Fujitsu 9319357041 Installation Manual Download Page 2

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En-2

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 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 SYS-
TEM.

• 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
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

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.

Contents

1. SAFETY

PRECAUTIONS

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

2. ABOUT

THE

UNIT

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

3. GENERAL

SPECIFICATION

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

4. ELECTRICAL

REQUIREMENT

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

5. SELECTING THE MOUNTING POSITION ...............................................................4

6. INSTALLATION

WORK

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

7. ELECTRICAL

WIRING

.............................................................................................7

8. FINISHING

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

9. FRONT PANEL REMOVAL AND INSTALLATION .....................................................9

10. TEST RUN

.................................................................................................................9

11.

REMOTE CONTROLLER INSTALLATION ..............................................................10

12. OPTIONAL KIT INSTALLATION (UTY-TWBXF) ......................................................10

13. SELECTING THE REMOTE CONTROLLER SIGNAL CODE ................................. 11

14. FUNCTION SETTING..............................................................................................12

15. CUSTOMER GUIDANCE

........................................................................................13

16. ERROR CODES

......................................................................................................13

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.

WARNING

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.

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.

CAUTION

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

This unit must be installed by quali

ed personnel with a capacity certi

cate for handling

refrigerant

uids. Refer to regulation and laws in use on installation place.

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 3 mm (1/8 in.) for this unit.

The unit must be correctly earthed (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.

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

Do not place any other electrical products or household belongings under indoor unit
or outdoor unit.
Dripping condensation from the unit might get them wet, and may cause damage or
malfunction of your property.

2. ABOUT THE UNIT

2.1. Precautions for using R410A refrigerant

The basic installation work procedures are the same as conventional refrigerant (R22)
models.
However, pay careful attention to the following points:

Since the working pressure is 1.6 times higher than that of conventional refrigerant
(R22) models, some of the piping and installation and service tools are special. (See
the table below.)
Especially, when replacing a conventional refrigerant (R22) model with a new refrigerant
R410A model, always replace the conventional piping and

are nuts with the R410A piping

and

are nuts.

Models that use refrigerant R410A have a different charging port thread diameter to pre-
vent erroneous charging with conventional refrigerant (R22) and for safety. Therefore,
check beforehand. [The charging port thread diameter for R410A is 1/2 inch.]

Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant (R22) models. Also, when storing the piping ,securely seal the opening by
pinching, taping, etc.

When charging the refrigerant, take into account the slight change in the composition of
the gas and liquid phases. And always charge from the liquid phase where refrigerant
composition is stable.

Branch box which is speci

ed in this manual is the equipment to support the indoor unit

•

of multi-connection type.

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