Fujitsu AOYA72LALT Guide d'installation

Marque: Fujitsu

Modèle: AOYA72LALT

Taper: Guide d'installation

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PART No. 9378945487

INSTALLATION MANUAL

OUTDOOR UNIT

For authorized service personnel only.

INSTALLATIONSANLEITUNG

AUSSENGERÄT

Nur für autorisiertes Fachpersonal.

MANUEL D’INSTALLATION

APPAREIL EXTÉRIEUR

Pour le personnel d’entretien autorisé uniquement.

MANUAL DE INSTALACIÓN

UNIDAD EXTERIOR

Únicamente para personal de servicio autorizado.

MANUALE DI INSTALLAZIONE

UNITÀ ESTERNA

A uso esclusivo del personale tecnico autorizzato.

ƧƥƸƧƫƳƫƦƫƱ ƧƥƬƣƵƣƴƵƣƴƩƴ

ǼȄȍȉǼȇǿȀǾ Ȃȅȃǹǻǹ

ȂȩȞȠ ȖȚĮ İȟȠȣıȚȠįȠĲȘȝȑȞȠ ĲİȤȞȚțȩ ʌȡȠıȦʌȚțȩ.

MANUAL DE INSTALAÇÃO

UNIDADE EXTERIOR

Apenas para pessoal de assistência autorizado.

ǾȁǸǼǰǼǲǿȀǰǼ ǽǼ ȁǿȀǮǻǼǰǸǳ

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MONTAJ KILAVUZU

DIù ÜNøTE

YalnÕzca yetkili servis personeli için.

AIR CONDITIONER

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1. SAFETY PRECAUTIONS

• Be sure to read this Installation manual thoroughly before installation.

• The warnings and precautions indicated in this Installation manual contain important

information pertaining to your safety. Be sure to observe them.

• After installing the unit, perform a test run to make sure the unit operates normally.

Then, explain to the customer how to operate and maintain the unit.

• Please pass this Installation manual together with the Operating manual to the

customer.

Please ask the customer to keep the Operating manual and Installation manual at

hand for future reference during the moving or repair of the main unit.

WARNING

This mark indicates procedures which, if improperly performed,

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

Consult the retail store or professional technicians to install the main unit according to

the installation manual.

Improper installation will cause serious accidents such as refrigerant leakage, water

leakage, electric shock, and ¿ re.

Manufacturer's guarantee will be invalid when instructions in the Installation manual

are ignored during installation.

For installation purposes, be sure to use the parts supplied by the manufacturer or

other prescribed parts.

Using non-speci¿ ed parts will cause serious accidents such as falling unit, refrigerant

leakage, water leakage, electric shock, and ¿ re.

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

materials that have been manufactured speci¿ 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.

It will also cause serious accidents such as refrigerant leakage, water leakage,

electric shock, and ¿ re.

INSTALLATION MANUAL

OUTDOOR UNIT

PART No. 9378945487 English

Do not use this equipment with air or any other unspeci¿ ed refrigerant in the

refrigerant lines.

Excess pressure can cause a rupture.

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.

Be sure to install the unit as prescribed, so that it can withstand earthquakes and

typhoons or other strong winds.

Improper installation can cause the unit to topple or fall, or other accidents.

Ensure that the outdoor unit is securely installed at a place that can withstand the

weight of the unit.

Improper installation will cause injuries caused by falling unit.

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.

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

thoroughly ventilate the area.

If the refrigerant is exposed to ¿ re, it will create a hazardous gas.

Electrical work must be performed in accordance with this installation manual by a

person certi¿ ed under the national or regional regulations. Be sure to use a dedicated

circuit for the unit.

An insuf¿ cient power supply circuit or improperly performed electrical work can cause

serious accidents such as electric shock or ¿ re.

For wiring, use the prescribed type of wires, connect them securely, making sure that

there are no external forces of the wires applied to the terminal connections.

Improperly connected or secured wires can cause serious accidents such as

overheating the terminals, electric shock, or ¿ re.

Securely install the electrical box cover on the unit.

An improperly installed electrical box cover can cause serious accidents such as

electric shock or ¿ re through exposure to dust or water.

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.

After the installation, make sure there is no refrigerant leakage.

If the refrigerant leaks into the room and becomes exposed to a source of ¿ re such as

a fan heater, stove, or burner, it will create a hazardous gas.

Use a wall hole pipe. Otherwise, it may cause a short circuit.

Do not place the outdoor unit near the handrail of the balcony.

Children may climb onto the outdoor unit, lean over the handrail and fall over.

Use only a speci¿ ed power cable. Poor connection, poor insulation, and exceeding

the allowable current will lead to electric shock and ¿ re.

Attach the connecting cables securely to the terminal. Or secure it ¿ rmly with a “wiring

suppressor”.

Loose connection will lead to malfunction, electric shock, and ¿ re.

Install a breaker (earth leakage breaker) to cut off all AC main current at the same

time.

If you do not install a breaker (earth leakage breaker), it may cause electric shock and

¿ re.

Be sure to install the refrigerant pipe before operating the compressor. If the

refrigerant pipe is not installed and you operate the compressor while the valve is

open, air will be sucked into the system and abnormal pressure will occur in the

cooling cycle. This will damage the unit and cause injuries.

During installation, make sure that the refrigerant pipe is attached ¿ rmly before you

run the compressor.

Do not operate the compressor under the condition of refrigerant piping not attached

properly with 2-way or 3-way valve open. This may cause abnormal pressure in the

refrigeration cycle that leads to rupture and even injury.

During the pump-down operation, make sure that the compressor is turned off before

you remove the refrigerant piping. Do not remove the connection pipe while the

compressor is in operation with 2-way or 3-way valve open. This may cause abnormal

pressure in the refrigeration cycle that leads to rupture and even injury.

CAUTION

This mark indicates procedures which, if improperly performed,

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

to property.

Do not install the unit in the following areas:

• Area with high salt content, such as at the seaside.

It will deteriorate metal parts, causing the parts to fall or the unit to leak water.

• Area ¿ lled with mineral oil or containing a large amount of splashed oil or steam, such

as a kitchen.

It will deteriorate plastic parts, causing the parts to fall or the unit to leak water.

• Area that generates substances that adversely affect the equipment, such as sulfuric

gas, chlorine gas, acid, or alkali.

It will cause the copper pipes and brazed joints to corrode, which can cause

refrigerant leakage.

• Area containing equipment that generates electromagnetic interference.

It will cause the control system to malfunction, preventing the unit from operating

normally.

• Area that can cause combustible gas to leak, contains suspended carbon ¿ bers or

À ammable dust, or volatile inÀ ammables such as paint thinner or gasoline.

If gas leaks and settles around the unit, it can cause a ¿ re.

• Avoid installing the unit at places where it will come into contact with animals’ urine or

ammonia.

Contents

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

2. ABOUT THE PRODUCT..............................................................................................2

2.1. Caution when using R410A refrigerant ..............................................................2

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

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

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

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

3.2. Drain processing ................................................................................................3

3.3. Installation dimensions .......................................................................................3

3.4. Transportation the outdoor unit ..........................................................................4

3.5. Installation the unit .............................................................................................4

4. PIPE SELECTION .......................................................................................................5

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

4.2. Protection of pipes .............................................................................................5

4.3. Refrigerant pipe size and allowable piping length .............................................5

4.4. Connectable pipe diameter and max. piping length ...........................................5

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

5.1. Brazing ...............................................................................................................5

5.2. Piping method ....................................................................................................5

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

6.1. The precautions of electrical wiring ....................................................................7

6.2. Knockout hole ....................................................................................................7

6.3. Selecting power supply cable and breaker ........................................................8

7. FIELD SETTING ..........................................................................................................9

7.1. Field setting switches .........................................................................................9

7.2. Function settings ................................................................................................9

8. PIPE INSTALLATION II .............................................................................................11

8.1. Sealing test ......................................................................................................11

8.2. Vaccum process ...............................................................................................11

8.3. Additional charging ...........................................................................................12

8.4. Installing insulation ...........................................................................................12

9. TEST RUN .................................................................................................................12

9.1. Pre-test run check items ..................................................................................12

9.2. Test operation method .....................................................................................13

9.3. Checklist ...........................................................................................................14

10. LED Display ...............................................................................................................14

10.1. Normal operation mode ...................................................................................14

10.2. Error display mode ...........................................................................................14

11. PUMP DOWN ............................................................................................................14

11.1. PUMP DOWN procedure ..................................................................................14

12. INFORMATION ..........................................................................................................15

En-1

Obtain the distribution network operator's agreement about the power capacity of the

power supply system, speci¿ cation of the cable and the harmonic current, and etc.

when you connect the outdoor unit with the power supply.

This product is intended for professional use.

Be sure to use a dedicated power circuit.

Never use a power supply shared by another appliance.

Do not use the unit for special purposes, such as storing food, raising animals, growing

plants, or preserving precision devices or art objects. It can degrade the quality of the

preserved or stored objects.

Be sure to perform the grounding work. Do not connect grounding wires to a gas pipe,

water pipe, lightning rod or grounding wire for a telephone.

Connection to a gas pipe may cause a ¿ re or explosion if gas leaks.

Connection to a water pipe is not an effective grounding method if PVC pipe is used.

Connection to the grounding wire of a telephone or to a lightning rod may cause a

dangerously abnormal rise in the electrical potential if lightning strikes.

Improper grounding work can cause electric shocks.

Perform draining for the unit according to the Installation manual. Check that the water

is properly drained.

If the drain processing is improperly installed, water may drip down from the unit,

wetting the furniture.

Do not touch the ¿ ns with bare hands.

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 quali¿ ed personnel with a capacity certi¿ cate for handling

refrigerant À uids. 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 3 mm 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.

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.

Children should be monitored to ensure they do not play with the device.

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.

Do not touch the aluminum ¿ ns of heat exchanger built-in the indoor or outdoor unit to

avoid personal injury when you install or maintain 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.

Regulation

• This unit must be connected to a power supply with impedance of 0.33 ohm and

below. If the power supply does not satisfy this requirement, please consult the

power supplier.

• Be sure to use a dedicated power circuit.

Never use a power supply shared by another appliance.

2. ABOUT THE PRODUCT

2.1. Caution when using R410A refrigerant

Pay careful attention to the following points:

• Since the working pressure is 1.6 times higher than that of R22 models, some of the

piping and installation and service tools are special. (See the table in the SPECIAL

TOOLS FOR R410A section.)

Especially, when replacing a conventional refrigerant (other than R410A) model with

a new refrigerant R410A model, always replace the conventional piping and À are nuts

with the R410A piping and À are nuts.

• Models that use refrigerant R410A have a different charging port thread diameter

to prevent erroneous charging with R22, R407C and for safety. Therefore, check

beforehand. [The charging port thread diameter for R410A is 1/2 UNF 20 threads per

inch.]

• Be more careful than the installation of the refrigerant (other than R410A) models,

not to enter foreign matters (oil, water, etc.) and other refrigerant into the piping. Also,

when storing the piping, securely seal the openings 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 side whose

composition is stable.

2.2. Special tools for R410A

Tool name Contents of change for R22 tool

Gauge

manifold

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.

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.

Charging hose

To increase pressure resistance, the hose material and base

size were changed.

Vacuum pump

A conventional vacuum pump can be used by installing a

vacuum pump adapter.

Be sure that the pump oil does not backÀ ow into the system.

Use one capable for vacuum suction of –100.7 kPa (5 Torr,

–755 mmHg).

Gas leakage

detector

Special gas leakage detector for HFC refrigerant R410A.

2.3. Accessories

Use connecting parts as required.

Do not throw away the connecting parts until the installation has been complete.

Name and shape Q’ty Application

Installation

manual

(This book)

Joint pipe A

For connecting gas pipe

(Straight type)

Joint pipe B

For connecting gas pipe

(L type)

Binder

For binding power cable and

transmission cable

Grommet edging

For power supply cable and

connection cable installation.

Attach to the knockout hole.

En-2

3. INSTALLATION WORK

Please obtain the approval of the customer when selecting the location of installation

and installing the main unit.

3.1. Selecting an installation location

WARNING

Install the unit in a location that can withstand its weight, and where it will not topple or

fall.

Calculate the proper refrigerant concentration if you will be installing it in an enclosed

location.

Total amount of replenished refrigerant

in refrigerant facility (kg)

Capacity of smallest room where

unit is installed (m

)

Refrigerant concentration

(kg/m

) (0.3kg/m

)

If the results of the calculation exceed the concentration limit, increase the room surface

area or install a ventilation duct.

CAUTION

Select an installation location by observing the following precautions:

• Install the unit horizontally. (Within 3 degrees)

• Install this unit in a location with good ventilation.

• If the unit must be installed in an area within easy reach of the general public, install

as necessary a protective fence or the like to prevent their access.

• Install the unit in an area that would not inconvenience your neighbors, as they could

be affected by the airÀ ow coming out from the outlet, noise, or vibration.

If it must be installed in proximity to your neighbors, be sure to obtain their approval.

• If the unit is installed in a cold region that is affected by snow accumulation, snow fall,

or freezing, take appropriate measures to protect it from those elements.

To ensure a stable operation, install inlet and outlet ducts.

• Install the unit in an area that would not cause problems even if the drain water is

discharged from the unit. Otherwise, provide drainage that would not affect people or

objects.

• Install the unit in an area that has no heat sources, vapors, or the risk of the leakage of

À ammable gas in the vicinity.

• Install the unit in an area that is away from the exhaust or vent ports that discharge

vapor, soot, dust, or debris.

• Install the indoor unit, outdoor unit, power supply cable, transmission cable and

remote control cable at least 1 meter away from a television or radio.

The purpose of this is to prevent TV reception interference or radio noise. (Even if

they are installed more than 1 meter apart, you could still receive noise under some

signal conditions.)

• Keep the length of the piping of the indoor and outdoor units within the allowable

range.

• For maintenance purposes, do not bury the piping.

• If children under 10 years old may approach the unit, take preventive measures so that

they cannot reach the unit.

3.2. Drain processing

• The drain water is discharged from the bottom of the equipment. Construct a drain

ditch around the base and discharge the drain water properly.

• When installing on a roof, perform À oor waterproo¿ ng properly.

Drain processing:

• The drain water from the base of the outdoor unit may generate during operations.

Perform drain processing, as necessary.

• When you want to prevent the drain water from leaking at the perimeter, construct a

ditch for the drain water as shown in the ¿ gure.

• Provide a central drain pan, as necessary.

Outdoor unit

50 mm

or more

10 mm

or more

3.3. Installation dimensions

CAUTION

When installing the outdoor unit, pay attention to the following items.

• Provide suf¿ cient installation space, such as transportation route, maintenance

space, ventilation space, refrigerant piping space, and passageways.

• Pay attention to the speci¿ cations of the installation space as shown in the ¿ gure.

If the unit is not installed according to speci¿ cations, it may cause short circuit or

poor performance. The unit may be prone to lapse into non-operation due to high

pressure protection.

• Do not place obstructions in the air À ow outlet direction. If there is an obstruction

in the outlet direction, install an outlet duct.

• When there is a wall in front of the unit, provide a space of 500 mm or more as

maintenance space.

• When there is a wall at the side of the unit, provide a space of 30 mm or more as

maintenance space.

• An outdoor temperature of 35 degrees in air-conditioned operation is assumed for

the installation space in this item. If the outdoor temperature exceeds 35 degrees,

provide a larger inlet space.

• If you are installing more outdoor units than indicated here, please ensure

suf¿ cient space or consult your distributing agent as it may affect the performance

due to short circuit and other problems.

3.3.1. When install near by limited height wall

(1) Single and multiple installations

• There are no restrictions on the height of the side wall.

• Provide installation spaces L1 and L2 in accordance with the table below according to

the wall height (front side, rear side) conditions.

• Provide installation spaces other than L1 and L2 in accordance with the conditions

shown in the ¿ gure below.

• Ventilation resistance can be ignorable when the distance from a wall or product, etc.

is larger than 2m.

Wall height condition Necessary installation space

When H1 is 1500 (mm) or less L1

500 (mm)

When H1 is 1500 (mm) or more L1

500+h1÷2 (mm)

When H2 is 500 (mm) or less L2

300 (mm)

When H2 is 500 (mm) or more L2

300+h2÷2 (mm)

Fig. 1

J



.

.



J

*

*

Wall

Fig. 2 Single installation

30 mm

or more

30 mm

or more

<Front>

<Rear>

Fig. 3 Multiple installations

30 mm

or more

30 mm

or more

30 mm

or more

<Front>

<Rear>

30 mm

or more

En-3

3.3.2. When install near by unlimited height wall

(2) Single and multiple installations

• There are no restrictions on the height of the wall.

• The wall (without height restrictions) must not exist on the both sides (left/right) of

outdoor unit. Also, must not exist on the both sides (front/rear) of outdoor unit.

• Provide installation spaces other than L3 in accordance with the conditions shown

in the ¿ gure below.

• Ventilation resistance can be ignorable when the distance from a wall or product,

etc. is larger than 2m.

Condition Necessary installation space

When B

400 (mm) L3

200 (mm)

When 30

B < 400 (mm) L3

200 + (400-B) ×3 (mm)

Fig. 4 Single installation

<Front>

<Rear>

300 mm

or more

200 mm

or more

200 mm

or more

<Front>

<Rear>

300 mm

or more

Fig. 5 Multiple installations

<Front>

<Rear>

300 mm

or more

300 mm

or more

200 mm 200 mm

800 mm

or more

Example:

When B is made 200 mm

200+(400-200)×3=800 mm

3.3.3. When there are obstacles above the product

When there are obstacles above the product, keep the minimum installation height as

shown in the ¿ gure and install the outlet duct.

The ef¿ ciency might decrease when the outlet duct etc. are installed.

500 mm

or more

Outlet duct

3.4. Transportation the outdoor unit

Hoisting method (Fig. A)

• When hanging the outdoor unit and conveying it to installation location, hang the unit

with rope by passing through the 4 opening holes on bottom of front and rear side as

shown in ¿ gure.

• Use 2 ropes at least 8m long. If used shorter length, it may cause to damage the unit.

• Use the suf¿ ciently strong rope to bear the unit’s weight.

• Place the protective board or ¿ ller cloth at the place where the cabinet may come into

contact with rope to prevent from damages. Without using them, cabinet may cause

to damage or deform.

• During the hanging unit, make sure to keep the unit horizontally to prevent the drop.

• Be careful not to shock the impacts during the hanging.

Conveying by forklift (Fig. B)

• When using the forklift to convey the unit, pass the forklift arms through the opening

space as shown in below.

Front: Bottom of the wooden delivery pallet.

Side: Space between pallet and cabinet.

• Enable to remove the pallet from cabinet.

• Be careful not to be damaged.

Conveying by forklift (Manual forklift: hand-fork)

• When using the manual forklift to convey the unit, pass the forklift arms through the

opening space between pallet and cabinet from side.

Fig. A

Opening space

Protective boards

Fig. B

Product mass (kg)

220

Fork (Forklift)

Delivery pallet

Fork (forklift) or

Fork (Manual forklift)

<Front>

<Side>

3.5. Installation the unit

• Install the unit horizontally. (Within 3 degrees).

• Install 4 or more anchor bolts at the 8 locations indicated by arrows (Fig. A).

• Place the left and right anchor bolts at a distance further away than 610 mm.

(Excluding the case where anchor bolts are installed at 8 locations.)

• To minimize vibration, do not install the outdoor unit directly on the ground. Instead,

install it on top of a ¿ rm platform (such as concrete block). (Fig. B)

• Keep the height of foundation base over 200 mm from the À oor surface.

• The foundation base should be able to support the product and the foot width of the

product should be more than 46.5 mm.

• Depending on the installation condition, vibration during the operation of the unit may

cause noise and vibration. Install vibration-proo¿ ng materials (such as rubber pads).

• Consider the removal space of the connection piping when installing the foundation.

• Secure the equipment ¿ rmly with anchor bolts, washers, and nuts.

Fig. A

732

765

160

160610

930

80 80

8-12×17 (hole)Bottom view

(Unit: mm)

Fig. B

Bolt (M10)

*Do not use a four-corner support foundation.

GoodProhibited Good

En-4

4. PIPE SELECTION

4.1. Selecting the pipe material

CAUTION

• This unit is designed speci¿ cally for use with the R410A refrigerant.

• Pipes for R407C or R22 may not be used with this unit.

• Do not use existing pipes.

• Use pipes that have clean external and internal sides without any contamination which

may cause trouble during use, such as sulfur, oxide, dust, cutting waste, oil, or water.

• It is necessary to use seamless copper pipes. Material: Phosphor deoxidized seamless

copper pipes. It is desirable that the amount of residual oil is less than 40 mg/10 m.

• Do not use copper pipes that have a collapsed, deformed, or discolored portion

(especially on the interior surface). Otherwise, the expansion valve or capillary tube

may become blocked with contaminants.

• Improper pipe selection will degrade performance. As an air conditioner using R410A

incurs pressure higher than when using conventional refrigerant, it is necessary to

choose adequate materials.

Table. A (Wall thickness and pipe material for each diameter)

Outside Diameter mm

12.70 22.22 25.40 28.58

Wall Thickness

0.8 1.0 1.0 1.0

Material

COPPER

JIS H3300 C1220T-O

or equivalent

COPPER

JIS H3300 C1220T-H

or equivalent

*1. Allowable tensile stress

33 (N/mm

) (125°C)

*2. Allowable tensile stress

61 (N/mm

) (125°C)

*3. Design pressure 4.2MPa

Please select the pipe size in accordance with local rules.

4.2. Protection of pipes

• Protect the pipes to prevent the entry of moisture and dust.

• Especially, pay attention when passing the pipes through a hole or connecting the

end of a pipe to the outdoor unit.

Location Working period Protection method

Outdoor

1 month or more Pinch pipes

Less than 1 month Pinch or tape pipes

Indoor - Pinch or tape pipes

4.3. Refrigerant pipe size and allowable piping length

CAUTION

• Keep the piping length between the indoor unit and outdoor unit within the

allowable tolerance.

Capacity [BTU/h class] 72,000 / 90,000

Pipe diameter (Standard)

[mm (in.)]

Liquid 12.70 (1/2)

Gas 25.40 (1)

Max. piping length (L1) [m] 75

Min. piping length (L1) [m] 5

Max. height difference (H1)

<Indoor unit to outdoor unit> [m]

*1: For the standard pipe diameter.

4.4. Connectable pipe diameter and max. piping length

• The ¿ gures enclosed by a thick-lined frame indicate the standard pipe diameter and

max. piping length.

Capacity [BTU/h class] 72,000 / 90,000

Pipe

diameter

[mm (in.)]

Liquid pipes

12.70 (1/2)

Gas pipes

22.22 (7/8)25.40 (1)28.58 (9/8)

Piping length

[m (m)]

Max. piping length < L1 >

(Max. chargeless length)

75 (20) 75 (20) 50 (20)

*1: Refer to “4.3.”.

5. PIPE INSTALLATION

5.1. Brazing

CAUTION

• If air or another type of refrigerant enters the refrigeration cycle, the internal

pressure in the refrigeration cycle will become abnormally high and prevent the unit

from exerting its full performance.

• Apply nitrogen gas while brazing the pipes.

Nitrogen gas pressure: 0.02 MPa (= pressure felt suf¿ ciently on the back of your

hand)

Fig.

Pressure regulating valve

Cap

Nitrogen gas

Brazing area

• If a pipe is brazed without applying nitrogen gas, it will create an oxidation ¿ lm.

This can degrade performance or damage the parts in the unit (such as the

compressor or valves).

• Do not use À ux to braze pipes. If the À ux is the chlorine type, it will cause the pipes

to corrode.

In addition, if the À ux contains À uoride, it will affect the refrigerant piping system due

to deterioration of refrigerant oil.

• For brazing material, use phosphor copper that does not require À ux.

5.2. Piping method

5.2.1. Opening the knockout hole

CAUTION

• Be careful to prevent panel deformed or damaged while opening the knockout hole.

• To prevent cutting of the wiring after the knockout hole was opened, remove the burrs

along the edge.

In addition, to prevent rusting, painting the edge with rust preventive paint is

recommended.

The piping can be connected from two directions; the front or the bottom.

(Knockout holes are provided so that the piping can be connected from two different

directions.)

Use the front knockout hole, as required.

Fig. A Knockout position

En-5

Fig. B Detail of knockout position (bottom)

Knockout hole

(Unit: mm)

Fig. C Detail of knockout position (front)

100

199

125

(Unit: mm)

Knockout

hole

5.2.2. Removing the pinch pipe

WARNING

Remove the pinch pipe only when the internal gas is completely drained.

If gas still remains inside, the piping may crack if you melt the brazing ¿ ller metal of

the junction area with a burner.

Before connecting the piping, remove the pinch pipe in accordance with the following

instructions:

1) Verify that the liquid side and gas side 3-way valves are closed. (Fig. A)

2) Cut the end of the liquid side and gas side pinch pipe and vent the gas inside the

pinch pipe. (Fig. B)

3) After all the gas is vented, melt the brazing ¿ lter metal on connecting part using a

burner and remove the pinch pipe. (Fig. C)

Fig. A

3-way valve

Pinch pipe

Fig. B

End of pinch pipe

Fig. C

5.2.3. Pipe connection

CAUTION

• Seal the pipe route hole with putty (¿ eld supply) such that there are no gaps.

Small insects or animals that are trapped in the outdoor unit may cause a short circuit

in the electrical component box.

• To prevent pipe damage; do not make sharp bends in the pipe.

Bend the pipe at a radius of 100~150 mm or greater.

• Do not bent pipe many times at same part to prevent break.

• Do not use À are connection on the indoor unit pipe until the connection piping has

been connected.

• Wait until the 3-way valve is completely cooled down before removing the pinch pipe

or brazing the joint pipe.

Otherwise, the 3-way valve may be damaged.

• If pipes are shaped by hand, be careful not to collapse them.

• Do not bend the pipes at an angle of more than 90°.

• When pipes are repeatedly bent or stretched, the material will harden, making it

dif¿ cult to bend or stretch them any more.

• Do not bend or stretch the pipes more than three times.

• Blaze the joint pipe onto the 3-way valves at the liquid and gas side.

Process the joint pipe appropriately so that it can be connected easily with the main

pipe.

• Blaze the joint pipe at the liquid and gas side with the main pipe.

* Be sure to supply nitrogen when blazing.

Fig. A

Liquid pipe

(Field supply)

Joint pipe

(accessory)

To indoor unit

Knockout

hole

Gas pipe

(Field supply)

Joint pipe

(Field supply)

Fig. B

Liquid pipe

(Field supply)

Joint pipe A

(accessory)

Knockout hole

Gas pipe

(Field supply)

En-6

6. ELECTRICAL WIRING

6.1. The precautions of electrical wiring

WARNING

• Wiring connections must be performed by a quali¿ ed person in accordance with

speci¿ cations.

The rated supply of this product is 50Hz, 400V of 3-phase, 4-wire. Use a voltage

within the range of 342-456V.

• Before connecting the wires, make sure the power supply is OFF.

• Select a breaker (earth leakage breaker) of appropriate capacity and install one at

every power supply of an outdoor unit. Wrong selection of breakers (earth leakage

breakers) or transition wiring will lead to electric shock and ¿ re.

• Do not connect AC power supply to the transmission line terminal board.

Improper wiring can damage the entire system.

• Install a breaker (earth leakage breaker) in accordance with the related laws and

regulations.

• Connect the connector cord securely to the terminal.

Faulty installation can cause a ¿ re.

• Make sure to secure the insulation portion of the connector cable with the cord clamp.

A damaged insulation can cause a short circuit.

• Never install a power factor improvement condenser. Instead of improving the power

factor, the condenser may overheat.

• Before servicing the unit, turn the power supply switch OFF. Then, do not touch

electric parts for 10 minutes due to the risk of electric shock.

• Make sure to perform grounding work. Improper grounding work can cause electric

shocks.

• A circuit breaker is installed in the permanent wiring. Always use a circuit that can trip

all the poles of the wiring and has an isolation distance of at least 3 mm between the

contacts of each pole.

• Do not modify power cable, use extension cable or branch wiring. Improper use may

cause electric shock or ¿ re by poor connection, insuf¿ cient insulation or over current.

• Use crimp-type terminals and tighten the terminal screws to the speci¿ ed torques,

otherwise, abnormal overheating may be produced and possibly cause serious

damage inside the unit.

• Fix cables so that cables do not make contact with the pipes (especially on high

pressure side). Do not make power supply cable and transmission cable come in

contact with valves (Gas).

• Securely install the electrical box cover on the unit. An improperly installed service

panel can cause serious accidents such as electric shock or ¿ re through exposure to

dust or water.

CAUTION

• The primary power supply capacity is for the air conditioner itself, and does not

include the concurrent use of other devices.

• Connect the power cables in positive phase sequence. If they are connected in

negative phase sequence, an error will be displayed. If there is a missing phase

connection, the unit will not operate normally. Do not connect a N phase (neutral

phase) cable to other phases (misconnection). Wrong wiring will lead to parts

damage.

• Do not use crossover power supply wiring for the outdoor unit.

• If the electrical power is inadequate, contact your electric power company.

• Install a breaker (earth leakage breaker) in a location that is not exposed to high

temperatures.

If the temperature surrounding the breaker (earth leakage breaker) is too high, the

amperage at which the breaker (earth leakage breaker) cuts out may decrease.

• Use a breaker (earth leakage breaker) that is capable of handling high frequencies.

Because the outdoor unit is inverter controlled, a high-frequency earth leakage

breaker is necessary to prevent a malfunction of the breaker itself.

• When the electrical switchboard is installed outdoors, place it under lock and key so

that it is not easily accessible.

• Do not fasten the power supply cable and transmission cable together.

• Always keep to the maximum length of the transmission cable. Exceeding the

maximum length may lead to erroneous operation.

• The static electricity that is charged to the human body can damage the control PC

Board when handling the control PC Board for function setting, etc.

Please keep caution to the following points.

Provide the grounding of Indoor unit, Outdoor unit and Option equipment.

Cut off the power supply (breaker).

Touch the metal section (such as the unpainted control box section) of the indoor or

outdoor unit for more than 10 seconds. Discharge the static electricity in your body.

Never touch the component terminal or pattern on the PC Board.

• Do not start operation until the refrigerant is charged completely. The compressor will

fail if it is operated before the refrigerant piping charging is complete.

• Transmission cable between indoor unit and outdoor unit is 230 V.

• Be sure not to remove thermistor sensor etc. from power wiring and connection

wiring. Compressor may fail if operated while removed.

CAUTION

• Start wiring work after closing branch switch and over current breaker.

• When using an earth leakage breaker that has been designed solely for ground fault

protection, be sure to install a fuse-equipped switch or circuit breaker.

How to connect wiring to the terminal

Caution when wiring cable

• When stripping off the coating of a lead wire, always use a special tool such as a wire

stripper. If there is no special tool available, carefully strip the coating with a knife etc.

(1) Use crimp-type terminals with insulating sleeves as shown in the ¿ gure below to

connect to the terminal block.

Strip : 10 mm

Crimp-type

terminal

Sleeve

(2) Securely clamp the crimp-type terminals to the wires using an appropriate tool so

that the wires do not come loose.

Screw with special washer

Crimp-type

terminal

Wire

Terminal blocks

Screw with

special washer

Crimp-type

terminal

(3) Use the speci¿ ed wires, connect them securely, and fasten them so that there is no

stress placed on the terminals.

(4) Use an appropriate screwdriver to tighten the terminal screws. Do not use a

screwdriver that is too small, otherwise, the screw heads may be damaged and

prevent the screws from being properly tightened.

(5) Do not tighten the terminal screws too much, otherwise, the screws may break.

(6) See the table below for the terminal screw tightening torques.

Tightening torque [N·m (kgf·cm)]

M4 screw 1.2 to 1.8 (12 to 18)

M5 screw 2.0 to 3.0 (20 to 30)

6.2. Knockout hole

CAUTION

• Be careful not to deform or scratch the panel while opening the knockout holes.

• After opening the knockout holes, remove burr on the edges, and attach the

conduit or grommet edging (accessories) to prevent damaging the cables.

It is recommended to apply rust proof paint on the edges to prevent rust.

Electric wires can be connected from the front or from the left.

(Knockout holes are prepared so that wiring can be made from two different directions.)

Use the knockout holes on the front and the left separately when necessary.

< Left view > < Front view >

(Unit: mm)(Unit: mm)

Length of the grommet edging Mounting the grommet edging

Grommet edging

(accessories)

Knockout hole

Ø 50

Ø 34.5

Ø 43.7

Ø 22.2

Ø 50

Ø 34.5

Ø 43.7

Ø 22.2

Knockout hole

diameter (mm)

Dimension

(mm)

Ø 50 147

Ø 43.7 130

Ø 34.5 100

Ø 22.2 60

En-7

6.3. Selecting power supply cable and breaker

CAUTION

• Regulation of wire size and circuit breaker differs from each locality, please refer in accordance with local rules.

Refer to the table for the wiring and breaker speci¿ cations of each installation condition.

Selecting power supply cable and breaker.

Capacity

[BTU/h class]

Breaker Outdoor unit power supply cable Transmission cable

MCCB

Capacity (A)

ELCB

leakage current

Power supply

cable (mm

)

Ground

cable (mm

)

Transmission cable

(mm

)

Max. wiring length (m)

72.000

30mA

0.1sec or less

6 (MIN.)

(Type 60245 IEC66)

1.5 (MIN.)*

(Type 60245 IEC57)

90.000

* If the transmission cable is longer than 50 m, use the bigger conductor size.

• These values are recommended data.

• Max. wiring length: Set a length so that the voltage drop is less than 2%. Increase the wire diameter when the wire length is long.

Fig. In case of connected outdoor unit

EARTH

Indoor unit

side terminal

Outdoor unit

side terminal

EARTH

(R)(S)(T)(N)

POWER SUPPLY

Power supply

400V~50Hz

ELCB

(Earth Leakage

Circuit Breaker)

Outdoor unit

Ground cable

Outdoor unit

Power supply cable

MCCB

(Mold Case

Circuit Breaker)

Transmission cable

Terminal block

POWER

INDOOR UNIT

Terminal block

Power supply

cable

140 ~ 150 mm

Transmission

cable

Power supply cable

Transmission cable

Cable clip

Binder

120 ~ 130 mm

80 ~ 90 mm

Power supply

cable

Transmission

cable

En-8

7. FIELD SETTING

CAUTION

Discharge the static electricity from your body before setting up the DIP switches.

Never touch the terminals or the patterns on the parts that are mounted on the board.

7.1. Field setting switches

Remove the front panel of the outdoor unit and the cover of the electrical component box to access the print circuit board of the outdoor unit.

Print circuit board switches for various settings and LED displays are shown in the ¿ gure.

Outdoor unit printed

circuit board

DIP switch

LED Lamp

7 Segment

LED Lamp

Push button

7.2. Function settings

Various functions can be set. Follow the setting method described in 7.2.1. to set as per the requirement.

Perform these settings after the indoor unit stops.

Table. Settings List

No Setting Item

7 segment LED

Factory setting Content

First 2 digits Last 2 digits

0 Forbidden 0 0 0 0 O

13Forbidden 1300 O

14 Forbidden 1 4 0 0 O

Energy-

saving

level

Level 1 (stop operation)

Settings for limited capacity operation or stopping the compressor can be

done. Settings will enable when input signal has been entered the external

input terminal “CN131”.

(For details, refer to 7.2.2. Energy-saving level setting.)

Level 2 (Limited at 50%) 0 1

Level 3 (Limited at 75%) 0 2 O

Level 4 (100%) 0 3

Low noise

operation

setting

Normal operation

00 O

Noise of the outdoor unit can be kept low. Set Low noise operation, which

will enable when the input signal has been entered the external input

terminal “CN131”.

(For details, refer to 7.2.3. Low noise operation setting.)

Low noise operation 0 1

Low noise

operation

level

setting

Level 1

00 O

This item allows you to con¿ gure the noise level when the unit operates

under low noise operation level.

Level 2 0 1

Forbidden 0 2

7.2.1. Setting method

(1) Turn on the power of the outdoor unit and enter standby mode.

POWER/MODE lamp lights up. (ERROR Lamp is off.)

(2) Press the MODE/EXIT button (SW107) once.

LED105 LED104 LED105 LED104

(3) Press the SELECT button (SW108), and display “F2” on the LED104.

*1 *1

LED105 LED104 LED105 LED104 LED105 LED104 LED105 LED104

(The display of the LED104 changes each time the SELECT button is pressed.)

(Function mode)

(Setting mode)

*1: The “F1” and “F9” modes are used for maintenance, so do not set them in regular operation.

POWER

LED105 LED104

SW101

ERROR

MODE

LED101

(GREEN)

MODE

/EXIT

PUMP

DOWN

SELECT

ENTER

SW107

SW108

SW109 SW102

LED102

(RED)

POWER/MODE Lamp: ON

MODE/EXIT button

SELECT button

ENTER button

PUMP DOWN button

(Do not operate in this chapter.)

DIP switch

(Do not operate.)

7 Segment

LED Lamp: OFF

ERROR Lamp: OFF

En-9

(4) When “F2” appears on the LED104, press the ENTER button (SW109).

LED105 LED104 LED105 LED104

(5) Referring to the Settings List shown below, press the SELECT button (SW108) and

display the code number of the mode you want to set on the LED105.

Ex.) To select the Low noise operation setting.

LED105 LED104 LED105 LED104

Next, press the ENTER button (SW109), and con¿ rm the selection of the mode you

want to set.

LED105 LED104 LED105 LED104

A À ashing display on the LED105 changes to an illuminated display, and an

illuminated display on the LED104 changes to À ashing display.

(6) Again, referring to the Settings List shown below, press the SELECT button (SW108),

and display the code number of the function you want to set on the LED104.

Ex.) To select the Low noise operation setting.

LED105 LED104 LED105 LED104

Next, press the ENTER button (SW109), and con¿ rm the selection of the mode you

want to set.

LED105 LED104 LED105 LED104

A À ashing display on the LED104 changes to an illuminated display. Settings are

complete with the procedures described above.

(7) To set another function, press the ENTER button (SW109) in the setting completed

status shown in step (5) above.

LED105 LED104 LED105 LED104

Repeat steps (5) and (6) above to set other functions.

When all settings are complete, perform the operation described in step (8) above

to exit.

(8) To exit FUNCTION SETTING, press the ENTER button (SW109) in the setting

completed status shown in step (6) above.

LED105 LED104 LED105 LED104

*2: 5 seconds after, even if ENTER button (SW109) is not pressed, LED105

changes to a À ashing display automatically.

Then, press the MODE/EXIT button (SW107) to exit FUNCTION SETTING MODE.

LED105 LED104 LED105 LED104

7.2.2. Energy- saving level setting (Optional parts and wiring are

required.)

This operation saves the capacity and reduces the power consumption.

Energy-saving level can be set by adding the contact input of commercially available

ON-OFF change-over switch to CN131 connector (external contact input sold separately)

located on the control board of outdoor unit.

Installation example

Power supply

• Voltage (Chart sign = Vcc) : DC5V to 24V

• The current capacity: About 100mA

Switch

(Chart sign = SW)

• Toggle switch or Rocker switch, etc : Switch which maintains the states.

• Prepare switches which are enough capable for DC 10mA current or more.

Resistance

(Chart sign = R)

• Adjust the resistance for current to about DC 10mA

(Example)

• In case of Vcc = DC 5V : Rated resistance value 470ȍ 1/4W

• In case of Vcc = DC 12V : Rated resistance value 1kȍ 1/4W

• In case of Vcc = DC 24V : Rated resistance value 2.2kȍ 1/4W

* Make the distance from the PC board

to the Relay Unit within 10 m.

Outdoor

control PC board

Connected unit

Red

White

Black

Power

supply

*10 m

Surely insulate with

insulation tape etc.

since this wire is not used.

Field supply

Signal

VccVcc

CN131

Setting Method

• Perform the following settings according to the function setting method described in

previous section.

Set “F2” with “1: FUNCTION SETTING”.

Set “2: Set the ¿ rst two digits of setting item” to “30”.

Set “3: Set the last two digits of setting item” to “00 (Level 1)” - “03 (Level 4)”.

* Factory default setting is “02 (Level 3)”.

Example) For setting energy-saving level to 50% (Level 2).

LED105

LED104

7.2.3. Low noise operation setting

7.2.3.1. Operation setting (Optional parts and wiring are required.)

Outdoor unit is operated in such a way that noise level is reduced below normal level.

Low noise operation level is possible by adding the contact input of commercially

available timer, or ON-OFF change-over switch to CN131 connector (external contact

input sold separately) located on the control board of outdoor unit.

Installation example

Power supply

• Voltage (Chart sign = Vcc) : DC5V to 24V

• The current capacity: About 100mA

Switch

(Chart sign = SW)

• Toggle switch or Rocker switch, etc : Switch which maintains the states.

• Prepare switches which are enough capable for DC 10mA current or more.

Resistance

(Chart sign = R)

• Adjust the resistance for current to about DC 10mA

(Example)

• In case of Vcc = DC 5V : Rated resistance value 470ȍ 1/4W

• In case of Vcc = DC 12V : Rated resistance value 1kȍ 1/4W

• In case of Vcc = DC 24V : Rated resistance value 2.2kȍ 1/4W

* Make the distance from the PC board

to the Relay Unit within 10 m.

Outdoor

control PC board

Connected unit

Red

White

Black

Power

supply

*10 m

Surely insulate with

insulation tape etc.

since this wire is not used.

Field supply

Signal

VccVcc

CN131

En-10

Setting Method

• Perform the following settings according to the function setting method described

in previous section.

Set “F2” in “1: FUNCTION SETTING”.

Set “2: Set the ¿ rst two digits of setting item” to “41”.

Set “3: Set the last two digits of setting item” to “00 (Normal Operation)” or

“01 (Low Noise Operation)”.

* Factory default setting is “00 (Normal Operation)”.

Example) For setting low noise operation.

LED105

LED104

7.2.3.2. Operation level setting

Noise level of low noise operation can be set.

Setting Method

• Perform the following settings according to the function setting method described

in previous section.

Set “F2” in “1: FUNCTION SETTING”.

Set “2: Set the ¿ rst two digits of setting item” to “42”.

Set “3: Set the last two digits of setting item” to “00 (Level 1)” - “01 (Level 2)”.

* Factory default setting is “00 (Level 1)”.

Example) For setting operation noise level to Level 2.

LED105

LED104

8. PIPE INSTALLATION II

Fig. A Connection system

Outdoor unit

Pressure gauge

Vaccum

pump

Scale

Pressure regulating valve

Nitrogen

Indoor unit

Fig. B

Charging cap

Valve

Cap

Hexagon

wrench

Open

Spindle

Table. A

Pipe Spindle Cap Charging cap

Liquid valve

9.0 to 12.0 N·m

(90 to 120 kgf·cm)

20.0 to 24.0 N·m

(200 to 240 kgf·cm)

12.5 to 16.0 N·m

(125 to 160 kgf·cm)

Gas valve

27.0 to 33.0 N·m

(270 to 330 kgf·cm)

25.0 to 30.0 N·m

(250 to 300 kgf·cm)

12.5 to 16.0 N·m

(125 to 160 kgf·cm)

8.1. Sealing test

CAUTION

• Use only nitrogen gas.

Never use refrigerant gas, oxygen, inÀ ammable gas, or poisonous gas to pressurize

the system.

(If oxygen is used, there is the danger of an explosion.)

• Do not apply shock during sealing test.

It can rupture the pipes and cause serious injury.

• Do not turn on the power unless all operations are complete.

• Do not block the walls and the ceiling until the sealing test and the charging of the

refrigerant gas have been completed.

After connecting the pipes, perform an sealing test.

Recheck that the spindle of the 3-way valve are closed before performing a sealing test.

(Fig. B)

Pour nitrogen gas through both the liquid pipe and the gas pipe.

Pressurize nitrogen gas to 4.2 MPa to perform the sealing test.

Check all À are connection areas and welded areas.

Then, check that the pressure has not decreased.

Compare the pressures after pressurizing and letting it stand for 24 hours, and check

that the pressure has not decreased.

* When the outdoor temperature changes 5 °C, the test pressure changes 0.05 MPa.

If the pressure has dropped, the pipe joints may be leaking.

If a leakage is found, immediately repair it and perform a sealing test again.

* Decrease the pressure of nitrogen gas before blazing

After completing the sealing test, release the nitrogen gas from both valves.

Release the nitrogen gas slowly.

8.2. Vaccum process

CAUTION

• Do not turn on the power unless all operations are complete.

• If the system is not evacuated suf¿ ciently, its performance will drop.

• Be sure to evacuate the refrigerant system using a vacuum pump.

• The refrigerant pressure may sometimes not rise when a closed valve is opened

after the system is evacuated using a vacuum pump. This is caused by the closure

of the refrigerant system of the outdoor unit by the electronic expansion valve.

This will not affect the operation of the unit.

• Use a clean gauge manifold and charging hose that were designed speci¿ cally for

use with R410A. Using the same vacuum equipment for different refrigerants may

damage the vacuum pump or the unit.

• Do not purge the air with refrigerants, but use a vacuum pump to evacuate the

system.

• If moisture might enter the piping, follow below.

(I.e., if doing work during the rainy season, if the actual work takes long enough

that condensation may form on the inside of the pipes, if rain might enter the pipes

during work, etc.)

• After operating the vacuum pump for two hours, pressurize to 0.05 MPa (i.e.,

vacuum breakdown) with nitrogen gas, then depressurize down to -100.7kPa

(-755mmHg) for an hour using the vacuum pump (vacuum process).

• If the pressure does not reach -100.7kPa (-755mmHg) even after

depressurizing for at least two hours, repeat the vacuum breakdown - vacuum

process.

After vacuum process, maintain the vacuum for an hour and make sure the

pressure does not rise by monitoring with a vacuum gauge.

Evacuation procedure

1) Remove the caps of the gas pipe and liquid pipe and check that the valves are

closed.

2) Remove the charging cap.

3) Connect a vacuum pump and a pressure gauge to a charging hose and connect it

to the charging port.

4) Activate the vacuum pump and vacuum the indoor unit and connection piping until

the pressure gauge becomes -100.7kPa (-755mmHg).

Evacuate from both the gas pipe and the liquid pipe.

5) Continue evacuating the system for 1 hour after the pressure gauge reads

-100.7kPa (-755mmHg).

6) Remove the charging hose and reinstall the charging cap.

En-11

8.3. Additional charging

CAUTION

• Do not turn on the power unless all operations are complete.

• After evacuating the system, add refrigerant.

• Do not charge the system with a refrigerant other than R410A.

• Always keep to the limit on the total amount of refrigerant. Exceeding the limit

on the total amount of refrigerant will lead to malfunction during charging of

refrigerant.

• Do not reuse recovered refrigerant.

• Use an electronic scale to measure the charging amount of refrigerant.

Adding more refrigerant than the speci¿ ed amount will cause a malfunction.

• Add refrigerant by charging the system with the refrigerant in the liquid state.

• 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

side whose composition is stable. Adding refrigerant through the gas pipe will

cause a malfunction.

• Check if the steel cylinder has a siphon installed or not before ¿ lling. (There is an

indication “with siphon for ¿ lling liquid” on the steel cylinder.)

Filling method for cylinder with siphon

Set the cylinder vertical and ¿ ll with the liquid.

(Liquid can be ¿ lled without turning bottom up with the

siphon inside.)

Liquid

Gas

R410A

Filling method for other cylinders

Turn bottom up and ¿ ll with liquid.

(Be careful to avoid turning over the cylinder.)

Liquid

Gas

R410A

• Be sure to use the special tools for R410A for pressure resistance and to avoid

mixing of impure substances.

• If the units are further apart than the maximum pipe length, correct operation

cannot be guaranteed.

• Make sure to back closing valve after refrigerant charging. Otherwise, the

compressor may fail.

• Minimize refrigerant release to the air. Excessive release is prohibited under the

Freon Collection and Destruction Law.

8.3.1. If additional refrigerant is required

• When the piping is longer than chargeless piping length, additional charging is

necessary.

1) Remove the charging cap from the liquid pipe.

2) Attach a charging hose to the refrigerant cylinder, and connect it to the charging

port.

3) Add refrigerant by calculating the additional refrigerant volume in accordance with

the table below.

4) Remove the charging hose and install the charging cap.

5) Remove the body caps (gas pipe, and liquid pipe), and open the valves.

6) Close the body caps.

* Tighten the body caps and charging caps to the torque values speci¿ ed in the Table A.

To open and close the valves,

Use an M5 hexagon wrench for liquid pipes.

Use an M10 hexagon wrench for gas pipes.

Piping length (L1) *Chargeless [m]

Additional charging amount

L1* > Chargeless piping length

Refrigerant pipe

size

[mm (in.)]

Piping length

Standard ~20 m 30 m 40 m 50 m 60 m 70 m 75 m g/m

Liquid

Gas

12.70 (1/2)

25.40 (1)

None

1,100 g 2,200 g 3,300 g 4,400 g 5,500 g 6,050 g 110 g/m

Size down ~20 m 30 m 40 m 50 m 60 m 70 m 75 m g/m

Liquid

Gas

12.70 (1/2)

22.22 (7/8)

None

1,100 g 2,200 g 3,300 g 4,400 g 5,500 g 6,050 g 110 g/m

Size up ~20 m 30 m 40 m 50 m g/m

Liquid

Gas

12.70 (1/2)

28.58 (9/8)

None

1,100 g 2,200 g 3,300 g 110 g/m

Refer to “4.3.”.

8.4. Installing insulation

• Install insulation material after conducting the “8.1. Sealing Test”.

• To prevent condensation and water droplets, install insulation material on the

refrigerant pipe.

• Refer to the table to determine the thickness of the insulation material.

• If the outdoor unit is installed at a level that is higher than the indoor unit, the water

that has condensed in the 3-way valve of the outdoor unit could travel to the indoor

unit.

Therefore, use putty in the space between the pipe and the insulation to prevent the

entry of water.

Putty

Insulation

Table. Selection of insulation

(for using an insulation material with equal heat transmission rate or below

0.040W/(m·k))

Insulation material

Minimum thickness (mm)

Relative humidity

70%

75%

80%

85%

Pipe

diameter

(mm)

12.70 10 12 15 19

22.22 11 13 17 22

25.40 11 13 17 22

28.58 11 14 18 23

* When an ambient temperature and relative humidity exceed 32 °C, please strengthen

heat insulation of refrigerant pipe.

9. TEST RUN

9.1. Pre-test run check items

Before the test operation, refer to the ¿ gure and check the following items.

Is the outdoor unit securely installed?

Have you performed gas leakage inspection?

(Connection joints of various pipes (À ange connection, brazing))

Is the heat insulation done completely?

(Gas pipe, liquid pipe, drain hose extension on indoor unit side, etc.)

Is the water discharging from drain without any problems?

Are the cables connected correctly?

Are the cables as per speci¿ cations?

Is the earth wire connected accurately?

Are there any obstacles blocking the suction gate, and outlet of the indoor/outdoor

units?

Have you ¿ lled the speci¿ ed amount of refrigerant?

Are the stop valves of gas pipe and liquid pipe fully open?

Has the power been supplied to crankcase heater for more than 6 hours?

After checking that the above items are all in order, refer to “9.2. Test operation

method” to test operation the unit. If there are problems, adjust immediately and

recheck.

En-12

9.2. Test operation method

Be sure to con¿ gure test run settings only when the outdoor unit has stopped

operating.

Test operation setting method (It can be performed in the following two ways)

• Set with test operation setting (refer to installation instructions manual of indoor unit

for further details) available in the remote controller.

• “Cooling Operation” and “Heating Operation” can be set using MODE/EXIT button,

SELECT button and ENTER button available on the board of outdoor unit. *(*Make

sure to perform the ¿ rst test operation with cooling operation.) Set as per the

procedure given below.

• Depending on the communication status between the indoor and outdoor units,

it may take several minutes for the system to start operating after settings for the

test run are complete.

• After the test run settings are complete, the outdoor units and the connected

indoor units will start operating. Room temperature control will not activate during

test operation (continuous operation).

• If a knocking sound can be heard in the liquid compression of the compressor,

stop the unit immediately and then energize the crank case heater for a suf¿ cient

length of time before restarting the operation.

9.2.1. Setting method on outdoor unit board

(1) Turn on the power of the outdoor unit and enter standby mode. POWER/MODE Lamp

lights up.

(ERROR lamp is off.)

(2) Press the MODE/EXIT button (SW107) once.

LED105 LED104 LED105 LED104

POWER

LED105 LED104

SW101

ERROR

MODE

LED101

(GREEN)

MODE

/EXIT

PUMP

DOWN

SELECT

ENTER

SW107

SW108

SW109 SW102

LED102

(RED)

ENTER button

SELECT button

PUMP DOWN button

(Do not operate in this chapter.)

DIP switch

(Do not operate.)

7 Segment

LED Lamp

ERROR Lamp

POWER/MODE

Lamp

MODE/EXIT

button

(3) Press the SELECT button (SW108), and display “F3” on the LED104.

*1 *1

LED105 LED104 LED105 LED104 LED105 LED104 LED105 LED104

(The display of the LED104 changes each time the SELECT button is pressed.)

(Setting mode)

(Function mode)

*1: The “F1” and “F9” modes are used for maintenance, so do not set them in regular operation.

(4) When “F3” appears on the LED104, press the ENTER button (SW109).

LED105 LED104 LED105 LED104

A À ashing display appears on the LED105, and the À ashing display of “F3” on the LED104 go out.

(5) Press the SELECT button (SW108), and display the code number of the mode you want to get on the LED105.

*2 *2 *2

LED105 LED104 LED105 LED104 LED105 LED104

Cooling test operation Heating test operation Test operation stop

*2: Numbers other than 00-02 are used during maintenance. Please do not use during normal operation.

(6) After con¿ rming the operation mode you want to set, press ENTER button (SW109) for more than 3 seconds.

Ex.) To select the cooling test operation setting.

LED105 LED104 LED105 LED104

Once “done” has displayed, operation will start after a few minutes. With this, setting is complete.

After operation has started, verify according to “9.3. Checklist” provided below.

If you want to stop during test operation, set to test operation stop described in (5) above and execute.

(7) After the completion of test operation, turn off the power, attach electrical components cover and install front panel of outdoor unit.

Note

• Test run will ¿ nish after about 60 minutes automatically.

• Test run may be stopped before operating for 60 minutes if an error occurs after a starting test run.

• Switching between heating and cooling is not possible during test operation. If you want to change the operation mode, stop the test operation,

and change the operation mode once again with mode selection of step (5).

If switching between heating and cooling is done during test operation, display as per the right ¿ gure will appear and settings will not change.

* After 5 seconds since the display of right ¿ gure, you can return to screen of step (5) by holding the “Enter” switch.

LED105 LED104

En-13

9.3. Checklist

Check items during test operation.

Is the outdoor unit making any abnormal noise or vibrating signi¿ cantly?

Is the cold air or hot air blowing from indoor unit according to the operation

mode?

Check that “Err” is not displayed in 7 segment LED lamp.

If, it has displayed, check the error content as per 10.2. described later.

Operate the unit according to the operating manual provided with the indoor unit,

and check that it is operating normally.

10. LED Display

You can determine the operating status by the lighting up and À ashing of the LED lamp.

POWER

LED105 LED104

SW101

ERROR

MODE

LED101

(GREEN)

MODE

/EXIT

PUMP

DOWN

SELECT

ENTER

SW107

SW108

SW109 SW102

LED102

(RED)

7 Segment LED Lamp

(LED105 and LED104)

POWER/MODE

Lamp (LED101)

ERROR Lamp (LED102)

MODE/EXIT

button (SW107)

(Do not operate

in this chapter.)

PUMP DOWN button (SW102)

ENTER button (SW109)

(Do not operate in this chapter.)

It lights up when

power on.

SELECT button (SW108)

It will À ash rapidly in case of an

error.

DIP switch (Do not operate.)

Status of the unit will display.

10.1. Normal operation mode

Operation status is displayed in 7 Segment LED Lamp (LED105 and LED104).

Mode CODE DESCRIPTION

Operation

CL Cooling

Ht Heating

d F During defrosting operation

P C During power saving operation

L n During low noise operation

Stopped

10.2. Error display mode

10.2.1.

Method for ascertaining the errors

(1) When an error has occurred, ERROR LED (LED102) will À ash rapidly, and as

shown in the ¿ gure below, 7 Segment LED will alternately display “Err” and number

of errors.

LED105 LED104 LED105 LED104

Alternate display

Error display

Display number of errors

(2) Error contents will display if ENTER button (SW109) is pressed in the state of (1).

For error contents, refer to the list of error code described later.

LED105 LED104

Ex.) “E.0C” is displayed.

Discharge temperature

thermistor error.

(3) If SELECT button (SW108) is pressed in the state of (2), contents of all the errors

will display.

Error 1. Error 2. Error 3.

LED105 LED104LED105LED104 LED104LED105

(4) If ENTER button (SW109) is pressed, it will return to state of (1).

If no action is taken, it will return to the state of (1) after 60 seconds.

Note

• In case the errors are resolved, it will return to “Normal operation mode” described in

10.1. earlier.

10.2.2. Error code check table

CODE DESCRIPTION

E. 06. Outdoor heat exchanger temperature sensor (outlet) error

E. 0A. Outdoor temperature sensor error

E. 0C. Outdoor discharge pipe temperature sensor error

E. 0E. Heat sink thermistor (inverter) error

E. 0F. Discharge temperature error

E. 13. Indoor signal error

E. 15. Compressor temperature sensor error

E. 16.

Pressure switch error, Pressure sensor error

E. 17. IPM protection

E. 1A. Compressor location error

E. 1b. Outdoor fan error

E. 24. Excessive high pressure protection

E. 2b. Compressor temperature error

E. 2E. Inverter error

E. 2F. Low pressure error

E. 98. Pump down error

E. 99. Indoor unit error condition

LED lamp :

0123456789

AbCdEFHi JL

noprStUvy-

11. PUMP DOWN

WARNING

• Never touch electrical components such as the terminal blocks or reactor except the

switch on the display board. It may cause a serious accident such as electric shock.

CAUTION

• Perform the pump down operation before disconnecting any refrigerant pipe or

electric cable.

• Collect refrigerant from the service port if pump down cannot be performed.

11.1. PUMP DOWN procedure

POWER

LED105 LED104

SW101

ERROR

MODE

LED101

(GREEN)

MODE

/EXIT

PUMP

DOWN

SELECT

ENTER

SW107

SW108

SW109 SW102

LED102

(RED)

POWER/MODE lamp

SELECT button

(Do not operate

in this chapter.)

ENTER button

(Do not operate in this chapter.)

PUMP DOWN button

ERROR lamp

MODE/EXIT

button

(Do not operate

in this chapter.)

DIP switch

(Do not operate.)

7 Segment

LED Lamp

(1) Con¿ rm that the power is off, and then open the service panel.

(2) Turn the power on.

(3) Check that stop valves of liquid side and gas side are fully and properly open.

(4) Hold PUMP DOWN button (SW102) for over 3 seconds. 7 Segment LED of board

on outdoor unit will À ash, and compressor will start the operation.

LED105

LED104

• Fan of indoor unit will start the operation automatically.

• Compressor and outdoor fan will start the operation automatically.

• It you want to stop pump down operation once it has started, hold PUMP DOWN button

(SW102) again for over 3 seconds.

En-14

(5) LED display of outdoor unit board will light-up with the display of “rUn” after around

5 minutes of the start of compressor operation. At this time, ¿ rmly close the three-

way valve of liquid side immediately.

• If the valve on liquid side is not closed at this stage, pump down will not be

possible.

LED105

LED104

(6) LED display of outdoor

unit board will change as

shown in the right ¿ gure

after around 2-7 minutes

of the start of compress or

operation. At this time, ¿ rmly

close the three-way valve of

gas side immediately.

LED105

LED104

• If the valve on gas side is not closed at this stage, refrigerant may runoff through

pipes after the compressor is stopped.

(7) After “End” displays, compressor and outdoor fan will automatically stop after

around 1 minute.

LED105

LED104

• If pump down operation has ended normally (LED display ¿ gure above), outdoor

unit will remain stopped until the power supply is disconnected.

(8) Turn the power off. PUMP DOWN is completed.

Note

• For performing pump down once again after pump down task has failed and

compressor has automatically stopped; open the close three-way valve (both liquid

and gas side), disconnect the power supply at once and restore it after 2-3 minutes,

and then perform pump down operation.

• For restarting the operation after the completion of pump down operation; open the

close three-way valve (both liquid and gas side), disconnect the power supply at

once and restore it after 2-3 minutes, and make sure to perform test operation in

“Cooling”.

• If an error occurs during pump down operation; as shown in the ¿ gure below, “E.98.”

(pump down error) will appear.

In such case, recover the refrigerant from service port.

POWER/MODE

lamp: OFF

ERROR

lamp: ON

7 Segment

LED Lamp

POWER

LED105 LED104

ERROR

MODE

LED101

(GREEN)

LED102

(RED)

12. INFORMATION

Main contents of label

Item Detail

1. Model name Model name

2. Serial number Serial number

3. Electric characteristics Phase, rated voltage, and frequency

4. Capacity Cooling/heating capacity

5. Current Electric current during cooling/heating operation

6. Input power Input during cooling/heating operation

7. Max. Current Maximum electric current

8. Noise level Noise level

9. Refrigerant Refrigerant type and initial charging amount

10. Origin Origin country

11. Manufacturer

Manufacturer

FUJITSU GENERAL LIMITED

Address: 1116, Suenaga, Takatsu-ku, Kawasaki

213-8502, Japan

Label

Step (5)

Closing direction

Step (6)

Closing direction

Hexagon wrench

Liquid pipe

Gas pipe

En-15

Fujitsu AOYA72LALT Guide d'installation

Marque: Fujitsu

Modèle: AOYA72LALT

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