AirStage ASUB18RLAV Installation Manual Download Page 2

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En-1

1. SAFETY PRECAUTIONS

1.1. IMPORTANT! Please read before starting

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 ef

ciently.

For safe installation and trouble-free operation, you must:

•  Carefully read this instruction booklet before beginning.
•  Follow each installation or repair step exactly as shown.
•  Observe all local, state, and national electrical codes.
•  Pay close attention to all danger, warning, and caution notices given in this manual.

WARNING:

This symbol refers to a hazard or unsafe practice which can result in

severe personal injury or death.

CAUTION:

This symbol refers to a hazard or unsafe practice which can result in

personal injury and the potential for product or property damage.

• Hazard alerting symbols

Electrical

Safety/alert

If Necessary, Get Help

These instructions are all you need for most installation sites and maintenance conditions.
If you require help for a special problem, contact our sales/service outlet or your certi

dealer for additional instructions.

In Case of Improper Installation

The manufacturer shall in no way be responsible for improper installation
or maintenance service, including failure to follow the instructions in this
document.

1.2. SPECIAL PRECAUTIONS

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 wir-

ing diagram and these instructions when wiring. Improper connections and inadequate
earthing (grounding) can cause accidental injury or death.

• Earth (Ground) the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause overheating at connection points and

a possible

re 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

ns on the air conditioner can cut your

ngers.

When Installing...
...In a Ceiling or Wall

Make sure the ceiling/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 drip-
ping and water damage to walls and

oors.

...In an Area with High Winds

Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baf

...In a Snowy Area (for Heat Pump-type Systems)

Install the outdoor unit on a raised platform that is higher than drifting snow.

When Connecting Refrigerant Tubing

• Keep all tubing runs as short as possible.
• Use the

are method for connecting tubing.

• Apply refrigerant lubricant to the matching surfaces of the

are and union tubes before

connecting them, then tighten the nut with a torque wrench for a leak-free connection.

• Check carefully for leaks before opening the refrigerant valves.

When Servicing

• Turn the power OFF at the main circuit breaker panel before opening the unit to check

or repair electrical parts and wiring.

• Keep your

ngers and clothing away from any moving parts.

• Clean up the site after you

nish, remembering to check that no metal scraps or bits of

wiring have been left inside the unit being serviced.

• After installation, explain correct operation to the customer, using the operating manual.

DANGER

Never touch electrical components immediately after the power supply has been turned
off. Electrical shock may occur. After turning off the power, always wait 5 minutes or
more before touching electrical components.

• Be sure to read this Manual thoroughly before installation.
• The warnings and precautions indicated in this Manual contain important information per-

taining to your safety. Be sure to observe them.

• Hand this Manual, together with the Operating Manual, to the customer. Request the

customer to keep them on hand for future use, such as for relocating or repairing the unit.

WARNING

Request your dealer or a professional installer to install the indoor unit in accordance
with this Installation Manual. An improperly installed unit can cause serious accidents
such as water leakage, electric shock, or

re. If the indoor unit is installed in disregard

of the instructions in the Installation Manual, it will void the manufacturer’s warranty.

Do not turn ON the power until all work has been completed. Turning ON the power
before the work is completed can cause serious accidents such as electric shock or

re.

If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant
comes in contact with a

ame, it produces a toxic gas.

Installation work must be performed in accordance with national wiring standards by
authorized personnel only.

Except for EMERGENCY, never turn off main as well as sub breaker of the indoor
units during operation. It will cause compressor failure as well as water leakage.
First, stop the indoor unit by operating the controller, converter or external input
device and then cut the breaker.
Make sure to operate through the controller, converter or external input device.
When the breaker is designed, locate it at a place where the users cannot start and
stop in the daily work.

Contents

1. SAFETY

PRECAUTIONS

........................................................................................ 1

1.1. IMPORTANT! Please read before starting ..................................................... 1
1.2. SPECIAL

PRECAUTIONS

............................................................................. 1

2. ABOUT

THE

UNIT

................................................................................................... 2

2.1. Precautions for using R410A refrigerant ............................................................ 2
2.2. Special tool for R410A .................................................................................... 2
2.3. Accessories

.................................................................................................... 2

2.4. Optional

parts

................................................................................................. 2

3. INSTALLATION

WORK

........................................................................................... 2

3.1. Selecting an installation location .................................................................... 2
3.2. Installation

dimension

..................................................................................... 3

3.3. Installation the unit ......................................................................................... 3

4. PIPE

INSTALLATION

.............................................................................................. 4

4.1. Selecting the pipe material ............................................................................. 4
4.2. Pipe

requirement

............................................................................................ 4

4.3. Flare connection (pipe connection) ................................................................ 4

5. FORMING THE DRAIN HOSE AND PIPE ............................................................... 5

6. ELECTRICAL

WIRING

............................................................................................ 6

6.1. Electrical

requirement

.................................................................................... 6

6.2. Wiring

method

................................................................................................ 6

6.3. Unit

wiring

...................................................................................................... 6

6.4. Wiring

............................................................................................................. 8

6.5. External input and external output (Optional parts) ........................................ 8

7. FIELD

SETTING

.................................................................................................... 10

7.1. Setting the address ...................................................................................... 10
7.2. Custom code setting .................................................................................... 12
7.3. Function

setting

............................................................................................ 12

8. FINISHING............................................................................................................. 13

8.1. Connection pipe, cable and drain hose ........................................................ 13
8.2. Installing front cover ..................................................................................... 14

9. TEST

RUN

............................................................................................................. 15

9.1. Test run using PCB (Outdoor unit) ............................................................... 15
9.2. Test run using remote controller ................................................................... 15

10. CHECK LIST

.......................................................................................................... 15

11. ERROR

CODES

.................................................................................................... 15

INSTALLATION MANUAL

PART NO. 9373370154
VRF system indoor unit (Wall mounted type)

9373370154-01_IM.indb 1

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