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INSTALLATION MANUAL

PART No. 9373370420-02

VRF system indoor unit (Wall mounted type)

Contents

SAFETY PRECAUTIONS ........................................................................................... 1

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

1.2. SPECIAL PRECAUTIONS ..................................................................................... 1

ABOUT THIS PRODUCT ............................................................................................ 2

2.1. Precautions for using R410A refrigerant ................................................................ 2

2.2. Special tools for R410A .......................................................................................... 2

2.3. Accessories ............................................................................................................ 2

2.4. Optional parts ......................................................................................................... 2

2.5. About unit of the length .......................................................................................... 2

INSTALLATION WORK .............................................................................................. 3

3.1. Selecting an installation location ............................................................................ 3

3.2. Installation dimension ............................................................................................. 3

3.3. Installing the unit .................................................................................................... 3

PIPE INSTALLATION .................................................................................................. 5

4.1. Selecting the pipe material ..................................................................................... 5

4.2. Pipe requirement .................................................................................................... 5

4.3. Flare connection (pipe connection) ........................................................................ 5

ELECTRICAL WIRING ................................................................................................ 6

5.1. Electrical requirement ............................................................................................ 6

5.2. Wiring method ........................................................................................................ 7

5.3. Unit wiring ............................................................................................................... 7

5.4. Wiring ..................................................................................................................... 8

5.5. Optional parts wiring .............................................................................................. 8

5.6. External input and external output (Optional parts) ............................................... 9

FIELD SETTING ........................................................................................................ 10

6.1. Setting the address ...............................................................................................11

6.2. Custom code setting .............................................................................................11

6.3. Function setting .....................................................................................................11

FINISHING................................................................................................................. 13

7.1. Connection pipe, cable and drain hose ............................................................... 13

FRONT PANEL REMOVAL AND INSTALLATION ................................................... 13

8.1. Intake grill removal and installation ...................................................................... 13

8.2. Front panel removal ............................................................................................. 14

8.3. Front panel installation ......................................................................................... 14

TEST RUN ................................................................................................................. 14

9.1. Test run using Outdoor unit (PCB) ....................................................................... 14

9.2. Test run using remote controller........................................................................... 14

10. CHECK LIST ............................................................................................................. 14

11. ERROR CODES ........................................................................................................ 15

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 efficiently.

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.

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

WARNING:

severe personal injury or death.

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

CAUTION:

personal injury and the potential for product or property damage.

• Hazard alerting symbols

: Electrical

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 certified

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.

En-1

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

• Highly dangerous electrical voltages are used in this system. Carefully refer to the wir-

• Earth (Ground) the unit following local electrical codes.

• Connect all wiring tightly. Loose wiring may cause overheating at connection points and

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 ﬁ ns on the air conditioner can cut your ﬁ 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

dripping and water damage to walls and ﬂ oors.

...In an Area with High Winds

Securely anchor the outdoor unit down with bolts and a metal frame.

Provide a suitable air bafﬂ e.

...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 ﬂ are method for connecting tubing.

• Apply refrigerant lubricant to the matching surfaces of the ﬂ are and union tubes before

• 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

• Keep your ﬁ ngers and clothing away from any moving parts.

• Clean up the site after you ﬁ nish, remembering to check that no metal scraps or bits of

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

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

• 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

: Safety/alert

and checked.

ing diagram and these instructions when wiring. Improper connections and inadequate

earthing (grounding) can cause accidental injury or death.

a possible ﬁ re hazard.

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

repair electrical parts and wiring.

wiring have been left inside the unit being serviced.

pertaining to your safety. Be sure to observe them.

repairing the unit.

Request your dealer or a professional installer to install the unit in accordance with this

Manual.

An improperly installed unit can cause serious accidents such as water leakage, electric

shock, or fire.

If the unit is instruction 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 fire.

If refrigerant leaks while work is being carried out, ventilate the area.

If the refrigerant comes in contact with a flame, it produces a toxic gas.

Installation must be performed in accordance with the requirement of NEC (National

Electrical Code) and CEC (Canadian Electrical Code) 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 control unit, converter or external input device and then

cut the breaker.

Make sure to operate through the control unit, 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.

DANGER

WARNING