Fujitsu AJ*A72LALH Series, AJ*A90LALH Series, AJ*108LALH Series, AJ*126LALH Series, AJ*144LALH Series Installation Manual

English

VRF SYSTEM
OUTDOOR UNIT

AJ□A72LALH
AJ

□

A90LALH

AJ

□

108LALH

AJ

□

126LALH

AJ

□

144LALH

INSTALLATION MANUAL

For authorized service personnel only.

PART NO. 9378945029-03

English

Contents

1. SAFETY PRECAUTIONS …………………………… 2

2. ABOUT THE PRODUCT ……………………………… 4

2. 1. Caution when using R410A refrigerant………… 4

2. 2. Special tools for R410A ………………………… 4

2. 3. Accessories ……………………………………… 4

2. 4. Combinations …………………………………… 4

2. 5. Option parts ……………………………………… 5

2. 6. Header …………………………………………… 5

3. INSTALLATION WORK ……………………………… 6

3. 1. Selecting an installation location ……………… 6

3. 2. Drain processing ………………………………… 6

3. 3. Installation dimensions ………………………… 7

3. 4. Transportation the outdoor unit ………………… 9

3. 5. Installation the unit …………………………… 10

4. SYSTEM CONFIGURATION ……………………… 11

4. 1. System confi guration ………………………… 11

4. 2. Pipe selection ………………………………… 12

4. 3. Protection of pipes …………………………… 13

5. PIPE INSTALLATION ……………………………… 13

5. 1. Brazing ………………………………………… 13

5. 2. Indoor unit pipe connections ………………… 13

5. 3. Piping method ………………………………… 14

5. 4. Multiple connections ………………………… 16

6. ELECTRICAL WIRING ……………………………… 18

6. 1. The precautions of electrical wiring ………… 18

6. 2. Knockout hole ………………………………… 19

6. 3. Selecting power supply cable and breaker … 20

6. 4. Transmission line ……………………………… 21

6. 5. Wiring method ………………………………… 22

6. 6. External input and external output ………… 24

7. FIELD SETTING …………………………………… 27

7. 1. Field setting switches ………………………… 27

7. 2. DIP switch setting …………………………… 27

7. 3. Rotary switch setting ………………………… 29

7. 4. Push button setting …………………………… 29

7. 5. Address setting for signal amplifi ers ………… 33

7. 6. Indoor unit address setting …………………… 33

7. 7. Resistance measurement of transmission cable
(Measure with breaker OFF) ………………… 35

8. PIPE INSTALLATION II …………………………… 36

8. 1. Sealing test …………………………………… 36

8. 2. Vacuum process ……………………………… 37

8. 3. Additional charging …………………………… 37

8. 4. Installing insulation …………………………… 39

9. TEST RUN …………………………………………… 40

9. 1. Pre-test run check items ……………………… 40

9. 2. Test operation method ……………………… 40

9. 3. Checklist ……………………………………… 42

10. LED Display ………………………………………… 42

10. 1. Normal operation mode ……………………… 42

10. 2. Error display mode …………………………… 43

11. INFORMATION ……………………………………… 44

En-2

SAFETY PRECAUTIONS1.

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
fi 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-specifi ed parts will cause serious accidents such as falling unit, refrigerant leakage, water leakage,
electric shock, and fi re.

To install a unit that uses the R410A refrigerant, use dedicated tools and piping materials that have been manu-•
factured 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.
It will also cause serious accidents such as refrigerant leakage, water leakage, electric shock, and fi re.

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 fi re, it will create a hazardous gas.

Electrical work must be performed in accordance with this Installation manual by a person certifi ed under the •
national or regional regulations. Be sure to use a dedicated circuit for the unit.
An insuffi cient power supply circuit or improperly performed electrical work can cause serious accidents such as
electric shock or fi 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 fi 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 fi 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 fi 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 fi 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.•

En-3

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 specifi ed power cable. Poor connection, poor insulation, and exceeding the allowable current will lead •
to electric shock and fi re.

Attach the connecting cables securely to the terminal. Or secure it fi rmly with a "wiring suppressor".•
Loose connection will lead to malfunction, electric shock, and fi 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 fi 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 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 breakage 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.

Obtain the distrib• ution network operator's agreement about the power capacity of the power supply system,
specifi cation of the cable and the harmonic current, and etc. when you connect the outdoor unit with the power
supply.
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.
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 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 fi 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 fi bers or fl ammable dust, or volatile •
infl ammables such as paint thinner or gasoline.
If gas leaks and settles around the unit, it can cause a fi re.
Avoid installing th• e unit at places where it will come into contact with animals’ urine or ammonia.

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.

Ground the unit. Do not connect the ground wire to a gas pipe, water pipe, lightning rod, or a telephone ground •
wire. Improper grounding may cause electric shock.

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 fi ns with bare hands.•

Be sure not to start or stop the operation of air conditioning with power breaker. Otherwise, it may cause malfunc-•
tion or water leakage.

When setting it up near the equipment that generates electromagnetic waves and the equipment that generates •
the higher harmonics wave, be sure to take measures against noise. Otherwise, it may cause malfunction or
failure.

When energizing to the crankcase heater, please turn on the power 12 hours or earlier before operation begins. •
When the energizing time is short, it may cause failure. Besides, please do not turn off power during the busy
season.

En-4

ABOUT THE PRODUCT2.

Caution when using R410A refrigerant2. 1.

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 fl are nuts with the R410A piping and fl 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.

Special tools for R410A2. 2.

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.

Vacu um pump

A conventional vacuum pump can be used by installing a vacuum pump adapter.

A conventional vacuum pump can be used by installing a vacuum pump adapter. •
Be sure that the pump oil does not back fl ow into the system. Use one capable for •
vacuum suction of -100.7kPa (5 Ton, -755mmHg).

Gas leakage detector Special gas leakage detector for HFC refrigerant R410A.

Accessories2. 3.

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

Name and shape Q’ty Application Name and shape Q’ty Application

Specifi cations
manual

1

—Joint pipe B1For connecting gas pipe

(L type)

Installation
manual

1

(This book) Binder

9

For binding power cable
and transmission cable

Joint pipe A

1

For connecting gas pipe
(Straight type)

Combinations2. 4.

A maximum of 3 outdoor units can be connected to 1 refrigerant system.
The combination of outdoor units per refrigerant system and the number of indoor units that can be connected are as
follows:

En-5

Outdoor Unit

Model Name Nominal System Capacity (HP)

AJ

A72LALH 8

AJ

A90LALH 10

AJ

108LALH 12

AJ

126LALH 14

AJ

144LALH 16

Installation space combination

Combination (HP) 8 1012141618202224262830323436384042444648

Outdoor Unit 1 (HP) 8 1012141610121212141616161212141616161616
Outdoor Unit 2 (HP) - - - - - 8 8 10 12 12 12 14 16 12 12 12 12 14 16 16 16

Outdoor Unit 3 (HP) -------------1012121212121416

Maximum Connectable
Indoor Unit

15 16 17 21 24 32 32 32 35 39 42 45 48 48 48 48 48 48 48 48 48

When connecting outdoor units, install the outdoor unit with the largest nominal system capacity nearest to the refrigerant pipe

and indoor unit, followed by those with lesser nominal system capacities. (Outdoor unit 1

<
=

Outdoor unit 2

<
=

Outdoor unit 3)

Energy-saving combination

Combination (HP) 8 1012141618202224262830323436384042444648

Outdoor Unit 1 (HP) - - - - 8 - - 14 8 10 12 14 12 14 14 - 14 14 16 - ­Outdoor Unit 2 (HP) - - - - 8 - - 88888121214-141414- -
Outdoor Unit 3 (HP) --------8888888-121414--

Maximum Connectable
Indoor Unit

* * * * 30 * * 33 36 39 42 45 48 48 48 * 48 48 48 * *

* Means that the energy-saving combination is unavailable.
When connecting outdoor units, install the outdoor unit with the largest nominal system capacity nearest to the refrigerant pipe

and indoor unit, followed by those with lesser nominal system capacities. (Outdoor unit 1

>
=

Outdoor unit 2

>
=

Outdoor unit 3)

Option parts2. 5.

CAUTION

The following parts are optional parts specifi c to R410A refrigerant.
Do not use parts other than those listed below.

Separation tube kit2. 5. 1.

Table A indicates the separation tube to be used when installing multiple outdoor units.
Table B indicates the separation tube to be used for connecting the outdoor and indoor units.
Refer to the installation instruction sheet for the outdoor unit branch kit and the separation tubes for installation speci­fi cations.

A Separation tube for installing multiple out-Tab le.

door units

Separation tube

Total cooling capacity of

indoor unit (kW)

UTR-CP567X ALL

B Selection of separation tubesTabl e.

Separation tube

Total cooling capacity of

indoor unit (kW)
UTR-BP090X 28.0 or less
UTR-BP180X 28.1 to 56.0
UTR-BP567X 56.1 or more

Header2. 6.

A header is used for connecting the indoor units. Refer to the installation instruction sheet for the header for installa­tion specifi cations.

C Selection of headerTable.

Header

Total cooling capacity of

indoor unit (kW)

3-6 Branches 3-8 Branches

UTR-H0906L UTR-H0908L 28.0 or less
UTR-H1806L UTR-H1808L 28.1 to 56.0

En-6

INSTALLATION WORK3.

Please obtain the approval of the customer when selecting the location of installation and installing the main unit.

Selecting an installation location3. 1.

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)

<
=

Refrigerant concentration (kg/m3)

Capacity of smallest room where unit is installed (m

3

)

(0.3kg/m

3

)

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 airfl 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 appropri-•
ate 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. Oth-•
erwise, 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 fl 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.•

Drain processing3. 2.

The drain water is discharged from the bottom of the equipment. Construct a drain ditch around the base and dis-•
charge the drain water properly.
When installing on a roof, perform fl oor waterproofi ng properly.•

Drain processing:

The drain water from the base of the outdoor unit may gener-•
ate 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
fi gure.
Provide a central drain pan, as necessary.•

Outdoor unit

10 mm or
more

50 mm
or more

En-7

Installation dimensions3. 3.

CAUTION

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

Provide suffi cient installation space, such as transportation route, maintenance space, ventilation space, refriger-•
ant piping space, and passageways.

Pay attention to the specifi cations of the installation space as shown in the fi gure. If the unit is not installed ac-•
cording to specifi 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 fl 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 500mm or more as maintenance space.•
When there is a wall at the left side of the unit, provide a space of 30mm 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 and the outdoor unit is operating at a load exceeding its rated ability, provide a larger inlet space.

If you are installing more outdoor units than indicated here, please ensure suffi cient space or consult your distrib-•
uting agent as it may affect the performance due to short circuit and other problems.

When install near by limited height wall3. 3. 1.

Single and multiple installations(1)

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 fi 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

>
=

100 (mm)

When H2 is 500 (mm) or more L2

>
=

100+h2÷2 (mm)

1Fig.

J



.

.



J

*

*

<Side view>

<Front> <Rear>

Wall

Wall

2 Single installationFig.

.

.

30mm or more 10mm or more

<Top view>

<Front>

<Rear>

3 Multiple installationsFig.

.

.

<Top view>

30mm or
more

20mm or
more

10mm or
more

<Front>

<Rear>

20mm or
more

Concentrated installation(2)

Provide installation spaces L3, L4, and L5 in accordance with the table below according to the wall height (front •
side, rear side) conditions.
Provide installation spaces other than L3, L4, and L5 in accordance with the conditions shown in the fi 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 H3 is 1500 (mm) or less L3

>
=

500 (mm)

When H3 is 1500 (mm) or more L3

>
=

500+h3÷2 (mm)

When H4 is 500 (mm) or less L4

>
=

200 (mm)

When H4 is 500 (mm) or more L4

>
=

200+h4÷2 (mm)

When H5 is 500 (mm) or less L5

>
=

200 (mm)

When H5 is 500 (mm) or more L5

>
=

200+h5÷2 (mm)

En-8

4 Fig. 5 Fig.

6 Fig. 7 Fig.

When install near by unlimited height wall3. 3. 2.

Single and multiple installations(1)

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 L6 in accordance with the conditions shown in the fi gure below.•
Ventilation resistance can be ignorable when the distance from a wall or product, etc. is larger than 2m.•

When installing with the REAR of the outdoor unit facing the wall side

Condition Necessary installation space

When B

>
=

400 (mm) L6

>
=

200 (mm)

When 20

<
=

B < 400 (mm) L6

>
=

200 + (400-B) ×3 (mm)

8 Single installationFig.

<Top view>

<Front>

<Rear>

200mm
or more

100mm
or more

9 Multiple installationsFig.

<Top view>

<Front>

<Rear>

200mm
or more

B

L6

B

200mm
or more

200mm 200mm

800mm
or more

When installing with the FRONT of the outdoor unit facing the wall side

10 Fig.

<Top view>

500mm
or more

200mm or more

Wall

Wall

11 Fig.

<Top view>

<Front>

<Rear>

500mm
or more

200mm
or more

20mm or
more

20mm or
more

Wall

Wall

Fig.

J



.

.



J

*

*

.

.



J



J

*

*

Example :
When B is made 200mm
L6

>
=

200+(400-200)×3=800mm

<Side view>

<Front>

<Rear>

Wall

Wall

<Front view>

Wall Wall

<Top view>

800mm
or more

800mm
or more

20mm or
more

20mm or
more

L4

L3

L5L5

<Top view>

500mm
or more

1000mm
or more

20mm or
more

20mm or
more

L4

L3

L5

L5

En-9

Concentrated Installation(2)

The wall (without height restrictions) must not exist on the both sides (left / right) of outdoor unit. Also, must not ex-•
ist on the both sides (front / rear) of outdoor unit.
Ventilation resistance can be ignorable when the distance from a wall or product, etc. is larger than 2m.•

12 Fig. 13Fig.

When there are obstacles above the product3. 3. 3.

When there are obstacles above the product, keep the minimum installation height
as shown in the fi gure and install the outlet duct.
When installing the outlet duct, you must set the high static pressure mode with the
push-button switch.
(Similar when installing anti-snow hood)

Setting high static pressure mode

Follow the instructions in the table below to set the high static pressure mode.

Condition High static pressure mode setting

*2

Static Pressure(SP) *1 : 0 ≤ SP ≤ 30 (Pa)

Set to Mode 1

Static Pressure(SP)

*1

: 30 < SP ≤ 80 (Pa) Set to Mode 2

Static pressure is the air fl ow resistance that includes the discharge duct resistance & the other *1.
additional resistance like discharge grill and so on.
Refer to the section on Push Switch Setting in “Chapter 7 Field Setting”.*2.

Transportation the outdoor unit3. 4.

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 fi gure.
Use 2 ropes at least 8m long. If used shorter length, it may cause to damage the unit.•
Use the suffi ciently strong rope to bear the unit’s weight.•
Place the protective board or fi 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.•

500mm
or more

Outlet duct

<Top view>

1000mm
or more

400mm
or more

400mm
or more

400mm
or more

800mm
or more

800mm
or more

<Top view>

1000mm
or more

400mm
or more

400mm
or more

400mm
or more

500mm
or more

1000mm
or more

En-10

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.

AFig. Fig. B

Installation the unit3. 5.

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 the •
dimensions of A in the Table A.
(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 fi rm platform (such as concrete block).
(Fig. B)
The foundation base should be able to support the product and the foot •
width of the product should be more than 46.5mm.
Depending on the installation condition, vibration during the operation •
of the unit may cause noise and vibration.
Install vibration-proofi ng materials (such as rubber pads).
Consider the removal space of the connection piping when installing •
the foundation.
Secure the equipment fi rmly with anchor bolts, washers, and nuts.•

AFig.

732

765

160

160

8-12×17 (hole)Bottom view

(Unit:mm)

ATabl e.

Model name A B

AJ□A72LALH 610 930

AJ

□

A90LALH 610 930

AJ

□

108LALH 610 930

AJ

□

126LALH 920 1240

AJ

□

144LALH 920 1240

BFig.

Bolt(M10)

*Do not use a four-corner support foundation.

OKNO GOOD OK

CFig.

More than
200mm

When installing piping from the bottom of the outdoor units,
the required space under the outdoor unit

>
=

200mm.

*Install the branch kit horizontally.

Product mass (kg)

AJ□A72LALH 220

AJ□A90LALH 220

AJ□108LALH 275

AJ□126LALH 303

AJ□144LALH 303

Opening space

Protective boards

Fork (Forklift)

Delivery pallet

Fork (Forklift) or
Fork (Manual forklift)

<Front>

<Side>

En-11

SYSTEM CONFIGURATION4.

System confi guration4. 1.

CAUTION

When connecting multiple outdoor units, set the nearest outdoor unit to the indoor unit on the refrigerant pipe as the master unit.•
When connecting multiple outdoor units, install the outdoor unit with the largest nominal system capacity nearest •
to the indoor unit and on the refrigerant pipe, followed by those with less nominal system capacities.
Always keep to the limit on the total amount of refrigerant. Exceeding the limit on the total amount of refrigerant •
when charging will lead to malfunction.

In case of 1 outdoor unit connected A)

From outdoor unit to the farthest indoor unit:•

a+f

<
=

150m, a+p

<
=

150m (actual pipe length)

From the fi rst separation tube to the farthest indoor unit:•

f

<
=

60m, p

<
=

60m (actual pipe length)

Difference in height between outdoor units and indoor units (H1)•

50m: For the indoor unit stated below
40m: For the outdoor unit stated below

Difference in height between indoor units and indoor units•

H2

<
=

15m, H3

<
=

15m

Total pipe length•

a+f+h+j+l+n+p+q+s+u

<
=

700m

Total refrigerant amount•

<
=

31.5kg

In case of 2 outdoor unit connected B)

From outdoor unit to the farthest indoor unit:•

a+e+f

<
=

150m, a+e+p

<
=

150m (actual pipe length)

Difference in height between outdoor units and indoor units (H1)•

50m: For the indoor unit stated below
40m: For the outdoor unit stated below

From the fi rst separation tube to the farthest indoor unit•

f

<
=

60m, p

<
=

60m (actual pipe length)

Difference in height between indoor units and indoor units (H2, H3)•

H2

<
=

15m, H3

<
=

15m

Difference in height between outdoor unit and outdoor units (H4)•

H4

<
=

0.5m

From outdoor unit to outdoor unit branch kit•

a

<
=

3m, b

<
=

3m

Total pipe length•

a+b+e+f+h+j+l+n+p+q+s+u

<
=

1000m

Total refrigerant amount•

<
=

63kg

Outdoor unit capacity•

Master

>
=

slave

In the case of 3 outdoor units connected C)

From outdoor unit to the farthest indoor unit:•

a+e+f

<
=

150m, a+e+p

<
=

150m (actual pipe length)

From the fi rst separation tube to the farthest indoor unit:•

f

<
=

60m, p

<
=

60m (actual pipe length)

Difference in height between outdoor units and indoor units (H1)•

50m: For the indoor unit stated below
40m: For the outdoor unit stated below

Difference in height between indoor units and indoor units (H2,H3)•

H2

<
=

15m, H3

<
=

15m

Difference in height between outdoor unit and outdoor units (H4)•

H4

<
=

0.5m

From outdoor unit to outdoor unit branch kit•

a

<
=

3m, b

<
=

3m, c

<
=

3m

Between the farthest outdoor unit to the fi rst outdoor unit branch kit•

b+d

<
=

12m, c+d

<
=

12m

Total pipe length•

a+b+c+d+e+f+h+j+l+n+p+q+s+u

<
=

1000m

Total refrigerant amount •

<
=

94.5kg

Outdoor unit capacity•

Master

>
=

slave 1

>
=

slave 2

• If the outdoor temperature during cooling operation is NOTE)
expected to be –5 °C or less, do not install the outdoor unit
lower than the indoor unit.

・

Please refer to “8.3.2. Checking total amount of refriger­ant and calculating the amount of refrigerant charge to be
added” for the total amount of refrigerant.

A Fig.

Outdoor

unit

(Master)

Indoor

unit

f

h

p

q

j

s

l

u

H3

n

H1

H2

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

a

B Fig.

Outdoor

unit 1

(Master)

Outdoor

unit 2

(Slave)

f

e

a

H4

h

p

q

j

s

l

u

H3

n

H1

H2

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

b

C Fig.

Outdoor

unit 3

(Slave 2)

Outdoor

unit 2

(Slave 1)

Outdoor

unit 1

(Master)

f

e

c

ba

H4

d

h

p

q

j

s

l

u

n

H1

H2

H3

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

En-12

Pipe selection4. 2.

CAUTION

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

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

Do not use existing pipes.•

Improper pipe selection will degrade performance.•

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

Outside Diameter mm 6.35 9.52 12.70 15.88 19.05 22.22 28.58 34.92 41.27

Wall Thickness

*3

mm 0.8 0.8 0.8 1.0 1.2 1.0 1.0 1.2 1.43

Material

COPPER

*1

JIS H3300 C1220T-O or equivalent

COPPER

*2

JIS H 3300 C1220T-H or equivalent

Please select the pipe size in accordance with local rules.

B (Between outdoor unit to outdoor unit branch kit)Tabl e.

HP

Outdoor unit cooling

capacity (kW)

Outside diameter (mm)

Branch kit

*4

Liquid pipe Gas pipe

8

22.4 12.70 22.22

UTR-

CP567X

10

28.0 12.70 22.22

12

33.5 12.70 28.58

14

40.0 12.70 28.58

16

45.0 12.70 28.58

Allowable tensile stress*1.

>
=

33 (N/mm2)

Allowable tensile stress*2.

>
=

61 (N/mm2)
Endurance pressure of the pipes 4.2MPa*3.
For the installation method, refer to “5.4. Multiple *4.
connections”.

C (Between outdoor unit branch kits or outdoor unit Tabl e.

branch kit to fi rst separation tube)

Tot a l coo ling c apac ity

of outdoor unit (kW)

Outside diameter (mm)

Liquid pipe Gas pipe

22.4 to 28.0 12.70 22.22

28.1 to 45.0 12.70 28.58

45.1 to 56.0 15.88 28.58

56.1 to 80.0 15.88 34.92

80.1 to 96.0 19.05 34.92

96.1 or more 19.05 41.27

If the pipe diameter between separation
tubes (based on Table D) is larger than the

pipe diameter between outdoor unit branch
kit and the fi rst separation tube (based on
Table C), select the pipe whose diameter is
equal to the one between the outdoor unit
branch kit and the fi rst separation tube.
(If pipe diameter D > C, select pipe size from
table C)

Use a standard separation tube for pipe
branching. Do not use a T tube as it does

not separate the refrigerant evenly.

D (Between separation tubes)Tabl e.

Tot a l coo ling

capacity of

indoor unit (kW)

Outside diameter (mm)

Liquid pipe Gas pipe

4.4 to 11.1 9.52 15.88

11.2 to 13.9 9.52 19.05

14.0 to 28.0 12.70 22.22

28.1 to 44.7 12.70 28.58

44.8 to 56.0 15.88 28.58

56.1 to 80.0 15.88 34.92

80.1 to 95.0 19.05 34.92

95.1 or more 19.05 41.27

E (Between separation tube to indoor unit)Tab le.

Cooling capacity of

indoor unit (kW)

Outside diameter (mm)

Liquid pipe Gas pipe

2.2, 2.8, 3.6, 4.0, 4.5 6.35 12.70

5.6, 7.1, 8.0, 9.0

9.52

15.88

11.2, 12.5, 14.0, 18.0 19.05

22.4, 25.0 12.70 22.22

F (Separation tube / Header)Table .

Tot a l coo ling c apac ity

of indoor unit (kW)

Separation tube *5

Header *5

3-6 Branches 3-8 Branches

28.0 or less UTR-BP090X UTR-H0906L UTR-H0908L

28.1 to 56.0 UTR-BP180X UTR-H1806L UTR-H1808L

56.1 or more UTR-BP567X — —

For the installation method, refer to the installation *5.
manuals for indoor unit piping connection, separa­tion tubes, and header.

Master

unit

Slave
unit1

First separation
tube (optional)

Outdoor unit
branch
kit (optional)

Separation tube
(optional)

Pipe size
(table B)

Pipe size
(table C)

Pipe size
(table D)

Pipe size
(table E)

Slave

unit2

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

En-13

Protection of pipes4. 3.

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

Protect the pipes to prevent the entry of mois-•
ture and dust.
Especially pay attention when passing the pipes •
through a hole or connecting the end of a pipe
to the outdoor unit.

PIPE INSTALLATION5.

Brazing5. 1.

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.

Fig.

Apply nitrogen gas while brazing the pipes.•
Nitrogen gas pressure: 0.02 MPa (= pressure felt suffi ciently on the
back of your hand)

If a pipe is brazed without applying nitrogen gas, it will create an oxidation fi lm.•
This can degrade performance or damage the parts in the unit (such as the compressor or valves).

Do not use fl ux to braze pipes. If the fl ux is the chlorine type, it will cause the pipes to corrode.•
In addition, if the fl ux contains fl uoride, it will affect the refrigerant piping system due to deterioration of refrigerant oil.

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

Indoor unit pipe connections5. 2.

CAUTION

Separation tube

A : Outdoor unit or Refrigerant branch kit
B : Indoor unit or Refrigerant branch kit

Header

A

B

AB

A

B

H1= 0 mm –

10 mm

(A

1 : 0o – 1o)

B

1: -10o – 10o

H

2

= 0 mm –

10 mm

(A

2 : 0o – 1o)

B

2

: -10o – 10o

C

H

1

A

1

B

1

D

H

2

A2

B2

Pressure regulating valve

Brazing area

Nitrogen gas

Cap

OK

NO GOOD NO GOOD

Horizontal
line

Horizontal
line

VIEW D

VIEW C

Horizontal
line

Horizontal
line

Gas pipe

Liquid pipe

Outdoor
unit side

Outdoor
unit side

OK

Horizontal

Vertica l

Horizontal line

or

NO GOOD

±15°C

En-14

CAUTION

Do not connect a separation tube after a header.•
Leave the distance 0.5 m or more for straight part to branch tube and header.•

For details, refer to the Installation Instruction Sheet of each part.•

Piping method5. 3.

Opening the knockout hole5. 3. 1.

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 2 directions; the front or the bottom.
(Knockout holes are provided so that the piping can be connected from 2 different directions.)
Use the front knockout hole, as required.

A Knockout positionFig. B Detail of knockout po-Fig.

sition (bottom)

Knockout hole

(Unit: mm)

C Detail of knockout position Fig.

(front)

Knockout
hole

(Unit: mm)

Main pipe

0.5m or more

0.5m or more

0.5m or more

To in d o o r u n i t

To in d o o r u n i t

To in d o o r u n i t

To in d o o r u n i t

Main pipe

0.5m or more
To in d o o r

unit

Separation tube

or

Header

or

Header

Separation tube

To in d o o r
unit

En-15

Removing the pinch pipe5. 3. 2.

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 fi ller metal of the junction area with a burner.

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

Verify that the liquid side and gas side 3-way valves are closed. (Fig. A) 1)
Cut the end of the liquid side and gas side pinch pipe and vent the gas inside the pinch pipe. (Fig. B) 2)
After all the gas is vented, melt the brazing fi lter metal on connecting part using a burner and remove the 3)
pinch pipe. (Fig. C)

AFig.

3-way valve

Pinch pipe

BFig.

End of pinch pipe

CFig.

Pipe connection5. 3. 3.

CAUTION

Seal the pipe route hole with putty (fi 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 70mm or greater.

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

Do not use fl 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.

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.

AFig.

Liquid pipe
(Field supply)

Joint pipe
(accessory)

To in d o o r u n i t

Knockout
hole

Gas pipe
(Field supply)

Joint pipe
(Field supply)

BFig.

Joint pipe
(Field supply)

Joint pipe
(accessory)

Knockout
hole

En-16

Multiple connections5. 4.

CAUTION

When connecting multiple (maximum 3) units, be sure to install the unit with the largest capacity nearest to the •
indoor unit.

For example) AJ 126LALH (Outdoor Unit1) + AJ 126LALH (Outdoor Unit2) + AJ

A90LALH (Outdoor Unit3)

When connecting multiple units, set the unit with the largest capacity as the master unit, and the rest as the slave units.•
(Refer to 7. Field Setting)
When connecting multiple units, use the optional outdoor unit branch kit.•

Outdoor unit 1

(Master unit)

To in d o o r u n i t

Outdoor unit 2

(Slave unit 1)

Outdoor unit 3

(Slave unit 2)

To in d o o r u n i t
(To main pipe)

Outdoor unit
branch kit
(Optional)

Liquid pipe
(Field supply)

Gas pipe (Field supply)

Joint pipe
(Accessory)

To o u t d o o r u n it

To o u t d o o r u n it

Restriction when install

Be sure following restriction.

Installation angle 1)

Outdoor unit branch kit

A

B

C

A

C

B

0 to -10

0 to -10

Horizontal Vertical

To in d o o r u n i t

To o u t d o o r u n it

To out do o r u nit
or next branch kit

No

good

No

good

No

good

No

good

OK

No good No good No good

OK

Install the outdoor unit branch kit horizontally, within 0° to -10°, so that the refrigerant separates evenly.•
Do not install the outdoor unit branch kit vertically.•

Straight pipe length 2)

To in do o r u n it
(To main pipe)

To indoor unit (To main pipe)

To out do o r u nit

To out do o r u nit

To out do o r u nit

To out do o r u nit

To out do o r
unit

0.5m or more

0.5m or more

Leave the distance 0.5m or more for straight part to outdoor unit branch kit.•

For details, refer to the Installation Instruction Sheet of the outdoor unit branch kit. 3)

Outdoor Capacity
2 Unit : Unit1

>
=

Unit2

3 Unit : Unit1

>
=

Unit2

>
=

Unit3

En-17

Examples of multiple unit installationFig.

(Example 1)

Master unit Slave unit1 Slave unit2

(Example 3)

Master
unit

Slave
unit1

Slave
unit2

(Example 2)

Master unit Slave unit1 Slave unit2

CAUTION

To prevent the oil from settling in the stopped unit, install the pipes between the outdoor units so that they are level
or are tilted upward to the outdoor units.

Examples of multiple unit installation are shown below.(1)
Installable patterns a)

GOOD

GOOD

GOOD

Master

unit

Slave
unit 1

Slave
unit 2

Master

unit

Slave
unit 1

Slave
unit 2

Master
unit

Slave
unit 1

Slave
unit 2

To indoor unit

To indoor unit

To indoor unit

Non-installable patterns b)

NO GOOD

Master

unit

Slave
unit 1

Slave
unit 2

To indoor unit

NO GOOD

Master

unit

Slave

unit 1

Slave

unit 2

To indoor unit

NO GOOD

Master

unit

Slave
unit 1

Slave
unit 2

To indoor unit

When the length between branch kits and the length of the branch kit and outdoor units is more than 2m, (2)
provide a rise of 200mm or more on the gas pipe. However, there is no need to provide a rise on the pipe
connecting to the master unit even if the length exceeds 2m.
In case of less than 2m a)

Master

unit

Slave
unit 1

Slave
unit 2

To indoor unit

Gas
pipe

Outdoor unit branch kit

Less than 2 m

In case of 2m or more b)

Master

unit

Slave

unit1

Slave

unit2

To indoor unit

Gas pipe

2 m or less

Outdoor unit
branch kit

Rise
200 mm or more

2 m or more

En-18

ELECTRICAL WIRING6.

The precautions of electrical wiring6. 1.

WARNING

Wiring connections must be performed by a qualifi ed person in accordance with specifi 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 fi 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 fi re.

Do not modify power cable, use extension cable or branch wiring. Improper use may cause electric shock or fi re •
by poor connection, insuffi cient insulation or over current.

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.•

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.•

Never bundle the power supply cable and transmission cable, remote control cable together. Separate these •
cable by 50 mm or more. Bundling these cables together will cause miss operation or breakdown.

Always keep to the maximum length of the transmission cable. Exceeding the maximum length may lead to er-•
roneous operation.

The static electricity that is charged to the human body can damage the control PC Board when handling the •
control PC Board for address 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.

En-19

Knockout hole6. 2.

CAUTION

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

After opening the knockout hole, remove the burr on the edges to prevent snapping of wires.•
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 2 different directions.)
Use the knockout holes on the front and the left separately when necessary.

(Unit: mm)

Knockout hole

Knockout hole

(Unit: mm)

En-20

Selecting power supply cable and breaker6. 3.

CAUTION

Obtain the distribution network operator's agreement about the power capacity of the power supply system, •
specifi cation of the cable and the harmonic current, and etc. when you connect the outdoor unit with the power
supply.

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 specifi cations of each installation condition.

Selecting power supply cable and breaker when connecting 1 outdoor unit(1)

MODEL

Breaker (Time delay fuse or circuit capacity) Outdoor unit power supply cable

Capacity (A)

Leakage

current

Power supply

cable (mm

2

)

Ground wire (mm2)

Critical wiring

length (m)

AJ

A72LALH 30

100mA

0.1sec or less

4430

AJ

A90LALH 30 4 4 30

AJ

108LALH 50 10 6 42

AJ

126LALH 50 10 6 42

AJ

144LALH 50 10 6 42

These values are recommended data. 1)
Specifi cation: Use conformed cord with Type 60245 IEC66 2)
Max. wire length: Set a length so that the voltage drop is less than 2%. 3) Increase the wire diameter when the wire length is long.

In case of connected outdoor unit (breaker: earth leakage breaker)Fig.

Selecting main breaker and main pow(2) er supply cable when connecting multiple outdoor units

Main breaker: Main breaker

>
=

Total Sub breaker (

Refer to the table in item (1) for the sub breaker capacity)

In case of connected 3 outdoor unit (breaker: earth leakage breaker)Fig.

OK

Transmission cable

230 V 1ø 50 Hz

Sub
breaker

Outdoor unit Power supply cable

Remote controller cable

400 V 3ø
50 Hz

Breaker

Indoor unit
Power supply cable

Main breaker

Example of bad breaker wiring(3)

No Good

Transmission cable

230 V 1ø 50 Hz

400 V 3ø 50 Hz

Breaker

Indoor unit
Power supply cable

Remote controller cable

Outdoor unit
Power supply cable
No Good: crossover power

supply wiring prohibited

Breaker
No Good: install a breaker
for each outdoor unit

OK

Transmission cable

Remote controller cable

Breaker

400 V 3ø 50 Hz

Breaker

230 V 1ø 50 Hz

Outdoor unit
Power supply cable

Indoor unit
Power supply cable

En-21

Transmission line6. 4.

CAUTION

Caution when wiring cable•
When stripping off the coating of lead wire, always use
the exclusive tool such as a wire stripper. If there is no
exclusive tool available necessarily, carefully strip the
coating by a cutter etc. so that the conductive wire is
not damaged.
If it is damaged, it may lead to an open circuit and a
communication error.

Pay attention to the following points while attaching •
wires on the terminal board.
Do not attach 2 wires on one side.
Do not twist wires.
Do not cross the wires.
Do not shorted at edge at root.

NO GOOD

OK

NO GOOD

NO GOOD NO GOOD

OK

2pcs at one side

Shorted at edge

Wires twisted

Shorted at root

1 wire

2 wires

Transmission wiring specifi cations6. 4. 1.

Follow the specifi cations below for the transmission cable.

Use Size Wire type Remarks

Transmission cable 0.33mm

2

22AWG LEVEL 4 (NEMA) non-polar 2core,

twisted pair solid core diameter 0.65mm

LONWORKS®

compatible cable

Wiring rules6. 4. 2.

(1)Total length of transmission cable

Total transmission line length : MAX 3600m

EF+EG+GH+HJ+HK+KL < 3600m (Fig.2) 

In the following cases , Signal Amplifi er is required.

①

When the total length of the transmission line

exceeded 500m.

AB+BC+BD > 500m (Fig.1)

②

When the total number of units* is over 64.

③

Transmission line length between each unit*≧ 400m
(2)Length of transmission cable between 1 network seg­ment (NS)

EF+EG+GH+HJ+HK ≦ 500m (Fig.2)

KL ≦ 400m (Fig.2)
(3)Length of transmission cable between outdoor units in a
refrigerant system

MN ≦ 18m

NP ≦ 18m

Unit* means indoor unit, outdoor unit, Touch Panel NOTE)
Controller and System Controller, Signal Amplifi er,
single split adaptor, Network Convertor etc..

Do not use loop wiring. This may lead to parts damage
and erroneous operation.

1Fig.

Transmission line

Outdoor unit

Indoor unit

System

Controller

Touch Panel

Controller

Terminal
resistor

When AB+BC+BD>500m:
Signal Amplifi er is required.

A

B

C

D

2Fig.

Outdoor unit

Indoor unit

Signal Amplifi er

System
Controller

Touch Panel
Controller

Transmission line

Terminal resistor

Terminal resistor

NS 1

NS 2

F

H

L

G

K

J

E

P

M

N

En-22

Enabling/Disabling automatic address setting6. 4. 3.

You can enable/disable automatic address setting for the indoor unit and the signal amplifi er.
To enable automatic address setting for the indoor unit, connect the indoor unit to outdoor units under the same refrig­erant system.(Fig.4)

Example : Disable Automatic Address setting

Refrigerant
system 1

Refrigerant
system 2

Refrigerant
system 3

Transmission line

Transmission line

Transmission line

Example : Enable Automatic Address setting

Refrigerant
system 1

Refrigerant
system 2

Refrigerant
system 3

Transmission line

Transmission line

Transmission line

Wiring method6. 5.

The wiring example for outdoor and indoor units is shown in fi gure.
Remove the cover of the electrical component box and follow the terminal plate to connect the electric wires to the
terminal.
After connecting the electric wires, secure them with a cable clamp.
Connect the wires without applying excessive tension.

.

. .

.

. .

0

0

.

..0

.

. . 0

.

.

. 0

.

. . 0

To other refrigerant circuit Outdoor unit

Power supply Power supplyPower supply

Outdoor unit1
(Master unit)

Outdoor unit2
(Slave unit 1)

Outdoor unit3
(Slave unit 2)

Breaker

Indoor unit Indoor unit Indoor unit

Power supply Remote control

Transmission

Transmission

Transmission

Remote
control unit

Transmission

Transmission

Power supply Power supply Power supply

Power supply

Power supply

Remote controlRemote control

Transmission

Breaker Breaker

BreakerBreakerBreaker

Remote
control unit

Remote
control unit

(Breaker: earth leakage breaker)

*1:

The number of power supply terminals
is different depending on the indoor unit
model. For the wiring, refer to the indoor
unit installation manual.

*2:

Ground the remote controller if it has a
ground wire.

*1

*1

*2 *2 *2

*1

En-23

Secure with a cable clamp as shown in the fi gure below.

Tightening torque

M3 screw 0.5 to 0.6 N·m (5 to 6 kgf·cm)

M8 screw 5.0 to 7.0 N·m (50 to 70 kgf·cm)

Use a ring terminal to connect the electric wires to the power supply terminal board.*

Sealing transmission cable

Connect both ends of the sealed wires of the transmission cable to the earth terminal of the equipment or to the earth
screw near the terminal.
Be very careful that the screws are not overly tightened as the wires may snap and the terminal may be damaged.

Be sure to use one side of a twisted-pair cable when using transmission cable with 2 sets of twisted-pair cables.

Power supply cord

Transmission cable

Cable clip

Cable clip

Binder

Binder

Power terminal board

Ring terminal: M8

8~10 mm

70~

80 mm

90~

100 mm

40 mm or more

Wind with insulation tape to prevent
short circuit

Use one side of the
twisted-pair cable

Connect both ends of sealed
cable to earth.

En-24

External input and external output6. 6.

Terminal position6. 6. 1.

Base heater
Terminal(CN115)

Output 1
Terminal(CN136)

Output 2
Terminal(CN137)

Input 4
Terminal(CN134)

Input 3
Terminal(CN133)

Input 2
Terminal(CN132)

Input 1
Terminal(CN131)

Input 5
Terminal(CN135)

CN137 (BLUE)CN136

(BLACK)

CN115
(BLACK)

CN132 (GREEN)CN131 (YELLOW)

CN135

(ORANGE)

CN133 CN134 (RED)

EXT. IN. 4EXT. IN. 3EXT. IN. 2

EXT. OUT. 2EXT. OUT. 1

BASE HEATER

EXT. IN. 1

PULSE. IN

CN137 (BLUE)CN136

(BLACK)

CN115
(BLACK)

CN132 (GREEN)CN131 (YELLOW)

CN135

(ORANGE)

CN133 CN134 (RED)

EXT. IN. 4EXT. IN. 3EXT. IN. 2

EXT. OUT. 2EXT. OUT. 1

BASE HEATER

EXT. IN. 1

PULSE. IN

CAUTION

Do not bind this wire with other wires.•

(Example)
In case of Outdoor unit

Insert the connector to CN136 (Black) and (1)
CN137 (Blue) of control PC board.
Fix it to the wire with the attached binder.(2)

Clamp

CN137
(Blue)

CN115
(Black)

Binder (Acces­sories)

Wire

▪ Do not clamp the base heater cable.

Clamp

CN136
(Black)

Outdoor unit printed circuit board

En-25

External input terminal6. 6. 2.

Service parts : EXTERNAL INPUT WIRE A (9368777005)

Setting to low noise mode, cooling priority/heating priority selection, outdoor unit operation peak control setting, •
emergency/batch stop and electricity meter pulse are possible from the outside.
Except for wattmeter pulse reception (CN135) among external input terminals, only the Master unit is effective. •

Wiring method and specifi cations

A twisted pair cable (0.33mm*

2

(22AWG)) should be used. Maximum length of cable is 150m.
Use an external input and output cable with appropriate external dimension, depending on the number of cables to *
be installed
For each input, pin No.1 is of positive polarity and pin No.2 is of ground level.*

Connected unit

Connected unit Connected unit

Connected unit

Connected unit

CN131
(Yellow)

CN132
(Green)

CN133
(White)

CN134
(Red)

CN135
(Orange)

P. C . B

Input1

Input2

Input3

Input4

Input5

Operation behavior

Each input terminal works as follows.

Connector Input signal Status

Outdoor unit

Master Slave

CN131 (Yellow)

OFF Normal operation

O

°

ON Low noise mode operation

CN132 (Green)

*1

OFF Cooling priority

O

°

ON Heating priority

CN133 (White)

OFF Normal operation

O

°

ON Outdoor unit operation peak control

CN134 (Red)

OFF Normal operation

O

°

ON Batch stop or Emergency stop operation *2, *3

CN135 (Orange)

*4

No pulse No information from electricity meter

OO

Pulse Power usage information from electricity meter

Slave unit can connect only input5 (CN135).

The operations of each input terminal and the selection of function are set with the push switch on the circuit board of
outdoor unit. About the setting, please refer to 7.4. Push switch setting.

Note :
*1: The "external input priority mode" must be set by pressing push button on PC board of outdoor unit.
*2: Batch stop or Emergency stop pattern can be selected by outdoor unit PC board push button.

*3: The emergency stop function mounted in the V-II does not guarantee the regulations of each country. For this

reason, suffi cient checking is necessary regarding use.
Especially, since the fact that the equipment may not be emergency-stopped in the case of breaking of the
wiring to the external input terminals and communication line, communication error due to noise, VRF external
input circuit trouble, etc. must be considered, the provision of double measures that add direct interruption of
the power supply by switch, etc. is recommended as a precaution.

*4: Pulse input to CN135 must be width 50ms or more, and must be interval 50ms or more.

En-26

External output terminal6. 6. 3.

Service parts : EXTERNAL INPUT WIRE A (9368777005)

You can detect the operation condition of outdoor unit and the abnormal situation of both indoor and outdoor unit.•
The external output terminal is only valid for Master Unit.•

Wiring method and specifi cations

Error display (Master unit only)

This output indicates the outdoor unit and connected indoor unit's "Normal" or "Error" status.

Operation display (Master unit only)

This output indicates the outdoor unit's "Operation" status.

Connector Output voltage Status

CN136 (Black)

0V Normal

DC 12-24 V *5 Error

CN137 (Blue)

0V Stop

DC 12-24 V *5 Operation

1

2

+

+-

*5

*6

*7

P. C . B

CN136
(Black)
or CN137
(Blue)

DC power supply
(External) 12 - 24V

Connected load
(Operation In­dicator or Error
Indicator)

Connected unit

*5: Provide a DC12 to 24V power supply.

Select a power supply capacity with an ample
surplus for the connected load.

*6: The allowable current is 30mA or less.

Provide a load resistance such that the current
becomes 30mA or less.

*7: Polarity is [+] for pin 1 and [-] for pin 2. Connect

correctly.
Do not impress a voltage exceeding 24V across pins
1-2.

A twisted pair cable (0.33mm*

2

(AWG22)) should be used. Maximum length of cable is 150m.
Use an external input and output cable with appropriate external dimension, depending on the number of cables to *
be installed.

Base heater terminal6. 6. 4.

Service parts : WIRE WITH CONNECTOR (9708642000)
This is the output signal for base heater. Output signal ON, when the outdoor temperature goes down below 2°C, and
signal OFF at the outdoor temperature 4°C.

1

2

3

4

8: Connect to pin 1 and pin 3. No connection pin2 and pin4.*
9: The allowable current is 1A or less.*

P. C . B

CN115
(Black)
*8

AC240V
(For rated 415V power supply)

Cable

(0.82mm

2

(18AWG))

Base heater
*9

En-27

FIELD SETTING7.

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.

Field setting switches7. 1.

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 fi gure.

DIP switch setting7. 2.

List of Settings7. 2. 1.

SET3 and SET5 must be set for the DIP switch.
Confi gure the settings before turning on the power.
Settings for SET1, SET2, and SET4 DIP switches are
factory default ones. Do not change them.

DIP Switch Function

SET1 1-4 Forbidden

SET2 1-4 Forbidden

SET3

1

Outdoor unit

address setting

2

3

Setting for number of

slave units

4

SET4 1-4 Forbidden

SET5

1-2

Number of outdoor units in-

stalled

3 Forbidden

4 Terminal resistor setting

X 10 X 1

5'6

7 Segment
LED display

Push button

LED lamp

POWER

LED105

LED104

REF AD

SET 1

SW101

SET 2

SW102

SET 3

SW103

SET 4

SW104

ERROR

MODE

LED101

(GREEN)

MODE

/EXIT

SELECT

ENTER

SW106

SW107

SW108

SW109

SW105

LED102

(RED)

Rotary switch

Outdoor unit printed circuit board

DIP switch

Settings to be confi gured locally7. 2. 2.

Outdoor unit address setting(1)

When 2 or 3 outdoor units are installed to 1 refrigerant system, set
the address for each outdoor unit.
Set the address for all outdoor units.

SET3

Outdoor unit

address

Remarks

12

OFF OFF 0 Master unit only (Factory setting)

OFF ON 1 Slave unit 1

ON OFF 2 Slave unit 2

ON ON - Forbidden

Nu(2) mber of slave units setting for outdoor unit

Set the number of slave units connected to 1 refrigerant system.
Set only the master unit.

SET3 Number of

connectable

outdoor units

Remarks

34

OFF OFF 0 Master unit only (Factory setting)
OFF ON 1 1 slave unit connected

ON OFF 2 2 slave unit connected
ON ON - Forbidden

En-28

Number o(3) f outdoor units installed

The number of outdoor units installed in 1 refrigerant system must be set.
Set for all outdoor units.

SET5

Number of out-

door units

Remarks

12

OFF OFF 1 (Factory setting)

OFF ON 2 -

ON OFF 3 -

ON ON - Forbidden

Terminating resistor setting7. 2. 3.

Caution

Be sure to set the terminal resistor according to specifi cations.
Set the terminal resistor for every network segment (NS).

If terminal resistor is set in multiple devices, the overall communication system may be damaged.
If terminal resistor is not set in a device, abnormal communication may occur.

Be sure to• set 1 terminal resistor in a network segment. You can set the terminal resistor at the outdoor unit or
signal amplifi er.

When settin• g the terminal resistor of a signal amplifi er, refer to the installation manual of the signal amplifi er.

When settin• g multiple terminal resistors, take note of the following items.

How many network segments are there in a VRF system?

①

Where will you set the terminal resistors in a network segment? (Condition for 1 segment: Total number of

②

outdoor and indoor units and signal amplifi ers is less than 64, or the total length of the transmission cable is
less than 500m)
How many outdoor units are connected to 1 refrigerant system?

③

Confi gure the setting (DIP switch SET5) of the terminal resistor of the outdoor units as shown below from con-
ditions 1 to 3.

SET5

Terminal resistor Remarks

4

OFF Disable (Factory setting)

ON Enable -

Figure:Terminalresistorsetting

NS2 (Network segment 2) NS3 (Network segment 3)

NS4 (Network segment 4)

NS1 (Network segment 1)
(Set terminal resistor at outdoor units)

Master unit

Master unit

Master unit

Refrigerant system1

Refrigerant system2

Refrigerant system3

Terminal resistor: off

Terminal resistor: on

Terminal resister: on

About the setting of terminal resistor

Outdoor unit (Master unit)

Install

Do not install

:on

:off

Signal amplifi er

En-29

Rotary switch setting7. 3.

The rotary switch (REF AD) sets the refrigerant circuit address of the outdoor unit. Confi gure the settings only on the
master unit of a refrigerant system.
If multiple refrigerant systems are connected, set the rotary switch (REF AD) as shown in the table below.

Refrigerant

circuit

address

Rotary

Switch Setting

Setting

Setting

range

Typ e of sw itch

REF AD

×10 ×1

Refrigerant

circuit

address

0–99

Setting

example

63

000

101

202

303

REF AD × 10 REF AD × 1

404

Rotary Switch (REF AD×1): Factory setting "0"
Rotary Switch (REF AD×10): Factory setting "0"

505

・・・
・・・
・・・

97 9 7

98 9 8

99 9 9

Push button setting7. 4.

Various functions can be set. Set when necessary.
Perform settings after all indoor units have stopped operation.

Refer to Table A for the items that can be set.

A: List of SettingsTable .

No Setting Item

7 segment LED

display

Factory

default

Content

First 2

digits

Last 2

digits

0

Pipe length set­ting

Standard pipe (40 to 65m)

00

00 O

This item allows you to adjust the cooling cycle loss due to the length of the
connected pipe.
Set according to the length of the connected pipe.
Set only the master unit for this item.

*

Pipe length means the length between master outdoor unit and the nearest
indoor unit.

Short pipe (less than 40m) 0 1

Long pipe 1 (65 to 90m) 0 2

Long pipe 2 (90 to 120m) 0 3

Long pipe 3 (120 to 150m) 0 4

10

Compressor
sequential start
shift

No shift

10

00 O

This item allows you to delay the start timing of the outdoor units for every
refrigerant system when multiple refrigerant systems have been confi gured.

You can also limit the start current when multiple refrigerant systems are
activated at the same time.
Set only the master unit for this item.

Shift 1 (21 seconds) 0 1
Shift 2 (42 seconds) 0 2
Shift 3 (63 seconds) 0 3

11

Cooling capacity
shift

Standard

11

00 O

Set this item when necessary.

Save energy mode 0 1
High power mode 1 0 2
High power mode 2 0 3

12

Heating capacity
shift

Standard

12

00 O

Set this item when necessary.

Save energy mode 0 1
High power mode 1 0 2
High power mode 2 0 3

13 (Setting disabled) 1 3 0 0 (Factory default)

20

Emergency stop/
Forced stop
toggle

Forced stop

20

0 0 O This item allows you to stop the outdoor/indoor units of the same refrigerant

system when a stop signal is received at the external input terminal “CN134”.

• Forced stop: Operation can be resumed using a remote control.

• Emergency stop: Once emergency stop is cancelled, you can start opera­tion with a remote control.
Set only the master unit for this item.

Emergency stop 0 1

En-30

21

Priority mode
setting

First press priority

21

00 O

This item allows you to set the priority item in the cooling cycle operation mode.

•

First press priority: The operation mode that is confi gured fi rst will be given priority.

• Outdoor unit external input priority: The operation mode that is confi gured
through the external input terminal "CN132" will be given priority.

•

Administrative indoor unit priority: The operation mode of the “administrative
indoor unit” that is confi gured using a wired remote control will be given prior-
ity.
Set only the master unit for this item.

Outdoor unit external input
priority

01

Administrative indoor unit
priority

02

22

Snowfall mode
setting

Normal operation

22

00 O

This item allows you to operate the outdoor unit fan regularly in order to prevent
the device from being disabled when the outdoor unit is buried in snow.
Set only the master unit for this item.

Snowfall mode 0 1

23

Snowfall opera­tion interval set­ting

Standard (30 mins)

23

00 O

This item allows you to confi gure the interval of the outdoor unit fan opera-
tion when “Snowfall mode” is selected.
Set only the master unit for this item.

Short 1 (5 mins) 0 1
Short 2 (10 mins) 0 2
Short 3 (20 mins) 0 3

24

High static pres­sure mode setting

Standard

24

00 O

Set the high static pressure mode under the following conditions.
High static pressure mode 1:

When a duct is attached, the length of this duct is 150mm or less from the main
unit and other resistive materials are not at the air fl ow outlet (30Pa or less).

High static pressure mode 2:

When a duct is attached, the length of this duct is 150mm or more from the main
unit or there are other resistive materials at the air fl ow outlet (80Pa or less).
Refer to “3.3.3. When there are obstacles above the product” for setting
the high static pressure mode.
Set both the master and slave units for this item.

High static pressure mode 1 0 1
High static pressure mode 2 0 2

25 (Setting disabled) 2 5 0 0 O (Factory default)
26 (Setting disabled) 2 6 0 0 O (Factory default)
27 (Setting disabled) 2 7 0 0 O (Factory default)
28 (Setting disabled) 2 8 0 0 O (Factory default)
29 (Setting disabled) 2 9 0 0 O (Factory default)

30

Energy-saving
level

Level 1 (stop operation)

30

00 O

This item allows you to limit the nominal system capacity or stop the opera­tion when an “energy-saving peak cut” signal is received at the external
input terminal “CN133”.
Set only the master unit for this item.

Level 2 (Limited at 40%) 0 1
Level 3 (Limited at 60%) 0 2
Level 4 (Limited at 80%) 0 3
Level 5 (Limited at 100%) 0 4

40

Capacity priority
setting during low
noise operation

Low noise priority

40

00 O

”When “capacity priority” is selected, low noise operation mode will be canceled
temporarily if the cooling/heating capacity is insuffi cient during low noise operation.
(Once insuffi cient capacity is canceled, the unit will resume low noise opera-
tion mode)
Set only the master unit for this item.

Capacity priority 0 1

41

Low noise opera­tion setting

Normal operation 4 1 0 0 O

When “low noise operation ON” is selected, the operating noise will be sup­pressed.
Set only the master unit for this item.

Low noise operation 4 1 0 1

42

Low noise opera­tion level setting

Level 1 (55dB) 4 2 0 0 O

This item allows you to confi gure the noise level when the unit operates
under low noise operation mode.
Set only the master unit for this item.

Level 2 (50dB) 4 2 0 1

60

Backup operating
settings

Enable

60

00 O

Set whether to run the outdoor backup operation.

Disable 0 1

70

Electricity meter

No. settings 1

70

00 O

Set the digit positions for integers and tens for the electricity meter con-

nected to CN135.

Points to note on common No. 70 and 71

If the electricity meter No. is set to “0” or “201-299”, the pulse entered

into CN135 will be disabled.

11
22
33
44
55
66
77
88
99

71

Electricity meter

No. settings 2

71

00 O

Set the digit position for the hundreds for the electricity meter connected to
CN135.

01
02

72

Electricity meter

pulse setting 1

72

00 O

Set the digit positions for the integers and tens of the pulse settings of the

electricity meter connected to CN135.

Points to note on common No 72 and 73

If the electricity meter pulse is set to “0”, the pulse entered into CN135

will be disabled.

11
22
33
44
55
66
77
88
99

En-31

73

Electricity meter

pulse setting 2

73

00 O

Set the digit positions for the hundreds and thousands of the pulse settings
of the electricity meter connected to CN135.

11
22
33
44
55
66
77
88
99

90 (Setting disabled) 9 0 0 0 O (Factory default)

(1)

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

When system is normal•
POWER/MODE lamp lights up. (ERROR lamp is off.)

POWER/MODE lamp:
ON

ERROR lamp: OFF

SELECT button

ENTER button

MODE/EXIT button

POWER

LED105 LED104

ERROR

MODE

LED101
(GREEN)

MODE
/EXIT

SELECT ENTER

SW107

SW108 SW109

LED102
(RED)

7 segment LED display:
OFF

When system is abnormal•
Check the settings as there is an error in the settings for
outdoor unit address (DIP switch SET3-1, 2) or number

of connected slave units (DIP switch SET3-3, 4).

POWER/MODE lamp:
ON

7 segment LED display:
"-" display

ERROR lamp:
Blinking

POWER

LED105 LED104

ERROR

MODE

LED101
(GREEN)

MODE
/EXIT

SELECT ENTER

SW107 SW108 SW109

LED102

(RED)

En-32

Setting method(2)

1: FUNCTION Setting

2: Setting the

fi rst 2 digits

3: Setting the

last 2 digits

First 2 digits Last 2 digits

(Blinking)

(Blinking)

(Blinking)

(Blinking)

(Blinking)

(Blinking)

(Blinking)

EXIT

(Blinking)

(Blinking)

(Blinking)

(Blinking)

(the display when the main power is turned on)

(When [F3] to [F9] are displayed, continue to press the SELECT button until [F2] is displayed.)

Every press of the SE­LECT button will change
the setting number for the
fi rst 2 digits.

Press the SELECT button to change the value for the last 2 digits.

Press the ENTER button to confi rm
the value “02” for the last 2 digits

Press the ENTER button to confi rm

Continue to press the SELECT button until the
desired number appears at the last 2 digits.

Press the MODE/EXIT button to cancel the setting mode.

Press the SELECT
button to select
the next item for
the fi rst 2 digits.

(Setting is complete when the lamp lights up)

(Setting is complete when the lamp lights up)

Press the MODE/EXIT button.

Press the SELECT button.

Press the SELECT button Press the SELECT button

Press the ENTER button.

Press the ENTER button

Press the ENTER button

7 segment LED display
(LED105, LED104)

＆＞

＆＜

＠＠

＠＠ ＠＠ ＠＠

＠＠

＠＠

＞＠

８＜

８＜ ８＜

８＜

＠＠

＠＠ ＠＞ ＠＜

＠＜

＠：

＠＠

＠＠

＠＠ ＠＞

＠＞

Press the SELECT button to change the value for the last 2 digits.

Press the ENTER button to set the next item.

(If there is no operation for 5 seconds after the setting, the
display will return to “2: Setting the fi rst 2 digits”.)

Press the ENTER button to set the next item.

(If there is no operation for 5 seconds after the setting, the
display will return to “2: Setting the fi rst 2 digits”.)

Use the MODE/EXIT, SELECT, and ENTER buttons
to confi gure settings according to the procedures
below.

[1: FUNCTION Setting] → [2: Setting the fi rst
2 digits] → [3: Setting the last 2 digits]
(If no setting is made, the factory default setting
will be displayed.)

En-33

Address setting for signal amplifi ers7. 5.

Address setting for signal amplifi ers7. 5. 1.

When using signal amplifi ers, the address for signal amplifi ers must be set.
The address for signal amplifi ers can be set automatically from 1 outdoor unit (master unit) on the network.
Refer to the next section “Fig. Wiring example for automatic address setting” for the wiring example.
(For manual setting of address, refer to the signal amplifi er installation manual.)

Automatic address setting for signal amplifi ers7. 5. 2.

When setting the address of the signal amplifi er, please use the factory setting. (See the installation manual of the
signal amplifi er)

When the system is normal, nothing will be displayed on the 7 segment LED display.

When ERROR is displayed, inspect the units.
Use the MODE/EXIT, SELECT, and ENTER buttons on the outdoor unit print circuit board to confi gure settings ac-
cording to the procedures below.

1: FUNCTION Setting

First 2 digits Last 2 digits

(Blinking)

(Blinking)

(the display when the main
power is turned on)

(When [F4] to [F9] are displayed,
continue to press the SELECT but­ton until [F3] is displayed.)

Press the MODE/EXIT button.

Press the SELECT button.

＆

＞

＆：

(Blinking)

Press the SELECT button.

＆＜

Press the ENTER button

Automatic address setting

for signal amplifi ers

(Blinking)

Press the SELECT button until “10” is displayed.

Press the ENTER button for more than 3 seconds.

Setting is complete when the
number of units is displayed

(Blinking)

＠＠

＞＠

ﻸ

ﻮﻮ

ﻮ

ﻮ

ﻺﻶ

４

Press the ENTER button

End

1

1

(Blinking)

Press the MODE/EXIT button

＞＠＠＠

Indoor unit address setting7. 6.

Indoor unit address setting7. 6. 1.

Address must be set for the indoor unit.
Manual setting → •When setting with the switch inside the indoor unit, refer to the indoor unit operating

manual.

•When setting with a remote control, refer to the remote control operating manual.
Automatic setting → •Check that the wiring is as shown in the fi gure below. Operate using the outdoor

master unit of each refrigerant system.

En-34

Wiring example for automatic address settingFig.

(1) Signal amplifi er wiring example
(2)(3)(4) Indoor unit wiring example

(Connect the indoor and outdoor units of the same refrigerant system as shown below.)

2 12 8 21 4 1 26

31 4256 817

12 18 1 10 23 4 22

3

11

28

89

(2

）

(3)

(4)

(1)

(1)

Refrigerant system1

Refrigerant system2

Refrigerant system3

Master unit

Master unit

Master unit

Signal amplifi er

Signal amplifi er

・NOTE)

The automatic address function can be used for a maximum of 48 indoor units installed to the same refrigerant sys-

tem. When network is connected to other refrigerant systems, the automatic address function cannot be used.

・

The addresses of indoor units that have been confi gured automatically cannot be assigned in the order when they

are installed. (Refer to the indoor unit installation manual for the procedures to check the addresses.)

Procedures to enable automatic address setting on indoor units7. 6. 2.



Check that the rotary switch IU AD on the indoor unit circuit board is set to “00”.If it is not set to “00”, it means the ad­dress of that device is not set. (factory default is “00”).

Turn on the power of the indoor and outdoor units.

When the system is normal, nothing will be displayed on the 7 segment LED display.

When ERROR is displayed, inspect the units.
Use the MODE/EXIT, SELECT, and ENTER buttons on the outdoor unit print circuit board to confi gure settings ac-
cording to the procedures below.

It may take about 10 minutes for completing the
processing.

End

1

1

＆＞

＆：

＆＜

1: FUNCTION Setting

First 2 digits

Last 2 digits

(Blinking)

(Blinking)

(the display when the
main power is turned on)

(When [F4] to [F9] are displayed,
continue to press the SELECT but­ton until [F3] is displayed.)

Press the MODE/EXIT button.

Press the SELECT button.

(Blinking)

Press the SELECT button.

Press the ENTER button

＞＠

＞＞

＞４

ﻸ

ﻮﻮ

ﻮﻮ

ﻺﻶ

First 2 digits

Last 2 digits

(Blinking)

(Blinking)

Press the SELECT button until “11” is displayed.

Press the ENTER button for more than 3 seconds.

Automatic address setting
for indoor units

＠

(Blinking)

Press the ENTER button

The number of indoor units with normal settings will
be displayed at the fi rst 2 digits of the 7 segment LED
display. The number of indoor units with error will be
displayed at the last 2 digits.

NOTE) After the ENTER button is pressed, the end
processing will occur for about 30 seconds. During this
period, the 7 segment LED display will blink.

En-35

Resistance measurement of transmission cable 7. 7.

(Measure with breaker OFF)

CAUTION

Do not turn on the power if the resistance between the terminals of the transmission cable is abnormal. Otherwise,
the circuit board may be damaged.

Measure the resistance between 2 terminals of a
transmission cable.

Transmission cable connecting indoor (1)
units, outdoor units, and signal amplifi ers

Measure the resistance of the signal ampli­fi er terminal and the terminal of the indoor and
outdoor units connected farthest away from the
device where terminal resistor is measured.
A value from the table is displayed, depending
on the distance from the signal amplifi er and
the device where the terminal resistor is set.
This value is an estimate.

Transmission cable connecting outdoor (2)
units in a refrigerant system

The resistance between the terminals of the
transmission cable is 45-60Ω.
This value is an estimate.

Distance from termination resistor (m)

0 ~100 ~ 200 ~ 300 ~400 ~500

Approximate resistance (Ω)

0 ~ 50

A short circuit somewhere or 2 or

more termination resistors are connected
50
60
70
80
90

100

110
120
130
140
150
160
170
180

190 ~ Faulty contact or wiring length over 500 m

1K ~∞

Faulty contact, open circuit, or no
termination resistor

En-36

PIPE INSTALLATION II8.

A Connection systemFig.

In case of connected 1 outdoor unit A)

Outdoor unit

Pressure gauge

Vac uum
pump

Scale

Pressure regulating
valve

Nitrogen

Indoor

unit

Indoor

unit

In case of connected many outdoor units B)

Pressure regulating valve

Pressure gauge

Outdoor unit Outdoor unit

Nitrogen

Scale

Vac uum
pump

Indoor
unit

Indoor
unit

BFig.

Charging cap

Val ve

Cap

Close

Hexagon
wrench

Close

Open

Open

Spindle

ATabl e.

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)

Sealing test8. 1.

CAUTION

Use only nitrogen gas.•
Never use refrigerant gas, oxygen, in fl 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 fl are connection areas and brazed 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.

En-37

Vacuum process8. 2.

CAUTION

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

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

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 2 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 2 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 pauge.

Evacuation procedure

Remove 1) the caps of the gas pipe and liquid pipe and check that the valves are closed.
Remove the charging cap. 2)

Connect a vacuum pump and a pressure gauge to a charging hose and connect it to the charging port. 3)
Activate the vacuum pump and vacuum the indoor unit and connection piping until the pressure gauge be- 4)
comes -100.7kPa (-755mmHg).
Evacuate from both the gas pipe and the liquid pipe.
Continue evacuating the system for 1 hour after the pressure gauge reads -100.7kPa (-755mmHg). 5)
Remove 6) the charging hose and reinstall the charging cap.

Additional charging8. 3.

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 specifi ed amount will cause a malfunction.

Charge refrigerant using the liquid pipe.•

Adding refrigerant through the gas pipe will cause a malfunction.

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

equipped with a siphon, it is not necessary to place the cylinder upright.

Procedure for charging the system with refrigerant8. 3. 1.

Remov 1) e the charging cap from the liquid pipe.
Attach a charging hose to the refrigerant cylinder, and connect it to the charging port. 2)

Add refrigerant by calculating the additional refrigerant volume in accordance with the calculation formula 3)
indicated below.
Remove the charging hose and install the charging cap. 4)
Remove the body caps (gas pipe, liquid pipe, and oil pipe {if multiple units are installed}), and open the 5)
valves.
Close the body caps. 6)
After a 7) dding refrigerant, indicate the added charging volume on the unit.

Tighten the body caps and charging caps to the torque values specifi ed in the Table A.*
To open and close the valves,
Use an M4 hexagon wrench for liquid and oil pipes.
Use an M10 hexagon wrench for gas pipes.

**

If you can not charge the specifi ed amount of refrigerant with the above method, be sure to charge the refrigerant through the gas pipe

while operating in cooling mode. In order to prevent liquid back-fl ow, carefully operate the cooling cylinder valve so that the refrigerant will
fl ow in certain part at a time.

En-38

Checking total amount of refrigerant and calculating the amount of refrigerant charge to be added8. 3. 2.

The amount of refrigerant charge to be added is the total value of the basic refrigerant charge amount and the •
value calculated from the length of the liquid pipe.
Round up the value to 2 dec• imal places.

Model HP

d

Factory charged

amount (kg)

a

Additional amount

for outdoor unit (kg)

AJ

A72LALH 8HP 11.20 0

AJ

A90LALH 10HP 11.20 0

AJ

108LALH 12HP 11.80 1.20

AJ

126LALH 14HP 11.80 3.30

AJ

144LALH 16HP 11.80 3.30

Diameter of liquid

pipe (mm)

b

Additional amount for

pipe length (kg/m)
Ø6.35 0.021
Ø9.53 0.058

Ø12.70 0.114
Ø15.88 0.178
Ø19.05 0.268

Calculation of additional amount for outdoor unit(1)

A =

a

Outdoor unit1

additional amount for

outdoor unit

kg

+

a

Outdoor unit2

additional amount for

outdoor unit

kg

+

a

Outdoor unit3

additional amount for

outdoor unit

kg

=

Calculation of additional amount for pipe length(2)

B =

Total length

of ø19.05 mm

liquid pipe

b

× 0.268

(kg/m)

m

kg

+

Total length of

ø15.88 mm

liquid pipe

b

× 0.178

(kg/m)

m

kg

+

Total length of

ø12.70 mm

liquid pipe

b

× 0.114

(kg/m)

m

kg

+

Total length of

ø9.53 mm

liquid pipe

b

× 0.058

(kg/m)

m

kg

+

Total length of

ø6.35 mm

liquid pipe

b

× 0.021 (kg/

m)

m

kg

=

Calculation of additional charge refrigerant(3)

C=A+B = (Round up C to 2 decimal place)

Calculation of factory charged amount(4)

D =

d

Outdoor unit1

factory charged amount

kg

+

d

Outdoor unit2

factory charged amount

kg

+

d

Outdoor unit3

factory charged amount

kg

=

Total refrigerant amount check(5)

E=C+D=

Note : Check the total refrigerant amount under the following conditions

Condition Computational formula

For 1 outdoor unit per refrigerant system : Total amount of refrigerant

<
=

31.5kg E

<
=

31.5kg

For 2 outdoor units per refrigerant system : Total amount of refrigerant

<
=

63kg E

<
=

63kg

For 3 outdoor units per refrigerant system : Total amount of refrigerant

<
=

94.5kg E

<
=

94.5kg

Total

kg

Total

kg

kg

Total

kg

kg

En-39

<Calculation>

When there are 3 outdoor units (AJ• 144LALH, AJ 126LALH, AJ 108LALH) connected to 1 system

Calculation of additional amount for outdoor unit(1)

A=3.30(kg)+3.30(kg)+1.20(kg)=7.80(kg)

Calculation of additional amount for pipe length(2)

If liquid pipe piping length is the following
ф19.05 : 50m, ф15.88 : 25m, ф12.70 : 0m, ф9.53 : 20m, ф6.53 : 15m
Additional charge volume B=50(m)×0.268(kg/m)+25(m)×0.178(kg/m)+0(m)×0.114(kg/m)
+20(m)×0.058(kg/m)+15(m)×0.021(kg/m)
=19.325kg

Calculation of additional charge refrigerant(3)

C=A+B =7.80(kg)+19.33(kg)=27.13(kg)

Calculation of factory charged amount(4)

D=11.8(kg)+11.8(kg)+11.8(kg)=35.4 (kg)

Check the total amount of refrigerant(5)

When 3 outdoor units are connected to 1 system, the following condition must be satisfi ed.
Condition: E=C+D

<
=

94.5(kg)
Calculation: 27.13(kg)+35.4(kg)=62.53(kg)<94.5(kg)
→No problem if the above condition is satisfi ed.

Installing insulation8. 4.

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 in-•
door 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.

Selection of insulationTable.

(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)

6.35 8 10 13 17

9.52 9 11 14 18

12.70 10 12 15 19

15.88 10 12 16 20

19.05 10 13 16 21

22.22 11 13 17 22

28.58 11 14 18 23

34.92 11 14 18 24

41.27 12 15 19 25

When an ambient temperature and relative humidity exceed 32 °C, please strengthen heat insulation of refrigerant pipe.*

Putty

Insulation

En-40

TEST RUN9.

Pre-test run check items9. 1.

Before the test operation, check the following items.

Is there a gas leakage? (At pipe connections {fl ange connections and brazed areas})

①

Is the system charged with the specifi ed volume of refrigerant?

②

Is the refrigerant circuit address correct?

③

Is a breaker installed at the power supply cable of every outdoor unit?

④

Are the wires connected to the terminals without looseness, and in accordance with the specifi cations?

⑤

Are the initial settings of the switches of the outdoor unit correctly confi gured?

⑥

Is the 3-way valve of the outdoor unit open? (Gas pipe and liquid pipe)

⑦

Is power supplied to the crank case heater for more than 12 hours? Electricity current in short period of time

⑧

may result in compressor damage.
Are all the indoor units within the same coolant system connected to the power? Operating indoor units

⑨

which are not connected to the power may result in malfunctions.

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.

Test operation method9. 2.

Be sure to confi gure test run settings only when the outdoor unit has stopped operating.

Perform test operation for each refrigerant system.
You can set "cooling test operation" or "heating test operation" with the push-button switch on the outdoor unit print
circuit board.

Test operation setting method

Use the MODE/EXIT, SELECT, and ENTER buttons on the indoor unit print circuit board to confi gure settings ac-
cording to the procedures 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, all 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 suffi cient length of time before restarting the operation.

En-41

After the test operation is complete, turn off the power. Attach the cover of the electrical component box and the front
panel of the outdoor unit.

Press the ENTER button.

1: FUNCTION Setting

Settings for starting

test operation

(When [F4] to [F9] are displayed, continue to press the
SELECT button until [F3] is displayed.)

For cooling operation,
press the SELECT button
until "00" is displayed.

This will be displayed
when the cooling
test operation is
complete.

This will be displayed
when the heating
test operation is
complete.

This will be displayed
after 5 seconds.

This will be displayed
after 5 seconds.

This will be displayed
after 5 seconds.

This will be displayed
after 5 seconds.

This will be displayed
when the cooling
operation mode is
canceled.

This will be displayed
when the heating
operation mode is
canceled.

For heating operation,
press the SELECT button
until "01" is displayed.

＆＞

＆：

(Blinking)

(Blinking)

(Blinking)

(Blinking)

(Blinking)

(Blinking) (Blinking)

(Blinking) (Blinking)

EXIT

＆＜

Press the ENTER button for
more than 3 seconds.

Press the ENTER button for
more than 3 seconds.

Press the ENTER button for
more than 3 seconds.

Press the ENTER button for
more than 3 seconds.

＠

＠

＠＠

＠＠

＠＜

＠＜

ﻲﻴ

ﻲﻴ

＠＞

＠＞

＠＜

＠＜

ﻲﻴ

ﻲﻴ

ﻮﻮ

ﻮﻮ

ﻶ（

ﻶ（

ﻮﻮ

ﻶ（

ﻶ（

First 2 digits Last 2 digits

(the display when the main power is turned on)

Press the MODE/EXIT button.

(Blinking)

(Blinking)

Press the SELECT button.

Press the SELECT button.

Press the SELECT button.

Press the SELECT button.

Stop test run settings

Note

Check that the indoor and outdoor units connected to the same refrigerant system are operating normally.•
When indoor or outdoor units are not operating, or when the indoor and outdoor units of other refrigerant sys-•
tems are operating, the indoor/outdoor unit address or DIP switch for the number of connected slave units are
not confi gured correctly.
The system will not operate normally with an incorrect DIP switch setting.•
Stop the system immediately and recheck the DIP switch setting.

En-42

Checklist9. 3.

Check description Check method Criteria

1

High and low pressure values are normal. Check it with a pressure gauge.

Cooling: low pressure approx. 0.8 MPa
Heating: high pressure approx. 3.0 MPa

2

Drain water is discharged smoothly through
the drain hose.

Check it by pouring water. ―

3

Indoor and outdoor unit fans are operating. Check them visually. ―

4

Compressor operates after the indoor unit operates.

Check the operating sound. ―

5

Difference between inlet and outlet tempera­tures is normal.

Measure the inlet and outlet tem­peratures.

Temperature difference 10 degrees

6

Error is not displayed Check the 7 segment LED display Error blinking or no error code display

LED Display10.

You can determine the operating status by the lighting up and blinking of the 7 segment LED display.
Check the status using the table below.

Normal operation mode10. 1.

Mode Code Description

Operation

CL Cooling
Ht Heating

o r During oil recovery operation
d F During defrosting operation
P C During power saving operation
L n During low noise operation
S n During setting of snowfall mode

En-43

Error display mode10. 2.

Mode Code Description Mode Code Description

Communication

error

E 1 3. 1 Communication error between Outdoor unit

Outdoor unit actua-

tor error

E92.1Compressor 2 error
E 1 4. 1 Outdoor unit network communication 1 error E 9 2. 2 Compressor 2 overcurrent error
E 1 4. 2 Outdoor unit network communication 2 error E 9 3. 1 Inverter compressor start up error

E 1 4. 5 The number of indoor unit shortage E 9 4. 1 Trip detection

Function setting

error

E 2 8. 1 Auto address setting error E 9 5. 5 Compressor motor loss of synchronization

E 2 8. 4 Signal amplifi er auto address error E 9 7. 1 Outdoor unit fan motor lock error

Indoor unit actuator

error

E 5 U. 1 Indoor unit error E 9 7. 4 Outdoor unit fan motor undervoltage

Outdoor unit PCB/

Electrical compo-

nent/ Switch error

E 6 1. 5 Outdoor unit reverse phase wire error E 9 7. 5 Outdoor unit fan motor

E 6 2. 3 Outdoor unit EEPROM access error E 9 U. 2 Slave unit error

E 6 2. 6 Inverter communication error

Refrigerant system

abnormal

E A 1. 1 Discharge temperature 1 abnormal

E 6 2. 8 EEPROM data corrupted error E A 2. 1 Discharge temperature 2 abnormal

E 6 3. 1 Inverter error E A 3. 1 Compressor1 temperature abnormal

E 6 7. 2 Inverter PCB short interruptions detection E A 3. 2 Compressor2 temperature abnormal
E 6 8. 1 Magnetic relay error E A 4. 1 High pressure abnormal
E68.2

Rush current limiting resistor temp rise protection

E A 4. 2 High pressure protection1

E69.1

Outdoor unit transmission PCB Parallel
communication error

E A 4. 3 High pressure protection2

Outdoor unit sensor

error

E 7 1. 1 Discharge Temp Sensor1 Error E A 5. 1 Low pressure abnormal

E 7 1. 2 Discharge Temp Sensor2 Error E A C. 4 Heat sink temperature abnormal

E 7 2. 1 Compressor Temp Sensor1 Error

E 7 2. 2 Compressor Temp Sensor2 Error

E 7 3. 3 Outdoor unit Heat Ex. liquid temp. sensor error

E 7 4. 1 Outdoor Temp Sensor Error

E75.1Suction Gas Temp Sensor Error

E77.1Heat sink temp. sensor error

E 8 2. 1 Sub-cool Heat Ex. gas inlet temp. sensor error

E 8 2. 2 Sub-cool Heat Ex. gas outlet temp. sensor error

E 8 3. 1 Liquid pipe temp. sensor1 error

E 8 3. 2 Liquid pipe temp. sensor2 error

E84.1Current sensor error

E 8 6. 1 Discharge pressure sensor error

E 8 6. 3 Suction pressure sensor error

E 8 6. 4 High pressure switch 1 error

E 8 6. 5 High pressure switch 2 error

㪃

㪃 㪃 㪃 㪃 㪃 㪃 㪃

㪃

㪃

㪃

㫋㪑

㪣㪑

㪎㪑

㪟

㪑

㪡㪑

㪍㪑

㪘㪑㪚㪑㪝㪑

㪃 㪃 㪃

㪻㪑 㫅㪑 㫆

㪑

㫉㪑

㪃 㪃

㪃

㪃

㪃

㪐㪑

㪧

㪑

㪬㪑

㪪㪑

㪏㪑

㪃

㪃

㪃 㪃

㪌㪑㪊㪑 㪋

㪑

㪈㪑 㪉㪑

7 segment LED display:

En-44

INFORMATION11.

Main contents of label

Item Detail

Model name 1. Model name

Serial number 2. Serial number

Electric characteristics 3. Phase, rated voltage, and frequency

Weight 4. Product weight

Capacity 5. Cooling/heating capacity under cooling/heating condition (refer to item 15)

Current 6.

Electric current during cooling/heating operation under cooling/heating condition
(refer to item 15)

Input power 7. Input during cooling/heating operation under cooling/heating condition (refer to item 15)

Max. Current 8.

Maximum electric current
(temperature condition is max. cooling condition [refer to item 16])

Air circulation 9. Air circulation

Noise level10. Noise level

Refrigerant11. Refrigerant type and initial charging amount

Max. pressure (HP/LP)12. Means pressure of High Pressure side/Low Pressure side

Protection13. Protection level against dust and water

Working temperature14. Working temperature

Condition of cooling/heating15.

Dry-bulb temperature and wet-bulb temperature under standard cooling/heating condition

Condition of max. cooling16. Dry-bulb temperature and wet-bulb temperature at maximum electric current and input

Manufacture year17. Manufacture year

Origin18. Origin country

Manufacturer19.

Manufacturer
FUJITSU GENERAL LIMITED
Address : 1116, Suenaga, Takatsu-ku, Kawasaki 213-8502, Japan

Label