Mitsubishi PURY-P96, PURY-P240, PURY-P264, PURY-P288, PURY-P120 Service Handbook

WARNING

CAUTION

WARNING

Safety Precautions

Before installing the unit, thoroughly read the following safety precautions.
Observe these safety precautions for your safety.

This symbol is intended to alert the user to the presence of important instructions that must be followed to avoid

the risk of serious injury or death.

This symbol is intended to alert the user to the presence of important instructions that must be followed to avoid

the risk of serious injury or damage to the unit.

After reading this manual, give it to the user to retain for future reference.
Keep this manual for easy reference. When the unit is moved or repaired, give this manual to those who provide these

services.
When the user changes, make sure that the new user receives this manual.

Do not use refrigerant other than the type indicated in
the manuals provided with the unit and on the name­plate.

Doing so may cause the unit or pipes to burst, or result in
explosion or fire during use, during repair, or at the time of
disposal of the unit.
It may also be in violation of applicable laws.
MITSUBISHI ELECTRIC CORPORATION cannot be held
responsible for malfunctions or accidents resulting from the
use of the wrong type of refrigerant.

Ask your dealer or a qualified technician to install the
unit.

Improper installation by the user may result in water leak­age, electric shock, smoke, and/or fire.

Properly install the unit on a surface that can with­stand the weight of the unit.

Unit installed on an unstable surface may fall and cause in­jury.

Only use specified cables. Securely connect each ca­ble so that the terminals do not carry the weight of the
cable.

Improperly connected or fixed cables may produce heat
and start a fire.

Take appropriate safety measures against strong
winds and earthquakes to prevent the unit from falling.

If the unit is not installed properly, the unit may fall and
cause serious injury to the person or damage to the unit.

Do not make any modifications or alterations to the
unit. Consult your dealer for repair.

Improper repair may result in water leakage, electric shock,
smoke, and/or fire.

Do not touch the heat exchanger fins.

The fins are sharp and dangerous.

In the event of a refrigerant leak, thoroughly ventilate
the room.

If refrigerant gas leaks and comes in contact with an open
flame, poisonous gases will be produced.

When installing the All-Fresh type units, take it into
consideration that the outside air may be discharged
directly into the room when the thermo is turned off.

Direct exposure to outdoor air may have an adverse effect
on health. It may also result in food spoilage.

Properly install the unit according to the instructions
in the installation manual.

Improper installation may result in water leakage, electric
shock, smoke, and/or fire.

Have all electrical work performed by an authorized
electrician according to the local regulations and in­structions in this manual, and a dedicated circuit must
be used.

Insufficient capacity of the power supply circuit or improper
installation may result in malfunctions of the unit, electric
shock, smoke, and/or fire.

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WARNING

Securely attach the terminal block cover (panel) to the
unit.

If the terminal block cover (panel) is not installed properly,
dust and/or water may infiltrate and pose a risk of electric
shock, smoke, and/or fire.

After completing the service work, check for a gas
leak.

If leaked refrigerant is exposed to a heat source, such as a
fan heater, stove, or electric grill, poisonous gases may be
produced.

Only use the type of refrigerant that is indicated on the
unit when installing or reinstalling the unit.

Infiltration of any other type of refrigerant or air into the unit
may adversely affect the refrigerant cycle and may cause
the pipes to burst or explode.

When installing the unit in a small room, exercise cau­tion and take measures against leaked refrigerant
reaching the limiting concentration.

Consult your dealer with any questions regarding limiting
concentrations and for precautionary measures before in­stalling the unit. Leaked refrigerant gas exceeding the lim­iting concentration causes oxygen deficiency.

Consult your dealer or a specialist when moving or re­installing the unit.

Improper installation may result in water leakage, electric
shock, and/or fire.

To reduce the risk of burns, do not touch electrical
parts during or directly after operation.

Do not try to defeat the safety features of the unit.

Forced operation of the pressure switch or the temperature
switch by defeating the safety features of these devices, or
the use of accessories other than the ones that are recom­mended by MITSUBISHI may result in smoke, fire, and/or
explosion.

Only use accessories recommended by MITSUBISHI.

Ask a qualified technician to install the unit. Improper instal­lation by the user may result in water leakage, electric
shock, smoke, and/or fire.

Control box houses high-voltage parts.

When opening or closing the front panel of the control box,
do not let it come into contact with any of the internal com­ponents. Before inspecting the inside of the control box,
turn off the power, keep the unit off for at least 10 minutes,
and confirm that the voltage across the terminals of the in­verter circuit main capacitor has dropped to DC20V or less.
(It takes about 10 minutes to discharge electricity after the
power supply is turned off.)

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CAUTION

Precautions for handling units for use with R410A

Do not use the existing refrigerant piping.

A large amount of chlorine that may be contained in the re-

sidual refrigerant and refrigerating machine oil in the exist­ing piping may cause the refrigerating machine oil in the
new unit to deteriorate.

R410A is a high-pressure refrigerant and can cause the

existing pipes to burst.

Use refrigerant pipes made of phosphorus deoxidized
copper. Keep the inner and outer surfaces of the pipes
clean and free of such contaminants as sulfur, oxides,
dust, dirt, shaving particles, oil, and water.

These types of contaminants inside the refrigerant pipes
may cause the refrigerant oil to deteriorate.

Store the pipes to be installed indoors, and keep both
ends of the pipes sealed until immediately before braz­ing. (Keep elbows and other joints wrapped in plastic.)

Infiltration of dust, dirt, or water into the refrigerant system
may cause the refrigerating machine oil to deteriorate or
cause the unit to malfunction.

Use a small amount of ester oil, ether oil, or alkylben­zene to coat flares and flanges.

Infiltration of a large amount of mineral oil may cause the re­frigerating machine oil to deteriorate.

Charge liquid refrigerant (as opposed to gaseous re­frigerant) into the system.

If gaseous refrigerant is charged into the system, the com­position of the refrigerant in the cylinder will change and
may result in performance loss.

Use a vacuum pump with a reverse-flow check valve.

If a vacuum pump that is not equipped with a reverse-flow
check valve is used, the vacuum pump oil may flow into the
refrigerant cycle and cause the refrigerating machine oil to
deteriorate.

Prepare tools for exclusive use with R410A. Do not use
the following tools if they have been used with the con­ventional refrigerant (gauge manifold, charging hose,
gas leak detector, reverse-flow check valve, refrigerant
charge base, vacuum gauge, and refrigerant recovery
equipment.).

If the refrigerant or the refrigerating machine oil left on

these tools are mixed in with R410A, it may cause the re­frigerating machine oil to deteriorate.

Infiltration of water may cause the refrigerating machine

oil to deteriorate.

Gas leak detectors for conventional refrigerants will not

detect an R410A leak because R410A is free of chlorine.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of the refrig­erant will change, and the unit may experience power loss.

Exercise special care when handling the tools for use
with R410A.

Infiltration of dust, dirt, or water into the refrigerant system
may cause the refrigerating machine oil to deteriorate.

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Before installing the unit

WARNING

Do not install the unit where a gas leak may occur.

If gaseous refrigerant leaks and piles up around the unit, it
may be ignited.

Do not use the unit to keep food items, animals, plants,
artifacts, or for other special purposes.

The unit is not designed to preserve food products.

Do not use the unit in an unusual environment.

Do not install the unit where a large amount of oil or steam

is present or where acidic or alkaline solutions or chemical
sprays are used frequently. Doing so may lead to a re­markable drop in performance, electric shock, malfunc­tions, smoke, and/or fire.

The presence of organic solvents or corrosive gas (i.e.

ammonia, sulfur compounds, and acid) may cause gas
leakage or water leakage.

When installing the unit in a hospital, take appropriate
measures to reduce noise interference.

High-frequency medical equipment may interfere with the
normal operation of the air conditioner or vice versa.The
product may affect communication equipment. Visual inter­ruption to video images and noise may occur.

Do not install the unit on or over things that cannot get
wet.

When the humidity level exceeds 80% or if the drainage
system is clogged, the indoor unit may drip water. Drain wa­ter is also discharged from the outdoor unit. Install a central­ized drainage system if necessary.

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CAUTION

Before installing the unit (moving and reinstalling the unit) and performing
electrical work

Properly ground the unit.

Do not connect the grounding wire to a gas pipe, water pipe,
lightning rod, or grounding wire from a telephone pole. Im­proper grounding may result in electric shock, smoke, fire,
and/or malfunction due to noise interference.

Do not put tension on the power supply wires.

If tension is put on the wires, they may break and result in
excessive heat, smoke, and/or fire.

Install an earth leakage breaker for the inverter circuit
to avoid the risk of electric shock.

Failure to install an earth leakage breaker for the inverter
circuit may result in electric shock, smoke, and/or fire.

Use the kind of power supply wires that are specified
in the installation manual.

The use of wrong kind of power supply wires may result in
current leak, electric shock, and/or fire.

Use breakers and fuses (current breaker, remote
switch <switch + Type-B fuse>, moulded case circuit
breaker) with the proper current capacity.

The use of wrong capacity fuses, steel wires, or copper
wires may result in malfunctions, smoke, and/or fire.

Periodically check the installation base for damage.

If the unit is left on a damaged platform, it may fall and
cause injury.

Properly install the drain pipes according to the in­structions in the installation manual. Keep them insu­lated to avoid dew condensation.

Improper plumbing work may result in water leakage and
damage to the furnishings.

Exercise caution when transporting products.

Products weighing more than 20 kg should not be carried

alone.

Do not carry the product by the PP bands that are used on

some products.

Do not touch the heat exchanger fins. They are sharp and

dangerous.

When lifting the unit with a crane, secure all four corners

to prevent the unit from falling.

Properly dispose of the packing materials.

Nails and wood pieces in the package may pose a risk of

injury.

Plastic bags may pose a risk of choking hazard to chil-

dren. Tear plastic bags into pieces before disposing of
them.

Do not spray water on the air conditioner or immerse
the air conditioner in water.

Otherwise, electric shock and/or fire may result.

When handling units, always wear protective gloves to
protect your hands from metal parts and high-tempera­ture parts.

To reduce the risk of burns, do not touch electrical
parts during or directly after operation.

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Before the test run

CAUTION

Turn on the unit at least 12 hours before the test run.

Keep the unit turned on throughout the season. If the unit is
turned off in the middle of a season, it may result in malfunc­tions.

To avoid the risk of electric shock or malfunction of the
unit, do not operate switches with wet hands.

Do not touch the refrigerant pipes with bare hands dur­ing and immediately after operation.

During or immediately after operation, certain parts of the
unit such as pipes and compressor may be either very cold
or hot, depending on the state of the refrigerant in the unit
at the time. To reduce the risk of frost bites and burns, do
not touch these parts with bare hands.

Do not operate the unit without panels and safety
guards.

Rotating, high-temperature, or high-voltage parts on the unit
pose a risk of burns and/or electric shock.

Do not turn off the power immediately after stopping
the operation.

Keep the unit on for at least five minutes before turning off
the power to prevent water leakage or malfunction.

Do not operate the unit without the air filter.

Dust particles may build up in the system and cause mal­functions.

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CONTENTS

I

II

III

IV

V

VI

VII

VIII

IX

Read Before Servicing

[1] Read Before Servicing.............................................................................................................. 3

[2] Necessary Tools and Materials ................................................................................................ 4

[3] Piping Materials ........................................................................................................................ 5

[4] Storage of Piping ...................................................................................................................... 7

[5] Pipe Processing........................................................................................................................ 7

[6] Brazing...................................................................................................................................... 8

[7] Air Tightness Test..................................................................................................................... 9

[8] Vacuum Drying (Evacuation) ..................................................................................................10

[9] Refrigerant Charging .............................................................................................................. 12

[10] Remedies to be taken in case of a Refrigerant Leak............................................................ 12

[11] Characteristics of the Conventional and the New Refrigerants ............................................ 13

[12] Notes on Refrigerating Machine Oil ...................................................................................... 14

Restrictions

[1] System configuration .............................................................................................................. 17

[2] Types and Maximum allowable Length of Cables .................................................................. 18

[3] Switch Settings and Address Settings .................................................................................... 19

[4] Sample System Connection ................................................................................................... 26

[5] An Example of a System to which an MA Remote Controller is connected ........................... 28

[6] An Example of a System to which an ME Remote Controller is connected ........................... 42

[7] An Example of a System to which both MA Remote Controller and ME Remote

Controller are connected ........................................................................................................44

[8] Restrictions on Pipe Length.................................................................................................... 47

Outdoor Unit Components

[1] Outdoor Unit Components and Refrigerant Circuit ................................................................. 61

[2] Control Box of the Outdoor Unit.............................................................................................. 65

[3] Outdoor Unit Circuit Board...................................................................................................... 70

[4] BC Controller Components..................................................................................................... 81

[5] Control Box of the BC Controller ............................................................................................84

[6] BC Controller Circuit Board .................................................................................................... 85

Remote Controller

[1] Functions and Specifications of MA and ME Remote Controllers .......................................... 89

[2] Group Settings and Interlock Settings via the ME Remote Controller .................................... 90

[3] Interlock Settings via the MA Remote Controller .................................................................... 94

[4] Using the built-in Temperature Sensor on the Remote Controller .......................................... 95

Electrical Wiring Diagram

[1] Electrical Wiring Diagram of the Outdoor Unit ........................................................................ 99

[2] Electrical Wiring Diagram of the BC Controller..................................................................... 104

[3] Electrical Wiring Diagram of Transmission Booster.............................................................. 114

Refrigerant Circuit

[1] Refrigerant Circuit Diagram .................................................................................................. 117

[2] Principal Parts and Functions ............................................................................................... 125

Control

[1] Functions and Factory Settings of the Dipswitches .............................................................. 137

[2] Controlling the Outdoor Unit ................................................................................................. 144

[3] Controlling BC Controller ...................................................................................................... 158

[4] Operation Flow Chart............................................................................................................ 159

Test Run Mode

[1] Items to be checked before a Test Run ................................................................................ 167

[2] Test Run Method .................................................................................................................. 168

[3] Operating Characteristic and Refrigerant Amount................................................................ 169

[4] Adjusting the Refrigerant Amount......................................................................................... 169

[5] Refrigerant Amount Adjust Mode.......................................................................................... 172

[6] The following symptoms are normal. .................................................................................... 174

[7] Standard Operation Data (Reference Data) ......................................................................... 175

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Troubleshooting

[1] Error Code Lists.................................................................................................................... 195

[2] Responding to Error Display on the Remote Controller........................................................ 199

[3] Investigation of Transmission Wave Shape/Noise ............................................................... 286

[4] Troubleshooting Principal Parts ............................................................................................ 289

[5] Refrigerant Leak ................................................................................................................... 338

[6] Compressor Replacement Instructions................................................................................. 340

[7] Servicing the BC controller ................................................................................................... 350

X

[8] Troubleshooting Using the Outdoor Unit LED Error Display................................................. 353

LED Monitor Display on the Outdoor Unit Board

[1] How to Read the LED on the Service Monitor ...................................................................... 357

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Read Before Servicing

[1] Read Before Servicing ....................................................................................................... 3

[2] Necessary Tools and Materials.......................................................................................... 4

[3] Piping Materials ................................................................................................................. 5

[4] Storage of Piping ............................................................................................................... 7

[5] Pipe Processing................................................................................................................. 7

[6] Brazing............................................................................................................................... 8

[7] Air Tightness Test.............................................................................................................. 9

[8] Vacuum Drying (Evacuation) ........................................................................................... 10

[9] Refrigerant Charging........................................................................................................ 12

[10] Remedies to be taken in case of a Refrigerant Leak ....................................................... 12

[11] Characteristics of the Conventional and the New Refrigerants .......................................13

[12] Notes on Refrigerating Machine Oil ................................................................................. 14

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[ I Read Before Servicing ]

CAUTION

I Read Before Servicing

[1] Read Before Servicing

1. Check the type of refrigerant used in the system to be serviced.
Refrigerant Type

Multi air conditioner for building application CITY MULTI R2 TKMU-A, YKMU-A series R410A

2. Check the symptoms exhibited by the unit to be serviced.

Refer to this service handbook for symptoms relating to the refrigerant cycle.

3. Thoroughly read the safety precautions at the beginning of this manual.

4. Preparing necessary tools: Prepare a set of tools to be used exclusively with each type of refrigerant.

Refer to "Necessary Tools and Materials" for information on the use of tools.(page 4)

5. Verification of the connecting pipes: Verify the type of refrigerant used for the unit to be moved or replaced.

Use refrigerant pipes made of phosphorus deoxidized copper. Keep the inner and outer surfaces of the pipes clean and free

of such contaminants as sulfur, oxides, dust, dirt, shaving particles, oil, and water.

These types of contaminants inside the refrigerant pipes may cause the refrigerant oil to deteriorate.

6. If there is a leak of gaseous refrigerant and the remaining refrigerant is exposed to an open flame, a poisonous gas
hydrofluoric acid may form. Keep workplace well ventilated.

Install new pipes immediately after removing old ones to keep moisture out of the refrigerant circuit.
The use of refrigerant that contains chloride, such as R22, will cause the refrigerating machine oil to deteriorate.

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[ I Read Before Servicing ]

[2] Necessary Tools and Materials

Prepare the following tools and materials necessary for installing and servicing the unit.

Tools for use with R410A (Adaptability of tools that are for use with R22 or R407C)

1. To be used exclusively with R410A (not to be used if used with R22 or R407C)

Tools/Materials Use Notes

Gauge Manifold Evacuation and refrigerant charging Higher than 5.09MPa[738psi] on the

Charging Hose Evacuation and refrigerant charging The hose diameter is larger than the

Refrigerant Recovery Cylinder Refrigerant recovery

Refrigerant Cylinder Refrigerant charging The refrigerant type is indicated. The

Charging Port on the Refrigerant Cylinder Refrigerant charging The charge port diameter is larger

Flare Nut Connection of the unit with the pipes Use Type-2 Flare nuts.

2. Tools and materials that may be used with R410A with some restrictions

Tools/Materials Use Notes

Gas Leak Detector Gas leak detection The ones for use with HFC refrigerant

Vacuum Pump Vacuum drying May be used if a check valve adapter

Flare Tool Flare processing Flare processing dimensions for the

Refrigerant Recovery Equipment Refrigerant recovery May be used if compatible with

high-pressure side

conventional model.

cylinder is pink.

than that of the current port.

may be used.

is attached.

piping in the system using the new re­frigerant differ from those of R22. Re­fer to I [3] Piping Materials.

R410A.

3. Tools and materials that are used with R22 or R407C that may also be used with R410A

Tools/Materials Use Notes

Vacuum Pump with a Check Valve Vacuum drying

Bender Bending pipes

Torque Wrench Tightening flare nuts Only the flare processing dimensions

for pipes that have a diameter of
ø12.70 (1/2") and ø15.88 (5/8") have
been changed.

Pipe Cutter Cutting pipes

Welder and Nitrogen Cylinder Welding pipes

Refrigerant Charging Meter Refrigerant charging

Vacuum Gauge Vacuum level check

4. Tools and materials that must not be used with R410A

Tools/Materials Use Notes

Charging Cylinder Refrigerant charging Prohibited to use

Tools for R410A must be handled with special care to keep moisture and dust from infiltrating the cycle.

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[ I Read Before Servicing ]

[3] Piping Materials

Do not use the existing piping!

1. Copper pipe materials

O-material (Annealed) Soft copper pipes (annealed copper pipes). They can easily be bent with hands.

1/2H-material (Drawn) Hard copper pipes (straight pipes). They are stronger than the O-material (Annealed)

The distinction between O-materials (Annealed) and 1/2H-materials (Drawn) is made based on the strength of the pipes them-

selves.

O-materials (Annealed) can easily be bent with hands.
1/2H-materials (Drawn) are considerably stronger than O-material (Annealed) at the same thickness.

2. Types of copper pipes

Maximum working pressure Refrigerant type

3.45 MPa [500psi] R22, R407C etc.

4.30 MPa [624psi] R410A etc.

3. Piping materials/Radial thickness

Use refrigerant pipes made of phosphorus deoxidized copper.
The operation pressure of the units that use R410A is higher than that of the units that use R22.
Use pipes that have at least the radial thickness specified in the chart below.
(Pipes with a radial thickness of 0.7 mm or less may not be used.)

at the same radial thickness.

Pipe size (mm[in]) Radial thickness (mm) Type

ø6.35 [1/4"] 0.8t

ø9.52 [3/8"] 0.8t

ø12.7 [1/2"] 0.8t

ø15.88 [5/8"] 1.0t

ø19.05 [3/4"] 1.0t

ø22.2 [7/8"] 1.0t

ø25.4 [1"] 1.0t

ø28.58 [1-1/8"] 1.0t

ø31.75 [1-1/4"] 1.1t

ø34.93 [1-3/8"] 1.1t

ø41.28 [1-5/8"] 1.2t

The pipes in the system that uses the refrigerant currently on the market are made with O-material (Annealed), even if the

pipe diameter is less than ø19.05 (3/4"). For a system that uses R410A, use pipes that are made with 1/2H-material (Drawn)
unless the pipe diameter is at least ø19.05 (3/4") and the radial thickness is at least 1.2t.

The figures in the radial thickness column are based on the Japanese standards and provided only as a reference. Use pipes

that meet the local standards.

O-material (Annealed)

1/2H-material,

H-material (Drawn)

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[ I Read Before Servicing ]

4. Thickness and refrigerant type indicated on the piping materials

Ask the pipe manufacturer for the symbols indicated on the piping material for new refrigerant.

5. Flare processing (O-material (Annealed) and OL-material only)

The flare processing dimensions for the pipes that are used in the R410A system are larger than those in the R22 system.

Flare processing dimensions (mm[in])

A dimension (mm)

Pipe size (mm[in])

R410A R22, R407C

ø6.35 [1/4"] 9.1 9.0

ø9.52 [3/8"] 13.2 13.0

ø12.7 [1/2"] 16.6 16.2

Dimension A

ø15.88 [5/8"] 19.7 19.4

ø19.05 [3/4"] 24.0 23.3

If a clutch-type flare tool is used to flare the pipes in the system using R410A, the length of the pipes must be between 1.0
and 1.5 mm. For margin adjustment, a copper pipe gauge is necessary.

6. Flare nut

The flare nut type has been changed to increase the strength. The size of some of the flare nuts have also been changed.

Flare nut dimensions (mm[in])

B dimension (mm)

Pipe size (mm[in])

R410A R22, R407C

ø6.35 [1/4"] 17.0 17.0

ø9.52 [3/8"] 22.0 22.0

ø12.7 [1/2"] 26.0 24.0

Dimension B

ø15.88 [5/8"] 29.0 27.0

ø19.05 [3/4"] 36.0 36.0

The figures in the radial thickness column are based on the Japanese standards and provided only as a reference. Use pipes
that meet the local standards.

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[ I Read Before Servicing ]

[4] Storage of Piping

1. Storage location

Store the pipes to be used indoors. (Warehouse at site or owner's warehouse)
If they are left outdoors, dust, dirt, or moisture may infiltrate and contaminate the pipe.

2. Sealing the pipe ends

Both ends of the pipes should be sealed until just before brazing.
Keep elbow pipes and T-joints in plastic bags.

The new refrigerator oil is 10 times as hygroscopic as the conventional refrigerating machine oil (such as Suniso) and, if not
handled with care, could easily introduce moisture into the system. Keep moisture out of the pipes, for it will cause the oil to
deteriorate and cause a compressor failure.

[5] Pipe Processing

Use a small amount of ester oil, ether oil, or alkylbenzene to coat flares and flanges.

Use a minimum amount of oil.
Use only ester oil, ether oil, and alkylbenzene.

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[ I Read Before Servicing ]

[6] Brazing

No changes have been made in the brazing procedures. Perform brazing with special care to keep foreign objects (such as oxide
scale, water, and dust) out of the refrigerant system.

Example: Inside the brazed connection

Use of no inert gas during brazing Use of inert gas during brazing

1. Items to be strictly observed

Do not conduct refrigerant piping work outdoors if raining.
Use inert gas during brazing.
Use a brazing material (BCuP-3) that requires no flux when brazing between copper pipes or between a copper pipe and

copper coupling.

If installed refrigerant pipes are not immediately connected to the equipment, then braze and seal both ends.

2. Reasons

The new refrigerating machine oil is 10 times as hygroscopic as the conventional oil and is more likely to cause unit failure if

water infiltrates into the system.

Flux generally contains chloride. Residual flux in the refrigerant circuit will cause sludge to form.

3. Notes

Do not use commercially available antioxidants because they may cause the pipes to corrode or refrigerating machine oil to
deteriorate.

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[ I Read Before Servicing ]

[7] Air Tightness Test

No changes have been made in the detection method. Note that a refrigerant leak detector for R22 will not detect an R410A leak.

Halide torch R22 leakage detector

1. Items to be strictly observed

Pressurize the equipment with nitrogen up to the design pressure (4.15MPa[601psi]), and then judge the equipment's air tight-

ness, taking temperature variations into account.

Refrigerant R410A must be charged in its liquid state (vs. gaseous state).

2. Reasons

Oxygen, if used for an air tightness test, poses a risk of explosion. (Only use nitrogen to check air tightness.)
Refrigerant R410A must be charged in its liquid state. If gaseous refrigerant in the cylinder is drawn out first, the composition

of the remaining refrigerant in the cylinder will change and become unsuitable for use.

3. Notes

Procure a leak detector that is specifically designed to detect an HFC leak. A leak detector for R22 will not detect an
HFC(R410A) leak.

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[ I Read Before Servicing ]

[8] Vacuum Drying (Evacuation)

(Photo1) 15010H (Photo2) 14010

Recommended vacuum gauge:
ROBINAIR 14010 Thermistor Vacuum Gauge

1. Vacuum pump with a reverse-flow check valve (Photo1)

To prevent the vacuum pump oil from flowing into the refrigerant circuit during power OFF or power failure, use a vacuum
pump with a reverse-flow check valve.
A reverse-flow check valve may also be added to the vacuum pump currently in use.

2. Standard of vacuum degree (Photo 2)

Use a vacuum pump that attains 0.5Torr(65Pa) or lower degree of vacuum after 5 minutes of operation, and connect it directly
to the vacuum gauge. Use a pump well-maintained with an appropriate lubricant. A poorly maintained vacuum pump may not
be able to attain the desired degree of vacuum.

3. Required precision of vacuum gauge

Use a vacuum gauge that registers a vacuum degree of 5Torr(650Pa) and measures at intervals of 1Torr(130Pa). (A recom­mended vacuum gauge is shown in Photo2.)
Do not use a commonly used gauge manifold because it cannot register a vacuum degree of 5Torr(650Pa).

4. Evacuation time

After the degree of vacuum has reached 5Torr(650Pa), evacuate for an additional 1 hour. (A thorough vacuum drying re-

moves moisture in the pipes.)

Verify that the vacuum degree has not risen by more than 1Torr(130Pa) 1hour after evacuation. A rise by less than

1Torr(130Pa) is acceptable.

If the vacuum is lost by more than 1Torr(130Pa), conduct evacuation, following the instructions in section 6. Special vacuum

drying.

5. Procedures for stopping vacuum pump

To prevent the reverse flow of vacuum pump oil, open the relief valve on the vacuum pump side, or draw in air by loosening
the charge hose, and then stop the operation.
The same procedures should be followed when stopping a vacuum pump with a reverse-flow check valve.

6. Special vacuum drying

When 5Torr(650Pa) or lower degree of vacuum cannot be attained after 3 hours of evacuation, it is likely that water has pen-

etrated the system or that there is a leak.

If water infiltrates the system, break the vacuum with nitrogen. Pressurize the system with nitrogen gas to

0.5kgf/cm

2

G(0.05MPa) and evacuate again. Repeat this cycle of pressurizing and evacuation either until the degree of vac-

uum below 5Torr(650Pa) is attained or until the pressure stops rising.

Only use nitrogen gas for vacuum breaking. (The use of oxygen may result in an explosion.)

HWE1116D GB

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[ I Read Before Servicing ]







7. Triple Evacuation

The method below can also be used to evacuate the system.

Evacuate the system to 4,000 microns from both service valves. System manifold gauges must not be used to measure vac-

uum. A micron gauge must be used at all times. Break the vacuum with Nitrogen (N2) into the discharge service valve to 0
PSIG.

Evacuate the system to 1,500 microns from the suction service valve. Break the vacuum with Nitrogen (N2) into the discharge

service valve to 0 PSIG.

Evacuate the system to 500 microns. System must hold the vacuum at 500 microns for a minimum of 1 hour.
Conduct a rise test for a minimum of 30 minutes

8. Notes

To evacuate air from the entire system
Applying a vacuum through the check joints at the refrigerant service valve on the high and low pressure sides (BV1
and 2) is not enough to attain the desired vacuum pressure.
Be sure to apply a vacuum through the check joints at the refrigerant service valve on the high and low pressure
sides (BV1 and 2) and also through the check joints on the high and low pressure sides (CJ1 and 2).

To evacuate air only from the outdoor units
Apply a vacuum through the check joints on the high and low pressure sides (CJ1, and 2).

To evacuate air from the indoor units and extension pipes
Apply a vacuum through the check joints at the refrigerant service valve on the high and low pressure sides (BV1
and 2).

HWE1116D GB

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[ I Read Before Servicing ]

[9] Refrigerant Charging

Cylinder with a siphon

Cylinder without a siphon

Cylin-

Cylin-

der

der

Cylinder color R410A is pink. Refrigerant charging in the liquid state

Valve Valve

liquid

liquid

1. Reasons

R410A is a pseudo-azeotropic HFC blend (boiling point R32=-52°C[-62°F], R125=-49°C[-52°F]) and can almost be handled
the same way as a single refrigerant, such as R22. To be safe, however, draw out the refrigerant from the cylinder in the liquid
phase. If the refrigerant in the gaseous phase is drawn out, the composition of the remaining refrigerant will change and be­come unsuitable for use.

2. Notes

When using a cylinder with a siphon, refrigerant is charged in the liquid state without the need for turning it upside down. Check
the type of the cylinder on the label before use.

[10] Remedies to be taken in case of a Refrigerant Leak

If the refrigerant leaks out, it may be replenished. The entire refrigerant does not need to be replaced. (Charge refrigerant in the
liquid state.)
Refer to "IX [5] Refrigerant Leak."(page 338)

HWE1116D GB

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[ I Read Before Servicing ]

[11] Characteristics of the Conventional and the New Refrigerants

1. Chemical property

As with R22, the new refrigerant (R410A) is low in toxicity and chemically stable nonflammable refrigerant.
However, because the specific gravity of vapor refrigerant is greater than that of air, leaked refrigerant in a closed room will
accumulate at the bottom of the room and may cause hypoxia.
If exposed to an open flame, refrigerant will generate poisonous gases. Do not perform installation or service work in a con­fined area.

New Refrigerant (HFC type) Conventional Refriger-

ant (HCFC type)

R410A R407C R22

R32/R125 R32/R125/R134a R22

Composition (wt%) (50/50) (23/25/52) (100)

Type of Refrigerant Pseudo-azeotropic

Refrigerant

Non-azeotropic

Refrigerant

Single Refrigerant

Chloride Not included Not included Included

Safety Class A1/A1 A1/A1 A1

Molecular Weight 72.6 86.2 86.5

Boiling Point (°C/°F) -51.4/-60.5 -43.6/-46.4 -40.8/-41.4

Steam Pressure

1.557/226 0.9177/133 0.94/136

(25°C,MPa/77°F,psi) (gauge)

Saturated Steam Density
(25°C,kg/m

3

/77°F,psi)

64.0 42.5 44.4

Flammability Nonflammable Nonflammable Nonflammable

Ozone Depletion Coefficient (ODP)

Global Warming Coefficient (GWP)

Refrigerant Charging Method Refrigerant charging in

Replenishment of Refrigerant after a Refrigerant

*1

*2

0 0 0.055

1730 1530 1700

the liquid state

Refrigerant charging in

the liquid state

Refrigerant charging in

the gaseous state

Available Available Available

Leak

*1 When CFC11 is used as a reference
*2 When CO

is used as a reference

2

2. Refrigerant composition

R410A is a pseudo-azeotropic HFC blend and can almost be handled the same way as a single refrigerant, such as R22. To
be safe, however, draw out the refrigerant from the cylinder in the liquid phase. If the refrigerant in the gaseous phase is drawn
out, the composition of the remaining refrigerant will change and become unsuitable for use.
If the refrigerant leaks out, it may be replenished. The entire refrigerant does not need to be replaced.

3. Pressure characteristics

The pressure in the system using R410A is 1.6 times as great as that in the system using R22.

Pressure (gauge)

Temperature (°C/°F)

R410A R407C R22

MPa/psi MPa/psi MPa/psi

-20/-4 0.30/44 0.18/26 0.14/20

0/32 0.70/102 0.47/68 0.40/58

20/68 1.34/194 0.94/136 0.81/117

40/104 2.31/335 1.44/209 1.44/209

60/140 3.73/541 2.44/354 2.33/338

65/149 4.17/605 2.75/399 2.60/377

HWE1116D GB

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[ I Read Before Servicing ]

[12] Notes on Refrigerating Machine Oil

1. Refrigerating machine oil in the HFC refrigerant system

HFC type refrigerants use a refrigerating machine oil different from that used in the R22 system.
Note that the ester oil used in the system has properties that are different from commercially available ester oil.

Refrigerant Refrigerating machine oil

R22 Mineral oil

R407C Ester oil

R410A Ester oil

2. Effects of contaminants

*1

Refrigerating machine oil used in the HFC system must be handled with special care to keep contaminants out.
The table below shows the effect of contaminants in the refrigerating machine oil on the refrigeration cycle.

3. The effects of contaminants in the refrigerating machine oil on the refrigeration cycle.

Cause Symptoms Effects on the refrigerant cycle

Water infiltration Frozen expansion valve

and capillary tubes

Clogged expansion valve and capillary tubes
Poor cooling performance
Compressor overheat
Motor insulation failure
Burnt motor
Coppering of the orbiting scroll
Lock
Burn-in on the orbiting scroll

Clogged expansion valve, capillary tubes, and
drier

Hydrolysis

Air infiltration Oxidization

Adhesion to expansion valve and capillary
tubes

Sludge formation and ad­hesion
Acid generation
Oxidization
Oil degradation

Poor cooling performance

Infiltration of
contaminants

Dust, dirt

Infiltration of contaminants into the com­pressor

Compressor overheat

Burn-in on the orbiting scroll

Sludge formation and adhesion Clogged expansion valve and capillary tubes

Mineral oil
etc.

Poor cooling performance
Compressor overheat

Oil degradation Burn-in on the orbiting scroll

*1. Contaminants is defined as moisture, air, processing oil, dust/dirt, wrong types of refrigerant, and refrigerating machine oil.

HWE1116D GB

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II

Restrictions

[1] System configuration ....................................................................................................... 17

[2] Types and Maximum allowable Length of Cables ...........................................................18

[3] Switch Settings and Address Settings ............................................................................. 19

[4] Sample System Connection............................................................................................. 26

[5] An Example of a System to which an MA Remote Controller is connected..................... 28

[6] An Example of a System to which an ME Remote Controller is connected..................... 42

[7] An Example of a System to which both MA Remote Controller and ME Remote

Controller are connected.................................................................................................. 44

[8] Restrictions on Pipe Length ............................................................................................. 47

HWE1116D GB

- 15 -

HWE1116D GB

- 16 -

[ II Restrictions ]

II Restrictions

[1] System configuration

1. Table of compatible indoor units

The table below summarizes the types of indoor units that are compatible with different types of outdoor units.

Outdoor

units

Composing units Maximum total capacity

of connectable indoor

units

Maximum number
of connectable in-

door units

Types of connectable in-

door units

72 - - 36 - 108 18 P06 - P96 models

96 - - 48 - 144 24

R410A series indoor units

120 - - 60 - 180 30

144 - - 72 - 216 36

144 72 72 72 - 216 36

168 96 72 84 - 252 42

192 96 96 96 - 288 48

216 120 96 108 - 324 50

240 120 120 120 - 360 50

264 144 120 132 - 396 50

288 144 144 144 - 432 50

1) "Maximum total capacity of connectable indoor units" refers to the sum of the numeric values in the indoor unit model names.

2) If the total capacity of the indoor units that are connected to a given outdoor unit exceeds the capacity of the outdoor unit, the
indoor units will not be able to perform at the rated capacity when they are operated simultaneously. Select a combination of
units so that the total capacity of the connected indoor units is at or below the capacity of the outdoor unit whenever possible.

3) There is no P144 that consists of two P72 units in the TKMU series.

HWE1116D GB

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[ II Restrictions ]

[2] Types and Maximum allowable Length of Cables

1. Wiring work

(1) Notes

1) Have all electrical work performed by an authorized electrician according to the local regulations and instructions in this man­ual.

2) Install external transmission cables at least 5cm [1-31/32"] away from the power supply cable to avoid noise interference.
(Do not put the control cable and power supply cable in the same conduit tube.)

3) Provide grounding for the outdoor unit as required.

4) Run the cable from the electric box of the indoor or outdoor unit in such way that the box is accessible for servicing.

5) Do not connect power supply wiring to the terminal block for transmission line. Doing so will damage the electronic compo­nents on the terminal block.

6) Use 2-core shielded cables as transmission cables.
Use a separate 2-core control cable for each refrigerant system. Do not use a single multiple-core cable to connect indoor

units that belong to different refrigerant systems. The use of a multiple-core cable may result in signal transmission errors and
malfunctions.

Outdoor unit

TB3TB7TB3TB

2-core shielded cable

TB3TB7TB3TB

2-core shielded cable

7

7

BC Controller

Indoor unit

Remote Controller

Outdoor unit

TB3TB7TB3TB

TB3TB7TB3TB

BC Controller

7

multiple-core cable

7

Indoor unit

Remote Controller

TB3: Terminal block for indoor-outdoor transmission line TB7: Terminal block for centralized control

7) When extending the transmission cable, be sure to extend the shield wire.

(2) Control wiring

Different types of control wiring are used for different systems.
Refer to section "[5] An Example of a System to which an MA Remote Controller is connected - [7] An Example of a System
to which both MA Remote Controller and ME Remote Controller are connected" before performing wiring work.

Types and maximum allowable length of cables

Control lines are categorized into 2 types: transmission line and remote controller line.
Use the appropriate type of cables and observe the maximum allowable length specified for a given system. If a given system

has a long transmission line or if a noise source is located near the unit, place the unit away from the noise source to reduce
noise interference.

1) M-NET transmission line

Facility
type

Type Shielded cable CVVS, CPEVS, MVVS

Cable type

Number of
cores

Cable size Larger than 1.25mm

Maximum transmission
line distance between the
outdoor unit and the far­thest indoor unit

Maximum transmission
line distance for central­ized control and Indoor/
outdoor transmission line
(Maximum line distance

500 m [1640ft] max.
*The maximum overall line length from the power supply unit on the transmission lines for
centralized control to each outdoor unit or to the system controller is 200m [656ft] max.

via outdoor unit)

HWE1116D GB

- 18 -

All facility types

2-core cable

2

[AWG16]

200 m [656ft] max.

[ II Restrictions ]

2) Remote controller wiring

MA remote controller

*1

ME remote controller

*5

Type CVV CVV

Number of
cores

Cable type

Cable size

Maximum overall line
length

2-core cable 2-core cable

0.3 to 1.25mm
[AWG22 to 16]
(0.75 to 1.25mm2 )
[AWG18 to 16]

2 *2 *4

*3

0.3 to 1.25mm
[AWG22 to 16]
(0.75 to 1.25mm2 )
[AWG18 to 16]

The section of the cable that exceeds 10m

200 m [656ft] max.

[32ft] must be included in the maximum in­door-outdoor transmission line distance.

2 *2

*3

*1 MA remote controller refers to MA remote controller (PAR-20MAU, PAR-21MAAU, PAR-30MAAU), Simple MA Re-

mote Controller, and wireless remote controller.

*2 The use of cables that are smaller than 0.75mm

2

(AWG18) is recommended for easy handling.

*3 When connected to the terminal block on the Simple remote controller, use cables that meet the cable size specifi-

cations shown in the parenthesis.

*4 When connecting PAR-30MAAU, use a 0.3mm

2

sheathed cable.

*5 ME remote controller refers to ME remote controller and Simple ME Remote Controller.

[3] Switch Settings and Address Settings

1. Switch setting

Refer to section "[5] An Example of a System to which an MA Remote Controller is connected - [7] An Example of a System
to which both MA Remote Controller and ME Remote Controller are connected" before performing wiring work.
Set the switches while the power is turned off.
If the switch settings are changed while the unit is being powered, those changes will not take effect, and the unit will not
function properly.

Units on which to set the switches Symbol Units to which the power must be shut off

CITY MULTI indoor unit Main/sub unit IC Outdoor units

LOSSNAY, OA processing unit

*1

ME remote controller Main/sub remote

LC Outdoor units

RC Outdoor units

*3

and Indoor units

*3

and LOSSNAY

*3

controller

MA remote controller

*4

Main/sub remote

MA Indoor units

controller

CITY MULTI outdoor unit

*2

OC,OS Outdoor units

BC controller Main BC Outdoor units

Sub1, 2 BS1, BS2 Outdoor units

*3

*3

and BC controller

*3 *5

and BC controller

*1. Applicable when LOSSNAY units are connected to the indoor-outdoor transmission line.
*2. The outdoor units in the same refrigerant circuit are automatically designated as OC and OS in the order of capacity

from large to small (if two or more units have the same capacity, in the order of address from small to large).
*3. Turn off the power to all the outdoor units in the same refrigerant circuit.
*4. When a PAR-30MAAU is connected to a group, no other MA remote controllers can be connected to the same group.
*5. When setting the switch SW4 of the control board, set it with the outdoor unit power on. (Refer to VII [1] -1- (1).)

HWE1116D GB

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[ II Restrictions ]

2. M-NET Address settings
(1) Address settings table

The need for address settings and the range of address setting depend on the configuration of the system.

Unit or controller Sym-

bol

Address
setting

Setting method Factory

range

CITY MULTI
indoor unit

M-NET
adapter

M-NET con­trol interface

Free Plan
adapter

LOSSNAY, OA processing unit LC 0, 01 to

ME remote
controller

MA remote controller MA No address settings required. (The main/sub setting must be made if

CITY MULTI outdoor unit OCOS0, 51 to

Auxiliary
outdoor unit

Main/sub unit IC 0, 01 to

Main remote

RC 101 to

controller

Sub remote

RC 151 to

controller

50

50

150

200

*1 *4 *6

*1 *4 *6

*3

2 remote controllers are connected to the system.)

*1 *2

100

*6

BC controller
(main)

BC 0, 51 to

100

*6

*1 *2

Assign the smallest address to the main indoor unit in the
group, and assign sequential address numbers to the rest
of the indoor units in the same group.
In an R2 system with a sub BC controller, make the set­tings for the indoor units in the following order.
(i) Indoor unit to be connected to the main BC controller
(ii) Indoor unit to be connected to sub BC controller 1
(iii) Indoor unit to be connected to sub BC controller 2
Make the settings for the indoor units in the way that the
formula "(i) < (ii) < (iii)" is true.

Assign an arbitrary but unique address to each of these
units after assigning an address to all indoor units.

Add 100 to the smallest address of all the indoor units in
the same group.

Add 150 to the smallest address of all the indoor units in
the same group.

*7

Assign an address that equals the lowest address of the indoor

units in the same refrigerant circuit plus 50.

Assign sequential addresses to the outdoor units in the same re-

frigerant circuit. The outdoor units in the same refrigerant circuit
are automatically designated as OC and OS.

*5

Assign an address that equals the address of the outdoor

unit in the same refrigerant system plus 1.

If a given address overlaps any of the addresses that are

assigned to the outdoor units or to the sub BC controller,
use a different, unused address within the setting range.

BC controller
(sub1, 2)

BS1
BS2

51 to
100

Assign an address to both the sub BC controller 1 and 2

*2

that equals the lowest address of the indoor units that
are connected to each of them plus 50.

If a sub BC controller is connected, the automatic startup

function is not available.

address

setting

00

00

101

Main

00

00

*1. If a given address overlaps any of the addresses that are assigned to other units, use a different, unused address within the

setting range.

*2. To set the outdoor unit address or the auxiliary outdoor unit address to "100," set the rotary switches to "50."

*3. To set the ME remote controller address to "200," set the rotary switches to "00."
*4. Some models of indoor units have two or three control boards.

Assign an address to the No.1, No. 2, and No. 3 control boards so that the No. 2 control board address equals the No. 1 control board
address plus 1, and that the No. 3 control board address equals the No. 1 control board address plus 2.

*5. The outdoor units in the same refrigerant circuit are automatically designated as OC, and OS. They are designated as OC, and OS in

the descending order of capacity (ascending order of address if the capacities are the same).

*6. No address settings are required for units in a system with a single outdoor unit (with some exceptions).

Address setting is required if a sub BC controller is connected.

*7. When a PAR-30MAAU is connected to a group, no other MA remote controllers can be connected to the same group.

HWE1116D GB

- 20 -

[ II Restrictions ]

System
controller

Unit or controller Sym-

bol

Group remote con-

GRSC201 to

troller

System remote con­troller

ON/OFF remote con­troller

SR
SC

AN
SC

Schedule timer (com­patible with M-NET)STSC

Central controller

TRSC000
AG-150A
G(B)-50A
GB-24A

Expansion controller

TR 000
PAC-YG50ECA

BM adapter

SC 000
BAC-HD150

LM adapter

SC 201 to
LMAP03U

Address
setting
range

250

201 to
250

201 to
250

201 to
250

250

Setting method Factory

Assign an address that equals the sum of the smallest
group number of the group to be controlled and 200.

Assign an arbitrary but unique address within the range
listed on the left to each unit.

Assign an address that equals the sum of the smallest
group number of the group to be controlled and 200.

Assign an arbitrary but unique address within the range
listed on the left to each unit.

Assign an arbitrary but unique address within the range
listed on the left to each unit. The address must be set to
"000" to control the K-control unit.

Assign an arbitrary but unique address within the range
listed on the left to each unit. The address must be set to
"000" to control the K-control unit.

Assign an arbitrary but unique address within the range
listed on the left to each unit. The address must be set to
"000" to control the K-control unit.

Assign an arbitrary but unique address within the range
listed on the left to each unit.

address

setting

201

202

000

000

000

247

HWE1116D GB

- 21 -

[ II Restrictions ]

(2) Power supply switch connector connection on the outdoor unit

(Factory setting: The male power supply switch connector is connected to CN41.)

There are limitations on the total number of units that are connectable to each refrigerant system. Refer to the System Design
Manual for details.

System configura­tion

Connection to
the system con­troller

Power supply unit
for transmission
lines

Group operation
of units in a sys­tem with multiple

Power supply switch connector connection

outdoor units

System with one
outdoor unit

System with multi­ple outdoor units

_ _ _ Leave CN41 as it is

(Factory setting)

Not connected _ Not grouped

Grouped Disconnect the male connector from the fe-

With connection
to the indoor
unit system

With connection
to the central­ized control sys­tem

Not required Grouped/not

grouped

Not required
(Powered from

*1

Grouped/not
grouped

the outdoor unit)

Required *1 Grouped/not

grouped

male power supply switch connector (CN41)
and connect it to the female power supply
switch connector (CN40) on only one of the
outdoor units.

*Connect the S (shielded) terminal on the

terminal block (TB7) on the outdoor unit
whose CN41 was replaced with CN40 to
the ground terminal ( ) on the electric box.

Leave CN41 as it is
(Factory setting)

*2

*1 The need for a power supply unit for transmission lines depends on the system configuration.
*2 The replacement of the power jumper connector from CN41 to CN40 must be performed on only one outdoor unit in the

system.

(3) Settings for the centralized control switch for the outdoor unit (Factory setting: SW5-1 is set to OFF.)

System configuration Centralized control switch settings

*1

Connection to the system controller Not connected Leave it to OFF. (Factory setting)

Connection to the system controller Connected

*2

ON

*1. Set SW5-1 on all outdoor units in the same refrigerant circuit to the same setting.
*2. When only the LM adapter is connected, leave SW5-1 to OFF (as it is).

(4) Selecting the position of temperature detection for the indoor unit (Factory setting: SW1-1 set to "OFF".)

To stop the fan during heating Thermo-OFF (SW1-7 and 1-8 on the indoor units to be set to ON), use the built-in thermistor
on the remote controller or an optional thermistor.

1) To use the built-in sensor on the remote controller, set the SW1-1 to ON.
Some models of remote controllers are not equipped with a built-in temperature sensor.

Use the built-in temperature sensor on the indoor unit instead.

When using the built-in sensor on the remote controller, install the remote controller where room temperature can be detected.

(Note) Factory setting for SW1-1 on the indoor unit of the All-Fresh Models is ON.

2) When an optional temperature sensor is used, set SW1-1 to OFF, and set SW3-8 to ON.
When using an optional temperature sensor, install it where room temperature can be detected.

(5) Various start-stop controls (Indoor unit settings)

Each indoor unit (or group of indoor units) can be controlled individually by setting SW 1-9 and 1-10.

Function

Power ON/OFF by the

*1,*2,*3

plug

Automatic restoration
after power failure

Operation of the indoor unit when the operation is resumed after the unit

was stopped

Indoor unit will go into operation regardless of its operation status before
power off (power failure). (In approx. 5 minutes)

Indoor unit will go into operation if it was in operation when the power was
turned off (or cut off due to power failure). (In approx. 5 minutes)

Indoor unit will remain stopped regardless of its operation status before

Setting (SW1)

910

OFF ON

ON OFF

OFF OFF

power off (power failure).

*1. Do not cut off power to the outdoor unit. Cutting off the power supply to the outdoor unit will cut off the power supply to the

belt heater and may cause the compressor to malfunction when the unit is put back into operation.
*2. Not applicable to units with a built-in drain pump or humidifier.
*3. Models with a built-in drain pump cannot be turned on/off by the plug individually. All the units in the same refrigerant cir-

cuits will be turned on or off by the plug.
*4. Requires that the dipswitch settings for all the units in the group be made.
*5. To control the external input to and output from the air conditioners with the PLC software for general equipment via the

G(B)-50A, set SW1-9 and SW1-10 to ON. With these settings made, the power start-stop function becomes disabled. To

use the auto recovery function after power failure while these settings are made, set SW1-5 to ON.

*4 *5

HWE1116D GB

- 22 -

[ II Restrictions ]

CAUTION

(6) Miscellaneous settings

Cooling-only setting for the indoor unit: Cooling only model (Factory setting: SW3-1 "OFF.")
When using indoor unit as a cooling-only unit, set SW3-1 to ON.

(7) Various types of control using input-output signal connector on the outdoor unit (various connection options)

Type Usage Function

Input Prohibiting cooling/heating operation (thermo OFF) by an external

DEMAND (level) CN3D

input to the outdoor unit.

Performs a low level noise operation of the outdoor unit by an ex­ternal input to the outdoor unit.

Low-noise mode

*3 *4

(level)

Terminal

to be

*1

used

*2

Option

Adapter for
external input
(PAC­SC36NA-E)

* It can be used as the silent operation device for each refrigerant
system.

Forces the outdoor unit to perform a fan operation by receiving sig­nals from the snow sensor.

*5

Cooling/heating operation can be changed by an external input to

Snow sensor signal
input (level)

Auto-changeover CN3N

CN3S

the outdoor unit.

Out-

How to extract signals from the outdoor unit

put

*It can be used as an operation status display device.
*It can be used for an interlock operation with external devices.

Operation status of
the compressor

Error status

*5

*6

CN51 Adapter for

external out­put
(PAC­SC37SA-E)

*1. For detailed drawing, refer to "Example of wiring connection".

*2. For details, refer to section (4) on the next page, and section (8) Demand control for further details.

*3. Low-noise mode is valid when Dip SW6-8 on the outdoor unit is set to OFF. When DIP SW6-8 is set to ON, 4 levels of

on-DEMAND are possible, using different configurations of low-noise mode input and DEMAND input settings. When 2
or more outdoor units exist in one refrigerant circuit system, 8 levels of on-DEMAND are possible.

*4. By setting Dip SW6-7, the Low-noise mode can be switched between the Capacity priority mode and the Low-noise pri-

ority mode.
When SW6-7 is set to ON: The low-noise mode always remains effective.
When SW6-7 is set to OFF: The low noise mode is cancelled when certain outside temperature or pressure criteria are
met, and the unit goes into normal operation (capacity priority mode).

Low-noise mod is effective. Capacity priority mode becomes effective.

Cooling Heating Cooling Heating

TH7<30°C[86°F] and
63HS1<32kg/cm

2

TH7>3°C[37°F] and
63LS>4.6kg/cm

2

TH7>35°C[95°F] or
63HS1>35kg/cm

2

TH7<0°C[32°F] or
63LS<3.9kg/cm

*5. Each outdoor unit in the system with multiple outdoor units requires the signal input/output setting to be made.
*6. Take out signals from the outdoor unit (OC) if multiple outdoor units exist in a single system.

1) Wiring should be covered by insulation tube with supplementary insulation.

2) Use relays or switches with IEC or equivalent standard.

3) The electric strength between accessible parts and control circuit should have 2750V or more.

2

HWE1116D GB

- 23 -

[ II Restrictions ]

Example of wiring connection

(1) CN51

Distant control
board

ecruos rewop pmaL

1

L

L

2

L1 : Outdoor unit error display lamp
L2 : Compressor operation lamp (compressor running state)
X, Y : Relay (coil =<0.9W : DC12V)

1. Optional part : PAC-SC37SA-E or field supply.

Relay circuit Adapter

X

Y

Y

X

Preparations

in the field

Maximum cable
length is 10m

1

5
4
3

(3) CN3N

Relay circuit

X

Y

Preparations

in the field

Adapter

2

1
2

3

Maximum cable
length is 10m

Outdoor unit
control board

CN3N

Y

X : Cooling / Heating
Y : Validity / Invalidity of X
X,Y : Relay

2. Optional part : PAC-SC36NA-E or field supply.

(2) CN3S

Relay circuit

Outdoor unit
control board

CN51

Preparations

in the field

X : Relay

Snow sensor : The outdoor fan runs when X is closed

2. Optional part : PAC-SC36NA-E or field supply.

X

OFF

OFF

ON

Normal

CoolingONHeating

Contact rating voltage >= DC15V
Contact rating current >= 0.1A
Minimum applicable load =< 1mA at DC

1
2

Outdoor unit
control board

CN3S

Adapter 2

X

3

Maximum cable
length is 10m

Contact rating voltage >= DC15V
Contact rating current >= 0.1A
Minimum applicable load =< 1mA at DC

in stop mode or thermostat mode.

(4) CN3D

Relay circuit

Adapter

X

Y

1
2

3

Outdoor unit

2

control board

CN3D

Preparations

in the field

Maximum cable

X : Low-noise mode

length is 10m

Y : Compressor ON/OFF
X,Y : Relay

2. Optional part : PAC-SC36NA-E or field supply.

Contact rating voltage >= DC15V
Contact rating current >= 0.1A
Minimum appicable load =< 1mA at DC

1
2

Outdoor unit

2

control board

CN3D

Relay circuit

X

Adapter

3

Preparations

in the field

X : Low-noise mode
X : Relay

Maximum cable
length is 10m

Contact rating voltage >= DC15V
Contact rating current >= 0.1A
Minimum applicable load =< 1mA at DC

2. Optional part : PAC-SC36NA-E or field supply.

Low-noise mode : The noise level is reduced by controlling the maximum

fan frequency and maximum compressor frequency.

HWE1116D GB

- 24 -

[ II Restrictions ]

(8) Demand control

1) General outline of control

Demand control is performed by using the external signal input to the 1-2 and 1-3 pins of CN3D on the outdoor units (OC and OS).
Between 2 and 8 steps of demand control is possible by setting Dip SW6-8 on the outdoor units (OC and OS).

No Demand control switch

Dip SW6-8

Input to CN3D*

2

OC OS

1 2 steps (0-100%) OFF OFF OC

2

ON OFF OC

4 steps (0-50-75-100%)

3OFFONOS

8 steps

4

(0-25-38-50-63-75-88-100%)

*1 Available demand functions

P72-P144T(Y)KMU-A models (single-outdoor-unit system) : 2 and 4 steps shown in the rows 1 and 2 in the table above only.
P144-P288T(Y)SKMU-A models (two-outdoor-unit system OC+OS) : 2-8 steps shown in the rows 1, 2, 3, and 4 in the table
above only.

*2 Signal is input to CN3D on the outdoor unit whose SW6-8 is set to ON. When SW6-8 is set to OFF on all outdoor units, the

signal is input to the CN3D on the OC.
Outdoor units whose SW6-8 is set to ON are selectable in a single refrigerant system.

*3 If wrong sequence of steps are taken, the units may go into the Thermo-OFF (compressor stop) mode.

Ex) When switching from 100% to 50%
(Incorrect) 100%0%50% The units may go into the Thermo-OFF mode.
(Correct) 100%75%50%

*4 The percentage of the demand listed in the table above is an approximate value based on the compressor volume and does

not necessarily correspond with the actual capacity.

*5 Notes on using demand control in combination with the low-noise mode

To enable the low-noise mode, it is necessary to short-circuit 1-2 pin of CN3D on the outdoor unit whose SW6-8 is set to OFF.
When SW6-8 is set to ON on all outdoor units, the following operations cannot be performed.

Performing 4-step demand in combination with the low-noise operation in a single-outdoor-unit system.
Performing 8-step demand in combination with the low-noise operation in a two-outdoor-unit system.

ON ON OC and OS

2) Contact input and control content

2-step demand control

The same control as the Thermo-OFF is performed by closing 1-3 pin of CN3D.

CN3D

1-3

Open 100%

Close 0%

4-step demand control (When SW6-8 is set to ON on an outdoor unit)

Demand capacity is shown below.

CN3D 1-2P

1-3P Open Close

Open 100% 75%

Close 0% 50%

8-step demand control (When SW6-8 is set to ON on two outdoor units)

Demand capacity is shown below.

8-step demand No.2 CN3D

1-2P Open Close

No.1 CN3D 1-2P 1-3P Open Close Open Close

Open Open 100% 50% 88% 75%

Close 50% 0% 38% 25%

Close Open 88% 38% 75% 63%

Close 75% 25% 63% 50%

*1. The outdoor units whose SW6-8 is set to ON are designated as No. 1 and No. 2 in the order of address from small to large.

Ex) When outdoor units whose SW6-8 is set to ON are designated as OC and OS, OC=No. 1 and OS=No. 2.

HWE1116D GB

- 25 -

[ II Restrictions ]

[4] Sample System Connection

Examples of typical system connection are shown on pages [5] to [7].
Refer to the Installation Manual that came with each device or controller for details.

(1) An example of a system to which an MA remote controller is connected

System

configuration

System with one out-

1

2

door unit

System with one out-

door unit

Connection to the system controller

NO

NO

Address start up for in-

door and outdoor units

Grouping of units in a

3

system with multiple

NO

outdoor units

System with one out-

4

5

6

door unit

System with one out-

door unit

System with one out-

door unit

With connection to transmission line

for centralized control

With connection to indoor-outdoor

transmission line

With connection to transmission line

for centralized control

(2) An example of a system to which an ME remote controller is connected

System

configuration

System with one out-

1

door unit

Connection to the system controller

With connection to transmission line

for centralized control

Address start up for indoor

Automatic

address setup

Manual

address setup

Manual

address setup

Manual

address setup

Manual

address setup

Manual

address setup

and outdoor units

Manual

address setup

Notes

Connection of
multiple LOSS­NAY units

Connection of
multiple LOSS­NAY units

Notes

(3) An example of a system to which both MA remote controller and ME remote controller are connected

System

configuration

System with one out-

1

door unit

Connection to the system controller

With connection to transmission

line for centralized control

Address start up for in­door and outdoor units

Manual

address setup

Notes

*MA remote controller and ME remote controller cannot both be connected to the same group.

HWE1116D GB

- 26 -

[ II Restrictions ]

HWE1116D GB

- 27 -

[ II Restrictions ]

[5] An Example of a System to which an MA Remote Controller is connected

1. System with one outdoor unit (automatic address setup for both indoor and outdoor units)
(1) Sample control wiring

Leave the male
connector on
CN41 as it is.
SW5-1 OFF

OS

00

TB3

M1 M2 M1 M2 M1 M2

TB7

S

Leave the male
connector on
CN41 as it is.
SW5-1 OFF

OC

00

TB3

M1 M2

TB7

L3L1 L2

BC

00

TB02

S

M1 M2

S

M1

TB5

M2

IC

00

S

L4 L5

15

TB

12

m1

GroupGroup

00

TB5STB

M1

M2

IC

15

12

Interlock operation with
the ventilation unit

LC

00

TB5

M1

M2

S

*1

S

M1 M2

TB02

00

BS

*1. When BS is connected to the system,
automatic address setup is not available.

L11

m4

A1 B2

MA

(2) Cautions

1) ME remote controller and MA remote controller cannot both
be connected to the same group of indoor units.

2) No more than 2 MA remote controllers can be connected to
a group of indoor units. It is not possible to connect a pair of
PAR-30MAAU.

3) When the number of the connected indoor units is as shown
in the table below, one or more transmission boosters (sold
separately) are required.
To connect two transmission boosters, connect them in par­allel. (Observe the maximum number of connectable indoor
units that are listed in the specifications for each outdoor
unit.)

Number of transmission
booster (sold separately) re­quired

1 unit 2 units

When the P72 and P96 models
are not included in the connect­ed indoor units

When the P72 and P96 models
are included in the connected
indoor units

27 - 50 units -

21 - 39 units 40 - 50 units

The table above shows the number of transmission boost-

ers that is required by the system with three BC controllers.
For each BC controller that is subtracted from the above­mentioned system, two additional indoor units can be con­nected.

M1

A1 B2

MA

TB5

M2

A1 B2

MA

L12 L13

IC

TB

15

12

S

m5

A1 B2

MA

A1 B2

RC

GroupGroup

0000

TB5STB

M1

M2

IC

A1 B2

15

12

A1 B2

MA

MA

IC

00

15

TB5STB

M1

M2

12

m2

m3

4) Automatic address setup is not available if start-stop in­put(CN32, CN51, CN41) is used for a group operation of in­door units. Refer to "[5] 2. Manual address setup for both
indoor and outdoor units"(page 30)

5) To connect more than 2 LOSSNAY units to indoor units in
the same system, refer to "[5] 2. An example of a system
with one outdoor unit to which 2 or more LOSSNAY units are
connected".(page 30)

(3) Maximum allowable length

1) Indoor/outdoor transmission line

2

Maximum distance (1.25mm

[AWG16] or larger)
L1 +L2+L3+L4+L5 200m[656ft]
L1 +L2+L3+L11+L12+L13 200m[656ft]

2) Transmission line for centralized control
No connection is required.

3) MA remote controller wiring
Maximum overall line length

(0.3 to 1.25mm

2

[AWG22 to 16])
m1 200m [656ft]
m2+m3 200m [656ft]
m4+m5 200m [656ft]
*When connected to the terminal block on the Simple re­mote controller, use cables that meet the following cable
size specifications: 0.75 - 1.25 mm

2

[AWG18-14].
*When connecting PAR-30MAAU, use a 0.3 mm
sheathed cable.

2

- 28 -

GBHWE1116D

[ II Restrictions ]

(4) Wiring method

1) Indoor/outdoor transmission line
Daisy-chain terminals M1 and M2 of the terminal block

for indoor-outdoor transmission line (TB3) on the outdoor
units (OC and OS), of the terminal block for indoor-out­door transmission line (TB02) on the main BC controller
(BC), and of the terminal block for indoor-outdoor trans­mission line (TB5) on each indoor unit (IC). (Non-polar­ized two-wire)

Only use shielded cables.

The outdoor units in the same refrigerant circuit are au­tomatically designated as OC and OS in the order of ca­pacity from large to small (if two or more units have the
same capacity, in the order of address from small to
large).

Shielded cable connection

Daisy-chain the ground terminal ( ) on the outdoor
units (OC and OS), the S terminal of the terminal block
(TB02) on the BC controller (BC), and the S terminal of
the terminal block (TB5) on the indoor unit (IC) with the
shield of the shielded cable.

2) Transmission line for centralized control
No connection is required.

3) MA remote controller wiring
Connect terminals 1 and 2 on the terminal block for MA

remote controller line (TB15) on the indoor unit (IC) to the
terminal block on the MA remote controller (MA).
(Non-polarized two-wire)

When 2 remote controllers are connected to the sys­tem

When 2 remote controllers are connected to the system,
connect terminals 1 and 2 of the terminal block (TB15) on
the indoor unit (IC) to the terminal block on the two MA
remote controllers.

Set one of the MA remote controllers as a sub controller.

(Refer to the Instruction Manual for the MA remote con­troller for the setting method.)

Group operation of indoor units

To perform a group operation of indoor units (IC), daisy­chain terminals 1 and 2 on the terminal block (TB15) on
all indoor units (IC) in the same group, and then connect
terminals 1 and 2 on the terminal block (TB15) on the in­door unit on one end to the terminal block on the MA re­motecontroller. (Non-polarized two-wire)

When performing a group operation of indoor units that

have different functions, "Automatic indoor/outdoor ad­dresssetup" is not available.

4) LOSSNAY connection
Connect terminals M1 and M2 on the terminal

block(TB5) on the indoor unit (IC) to the appropriate ter­minals on the terminal block (TB5) on LOSSNAY (LC).
(Non-polarized two-wire)

Interlock operation setting with all the indoor units in the

same system will automatically be made. (It is required
that the Lossnay unit be turned on before the outdoo­runit.)

When performing an interlocked operation of part of the

indoor units in the system with a LOSSNAY unit, using a
LOSSNAY unit alone without interlocking it with any
units, performing an interlock operation of more than 16
indoor units with a LOSSNAY unit, or connecting two or
more LOSSNAY units to the same refrigerant system,
the automatic IC/OC address setup function is not
available.(page 30)

5) Switch setting
No address settings required.

(5) Address setting method

Proce-

dures

Unit or controller

1 Indoor unit Main unit IC No settings

2 LOSSNAY LC No settings

3MA

remote con­troller

4 Outdoor unit OCOSNo settings

5 Auxiliary

outdoor unit

Sub unit IC

Main

MA No settings
remote con­troller

Sub

MA Sub
remote con­troller

BC

BC No settings
controller

Address set-

ting range

required.

required.

required.

remote con­troller

required.

required.

Setting method Notes

- Port number setting is re-

Factory

setting

00
quired
To perform a group opera­tion of indoor units that fea­ture different functions, the
automatic IC/OC address
setup function is not avail­able.

-00

- It is not possible to connect a

Main

pair of PAR-30MAAU.

Settings to be
made with the
Sub/Main
switch

-00

-00

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
They are designated as OC and OS in the descending order of capacity (ascending order of address if the capacities are the
same).

HWE1116D GB

29- 29 -

[ II Restrictions ]

2. An example of a system with one outdoor unit to which 2 or more LOSSNAY units are connected
(manual address setup for both indoor and outdoor units)

(1) Sample control wiring

Interlock operation with the ventilation unit

Leave the male
connector on
CN41 as it is.
SW5-1 OFF

OS

52

TB3

M1 M2

L1 L2

Leave the male
connector on
CN41 as it is.
SW5-1 OFF

TB7

M1 M2

S

TB3

M1 M2

L3

OC

51

TB7

M1 M2

S

BC

TB02

M1 M2

IC

53

S

01

TB5STB

M1M2 M1M2 M1 M2

L4 L5

GroupGroup

15

12

m1

IC

02

TB5STB

15

12

TB5

LC

05

S

M1 M2

TB02

57

BS

A1 B2

MA

S

L11

Group

TB5

IC

S

IC

L12 L13

15

TB

12

m2

A1 B2

MA

m3

IC

0403

TB5STB

IC

A1 B2

MA

15

12

LC

06

TB5

M1M2M1M2M1M2

S

0807

TB5

15

TB

S

12

A1 B2

M1M2M1M2

TB5STB

15

12

A1 B2

(2) Cautions

1) ME remote controller and MA remote controller cannot both be
connected to the same group of indoor units.

2) No more than 2 MA remote controllers can be connected to a
group of indoor units. It is not possible to connect a pair of PAR­30MAAU.

3) When the number of the connected indoor units is as shown in
the table below, one or more transmission boosters (sold sepa­rately) are required.
To connect two transmission boosters, connect them in parallel.
(Observe the maximum number of connectable indoor units that
are listed in the specifications for each outdoor unit.)

When the P72 and P96 models are not in­cluded in the connected indoor units

When the P72 and P96 models are includ­ed in the connected indoor units

* If the BC address overlaps any of the addresses that are assigned to either the OC, OS, or BS, use a different, unused address.
OC, OS, and BS addresses (lowest indoor unit address in the group plus +50) have higher priority than the BS address.

MA

MA

The table above shows the number of transmission boost-

ers that is required by the system with three BC controllers.
For each BC controller that is subtracted from the above­mentioned system, two additional indoor units can be con­nected.

Refer to the DATABOOK for further information about how

many booster units are required for a given system.

(3) Maximum allowable length

1) Indoor/outdoor transmission line
Same as [5] 1.

2) Transmission line for centralized control
No connection is required.

Number of transmission
booster (sold separately)
required

1 unit 2 units

27 - 50
units

21 - 39
units

40 - 50
units

-

3) MA remote controller wiring
Same as [5] 1.

- 30 -

GBHWE1116D

[ II Restrictions ]

(4) Wiring method

1) Indoor/outdoor transmission line
Daisy-chain terminals M1 and M2 of the terminal block

for indoor-outdoor transmission line (TB3) on the outdoor
units (OC and OS), of the terminal block for indoor-out­door transmission line (TB02) on the main and sub BC
controllers (BC and BS), and of the terminal block for in­door-outdoor transmission line (TB5) on each indoor unit
(IC). (Non-polarized two-wire)

Only use shielded cables.

The outdoor units in the same refrigerant circuit are au­tomatically designated as OC and OS in the order of ca­pacity from large to small (if two or more units have the
same capacity, in the order of address from small to
large).

Shielded cable connection

Daisy-chain the ground terminal ( ) on the outdoor
units (OC and OS), the S terminal of the terminal block
(TB02) on BC and BS, and the S terminal of the terminal
block (TB5) on the indoor unit (IC) with the shield of the
shielded cable.

(5) Address setting method

Proce-

dures

1 Indoor

Unit or controller

Main unit IC 01 to 50

Address

setting

range

unit

Sub unit

2 LOSSNAY LC 01 to 50

3MA

remote
controller

Main
remote
controller

Sub
remote
controller

MA No set-

tings re­quired.

MA Sub

remote
controller

4 Outdoor unit OCOS51 to 100

5 Auxiliary

outdoor

BCcon­troller (Sub)

BS 51 to 100

unit

BC control­ler (Main)

BC OC (or OS if it exists) +1

2) Transmission line for centralized control
No connection is required.

3) MA remote controller wiring
Same as [5] 1.

When 2 remote controllers are connected to the sys­tem

Same as [5] 1.

Group operation of indoor units

Same as [5] 1.

4) LOSSNAY connection
Connect terminals M1 and M2 on the terminal block

(TB5) on the indoor unit (IC) to the appropriate terminals
on the terminal block (TB5) on LOSSNAY (LC). (Non-po­larized two-wire)

Interlock setting between the indoor units and LOSS-

NAY units must be entered on the remote controller. (Re­fer to "IV [3] Interlock Settings via the MA Remote
Controller(page 94)" or the installation manual for the
MA remote controller for the setting method.)

5) Switch setting
Address setting is required as follows.

Setting method Notes

Assign the smallest address to the main

unit in the group.

In a system with a sub BC controller,

make the settings for the indoor units in
the following order.

(i) Indoor unit to be connected to the main

BC controller

(ii) Indoor unit to be connected to sub BC

controller 1

(iii) Indoor unit to be connected to sub BC

controller 2
Make the settings for the indoor units in
the way that the formula "(i) < (ii) < (iii)"
is true.

Assign sequential numbers starting with
the address of the main unit in the same
group +1. (Main unit address +1, main unit
address +2, main unit address +3, etc.)

Assign an arbitrary but unique address to
each of these units after assigning an ad­dress to all indoor units.

- It is not possible to con-

Settings to be made with the Sub/
Main switch

Assign sequential address to the out door

units in the same refrigerant circuit.

The outdoor units are automatically des-

ignated as OC and OS.(Note)

Assign an address that equals the sum of
the smallest address of the indoor units
that are connected to the sub BC controller
and 50.

Port number setting is

required

To perform a group op-

eration of indoor units
that feature different
functions, designate
the indoor unit in the
group with the greatest
number of functions as
the main unit.

None of these addresses may
overlap any of the indoor unit
addresses.

nect a pair of PAR­30MAAU.

To set the address to 100,

set the rotary switches to 50.

If the addresses that is as-

signed to the main BC con­troller overlaps any of the
addresses that are assigned
to the outdoor units or to the
sub BC controller, use a dif­ferent, unused address with­in the setting range.

The use of a sub BC control-

ler requires the connection
of a main BC controller.

Fac-

tory
set­ting

00

00

Main

00

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
They are designated as OC and OS in the descending order of capacity (ascending order of address if the capacities are the
same).

HWE1116D GB

31- 31 -

[ II Restrictions ]

3. Group operation of units in a system with multiple outdoor units
(1) Sample control wiring

L12

IC

01

15

12

m2

A1 B2

Leave the male
connector on
CN41 as it is.
SW5-1 OFF

OS

52

TB3

M1 M2

TB7

M1 M2

S

L11

Move the male connector
from CN41 to CN40.

SW5-1 OFF

To be left
unconnected

TB3

M1 M2

TB7

M1 M2

51

OC

S

To be connected

BC

53

TB02

M1 M2

TB5STB

S

M1 M2 M1 M2

Group

TB5STB

Interlock operation with
the ventilation unit

GroupGroup

TB5

M1 M2

LC

07

S

IC

03

15

12

m1

A1 B2

TB5STB

M1 M2

IC

06

15

12

A1 B2

L31

Leave the male
connector on
CN41 as it is.
SW5-1 OFF

M1 M2

M1 M2

TB3

TB7

L21

Leave the male
connector on
CN41 as it is.
SW5-1 OFF

M1 M2

TB3

TB7

OC

55

S

To be left
unconnected

M1 M2M1 M2

BC

57

TB02

S

M1 M2

OS

56

S

To be left
unconnected

(2) Cautions

1) ME remote controller and MA remote controller cannot both
be connected to the same group of indoor units.

2) No more than 2 MA remote controllers can be connected to
a group of indoor units. It is not possible to connect a pair of
PAR-30MAAU.

3) Do not connect the terminal blocks (TB5) on the indoor units
that are connected to different outdoor units with each other.

4) Replacement of male power jumper connector (CN41) must
be performed only on one of the outdoor units.

5) Provide grounding to S terminal on the terminal block for
transmission line for centralized control (TB7) on only one of
the outdoor units.

6) When the number of the connected indoor units is as shown
in the table below, one or more transmission boosters (sold
separately) are required.
To connect two transmission boosters, connect them in par­allel. (Observe the maximum number of connectable indoor
units that are listed in the specifications for each outdoor
unit.)

Number of transmission boost­er (sold separately) required

1 unit 2 units

When the P72 and P96 mod­els are not included in the con­nected indoor units

When the P72 and P96 mod­els are included in the con­nected indoor units

27 - 50 units -

21 - 39 units 40 - 50 units

TB5

MA

m3

L22

IC

MA

Group

IC

0402

TB5STB

TB

15

S

12

15

M1 M2

12 12

A1 B2

MA

M1 M2

m4

m5

ers that is required by the system with three BC control­lers. For each BC controller that is subtracted from the
above-mentioned system, two additional indoor units
can be connected.

Refer to the DATABOOK for further information about

how many booster units are required for a given system.

(3) Maximum allowable length

1) Indoor/outdoor transmission line
Maximum distance (1.25mm

L11+L12 200m [656ft]
L21+L22 200m [656ft]

2) Transmission line for centralized control
L31+L21 200m [656ft]

3) MA remote controller wiring
Same as [5] 1.

4) Maximum line distance via outdoor unit
(1.25mm

2

[AWG16] or larger)

L12(L11)+L31+L22(L21) 500m [1640ft]

MA

IC

05

TB5 TB15

S

2

[AWG16] or larger)

The left table shows the number of transmission boost-

- 32 -

GBHWE1116D

[ II Restrictions ]

(4) Wiring method

1) Indoor/outdoor transmission line

Same as [5] 2.

Shielded cable connection

Same as [5] 2.

2) Transmission line for centralized control

Daisy-chain terminals M1 and M2 on the terminal block for
transmission line for centralized control (TB7) on the out­door units (OC) in different refrigerant circuits and on the OC
and OS (Note a) in the same refrigerant circuit.
If a power supply unit is not connected to the transmission
line for centralized control, replace the power jumper con­nector on the control board from CN41 to CN40 on only one
of the outdoor units.

a) The outdoor units in the same refrigerant circuit are automat-

ically designated as OC and OS in the order of capacity from
large to small (if two or more units have the same capacity,
in the order of address from small to large).

b) If TB7's on the outdoor units in the same refrigerant circuit

are not daisy-chained, connect the transmission line for the
central control system to TB7 of the OC. (Note a).To main­tain the central control even during an OC failure or a power
failure, connect TB7 on OC and OS together. (If there is a
problem with the outdoor unit whose power jumper was

(5) Address setting method

Proce-

dures

1 Indoor

Unit or controller

Main unit IC 01 to 50

Address

setting

range

unit

Sub unit

2 LOSSNAY LC 01 to 50

3MA

remote
controller

Main
remote
controller

Sub
remote
controller

MA No set-

tings re­quired.

MA Sub

remote
controller

4 Outdoor unit OCOS51 to 100

5 Auxiliary

outdoor

BCcon­troller (Sub)

BS 51 to 100

unit

BC control­ler (Main)

BC OC (or OS if it exists) +1

moved from CN41 to CN40, central control is not possible,
even if TB7's are daisy-chained.)

c) When connecting TB7, only commence after checking that

the voltage is below 20 VDC.

Only use shielded cables.

Shielded cable connection

Daisy-chain the S terminal on the terminal block (TB7) on
the outdoor units (OC, OS) with the shield wire of the shield­ed cable. Short-circuit the earth terminal ( ) and the S ter­minal on the terminal block (TB7) on the outdoor unit whose
power jumper connector is mated with CN40.

3) MA remote controller wiring

Same as [5] 1.

When 2 remote controllers are connected to the system

Same as [5] 1.

Group operation of indoor units

Same as [5] 1.

4) LOSSNAY connection

Same as [5] 2.

5) Switch setting

Address setting is required as follows.

Setting method Notes

Assign the smallest address to the main

unit in the group.

In a system with a sub BC controller,

make the settings for the indoor units in
the following order.

(i) Indoor unit to be connected to the main

BC controller

(ii) Indoor unit to be connected to sub BC

controller 1

(iii) Indoor unit to be connected to sub BC

controller 2
Make the settings for the indoor units in
the way that the formula "(i) < (ii) < (iii)"
is true.

Assign sequential numbers starting with
the address of the main unit in the same
group +1. (Main unit address +1, main unit
address +2, main unit address +3, etc.)

Assign an arbitrary but unique address to
each of these units after assigning an ad­dress to all indoor units.

- It is not possible to con-

Settings to be made with the Sub/
Main switch

Assign sequential address to the out door

units in the same refrigerant circuit.

The outdoor units are automatically des-

ignated as OC and OS.(Note)

Assign an address that equals the sum of
the smallest address of the indoor units
that are connected to the sub BC controller
and 50.

Port number setting is

required

To perform a group op-

eration of indoor units
that feature different
functions, designate
the indoor unit in the
group with the greatest
number of functions as
the main unit.

None of these addresses may
overlap any of the indoor unit
addresses.

nect a pair of PAR­30MAAU.

To set the address to 100,

set the rotary switches to 50.

If the addresses that is as-

signed to the main BC con­troller overlaps any of the
addresses that are assigned
to the outdoor units or to the
sub BC controller, use a dif­ferent, unused address with­in the setting range.

The use of a sub BC control-

ler requires the connection
of a main BC controller.

Fac-

tory
set­ting

00

00

Main

00

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
They are designated as OC and OS in the descending order of capacity (ascending order of address if the capacities are the
same).

HWE1116D GB

33- 33 -

[ II Restrictions ]

4. A system in which a system controller is connected to the transmission line for centralized control and which is pow­ered from an outdoor unit

(1) Sample control wiring

Interlock operation with

15

12

the ventilation unit

IC

03

TB5STB

12

LC

07

15

TB5

M1 M2

S

L11

Leave the male
connector on
CN41 as it is.
SW5-1 OFF

OS

52

TB3

M1 M2 M1 M2

Move the male connector
from CN41 to CN40.

SW5-1 OFF

OC

51

TB3

53

TB02

M1 M2

L12

BC

Group

IC

01

15

S

TB5STB

M1 M2

12

Group Group

IC

02

TB5STB

M1 M2 M1M2

L31

TB7

M1 M2

S

To be left
unconnected

Leave the male
connector on
CN41 as it is.
SW5-1 OFF

OS

56

TB3

TB7

M1 M2 M1 M2

S

To be left
unconnected

L21

TB7

M1 M2

Leave the male
connector on
CN41 as it is.
SW5-1 OFF

OC

55

TB3

M1 M2M1 M2

TB7

S

To be connected

To be left

S

unconnected

L32

System controller

ABS

Note1

BC

57

TB02

M1 M2

S

(2) Cautions

1) ME remote controller and MA remote controller cannot both be connect­ed to the same group of indoor units.

2) No more than 2 MA remote controllers can be connected to a group of
indoor units. It is not possible to connect a pair of PAR-30MAAU.

3) Do not connect the terminal blocks (TB5) on the indoor units that are con­nected to different outdoor units with each other.

4) Replacement of male power jumper connector (CN41) must be per­formed only on one of the outdoor units.

5) When the System controller is connected TB7 side and TKMU outdoor
unit model is used, connect a PAC-SC51KUA to TB7 side. If a PAC­SC51KUA cannnot be used, connect the System controller to TB3 side.
When YKMU outdoor unit model is used, the male power supply connec­tor can be connected to CN40, and the System controller can be connect­ed to TB7 side.

6) Short-circuit the shield terminal (S terminal) and the earth terminal ( )
on the terminal block for transmission line for centralized control (TB7) on
the outdoor unit whose power jumper connector is mated with CN40.

7) When the number of the connected indoor units is as shown in the
table below, one or more transmission boosters (sold separately)
are required.
To connect two transmission boosters, connect them in parallel.
(Observe the maximum number of connectable indoor units that are
listed in the specifications for each outdoor unit.)

Number of transmission booster
(sold separately) required

1 unit 2 units

When the P72 and P96 models are
not included in the connected in­door units

When the P72 and P96 models are
included in the connected indoor
units

27 - 50 units -

21 - 39 units 40 - 50 units

Group

TB5

M1 M2

A1B

2

MA

L22

IC

TB

15

12

S

A1B

MA

TB5STB

m2 m1

2

m3

Note1 When only the LM adapter is connected,
leave SW5-1 to OFF (as it is).
Note2 LM adapters require the power supply
capacity of single-phase AC 208 - 230V.

A1B

2

MA

IC

Group

0504

15

12

IC

06

TB5STB

15

12

A1B

MA

A1B

2

MA

LC

08

TB5

S

M1 M2M1 M2M1 M2

2

The left table shows the number of transmission boosters

that is required by the system with three BC controllers. For
each BC controller that is subtracted from the above-men­tioned system, two additional indoor units can be connected.

Refer to the DATABOOK for further information about

how many booster units are required for a given system.

8) When a power supply unit is connected to the transmission
line for centralized control, leave the power jumper connec­tor on CN41 as it is (factory setting).

(3) Maximum allowable length

1) Indoor/outdoor transmission line
Same as [5] 3.

2) Transmission line for centralized control
L31+L32(L21) 200m [656ft]

3) MA remote controller wiring
Same as [5] 1.

4) Maximum line distance via outdoor unit
(1.25mm

2

[AWG16] or larger)

L32+L31+L12(L11) 500m [1640ft]
L32+L22(L21) 500m [1640ft]
L12(L11)+L31+L22(L21) 500m[1640ft]

- 34 -

GBHWE1116D

[ II Restrictions ]

(4) Wiring method

1) Indoor/outdoor transmission line

Same as [5] 2.
Only use shielded cables.

Shielded cable connection

Same as [5] 2.

2) Transmission line for centralized control

Daisy-chain terminals A and B on the system controller, ter­minals M1 and M2 on the terminal block for transmission line
for centralized control (TB7) on the outdoor units (OC) in dif­ferent refrigerant circuits and on the outdoor units (OC and
OS) in the same refrigerant circuit. (Note b)
If a power supply unit is not connected to the transmission
line for centralized control, replace the power jumper con­nector on the control board from CN41 to CN40 on only one
of the outdoor units.
If a system controller is connected, set the central control
switch (SW5-1) on the control board of all outdoor units to
"ON."

a) The outdoor units in the same refrigerant circuit are automat-

ically designated as OC and OS in the order of capacity from
large to small (if two or more units have the same capacity,
in the order of address from small to large).

b) If TB7's on the outdoor units in the same refrigerant circuit

are not daisy-chained, connect the transmission line for the
central control system to TB7 of the OC. (Note a).To main­tain the central control even during an OC failure or a power
failure, connect TB7 on OC and OS together. (If there is a
problem with the outdoor unit whose power jumper was

(5) Address setting method

moved from CN41 to CN40, central control is not possible,
even if TB7's are daisy-chained.)

c) When connecting TB7, only commence after checking that

the voltage is below 20 VDC.

Only use shielded cables.

Shielded cable connection

Daisy-chain the S terminal of the terminal block (TB7) on the
system controller, OC, and OS with the shield of the shield­ed cable. Short-circuit the earth terminal ( ) and the S ter­minal on the terminal block (TB7) on the outdoor unit whose
power jumper connector is mated with CN40.

3) MA remote controller wiring

Same as [5] 1.

When 2 remote controllers are connected to the system

Same as [5] 1.

Group operation of indoor units

Same as [5] 1.

4) LOSSNAY connection

Connect terminals M1 and M2 on the terminal block (TB5)
on the indoor unit (IC) to the appropriate terminals on the
terminal block for indoor-outdoor transmission line (TB5) on
LOSSNAY (LC). (Non-polarized two-wire)

Indoor units must be interlocked with the LOSSNAY unit us-

ing the system controller. (Refer to the operation manual for
the system controller for the setting method.) Interlock set­ting from the remote controller is required if the ON/OFF re­mote controller alone or the LM adapter alone is connected.

5) Switch setting

Address setting is required as follows.

Proce-

dures

1 Indoor

Unit or controller

Main unit IC 01 to

unit

Sub unit

2 LOSSNAY LC 01 to

3MA

remote
controller

Main
remote con­troller

Sub
remote con­troller

MA

MA

4 Outdoor unit (Note) OC

OS

5 Auxiliary

outdoor

BCcon­troller (Sub)

BS

unit

BC control­ler (Main)

BC OC (or OS if it exists) +1

Ad-

dress

setting

Setting method Notes

range

Assign the smallest address to the main unit

50

50

No set­tings re­quired.

Sub
remote
controller

51 to 100 Assign sequential address to the outdoor

51 to 100 Assign an address that equals the sum of the

in the group.

In a system with a sub BC controller, make

the settings for the indoor units in the fol­lowing order.

(i) Indoor unit to be conn ected to the main BC

controller

(ii) Indoor unit to be connected to sub BC

controller 1

(iii) Indoor unit to be connected to sub BC

controller 2
Make the settings for the indoor units in the
way that the formula "(i) < (ii) < (iii)" is true.

Assign sequential numbers starting with the
address of the main unit in the same group
+1. (Main unit address +1, main unit address
+2, main unit address +3, etc.)

Assign an arbitrary but unique address to
each of these units after assigning an address
to all indoor units.

-

Settings to be made with the Sub/
Main switch

units in the same refrigerant circuit.

The outdoor units are automatically desig-

nated as OC and OS.(Note)

smallest address of the indoor units that are
connected to the sub BC controller and 50.

Port number setting is re-

quired

To perform a group opera-

tion of indoor units that fea­ture different functions,
designate the indoor unit in
the group with the greatest
number of functions as the
main unit.

None of these addresses may over­lap any of the indoor unit addresses.

Make the same indoor unit group
settings with the system controller
as the ones that were made with the
MA remote controller. It is not possi­ble to connect a pair of PAR­30MAAU.

To set the address to 100, set the

rotary switches to 50.

If the addresses that is assigned to

the main BC controller overlaps
any of the addresses that are as­signed to the outdoor units or to
the sub BC controller, use a differ­ent, unused address within the
setting range.

The use of a sub BC controller re-

quires the connection of a main
BC controller.

Fac-

tory
set­ting

00

00

Main

00

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
They are designated as OC and OS in the descending order of capacity (ascending order of address if the capacities are the same).

HWE1116D GB

35- 35 -

[ II Restrictions ]

5. An example of a system in which a system controller is connected to the indoor-outdoor transmission line (except
LM adapter)

(1) Sample control wiring

Interlock operation with

15

12

the ventilation unit

GroupGroupGroup

IC

03

TB5STB

12

M2M1 M2M1

LC

07

TB5

15

S

Leave the male
connector on
CN41 as it is.

SW5-1 OFF ON

OS

52

TB3

M2M1 M2M1

L11

CN41 CN40 Replace
SW5-1 OFF ON

51

TB3

L12

OC

BC

53

TB02

M2M1

IC

01

15

S

TB5STB

M2M1 M2M1

12

IC

02

TB5STB

L21

Leave the male
connector on
CN41 as it is.

SW5-1 OFF ON

TB7

55

TB3

TB7

M2M1

OC

M2M1

M2M1

S

S

Not
Connect

Connect

L25

BC

57

TB02

M2M1

S

Note1

System controller

ABS

Group Group

L31

TB7

M2M1

S

Leave the male
connector on
CN41 as it is.

SW5-1 OFF ON

OS

56

TB3

M2M1

TB7

M2M1

S

Not
Connect

Not
Connect

(2) Cautions

1) ME remote controller and MA remote controller cannot both be con­nected to the same group of indoor units.

2) No more than 2 MA remote controllers can be connected to a group
of indoor units. It is not possible to connect a pair of PAR-30MAAU.

3) Do not connect the terminal blocks (TB5) on the indoor units that are
connected to different outdoor units with each other.

4) Replacement of male power jumper connector (CN41) must be per­formed only on one of the outdoor units.

5) Provide grounding to S terminal on the terminal block for transmis­sion line for centralized control (TB7) on only one of the outdoor
units.

6) A maximum of 3 system controllers can be connected to the indoor­outdoor transmission line, with the exception that only one G(B)-50A
may be connected.

7) When the total number of indoor units exceeds 20 (12 if one or more
indoor units of the 72 model or above is connected), it may not be
possible to connect a system controller to the indoor-outdoor trans­mission line.

8) When the number of the connected indoor units is as shown in the
table below, one or more transmission boosters (sold separately)
are required.
To connect two transmission boosters, connect them in parallel.
(Observe the maximum number of connectable indoor units that are
listed in the specifications for each outdoor unit.)

TB5

A1B

2

MA

L22

IC

15

TB

12

S

A1B

MA

TB5STB

M2M1M2M1

m2 m1

2

m3

When the P72 and P96 models are not
included in the connected indoor units

When the P72 and P96 models are in­cluded in the connected indoor units

The table above shows the number of transmission boosters that is

required by the system with three BC controllers. For each BC con­troller that is subtracted from the above-mentioned system, two ad­ditional indoor units can be connected.

Refer to the DATABOOK for further information about how many

booster units are required for a given system.

A1B

2

MA

IC

0504

15

12

Note1 LM adapters cannot be connected to the
indoor-outdoor transmission line.

IC

06

TB5STB

M2M1

(3) Maximum allowable length

1) Indoor/outdoor transmission line
Maximum distance (1.25mm

L11+L12 200m [656ft]
L21+L22 200m [656ft]
L25 200m [656ft]

2) Transmission line for centralized control
L31+L21 200m [656ft]

3) MA remote controller wiring
Same as [5] 1.

4) Maximum line distance via outdoor unit
(1.25mm

2

[AWG16] or larger)
L25+L31+L12(L11) 500m [1640ft]
L12(L11)+L31+L22(L21) 500m [1640ft]

A1B

2

MA

LC

08

TB5

15

12

A1B

MA

S

M2M1

2

Number of transmission boost­er (sold separately) required

1 unit 2 units

27 - 50 units -

21 - 39 units 40 - 50 units

2

[AWG16] or larger)

- 36 -

GBHWE1116D

[ II Restrictions ]

(4) Wiring method

1) Indoor/outdoor transmission line

Daisy-chain terminals M1 and M2 of the terminal block for indoor­outdoor transmission line (TB3) on the outdoor units (OC and OS)
(Note a), of the terminal block for indoor-outdoor transmission line
(TB02) on the main and sub BC controllers (BC and BS), of the ter­minal block for indoor-outdoor transmission line (TB5) on each in­door unit (IC), and the S terminal of the system controller.(Non­polarized two-wire)

Only use shielded cables.

a) The outdoor units in the same refrigerant circuit are automatically

designated as OC and OS in the order of capacity from large to small
(if two or more units have the same capacity, in the order of address
from small to large).

Shielded cable connection

Daisy-chain the ground terminal ( ) on the outdoor units (OC and
OS), the S terminal of the terminal block (TB02) on the BC and BS,
and the S terminal of the terminal block (TB5) on the indoor unit (IC)
with the shield of the shielded cable.

2) Transmission line for centralized control

Daisy-chain terminals M1 and M2 on the terminal block for transmis­sion line for centralized control (TB7) on the outdoor units (OC) in
different refrigerant circuits and on the OC and OS in the same re­frigerant circuit. (Note b)
If a power supply unit is not connected to the transmission line for
centralized control, replace the power jumper connector on the con­trol board from CN41 to CN40 on only one of the outdoor units.
Set the central control switch (SW5-1) on the control board of all out­door units to "ON."

b) If TB7's on the outdoor units in the same refrigerant circuit are not

(5) Address setting method

daisy-chained, connect the transmission line for the central control
system to TB7 of the OC. (Note a).To maintain the central control
even during an OC failure or a power failure, connect TB7 on OC
and OS together. (If there is a problem with the outdoor unit whose
power jumper was moved from CN41 to CN40, central control is not
possible, even if TB7's are daisy-chained.)

c) When connecting TB7, only commence after checking that the volt-

age is below 20 VDC.

Only use shielded cables.

Shielded cable connection

Daisy-chain the S terminal on the terminal block (TB7) on the out­door units (OC, OS) with the shield wire of the shielded cable. Short­circuit the earth terminal ( ) and the S terminal on the terminal
block (TB7) on the outdoor unit whose power jumper connector is
mated with CN40.

3) MA remote controller wiring

Same as [5] 1.

When 2 remote controllers are connected to the system

Same as [5] 1.

Group operation of indoor units

Same as [5] 1.

4) LOSSNAY connection

Connect terminals M1 and M2 on the terminal block (TB5) on the in­door units (IC) to the appropriate terminals on the terminal block for
indoor-outdoor transmission line (TB5) on LOSSNAY (LC). (Non-po­larized two-wire)

Indoor units must be interlocked with the LOSSNAY unit using the

system controller. (Refer to the operation manual for the system
controller for the setting method.) Interlock setting from the remote
controller is required if the ON/OFF remote controller alone is con­nected.

5) Switch setting

Address setting is required as follows.

Proce-

dures

1 Indoor

Unit or controller

Main unit IC 01 to

unit

Sub unit

2 LOSSNAY LC 01 to

3MA

remote
controller

Main
remote con­troller

Sub
remote con­troller

MA

MA

4 Outdoor unit OC

OS

5 Auxiliary

outdoor

BCcon­troller (Sub)

BS

unit

BC control­ler (Main)

BC OC (or OS if it exists) +1

Address

setting

range

Assign the smallest address to the main unit

50

50

No set­tings re­quired.

Sub
remote
controller

51 to 100 Assign sequential address to the outdoor

51 to 100 Assign an address that equals the sum of the

in the group.

In a system with a sub BC controller, make

the settings for the indoor units in the fol­lowing order.

(i) Indoor unit to be connected to the main BC

controller

(ii) Indoor unit to be connected to sub BC

controller 1

(iii) Indoor unit to be connected to sub BC

controller 2
Make the settings for the indoor units in the
way that the formula "(i) < (ii) < (iii)" is true.

Assign sequential numbers starting with the
address of the main unit in the same group
+1. (Main unit address +1, main unit address
+2, main unit address +3, etc.)

Assign an arbitrary but unique address to
each of these units after assigning an address
to all indoor units.

Settings to be made with the Sub/
Main switch

units in the same refrigerant circuit.

The outdoor units are automatically desig-

nated as OC and OS.(Note)

smallest address of the indoor units that are
connected to the sub BC controller and 50.

Setting method Notes

-

Port number setting is

required

To perform a group op-

eration of indoor units
that feature different
functions, designate
the indoor unit in the
group with the greatest
number of functions as
the main unit.

None of these addresses may
overlap any of the indoor unit
addresses.

Make the same indoor unit
group settings with the system
controller as the ones that
were made with the MA remote
controller.
It is not possible to connect a
pair of PAR-30MAAU.

To set the address to 100,

set the rotary switches to 50.

If the addresses that is as-

signed to the main BC con­troller overlaps any of the
addresses that are assigned
to the outdoor units or to the
sub BC controller, use a dif­ferent, unused address with­in the setting range.

The use of a sub BC control-

ler requires the connection
of a main BC controller.

Facto­ry set-

ting

00

00

Main

00

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
They are designated as OC and OS in the descending order of capacity (ascending order of address if the capacities are the same).

HWE1116D GB

37- 37 -

[ II Restrictions ]

6. A system with multiple BC controller connections (with a system controller connected to the centralized control line)
(1) Sample control wiring

L31

L11

Leave the male
connector on
CN41 as it is.
SW5-1 OFF ON

M1M2

M1M2

Leave the male
connector on
CN41 as it is.
SW5-1 OFF ON

M1M2

M1M2 M1M2

OS

52

TB3

TB7

S

OS

55

TB3

TB7

S

Move the male connector
from CN41 to CN40
SW5-1 OFF ON

To be left
unconnected

L21

Leave the male
connector on
CN41 as it is.
SW5-1 OFF ON

To be left
unconnected

L32

OC

BC

51

TB3

M1M2 M1M2

TB7

S

M1M2

To be connected

OC

BC

54

TB3

M1M2

TB7

S

M1M2

To be left
unconnected

System
controller

ABS

L12

Group

IC

1 1 2 1 222 12

53 57

TB02

01

15

TB5STB

S

M1M2

12

M1M2 M1M2 M1M2 M1M2 M1M2 M1M2 M1M2 M1M2 M1M2

m2

A1 B2

MA

m3

Group Group Group

IC

02

TB5STB

12

15

TB5STB

BS

IC

04

57

15

TB02

12

A1 B2

MA

L22

IC

07

15

TB5STB

S

12

A1 B2

MA

Group Group Group

IC

1 1 2 1 1

56 59

TB5

TB02

S

Note1

TB

15

12

S

M1M2 M1M2

A1 B2

MA

*1 When only the LM adapter is connected, leave SW5-1 to OFF (as it is).

IC

0503

TB5STB

m1

12

A1 B2

IC

06

15

TB5STB

M1M2

MA

323 1

15

12

M1M2

TB02

BS

IC

09

TB5STB

S

15

12

M1M2

A1 B2

MA

Numbers in the square indicate port numbers.

Connection to BC controllers
Interlock operation with the ventilation unit

*2 LM adapters require the power supply capacity of single-phase AC 208 - 230V.

TB5STB

TB5STB

M1M2

12

LC

13

TB5

15

S

BS

IC

08

61

15

TB02

12

IC

10

15

TB5

12

M1M2

IC

12

11

15

TB5STB

S

LC

14

S

12

A1 B2

MA

IC

1 2

12

TB5STB

(2) Cautions

1) ME remote controller and MA remote controller cannot both be con­nected to the same group of indoor units.

2) No more than 2 MA remote controllers can be connected to a group
of indoor units. It is not possible to connect a pair of PAR-30MAAU.

3) Do not connect the terminal blocks (TB5) on the indoor units that are
connected to different outdoor units with each other.

4) Replacement of male power jumper connector (CN41) must be per­formed only on one of the outdoor units.

5) Short-circuit the S (shield) terminal of the terminal block for the cen­tral control unit (TB7) and the ground terminal ( ) on the outdoor
unit whose power jumper was moved from CN41 to CN40.

6) When the number of the connected indoor units is as shown in the
table below, one or more transmission boosters (sold separately)
are required.
To connect two transmission boosters, connect them in parallel.
(Observe the maximum number of connectable indoor units that are
listed in the specifications for each outdoor unit.)

Number of transmission
booster (sold separately)
required

1 unit 2 units

When the P72 and P96 models are not in­cluded in the connected indoor units

When the P72 and P96 models are includ­ed in the connected indoor units

27 - 50
units

21 - 39
units

40 - 50
units

-

The table above shows the number of transmission boost-

ers that is required by the system with three BC controllers.
For each BC controller that is subtracted from the above­mentioned system, two additional indoor units can be con­nected.

Refer to the DATABOOK for further information about how

many booster units are required for a given system.

7) When a power supply unit is connected to the transmission
line for centralized control, leave the power jumper connec­tor on CN41 as it is (factory setting).

(3) Maximum allowable length

1) Indoor/outdoor transmission line

2

Maximum distance (1.25mm

[AWG16] or larger)
L11+L12 200m [656ft]
L21+L22 200m [656ft]

2) Transmission line for centralized control
L31+L32(L21) 200m [656ft]

3) MA remote controller wiring
Maximum overall line length

(0.3 to 1.25mm

2

[AWG22 to 16])
m1 200m [656ft]
m2+m3 200m [656ft]

4) Maximum line distance via outdoor unit
(1.25mm

2

[AWG16] or larger)

L32+L31+L12(L11) 500m [1640ft]
L32+L22(L21) 500m [1640ft]
L12(L11)+L31+L22(L21) 500m[1640ft]

- 38 -

GBHWE1116D

[ II Restrictions ]

(4) Wiring method

1) Indoor/outdoor transmission line
Daisy-chain terminals M1 and M2 of the terminal block

for indoor-outdoor transmission line (TB3) on the outdoor
units (OC and OS) (Note a), of the terminal block for in­door-outdoor transmission line (TB02) on the main and
sub BC controllers (BC and BS), and of the terminal
block for indoor-outdoor transmission line (TB5) on each
indoor unit (IC). (Non-polarized two-wire)

Only use shielded cables.

a) The outdoor units in the same refrigerant circuit are auto-

matically designated as OC and OS in the order of ca­pacity from large to small (if two or more units have the
same capacity, in the order of address from small to
large).

Shielded cable connection

Daisy-chain the ground terminal ( ) on the outdoor units
(OC and OS), the S terminal of the terminal block (TB02)
on the BC and BS, and the S terminal of the terminal
block (TB5) on the indoor unit (IC) with the shield of the
shielded cable.

2) Transmission line for centralized control
Daisy-chain terminals A and B of the system controller,

M1 and M2 terminals of TB7 (terminal block for central­ized control system connection) on the outdoor units
(OC) in different refrigerant systems, and M1 and M2 ter­minals of TB7 (terminal block for centralized control sys­tem connection) on the outdoor units (OC and OS ) in the
same refrigerant circuit. (Note b)
If a power supply unit is not connected to the transmis­sion line for centralized control, replace the power jump­er connector on the control board from CN41 to CN40 on
only one of the outdoor units.
When connecting a system controller, set the centralized
control switch (SW5-1) on the control board of all indoor
units to "ON."

cuit are not daisy-chained, connect the transmission line
for the central control system to TB7 of the OC. (Note
a).To maintain the central control even during an OC fail­ure or a power failure, connect TB7 on OC and OS to­gether. (If there is a problem with the outdoor unit whose
power jumper was moved from CN41 to CN40, central
control is not possible, even if TB7's are daisy-chained.)

c) When connecting TB7, only commence after checking

that the voltage is below 20 VDC.

Only use shielded cables.

Shielded cable connection

Daisy-chain the S terminal of the terminal block (TB7) on
the system controller, OC, and OS with the shield of the
shielded cable. Short-circuit the earth terminal ( ) and
the S terminal on the terminal block (TB7) on the outdoor
unit whose power jumper connector is mated with CN40.

3) MA remote controller wiring
Same as [5] 1.

When 2 remote controllers are connected to the sys­tem

Same as [5] 1.

Group operation of indoor units

Same as [5] 1.

4) LOSSNAY connection
Connect terminals M1 and M2 on the terminal block

(TB5) on the indoor unit (IC) to the appropriate terminals
on the terminal block for indoor-outdoor transmission line
(TB5) on LOSSNAY (LC). (Non-polarized two-wire)

Indoor units must be interlocked with the LOSSNAY unit

using the system controller. (Refer to the operation man­ual for the system controller for the setting method.) In­terlock setting from the remote controller is required if the
ON/OFF remote controller alone or the LM adapter alone
is connected.

5) Switch setting
Address setting is required as follows.

b) If TB7's on the outdoor units in the same refrigerant cir-

HWE1116D GB

39- 39 -

[ II Restrictions ]

(5) Address setting method

Pro-

ce­dur

es

1 Indoor

Unit or controller

Main unit IC 01 to 50

Address

setting

range

unit

Sub unit

2 LOSSNAY LC 01 to 50

3MA

remote
control­ler

Main re­mote
controller

Sub re­mote con­troller

4 Outdoor unit OC

No set-

MA

tings re­quired.

Sub re-

MA

mote
controller

51 to 100 The sum of the smallest address of the indoor units in

OS

5 Auxilia-

ry out­door
unit

BC
controller
(Sub)

BC con­troller
(Main)

51 to 100 Assign an address that equals the sum of the smallest

BS

BC 51 to

100

Setting method Notes

Assign the smallest address to the main unit in the

group.

In a system with a sub BC controller, make the set-

tings for the indoor units in the following order.

(i) Indoor unit to be connected to the main BC control-

ler
(ii) Indoor unit to be connected to sub BC controller 1
(iii) Indoor unit to be connected to sub BC controller 2

Make the settings for the indoor units in the way that
the formula "(i) < (ii) < (iii)" is true.

Assign sequential numbers starting with the address of
the main unit in the same group +1. (Main unit address
+1, main unit address +2, main unit address +3, etc.)

Assign an arbitrary but unique address to each of these
units after assigning an address to all indoor units.

-

Settings to be made with the Sub/Main switch

the same system and 50.

Assign sequential address to the outdoor units in the

same refrigerant circuit.

The outdoor units are automatically designated as

OC and OS.(Note)

address of the indoor units that are connected to the
sub BC controller and 50.

OC (or OS if it exists) +1

Port number setting is re-

quired

To perform a group opera-

tion of indoor units that
feature different functions,
designate the indoor unit
in the group with the
greatest number of func­tions as the main unit.

None of these addresses may
overlap any of the indoor unit ad­dresses.

Make the same indoor unit group
settings with the system controller
as the ones that were made with
the MA remote controller.
It is not possible to connect a pair
of PAR-30MAAU.

To set the address to 100, set

the rotary switches to 50.

To set the address to 100, set

the rotary switches to 50.

If the addresses that is assigned

to the main BC controller over­laps any of the addresses that
are assigned to the outdoor
units or to the sub BC control­ler, use a different, unused ad­dress within the setting range.

The use of a sub BC controller

requires the connection of a
main BC controller.

Fac-

tory
set­ting

00

00

Mai

n

00

00

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
They are designated as OC and OS in the descending order of capacity (ascending order of address if the capacities are the same).

- 40 -

GBHWE1116D

[ II Restrictions ]

HWE1116D GB

41- 41 -

[ II Restrictions ]

[6] An Example of a System to which an ME Remote Controller is connected

(1) Sample control wiring

L11

Leave the male
connector on
CN41 as it is.

SW5-1 OFF ON

OS

52

TB3

M1M2 M1M2

TB7

M1M2

S

Leave the male
connector on
CN41 as it is.

L31

SW5-1 OFF ON

OS

56

TB3

M1M2 M1M2

TB7

M1M2 M1M2

S

Move the male connector
from CN41 to CN40.
SW5-1 OFF ON

To be left
unconnected

L21

Leave the male
connector on
CN41 as it is.

SW5-1 OFF ON

To be left
unconnected

OC

51

TB3

TB7

M1 M2

S

OC

55

TB3

TB7

S

System controller

To be connected

To be left
unconnected

L32

ABS

Note1

BC

53

TB02

M1M2

BC

Group

IC

01

Group

TB5STB

M1M2

A1 B2

101

RC

S

57

TB02

M1M2

S

m3

A1 B2

154

RC

*1 When only the LM adapter is connected, leave SW5-1 to OFF (as it is).
*2 LM adapters require the power supply capacity of single-phase AC 208 - 230V.

L12

Group Group

02

15

12

m1

L22

TB5STB

M1M2

A1 B2

102

RC

IC

0504

TB5

M1M2 M1M2 M1M2 M1M2

A1 B2

104

RC

TB5STB

TB

15

12

S

m2

Interlock operation with the ventilation unit

IC

IC

03

Group

TB5STB

A1 B2

103

RC

IC

15

12

IC

06

15

TB5STB

A1 B2

106

RC

15

12

12

15

12

TB5

LC

07

TB5

S

M1M2M1M2

LC

08

S

(2) Cautions

1) ME remote controller and MA remote controller cannot both
be connected to the same group of indoor units.

2) No more than 2 ME remote controllers can be connected to
a group of indoor units.

3) Do not connect the terminal blocks (TB5) on the indoor units
that are connected to different outdoor units with each other.

4) Replace the power jumper connector of the control board
from CN41 to CN40 on only one of the outdoor units.

5) Provide an electrical path to ground for the S terminal on the
terminal block for centralized control on only one of the out­door units.

6) When the number of the connected indoor units is as shown
in the table below, one or more transmission boosters (sold
separately) are required.
To connect two transmission boosters, connect them in par­allel. (Observe the maximum number of connectable indoor
units that are listed in the specifications for each outdoor
unit.)

Number of transmission bo oster
(sold separately) required

1 unit 2 units 3 units

When the P72 and P96 models are not
included in the connected indoor units

When the P72 and P96 models are in­cluded in the connected indoor units

15 - 34
units

11 - 26
units

The left table shows the number of transmission boosters

35 - 50

units

27 - 42
units

-

43 - 50
units

that is required by the system with three BC controllers. For
each BC controller that is subtracted from the above-men­tioned system, two additional indoor units can be connected.

Refer to the DATABOOK for further information about how

many booster units are required for a given system.

7) When a power supply unit is connected to the transmission
line for centralized control, leave the power jumper connec­tor on CN41 as it is (factory setting).

(3) Maximum allowable length

1) Indoor/outdoor transmission line
Same as [5] 3.

2) Transmission line for centralized control
Same as [5] 4.

3) ME remote controller wiring
Maximum overall line length

(0.3 to 1.25mm

2

[AWG22 to 16])
m1 10m [32ft]
m2+m3 10m [32ft]
If the standard-supplied cable must be extended, use a
cable with a diameter of 1.25mm

2

[AWG16]. The section
of the cable that exceeds 10m [32ft] must be included in
the maximum indoor-outdoor transmission line distance
described in (1).
When connected to the terminal block on the Simple re­mote controller, use cables that meet the following cable
size specifications: 0.75 - 1.25 mm

4) Maximum line distance via outdoor unit
(1.25 mm

2

[AWG16] or large)

2

[AWG18-16].

Same as [5] 4.

- 42 -

GBHWE1116D

[ II Restrictions ]

(4) Wiring method

1) Indoor/outdoor transmission line
Same as [5] 2.

Shielded cable connection

Same as [5] 2.

2) Transmission line for centralized control
Same as [5] 4.

Shielded cable connection

Same as [5] 4.

3) ME remote controller wiring
ME remote controller is connectable anywhere on the in-

door-outdoor transmission line.

(5) Address setting method

Ad-

Proce-

dures

Unit or controller

dress

setting

range

1 Indoor

unit

Main unit IC 01 to

50

Sub unit

2 LOSSNAY LC 01 to

50

3ME

remote
controller

4 Outdoor unit OC

Main
remote con­troller

Sub
remote con­troller

RC 101 to

150

RC 151 to

200

51 to 100 Assign sequential address to the outdoor

OS

5 Auxiliary

outdoor

BCcon­troller (Sub)

51 to 100 Assign an address that equals the sum of the

BS

unit

BC control­ler (Main)

BC OC (or OS if it exists) +1

When 2 remote controllers are connected to the sys­tem

Refer to the section on Switch Setting.

Performing a group operation (including the group
operation of units in different refrigerant circuits).

Refer to the section on Switch Setting.

4) LOSSNAY connection
Same as [5] 4.

5) Switch setting
Address setting is required as follows.

Setting method Notes

Assign the smallest address to the main unit

in the group.

In a system with a sub BC controller, make

the settings for the indoor units in the fol­lowing order.

(i) Indoor unit to be connected to the main BC

controller

(ii) Indoor unit to be connected to sub BC

controller 1

(iii) Indoor unit to be connected to sub BC

controller 2
Make the settings for the indoor units in the
way that the formula "(i) < (ii) < (iii)" is true.

Assign sequential numbers starting with the
address of the main unit in the same group
+1. (Main unit address +1, main unit address
+2, main unit address +3, etc.)

Assign an arbitrary but unique address to
each of these units after assigning an address
to all indoor units.

Add 100 to the main unit address in
the group

Add 150 to the main unit address in
the group

units in the same refrigerant circuit.

The outdoor units are automatically desig-

nated as OC and OS.(Note)

smallest address of the indoor units that are
connected to the sub BC controller and 50.

Port number setting is

required

To perform a group op-

eration of indoor units
that have different func­tions, set the indoor unit
in the group with the
greatest number of
functions as the main
unit.

None of these addresses may
overlap any of the indoor unit
addresses.

It is not necessary to set the

100s digit.

To set the address to 200,

set the rotary switches to 00.

To set the address to 100,

set the rotary switches to 50.

If the addresses that is as-

signed to the main BC con­troller overlaps any of the
addresses that are assigned
to the outdoor units or to the
sub BC controller, use a dif­ferent, unused address with­in the setting range.

The use of a sub BC control-

ler requires the connection
of a main BC controller.

Fac-

tory
set­ting

00

00

101

00

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
They are designated as OC and OS in the descending order of capacity (ascending order of address if the capacities are the
same).

HWE1116D GB

43- 43 -

[ II Restrictions ]

[7] An Example of a System to which both MA Remote Controller and ME Remote Controller are connected

(1) Sample control wiring

L12

Group Group

IC

01

15

TB5STB

M1M2 M1M2 M1M2

12

IC

02

TB5STB

15

12

IC

06

TB5STB

15

12

Leave the male
connector on
CN41 as it is.

SW5-1 OFF ON

OS

52

TB3

M1M2

L11

Move the male connector
from CN41 to CN40.
SW5-1 OFF ON

M1M2

51

TB3

OC

BC

53

TB02

M1M2

S

TB7

M1M2

S

Leave the male
connector on
CN41 as it is.

L31

SW5-1 OFF ON

OS

55

TB3

TB7

S

To be left
unconnected

L21

To be left
unconnected

TB7

M1M2

S

Leave the male
connector on
CN41 as it is.

SW5-1 OFF ON

OC

54

TB3

TB7

S

M1 M2M1 M2

To be connected

To be left
unconnected

L32

Note1

System controller

ABS

M1 M2M1 M2M1 M2

BC

56

TB02

S

(2) Cautions

1) Be sure to connect a system controller.

2) ME remote controller and MA remote controller cannot both be con­nected to the same group of indoor units.

3) Assign to the indoor units connected to the MA remote controller ad­dresses that are smaller than those of the indoor units that are con­nected to the ME remote controller.

4) No more than 2 ME remote controllers can be connected to a group
of indoor units.

5) No more than 2 MA remote controllers can be connected to a group
of indoor units. It is not possible to connect a pair of PAR-30MAAU.

6) Do not connect the terminal blocks (TB5) on the indoor units that are
connected to different outdoor units with each other.

7) Replace the power jumper connector of the control board from CN41
to CN40 on only one of the outdoor units.

8) Provide an electrical path to grou nd for the S terminal on the terminal
block for centralized control on only one of the outdoor units.

9) When the number of the connected indoor units is as shown in the
table below, one or more transmission boosters (sold separately)
are required.
To connect two transmission boosters, connect them in parallel.
(Observe the maximum number of connectable indoor units that are
listed in the specifications for each outdoor unit.)

Number of transmission booster
(sold separately) required

1 unit 2 units 3 units

When the P72 and P96 models
are not included in the connected
indoor units

When the P72and P96 models
are included in the connected in­door units

15 - 34
units

11 - 26
units

35 - 50

units

27 - 42
units

-

43 - 50
units

A1 B2

A1 B2

106

MA

L22

IC

GroupGroup

IC

0403

TB5

TB

15

12

S

A1 B2

MA

*1 When only the LM adapter is connected, leave SW5-1 to OFF (as it is).
*2 LM adapters require the power supply capacity of single-phase AC 208 - 230V.

TB5STB

A1 B2

104

RC

15

12

05

TB5STB

M1M2M1M2M1 M2

RC

IC

15

12

The left table shows the number of transmission boost-

ers that is required by the system with three BC control­lers. For each BC controller that is subtracted from the
above-mentioned system, two additional indoor units
can be connected.

Refer to the DATABOOK for further information about

how many booster units are required for a given system.

10) When a power supply unit is connected to the transmis­sion line for centralized control, leave the power jumper
connector on CN41 as it is (factory setting).

- 44 -

GBHWE1116D

[ II Restrictions ]

(3) Maximum allowable length

1) Indoor/outdoor transmission line
Same as [5] 3.

2) Transmission line for centralized control
Same as [5] 4.

3) MA remote controller wiring
Same as [5] 1.

4) ME remote controller wiring
Same as [6]

5) Maximum line distance via outdoor unit
(1.25 mm

2

[AWG16] or larger)

Same as [5] 4.

(4) Wiring method

1) Indoor/outdoor transmission line
Same as [5] 2.

Shielded cable connection

Same as [5] 2.

2) Transmission line for centralized control
Same as [5] 4.

Shielded cable connection

Same as [5] 4.

3) MA remote controller wiring

When 2 remote controllers are connected to the sys­tem

Group operation of indoor units

Same as [5] 1.

4) ME remote controller wiring

When 2 remote controllers are connected to the sys­tem

Group operation of indoor units

Same as [6]

5) LOSSNAY connection
Same as [5] 4.

6) Switch setting
Address setting is required as follows.

HWE1116D GB

45- 45 -

[ II Restrictions ]

(5) Address setting method

Pro-

ce-

dure

Unit or controller

s

1 Opera-

tion with
the

In­door
unit

Main
unit

IC 01 to

50

MA re­mote
controller

2 Opera-

tion with
the
ME re­mote

MA
re­mote
con­troller

In­door
unit

Sub
unit

Main re­mote
control­ler

Sub
remote
control­ler

Main
unit

Sub
unit

IC 01 to

50

No

MA

set­tings re­quired.

Sub

MA

remote
control­ler

IC 01 to 50Assign the smallest address

IC 01 to

50

controller

ME
re­mote
con­troller

Main re­mote
control­ler

Sub
remote
control­ler

RC 101 to

150

RC 151 to

200

3 LOSSNAY LC 01 to

50

4 Outdoor unit OCOS51 to

100

5 Auxiliary

outdoor

BCcontroller (Sub)

BS 51 to

100

unit

BC controller
(Main)

BC OC (or OS if it exists) +1

Ad-

dress

set-

ting

range

Setting method Notes

Assign the smallest address to

the main unit in the group.

In a system with a sub BC con-

troller, make the settings for the
indoor units in the following or­der.

(i) Indoor unit to be connected to

the main BC controller

(ii) Indoor unit to be connected to

sub BC controller 1

(iii) Indoor unit to be connected to

sub BC controller 2
Make the settings for the indoor
units in the way that the formula "(i)
< (ii) < (iii)" is true.

Assign sequential numbers start­ing with the address of the main
unit in the same group +1. (Main
unit address +1, main unit address
+2, main unit address +3, etc.)

-

Assign an address smaller than that of

the indoor unit that is connected to the
ME remote controller.

Enter the same indoor unit group set-

tings on the system controller as the
ones that were entered on the MA re­mote controller.

To perform a group operation of indoor

units that have different functions, des­ignate the indoor unit in the group with
the greatest number of functions as the
main unit.

Port number setting is required.

It is not possible to connect a pair
of PAR-30MAAU.

Settings to be made according
to the remote controller func­tion selection

Assign an address higher than those of

to the main unit in the group.

Assign sequential numbers
starting with the address of the
main unit in the same group
+1. (Main unit address +1,
main unit address +2, main
unit address +3, etc.)

Add 100 to the main unit ad­dress in the group.

the indoor units that are connected to
the MA remote controller.

Make the initial settings for the indoor

unit group settings via the system con­troller.

To perform a group operation of indoor

units that have different functions, des­ignate the indoor unit in the group with
the greatest number of functions as the
main unit.

Port number setting is required.
Addresses that are assigned to the in-

door units that are connected to t he sub
BC controller should be higher than the
addresses that are assigned to the in­door units that are connected to the
main BC controller.

It is not necessary to set the 100s

digit.

To set the address to 200, set it to

00.

Add 150 to the main unit ad­dress in the group.

Assign an arbitrary but unique
address to each of these units

None of these addresses may over-

lap any of the indoor unit addresses.
after assigning an address to
all indoor units.

Assign sequential address to the

outdoor units in the same refrig­erant circuit.

The outdoor units are automati-

cally designated as OC and
OS.(Note)

Assign an address that equals the
sum of the smallest address of the
indoor units that are connected to
the sub BC controller and 50.

To set the address to 100, set it to 50.
If the addresses that is assigned to the

main BC controller overlaps any of the
addresses that are assigned to the out­door units or to the sub BC controller,
use a different, unused address within
the setting range.

The use of a sub BC controller requires

the connection of a main BC controller.

Facto­ry set-

ting

00

Main

00

101

00

00

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
They are designated as OC and OS in the descending order of capacity (ascending order of address if the capacities are the same).

- 46 -

GBHWE1116D

[ II Restrictions ]

[8] Restrictions on Pipe Length

(1) System that requires 16 BC controller ports or fewer <System with only the main BC controller or standard BC con-

troller>

Outdoor unit

*Use a main BC controller when connecting the outdoor units of
P144 model or above.

Branch joint
(CMY-Y102S-G2)

b

B

c

Maximum of 3 units per port
Total capacity of P54 or below

Indoor

d

h2

HH'

h1

Reducer (P06 - P18 models)
(Supplied with the BC Controller)

a

Indoor Indoor Indoor

(P06 - P54 models) (P72 - P96 models)

A

BC controller

Junction pipe
(CMY-R160-J)

Unit: m [ft]

Operation Pipe sections Allowable length of pipes

Length Total pipe length A+B+a+b+c+d Refer to the restrictions on the total piping

length in the graph on the next page.

Total pipe length from the outdoor unit
to the farthest indoor unit

Between outdoor unit and BC control-

A+B+d 165 [541] or less

(Equivalent length 190 [623] or less)

A 110 [360] or less

ler

*1

Height
difference

Between BC controller and indoor unit B+d 40 [131] or less

Between indoor
and outdoor units

Outdoor unit
above indoor unit

Outdoor unit be-

H 50 [164] or less

H' 40 [131] or less

low indoor unit

Between indoor unit and BC controller h1 15[49](10[32]) or less

Between indoor units h2 15[49](10[32]) or less

*2

*2

*1. When the overall pipe length between the BC controller and the farthest indoor unit exceeds 40m [131ft], observe the

restrictions in the figure titled "Restrictions on pipe length" below. (Except the P96 models)

*2. When the capacity of the connected indoor units is P72 or above, use the figures in the parentheses as a reference.

1) To connect the P72 through P96 models of indoor units, use an optional twinning pipe kit (Model: CMY-R160-J) and merge
the two ports before connecting them.

2) Do not connect the P72 or P96 models of indoor units and other models of indoor units at the same port.

3) Note the following when connecting multiple indoor units to a single port.

Those indoor units connected to the same port must be installed in the same room.
Set the indoor temperature via the connected remote controller, and when connecting multiple remote controllers, configure

these controllers as a group by making appropriate settings. These indoor units can only be operated in the same mode.

HWE1116D GB

- 47 -

[ II Restrictions ]

Restrictions on pipe length [PURY-P72, P96TKMU-A, PURY-P72, P96YKMU-A]

1000

[3280]

900

[2952]

800

[2624]

700

[2296]

600

[1968]

500

[1640]

400

[1312]

300

[984]

Aggregate length of all pipes(m[ft])

200

[656]

10 20 30 40 50 60 70 80 90

[32] [64] [98] [131] [164] [196] [229] [262] [295] [328] [360]

Pipe length between outdoor unit and BC controller (m[ft])

100 110

The height difference and the pipe length between BC controller and indoor units

70

[229]

60

[196]

50

[164]

40

[131]

30

[98]

20

[64]

Pipe length between main BC

10

controller and farthest indoor unit (m[ft])

[32]

0

0 5 10 15

Height difference between main BC controller and farthest indoor unit (m[ft])

[16] [32] [49]

HWE1116D GB

- 48 -

[ II Restrictions ]

(2) System that requires more than 16 BC controller ports or with multiple BC controllers <Outdoor unit P144 model or

below.>

Outdoor unit

HH'

Reducer (P06 - P18 models)
(Supplied with the BC Controller)

h1

(P06 - P54 models) (P72 - P96 models)

Branch joint
(CMY-Y202-G2)

A

BC controller (main)

Junction pipe

a

(CMY-R160-J)

Indoor Indoor Indoor Indoor

b

(CMY-Y102L-G2)
(CMY-Y102S-G2)

C

Branch joint
(

CMY-Y102S-G2)

B

c

Maximum of 3 units per port
Total capacity of P54 or below

d

BC controller (sub)

D

BC controller (sub)

E

Indoor

e

Indoor

h1

h3

h2

h1

f

Unit: m [ft]

Operation Pipe sections Allowable length of pipes

Length Total pipe length A+B+C+D+E+a+b+c+d+e+f Refer to the restrictions on the total pip-

ing length in the graphon the next page.

Total pipe length from the out­door unit to the farthest indoor

A+C+E+f 165 [541] or less

(Equivalent length 190 [623] or less)

unit

Between outdoor unit and BC

A 110 [360] or less

controller

*1

Height
differ­ence

Between BC controller and in­door unit

Outdoor unit
above in-

Between indoor

door unit

B+d or C+D+e

40 [131] or less

or C+E+f

H 50 [164] or less

and outdoor
units

Outdoor unit

H' 40 [131] or less
below in­door unit

Between indoor unit and BC

h1 15 [49](10[32]) or less

*2

controller

Between indoor units h2 15 [49](10[32]) or less

*2

Between the BC controller
(main or sub) and the sub BC

h3 15 [49] or less

controller

*1. When the overall pipe length between the BC controller and the farthest indoor unit exceeds 40m [131ft], observe the

restrictions in the figure titled "Restrictions on pipe length" below. (Except the P96 models)

*2. When the capacity of the connected indoor units is P72 or above, use the figures in the parentheses as a reference.

HWE1116D GB

- 49 -

[ II Restrictions ]

1) A system that requires more than 16 BC controller ports requires two or three BC controllers (main and sub), and three pipes
will be used between the main and the sub BC controllers.

2) When connecting two sub BC controllers, observe the maximum allowable length in the table above.

3) When connecting two sub BC controllers, install them in parallel.

4) To connect the P72 through P96 models of indoor units, use an optional twinning pipe kit (Model: CMY-R160-J) and merge
the two ports before connecting them.

5) Do not connect the P72 or P96 models of indoor units and other models of indoor units at the same port.

6) Note the following when connecting multiple indoor units to a single port.

Those indoor units connected to the same port must be installed in the same room.
Set the indoor temperature via the connected remote controller, and when connecting multiple remote controllers, configure

these controllers as a group by making appropriate settings. These indoor units can only be operated in the same mode.

7) The maximum capacity of the indoor units that is connectable to the CMB-P-NU-GB types of sub BC controllers is P126 or
below (when two GB type controllers are connected P126 or below for both combined).
The maximum total capacity of indoor units that is connectable to the sub BC controller CMB-P1016NU-HB is P126 or below.
If at least one CMB-P1016NU-HB unit is connected, the maximum total capacity of connectable indoor units to a system with
two sub controllers is P168 or below.

Restrictions on pipe length [PURY-P120, P144TKMU-A, PURY-P120, P144Y(S)KMU-A]

1000

[3280]

900

[2952]

800

[2624]

700

[2296]

600

[1968]

500

[1640]

400

[1312]

300

[984]

Aggregate length of all pipes(m[ft])

200

[656]

10 20 30 40 50 60 70 80 90

[32] [64] [98] [131] [164] [196] [229] [262] [295] [328] [360]

Pipe length between outdoor unit and BC controller (m[ft])

100 110

The height difference and the pipe length between BC controller and indoor units

Pipe length between main BC

Height difference between main BC controller and farthest indoor unit (m[ft])

70

[229]

60

[196]

50

[164]

40

[131]

30

[98]

20

[64]

10

controller and farthest indoor unit (m[ft])

[32]

0

0 5 10 15

[16] [32] [49]

HWE1116D GB

- 50 -

[ II Restrictions ]

(3) System that requires more than 16 BC controller ports or with multiple BC controllers <Outdoor unit P168 model or

above.>

Branch joint (CMY-R100VBK)
The distributor on the low-pressure side must be placed in the outdoor unit that has a larger capacity

2

index of the two, regardless of the relative positions of the outdoor units or their addresses.
If the distributor is placed in the outdoor unit that has a smaller capacity, refrigerant will not be properly
distributed and compressor failure may result.
(If outdoor units that have the same capacity are used in combination, the distributor can be placed in
either outdoor unit.)

Branch joint
(CMY-Y202-G2)
(CMY-Y102L-G2)

A

BC controller (main)

Junction pipe

a

(CMY-R160-J)

Indoor Indoor Indoor Indoor

b

C

B

(CMY-Y102S-G2)

Branch joint
(

CMY-Y102S-G2)

cd

Maximum of 3 units per port
Total capacity of P54 or below

BC controller (sub)

D

BC controller (sub)

E

Indoor

e

Indoor

h1

h3

h2

f

h1

h4

HH'

Outdoor unit

h1

1

Outdoor unit

F

Reducer (P06 - P18 models)
(Supplied with the BC Controller)

G

(P06 - P54 models) (P72 - P96 models)

Unit: m [ft]

Operation Pipe sections Allowable length of pipes

Length Total pipe length F+G+A+B+C+D+E+a+b+c+d+e+fRefer to the restrictions on the total pip-

ing length in the graph on the next page.

Total pipe length from the out­door unit to the farthest indoor

F(G)+A+C+E+f 165 [541] or less

(Equivalent length 190 [623] or less)

unit

Between outdoor unit and BC

F(G)+A 110 [360] or less

controller

Between BC controller and in­door unit

B+d or C+D+e

or C+E+f

40 [131] or less

*1

Between indoor units F+G 5 [16] or less

Height
differ­ence

Between indoor

Outdoor unit
above in­door unit

H 50 [164] or less

and outdoor
units

Outdoor unit

H' 40 [131] or less
below in­door unit

Between indoor unit and BC

h1 15 [49](10[32]) or less

*2

controller

Between indoor units h2 15 [49](10[32]) or less

*2

Between the BC controller
(main or sub) and the sub BC

h3 15 [49] or less

controller

Between outdoor units h4 0.1 [0.3] or less

*1. When the overall pipe length between the BC controller and the farthest indoor unit exceeds 40m [131ft], observe

the restrictions in the figure titled "Restrictions on pipe length" below. (Except the P96 models)

*2. When the capacity of the connected indoor units is P72 or above, use the figures in the parentheses as a reference.

HWE1116D GB

- 51 -

[ II Restrictions ]

1) A system that requires more than 16 BC controller ports requires two or three BC controllers (main and sub), and three pipes
will be used between the main and the sub BC controllers.

2) When connecting two sub BC controllers, observe the maximum allowable length in the table above.

3) When connecting two sub BC controllers, install them in parallel.

4) To connect the P72 through P96 models of indoor units, use an optional twinning pipe kit (Model: CMY-R160-J) and merge
the two ports before connecting them.

5) Do not connect the P72 or P96 models of indoor units and other models of indoor units at the same port.

6) Note the following when connecting multiple indoor units to a single port.

Those indoor units connected to the same port must be installed in the same room.
Set the indoor temperature via the connected remote controller, and when connecting multiple remote controllers, configure

these controllers as a group by making appropriate settings. These indoor units can only be operated in the same mode.

7) The maximum capacity of the indoor units that is connectable to the CMB-P-NU-GB types of sub BC controllers is P126 or
below (when two GB type controllers are connected P126 or below for both combined) .
The maximum total capacity of indoor units that is connectable to the sub BC controller CMB-P1016NU-HB is P126 or below.
If at least one CMB-P1016NU-HB unit is connected, the maximum total capacity of connectable indoor units to a system with
two sub controllers is P168 or below.

Restrictions on pipe length

[PURY-P168TSKMU-A]
[PURY-P168YSKMU-A]

1000

[3280]

900

[2952]

800

[2624]

700

[2296]

600

[1968]

500

[1640]

400

[1312]

300

[984]

Aggregate length of all pipes(m[ft])

200

[656]

10 20 30 40 50 60 70 80 90

[32] [64] [98] [131] [164] [196] [229] [262] [295] [328] [360]

Pipe length between outdoor unit and BC controller (m[ft])

100

[PURY-P192TSKMU-A]
[PURY-P192YSKMU-A]

110

1000

[3280]

900

[2952]

800

[2624]

700

[2296]

600

[1968]

500

[1640]

400

[1312]

300

[984]

Aggregate length of all pipes(m[ft])Aggregate length of all pipes(m[ft])

200

[656]

10 20 30 40 50 60 70 80 90

[32] [64] [98] [131] [164] [196] [229] [262] [295] [328] [360]

Pipe length between outdoor unit and BC controller (m[ft])

100

110

[PURY-P216, P240TSKMU-A]
[PURY-P216, P240YSKMU-A]

1000

[3280]

900

[2952]

800

[2624]

700

[2296]

600

[1968]

500

[1640]

400

[1312]

300

[984]

Aggregate length of all pipes(m[ft])

200

[656]

10 20 30 40 50 60 70 80 90

[32] [64] [98] [131] [164] [196] [229] [262] [295] [328] [360]

Pipe length between outdoor unit and BC controller (m[ft]) Pipe length between outdoor unit and BC controller (m[ft])

100

[PURY-P264, P288TSKMU-A]
[PURY-P264, P288YSKMU-A]

1000

[3280]

900

[2952]

800

[2624]

700

[2296]

600

[1968]

500

[1640]

400

[1312]

300
[984]

200

110

[656]

10 20 30 40 50 60 70 80 90
[32] [64] [98] [131] [164] [196] [229] [262] [295] [328] [360]

The height difference and the pipe length between BC controller and indoor units

70

[229]

60

[196]

50

[164]

40

[131]

30

[98]

20

[64]

Pipe length between main BC

10

controller and farthest indoor unit (m[ft])

[32]

0

0 5 10 15

Height difference between main BC controller and farthest indoor unit (m[ft])

[16] [32] [49]

100 110

HWE1116D GB

- 52 -

[ II Restrictions ]

1. Refrigerant pipe size

(1) Between outdoor unit and the first twinning pipe (Part A)

Refrigerant pipe size Connection to outdoor unit and BC controller

Outdoor units

Low-pressure pipe High-pressure pipe Low-pressure pipe High-pressure pipe

72 ø19.05 [3/4"] ø15.88 [5/8"] ø19.05 [3/4"] ø15.88 [5/8"]

96 ø22.2 [7/8"]

ø19.05 [3/4"]

120

144

ø28.58 [1-1/8"]

ø22.2[7/8"] ø22.2 [7/8"]168

192

216

240

ø28.58 [1-1/8"] ø28.58 [1-1/8"]

ø34.93 [1-3/8"]264

288

(2) Between BC controller and indoor unit (Sections a, b, c, d, e, and f )

Unit : mm [inch]

ø22.2 [7/8"]

ø19.05 [3/4"]

ø28.58 [1-1/8"]

ø34.93 [1-3/8"]

Refrigerant pipe size Indoor unit connection

Indoor unit

Liquid pipe Gas pipe Liquid pipe Gas pipe

P06, P08, P12, P15, P18 ø6.35 [1/4"] ø12.7 [1/2"] ø6.35 [1/4"] ø12.7 [1/2"]

P24, P27, P30

ø9.52 [3/8"] ø15.88 [5/8"] ø9.52 [3/8"] ø15.88 [5/8"]

P36, P48, P54

P72

P96 ø22.2

ø12.7 [1/2"]

(3) Between the main and sub BC controllers (Section C)

Refrigerant pipe size (Brazed connection on all models )

Indoor unit

Liquid pipe High-pressure gas pipe Low-pressure gas pipe

- P72
ø9.52 [3/8"]

P73 - P108

P109 - P126

ø12.7 [1/2"]

P145 - P168 ø15.88 [5/8"]

ø19.05 [3/4"]

[7/8"]

ø15.88 [5/8"] ø19.05 [3/4"]

ø19.05 [3/4"]

ø22.2 [7/8"]

Unit : mm [inch]

(Flare connection for all models)

ø19.05 [3/4"]

ø12.7 [1/2"]

ø22.2

[7/8"]

Unit : mm [inch]

ø22.2 [7/8"]

ø28.58 [1-1/8"]P127 - P144

Select the proper size pipes for the main unit based on the total capacity of the indoor units that are connected to both sub
BC controllers. Select the proper size pipes for the sub controller side based on the total capacity of the indoor units that are
connected to the sub controller.

HWE1116D GB

- 53 -

[ II Restrictions ]

2. Connecting the BC controller
(1) Size of the pipe that fits the standard BC controller ports

P72 - P120 models

Connection: Brazed connection

To outdoor unit

*1
Reducer
(Standard
supplied parts)

P18 model or below

P24 - P54 models P72 - P96 models

The ports of the BC controller accommodates the pipes on P24 - P54 models of indoor units.
To connect other types of indoor units, follow the procedure below.

BC controller

IndoorIndoor

*2

Junction pipe kit
(Model name:
CMY-R160-J)
(Optional accessory)

Indoor

Operation

Outdoor unit side PURY-P72TKMU-A

PURY-P72YKMU-A

PURY-P96TKMU-A
PURY-P96YKMU-A

PURY-P120TKMU-A
PURY-P120YKMU-A

Indoor unit side ø9.52 [3/8"] (Flare connection)

Branch joint (Model name:CMY-Y102S-G2)
(Optional accessory)

A

B

IndoorIndoorIndoor

3*

Maximum of 3 units per port
Total capacity of P54 or below
(All units connected to the same port
must be in the same operating mode.)

Unit : mm [inch]

Pipe sections

High-pressure side (gas) Low-pressure side (gas)

ø15.88 [5/8"]

(Brazed connection)

ø19.05 [3/4"]

(Brazed connection)

ø22.2 [7/8"]

ø19.05 [3/4"]

(Brazed connection)

(Brazed connection)

ø28.58 [1-1/8"]

(Brazed connection)

ø15.88 [5/8"]

(Flare connection)

* BC controllers can only be connected to P72 - P120 models of outdoor units.

HWE1116D GB

- 54 -

[ II Restrictions ]

1) To connect P06 - P18 models of indoor units use
the reducer that is supplied with the BC controller.

2) To connect P72 - P96 models of indoor units (or when the
total capacity of indoor units exceeds P55), use a junction
pipe kit and merge the two nozzles.

50 [1-31/32"]

Liquid pipe side:3/8F
(Flare connection)

Gas pipe side:5/8F

Liquid pipe side: 6.35[1/4"]ID
Gas pipe side: 12.7[1/2"]ID

(Flare connection)

Liquid pipe side:3/8F
(Flare connection)

Gas pipe side:5/8F
(Flare connection)

234 [9-7/32"]

Liquid pipe side: 9.52[3/8”]ID

Gas pipe side: 19.05[3/4”]ID(*1)

Supplied with a thermal insulation cover

Note) Use the flare nut that is supplied with the BC controller.

3) To connect multiple indoor units to a port (or to a junction pipe)

Maximum total capacity of connected indoor units: P54 or below (in a system with a junction pipe: P96 or below)
Maximum number of connectable indoor units: 3 units
Branch joint: Use CMY-Y102S-G2 (optional accessory).
Refrigerant pipe selection (size of the pipes A and B in the previous page) : Select the proper size pipes based

on the total capacity of the downstream indoor units, using the table below as a reference.

Total capacity of indoor units Liquid pipe Gas pipe

P54 or below ø9.52 [3/8"] ø15.88 [5/8"]

P55 - P72 ø9.52 [3/8"] ø19.05 [3/4"]

P73 - P96 ø9.52 [3/8"] ø22.2 [7/8"]

Unit : mm [inch]

HWE1116D GB

- 55 -

[ II Restrictions ]

(2) Size of the pipe that fits the main BC controller ports

P72 - P288 models

Branch joint (Model name:CMY-Y102S-G2)
(Optional accessory)

To outdoor unit

Connection: Brazed connection

BC controller (main)

*1
Reducer
(Standard supplied parts)

Indoor Indoor Indoor

P18 model or below

P24 - P54 models P72 - P96 models

*2
Junction pipe kit
(Model name:CMY-R160-J)
(Optional accessory)

A B

Indoor Indoor Indoor

3*

Maximum of 3 units per port
Total capacity of P54 or below
(All units connected to the same port
must be in the same operating mode.)

The ports of the BC controller accommodates the pipes on P24 - P54 models of indoor units. To connect other types of indoor
units, follow the procedure below.

1) To connect P06 - P18 models of indoor units use the reducer that is supplied with the BC controller.

2) To connect the P72 through P96 models of indoor units (or when the total capacity of indoor units is P55 or above), use
an optional twinning pipe kit (Model: CMY-R160-J) to merge two ports before connecting them.

3) To connect multiple indoor units to a port (or to a junction pipe)

Maximum total capacity of connected indoor units: P54 or below (in a system with a junction pipe: P96 or below)
Maximum number of connectable indoor units: 3 units
Branch joint: Use CMY-Y102S-G2 (optional accessory).
Refrigerant pipe selection (size of the pipes in sections A and B in the figure above): Select the proper based on the total

capacity of the downstream indoor units, using the table below as a reference.

Total capacity of indoor units Liquid pipe Gas pipe

P54 or below ø9.52 [3/8"] ø15.88 [5/8"]

P55 - P72 ø9.52 [3/8"] ø19.05 [3/4"]

P73 - P96 ø9.52 [3/8"] ø22.2 [7/8"]

Operation

Pipe sections

High pressure side (Liquid) Low-pressure side (Gas)

Outdoor unit
side

PURY-P72TKMU-A
PURY-P72YKMU-A

ø15.88 [5/8"]

(Brazed connection)

PURY-P96TKMU-A
PURY-P96YKMU-A

PURY-P120TKMU-A

ø19.05 [3/4"]

(Brazed connection)

PURY-P120YKMU-A

PURY-P144TKMU-A
PURY-P144Y(S)KMU-A

PURY-P168TSKMU-A
PURY-P168YSKMU-A

ø22.2 [7/8"]

(Brazed connection)

PURY-P192TSKMU-A
PURY-P192YSKMU-A

PURY-P216TSKMU-A
PURY-P216YSKMU-A

PURY-P240TSKMU-A
PURY-P240YSKMU-A

PURY-P264TSKMU-A

ø28.58 [1-1/8"]

(Brazed connection)

PURY-P264YSKMU-A

PURY-P288TSKMU-A
PURY-P288YSKMU-A

Indoor unit side ø9.52 [3/8"] (Flare connection) ø15.88 [5/8"] (Flare connection)

Unit : mm [inch]

Unit : mm [inch]

ø19.05 [3/4"]

(Brazed connection)

ø22.2 [7/8"]

(Brazed connection)

ø28.58 [1-1/8"]

(Brazed connection)

ø34.93 [1-3/8"]

(Brazed connection)

HWE1116D GB

- 56 -

[ II Restrictions ]

(3) Size of the pipe that fits the sub BC controller ports

Branch joint (Model name:CMY-Y102S-G2)
(Optional accessory)

A B

Indoor Indoor Indoor

3*

Maximum of 3 units per port

To Main BC controller

*1
Reducer
(Standard supplied parts)

Indoor Indoor Indoor

P18 model or below

Connection: Brazed connection

*2

BC controller (sub)

Junction pipe kit
(Model name:
CMY-R160-J)
(Optional accessory)

P24 - P54 models P72 - P96 models

Total capacity of P54 or below
(All units connected to the same port
must be in the same operating mode.)

The ports of the BC controller accommodates the pipes on P24 - P54 models of indoor units. To connect other types of indoor
units, follow the procedure below.

1) To connect P06 - P18 models of indoor units use the reducer that is supplied with the BC controller.

2) To connect the P72 through P96 models of indoor units (or when the total capacity of indoor units is P55 or above), use
an optional twinning pipe kit (Model: CMY-R160-J) to merge two ports before connecting them.

3) To connect multiple indoor units to a port (or to a junction pipe)

Maximum total capacity of connected indoor units: P54 or below (in a system with a junction pipe: P96 or below)
Maximum number of connectable indoor units: 3 units
Branch joint: Use CMY-Y102S-G2 (optional accessory).
Refrigerant pipe selection (size of the pipes in sections A and B in the figure above): Select the proper based on the total

capacity of the downstream indoor units, using the table below as a reference.

Total capacity of indoor units Liquid pipe Gas pipe

P54 or below ø9.52 [3/8"] ø15.88 [5/8"]

P55 - P72 ø9.52 [3/8"] ø19.05 [3/4"]

P73 - P96 ø9.52 [3/8"] ø22.2 [7/8"]

Operation Pipe sections

Total capacity of the in­door units that are con­nected to the BC

High-pressure side

(liquid)

Low-pressure side

(gas)

controller

On the BC controller
side

P72 model or below

P73 - P108

ø15.88 [5/8"]

(Brazed connection)

ø19.05 [3/4"]

ø19.05 [3/4"]

(Brazed connection)

ø22.2 [7/8"]

(Brazed connection)

(Brazed connection)

P109 - P126

P127 - P144

P145 - P168

ø22.2 [7/8"]

(Brazed connection)

ø28.58 [1-1/8"]

(Brazed connection)

Unit : mm [inch]

Unit : mm [inch]

Liquid pipe side

ø9.52 [3/8"]

(Brazed connection)

ø12.7 [1/2"]

(Brazed connection)

ø15.88 [5/8"]

(Brazed connection)

HWE1116D GB

- 57 -

[ II Restrictions ]

HWE1116D GB

- 58 -

III

Outdoor Unit Components

[1] Outdoor Unit Components and Refrigerant Circuit .......................................................... 61

[2] Control Box of the Outdoor Unit....................................................................................... 65

[3] Outdoor Unit Circuit Board............................................................................................... 70

[4] BC Controller Components .............................................................................................. 81

[5] Control Box of the BC Controller...................................................................................... 84

[6] BC Controller Circuit Board.............................................................................................. 85

HWE1116D GB

- 59 -

HWE1116D GB

- 60 -

[ III Outdoor Unit Components ]

III Outdoor Unit Components

[1] Outdoor Unit Components and Refrigerant Circuit

1. Front view of a outdoor unit
(1) PURY-P72, P96TKMU-A

PURY-P72, P96YKMU-A

Fin guardFin guard

Fan guardFan guard

FanFan

Control boxControl box

Transformer box

Transformer box
(YKMU-A only)

(YKMU-A only)

Heat exchangerHeat exchanger

Side panelsSide panels

HWE1116D GB

Front panelsFront panels

- 61 -

[ III Outdoor Unit Components ]

Fan guards

Fans

Control box

Fan box

Heat exchanger

Transformer box

(YKMU-A only)

Front panels

Fin guard

Side panel

Side panel

(2) PURY-P120, P144TKMU-A

PURY-P120, P144YKMU-A

Fin guard

Fan guards

Fans

Side panel

Control box

Fan box

Side panel

Heat exchanger

Transformer box

(YKMU-A only)

Front panels

HWE1116D GB

- 62 -

[ III Outdoor Unit Components ]

2. Refrigerant circuit
(1) PURY-P72, P96TKMU-A

PURY-P72, P96YKMU-A

Solenoid valve (SV9)

4-way valve (21S4a)

Check valve
(CV7a)

Low-pressure sensor
(63LS)

High-pressure switch
(63H1)

High-pressure sensor (63HS1)

Transformer box

Transformer box
(YKMU-A only)

(YKMU-A only)

Check valve
(CV5a)

Solenoid valve
(SV5b)

Solenoid valve block

(SV4d, SV4b, SV4a)

Refrigerant service
valve on the low
pressure side

Refrigerant service
valve on the high
pressure side

Accumulator

Compressor
cover

Solenoid valve
(SV1a)

Compressor

Oil separator

High-pressure check joint

Low-pressure check joint

Linear expansion
valve (LEV5a)

Check valve
(CV3a)

Check valve
(CV9a)

Check valve
(CV2a)

HWE1116D GB

Check valve
(CV6a)

Check valve
(CV4a)

Check valve
(CV8a)

- 63 -

[ III Outdoor Unit Components ]

(2) PURY-P120, P144TKMU-A

PURY-P120, P144YKMU-A

Check valve
(CV7a)

4-way valve
(21S4a)

4-way valve
(21S4b)

Bidirectional
solenoid
valve (SV4c)

Check valve
(CV7b)

Check valve
(CV6b)

Check valve
(CV4b)

Solenoid valve (SV9)

Solenoid valve block

(SV4d, SV4b, SV4a)

Low-pressure
sensor
(63LS)

High-pressure switch
(63H1)

High-pressure
sensor
(63HS1)

Low-pressure check joint

High-pressure check joint

Compressor cover

Check valve (CV5a)

Check valve
(CV5b)

Check valve
(CV3a)

Check valve
(CV2b)

Check valve
(CV2a)

Linear expansion
valve (LEV5a)

Refrigerant service valve
on the low pressure side

Refrigerant service
valve on the high
pressure side

Oil separator

Compressor

Solenoid valve (SV1a)

Solenoid valve (SV5b)

Accumulator

Linear expansion
valve (LEV5b)

Check valve
(CV6a)

Check valve
(CV4a)

Check valve
(CV8a)

The YKMU model has a transformer box.

HWE1116D GB

- 64 -

[ III Outdoor Unit Components ]

FAN INV board

M-NET board

INV board

Noise filter

(R1) Note 2

DC reactor

(DCL)

[2] Control Box of the Outdoor Unit

<HIGH VOLTAGE WARNING>

Control box houses high-voltage parts.
When opening or closing the front panel of the control box, do not let it come into contact with any of
the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes,
and check that the the voltage of the electrolytic capacitor (Inverter main circuit) is 20VDC or below.
(It takes about 10 minutes to discharge electricity after the power supply is turned off.)

1. PURY-P72TKMU-A

Rush current
protection resistor

Electromagnetic
relay (72C)

Control board

Terminal block
for power supply
(TB1)

Note 1

Ground terminal

Terminal block for
transmission line
(TB3, TB7)

1) Exercise caution not to damage the bottom and the front panel of the control box. Damage to these parts affect the water­proof and dust proof properties of the control box and may result in damage to its internal components.

2) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the ter­minals to remove them.

3) Control box houses high temperature parts. Be well careful even after turning off the power source.

4) Perform the service after disconnecting the fan board connector (CNINV) and the inverter board connector (CN1 or

CNFAN). To plug or unplugconnectors, check that the outdoor unit fan is not rotating and that the voltage of capac­itor in the main circuit is 20 VDC or below. The capacitor may collect a charge and cause an electric shock when the
outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.

5) To connect wiring to TB7, check that the voltage is 20 VDC or below.

6) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN1 or CNFAN) back to the inverter
board after servicing.

7) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that
the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less. It takes about 10 minutes to discharge electricity
after the power supply is turned off.

8) When the power is turned on, the compressor is energized even while it is not operating. Before turning on the power, discon­nect all power supply wires from the compressor terminal block, and measure the insulation resistance of the compressor.
Check the compressor for a graound fault. If the insulation resistance is 1.0 M or below, connect all power supply wires to
the compressor and turn on the power to the outdoor unit. The liquid refrigerant in the compressor will evaporate by energizing
the compressor.

HWE1116D GB

- 65 -

[ III Outdoor Unit Components ]

FAN INV board

Control board

M-NET board

IPM

Note 2

Noise filter

Rush current
protection resistor

(R1) Note 2

DC reactor

(DCL)

INV board

Current sensor

(ACCT1)

Current sensor

(DCCT1)

Current sensor

(ACCT2)

Diode stack

Electromagnetic
contactor (72C)

2. PURY-P96, P120, P144TKMU-A

Terminal block
for power supply
(TB1)

Ground
terminal

Note 1

Smoothing
capacitor (C1)

Terminal block for
transmission line
(TB3, TB7)

1) Exercise caution not to damage the bottom and the front panel of the control box. Damage to these parts affect the water­proof and dust proof properties of the control box and may result in damage to its internal components.

2) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the ter­minals to remove them.

3) Control box houses high temperature parts. Be well careful even after turning off the power source.

4) Perform the service after disconnecting the fan board connector (CNINV) and the inverter board connector (CN1 or

CNFAN). To plug or unplugconnectors, check that the outdoor unit fan is not rotating and that the voltage of capac­itor in the main circuit is 20 VDC or below. The capacitor may collect a charge and cause an electric shock when the
outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.

5) To connect wiring to TB7, check that the voltage is 20 VDC or below.

6) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN1 or CNFAN) back to the inverter
board after servicing.

7) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that
the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less. It takes about 10 minutes to discharge electricity
after the power supply is turned off.

8) When the power is turned on, the compressor is energized even while it is not operating. Before turning on the power, discon­nect all power supply wires from the compressor terminal block, and measure the insulation resistance of the compressor.
Check the compressor for a graound fault. If the insulation resistance is 1.0 M or below, connect all power supply wires to
the compressor and turn on the power to the outdoor unit. The liquid refrigerant in the compressor will evaporate by energizing
the compressor.

HWE1116D GB

- 66 -

[ III Outdoor Unit Components ]

INV board

Noise filter

DC reactor

(DCL)

(72C)

Capacitor

(C100)

3. PURY-P72, P96, P120, P144YKMU-A

Electromagnetic relay

Note 2

Terminal block
for power supply
(TB1)

Fuse (F4)

Fuse (F5)

Ground terminal

Rush current protection resistor
(R1, R5) Note 2

FAN INV board

Note 1

Control board

M-NET board

Terminal block for transmission line
(TB3, TB7)

1) Exercise caution not to damage the bottom and the front panel of the control box. Damage to these parts affect the water­proof and dust proof properties of the control box and may result in damage to its internal components.

2) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the ter­minals to remove them.

3) Control box houses high temperature parts. Be well careful even after turning off the power source.

4) Perform the service after disconnecting the fan board connector (CNINV) and the inverter board connector (CN1 or

CNFAN). To plug or unplugconnectors, check that the outdoor unit fan is not rotating and that the voltage of capac­itor in the main circuit is 20 VDC or below. The capacitor may collect a charge and cause an electric shock when the
outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.

5) To connect wiring to TB7, check that the voltage is 20VDC or below.

6) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN1 or CNFAN) back to the inverter
board after servicing.

7) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that
the capacitor voltage (inverter main circuit) has dropped to 20 V DC or less. It takes about 10 minutes to discharge electricity
after the power supply is turned off.

8) When the power is turned on, the compressor is energized even while it is not operating. Before turning on the power, discon­nect all power supply wires from the compressor terminal block, and measure the insulation resistance of the compressor.
Check the compressor for a graound fault. If the insulation resistance is 1.0 M or below, connect all power supply wires to
the compressor and turn on the power to the outdoor unit. The liquid refrigerant in the compressor will evaporate by energizing
the compressor.

HWE1116D GB

- 67 -

[ III Outdoor Unit Components ]

4. Transformer Box (PURY-P72, P96, P120, P144YKMU-A)

Transformer
(T03)

Transformer
(T02)

HWE1116D GB

- 68 -

[ III Outdoor Unit Components ]

5. Fan Box (PURY-P120, P144TKMU-A)

(PURY-P120, P144YKMU-A)

FAN INV board

Connector board

Note 1

1) Handle the fan box with care. If the front or the bottom panel becomes damaged, water or dust may enter the fan box, dam­aging its internal parts.

2) Perform the service after disconnecting the fan board connector (CNINV) and the connect board connector (CN103).

To plug or unplugconnectors, check that the outdoor unit fan is not rotating and that the voltage of capacitor in the
main circuit is 20 VDC or below. The capacitor may collect a charge and cause an electric shock when the outdoor
unit fan rotates in windy conditions.

3) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN103) back to the connect board
after servicing.

HWE1116D GB

- 69 -

[ III Outdoor Unit Components ]

(208/230 VAC)

[3] Outdoor Unit Circuit Board

1. Outdoor unit control board

For information about the display of SW4 function settings, refer to sectionVII [1] Functions and Factory Settings of the
Dipswitches(page 137)

HWE1116D GB

- 70 -

[ III Outdoor Unit Components ]

2. M-NET board

Grounding

CN04
Bus voltage input
P
N

CN102

Power supply output for centralized
control system (30VDC)
Indoor/outdoor transmission line
input/output (30VDC)

Grounding

Grounding

TB3
Indoor/outdoor transmission block

Ground terminal for
transmission line

CNS2
Transmission line
input/output for
centralized control
system (30VDC)

TB7
Terminal block for
centralized control
transmission line

CNIT
12VDC Input
GND
5VDC Input
Power supply
detection output
Power supply
ON/OFF signal input

LED1
Power supply for
indoor
transmission line

TP1,2
Check pins for
indoor/outdoor
transmission line

HWE1116D GB

- 71 -

[ III Outdoor Unit Components ]

3. INV board

(1) PURY-P72TKMU-A

F001
Fuse
250 VAC 3.15A

SC-P1
Diode rectifier
output (P)

CNVDC
Bus voltage output

P
P
N
N

CNFAN
Bus voltage output

N
P

LED4
Lit during normal
CPU operation

LED1
Inverter in normal operation (Lit)
/Error (blinking)

CN2

Serial signal output
GND
17VDC input
17VDC output

CN4

GND (FAN INV board)
Serial communication signal input

IGBT
Back

SC-P2
Bus voltage input (P)

C011 - C016
Smoothing capacitor

SC-T

Input (L3)

TB-P (Note 1)
Bus voltage
check terminal (P)

TB-N (Note 1)
Bus voltage
check terminal (N)

SC-S
Input (L2)

SC-R
Input (L1)

CT11
Current sensor (U)

CT12
Current sensor (W)

SW001

ON: No-load
operation
setting
OFF: Normal
operation
setting

Set to OFF

PSH01 - 03
Overcurrent
detection
resistor

SC-V
Inverter output (V)

SC-W
Inverter output (W)

SC-U
Inverter output (U)

1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that
the electrolytic capacitor voltage (inverter main circuit) has dropped to 20 VDC or less. It takes about 10 minutes to discharge
electricity after the power supply is turned off.

2) Control box houses high temperature parts. Be well careful even after turning off the power source.

3) Perform the service after disconnecting the fan board connector (CNINV) and the inverter board connector (CN1 or

CNFAN). To plug or unplug connectors, check that the outdoor unit fan is not rotating and that the voltage of capac­itor in the main circuit is 20 VDC or below. The capacitor may collect a charge and cause an electric shock when the
outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.

4) To connect wiring to TB7, check that the voltage is 20 VDC or below.

5) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN1 or CNFAN) back to the inverter
board after servicing.

6) When the power is turned on, the compressor is energized even while it is not operating. Before turning on the power, discon­nect all power supply wires from the compressor terminal block, and measure the insulation resistance of the compressor.
Check the compressor for a ground fault. If the insulation resistance is 1.0 M or below, connect all power supply wires to the
compressor and turn on the power to the outdoor unit. The liquid refrigerant in the compressor will evaporate by energizing
the compressor.

HWE1116D GB

- 72 -

[ III Outdoor Unit Components ]

(2) PURY-P96, P120, P144TKMU-A

1) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the ter­minals to remove them.

2) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that
the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less. It takes about 10 minutes to discharge electricity
after the power supply is turned off.

3) Control box houses high temperature parts. Be well careful even after turning off the power source.

4) Perform the service after disconnecting the fan board connector (CNINV) and the inverter board connector (CN1 or

CNFAN). To plug or unplug connectors, check that the outdoor unit fan is not rotating and that the voltage of capac­itor in the main circuit is 20 VDC or below. The capacitor may collect a charge and cause an electric shock when the
outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.

5) To connect wiring to TB7, check that the voltage is 20 VDC or below.

6) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN1 or CNFAN) back to the inverter
board after servicing.

7) When the power is turned on, the compressor is energized even while it is not operating. Before turning on the power, discon­nect all power supply wires from the compressor terminal block, and measure the insulation resistance of the compressor.
Check the compressor for a ground fault. If the insulation resistance is 1.0 M or below, connect all power supply wires to the
compressor and turn on the power to the outdoor unit. The liquid refrigerant in the compressor will evaporate by energizing
the compressor.

HWE1116D GB

- 73 -

[ III Outdoor Unit Components ]

(3) PURY-P72, P96, P120, P144YKMU-A

1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that
the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less. It takes about 10 minutes to discharge electricity
after the power supply is turned off.

2) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the ter­minals to remove them.

3) Control box houses high temperature parts. Be well careful even after turning off the power source.

4) Perform the service after disconnecting the fan board connector (CNINV) and the inverter board connector (CN1 or

CNFAN). To plug or unplugb connectors, check that the outdoor unit fan is not rotating and that the voltage of ca­pacitor in the main circuit is 20 VDC or below. The capacitor may collect a charge and cause an electric shock when
the outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.

5) To connect wiring to TB7, check that the voltage is 20 VDC or below.

6) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN1 or CNFAN) back to the inverter
board after servicing.

7) When the power is turned on, the compressor is energized even while it is not operating. Before turning on the power, discon­nect all power supply wires from the compressor terminal block, and measure the insulation resistance of the compressor.
Check the compressor for a ground fault. If the insulation resistance is 1.0 M or below, connect all power supply wires to the
compressor and turn on the power to the outdoor unit. The liquid refrigerant in the compressor will evaporate by energizing
the compressor.

HWE1116D GB

- 74 -

[ III Outdoor Unit Components ]

4. Fan board

(1) PURY-P72, P96, P120, P144TKMU-A

1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that
the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less. It takes about 10 minutes to discharge electricity
after the power supply is turned off.

2) Control box houses high temperature parts. Be well careful even after turning off the power source.

3) Perform the service after disconnecting the fan board connector (CNINV) and the inverter board connector (CN1 or

CNFAN). To plug or unplugconnectors, check that the outdoor unit fan is not rotating and that the voltage of capac­itor in the main circuit is 20 VDC or below. The capacitor may collect a charge and cause an electric shock when the
outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.

4) To connect wiring to TB7, check that the voltage is 20 VDC or below.

5) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN1 or CNFAN) back to the inverter
board after servicing.

HWE1116D GB

- 75 -

[ III Outdoor Unit Components ]

(2) PURY-P72, P96, P120, P144YKMU-A

1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that
the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less. It takes about 10 minutes to discharge electricity
after the power supply is turned off.

2) Control box houses high temperature parts. Be well careful even after turning off the power source.

3) Perform the service after disconnecting the fan board connector (CNINV) and the inverter board connector (CN1 or

CNFAN). To plug or unplugconnectors, check that the outdoor unit fan is not rotating and that the voltage of capac­itor in the main circuit is 20 VDC or below. The capacitor may collect a charge and cause an electric shock when the
outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.

4) To connect wiring to TB7, check that the voltage is 20 VDC or below.

5) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN1 or CNFAN) back to the inverter
board after servicing.

HWE1116D GB

- 76 -

[ III Outdoor Unit Components ]

Ground

Ground

TB32
Bus voltage input (P)

CN110
Power supply detection
signal output

CN012
Output

CN001
Input

CNR1
Rush current
protection
resistor (R1)
connection

TB21
Input/output (L1)

TB22
Input/output (L2)

TB23
Input/output (L3)

F002
Fuse
250 VAC 6.3A T

F001
Fuse
250 VAC 6.3A T

TB31
Bus voltage output (P)

X001
Electromagnetic
relay (72C)

CN72C
72C drive signal input

L3
L2
L1

L2

L1

5. Noise Filter

(1) PURY-P72TKMU-A

HWE1116D GB

- 77 -

[ III Outdoor Unit Components ]

(2) PURY-P96, P120, P144TKMU-A

CNR1
Rush current
protection registor
(R1) connection

CN012
Output

L1
L2

Ground

F001
Fuse
250 VAC 6.3A T

CN110
Power supply detection
signal output

Ground

F003
Fuse
250 VAC 6.3A T

TB31
Bus voltage output (P)

CN72C
72C drive input

X001
Electromagnetic relay
(72C)

TB42
Bus voltage output (N)

Diode stack
Rectifier voltage input
(Diode stack output)

Output
(Diode stack input)

F002
Fuse
250 VAC 6.3A T

CN001
Input

L3
L2
L1

TB21
Input (L1)

TB22
Input (L2)

TB23
Input (L3)

HWE1116D GB

- 78 -

[ III Outdoor Unit Components ]

(3) PURY-P72, P96, P120, P144YKMU-A

CN4
Output
(Rectified L2-L3 current)
P
N

CN2
Surge absorber circuit
Surge absorber circuit
Short circuit
Short circuit

F1,F2,F3,F4
Fuse
250VAC 6.3A

Grounding

CN1A
Input
L1

CN5
Output
(Rectified L2-L3 current)
P
N

CN6
Input
L2
L3

Grounding

CN1B
Input
L3
L2

HWE1116D GB

TB21
Input/output(L1)

TB22
Input/output(L2)

- 79 -

TB23
Input/output(L3)

[ III Outdoor Unit Components ]

6. Connect board

1

1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that
the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less. It takes about 10 minutes to discharge electricity
after the power supply is turned off.

2) Control box houses high temperature parts. Be well careful even after turning off the power source.

3) Perform the service after disconnecting the fan board connector (CNINV) and the connector board connector

(CN103). To plug or unplugconnectors, check that the outdoor unit fan is not rotating and that the voltage of capac­itor in the main circuit is 20 VDC or below. The capacitor may collect a charge and cause an electric shock when the
outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.

4) To connect wiring to TB7, check that the voltage is 20 VDC or below.

5) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN103) back to the connector board
after servicing.

HWE1116D GB

- 80 -

[ III Outdoor Unit Components ]

[4] BC Controller Components

1. CMB-P NU-G, GA, HA

(1) Front

(2) Rear view <G type>

Liquid pipe (Indoor unit side)

Gas pipe (Indoor unit side)

Gas/Liquid separator

Tube in tube heat exchanger

TH12

PS1

TH11

SVM1

LEV3
LEV1

PS3

TH16

TH15

HWE1116D GB

- 81 -

[ III Outdoor Unit Components ]

(3) Rear view <GA type>

Gas/Liquid separator

Tube in tube heat exchanger

(4) Rear view <HA type>

TH11

TH12

LEV2

TH16

PS3

TH15

PS1

LEV3

LEV1

SVM2

SVM1

PS3

Tube in tube
heat exchanger

Gas/Liquid separator

TH12

TH11

PS1

TH15

LEV3

LEV1

LEV2

SVM2

SVM2b

SVM1b

SVM1

TH16

HWE1116D GB

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[ III Outdoor Unit Components ]

2. CMB-P NU-GB, HB

(1) Front

(2) Rear view

Liquid pipe (Indoor unit side)

Gas pipe (Indoor unit side)

TH12

LEV3

TH15

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[ III Outdoor Unit Components ]

[5] Control Box of the BC Controller

1. CMB-P1016NU-G, GA, HA

Transformer

Terminal block for
power supply

Terminal block for
transmission line

Relay board

BC controller board

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[ III Outdoor Unit Components ]

[6] BC Controller Circuit Board

1. BC controller circuit board (BC board)

SW4

HWE1116D GB

SW5

SW6

SW1SW2

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[ III Outdoor Unit Components ]

2. RELAY BOARD (RELAY 4 board)

3. RELAY BOARD (RELAY 10 board)

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IV

Remote Controller

[1] Functions and Specifications of MA and ME Remote Controllers ................................... 89

[2] Group Settings and Interlock Settings via the ME Remote Controller .............................90

[3] Interlock Settings via the MA Remote Controller ............................................................. 94

[4] Using the built-in Temperature Sensor on the Remote Controller ...................................95

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HWE1116D GB

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[ IV Remote Controller ]

IV Remote Controller

[1] Functions and Specifications of MA and ME Remote Controllers

There are two types of remote controllers: ME remote controller, which is connected on the indoor-outdoor transmission
line, and MA remote controller, which is connected to each indoor unit.

1. Comparison of functions and specifications between MA and ME remote controllers

Functions/specifications MA remote controller

*1*2

ME remote controller

*2*3

Remote controller address settings Not required Required

Indoor/outdoor unit address set­tings

Wiring method Non-polarized 2-core cable

Not required (required only by a system
with one outdoor unit)

*4

Required

Non-polarized 2-core cable

To perform a group operation, daisy-

chain the indoor units using non-polar­ized 2-core cables.

Remote controller connection Connectable to any indoor unit in the

group

Interlock with the ventilation unit Each indoor unit can individually be in-

terlocked with a ventilation unit. (Set up
via remote controller in the group.)

Changes to be made upon group­ing change

MA remote controller wiring between in­door units requires rewiring.

Connectable anywhere on the indoor-out­door transmission line

Each indoor unit can individually be inter­locked with a ventilation unit. (Set up via
remote controller.)

Either the indoor unit address and remote
controller address must both be changed,
or the registration information must be
changed via MELANS.

*1. MA remote controller refers to MA remote controller (PAR-20MAU, PAR-21MAAU, PAR-30MAAU), Simple MA Remote

Controller, and wireless remote controller.

*2. Either the MA remote controller or the ME remote controller can be connected when a group operation of units in a sys-

tem with multiple outdoor units is conducted or when a system controller is connected.

*3. ME remote controller refers to ME remote controller and Simple ME Remote Controller.

*4. Depending on the system configuration, some systems with one outdoor unit may require address settings.

2. Remote controller selection criteria

MA remote controller and ME remote controller have different functions and characteristics. Choose the one that better suits
the requirements of a given system. Use the following criteria as a reference.

MA remote controller

*1*2

There is little likelihood of system expansion and group-

ing changes.

Grouping (floor plan) has been set at the time of instal-

lation.

ME remote controller

There is a likelihood of centralized installation of remote

controllers, system expansion, and grouping changes.

Grouping (floor plan) has not been set at the time of in-

stallation.

*1*2

To connect the remote controller directly to the OA pro-

cessing unit.

*1. ME remote controller and MA remote controller cannot both be connected to the same group of indoor units.

*2. A system controller must be connected to a system to which both MA remote controller and ME remote controller are con-

nected.

<System with MA remote controller> <System with ME remote controllers>

Outdoor unit

M-NET transmission line
(indoor/outdoor transmission line)

groupgroup

Outdoor unit

M-NET transmission line
(indoor/outdoor transmission line)

groupgroup

BC

controller

MA remote controller

HWE1116D GB

Indoor unit

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BC

controller

ME remote controller

Indoor unit

[ IV Remote Controller ]

[2] Group Settings and Interlock Settings via the ME Remote Controller

1. Group settings/interlock settings

Make the following settings to perform a group operation of units that are connected to different outdoor units or to manually set up the
indoor/outdoor unit address.

(A) Group settings...........Registration of the indoor units to be controlled with the remote controller,

and search and deletion of registered information.

(B) Interlock settings........Registration of LOSSNAY units to be interlocked with the indoor units,

and search and deletion of registered information

[Operation Procedures]

(1) Address settings

Register the indoor unit to be controlled with the remote controller.

1

Bring up either one of the following displays on the remote controller:
The blinking display of HO, which appears when the power is turned on, or the
normal display, which appears when the unit is stopped. The display window must
look like one of the two figures below to proceed to the next step.

C

G

E

MODE TIMER

PAR-F27MEA-US

SET TEMP.

TIMER SET

CLOCKONOFF

FAN SPEED

LOUVER

ON/OFF

AIR DIRECTION

VENTILATION

FILTER

CHECK

F

?

A

TEST

D

[Blinking display of HO ]

Bring up the Group Setting window.

2

-Press and hold buttons [FILTER] and [LOUVER]
simultaneously for 2 seconds to bring up the display as

A

B

[Normal display]

shown below.

Indoor unit address display window

3

Select the unit address.

-

Select the address of the indoor unit to be registered by pressing

button

through the addresses.

4

Register the indoor unit whose address appears on the

C

[SET TEMP. ( ) or ( )] to advance or go back

display.

- Press button [TEST] to register the indoor unit address

D

whose address appears on the display.

- If registration is successfully completed, unit type will appear
on the display as shown in the figure below.

- If the selected address does not have a corresponding indoor
unit, an error message will appear on the display. Check the
address, and try again.

<Successful completion of registration>

Unit type (Indoor unit in this case)

<Deletion error>

H

B

(B) Interlock Settings (A) Group Settings

6

Bring up the Interlock Setting window.

-Press button [MODE] to bring up the following display.

G

Press again to go back to the Group Setting window as shown
under step .

Indoor unit
address
display window

7

Bring up the address of the indoor unit and the address of the

2

Interlocked unit
address
display window

Both the indoor unit address and
interlocked unit address will be
displayed together.

To search for an address,
go to section (2) Address Search.

LOSSNAY to be interlocked on the display.

- Select the address of the indoor unit to be registered by pressing

C

button [SET TEMP. ( ) or ( )] to advance or go back through
the addresses.

- Select the address of the LOSSNAY unit to be interlocked by
pressing button [TIMER SET ( ) or ( )] to advance or go back

H

through the interlocked unit addresses.

8

Make the settings to interlock LOSSNAY units with indoor
units.

- Press button [TEST] while both the indoor unit address and

D

the address of the LOSSNAY units to be interlocked
are displayed to enter the interlock setting.

- Interlock setting can also be made by bringing up the
LOSSNAY address in the indoor unit address display
window and the indoor unit address in the interlocked unit
address display window.

blinks to indicate a registration error.
(Indicates that selected address does not have a
corresponding unit.)

5

To register the addresses for multiple indoor units, repeat
steps and above.

3

4

To search for an address,
go to section (2) Address Search.

Next page.

HWE1116D GB

If registration is successfully
completed, the two displays as
shown on the left will appear
alternately.

(Displayed alternately)

If the registration fails,
will blink on the display.
(Indicates that the selected
address does not have a
corresponding unit.)

NOTE : Interlock all the indoor units in the group with the
LOSSNAY units; otherwise, the LOSSNAY units will
not operate.

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[ IV Remote Controller ]

(C) To return to the normal display
When all the group settings and interlock settings are made, take the
following step to go back to the normal display.

10

Press and hold buttons [FILTER] and [LOUVER]

A

B

simultaneously for 2 seconds to go back to the
window as shown in step .

1

(2) Address search

To search for the address of indoor units that have been entered into
the remote controller, follow steps and .

1

2

(A) To search group settings

11

Bring up the Group Setting window.

- Each pressing of button [TIMER ] will bring up the address of a

E

registered indoor unit and its unit type on the display.

<Entry found>

Unit type
(Indoor unit in this case)

<No entries found>

- When only one unit address is registered, the same address
will remain on the display regardless of how many times the
button is pressed.

- When the address of multiple units are registered
(i.e. 011, 012, 013 ), they will be displayed one at a time in
an ascending order with each pressing of button [TIMER ] .

E

Repeat steps and in the previous page to interlock

9

all the indoor units in a group with the LOSSNAY unit.

To go back to the normal display,
follow step

7

8

To search for an address,

10

go to section (2) Address Search.

(B) Interlock setting search

After performing step , proceed as follows:

12

Bring up the address of the indoor unit to be searched on

6

the display.

- Select the address of the indoor unit to be searched by pressing

H

button [TIMER SET ( ) or ( )] to advance or go back
through the interlocked addresses.

LOSSNAY can be searched in the same manner by bringing up
the LOSSNAY address in the Interlocked unit address display window.

13

Bring up on the display the address of the LOSSNAY unit
that was interlocked with the indoor unit in step .

- With each pressing of button [TIMER], the address of the

E

LOSSNAY and indoor unit that is interlocked with it will be
displayed alternately.

Address of an interlocked
LOSSNAY unit

(Displayed alternately)

12

14

To delete an address, go to
section (3) Address Deletion.

Bring up the address of another registered unit on the
display.

- After completing step , a subsequent pressing of button

E

[TIMER] will bring up the address of another registered

13

unit.
(The display method is the same as the one in step .)

To go back to the normal display,
follow step

10

Address of another
interlocked unit

(Displayed alternately)

To delete an address,

(3) Address deletion

go to section (3) Address Deletion .

The addresses of the indoor units that have been entered into the remote controller can be deleted by deleting the group settings.
The interlock settings between units can be deleted by deleting the interlock settings.
Follow the steps in section (2) Address Search to find the address to be deleted and perform deletion with the address being displayed in the
display window. To delete an address, the address must first be bought up on the display.

15

Delete the registered indoor unit address or the interlock setting between units.

- Press button ? [CLOCK ON OFF] twice while either the indoor unit address or the address of the interlocked unit is displayed on the

F

display to delete the interlock setting.

13

HWE1116D GB

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