerant Precharged
Amount
kg 5.0 × 2 5.0 × 2 6.6 × 1 + 5.0 × 1 6.0 × 1 + 5.0 × 1
lbs 11.0 × 2 11.0 × 2 14.6 × 1 + 11.0 × 1 13.2 × 1 + 11.0 × 1
Number of maximum connectable indoor units 35(44) 39(48) 42(52) 45(56)
Net Weight kg
180 × 1 + 175 × 1 180 x 2 190 × 1 + 180 × 1 205 x 1 + 180 x 1
lbs 397 × 1 + 386 × 1 397 x 2 419 × 1 + 397 × 1 452 x 1 + 397 x 1
Dimensions (WxHxD)
mm (920 × 1,680 × 760) × 2 (920 × 1,680 × 760) × 2 (920 × 1,680 × 760) × 2
(1,240 × 1,680 × 760) × 1
+ (920 × 1,680 × 760) × 1
inch
(36-7/32 × 66-5/32 ×
29-29/32) x 2
(36-7/32 × 66-5/32 ×
29-29/32) x 2
(36-7/32 × 66-5/32 ×
29-29/32) x 2
(48-13/16 × 66-5/32 × 29-29/32)
x 1 + (36-7/32×66-5/32×29-
29/32)
Piping Connections mm(inch) Ø 15.88(5/8) Ø 15.88(5/8) Ø 19.05(3/4) Ø 19.05(3/4)
mm(inch) Ø 28.58(1-1/8) Ø 34.9(1-3/8) Ø 34.9(1-3/8) Ø 34.9(1-3/8)
Unit
2 Outdoor Units
System(HP) 30 32 34 36
Model
Combination Unit
A(C)RUN300LLS4 A(C)RUN320LLS4 A(C)RUN340LLS4 A(C)RUN360LLS4
Independent Unit
A(C)RUN180LLS4 A(C)RUN200LLS4 A(C)RUN200LLS4 A(C)RUN200LLS4
A(C)RUN120LLS4 A(C)RUN120LLS4 A(C)RUN140LLS4 A(C)RUN160LLS4
Refrigerant Precharged
Amount
kg 6.0 × 1 + 5.0 × 1 7.6 × 1 + 5.0 × 1 7.6 × 1 + 6.6 × 1 7.6 × 1 + 6.0 × 1
lbs 13.2 × 1 + 11.0 × 1 16.8 × 1 + 11.0 × 1 16.8 × 1 + 14.6 × 1 16.8 × 1 + 13.2 × 1
Number of maximum connectable indoor units 49(60) 52(64) 55(64) 58(64)
Net Weight kg
245 × 1 + 180 × 1 255 × 1 + 180 × 1 255 × 1 + 190 × 1 255 × 1 + 205 × 1
lbs 540 × 1 + 397 × 1 562 × 1 + 397 × 1 562 × 1 + 419 × 1 562 × 1 + 452 × 1
Dimensions (WxHxD)
mm
(1,240 × 1,680 × 760) × 1
+ (920 × 1,680 × 760) × 1
(1,240 × 1,680 × 760) × 1
+ (920 × 1,680 × 760) × 1
(1,240 × 1,680 × 760) × 1
+ (920 × 1,680 × 760) × 1 (1,240 × 1,680 × 760) × 2
inch
(48-13/16 × 66-5/32 × 29-29/32) x 1
+ (36-7/32×66-5/32×29-29/32)
(48-13/16 × 66-5/32 × 29-29/32) x1
+ (36-7/32×66-5/32×29-29/32)
(48-13/16 × 66-5/32 × 29-29/32) x1
+ (36-7/32×66-5/32×29-29/32)
(48-13/16 × 66-5/32 × 29-
29/32) x 2
Piping Connections mm(inch) Ø 19.05(3/4) Ø 19.05(3/4) Ø 19.05(3/4) Ø 19.05(3/4)
mm(inch) Ø 34.9(1-3/8) Ø 34.9(1-3/8) Ø 34.9(1-3/8) Ø 41.3(1-5/8)