Please read this installation manual completely before installing the product.
Installation work must be performed in accordance with the national wiring standards by
authorized personnel only.
Please retain this installation manual for future reference after reading it thoroughly.
Original instruction
[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
For more information, Refer to the CD or LG Web site (www.lg.com).
ENGLISH
ITALIANO
ESPAÑOL
FRANÇAIS
DEUTSCH
ČEŠTINA
ΕΛΛΗΝΙΚΆ
NEDERLANDS
POLSKI
LIMBA ROMÂNĂ
2
ENGLISH
TIPS FOR SAVING ENERGY
WARNING
!
Here are some tips that will help you minimize the power consumption
when you use the air conditioner. You can use your air conditioner
more efficiently by referring to the instructions below:
• Do not cool excessively indoors. This may be harmful for your health
and may consume more electricity.
• Block sunlight with blinds or curtains while you are operating the air
conditioner.
• Keep doors or windows closed tightly while you are operating the air
conditioner.
• Adjust the direction of the air flow vertically or horizontally to circulate
indoor air.
• Speed up the fan to cool or warm indoor air quickly, in a short period
of time.
• Open windows regularly for ventilation as the indoor air quality may
deteriorate if the air conditioner is used for many hours.
• Clean the air filter once every 2 weeks. Dust and impurities collected
in the air filter may block the air flow or weaken the cooling / dehumidifying functions.
For your records
Staple your receipt to this page in case you need it to prove the date of
purchase or for warranty purposes. Write the model number and the
serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
• Installation 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.
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
!
• 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.
It can result in minor injury or product damage
when the directions are ignored
• Do not store or use flammable gas or combustibles near the air conditioner.
- There is risk of fire or failure of product.
• Use the correctly rated breaker or fuse.
- There is risk of fire or electric shock.
• Prepare for strong wind or earthquake and
install the unit at the specified place.
- Improper installation may cause the unit to
topple and result in injury.
• Do not install the product on a defective installation stand.
- It may cause injury, accident, or damage to
the product.
• Use a vacuum pump or Inert(nitrogen) gas
when doing leakage test or air purge. Do not
compress air or Oxygen and do not use
Flammable gases. Otherwise, it may cause
fire or explosion.
- There is the risk of death, injury, fire or ex-
plosion.
3
ENGLISH
from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, harzards due to lack of oxygen in
the room could result.
Operation
• 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.
• 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 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
• 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 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.
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
4
ENGLISH
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
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.
• 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 leak-
age.
• 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.
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.
• Turn on the power at least 6 hours before
starting operation.
- Starting operation immediately after turn-
ing on the main power switch can result in
severe damage to internal parts. Keep the
power switch turned on during the operational season.
• Do not touch any of the refrigerant piping
during and after operation.
- It can cause a burn or frostbite.
• Do not operate the air conditioner with the
panels or guards removed.
- Rotating, hot, or high-voltage parts can
cause injuries.
• Do not directly turn off the main power
switch after stopping operation.
- Wait at least 5 minutes before turning off
the main power switch. Otherwise it may
result in water leakage or other problems.
• Auto-addressing should be done in condition
of connecting the power of all indoor and
outdoour units. Auto-addressing should also
be done in case of changing the indoor unit
PCB.
• Use a firm stool or ladder when cleaning or
maintaining the air conditioner.
- Be careful and avoid personal injury.
• Do not insert hands or other objects through
the air inlet or outlet while the air conditioner is plugged in.
- There are sharp and moving parts that
could cause personal injury.
TABLE OF CONTENTS
2TIPS FOR SAVING ENERGY
2IMPORTANT SAFETY INSTRUCTIONS
6INSTALLATION PROCESS
6OUTDOOR UNITS INFORMATION
8ALTERNATIVE REFRIGERANT R410A
8SELECT THE BEST LOCATION
9INSTALLATION SPACE
9Individual Installation
9LIFTING METHOD
10 INSTALLATION
10The location of the Anchor bolts
10Foundation for Installation
10Preparation of Piping
Plumbing materials and storage methods
12
12 REFRIGERANT PIPING INSTALLATION
12Precautions on Pipe connection / Valve operation
13
PIPE CONNECTIONS BETWEEN INDOOR AND
OUTDOOR UNIT
13Preparation Work
13Pipe Drawing Out during Single / Series connection
14Refrigerant piping system
14Pipe Connection Method between outdoor unit/indoor unit
17Refrigerant charging
18Distribution Method
18Branch pipe Fitting
19Leak Test and Vacuum drying
20Vacuum Mode
21Thermal insulation of refrigerant piping
5
ENGLISH
21 ELECTRICAL WIRING
21Caution
22Control box and connecting position of wiring
23Communication and Power Cables
23Wiring of main power supply and equipment capacity
Point for attention regarding quality of the public electric power supply
24
24Field Wiring
26Checking the setting of outdoor units
26Automatic Addressing
27Group Number setting
27Cool & Heat selector
27Static pressure compensation mode
28Night Low Noise Function
28Overall defrost mode
28Setting the ODU address
28Snow removal & rapid defrost
29IDU capacity adjusting
29Target pressure adjusting
29 Comfort Operation
30Self-Diagnosis Function
32 CAUTION FOR REFRIGERANT LEAK
32Introduction
32Checking procedure of limiting concentration
33 INSTALLATION GUIDE AT THE SEASIDE
6
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.
Airtight 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.
ENGLISH
INSTALLATION PROCESS
Power Supply : 3Ø, 380V, 60Hz or 3Ø, 380 - 415V, 50Hz
Model Name : ARUN***LTE4
Unit
System(HP)
Combination Unit
Model
Independent Unit
Refrigerant
Precharged Amount
Number of maxmum connectable indoor units
Net Weight
Dimensions
(WxHxD)
Piping Conections
Unit
System(HP)
Model
Refrigerant
Precharged Amount
Number of maxmum connectable indoor units
Net Weight
Dimensions
(WxHxD)
Piping Conections
kg
lbs
kg
lbs
mm(920×1,680×760) × 1(920×1,680×760) × 1(920×1,680×760) × 1
inch
• 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.)
OUTDOOR UNITS INFORMATION
CAUTION
!
Combination Ratio(50~200%)
Outdoor NumberConnection Ratio
Single outdoor units200%
Double outdoor units160%
Triple outdoor units130%
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.
• If the operation of indoor unit is more than 130%, the airflow is
operated as low in the all indoor units.
• The number of ( ) means the number of Max. connectable
indoor units, when the connected capacity of indoor units is in
the table above.
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.
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.
- 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.)
9
A
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D
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AE
B
F
C
D
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F
C
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h2
h1
1500
A
B
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AE
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240 or
more
50 or more
45° or
more
INSTALLATION SPACE
Individual Installation
During the installation of the unit, consider service, inlet, and outlet
acquire the minimum space as shown in the figures below.
Category
4 sides
are
walls
Rear
to
Rear
Only 2
sides
are
walls
Limita-
tions on
the
height
of the
wall
(Refer
to 4 side
walls)
Installation Space
Case 1
(10mm≤Side Space≤49mm)
A≥10
B≥300
C≥10
D≥500
A≥10
B≥300
C≥10
D≥500
E≥20
A≥10
B≥300
C≥10
D≥500
E≥20
F≥600
A≥10
B≥300
C≥10
D≥300
E≥20
F≥500
A≥10
B≥500
C≥10
D≥500
E≥20
F≥900
A≥10
B≥500
C≥10
D≥500
E≥20
F≥1200
A≥10
B≥500
C≥10
D≥500
E≥20
F≥1800
A≥10
B≥300
A≥200
B≥300
E≥400
• 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.
• There is no limit to the wall on the side.
• If the height of the walls on the front and
the side are higher than the limit, there
must be additional space on the front and
the side.
- Additional Space on the front side by
1/2 of h1
- Additional Space on the inlet side by 1/2
of h2
- h1 = A(Actual height) - 1500
- h2 = B(Actual height) - 500
Case 2
(Side Space≥49mm)
A≥50
B≥100
C≥50
D≥500
A≥50
B≥100
C≥50
D≥500
E≥100
A≥50
B≥100
C≥50
D≥500
E≥100
F≥500
A≥50
B≥100
C≥50
D≥100
E≥100
F≥500
A≥50
B≥500
C≥50
D≥500
E≥100
F≥600
A≥50
B≥500
C≥50
D≥500
E≥100
F≥900
A≥50
B≥500
C≥50
D≥500
E≥100
F≥1200
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.
- 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.
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
Forklift Carrying Hole
Forklift Carrying Guide
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.
ENGLISH
10
At least 100mm
At least 100m
m
At least 100mm
At least 100mm
At least 100mm
At least 100mm
Center of the Unit
For outdoor units
should not be
supported only by
the corner supports.
Center of the Unit
730
760
6565
Unit : mm
At least 65At least 65
At least
200mm
Unit : mm
200
75
75
200
100
Pallet(Wood Support)
- Remove before Installation
Pipe
Reamer
Point down
Copper
tube
90
Slanted Uneven Rough
ENGLISH
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’s legs before being fixed.
• The outdoor unit supports should have minimum height of 200mm.
• Anchor bolts must be inserted at least 75mm.
The location of the Anchor bolts
Ⓐ The corner part must be fixed firmly. Otherwise, the support for the
installation may be bent.
Ⓑ Get and use M10 Anchor bolt.
Ⓒ Put Cushion Pad between the outdoor unit and ground support for
the vibration protection in wide area.
Ⓓ Space for pipes and wiring (Pipes and wirings for bottom side)
Ⓔ H-beam support
Ⓕ Concrete support
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.
ChassisOutdoor Unit CapacityA(mm)B(mm)
Foundation for Installation
• Fix the unit tightly with bolts as shown below so that unit will not fall
down due to earthquake or gust.
• Use the H-beam support as a base support
• Noise and vibration may occur from the floor or wall since vibration is
transferred through the installation part depending on installation status. Thus, use anti-vibration materials (cushion pad) fully (The base
pad shall be more than 200mm).
UX28~12 HP920792
UX314~20 HP12401102
CAUTION
!
• 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.
Preparation of Piping
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.
11
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Inclined
Inside is shining without scratches.
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Union
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.
Flaring work
- Carry out flaring work using flaring tool as shown below.
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.
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.
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
Tightening torque N·m(Turn clockwise to close)
Shutoff
valve
size
ClosedOpened
Ø6.35
6.0±0.6
Ø9.5238±4
Ø12.710.0±1.020.0±2.055±6
Ø15.8812.0±1.2
Ø19.0514.0±1.4110±10
Ø22.2
30.0±3.08mm-
Ø25.425±3
Shaft
(valve body)
Hexagonal
5.0±0.0
wrench
4mm
5mm
Cap
(Valve lid)
17.6±2.0
25.0±2.5
Service
port
12.7±2
Gas line piping
Flare
nut
attached to unit
16±2
75±7
-
ENGLISH
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
Ø9.5238±412.8-13.2
Ø12.755±6 16.2-16.6
Tightening
torque(N·m)
A(mm)Flare shape
±2
90°
4
5°
±
A
R=0.4~0.8
2
Ø15.8875±7 19.3-19.7
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.
Insulation of shutoff valve
1 Use the heat insulation material for the refrigerant piping which has
an excellent heat-resistance (over 120°C).
2 Precautions in high humidity circumstance:
This air conditioner has been tested according to the "ISO Conditions with Mist" and confirmed that there is not any default. However, if it is operated for a long time in high humid atmosphere
(dew point temperature: more than 23°C), water drops are liable to
fall. In this case, add heat insulation material according to the following procedure:
- Heat insulation material to be prepared... EPDM (Ethylene Propylene Diene Methylene)-over 120°C the heat-resistance temperature.
- Add the insulation over 10mm thickness at high humidity environment.
Indoor unit
.
Fastening band
(accessory)
Refrigerant piping
Thermal insulator
(accessory)
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