website http://www.lgservice.com
LG
System
Heat Recovery Outdoor Unit R410A
INSTALLATION MANUAL
MODELS: ARUB Series
ESPAÑOL FRANÇAIS ENGLISH
IMPORTANT
•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.
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: 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.
Safety Precautions
•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.
NOTE TO INSTALLING DEALER: The Owners Instructions and Warranty are to be given to the owner 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.
It may be necessary to construct a strong wood or metal frame to provide added support.
... in a room: Properly insulate any tubing run inside a room to prevent "sweating" that can cause dripping and water damage to wall and floors.
... in moist or uneven locatinons: Use a raised concrete pad or concrete blocks provide a solid, level foundation for the outdoor unit. This prevents water damage and abnormal vibration.
... in an area with high winds: Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.
... in a snowy area(for Heat Pump Model): Install the outdoor unit on a raised platform that is 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 
Outdoor Unit
ARUB Series Outdoor Unit Installation Manual
TABLE OF CONTENTS
ENGLISH
Safety Precautions................................ |
4 |
Installation Process ............................ |
12 |
Outdoor Unit Information ................... |
14 |
Environment-friendly Alternative |
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Refrigerant R410A............................... |
15 |
Select the Best Location .................... |
15 |
Installation Space ............................... |
17 |
Lifting method ..................................... |
20 |
Installation ........................................... |
22 |
Refrigerant piping installation........... |
24 |
Electrical Wiring.................................. |
41 |
HR unit PCB......................................... |
49 |
Main PCB ............................................. |
60 |
Test Run............................................... |
67 |
Caution For Refrigerant Leak ............ |
80 |
Installation guide at the seaside........ |
82 |
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.
■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.
■ 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. |
Always intstall a dedicated circuit and breaker. |
• There is risk of fire or electric shock.
•Improper wiring or installation may cause fire or electric shock.
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Outdoor Unit
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Safety Precautions |
For re-installation of the installed product, |
Do not install, remove, or re-install the unit |
always contact a dealer or an Authorized |
by yourself (customer). |
Service Center. |
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• There is risk of fire, electric shock, explosion, or |
• There is risk of fire, electric shock, explosion, or |
injury. |
injury. |
Do not store or use flammable gas or |
Use the correctly rated breaker or fuse. |
combustibles near the air conditioner. |
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• There is risk of fire or failure of product. |
• There is risk of fire or electric shock. |
ENGLISH
Gasolin
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.
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 install the product on a defective installation stand.
•It may cause injury, accident, or damage to the product.
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.
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R410A |
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R22 |
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R407C |
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Installation Manual 5
Safety Precautions
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.
Don't use the existing manifold gage for R22 refrigerant.
•Use the manifold gage for high pressure (R410A) as possible as for stable refrigerant filling.
Don't mix and use the R22 pipe and the installation appliances that were used until now
•Mixing the oil of R22 and R410A may cause failure of the unit due to hydrolysis.
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Outdoor Unit
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Safety Precautions |
■ Operation |
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Do not damage or use an unspecified power |
Use a dedicated outlet for this appliance. |
cord. |
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• There is risk of fire, electric shock, explosion, or |
• There is risk of fire or electrical shock. |
injury. |
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Be cautious that water could not enter the product.
• There is risk of fire, electric shock, or product damage. 
Take care so that children should not randomly operate the wire remote control for play.
•Frequent conversion to cold or heat mode may cause failure of the unit.
Be cautious not to touch the sharp edges when installing.
• It may cause injury.
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.
Take care to ensure that nobody could step on or fall onto the outdoor unit.
•This could result in personal injury and product damage.
ENGLISH
Installation Manual 7
Safety Precautions
Do not open the inlet grill 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
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.
Do not install the unit where combustible gas may leak.
• To avoid vibration or water leakage.
•If the gas leaks and accumulates around the unit, an explosion may result.
90˚
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.
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Outdoor Unit
Safety Precautions
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.
ENGLISH
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.
Installation Manual 9
Safety Precautions
Make the connections securely so that the outside force of the cable may not be applied to the terminals.
Be sure the installation area does not deteriorate with age.
•Inadequate connection and fastening may generate heat and cause a fire.
•If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.
Install and insulate the drain hose to ensure that water is drained away properly based on the installation manual.
• A bad connection may cause water leakage.
Be very careful about product transportation.
• Only one person should not carry the product if it weighs more than 20 kg.
• Some products use PP bands for packaging. Do not use any PP bands for a means of transportation. It is dangerous.
• Do not touch the heat exchanger fins. Doing so may cut your fingers.
• When transporting the outdoor unit, suspending it at the specified positions on the unit base. Also support the outdoor unit at four points so that it cannot slip sideways.
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.(In case of outdoor temperature below 10°C)
•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.
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Outdoor Unit
Safety Precautions
Do not touch any of the refrigerant piping during and after operation.
• It can cause a burn or frostbite.
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.
Do not operate the air conditioner with the panels or guards removed.
•Rotating, hot, or high-voltage parts can cause injuries. 
Auto-addressing should be done in condition of connecting the power of all indoor and outdoor units. Auto-addressing should also be done in case of changing the Indoor unit PCB.
Use a firm stool or ladder when cleaning or |
Do not insert hands or other objects through |
maintaining the air conditioner. |
the air inlet or outlet while the air conditioner |
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• Be careful and avoid personal injury. |
• There are sharp and moving parts that could |
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cause personal injury. |
Avoid a place where rain may enter since the |
Install the HR unit at a place in which it is not |
HR unit is for indoor |
affected by operation mode changing noise. |
• There is risk of property damage, failure of prod- |
• Installation within cell such as meeting room etc, |
uct or electric shock. |
may disturb business due to noise. |
ENGLISH
Installation Manual 11
Installation Process
Installation Process
Determination of division work |
Indicate clearly who is to be responsible for switch settings |
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Preparation of contract drawings |
Make relationship between outdoor, indoor, remote controller, and option connections clear. |
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(Prepare control circuit diagram) |
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Sleeve and insert work
Installation of indoor unit and HR unit
Refrigerant piping work
Drain pipe work
Duct work
Heat insulation work
Electrical work
(connection circuits and drive circuits)
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 shouldbe selected)
Outdoor unit foundation work
Installation of outdoor unit
The foundation must be level
Avoid short circuits and ensure sufficient space is allowed
for service
Airtight Test
Vacuum drying
Additional charge of refrigerant
Automatic addressing for Indoor units and pipe detection
Fit facing panels
Test run adjustment
Transfer to customer with explanation
In the final check for 24hours at 3.80 MPa(38.7 kgf/cm2) 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
Refer to automatic addressing for Indoor units and pipe detection. Preheat the crank case with the electrical heater for more than 6 hours. (In case of the outdoor temperature below 10°C(50˚F))
Make sure there are no gaps left between the facing materials used on the ceiling
Run each indoor unit in turn to make sure the pipe work has been fitted correctly
Explain the proper use of the system as clearly as possible to your customer and make sure all relevant documentations are in order.
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.
Make sure additional charge the refrigerant before automatic addressing of indoor and pipe searching.
12 
Outdoor Unit
Installation Process
CAUTION
1.Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.
2.Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient performance.
3.If outdoor unit is installed close to the seaside, it should avoid direct exposure to the sea wind. Otherwise it needs additional anticorrosion treatment on the heat exchanger.
Selecting the location(Outdoor Unit)
1)If the outdoor unit is to be installed close to the seaside, direct exposure to the sea wind should be avoided. Install the outdoor unit on the opposite side of the sea wind direction.
Sea wind |
Sea wind |
2) In case, to install the outdoor unit on the seaside, set up a windbreak not to be exposed to the sea wind.
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Windbreak |
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the sea wind from the sea. |
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• The height and width should be more than 150% of |
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Sea wind |
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the outdoor unit. |
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• It should be keep more than 27.6 inch of space |
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between outdoor unit and the windbreak for easy |
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air flow. |
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3)Select a well-drained place.
1.If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment.
2.Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water
ENGLISH
Installation Manual 13
Outdoor Units Information
Outdoor Units Information
CAUTION: Ratio of the connectable Indoor Units to the Outdoor: Within 50 ~ 130% Ratio of the running Indoor Units to the Outdoor: Within 10 ~ 100%
A combination operation over 100% cause to reduce the total capacity.
Power Supply: Outdoor Unit (3Ø, 208/230V, 60Hz)
■ Heat pump
Unit |
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1 Outdoor Unit |
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2 Outdoor Units |
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Model(HP(Ton)) |
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8(6.5) |
10(8.0) |
12(9.5) |
16(12.5) |
Model |
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ARUB076BT2 |
ARUB096BT2 |
ARUB115BT2 |
ARUB154BT2 |
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ARUB076BT2 |
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ARUB076BT2 |
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Product Charge |
kg(lbs) |
8(17.6) |
8(17.6) |
8(17.6) |
8+8(17.6+17.6) |
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CF(Correction Factor) |
kg(lbs) |
-1(-2.2) |
0(0) |
1(2.2) |
-2(-4.4) |
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Max. Connectable No. of Indoor Units |
13 |
16 |
19 |
26 |
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Net Weight |
kg |
285 |
285 |
285 |
285+285 |
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lbs |
628 |
628 |
628 |
628+628 |
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Dimensions |
mm |
1,280x1,607x730 |
1,280x1,607x730 |
1,280x1,607x730 |
(1,280x1,607x730)x2 |
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(WxHxD) |
inch |
50-3/8 x 63-5/16 x 28-11/16 |
50-3/8 x 63-5/16 x 28-11/16 |
50-3/8 x 63-5/16 x 28-11/16 |
(50-3/8 x 63-5/16 x 28-11/16)x2 |
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Connecting Pipes |
Liquid Pipes[mm(inch)] |
9.52(3/8) |
9.52(3/8) |
12.7(1/2) |
12.7(1/2) |
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Low Pressure Pipes[mm(inch)] |
19.05(3/4) |
22.2(7/8) |
28.58(1 1/8) |
28.58(1 1/8) |
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High Pressure Gas Pipes[mm(inch)] |
15.88(5/8) |
19.05(3/4) |
19.05(3/4) |
22.2(7/8) |
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Unit |
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2 Outdoor Unit |
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Model(HP(Ton)) |
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18(14.5) |
20(16.0) |
22(17.5) |
24(19.0) |
Model |
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ARUB173BT2 |
ARUB192BT2 |
ARUB211BT2 |
ARUB230BT2 |
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ARUB096BT2 |
ARUB096BT2 |
ARUB115BT2 |
ARUB115BT2 |
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ARUB076BT2 |
ARUB096BT2 |
ARUB096BT2 |
ARUB115BT2 |
Product Charge |
kg(lbs) |
8+8(17.6+17.6) |
8+8(17.6+17.6) |
8+8(17.6+17.6) |
8+8(17.6+17.6) |
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CF(Correction Factor) |
kg(lbs) |
-1(-2.2) |
0(0) |
1(2.2) |
2(4.4) |
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Max. Connectable No. of Indoor Units |
29 |
32 |
35 |
39 |
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Net Weight |
kg |
285+285 |
285+285 |
285+285 |
285+285 |
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lbs |
628+628 |
628+628 |
628+628 |
628+628 |
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Dimensions |
mm |
(1,280x1,607x730)x2 |
(1,280x1,607x730)x2 |
(1,280x1,607x730)x2 |
(1,280x1,607x730)x2 |
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(WxHxD) |
inch |
(50-3/8 x 63-5/16 x 28-11/16)x2 |
(50-3/8 x 63-5/16 x 28-11/16)x2 |
(50-3/8 x 63-5/16 x 28-11/16)x2 |
(50-3/8 x 63-5/16 x 28-11/16)x2 |
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Connecting Pipes |
Liquid Pipes[mm(inch)] |
15.88(5/8) |
15.88(5/8) |
15.88(5/8) |
15.88(5/8) |
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Low Pressure Pipes[mm(inch)] |
28.58(1 1/8) |
28.58(1 1/8) |
34.9(1 3/8) |
34.9(1 3/8) |
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High Pressure Gas Pipes[mm(inch)] |
22.2(7/8) |
22.2(7/8) |
28.58(1 1/8) |
28.58(1 1/8) |
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14 
Outdoor Unit
Select the Best Location
Environment-friendly Alternative Refrigerant R410A
• The refrigerant R410A has the property of higher operating pressure in comparison with R22. |
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Therefore, all materials have the characteristics of higher resisting pressure than R22 ones and this character- |
ENGLISH |
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istic should be also considered during the installation. |
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R410A is an azeotrope of R32 and R125 mixed at 50:50, so the ozone depletion potential (ODP) of R410A is |
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0. These days the developed countries have approved it as the environment-friendly refrigerant and encour- |
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aged to use it widely to prevent environment pollution. |
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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.
1. 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 (neare beach, coast, lake, etc).
(Ex) Rooftop where sunshine always shines.
2. 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:
(1)Shade position with a narrow space
(2)Location with much moisture in neighboring floor.
(3)Location with much humidity around.
(4)Location where water gathers since the floor is not even.
Installation Manual 15
Select the Best Location
■Select installation location of the HR unit suitable for following conditions
•Avoid a place where rain may enter since the HR unit is for indoor.
•Sufficient service space must be obtained.
•Refrigerant pipe must not exceed limited length.
•Avoid a place subject to a strong radiation heat from other heat source.
•Avoid a place where oil spattering, vapor spray or high frequency electric noise is expected.
•Install the unit at a place in which it is not affected by operation noise. (Installation within cell such as meeting room etc. may disturb business due to noise.)
•Place where refrigerant piping, drain piping and electrical wiring works are easy.
450(17-3/4)
481(18-10/11)
7
1/2)-345(13 
1
2
3
Inspection door(NOTICE 1) (servicing space)
450(17-3/4)
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100mm(3-15/16 inch)100 more |
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(Serviceing space) |
300mm(11-7/8 inch) more |
300mm(11-7/8 inch) more |
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(NOTICE 2) |
(Servicing space) |
(Servicing space) |
100mm(3ore-15/16 inch) more 
(Serviceing space)
300mm(11-7/8 inch)more |
450mm(17-3/4 inch) more |
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(NOTICE 2) |
(Servicing space) |
(Servicing space) |
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124(4-7/8) |
4 |
5 |
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218(8-1/2) |
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182(7-1/8) |
128(5) |
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60(2-3/8) |
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174(6-7/8) |
453(17-7/8) |
174(6-7/8) |
419(16-1/2) |
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-1/6) |
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61(2-7/16) |
137(5-3/8) |
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30(1 |
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(Unit: mm(inch))
No. |
Part Name |
Description |
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PRHR030A/040A |
PRHR020A |
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1 |
Low pressure Gas pipe connection port |
Ø28.58(1-1/8) Brazing connection |
Ø22.2(7/8) Brazing connection |
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2 |
High pressure Gas pipe connection port |
Ø22.2(7/8) Brazing connection |
Ø19.05(3/4) Brazing connection |
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3 |
Liquid pipe connection port |
Ø12.7(1/2) Brazing connection |
Ø9.52(3/8) Brazing connection |
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4 |
Indoor unit Gas pipe connection port |
Ø15.88(5/8) Brazing connection |
Ø15.88(5/8) Brazing connection |
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5 |
Indoor unit Liquid pipe connection port |
Ø9.52(3/8) Brazing connection |
Ø9.52(3/8) Brazing connection |
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6 |
Control box |
- |
- |
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7 |
Hanger metal |
M10 or M8 |
M10 or M8 |
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NOTICE :
1.Be sure to install the inspection door at the control box side.
2.If reducers are used, servicing space must be increased equal to reducer's dimension.
16 
Outdoor Unit
Installation Space
Installation Space
Individual Installation
■ Basic space required
A space of at least 250mm(9-13/16 inch) is necessary at the back for inlet air. Taking servicing, etc. from the rear into account, a space of about 915mm(36 inches) should be provided, the same as at the front.
A |
915mm(36 inches) or more (Control box is open/close type) |
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B |
250mm(9-13/16 inch) or more |
C |
C |
Top discharge (open in principle) |
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DFront inlet (open in principle)
ERear inlet (open in principle)
D E
Rear Side |
B |
Rear Side |
B |
Front Side |
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Front Side |
A |
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A |
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ControlBox |
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ControlBox |
< Side view > |
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< Top view > |
■ When inlet air enters from right and left sides of unit |
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A 915mm(36 inches) or more |
A |
B |
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h |
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(Control box is open/close type) |
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B250mm(9-13/16 inch) or more
C150mm(5-7/8 inch) from the wall
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H |
CAUTION |
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Wall height(H) must not exceed |
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< Side view > |
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height of the product. If the wall |
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height is higher than the whole |
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Rear Side |
B |
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Rear Side |
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B |
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height of product by (h), Add (h) to |
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C |
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Front Side |
A |
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Front Side |
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A |
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< Top view > |
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A 250mm(9-13/16 inch) or more |
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h |
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(350mm(13-3/4 inch)or more at the coastal area.) |
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B 150mm(5-7/8 inch) from the wall |
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CAUTION |
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H |
Wall height(H) must not |
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exceed height of the |
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product. If the wall |
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< Side view > |
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height is higher than the |
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Rear Side |
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Rear Side |
whole height of product |
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by (h), Add (h) to , . |
B |
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Front Side
Front Side
< Top view >
ENGLISH
Installation Manual 17
Installation Space
■ When unit is surrounded by walls
A915mm(36 inches) or more (Control box is of a open/close type)
B250mm(9-13/16 inch) or more
Rear Side |
B |
B |
B |
Front Side |
A |
Rear Side |
B |
B |
B |
Front Side |
A |
■ When there is an obstruction above the unit
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A 45° or more |
B |
B |
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B 200mm(7-7/8 inch) or more |
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C 250mm(9-13/16 inch) or more |
C |
C |
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< Front view >
C
D Air guide |
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E Air outlet guide (Procured at the site) |
D |
F 250mm(9-13/16 inch) or more |
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E |
F 
3/8)-390(15
< Side view >
< Front view >
587. 
6(23- 
1/8)
11/16)-372.5(14
-15/16) |
-1/2) |
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125(4 |
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.5(28 |
723 |
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< Air guide >
18 
Outdoor Unit
Installation Space
Collective / Continuous installation
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.
A(Be opened)
B915mm(36 inches) or more (control box is of a open/close type)
C 250mm(9-13/16 inch) or more
D 150mm(5-7/8 inch) or more
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Front Side |
Rear Side |
Front Side |
Rear Side |
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Front Side |
Rear Side |
Front Side |
Rear Side |
Front Side |
Rear Side |
ENGLISH
B = 1250mm(49-1/4 inch) or more at the coastal area
or strong wind area
Rear Side |
Rear Side |
Rear Side |
Rear Side |
Front Side |
Front Side |
Front Side |
Front Side |
Front Side |
Rear Side |
Front Side |
Rear Side |
Front Side |
Rear Side |
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Front Side |
Rear Side |
Front Side |
Rear Side |
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Rear Side |
D |
Rear Side |
D |
Rear Side |
D |
Rear Side |
Front Side |
Front Side |
Front Side |
Front Side |
Installation Manual 19
Installation Space
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.
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.
20 
Outdoor Unit
Lifting Method
Lifting method
• When carrying the suspended, unit pass the ropes under the unit and use the two suspension points each at |
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the front and rear. |
ENGLISH |
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• Always lift the unit with ropes attached at four points so that impact is not applied to the unit. |
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• Attach the ropes to the unit at an angle of 40° or less. |
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Sub line |
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A 40° or less
WARNING
CAUTION
Be very careful while carrying the product.
•Do not have only one person carry product if it is more than 20 kg(44 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.
•Be very careful while carrying ARUN076DT2. It will be tilted in right side.
Installation Manual 21
Installation
Installation
Location of anchor bolt(To be applied to 1, 2 Units installation)
■ Individual installation
700±2(27-9/16±1/16)
Unit: mm(inch)
10(3/8)
UW1 UW1
900±2 |
383 |
900±2 |
(35-7/16±1/16) |
(15-1/16) |
(35-7/16±1/16) |
■ Collective installation
700±2 
(27-9/16±1/16)
UW1 |
UW1 |
UW1 |
UW1 |
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150 |
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10(3/8) |
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(5-7/8) |
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10(3/8) |
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900±2 |
383 |
900±2 |
533 |
900±2 |
383 |
900±2 |
(35-7/16±1/16) |
(15-1/16) |
(35-7/16±1/16) |
(20-15/16) |
(35-7/16±1/16) |
(15-1/16) |
(35-7/16±1/16) |
■ Installation foot(Location of anchor bolt)
(UW1)
(35900mm |
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7/16 |
inch) |
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22 
Outdoor Unit
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. |
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• Use the H-beam support as a base support |
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• Noise and vibration may occur from the floor or wall since vibration is transferred through the installation |
ENGLISH |
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part depending on installation status. Thus, use anti-vibration materials (cushion pad) fully (The base pad |
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shall be more than 200mm). |
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AEnsure that the corner part can be securely mounted. Otherwise, the support for installation may be bent.
BObtain and use the M10 anchor bolt.
CThe corner was not properly mounted.
DOutdoor unit (Insert the cushion pad between outdoor unit and base support to ensure that anti-vibration may be done in a wide area)
GE Pipe and wiring space (in case of piping and wiring on the floor surface)
F H-Beam support
G Concrete base support
WARNING
•Be sure to install unit in a place strong enough to withstand its weight.
Any lack of strength may cause unit to fall down, resulting in a personal injury.
•Have installation work in order to protect against a strong wind and earthquake. Any installation deficiency may cause unit to fall down, resulting in a personal injury.
•Especially take care for support strength of the floor surface, water drain processing (processing of water flown out from the outdoor unit during operation) and paths of the pipe and wiring when making a base support.
•Don't use a tube or pipe for water drain in the base pan and perform water drain processing by using the drain path. Water drain may not be done due to freezing of a tube or pipe.
Rear view |
Side view |
Water
Drain
Path
Installation Manual 23
Refrigerant piping installation
Refrigerant piping installation
WARNING
Always use extreme care to prevent the refrigerant gas (R410A) from leakage while using fire or flame. If the refrigerant gas comes in contact with the flame from any source, such as a gas stove, it breaks down and generates a poisonous gas which can cause gas poisoning. Never perform brazing in an unventilated room. Always conduct an inspection for gas leakage after installation of the refrigerant piping has been completed.
Cautions in pipe connection/valve operation
Cut both the pipe and the valve with a cutter to suit the length
(Don't cut the length of less than 70mm(2.8inch))
Open status when both the pipe and the valve are in a straight line.
CLOSE |
OPEN |
WARNING
After completing work, securely tighten both service ports and caps so that gas does not leak.
Pipe joint (auxiliary parts): Securely perform brazing with a nitrogen blow into the service valve port.(Releasing pressure : 0.29 psi or less)
Flare nut: Loose or tighten flare nut by using the wrench with both ends. Coat the flare connection part with oil for the compressor.
Cap: Remove caps and operate valve, etc. After operation, always reattach caps (tightening torque of valve cap: 25Nm (250kg-cm) or more). (Don't remove the internal part of the port)
Service port: Make the refrigerant pipe vacuum and charge it using the service port. Always reattach caps after completing work (tightening torque of service cap: 10 lbf•ft or more).
Ball Valve(Liquid Pipe)
Liquid pipe
Gas pipe
Elbow joint (field supply)
Elbow
Ball Valve(Gas Pipe)
24 
Outdoor Unit
Refrigerant piping installation
When connecting the pipes from the front of the outdoor unit, remove part 
and part 
.
When connecting the pipes from the side of the outdoor unit, remove part 
(the whole "Knock out" part).
(Front)
WARNING
After installing the pipe, clog the pipe excavation inlet of the front panel and the side panel (Wire may be damaged due to entering of rats, animals, etc).
ENGLISH
Installation Manual 25
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