LG ARUN60GS2A INSTALLATION INSTRUCTIONS
P/NO : MFL67891402
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.
[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
Original instruction
QUICK MANUAL
AIR
CONDITIONER
ENGLISH
ITALIANO
ESPAÑOL
FRANÇAIS
DEUTSCH
ΕΛΛΗΝΙΚΆ
ČEŠTINA
NEDERLANDS
POLSKI
LIMBA ROMÂNĂ
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:
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
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.
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, explo-
sion, or injury.
• Do not install, remove, or re-install the unit
by yourself (customer).
- There is risk of fire, electric shock, explo-
sion, 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 andinstall the unit at the specified place.
- Otherwise it may cause fire, electric shock
and trouble.
• Do not install the product on a defective installation stand.
- It may cause injury, accident, or damage to
the product.
• 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
!
!
!
• 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.
• 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 :
3
ENGLISH
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 se-
curely, 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 appropri-
ate 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.]
• 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 ex-
plosion.
Operation
• Do not damage or use an unspecified power
cord.
- There is risk of fire, electric shock, explo-
sion, 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 prod-
uct damage.
• Do not touch the power switch with wet
hands.
- There is risk of fire, electric shock, explo-
sion, or injury.
• When the product is soaked (flooded or submerged), contact an Authorized Service Cen-
ter.
- 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.
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, gener-
ate 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 gen-
erator, 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
!
4
ENGLISH
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. Cor-
rosion, 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 signifi-
cantly 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 acci-
dent.
• 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 leak-
age.
• Be very careful about product transportation.
- Only one person should not carry the prod-
uct 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.
• 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.
5
ENGLISH
TABLE OF CONTENTS
2 TIPS FOR SAVING ENERGY
2 IMPORTANT SAFETY INSTRUCTIONS
5 INSTALLATION PROCESS
6 OUTDOOR UNITS INFORMATION
6 BEFORE INSTALLATION
7 SELECT THE BEST LOCATION
8 INSTALLATION SPACE
9 INSTALLATION
11 REFRIGERANT PIPING
19 ELECTRICAL WIRING
25 TEST RUN
33 CAUTION FOR REFRIGERANT LEAK
34 INSTALLATION GUIDE AT THE SEASIDE
INSTALLATION PROCESS
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.
• 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.)
!
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
Fit facing panels
Automatic addressing of indoor unit
Test run adjustment
Transfer to customer with explanation
Indicate clearly who is to be responsible for switch settings
Make relationship between outdoor, indoor, remote controller, and
option connections clear. (Prepare control circuit diagram)
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/cm
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
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. (In case of outdoor temperature below 10°C(
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
Outdoor unit foundation work
The foundation must be level even
Installation of outdoor unit
Avoid short circuits and ensure
sufficient space is allowed for service
2
) there must
6
ENGLISH
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.
!
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.
!
Chassis U3 U4
External
Apperance
Outdoor Fan 2 FAN 1 FAN
Phase 1Ø 3Ø 1Ø
PFC PFC PFC Active Filter PFC
Model
Heat
Pump
ARUN50GS2A
ARUN60GS2A
ARUN40LS2A
ARUV50LS2A
ARUN60LS2A
ARUN40LS2B
ARUN50LS2B
ARUN60LS2B
ARUN40GS2A
Cooling
Only
ARUV60GS2A
ARUV40LS2A
ARUV50LS2A
ARUV60LS2A
ARUV40LS2B
ARUV50LS2B
ARUV60LS2B
ARUV50GS2A
ARUV40GS2A
Power Supply : 1Ø, 220~240V, 50Hz / 1Ø, 220V, 60Hz
Connectable Indoor Unit
Heat Pump Model
Chassis
System(HP)
Model
Refrigerant
Product charge kg
CF(Correction Factor)
kg
Max. Connectable No. of Indoor Units
Net Weight(Gross Weight) kg
Dimensions(WxHxD)
mm
inch
Connecting
Pipes
Liquid Pipes
mm
inch
Gas Pipes
mm
inch
Connection Type
U4 U3 U3
456
ARUN40GS2A ARUN50GS2A ARUN60GS2A
1.8 3.0 3.0
000
689
77 106 106
950×834×330 950×1380×330 950×1380×330
37.4×32.8×13.0 37.4×54.3×13.0 37.4×54.3×13.0
9.52 9.52 9.52
3/8 3/8 3/8
15.88 15.88 19.05
5/8 5/8 3/4
FLARE BRAZING BRAZING
Power Supply : 3Ø, 380~415V, 50Hz/ 3Ø, 380V, 60Hz
*A:PFC model, B:Active Filter model
Chassis
System(HP)
Model
Refrigerant
Product charge kg
CF(Correction Factor)
kg
Max. Connectable No. of Indoor Units
Net Weight(Gross Weight) kg
Dimensions(WxHxD)
mm
inch
Connecting
Pipes
Liquid Pipes
mm
inch
Gas Pipes
mm
inch
Connection Type
U3 U3 U3
456
ARUN40LS2* ARUN50LS2* ARUN60LS2*
ARUV40LS2* ARUV50LS2* ARUV60LS2*
3.0 3.0 3.0
-0.5 0 0
689
107 107 107
950 x 1,380 x 330 950 x 1,380 x 330 950 x 1,380 x 330
37.4 x 54.3 x 13.0 37.4 x 54.3 x 13.0 37.4 x 54.3 x 13.0
Ø9.52 Ø9.52 Ø9.52
3/8 3/8 3/8
Ø15.88 Ø15.88 Ø19.05
5/8 5/8 3/4
Cooling Only Model
Chassis
System(HP)
Model
Refrigerant
Product charge kg
CF(Correction Factor)
kg
Max. Connectable No. of Indoor Units
Net Weight(Gross Weight) kg
Dimensions(WxHxD)
mm
inch
Connecting
Pipes
Liquid Pipes
mm
inch
Gas Pipes
mm
inch
Connection Type
U4 U4 U3
456
ARUV40GS2A ARUV50GS2A ARUN60GS2A
1.95 1.95 3.0
000
689
78 78 106
950×834×330 950×834×330 950×1380×330
37.4×32.8×13.0 37.4×32.8×13.0 37.4×54.3×13.0
9.52 9.52 9.52
3/8 3/8 3/8
15.88 15.88 19.05
5/8 5/8 3/4
FLARE FLARE BRAZING
should be connected with "2 series" indoor unit only.
Ex) ARNU07GSEA2
BEFORE INSTALLATION
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.
OUTDOOR UNITS INFORMATION
7
ENGLISH
Transporting the Unit
- 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.
* Product appearance may be different depending on model.
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.
!
SELECT THE BEST LOCATION
1 Select space for installing outdoor unit, which will meet the follow-
ing 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.
2 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.
3 When installing the outdoor unit in a place that is constantly ex-
posed 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.
Air inlet grille
500
Strong
wind
Strong
wind
Blown
air
Turn the air outlet side toward the
building's wall, fence or windbreak
screen.
Set the outlet side at a right angle
to the direction of the wind.
Air outlet grille Intake hole
Always hold the unit by the corners, as holding
it by the side intake holes on the casing may
cause them to deform.
Corner
Handle
A
40° or less
Sub line
WARNING
8
ENGLISH
INSTALLATION SPACE
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.
- Stand alone installation
- Stand alone installation
Obstacle height of discharge side is higher than the unit
- Stand alone installation
Obstacle height of discharge side is lower than the unit
- Stand alone installation
500 or less
1000 or
more
1
00 or
more
500 or less
1000 or
more
150 or
mo
re
150 or
more
150 or
more
[Unit:mm]
100 or
more
100 or
more
100 or
more
100 or
more
500 or
more
500 or less
1000 or
more
500 or
more
1000 or
more
1000 or
more
500 or less
1000 or
more
100 or
more
100
or
more
[Unit:mm]
H
L
L > H
L > H
100 or
more
500 or
more
500 or less
more
1000 or
L
H
250 or
m
ore
1000 or
more
[Unit:mm]
L > H L > H
L
H
300 or
more
1000 or
more
500 or less
1000 or
more
L
H
300 or
more
1250 or more
100 or more
100 or more
[Unit:mm]
L ≤ H L ≤ H
1000 or
more
H
L
100 or
m
or
e
50
0 or
m
or
e
500
or les
s
H
L
300 or
more
1000 or
mor
e
500 or les
s
1000 or
more
300 or
more
10
0 or
m
ore
200 or
more
1000 or
more
300 or
more
100 or
more
1000 or
more
200 or
more
[Unit:mm]
- Collective installation
- Collective installation
L ≤ H L ≤ H
1000 or
more
H
L
300 or
more
1
500 or
more
50
0 or less
H
L
300 or
more
1500 or
more
100 or more
1
00 o
r
more
[Unit:mm]
- Collective installation
- Collective installation
In case of obstacles on the suction side
In case of obstacles on the discharge side
In case of obstacles on the suction and the discharge side
9
ENGLISH
Collective / Continuous Installation for roof top use
Space required for collective installation and continuous installation:
When installing several units, leave space between each block as
shown below considering passage for air and people.
- One row of stand alone installation
100 or
more
2000 or
more
200 or
more
1000 or
more
[Unit:mm]
L
300 or
more
3000 or
more
H
600 or
more
15
00 or
more
100 or
more
L ≤ H
[Unit:mm]
- Rows of collective installation (2 or more)
L should be smaller than H
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.
• 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.
INSTALLATION
Foundation for Installation
- Check the strength and level of the installation ground so that the
unit will not cause any operating vibration or noise after installation.
- Fix the unit securely by means of the foundation bolts. (Prepare 4sets
of M12 foundation bolts, nuts and washers each which are available
on the market.)
- It is best to screw in the foundation bolts until their length are 20mm
from the foundation surface.
Main cause of gas leakage is defect in flaring work. Carry out correct
flaring work in the following procedure.
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
Reamer
Point down
Copper
tube
90°
Slanted Uneven Rough
Preparation of Piping
Flaring work
- Carry out flaring work using flaring tool as shown below.
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.
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Spring washer
Frame
H-Beam
75
100
Nut
200
Foundation bolt executing method
Anti-vibration
Concrete
base
materials
75
Four bolt are
required
3 thread ridges
200
[Unit:mm]
10
ENGLISH
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.
Indoor unit
[kW(Btu/h]
Pipe " A "
Gas Liquid Gas Liquid
<5.6(19,100) 12.7(1/2) 6.35(1/4)
1.6~1.8
(0.63~0.71)
1.1~1.3
(0.43~0.51)
<16.0(54,600) 15.88(5/8) 9.52(3/8)
1.6~1.8
(0.63~0.71)
1.5~1.7
(0.59~0.67)
<22.4(76,400) 19.05(3/4) 9.52(3/8)
1.9~2.1
(0.75~0.83)
1.5~1.7
(0.59~0.67)
Inclined
Inside is shining without scratches.
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Unit : mm(inch)
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 Tightening torque A Flare shape
mm N.m(kgf.cm) mm
Ø9.52
32.7-39.9(327~399)
12.8-13.2
Ø12.7
49.5-60.3(495~603)
16.2-16.6
Ø15.88
61.8-75.4(618~754)
19.3-19.7
Outside diameter Torque
mm inch N.m(kgf.cm)
CAUTION
• 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.
Union
!
Opening shutoff valve
1 Remove the cap and turn the valve counter clockwise with the
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
1 Remove the cap and turn the valve clockwise with the 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
Ø6.35 1/4 18~25(180~250)
Ø9.52 3/8 34~42(340~420)
Ø12.7 1/2 55~66(550~660)
Ø15.88 5/8 63~82(630~820)
Ø19.05 3/4 99~121(990~1210)
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 "KS Standard
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... Adiabatic glass wool
with thickness 10 to 20mm.
- Stick glass wool on all air conditioners that are located in ceiling
atmosphere.
- In addition to the normal heat insulation (thickness: more than
8mm) for refrigerant piping (gas piping: thick piping) and drain piping, add further 10mm to 30mm thickness material.
±2
90°
A
4
5°
±
2
R=0.4~0.8
Indoor unit
Fastening band
(accessory)
Refrigerant piping
Thermal insulator
(accessory)
11
ENGLISH
REFRIGERANT PIPING
U3 Chassis (2 Fan Model)
Braze suitable field piping with service valve of gas pipe.
U4 Chassis (1Fan Model)
- After connecting the refrigerant pipe and checking the refrigerant
leakage, cover it with heat insulator and roll around it with vinyl tape.
Tighten up the flare nut fitting on regulated torque. (Until “clatter”
sounds is made at torque wrench part.)
- Do not bend the pipe more than twice and work on it making it a big
half circle.
If it is folded over, cooling/heating capacity may decrease and it could
be the reason of malfunction.
Do not remove the cap on flare side until the connection.
Dust and sand inside pipes can be the reason of malfunction.
- Bend it following the wall and connect to outdoor unit valve.
Connecting the pipes to the outdoor unit
Possible direction for field piping
CAUTION
Take care so that there is no thermal damage on the service
valves of the outdoor unit.
(Especially packing part of service port.) Wrap the service valve
with a wet towel when brazing it as shown figure above.
!
CAUTION
• You should not dame pipe/base during the work of pipe knock
out.
• Operate piping work removing burr after pipe knock out.
!
CAUTION
• Make sure that pipe doesn't contact with
the compressor terminal cover
and comp bolt.
• Always insulate the liquid and gas-side field
piping and branch.
!
<Gas pipe>
<Liquid pipe>
Wet towel
- The installation piping is connectable in four directions.(refer to figure
1)
- When connecting in a downward direction, knock out the knockout
hole of the base pan.
(refer to figure2, figure3)
Preventing foreign objects from entering (Figure 4)
- Plug the pipe through-holes with putty or insulation material(procured
locally)to stop up all gaps,as shown in the figure 3.
- Insects or small animals entering the outdoor unit may cause a short
circuit in the electrical box.
Forward
Sideways
Downward
Back-
ward
<Figure1>
Base pan
Knock-out
<Figure2>
Gas side piping
(Bigger Dia.)
Liquid side piping
(Smaller Dia.)
Connecting wire
Putty or insulating material
(produced locally)
Drain hose
Connection pipe
<Figure4>
<Figure3>
The centers correspond
with each other
Refrigerant pipe Flare nut
Flare nut
Socket flare
Screw wrench
Torque wrench
Cap
Pipe
Pipe
Pipe
Pipe knock
out during the
ground piping.
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