LG MULTI V MINI ARUN047GS2, MULTI V MINI ARUN036GS2, MULTI V MINI ARUN053GS2 Installation Manual
System
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.
INSTALLATION MANUAL
AIR
CONDITIONER
P/NO : MFL46912318
Copyright © 2010 - 2018 LG Electronics Inc. All Rights Reserved.
ENGLISH
FRANCAIS
ESPAÑOL
IMPORTANT!
Please read this instruction sheet completely before installing the product.
This air conditioning system meets strict safety and operating standards. As the installer or service
person,it is an important part of your job to install or service the system so it operates safely and
efficiently.
WARNING
• Installation or repairs made by unqualified persons can result in hazards to you and others.
Installation MUST conform with local building codes or, in the absence of local codes, with the National Electrical
Code NFPA 70/ANSI C1-1993 or current edition and Canadian Electrical Code Part1 CSA C.22.1.
• 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.
CAUTION
Safety Precautions
NOTE TO INSTALLING DEALER: The Owners Instructions and Warranty are to be given to the owner
: Improper installation, adjustment, alteration, service or maintenance can void the warranty.
The weight of the condensing unit requires caution and proper handling procedures when lifting
or moving to avoid personal injury. Use care to avoid contact with sharp or pointed edges.
• Always wear safety eye wear and work gloves when installing equipment.
• Never assume electrical power is disconnected. Check with meter and equipment.
• Keep hands out of fan areas when power is connected to equipment.
• R-410A causes frostbite burns.
• R-410A is toxic when burned.
or prominently displayed near the indoor Furnace/Air Handler Unit.
Special warnings
When wiring:
Electrical shock can cause severe personal injury or death. Only a qualified,
experienced electrician should attempt to wire this system.
• Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked.
• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these
instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.
• Ground the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.
When transporting:
Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and
bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on
the air conditioner can cut your finger.
When installing...
... in a wall: Make sure the wall is strong enough to hold the unit's weight.
... in a room: Properly insulate any tubing run inside a room to prevent "sweating" that can cause
... in moist or uneven locatinons: Use a raised concrete pad or concrete blocks provide a solid,
... in an area with high winds: Securely anchor the outdoor unit down with bolts and a metal
... in a snowy area(for Heat Pump Model): Install the outdoor unit on a raised platform that is
It may be necessary to construct a strong wood or metal frame to provide added support.
dripping and water damage to wall and floors.
level foundation for the outdoor unit. This prevents water damage and abnormal vibration.
frame. Provide a suitable air baffle.
higher than drifting snow. Provide snow vents.
When connecting refrigerant tubing
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Check carefully for leaks before starting the test run.
When servicing
• Turn the power OFF at the main power box(mains) before opening the unit to check or repair
electrical parts and wiring.
• Keep your fingers and clothing away from any moving parts.
• Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have
been left inside the unit being serviced.
2 Outside Unit
ARUN Series Outdoor Unit Installation Manual
TABLE OF CONTENTS
Safety Precautions......................................................................................................4
Installation Process....................................................................................................8
Outdoor Units Information.........................................................................................9
Before installation.....................................................................................................10
Select the Best Location ..........................................................................................11
ENGLISH
Installation Space .....................................................................................................12
Installation.................................................................................................................16
Refrigerant piping.....................................................................................................19
Electrical Wiring........................................................................................................38
Test Run.....................................................................................................................53
Caution For Refrigerant Leak ..................................................................................63
Installation guide at the seaside..............................................................................65
Installation Manual 3
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must
be followed.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
n Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
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, 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.
4 Outside Unit
Safety Precautions
• When installing and moving the air conditioner to another site, do not charge it with a
different refrigerant from the refrigerant specified on the unit.
- If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle
may malfunction and the unit may be damaged.
• 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,
harzards due to lack of oxygen in the room could result.
ENGLISH
• 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.
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.
Installation Manual 5
Safety Precautions
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 installting the unit in a hospital, communication station, or similar place, provide
sufficient protection against noise.
- The inverter equipment, private power generator, high-frequency medical equipment, or
radio communication equipment may cause the air conditioner to operate erroneously, or
fail to operate. On the other hand, the air conditioner may affect such equipment by
creating noise that disturbs medical treatment or image broadcasting.
• 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.
6 Outside Unit
Safety Precautions
• 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 20kg (44lbs).
- 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.
ENGLISH
• 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.
Installation Manual 7
Installation Process
Installation Process
Determination of division work
Preparation of contract drawings
Sleeve and insert work
Installation of indoor unit
Refrigerant piping work
Drain pipe work
Duct work
Heat insulation work
Electrical work
(connection circuits and drive circuits)
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)
Outdoor unit foundation work
Installation of outdoor unit
The foundation must be level even
Avoid short circuits and ensure
sufficient space is allowed for service
Airtight test
Vacuum drying
Additional charge of refrigerant
Fit facing panels
Automatic addressing of indoor unit
Test run adjustment
Transfer to customer with explanation
In the final check for 24hours at 3.8 MPa(511.1 psi) there must be no drop in pressure.
The vacuum pump used must have a capacity of reaching at least 5 torr, more than 1 hour
Recharge correctly as calculated in this manual. and record the amount of added refrigerant
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 10C (50F)(
Run each indoor unit in turn to make sure the pipe work has been fitted correctly
Explain the use of the system as clearly as possible to your customer and make sure all relevant
documentation is in order
• The above list indicates the order in which the individual work operations are normally carried out but this
order may be varied where local conditions warrants such change.
• The wall thickness of the piping should comply with the relevant local and national regulations for the
designed pressure 3.8Mpa (511.1 psi).
• 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.)
8 Outside Unit
Outdoor Units Information
CAUTION
Outdoor Units Information
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.
Power Supply: Outdoor Unit (1Ø, 208/230V, 60Hz)
System(HP)
Model
Refrigerant Product charge kg(lbs)
Max. Connectable No. of Indoor Units
Net Weight kg(lbs)
Dimensions mm
(WxHxD) inch
Connecting Pipes
Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
45 6
ARUN036GS2 ARUN047GS2 ARUN053GS2
3.0(6.61) 3.0(6.61) 3.0(6.61)
68 9
106(233.7) 106(233.7) 106(233.7)
950×1,380×330 950×1,380×330 950×1,380×330
37.4×54.3×13 37.4×54.3×13 37.4×54.3×13
9.52(3/8) 9.52(3/8) 9.52(3/8)
15.88(5/8) 15.88(5/8) 19.05(3/4)
Connectable Indoor Unit
should be connected with "2 series" indoor unit only.
ENGLISH
Ex) ARNU073TRC2
Installation Manual 9
Before Installation
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.
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.
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.
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.
CAUTION:
Be very careful while carrying the product.
- Do not have only one person carry product if it is more than 20 kg (44.1 lbs).
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.
Corner
Handle
A
40° or less
Sub line
WARNING
10 Outside Unit
Select the Best Location
Select the Best Location
1. 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.
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 exposed 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 500 mm (19-5/8 inch) 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.
ENGLISH
Air inlet grille
Turn the air outlet side toward the building's wall,
fence or windbreak screen.
Strong
wind
Strong
wind
Blown
air
500 mm
(19-5/8 inch)
Set the outlet side at a right angle
to the direction of the wind.
Installation Manual 11
Installation Space
100(3-15/16)
or more
100(3-15/16)
or more
100(3-15/16)
or more
100(3-15/16)
or more
1000 (39-1/4)
or more
100(3-15/16)
or more
500(19-5/8)
or less
500(19-5/8)
or less
500(19-5/8)
or less
1000 (39-1/4)
or more
1000 (39-1/4)
or more
150(3-15/16)
or more
150(3-15/16)
or more
150(3-15/16)
or more
100(3-10/11)
or more
100(3-15/16)
or more
200(7-7/8)
or more
200(7-7/8)
or more
1000 (39-1/4)
or more
1000 (39-1/4)
or more
300(11-7/8)
or more
300(11-7/8)
or more
Unit:mm(inch)
Unit:mm(inch)
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.
n In case of obstacles on the suction side
1. Stand alone installation
2. Collective installation
12 Outside Unit
n In case of obstacles on the discharge side
500(19-5/8) or more
500(19-5/8)
or less
1000 (39-1/4)
or more
1000 (39-1/4)
or more
1000 (39-1/4)
or more
500(19-5/8) or more
1000 (39-1/4)
or more
1000 (39-1/4)
or more
H
L
L > HL > H
100(3-15/16)
or more
500(19-5/8)
or more
500(19-5/8) or less
L
H
250 (9-7/8)
or more
1000 (39-1/4)
or more
100(3-15/16)
or more
100(3-15/16)
or more
Unit:mm(inch)
Unit:mm(inch)
500(19-5/8) or less
1. Stand alone installation
2. Collective installation
Installation Space
ENGLISH
n In case of obstacles on the suction and the discharge side
Ú Obstacle height of discharge side is higher than the unit
1. Stand alone installation
Installation Manual 13
Installation Space
2. Collective installation
500(19-5/8)
or less
L > H L > H
H
L
H
100(3-15/16)
or more
1000 (39-1/4)
or more
300(11-7/8)
or more
100(3-15/16)
or more
1250(49-1/4)
Ú Obstacle height of discharge side is lower than the unit
1. Stand alone installation
500(19-5/8) or less
L H L H
H
or more
or more
1000 (39-1/4)
L
300(11-7/8)
or more
Unit:mm(inch)
or more
1000 (39-1/4)
H
L
100(3-15/16)
or more
500(19-5/8)
or less
2. Collective installation
L H L H
H
L
100(3-15/16)
or more
1500(59)
300(11-7/8)
or more
or more
L
300(11-7/8)
or more
1000 (39-1/4)
or more
500(19-5/8)
or less
or more
1000 (39-1/4)
H
L
100(3-15/16)
or more
300(11-7/8)
1500(59)
or more
or more
Unit:mm(inch)
14 Outside Unit
Installation Space
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.
1. One row of stand alone installation
100(3-15/16)
or more
2000(78-3/4)
or more
200(7-7/8)
or more
1000 (39-1/4)
or more
2. Rows of collective installation (2 or more)
Unit:mm(inch)
ENGLISH
• L should be smaller than H
L ≤ H
H
100(3-15/16) or
1500(59)
or more
more
3000(118-1/8)
600(23-5/8)
or more
or more
L
300(11-7/8)
or more
Unit:mm(inch)
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 500mm(19-11/16) than the average snowfall (annual average snowfall) if it is installed at the area with much snowfall.
1. The height of H frame must be more than 2 times the snowfall and its width shall not exceed the width of the
product. (If width of the frame is wider than that of the product, snow may accumulate)
2. Don't install the suction hole and discharge hole of the Outdoor Unit facing the seasonal wind.
Installation Manual 15
Installation
A
B
C
Foundation bolt executing method
200 (7-7/8)
Nut
75 (3)
75 (3)
200 (7-7/8)
Spring washer
Frame
Anti-vibration
materials
Four bolt are
required
3 thread ridges
H-Beam
Concrete
base
100(3-15/16)
Installation
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
200 mm (7-7/8 inch)).
If it is necessary to prevent the unit from falling over, install as shown in the figure.
• Prepare all 4 wires as indicated in the drawing
• Unscrew the top plate at the 4 location indicated A and B
• Put the screws through the nooses and screw them back tight
A : Location of the 2 fixation holes on
the front side of the unit
B : Location of the 2 fixation holes on
the rear side of the unit
C : wires
16 Outside Unit
Installation
Copper
tube
90°
Slanted Uneven Rough
Pipe
Reamer
Point down
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 =
Preparation of Piping
Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure.
1) Cut the pipes and the cable.
n Use the accessory piping kit or the pipes purchased
locally.
n Measure the distance between the indoor and the out-
door unit.
n Cut the pipes a little longer than measured distance.
n Cut the cable 1.5m longer than the pipe length.
2) Burrs removal
n Completely remove all burrs from the cut cross section
of pipe/tube.
n Put the end of the copper tube/pipe to downward direc-
tion as you remove burrs in order to avoid to let burrs
drop in the tubing.
3) Flaring work
n Carry out flaring work using flaring tool as shown right.
ENGLISH
Unit : mm(inch)
Indoor unit
[kW(Btu/h]
<5.6(19,100) 12.7(1/2) 6.35(1/4)
<16.0(54,600) 15.88(5/8) 9.52(3/8)
<22.4(76,400) 19.05(3/4) 9.52(3/8)
Pipe " A "
Gas Liquid Gas Liquid
1.6~1.8 1.1~1.3
(0.63~0.71) (0.43~0.51)
1.6~1.8 1.5~1.7
(0.63~0.71) (0.59~0.67)
1.9~2.1 1.5~1.7
(0.75~0.83) (0.59~0.67)
Firmly hold copper tube in a bar(or die) as indicated
dimension in the table above.
4) Check
n Compare the flared work with figure right.
n If flare is noted to be defective, cut off the flared section
and do flaring work again.
Installation Manual 17
Installation
90°
±2
45°
±2
A
R=0.4~0.8
Union
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(mm/inch) Tightening torque
(Kgf·m/lbf·ft)
A (mm /inch) flare shape
Ø9.52 (3/8) 3.4-4.2(24.6-30.4) 12.6-13.0 (1/2)
Ø12.7 (1/2) 5.5-6.6(39.8-47.7) 15.8-16.2 (5/8)
Ø15.88 (5/8) 6.3-8.2(45.6-59.3) 19.0-19.4(3/4)
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.
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.
18 Outside Unit
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.
Installation
Tightening torque
Outside diameter Torque
mm inch N.m(kgf•cm)
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 248°F).
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 73°F), 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 248°F
the heat-resistance temperature.
• Add the insulation over 10mm thickness at high humidity environment.
Indoor unit
Fastening band
(accessory)
Refrigerant piping
Thermal insulator
(accessory)
ENGLISH
Installation Manual 19
Refrigerant Piping
<Gas pipe>
<Liquid pipe>
Wet towel
Forward
Sideways
Backward
Base pan
Downward
Knock-out
<Figure 1>
<Figure 2>
<Figure 4>
Gas side piping
(Bigger Dia.)
Liquid side piping
(Smaller Dia.)
Putty or insulating material
(produced locally)
Drain hose
Connecting wire
Connection pipe
Refrigerant Piping
n Connecting the pipes to the outdoor unit
• Braze suitable field piping with service valve of gas pipe.
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.
n Possible direction for field piping
n Preventing foreign objects from
• The installation piping is connectable in four direc-
tions.(refer to figure 1)
• Plug the pipe through-holes with putty or insulation
• When connecting in a downward direction, knock out
the knockout hole of the base pan.
(refer to figure2, figure3)
• Insects or small animals entering the outdoor unit
entering (Figure 4)
material(procured locally)to stop up all gaps,as
shown in the figure 3.
may cause a short circuit in the electrical box.
<Figure 3>
20 Outside Unit
Pipe knock
out during the
ground piping.
CAUTION
• You should not dame pipe/base during the work of
pipe knock out.
• Operate piping work removing burr after pipe knock
out.
CAUTION
1
2
3
4
1
2
• 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.
Cautions for Handling Service Valve
• The service valves are closed at shipment from the factory
CAUTION
Make sure to keep the valve open during operation
Refrigerant Piping
ENGLISH
The names of parts of the service valve are
shown in the figure.
• since the side boards may be deformed if only a torque wrench is used when loosening or tightening flare nuts,
always lock the shut-off valve with a wrench and then use a torque wrench.
Do not place wrenches on the valve cover.
Do not apply force on the valve cover, this may result in a refrigerant leak.
1. Service point
2. Shut-off Valve
3. Filed piping connection
4. Valve cover
1. Spanner
2. Torque wrench
Installation Manual 21
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