Fujitsu 9379123037-02 Installation Insrtuctions - Page 2

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INSTALLATION MANUAL

PART NO. 9379123037-02

INDOOR UNIT (Duct Type)

Contents

SAFETY PRECAUTIONS ..........................................................................................2

ABOUT THE UNIT .....................................................................................................2

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

2.2. Special tool for R410A ........................................................................................2

2.3. Accessories ........................................................................................................3

2.4. Optional parts .....................................................................................................3

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

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

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

3.3. Installation the unit ..............................................................................................4

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

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

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

4.3. Flare connection (Pipe connection) ....................................................................5

4.4. Installing heat insulation .....................................................................................6

INSTALLING DRAIN PIPES ......................................................................................6

5.1. Installing drain pipes (Ceiling concealed type) ...................................................6

ELECTRICAL WIRING ..............................................................................................7

6.1. Wiring system diagram .......................................................................................8

6.2. Connection cable preparation .............................................................................8

6.3. Connection of wiring ...........................................................................................8

REMOTE CONTROLLER SETTING .........................................................................9

7.1. Installing the remote controller ...........................................................................9

7.2. Setting the dip switches ......................................................................................9

FUNCTION SETTING..............................................................................................10

8.1. Turning on the power ........................................................................................10

8.2. Function setting ................................................................................................10

8.3. Group control system .......................................................................................12

8.4. Dual remote controllers ....................................................................................12

TEST RUN ...............................................................................................................13

10. CHECK LIST ............................................................................................................13

11. OPTIONAL KIT INSTALLATION (OPTION) .............................................................13

12. CUSTOMER GUIDANCE ........................................................................................13

13. ERROR CODES ......................................................................................................14

1. SAFETY PRECAUTIONS

• Be sure to read this Manual thoroughly before installation.

• The warnings and precautions indicated in this Manual contain important information

pertaining 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.

This mark indicates procedures which, if improperly performed,

WARNING!

might lead to the death or serious injury of the user.

• 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 ﬁ re.

If the 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 ﬁ re.

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

If the refrigerant comes in contact with a ﬂ 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 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.

En-2

9379123037-02.indb 2

This mark indicates procedures which, if improperly performed,

CAUTION!

might possibly result in personal harm to the user, or damage to

property.

Read carefully all security information before use or install the air conditioner.

Do not attempt to install the air conditioner or a part of the air conditioner by yourself.

This unit must be installed by qualified personnel with a capacity certificate for handling

refrigerant fluids. Refer to regulation and laws in use on installation place.

The installation must be carried out in compliance with regulations in force in the place

of installation and the installation instructions of the manufacturer.

This unit is part of a set constituting an air conditioner. It must not be installed alone or

with non-authorized by the manufacturer.

Always use a separate power supply line protected by a circuit breaker operating on all

wires with a distance between contact of 3mm for this unit.

The unit must be correctly grounded and the supply line must be equipped with a

differential breaker in order to protect the persons.

The units are not explosion proof and therefore should not be installed in explosive

atmosphere.

Never touch electrical components immediately after the power supply has been turned

off. Electric shock may occur. After turning off the power, always wait 5 minutes before

touching electrical components.

This unit contains no user-serviceable parts. Always consult authorized service

personnel to repairs.

When moving, consult authorized service personnel for disconnection and installation of

the unit.

This appliance is not intended for use by persons (including children) with reduced

physical, sensory or mental capabilities, or lack of experience and knowledge, unless

they have been given supervision or instruction concerning use of the appliance by a

person responsible for their safety. Children should be supervised to ensure that they do

not play with the appliance.

2. ABOUT THE UNIT

2.1. Precautions for using the R410A refrigerant

WARNING

• Do not introduce any substance other than the prescribed refrigerant into the

refrigeration cycle.

If air enters the refrigeration cycle, the pressure in the refrigeration cycle will become

abnormally high and cause the piping to rupture.

• If there is a refrigerant leakage, make sure that it does not exceed the concentration

limit.

If a refrigerant leakage exceeds the concentration limit, it can lead to accidents such

as oxygen starvation.

• Do not touch refrigerant that has leaked from the refrigerant pipe connections or

other area. Touching the refrigerant directly can cause frostbite.

• If a refrigerant leakage occurs during operation, immediately vacate the premises

and thoroughly ventilate the area.

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

2.2. Special tool for R410A

WARNING

• To install a unit that uses the R410A refrigerant, use dedicated tools and piping

materials that have been manufactured speciﬁ cally for R410A use.

Because the pressure of the R410A refrigerant is approximately 1.6 times higher than

the R22, failure to use dedicated piping material or improper installation can cause

rupture or injury.

Furthermore, it can cause serious accidents such as water leakage, electric shock, or

ﬁ re.

Tool name

• Pressure is huge and cannot be measured with a conventional

gauge. To prevent erroneous mixing of other refrigerants, the

diameter of each port has been changed.

Gauge manifold

It is recommended to use a gauge manifold with a high

pressure display range -0.1 to 5.3 MPa and a low pressure

display range -0.1 to 3.8 MPa.

• To increase pressure resistance, the hose material and base

Charging hose

size were changed.

• A conventional vacuum pump can be used by installing a

Vacuum pump

vacuum pump adapter.

Gas leakage

• Special gas leakage detector for HFC refrigerant R410A.

detector

Contents of change

7/4/12 3:47 PM