LG | ARNU24GSCL4.EMBBLEU | Installation guide | LG ARNU05GSBL4.EMBBLEU Installation guide

LG ARNU05GSBL4.EMBBLEU Installation guide
ITALIANO
ҚАЗАҚ ТІЛІ
ESPAÑOL
БЕЛАРУСКАЯ МОВА
FRANÇAIS
O‘ZBEK TILI
DEUTSCH
AIR
CONDITIONER
ENGLISH
РУССКИЙ ЯЗЫК УКРАÏНСЬКА
INSTALLATION MANUAL
ΕΛΛΗΝΙΚΆ
ČEŠTINA
WALL MOUNTED
Original instruction
www.lg.com
Copyright © 2017 - 2019 LG Electronics Inc. All Rights Reserved.
LIMBA ROMÂNĂ
MFL68800316
Rev.00_040419
POLSKI
[Representative] LG Electronics Inc. EU Representative :
LG Electronics European Shared Service Center B.V.
Krijgsman 1, 1186 DM Amstelveen, The Netherlands
[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro,
Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA
NEDERLANDS
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.
2
TIPS FOR SAVING ENERGY
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 :
IMPORTANT SAFETY INSTRUCTIONS
3
READ ALL INSTRUCTIONS BEFORE USING THE
APPLIANCE.
Always comply with the following precautions to avoid dangerous
situations and ensure peak performance of your product
! 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.
• Installation must conform with local building codes.
• 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
• Don’t use a power cord, a plug or a loose socket which is
damaged.
- Otherwise, it may cause a fire or electrical shock.
• For electrical work, contact the dealer, seller, a qualified
electrician, or an Authorized Service Center.
- Do not disassemble or repair the product. There is risk of fire
or electric shock.
ENGLISH
IMPORTANT SAFETY INSTRUCTIONS
4
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
• Always ground the product.
- There is risk of fire or electric shock.
• Install the panel and the cover of control box securely.
- 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.
• Use the correctly rated breaker or fuse.
- There is risk of fire or electric shock.
• Do not modify or extend the power cable.
- There is risk of fire or electric shock.
• Do not let the air conditioner run for a long time when the
humidity is very high and a door or a window is left open.
- Moisture may condense and wet or damage furniture.
• Be cautious when unpacking and installing the product.
- Sharp edges could cause injury. Be especially careful of the
case edges and the fins on the condenser and evaporator.
• For installation, always contact the dealer or an Authorized
Service Center.
- There is risk of fire, electric shock, explosion, or injury.
• Do not install the product on a defective installation stand.
- It may cause injury, accident, or damage to the product.
• 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, and personal
injury.
• There is a risk of fire and explosion.
- Inert gas (nitrogen) should be used when you check
plumbing leaks, cleaning or repairs of pipes etc.
If you are using combustible gases including oxygen,
product may have the risk of fires and explosions.
• 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.
IMPORTANT SAFETY INSTRUCTIONS
5
Operation
• Do not store or use flammable gas or combustibles near the
product.
- There is risk of fire or failure of product.
! CAUTION
Installation
• Always check for gas (refrigerant) leakage after installation or
repair of product.
- Low refrigerant levels may cause failure of product.
• Install the drain hose to ensure that water is drained away
properly.
- A bad connection may cause water leakage.
• Keep level even when installing the product.
- To avoid vibration or water leakage.
• Use two or more people to lift and transport the product.
- Avoid personal injury.
• Means for disconnection must be incorporated in the fixed
wiring in accordance with the wiring rules.
ENGLISH
• Do not turn on the breaker or power under condition that front
panel, cabinet, top cover, control box cover are removed or
opened.
- Otherwise, it may cause fire, electric shock, explosion or
death.
6
TABLE OF CONTENTS
ENGLISH
TABLE OF CONTENTS
2
3
7
7
8
9
TIPS FOR SAVING ENERGY
9
9
10
10
11
15
16
17
18
19
24
24
24
Select the best Location
Fixing Installation Plate
Drill a Hole in the Wall
Flaring Work
Connecting the Piping
Checking the Drainage
Installation of filters
Wiring Connection
DIP Switch Setting
Group control setting
Model Designation
Airborne Noise Emission
Limiting concentration
IMPORTANT SAFETY INSTRUCTIONS
INSTALLATION PARTS
INSTALLATION TOOLS
INSTALLATION MAP
INSTALLATION
INSTALLATION PARTS
ENGLISH
INSTALLATION PARTS
Name
Quantity
Installation plate
1 EA
Shape
The feature can be changed according to type of model.
Type "A" screw
5 EA
Type "C" screw
2 EA
Screws for fixing panels are attached to decoration panel.
INSTALLATION TOOLS
Figure
Name
7
Figure
Name
Screw driver
Multi-meter
Electric drill
Hexagonal wrench
Measuring tape, Knife
Ammeter
Hole core drill
Gas-leak detector
Spanner
Thermometer,
Level
Torque wrench
Flaring tool set
8
INSTALLATION MAP
ENGLISH
INSTALLATION MAP
Installation plate
Sleeve
Bushing-Sleeve
Putty(Gum Type Sealant)
Bend the pipe as closely
on the wall as possible,
but be careful that it
doesn't break.
Vinyl tape (Wide)
Saddle
* The feature can be changed according to type of model.
!
NOTE
• You should purchase the installation parts.
• Apply after carrying out a
drainage test.
• To carry out the drainage
test, remove the air filters
and pour water into the heat
exchanger.
INSTALLATION
9
ENGLISH
INSTALLATION
Select the best Location
- There should not be any heat or steam near
the unit.
- Select a place where there are no obstacles
around of the unit.
- Make sure that condensation drainage can
be conveniently routed away.
- Do not install near a doorway.
- Ensure that the interval between a wall and
the left (or right) of the unit is more than 100
mm. The unit should be installed as high as
possible on the wall, allowing a minimum of
200 mm from ceiling.
- Use a metal detector to locate studs to
prevent unnecessary damage to the wall.
More than
100
2 Measure the wall and mark the centerline.
It is also important to use caution
concerning the location of the installation
plate. Routing of the wiring to power
outlets is through the walls typically.
Drilling the hole through the wall for piping
connections must be done safely.
More than 200
SB chassis
* The feature can be changed according to
type of model.
!
Ø 65
Ø
Ø65
65
Installation Plate
95
217
133
175
CAUTION
Install the indoor unit on the wall where
the height from the floor is more than
2 300 mm.
Place a level on raised tab
442
(Unit : mm)
SC chassis
Unit Outline
Place a level on raised tab
460
The wall you select should be strong and solid
enough to prevent vibration
1 Mount the installation plate on the wall
with type "A" screws. If mounting the unit
on a concrete wall, use anchor bolts.
- Mount the installation plate horizontally
by aligning the centerline using Horizontal
meter.
Ø 65
Ø65
Left rear piping
Fixing Installation Plate
570
Installation Plate
Ø 65
Measuring Tape
56
69
105
Right rear piping
(Unit : mm)
Left rear piping
More than 2 300
Unit Outline
442
Right rear piping
More than
100
207
Measuring Tape
Hanger
(Unit : mm)
10 INSTALLATION
- Drill the piping hole with a Ø 65 mm hole
core drill. Drill the piping hole at either the
right or the left with the hole slightly slanted
to the outdoor side.
WALL
Indoor
Outdoor
1. Completely remove all burrs from the cut
cross section of pipe/tube.
2. While removing burrs put the end of the
copper tube/pipe in a downward direction
while removing burrs location is also
changed in order to avoid dropping burrs
into the tubing.
Pipe
5-7 mm
Reamer
(3/16"~5/16")
ENGLISH
Burrs removal
Drill a Hole in the Wall
Point down
Putting nut on
Flaring Work
Main cause for gas leakage is due to defect of
flaring work. Carry out correct flaring work in
the following procedure.
- Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube
having completed burr removal.
(not possible to put them on after finishing
flare work)
Flare nut
Cut the pipes and the cable
1 Use the piping kit accessory or the pipes
purchased locally.
2 Measure the distance between the indoor
and the outdoor unit.
3 Cut the pipes a little longer than measured
distance.
4 Cut the cable 1.5 m longer than the pipe
length.
Copper
pipe
Copper tube
Flaring work
1 Firmly hold copper pipe in a bar with the
90°
Slanted Uneven Rough
dimension shown in below table table
below.
2 Carry out flaring work with the flaring tool.
Pipe diameter
Inch (mm)
Ø 1/4 (Ø 6.35)
Ø 3/8 (Ø 9.52)
Ø 1/2 (Ø 12.7)
Ø 5/8 (Ø 15.88)
Ø 3/4 (Ø 19.05)
A inch (mm)
Wing nut type Clutch type
0.04~0.05(1.1~1.3)
0.06~0.07(1.5~1.7)
0~0.02
0.06~0.07(1.6~1.8)
(0~0.5)
0.06~0.07(1.6~1.8)
0.07~0.08(1.9~2.1)
INSTALLATION
"A"
3 Pull back the tubing holder.
4 Remove pipe port cover and positioning
the tubing
Indoor unit back side view
Tubing holder
Copper pipe
<Clutch type>
Right
Downwards
Left
Backwards
* The feature can be changed according to
type of model.
Check
1 Compare the flared work with the figure
by.
2 If a flared section is defective, cut it off
and do flaring work again.
Smooth all round
Inside is shiny without scratches
= Improper flaring =
Even length
all round
Inclined Surface Cracked Uneven
damaged
thickness
Connecting the Piping
1 Pull the screw cap at the bottom of the
indoor unit
2 Remove the chassis cover from the unit by
loosing 2 screws
Chassis cover
Good case
- Press on the tubing cover and unfold the
tubing to downward slowly. And then bend
to the left side slowly.
ENGLISH
<Wing nut type>
Bar
11
12 INSTALLATION
ENGLISH
Bad case
- Following bending case from right to left
directly may cause damage to the tubing.
Installation of Indoor Unit
1 Hook the indoor unit onto the upper
portion of the installation plate.( engage
the three hooks at the top of the indoor
unit with the upper edge of the installation
plate) Ensure that the hooks are properly
seated on the installation plate by moving
it left and right
1
2
Installation plate
2 Unlock the tubing holder from the chassis
and mount between the chassis and
installation plate in order to separate the
bottom side of the indoor unit from the
wall.
Tubing Holder
* The feature can be changed according to
type of model.
* The feature can be changed according to
type of model.
!
CAUTION
Installation Information. For right piping.
Follow the instruction above.
Piping
1 Insert the connecting cable through the
bottom side of indoor unit and connect the
cable (You can see detail contents in
'Connecting the cables' section)
<Left side piping>
View
Terminal block of indoor unit
1(L)
2(N)
Indoor power input
3(A)
4(B)
Outdoor unit
INSTALLATION 13
!
If the drain hose is routed inside the room
insulate the hose with an insulation
material* so that dripping from sweating
condensation) will not damage furniture or
floors.
* Foamed polyethylene or equivalent is
recommended.
View
Terminal block of indoor unit
1(L)
2(N)
Indoor power input
CAUTION
3(A)
4(B)
Outdoor unit
Connecting the installation pipe
and drain hose to the indoor unit.
1 Align the center of the pipes and
sufficiently tighten the flare nut by hand
2 Secure the cable onto the control board
with the cable retainer.
3 Tape the tubing pipe, drain hose and the
connection cable. Be sure that the drain
hose is located at the lowest side of the
bundle. Locating at the upper side can
cause overflow from the drain pan through
the inside of the unit.
<Left side piping>
Tape
Indoor unit tubing
2 Tighten the flare nut with a wrench
Outside diameter
mm
Ø 6.35
Ø 9.52
Ø 12.7
Ø 15.88
Ø 19.05
inch
1/4
3/8
1/2
5/8
3/4
Connecting
cable
Drain hose
Flare nut Pipes
Torque
kgf.m
1.8~2.5
3.4~4.2
5.5~6.5
6.3~8.2
9.9~12.1
Open-end wrench
(fixed)
Drain hose
Connecting pipe
Flare nut
Connection
pipe
Wrench
<Right side piping>
Indoor unit tubing
3 When needed to extend the drain hose of
indoor unit, assembly the drain pipe as
shown on the drawing
Tape
Connecting
cable
Drain hose
Connecting pipe
Drain pipe
Indoor unit drain hose
* The feature can be changed according to
type of model.
Adhesive Vinyl tape(narrow)
ENGLISH
<Right side piping>
14 INSTALLATION
ENGLISH
Wrap the insulation material
around the connecting portion.
1 Overlap the connection pipe insulation
material and the indoor unit pipe insulation
material. Bind them together with vinyl
tape so that there may be no gap.
Insulation material
2 Set the tubing cutting line upward.
Finishing the indoor unit
installation
1 Mount the tubing holder in the original
positon.
2 Ensure that the hooks are properly seated
on the installation plate by moving it left
and right.
3 Press the lower left and right sides of the
unit against the installation plate until the
hooks engage into their slots (clicking
sound).
4 Finish the assembly by screwing the unit
to the installation plate by using two
pieces of type "C" screws. And assemble a
chassis cover.
Wrap the area which accommodates the
rear piping housing section with vinyl tape.
Cutting Line
Cutting Line
Gas Pipe
Liquid Pipe
Good Case
Bad Case
* Tubing cutting line have to be upward.
Connection pipe
Vinyl tape (wide)
Indoor unit pipe
Wrap with vinyl tape
Connecting cable
Pipe
Vinyl tape(narrow)
3 Bundle the piping and drain hose together
by wrapping them with vinyl tape sufficient
enough to cover where they fit into the
rear piping housing section.
Wrap with vinyl tape
Pipe
Vinyl tape(wide)
Drain hose
Type 'C' screw
INSTALLATION 15
2 Do not make drain piping like the
following.
To check the drainage.
1 Pour a glass of water on the evaporator.
2 Ensure the water flows through the drain
Do not raise
hose of the indoor unit without any
leakage and goes out the drain exit.
Water
leakage
Connecting area
drain hose
Accumulated
drain water
Air
Leakage
checking
Drain pan
Drain
hose
Water
leakage
Waving
Leakage
checking
Tip of drain hose
dipped in water
Water
leakage
Drain piping
1 The drain hose should point downward for
easy drain flow.
Ditch
Less than
50 mm gap
Downward slope
* The feature can be changed according to
type of model.
ENGLISH
Checking the Drainage
16 INSTALLATION
ENGLISH
Installation of filters
1 Pull out the 3M Filter from the separately
packed plastic bag.
2 Detach the two nitto tapes from the filter.
3 Insert the filter into the filter case.
4 Detach two nitto tapes from the plasma
filter.
3M Filter
Plasma Filter
INSTALLATION 17
- Connect the wires to the terminals on the control board individually according to the outdoor
unit connection.
- Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of
indoor unit respectively.
Terminal block of outdoor unit
Terminal block of indoor unit
1(L)
2(N)
3(A)
4(B)
Outdoor unit Indoor unit
Central controller
SODU SODU IDU IDU INTERNET DRY1 DRY2 GND 12 V
Indoor power input
!
WARNING
Make sure that the screws of the terminal are free from looseness.
!
CAUTION
The Power cord connected to the unit should be selected according to the following
specifications.
!
CAUTION
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have separate power specially for the air conditioner. As for the method of
wiring, follow the circuit diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose
from vibrations to which the unit is subjected during the course of transportation. Check
them and make sure that they are all tightly fastened. (If they are loose, it could give rise to
burn-out of the wires.)
4) Confirm the Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage
marked on the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Do not install the leakage breaker in a place which is wet or moist.
Water or moist may cause short circuit.
9) The following troubles would be caused by voltage drop-down.
- Vibration of a magnetic switch, damage on the contact point there of, fuse breaking,
disturbance to the normal function of a overload protection device.
- Proper starting power is not given to the compressor.
ENGLISH
Wiring Connection
18 INSTALLATION
ENGLISH
DIP Switch Setting
Indoor Unit
Function
Description
SW1 Communication N/A (Default)
SW2 Cycle
N/A (Default)
Selection of Master
SW3 Group Control
or Slave
SW4
Dry Contact
Mode
Selection of Dry
Contact Mode
Setting Off
Setting On
Default
-
-
Off
Off
Master
Slave
Off
Wired/Wireless remote
controller
Selection of Manual or
Auto operation Mode
Auto
Fan continuous
Continuous operation
operation
Removall
SW6 Heater linkage N/A
Ventilator
Selection of
Working
Linkage Removal
linkage
Ventilator linkage
Vane selection Selection of up/down Up side+Down side Up side Vane
SW7
(Console)
side Vane
Vane
Only
Selection tropical
Region selection
General model
Tropical model
region
SW8 Etc.
Spare
SW5 Installation
!
Off
Off
Off
Off
Off
CAUTION
For Multi V Models, DIP switch 1, 2, 6, 8 must be set OFF.
Outdoor Unit
In case that the products meet specific conditions, “Auto addressing” function can start
automatically with the improved speed by turning the DIP switch #3 of the outdoor unit and
resetting the power.
* Specific conditions:
- All names of the indoor units are ARNU****4
- The serial number of Multi V super IV (outdoor units) is after October 2013,
DIP switch
7 segment
Outdoor Unit PCB
Outdoor Unit DIP Switch
INSTALLATION 19
ENGLISH
Group Control Setting
Group Control 1
n Wired remote controller 1+Standard Indoor Units
LGAP Network System
or
Master
Slave
Display Error Message
Slave
Slave
GND
Signal
12 V
Only connect serial signal and
GND lines between indoor units.
Master
n DIP Switch in PCB
① Master Setting
- No. 3 Off
② Slave Setting
- No. 3 On
Outdoor Unit DIP Switch
Some products have no DIP switch on PCB. It is possible to set indoor units to Master or Slave
by using the wireless remote controller instead of DIP switch.
For the details of the setting, please refer to the manual of the wireless remote controller.
1. It is possible to 16 indoor units(Max.) by one wired remote controller.
Set only one indoor unit to Master, set the others to Slave.
2. It is possible to connect with every type of indoor units.
3. It is possible to use wireless remote controller at the same time.
4. It is possible to connect with Dry Contact and Central controller at the same time.
- The Master indoor unit is possible to recognize Dry Contact and Central Controller only.
5. In case that any error occurs at indoor unit, the error code is displayed on the wired remote
controller.
It is possible to control the other indoor units except the error units.
20 INSTALLATION
ENGLISH
* It is possible to connect indoor units since Feb. 2009.
* It can be the cause of malfuctions when there is no setting of master and slave.
* In case of Group Control, it is possible to use following functions.
- Selection of operation, stop or mode
- Temperature setting and room temperature check
- Current time change
- Control of flow rate (High/Middle/Low)
- Reservation settings
- It is not possible at some functions.
Group Control 2
n Wired remote controllers+Standard Indoor Units
LGAP Network System
or
Master
Master
Slave
Slave
Donʼt connect serial 12 V line
Display Error Message
Master
Master
* It is possible to control 16 indoor units(Max.) with the master wired remote control.
* Other than those, it is same with the Group Control 1.
GND
Signal
12 V
INSTALLATION 21
ENGLISH
Group Control 3
n Mixture connection with indoor units and Fresh Air Intake Unit
LGAP Network System
or
FAU
Master
FAU
Slave
Master
GND
Signal
12 V
Slave
N
M
Display Error Message
Display Error Message
Master
Master
* In case of connecting with standard indoor unit and Fresh Air Intake Unit, separate Fresh Air
Intake Unit with standard units. (N, M ≤ 16) (Because setting temperature are different.)
* Other than those, it is same with Group Control 1.
FAU
FAU
Standard
Standard
FAU
FAU
Standard
Standard
* FAU : Fresh Air Intake Unit
Standard: Standard Indoor Unit
22 INSTALLATION
ENGLISH
2 Remote Control
n Wired remote controller 2+Indoor unit 1
LGAP Network System
or
Slave
Master
Slave
Slave
GND
Signal
12 V
Display Error Message
Master
Slave
1. It is possible to connect two wired remote controllers (Max.) with one indoor unit.
Set only one indoor unit to Master, set the others to Slave.
Set only one wired remote controller to Master, set the others to Slave.
2. Every types of indoor unit is possible to connect two remote controller.
3. It is possible to use wireless remote controller at the same time.
4. It is possible to connect with Dry Contact and Central controller at the same time.
5. In case that any error occurs at indoor unit, the error code is displayed on the wired remote
controller.
6. There isn't limits of indoor unit function.
INSTALLATION 23
ENGLISH
Accessories for group control setting
It is possible to set group control by using below accessories.
Indoor unit 2 EA+Wired remote controller 1 EA Indoor unit 1 EA+Wired remote controller 2 EA
* PZCWRCG3 cable used for connection
* PZCWRC2 cable used for connection
Slave
Master
PZCWRC2
PZCWRCG3
Master
!
Master
Slave
CAUTION
Apply totally enclosed noncombustible conduit in case of local building code Requiring plenum
cable usage.
24 INSTALLATION
ENGLISH
Model Designation
ARN
U
24
G
SC
L
4
Serial Number
Combinations of functions
A:Basic function
L: Neo Plasma(Wall Mounted)
C: Plasma(Ceiling Cassette)
G: Low Static
K: High Sensible Heat
U: Floor Standing without Case
SE/S8 - R: Mirror V: Silver B:Blue(ART COOL Type Panel Clolr)
SF
- E: Red V: Silver G:Gold 1: Kiss (Photo changeable)
Q: Console
Z: Fresh Air Intake Unit
Chassis Name
Electrical Ratings
1 : 1Ø, 115 V, 60 Hz
6 : 1Ø, 220 - 240 V, 50 Hz
3 : 1Ø, 208/230 V, 60 Hz
2 : 1Ø, 220 V, 60 Hz
7 : 1Ø, 100 V, 50/60 Hz
G : 1Ø, 220 - 240 V, 50 Hz/1Ø, 220 V, 60 Hz
Total Cooling Capacity in Btu/h
EX) 5 000 Btu/h ➝ '05'
18 000 Btu/h ➝ '18'
Combination of Inverter Type and Cooling Only or Heat Pump
N: AC Inverter and H/P
V: AC Inverter and C/O
U: DC Inverter and H/P and C/O
System with Indoor Unit using R410A
❈ LGETA:U Ex) URN
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.
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. This information, however, will enable the user of the equipment to make a
better evaluation of the hazard and risk.
Limiting 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 (Freon gas weight per unit air volume) for facilitating
calculation
Limiting concentration: 0.44 kg/m3(R410A)
n Calculate refrigerant concentration
Refrigerant concentration =
Total amount of replenished refrigerant in refrigerant facility (kg)
Capacity of smallest room where indoor unit is installed (m3)
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