ROOM AIR CONDITIONER
DC INVERTER
OUTDOOR UNIT
INSTALLATION INSTRUCTIONS
AU122AEERA
AU182AFERA
AU242AGERA
AU282AHERA
AU362AHERA
AU36NAHERA
AU422AIERA
AU42NAIERA
AU522AIERA
AU52NAIERA
Before using the air conditioner,please read this manual carefully. 
Please keep this manual properly for future use.
No. 0010576506C
CONTENTS |
|
Name of Parts------------------------------------------------------------------ |
1 |
Safety Cautions-------------------------------------------------------------- |
2-7 |
Read Before Installation-------------------------------------------------- |
8-12 |
Installation Procedure--------------------------------------------------- |
13-22 |
Name of Parts
AU122AEERA
Air inlet
Air outlet
Compressor
(Inside of unit)
AU282AHERA
AU362AHERA
AU36NAHERA
AU422AIERA
AU42NAIERA
AU522AIERA
AU52NAIERA
AU182AFERA AU242AGERA
Air inlet
Air outlet
Compressor
(Inside of unit)
Air inlet
Air outlet
Compressor
(Inside of unit)
Air inlet
Air outlet
Compressor
(Inside of unit)
1
Safety Cautions
Carefully read the following information in order to operate the air conditioner correctly.
Below are listed three kinds of Safety Cautions and Suggestions.
WARNING! Incorrect operations may result in severe consequences of death or serious injuries. CAUTION! Incorrect operations may result in injuries or machine damages; in some cases may
cause serious consequences.
INSTRUCTIONS:These information can ensure the correct operation of the machine.
Symbols used in the illustrations
:Indicates an action that must be avoided.
! :Indicates that important instructions must be followed. 
:Indicates a part which must be grounded.
:Beware of electric shock (This sumbol is displayed on the main unit label.)
After reading this handbook, hand it over to those who will be using the unit.
The user of the unit should keep this mamual at hand and make it available to those who will be performing repairs or relocating the unit.
Also, make it available to the new user when the user changes hands.
Be sure to conform with the following important Safety Cautions.
WARNING!
If any abnormal phenomena is found (e. g.smell of firing), please cut off the power supply immediately, and contact the dealer to find out the handling method.
In such case, to continue using the conditioner will damage the conditioner, and may cause electrical shock or fire hazard.
switch off
After a long time use of air-conditioner the base should be checked for any damages.
If the damaged base is not repaired, the unit may fall down and cause accidents.
Don't dismantle the outlet of the outdoor unit.
The exposure of fan is very dangerous whichmay harm human beings.
When need maintenance and repairment, call dealer to handle it.
Incorrect maintenance and repairment may cause water leak, electrical shock and fire hazard.
2
Safety Cautions
WARNING!
Installed electrical-leaking circuit breaker.
It easily cause electrical shock without circuit breaker.
Air-conditioner can't be installed in the environment with inflammable gases because the inflammable gases near to air-conditioner may cause fire hazard.
Please let the dealer be responsible for installing the conditioner.
Incorrect installation may cause water leak, electrical shock and fire hazard.
Call the dealer to take measures to prevent the refrigerant from leaking.
If conditioner is installed in a small room be sure to take every measure in order to prevent suffocation accident even in case of refrigerant leakage.
When conditioner is deinstalled or reinstalled dealer should be responsible for them.
Incorrect installation may cause water leaking, electrical shock and fire hazard.
Connect earthing wire.
Earthing wire should not be connected to the gas pipe, water pipe, lightning rod or phone line, incorrect earthing may cause shock.
Earthing
No goods or nobody is permitted to placed on or stand on outdoor unit.
The falling of goods and people may cause accidents.
Don't operate the air-conditioner with damp hands.
Otherwise will be shocked.
Only use correctly-typed fuse.
May not use wire or any other materials replacing fuse, other-wise may cause faults or fire accidents.
Use discharge pipe correctly to ensure efficient discharge.
Incorrect pipe use may cause water leaking.
3
Safety Cautions
Warning !
Have the unit professionally installed.
Improper installation by an unqualified person may result in water leak, electric shock, or fire.
Place the unit on a stable, level surface that withstands the weight of the unit to prevent the unit from tipping over or falling causing injury as a result.
Only use specified cables for wiring.Securely connect each cable, and make sure that the cables are not straining the terminals.
Cables not connected securely and properly may generate heat and cause fire.
Take necessary safety measures against typhoons and earthquakes to prevent the unit from falling over.
Do not make any changes or modifications to the unit. In case of problems, consult the dealer.
If repairs are not made properly, the unit may leak water and present a risk of electric shock, or it may produce smoke or cause fire.
Be sure to carefully follow each step in this handbook when installing the unit.
Improper installation may result in water leak, electric shock, smoke or fire.
Have all electrical work performed by a licensed electrician according to the local regulations and the instructions given in this manual. Secure a circuit designated exclusively to the unit.
Improper installation or a lack of circuit capacity may cause the unit to malfunction or present a risk of electric shock, smoke,and fire.
Securely attach the terminal cover(panel) on the unit.
If installed improperly, dust and/or water may enter the unit and present a risk of electric shock, smoke, or fire.
Only use refrigerant R410A as indicated on the unit when installing or relocating the unit.
The use of any other refrigerant or an introduction of air into the unit circuit may cause the unit to run an abnormal cycle and abnormal cycle and cause the unit to burst.
4
Safety Cautions
Warning !
Do not touch the fins on the heat exchanger with bare hands:they are sharp and dangerous.
In the event of a refrigerant gas leak, provide adequate ventilation to the room.
If leaked refrigerant gas is exposed to a heat source, noxious gases may form.
With All-Fresh type air cinditioners, outdoor air may be directly blown into the room upon thermo off. Take this into consideration when installing the unit.
Direct expesure to outdoor air may present a health hazard, and it may also cause food items to deteriorate.
When installing the unit in a small room, safeguard against hypoxia that results from leaked refrigerant reaching the threshold level.
Consult the dealer for necessary measures to take.
When relocating the air conditioner, consult the dealer or a specialist.
Improper installation may result in water leak, electric shock, or fire.
After completing the service work, check for a refrigerant gas leak.
If leaked gas refrigerant is exposed to a heat source such as fan heater,stove,and electric grill, noxious gases may form.
Do not try to defeat the safety features of the devices, and do not change the settings.
Defeating the safety features on the unit such as the pressure switch and temperature switch or using parts other than the dealer or specialist may result in fire or explosion.
Only use specified parts.
Have the unit professionally installed. Improper installation may cause water leak, electric shock,smoke, or fire.
Precautions for handling Units for Use with R410A
Caution!
Do not use the existing refrigerant piping
The old refrigerant and refrigerator oil in the existing piping contain a large amount of chlorine, which will cause the refrigerator oil in the new unit to deteriorate.
R410A is a high-pressure refrigerant,and the use of the existing piping may result in bursting.
Keep the inner and outer surfaces of the pipes clean and free of contaminants such as sulfur, oxides, dust/dirt shaving particles, oils,and moisture.
Contaminants inside the refrigerant piping will cause the refrigerant oil to deteriorate.
Use a vacuum pump with a reverse-flow- check valve.
If other types of valves are used, the vacuum pump oil will flow back into the refrigerant cycle and cause the refrigerator oil to deteriorate.
Do not use the following tools that have been used with the conventional refrigerants. prepare tools that are for exclusive use with R410A.
(Gauge manifold, charging hose, gas leak detector,reverse-flow check valve, refrigerant charge base,vacuum gauge, and refrigerant recovery equipment.)
If refrigerant and/or refrigerant oil left on these tools are mixed in with R410, or if water is mixed with R410A, it will cause the refrigerant to deteriorate.
Since R410A does not contain chlorine, gas-leak detectors for conventional refrigerators will not work.
5
Safety Cautions
Caution!
Store the piping to be used during installation indoors, and keep both ends of the piping sealed until immediately before brazing.(keep elbows and other joints wrapped in plastic.)
If dust, dirt, or water enters the refrigerant cycle, it may cause the oil in the unit to deteriorate or may cause the compressor to malfunction.
Use a small amount of ester oil,ether oil, or alkylbenzene to coat flares and flange connections.
A large amount of mineral oil will cause the refrigerating machine oil to deteriorate.
Use lipuid refrigerant to charge the system.
Charge the unit with gas refrigerant will cause the refrigerant in the cylinder to change its composition and will lead to a drop in performance
Do not use a charging cylinder.
The use of charging cylinder will change the composition of the refrigerant and lead to power loss.
Exercise special care when handling the tools.
An introduction of foreign objects such as dust, dirt, or water into the refrigerant cycle will cause the refrigerating machine oil to deteriorate.
Only use R410A refrigerant.
The use of refrigerants containing chlorine(i.e. R22) will cause the refrigerant to deteriorate.
Before Installing the Unit
Warning!
Do not install the unit in a place where there is a possibility of flammable gas leak.
Leaked gas accumulated around the unit may start a fire.
Do not use the unit to preserve food, animals, plants,artifacts, or for other special purposes.
The unit is not designed to provide adepuate conditions to preserve the quality of these items.
Do not use the unit in an unusual environment
The use of the unit in the presence of a large amount of oil, steam,acid, alkaline solvents,or special types of sprays may lead to a remarkable drop in performance and/or malfunction and presents a risk of electric shock, smoke, or fire. 
The presence of organic solvents, corroded gas (such as ammonia,sulfur compounds,and acid may cause gas or water leak.)
When installing the unit in a hospital,take necessary measures against noise.
High-frequency medical equipment may interfere with the normal operation of the air conditioning unit or the air conditioning unit may interfere with the normal operation of the medical equipment
Do not place the unit on or over things that may not get wet.
When humidity level exceeds 80% or when the drainage system is clogged, indoor units may drip water.
Installation of a centralized drainage system for the outdoor unit may also need to be considered to prevent water drips from the outdoor units.
6
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