Mitsubishi PURY-HP72TKMU-A, PURY-HP192T, PURY-HP72TKMU-A-H, PURY-HP72YKMU-A, PURY-HP72YKMU-A-H Service Handbook

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Safety Precautions

Please read the following safety precautions carefully before installing the unit to ensure safety.

Indicates a risk of death or serious injury.

Indicates a risk of serious injury or structural damage.

Make sure that this manual is passed on to the end user to retain for future reference. Retain this manual for future reference. When the unit is reinstalled or repaired, have this manual available to those who pro-

vide these services. Make sure that this manual is passed on to any future users.

All electric work must be performed by qualified personnel. Air tightness test must be performed by qualified personnel.

[1] General Precautions

General Precautions

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.

Do not install the unit in a place where large amounts of oil, steam, organic solvents, or corrosive gases, such as sulfuric gas, are present or where acidic/alkaline solutions or sprays containing sulfur are used frequently. These substances can compromise the performance of the unit or cause certain components of the unit to corrode, which can result in refrigerant leakage, water leakage, injury, electric shock, malfunctions, smoke, or fire.

Do not try to defeat the safety features of the unit or make unauthorized setting changes. Forcing the unit to operate the unit by defeating the safety features of the devices such as the pressure switch or the temperature switch, making unauthorized changes to the switch settings, or using accessories other than the ones recommended by Mitsubishi Electric may result in smoke, fire, or explosion.

To reduce the risk of shorting, current leakage, electric shock, malfunctions, smoke, or fire, do not splash water on electric parts.

To reduce the risk of electric shock, malfunctions, smoke or fire, do not operate the switches/buttons or touch other electrical parts with wet hands.

To reduce the risk of pipe burst and explosion, do not allow gas refrigerant and refrigerant oil to be trapped in the refrigerant circuit.

To reduce the risk of burns or frost bites, do not touch the refrigerant pipes or refrigerant circuit components with bare hands during and immediately after operation.

To reduce the risk of burns, do not touch any electrical parts with bare hands during or immediately after stopping operation.

To reduce the risk of injury from falling tools, keep children away while installing, inspecting, or repairing the unit.

Keep the space well ventilated. Refrigerant can displace air and cause oxygen starvation. If leaked refrigerant comes in contact with a heat source, toxic gas may be generated.

Always replace a fuse with one with the correct current rating. The use of improperly rated fuses or a substitution of fuses with steel or copper wire may result in bursting, fire or explosion.

To reduce the risk of electric shock, smoke, and fire due to infiltration of dust and water, properly install all required covers.

To reduce the risk of electric shock, smoke, and fire due to infiltration of dust and water, properly install all required terminal block covers and insulation sheets.

To reduce the risk of electric shock, smoke, and fire due to infiltration of dust and water, properly install all required covers and panels on the terminal box and control box.

To reduce the risk of injury from units falling or falling over, periodically check the installation base for damage.

Consult an authorized agency for the proper disposal of the unit. Refrigerant oil and refrigerant that may be left in the unit pose a risk of fire, explosion, or environmental pollution.

To reduce the risk of fire or explosion, do not place flammable materials or use flammable sprays around the unit.

To reduce the risk of being caught in rotating parts, electric shock, and burns, do not operate the unit without all required panels and guards being installed.

To reduce the risk of injury, do not sit, stand, or place objects on the unit.

The unit described in this manual is not intended for use with food, animals, plants, precision instruments, or art work.

To reduce the risk of water leakage and malfunctions, do not turn off the power immediately after stopping operation. Leave the unit turned on for at least 5 minutes before turning off the power.

Do not install the unit over things that are vulnerable to water damage from condensation dripping.

To reduce the risk of injury, electric shock, and malfunctions, do not touch or allow cables to come in contact with the edges of components.

[2] Transportation and Installa tion

To reduce the risk of injury, do not touch the heat exchanger fins or sharp edges of components with bare hands.

Always wear protective gears when touching electrical components on the unit. Several minutes after the power is switched off, residual voltage may still cause electric shock.

To reduce the risk of electric shock and burns, always wear protective gear when working on units.

To reduce the risk of injury, do not insert fingers or foreign objects into air inlet/outlet grills. If the unit is left on a damaged base, it may fall and cause injury.

To reduce the risk of injury, always wear protective gear when working on units.

Do not release refrigerant into the atmosphere. Collect and reuse the refrigerant, or have it properly disposed of by an authorized agency. Refrigerant poses environmental hazards if released into the air.

Transportation and Installation

Lift the unit by placing the slings at designated locations. Support the outdoor unit securely at four points to keep it from slipping and sliding. If the unit is not properly supported, it may fall and cause personal injury.

To reduce the risk of injury, do not carry the product by the PP bands that are used on some packages.

[3] Installation

Installation

To reduce the risk of injury, products weighing 20 kg or more should be carried by two or more people.

Do not install the unit where there is a risk of leaking flammable gas. If flammable gas accumulates around the unit, it may ignite and cause a fire or explosion.

To reduce the risk of injury from coming in contact with units, install units where they are not accessible to people other than maintenance personnel.

To reduce the risk of injury, properly dispose of the packing materials so that children will not play with them.

Properly dispose of the packing materials. Plastic bags pose suffocation hazard to children.

All drainage work should be performed by the dealer or qualified personnel according to the instructions detailed in the Installation Manual. Improper drainage work may cause water leakage and resultant damage to the furnishings.

Consult your dealer and take appropriate measures to safeguard against refrigerant leakage and resultant oxygen starvation. An installation of a refrigerant gas detector is recommended.

Any additional parts must be installed by the dealer or qualified personnel. Only use the parts specified by Mitsubishi Electric. Installation by unauthorized personnel or use of unauthorized parts or accessories may result in water leakage, electric shock, or fire.

Take appropriate safety measures against wind gusts and earthquakes to prevent the unit from toppling over and causing injury.

To reduce the risk of injury from units falling or falling over, install the unit on a surface that is strong enough to support its weight.

To reduce the risk of injury from units falling or falling over, periodically check the installation base for damage.

Remove packing materials from the unit before operating the unit. Note that some accessories may be taped to the unit. Properly install all accessories that are required. Failing to remove the packing materials or failing to install required accessories may result in refrigerant leakage, oxygen deprivation, smoke, or fire.

Do not install the unit over things that are vulnerable to water damage. Provide an adequate collective drainage system for the drain water from unit as necessary.

Do not install the unit over things that are vulnerable to water damage. When the indoor humidity exceeds 80% or if the drain water outlet becomes clogged, condensation may drip from the indoor unit onto the ceiling or floor.

To reduce the risk of damage to the unit and resultant electric leak and electric shock, keep small animals, snow, and rain water from entering the unit by closing the gap in the pipe and wire access holes.

To reduce the risk of rain water or drain water from entering the room and damaging the interior, drainage work must be performed by your dealer or qualified personnel according to the instructions detailed in the Installation Manual.

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To reduce the risk of drain water overflow, install the unit horizontally, using a level.

[4] Piping Work

Piping Work

To reduce the risk of injury, including frost bites, that may result from being blasted with refrigerant, use caution when operating the refrigerant service valve. If refrigerant leaks out and comes in contact with an open flame, toxic gases may be generated.

To reduce the risk of refrigerant catching fire and causing burns, remove the refrigerant gas and the residual refrigerant oil in the pipes before heating them.

To reduce the risk of pipe damage, refrigerant leakage, and oxygen deprivation, use pipes that meet the pipe thickness specifications, which vary by the type of refrigerant used, pipe diameter, and pipe material.

To reduce the risk of pipe burst or explosion, evacuate the refrigerant circuit using a vacuum pump, and do not purge the system with refrigerant.

To reduce the risk of explosion and deterioration of refrigerant oil caused by chloride, do not use oxygen, flammable gas, or refrigerant that contains chloride as a pressurizing gas.

To prevent explosion, do not heat the unit with refrigerant gas in the refrigerant circuit.

To reduce the risk of refrigerant leakage and resultant oxygen deprivation, use the flare nut with holes that is supplied with the refrigerant service valve.

To reduce the risk of refrigerant leakage and resultant oxygen deprivation, use the flare nut that is supplied with the unit or its equivalent that meets applicable standards.

To reduce the risk of damage to the unit, and resultant refrigerant leakage and oxygen deprivation, tighten flare nuts to a specified torque.

To reduce the risk of oxygen deprivation and gas poisoning, check for gas leakage and keep fire sources away.

Insulate pipe connections after completing the air tightness test. Performing an air tightness test with the pipe being insulated may lead to failure to detect refrigerant leakage and cause oxygen deprivation.

To reduce the risk of pipe damage and resultant refrigerant leakage and oxygen deprivation, keep the field-installed pipes out of contact with the edges of components.

To reduce the risk of pipe bursting and explosion due to abnormal pressure rise, do not allow any substances other than R410A (such as air) to enter the refrigerant circuit.

[5] Wiring Work

Wiring Work

To reduce the risk of wire breakage, overheating, smoke, and fire, keep undue force from being applied to the wires.

To reduce the risk of water leakage and resultant damage to the furnishings, drain piping work must be performed by your dealer or qualified personnel according to the instructions detailed in the Installation Manual.

To keep the ceiling and floor from getting wet due to condensation, properly insulate the pipes.

To reduce the risk of wire breakage, overheating, smoke, or fire, properly secure the cables in place and provide adequate slack in the cables so as not to stress the terminals.

To reduce the risk of injury or electric shock, switch off the main power before performing electrical work.

All electric work must be performed by a qualified electrician according to the local regulations, standards, and the instructions detailed in the Installation Manual. Capacity shortage to the power supply circuit or improper installation may result in malfunction, electric shock, smoke, or fire.

To reduce the risk of electric shock, smoke, or fire, install an earth leakage breaker on the power supply to each unit.

To reduce the risk of electric shock, smoke, or fire, install an inverter circuit breaker on the power supply to each unit. (Applicable to inverter units only)

Use properly rated breakers and fuses (earth leakage breaker, local switch <switch + fuse>, no-fuse breaker). The use of a breaker with a breaking capacity greater than the specified capacity may cause electric shock, malfunctions, smoke, or fire.

Use properly rated breakers and fuses (inverter circuit breaker, local switch <switch + fuse>, no-fuse breaker). The use of a breaker with a breaking capacity greater than the specified capacity may cause electric shock, malfunctions, smoke, or fire. (Applicable to inverter units only)

To reduce the risk of current leakage, overheating, smoke, or fire, use properly rated cables with adequate current carrying capacity.

Proper grounding must be provided by a licensed electrician. Do not connect the grounding wire to a gas pipe, water pipe, lightning rod, or telephone wire. Improper grounding may result in electric shock, smoke, fire, or malfunction due to electrical noise interference.

To reduce the risk of current leakage, wire breakage, smoke, or fire, keep the wiring out of contact with the refrigerant pipes and other parts, especially sharp edges.

[6] Relocation and Repairs

Relocation and Repairs

To reduce the risk of refrigerant leakage, water leakage, injury, electric shock, and fire, units should only be moved or repaired by your dealer or qualified personnel.

To reduce the risk of wire shorting, electric shock, malfunctions, or fire, keep circuit boards dust free, and do not touch them with your hands or tools.

[7] Additional Precautions

To reduce the risk of wire shorting, electric leak, electric shock, smoke, or fire, do not perform maintenance work in the rain.

To reduce the risk of injury, electric shock, and fire, properly reinstall all removed components after completing repair work.

To reduce the risk of refrigerant and water leakage, check the pipe supports and insulation for damage during inspection or repair, and replace or repair the ones that are found to be deteriorated.

Additional Precautions

To avoid damage to the unit, use appropriate tools to install, inspect, or repair the unit.

To reduce the risk or malfunction, turn on the power at least 12 hours before starting operation, and leave the power turned on throughout the operating season.

To reduce the risk of the vacuum pump oil backflowing into the refrigerant cycle and causing the refrigerant oil to deteriorate, use a vacuum pump with a check valve.

Recover all refrigerant in the units, and dispose of it properly according to any applicable laws and regulations.

To reduce the risk of deterioration of refrigerant oil and compressor malfunctions caused by a refrigerant that contains chloride, such as R22, only use R410A.

Provide a maintenance access to allow for the inspection of pipes above the ceiling or the buried pipes.

Take appropriate measures against electrical noise interference when installing the air conditioners in hospitals or facilities with radio communication capabilities. Inverter, high-frequency medical, or wireless communication equipment as well as power generators may cause the air conditioning system to malfunction. Air conditioning system may also adversely affect the operation of these types of equipment by creating electrical noise.

To reduce the risk of damage to the unit, leave the valves on the unit closed until refrigerant charging is completed.

Have a set of tools for exclusive use with R410A. Consult your nearest Mitsubishi Electric Dealer.

Keep dust, dirt, and water off charging hose and flare tool. Infiltration of dust, dirt, or water into the refrigerant circuit may cause the refrigerant oil to deteriorate or damage the compressor.

Use refrigerant piping and couplings that meet the applicable standards. For refrigerant pipes, use pipes made of phosphorus deoxidized copper. Keep the inner and outer surfaces of pipes and couplings clean and free of such contaminants as sulfur, oxides, dust, dirt, shaving particles, oil, and moisture. Failure to follow these directions may result in the deterioration of refrigerant oil or compressor damage.

Store the piping materials indoors, and keep both ends of the pipes sealed until immediately before brazing. Keep elbows and other joints in plastic bags. Infiltration of dust, dirt, or water into the refrigerant circuit may cause the refrigerant oil to deteriorate or damage the compressor.

Place a wet towel on the refrigerant service valve before brazing the pipes to keep its temperature from rising above 120ºC and damaging the surrounding equipment.

Direct the blazing torch flame away from the adjacent cables and sheet metal to keep them from being overheated and damaged.

Prepare tools for exclusive use with R410A. Do not use the following tools if they have been used with the conventional refrigerant (R22): gauge manifold, charging hose, refrigerant leak detector, check valve, refrigerant charge spout, vacuum gauge, and refrigerant recovery equipment. R410A does not contain chloride, so leak detectors for use with older types of refrigerants will not detect an R410A leak. Infiltration of the residual refrigerant, refrigerant oil, or water on these tools may cause the refrigerant oil in the new system to deteriorate or damage the compressor.

Apply ester oil, ether oil, or a small amount of alkyl benzene to flares and flanges. The use and accidental infiltration of mineral oil into the system may cause the refrigerant oil to deteriorate or damage the compressor.

To reduce the risk of oxidized film from entering the refrigerant pipe and causing the refrigerant oil to deteriorate or damaging the compressor, braze pipes under nitrogen purge.

Do not use the existing refrigerant piping. A large amount of chloride that is contained in the residual refrigerant and refrigerant oil in the existing piping may cause the refrigerant oil in the new unit to deteriorate or damage the compressor.

Charge refrigerant in the liquid state. If refrigerant is charged in the gas phase, the composition of the refrigerant in the cylinder will change, compromising the unit's performance.

Do not use a charging cylinder. The use of a charging cylinder will change the composition of the refrigerant, compromising the unit's performance.

Charge the system with an appropriate amount of refrigerant in the liquid phase. Refer to the relevant sections in the manuals to calculate the appropriate amount of refrigerant to be charged. Refrigerant overcharge or undercharge may result in performance drop or abnormal stop of operation.

To reduce the risk of power capacity shortage, always use a dedicated power supply circuit.

To reduce the risk of both the breaker on the product side and the upstream breaker from tripping and causing problems, split the power supply system or provide protection coordination between the earth leakage breaker and no-fuse breaker.

Have a backup system, if failure of the unit has a potential for causing significant problems or damages.

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CONTENTS

Chapter 1 Check Before Servicing

1-1 Preparation for Piping Work..................................................................................................................3

1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ....................... 5

1-3 Working with Refrigerant Piping.........................................................................................................10

1-4 Precautions for Wiring......................................................................................................................... 15

Chapter 2 Restrictions

2-1 System Configurations ........................................................................................................................ 19

2-2 Types and Maximum Allowable Length of Cables............................................................................ 20

2-3 Switch Settings.....................................................................................................................................21

2-4 M-NET Address Settings .....................................................................................................................22

2-5 Demand Control Overview ..................................................................................................................29

2-6 System Connection Example ..............................................................................................................30

2-7 Example System with an MA Remote Controller .............................................................................. 32

2-8 Example System with an ME Remote Controller...............................................................................46

2-9 Example System with an MA and an ME Remote Controller............................................................48

2-10 Restrictions on Refrigerant Pipes ......................................................................................................51

Chapter 3 Major Components, Their Functions and Refrigerant Circuits

3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ................................. 65

3-2 Outdoor Unit Refrigerant Circuit Diagrams ....................................................................................... 67

3-3 Functions of the Major Components of Outdoor Unit ...................................................................... 69

3-4 Functions of the Major Components of Indoor Unit .........................................................................72

3-5 External Appearance and Refrigerant Circuit Components of BC Controller ................................ 73

3-6 BC Controller Refrigerant Circuit Diagrams ......................................................................................76

3-7 Functions of the Major Components of BC Controller ..................................................................... 79

Chapter 4 Electrical Components and Wiring Diagrams

4-1 Outdoor Unit Circuit Board Arrangement ..........................................................................................87

4-2 Outdoor Unit Circuit Board Components .......................................................................................... 90

4-3 Outdoor Unit Electrical Wiring Diagrams........................................................................................... 98

4-4 Transmission Booster Electrical Wiring Diagrams......................................................................... 100

4-5 BC Controller Circuit Board Arrangement....................................................................................... 101

4-6 BC Controller Circuit Board Components .......................................................................................102

4-7 BC Controller Electrical Wiring Diagrams ....................................................................................... 104

Chapter 5 Control

5-1 Dipswitch Functions and Factory Settings...................................................................................... 117

5-2 Outdoor Unit Control ......................................................................................................................... 124

5-3 BC Controller Control ........................................................................................................................139

5-4 Operation Flowcharts ........................................................................................................................ 140

Chapter 6 Test Run

6-1 Read before Test Run ........................................................................................................................149

6-2 MA and ME Remote Controller Functions and Specifications....................................................... 150

6-3 Making the Group and Interlock Settings from an ME Remote Controller ...................................151

6-4 Selecting Remote Controller Functions from an ME Remote Controller...................................... 155

6-5 Making Interlock Settings from an MA Remote Controller............................................................. 157

6-6 Changing the Room Temperature Detection Position.................................................................... 159

6-7 Test Run Method ................................................................................................................................ 160

6-8 Operation Characteristics and Refrigerant Charge ........................................................................161

6-9 Evaluating and Adjusting Refrigerant Charge................................................................................. 161

6-10 The Following Symptoms Are Normal ............................................................................................. 166

6-11 Standard Operation Data (Reference Data) .....................................................................................167

Chapter 7 Troubleshooting Using Error Codes

7-1 Error Code and Preliminary Error Code Lists .................................................................................175

7-2 Error Code Definitions and Solutions: Codes [0 - 999]...................................................................179

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7-3 Error Code Definitions and Solutions: Codes [1000 - 1999]........................................................... 180

7-4 Error Code Definitions and Solutions: Codes [2000 - 2999]........................................................... 184

7-5 Error Code Definitions and Solutions: Codes [3000 - 3999]........................................................... 191

7-6 Error Code Definitions and Solutions: Codes [4000 - 4999]........................................................... 192

7-7 Error Code Definitions and Solutions: Codes [5000 - 5999]........................................................... 210

7-8 Error Code Definitions and Solutions: Codes [6000 - 6999]........................................................... 223

7-9 Error Code Definitions and Solutions: Codes [7000 - 7999]........................................................... 239

Chapter 8 Troubleshooting Based on Observed Symptoms

8-1 MA Remote Controller Problems......................................................................................................251

8-2 ME remote Controller Problems .......................................................................................................255

8-3 Refrigerant Control Problems ...........................................................................................................259

8-4 Checking Transmission Waveform and for Electrical Noise Interference .................................... 264

8-5 Pressure Sensor Circuit Configuration and Troubleshooting Pressure Sensor Problems ........ 267

8-6 Troubleshooting Solenoid Valve Problems .....................................................................................269

8-7 Troubleshooting Outdoor Unit Fan Problems ................................................................................. 272

8-8 Troubleshooting LEV Problems........................................................................................................273

8-9 Troubleshooting Problems with Major Components on BC Controller ........................................ 277

8-10 Troubleshooting Inverter Problems (TKMU).................................................................................... 288

8-11 Troubleshooting Inverter Problems (YKMU) ...................................................................................298

8-12 Control Circuit (TKMU) ...................................................................................................................... 307

8-13 Control Circuit (YKMU) ......................................................................................................................309

8-14 Measures for Refrigerant Leakage ................................................................................................... 311

8-15 Compressor Replacement Instructions ........................................................................................... 313

8-16 Solenoid Valve Block and Check Valve Replacement Instructions .............................................. 315

8-17 BC Controller Maintenance Instructions..........................................................................................319

8-18 Troubleshooting Problems Using the LED Status Indicators on the Outdoor Unit..................... 322

Chapter 9 LED Status Indicators on the Outdoor Unit Circuit Board

9-1 LED Status Indicators ........................................................................................................................ 325

9-2 LED Status Indicators Table .............................................................................................................328

HWE13080 GB

Chapter 1 Check Before Servicing

1-1 Preparation for Piping Work ................................................................................................................ 3

1-1-1 Read before Servicing ............................................................................................................................ 3

1-1-2 Tool Preparation ..................................................................................................................................... 4

1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil...................... 5

1-2-1 Piping Materials ...................................................................................................................................... 5

1-2-2 Storage of Piping Materials..................................................................................................................... 7

1-2-3 Pipe Processing ...................................................................................................................................... 7

1-2-4 Characteristics of the New and Conventional Refrigerants .................................................................... 8

1-2-5 Refrigerant Oil......................................................................................................................................... 9

1-3 Working with Refrigerant Piping ....................................................................................................... 10

1-3-1 Pipe Brazing.......................................................................................................................................... 10

1-3-2 Air Tightness Test ................................................................................................................................. 11

1-3-3 Vacuum Drying ..................................................................................................................................... 12

1-3-4 Refrigerant Charging............................................................................................................................. 14

1-4 Precautions for Wiring ....................................................................................................................... 15

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[1-1 Preparation for Piping Work ]

CAUTION

1 Check Before Servicing

1-1 Preparation for Piping Work

1-1-1 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 H2i (Hyper Heating Inverter) R2 TKMU-A-H, 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.

For information about the correct use of tools, refer to the following page(s). [1-1-2 Tool Preparation](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.

1 Check Before Servicing

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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[1-1 Preparation for Piping Work ]

1-1-2 Tool Preparation

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

high-pressure side

conventional model.

cylinder is pink.

than that of the current port.

Tools/Materials Use Notes

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

may be used.

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

is attached.

Flare Tool Flare processing Flare processing dimensions for the

piping in the system using the new refrigerant differ from those of R22. Refer to the following page(s). [1-2-1 Piping Materials](page 5)

Refrigerant Recovery Equipment Refrigerant recovery May be used if compatible with

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 ø12.7 (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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[1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ]

1-2 Handling and Characteristics of Piping Materials,

Refrigerant, and Refrigerant Oil

1-2-1 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)

at the same radial thickness.

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.

1 Check Before Servicing

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.)

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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[1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ]

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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[1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ]

1-2-2 Storage of Piping Materials

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

1 Check Before Servicing

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.

1-2-3 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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[1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ]

1-2-4 Characteristics of the New and Conventional 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

/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

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. 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

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[1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ]

1-2-5 Refrigerant 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

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 Check Before Servicing

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

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[1-3 Working with Refrigerant Piping ]

1-3 Working with Refrigerant Piping

1-3-1 Pipe 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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[1-3 Working with Refrigerant Piping ]

1-3-2 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 Check Before Servicing

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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[1-3 Working with Refrigerant Piping ]

1-3-3 Vacuum Drying

(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

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.)

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[1-3 Working with Refrigerant Piping ]

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).

1 Check Before Servicing

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[1-3 Working with Refrigerant Piping ]

1-3-4 Refrigerant Charging

Cylinder with a siphon

Cylinder without a siphon

Cylin-

der

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

Valve Valve

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.

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 the following page(s).[8-14 Measures for Refrigerant Leakage](page 311)

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[1-4 Precautions for Wiring ]

1-4 Precautions for Wiring

Control boxes house high-voltage and high-temperature electrical parts. They may still remain energized or hot after the power is turned off. When opening or closing the front cover of the control box, keep out of contact with the internal parts.

Before inspecting the inside of the control box, turn off the power, leave the unit turned off for at least 10 minutes, and check that the voltage of the electrolytic capacitor (inverter main circuit) has dropped to 20 VDC or less.

It will take approximately 10 minutes until the voltage is discharged after power off.

Disconnect the outdoor unit fan board connector (CNINV) before performing maintenance work.

Before connecting or disconnecting the connector, check that the outdoor unit fan is stopped and that the voltage of the main circuit capacitor has dropped to 20 VDC or below.

If the outdoor unit fan is rotated by external forces such as strong winds, the main circuit capacitor can be charged and cause an electric shock.

Refer to the wiring nameplate for details. Reconnect the connector (CNINV) to the fan board after completion of maintenance work.

When the unit is turned on, the compressor will remain energized even when it is stopped to vaporize the liquid refrigerant

that accumulates in the compressor.

Before connecting wiring to TB7, check that the voltage has dropped below 20 VDC. When a system controller is connected to the centralized control transmission cable to which power is supplied from the out-

door unit (power jumper on the outdoor unit is connected to CN40), be aware that power can be supplied to the centralized control transmission and the system controller may detect an error and send an error notice if the outdoor unit fan is rotated by external forces, such as strong winds, even when power to the outdoor unit is turned off.

When replacing the internal electrical components of the control box, tighten the screws to the recommended tightening

torque as specified below. Recommended tightening torque for the internal electrical components of the control box

1 Check Before Servicing

Screw Recommended tightening torque (N·m)

M3 0.69

M4 1.47

M5 2.55

M6 2.75

M8 6.20

∗1 When replacing semiconductor modules (e.g., diode stack, IPM, INV board (with IPM), fan board (with IPM)), apply heat-

sink silicone evenly to the mounting surface of the semiconductor module (or the semiconductor module on the back of the circuit board). Next, tighten the screws holding the semiconductor module to one-third of the specified torque, and then tighten the screws to the specified torque.

∗2 Deviating from the recommended tightening torque may cause damage to the unit or its parts.

Take the following steps to ensure that the screws are properly tightened.

1) Ensure that the spring washers are parallel to the terminal block.

Even if the tightening torque is observed, if the washers are not parallel to the terminal block, then the semiconductor module is not installed properly.

Loose screws

Proper installation

Spring washers are parallel to the terminal block

HWE13080 GB

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[1-4 Precautions for Wiring ]

2) Check the wires are securely fastened to the screw terminals.

Screw the screws straight down so as not to damage the screw threads.

Hold the two round terminals back to back to ensure that the screw will screw down straight.

After tightening the screw, mark a line through the screw head, washer, and terminals with a permanent marker.

Example

Mark a line.

Daisy-chain

Power wires, transmission lines, centralized transmission lines

Place the round terminals back to back.

Power supply terminal block, indoor-outdoor transmission line terminal block, and centralized controller transmission line

Poor contact caused by loose screws may result in overheating and fire. Continued use of the damaged circuit board may cause overheating and fire.

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Chapter 2 Restrictions

2-1 System Configurations....................................................................................................................... 19

2-2 Types and Maximum Allowable Length of Cables........................................................................... 20

2-3 Switch Settings ................................................................................................................................... 21

2-4 M-NET Address Settings .................................................................................................................... 22

2-4-1 Address Settings List ............................................................................................................................ 22

2-4-2 Outdoor Unit Power Jumper Connector Connection.............................................................................24

2-4-3 Outdoor Unit Centralized Controller Switch Setting .............................................................................. 24

2-4-4 Room Temperature Detection Position Selection ................................................................................. 24

2-4-5 Start/Stop Control of Indoor Units ......................................................................................................... 25

2-4-6 Miscellaneous Settings ......................................................................................................................... 25

2-4-7 Various Control Methods Using the Signal Input/Output Connector on Outdoor Unit .......................... 26

2-5 Demand Control Overview ................................................................................................................. 29

2-6 System Connection Example............................................................................................................. 30

2-7 Example System with an MA Remote Controller ............................................................................. 32

2-7-1 Single Refrigerant System (Automatic Indoor/Outdoor Address Startup)............................................. 32

2-7-2 Single Refrigerant System with Two or More LOSSNAY Units ............................................................ 34

2-7-3 Grouped Operation of Units in Separate Refrigerant Circuits ............................................................... 36

2-7-4 System with a Connection of System Controller to Centralized Control Transmission Line................. 38

2-7-5 System with a Connection of System Controller to Indoor-Outdoor Transmission Line ....................... 40

2-7-6 System with Multiple BC Controllers..................................................................................................... 42

2-8 Example System with an ME Remote Controller ............................................................................. 46

2-8-1 System with a Connection of System Controller to Centralized Control Transmission Line................. 46

2-9 Example System with an MA and an ME Remote Controller .......................................................... 48

2-9-1 System with a Connection of System Controller to Centralized Control Transmission Line................. 48

2-10 Restrictions on Refrigerant Pipes ..................................................................................................... 51

2-10-1 Restrictions on Refrigerant Pipe Length ............................................................................................... 51

2-10-2 Restrictions on Refrigerant Pipe Size ................................................................................................... 57

2-10-3 BC Controller Connection Method ........................................................................................................ 58

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HWE13080 GB

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[2-1 System Configurations ]

2 Restrictions

2-1 System Configurations

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

144 72 72 72 - 216 36

192 96 96 96 - 288 48

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.

2 Restrictions

HWE13080 GB

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[2-2 Types and Maximum Allowable Length of Cables ]

2-2 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

BC Controller

Indoor unit

Remote Controller

Outdoor unit

TB3TB7TB3TB

BC Controller

multiple-core cable

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. Before performing wiring work, refer to the following page(s). [2-7 Example System with an MA Remote Controller](page 32) [2-8 Example System with an ME Remote Controller](page 46) [2-9 Example System with an MA and an ME Remote Controller](page 48)

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)

HWE13080 GB

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All facility types

2-core cable

[AWG16]

200 m [656ft] max.

[2-3 Switch Settings ]

2) Remote controller wiring

Type CVV CVV

Number of cores

Cable type

Cable size

2-core cable 2-core cable

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

Maximum overall line length

200 m [656ft] max.

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

2-3 Switch Settings

MA remote controller

2 *2 *4

2 ) *3

(AWG18) is recommended for easy handling.

sheathed cable.

0.3 to 1.25mm [AWG22 to 16] (0.75 to 1.25mm

ME remote controller

2 *2

2 ) *3

[AWG18 to 16]

The section of the cable that exceeds 10m [32ft] must be included in the maximum indoor-outdoor transmission line distance.

2 Restrictions

1. Switch setting

The necessary switch settings depend on system configuration. Before performing wiring work, refer to the following page(s). [2-7 Example System with an MA Remote Controller](page 32) [2-8 Example System with an ME Remote Controller](page 46) [2-9 Example System with an MA and an ME Remote Controller](page 48) 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

ME remote controller Main/sub remote

LC Outdoor units

RC Outdoor units

and Indoor units

and LOSSNAY

controller

MA remote controller

Main/sub remote

MA Indoor units

controller

CITY MULTI outdoor unit

OC,OS Outdoor units

BC controller Main BC Outdoor units

Sub1, 2 BS1, BS2 Outdoor units

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 the following page(s).

[5-1-1 Outdoor Unit Switch Functions and Factory Settings](page 117)

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[2-4 M-NET Address Settings ]

2-4 M-NET Address Settings

2-4-1 Address Settings List

1. 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

Main/sub unit IC 0, 01 to

*1 *4 *6

M-NET adapter

M-NET control interface

Free Plan adapter

LOSSNAY, OA processing unit LC 0, 01 to

ME remote controller

Main remote controller

Sub remote

RC 101 to

RC 151 to

controller

150

200

*1 *4 *6

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

2 remote controllers are connected to the system.)

CITY MULTI outdoor unit OCOS0, 51 to

100

Auxiliary outdoor unit

BC controller (main)

BC 0, 51 to

100

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.

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

*1 *2

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.

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

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

101

Main

*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.

HWE13080 GB

- 22 -

[2-4 M-NET Address Settings ]

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

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.

address

setting

201

202

000

247

2 Restrictions

HWE13080 GB

- 23 -

[2-4 M-NET Address Settings ]

2-4-2 Outdoor Unit Power Jumper Connector Connection

There are limitations on the total number of units that are connectable to each refrigerant system. Refer to the DATABOOK 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

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)

*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.

2-4-3 Outdoor Unit Centralized Controller Switch Setting

System configuration Centralized control switch (SW5-1) settings *

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

Connection to the system controller Connected *

*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).

2-4-4 Room Temperature Detection Position Selection

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. (Factory setting: SW1-1 set to "OFF".)

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.

HWE13080 GB

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[2-4 M-NET Address Settings ]

2-4-5 Start/Stop Control of Indoor Units

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

*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.

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 power off (power failure).

Setting (SW1)

910

OFF ON

ON OFF

OFF OFF

2-4-6 Miscellaneous Settings

*4 *5

2 Restrictions

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.

HWE13080 GB

- 25 -

[2-4 M-NET Address Settings ]

2-4-7 Various Control Methods Using the Signal Input/Output Connector on Outdoor

Unit

(1) Various connection options

Terminal

Type Usage Function

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

DEMAND (level) CN3D*2Adapter for

input to the outdoor unit.

*It can be used as the DEMAND control device for each system.

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

Low-noise mode

*3*4

(level) * 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*7

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

Snow sensor signal

input (level)

Auto-changeover CN3N the outdoor unit.

The operation mode of the unit can be changed from normal cooling operation (performance priority) to energy-saving cooling mode

Energy-saving

mode by an external signal input.

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

*6 *8

to be

used

CN3S

CN3K

CN51 Adapter for

Option

external input (PACSC36NA-E)

external output (PACSC37SA-E)

*1 For details, refer to section (2) Example of wiring connection. *2 For details, refer to section (2) Example of wiring connection and other relevant sections in the manual. [2-5 Demand Control

Overview](page 29)

*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 priority

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

TH7>3°C[37°F] and 63LS>4.6kg/cm

TH7>35°C[95°F] or 63HS1>35kg/cm

TH7<0°C[32°F] or 63LS<3.9kg/cm

*5 If multiple outdoor units are connected to the same refrigerant circuit, signal input/output settings need to be made for each

outdoor unit. *6 Take out signals from the outdoor unit that is designated as OC if multiple outdoor units in the same system. *7 If the formula TH7>5 holds true, the fan will not go into operation when the contact receives signal input. *8 On the TKMU-A-H models, the error signal output function is disabled at default settings. Change the DipSW4 (No. 974) setting

to use the error signal output function. When the setting is changed, base heaters cannot be used.

HWE13080 GB

- 26 -

[2-4 M-NET Address Settings ]

CAUTION

(2) Example of wiring connection

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.

(1) CN51

HP-TKMU-A-H model

External input adapter

Distant control board

ecruos rewop pmaL

Relay circuit

External input adapter

5 4 3

Outdoor unit control board

CN51

Distant control board

cruo s

rewop pmaL

Relay circuit

4 3

Outdoor unit control board

CN51

Preparations

in the field

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.

(2) CN3S

Relay circuit

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.

(4) CN3D

Relay circuit

External input adapter

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

in stop mode or thermostat mode.

1 2

Maximum cable length is 10m

External input adapter

Maximum cable length is 10m

Outdoor unit

control board

CN3S

1 2

Outdoor unit control board

CN3D

L2 : Compressor operation lamp (compressor running state) Y : Relay (coil =<0.9W : DC12V)

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

3. On the TKMU-A-H models, the error signal output function is disabled at default settings. Change the DipSW4 (No. 974) setting to use the error signal output function. When the setting is changed, base heaters cannot be used.

(3) CN3N

External input adapter

Maximum cable length is 10m

Relay circuit

Preparations

in the field

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

Preparations

in the field

Outdoor unit control board

CN3N

1 2

Maximum cable length is 10m

OFF

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

X,Y : Relay Contact rating voltage >= DC15V Contact rating current >= 0.1A Minimum applicable load =< 1mA at DC

External input adapter

1 2

Outdoor unit

control board

CN3D

CoolingONHeating

2 Restrictions

OFF

Normal

Preparations

in the field

Maximum cable

X : Low-noise mode Y : Compressor ON/OFF X,Y : Relay

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

HWE13080 GB

length is 10m

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

Preparations

in the field

X : Low-noise mode

X : Relay

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

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

Maximum cable length is 10m

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

fan frequency and maximum compressor frequency.

- 27 -

[2-4 M-NET Address Settings ]

(5) CN3K

Relay circuit

Preparations

in the field

X : Energy-saving mode command X : Relay

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

External input adapter

Maximum cable length is 10m

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

1 2

Outdoor unit

control board

CN3K

HWE13080 GB

- 28 -

[2-5 Demand Control Overview ]

2-5 Demand Control Overview

(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*

OC OS

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

ON OFF OC

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

3 OFF ON OS

8 steps

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

*1 Available demand functions

HP72 - HP96T(Y)KMU-A(-H) models (single-outdoor-unit system) : 2 and 4 steps shown in the rows 1 and 2 in the table above only. HP144 - HP192T(Y)KMU-A(-H) 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

1) 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.

2 Restrictions

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.

HWE13080 GB

- 29 -

[2-6 System Connection Example ]

2-6 System Connection Example

Examples of typical system connection are shown below.

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-

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

door unit

System with one out-

door unit

Grouping of units in a

system with multiple

outdoor units

System with one out-

door unit

System with one out-

door unit

System with one out-

door unit

System

configuration

System with one out-

door unit

Connection to the system controller

With connection to transmission line

for centralized control

With connection to indoor-outdoor

transmission line

With connection to transmission line

for centralized control

Connection to the system controller

With connection to transmission line

for centralized control

Address start up for in-

door and outdoor units

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

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-

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

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

HWE13080 GB

- 30 -

[2-6 System Connection Example ]

2 Restrictions

HWE13080 GB

- 31 -

[2-7 Example System with an MA Remote Controller ]

2-7 Example System with an MA Remote Controller

2-7-1 Single Refrigerant System (Automatic Indoor/Outdoor Address Startup)

(1) Sample control wiring

Interlock operation with the ventilation unit

TB5

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

TB3

M1 M2 M1 M2 M1 M2

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

TB7

TB3

M1 M2

TB7

L3L1 L2

TB02

M1 M2

TB5

L4 L5

GroupGroup

TB5STB

M1M2

TB02

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

L11

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 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.

A1 B2

TB5

A1 B2

L12 L13

A1 B2

GroupGroup

TB5STB

A1 B2

0000

A1 B2

TB5STB

4) Automatic address setup is not available if start-stop input (CN32, CN51, CN41) is used for a group operation of indoor units or when multiple indoor units with different functions are grouped in the same group. Refer to the following page(s). [2-7-2 Single Refrigerant System with Two or More LOSSNAY Units](page 34)

5) For information about connecting two or more LOSSNAY units to a system, refer to the following page(s). [2-7-2 Single Refrigerant System with Two or More LOSSNAY Units](page 34)

(3) Maximum allowable length

1) Indoor/outdoor transmission line 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

[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

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

- 32 -

GBHWE13080

[2-7 Example System with an MA Remote Controller ]

(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

(5) Address setting method

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.)

For information about certain types of systems (1. Sys-

tems in which the LOSSNAY unit is interlocked with only part of the indoor units, 2. Systems in which the LOSSNAY unit is operated independently from the indoor units, 3. Systems in which more than 16 indoor units are interlocked with the LOSSNAY unit, and 4. Systems to which two ore more LOSSNAY units are connected), refer to the following page(s). [2-7-2 Single Refrigerant System with Two or More LOSSNAY Units](page 34)

5) Switch setting Address setting is required as follows.

2 Restrictions

Proce-

dures

Unit or controller

1 Indoor unit Main unit IC No settings

Sub unit IC

Address set-

ting range

required.

Setting method Notes

- Port number setting is required

For information about how to perform a group operation of indoor

Factory

setting

units that feature different functions, refer to the following page(s). [2-7-2 Single Refrigerant System with Two or More LOSSNAY Units](page 34)

2 LOSSNAY LC No settings

-00

required.

3MA

remote controller

Main remote controller

Sub remote controller

MA No settings

required.

MA Sub

remote controller

- It is not possible to connect a pair

of PAR-30MAAU.

Settings to be made with the Sub/Main

Main

switch

4 Outdoor unit OCOSNo settings

-00

required.

5 Auxiliary

outdoor unit

BC controller

BC No settings

required.

-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).

HWE13080 GB

33- 33 -

[2-7 Example System with an MA Remote Controller ]

2-7-2 Single Refrigerant System with Two or More LOSSNAY Units

(1) Sample control wiring

Interlock operation with the ventilation unit

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

TB3

M1 M2

L1 L2

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

TB7

M1 M2

TB3

M1 M2

TB7

M1 M2

TB02

M1 M2

TB5STB

M1M2 M1M2 M1M2

L4 L5

GroupGroup

TB5STB

TB5

M1 M2

TB02

* 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.

(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.

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

L11

Group

A1 B2

L12 L13

A1 B2

0403

TB5

A1 B2

TB5STB

0807

TB5

A1 B2

TB5STB

M1M2M1M2

A1 B2

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 2-7-1

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

3) MA remote controller wiring Same as 2-7-1

TB5

M1M2M1M2M1M2

- 34 -

GBHWE13080

[2-7 Example System with an MA Remote Controller ]

(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.

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.

2) Transmission line for centralized control

(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

No connection is required.

3) MA remote controller wiring Same as 2-7-1

When 2 remote controllers are connected to the system

Same as 2-7-1

Group operation of indoor units

Same as 2-7-1

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. For information about how to interlock the operation of indoor and LOSSNAY units, refer to the following page(s) in this Service Handbook.

[6-5 Making Interlock Settings from an MA Remote Controller](page 157)

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 outdoor

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.

2 Restrictions

Fac-

tory setting

Main

HWE13080 GB

35- 35 -

[2-7 Example System with an MA Remote Controller ]

2-7-3 Grouped Operation of Units in Separate Refrigerant Circuits

(1) Sample control wiring

Interlock operation with

the ventilation unit

GroupGroup

TB5STB

M1 M2

A1 B2

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

TB3

M1 M2

TB7

M1 M2

L11

Move the male connector from CN41 to CN40.

SW5-1 OFF

To be left unconnected

TB3

M1 M2

TB7

M1 M2

To be connected

TB02

M1 M2

L12

Group

TB5STB

M1 M2 M1M2

A1 B2

TB5STB

A1 B2

TB5

M1 M2

L31

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

TB3

M1 M2

TB7

M1 M2

L21

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

To be left unconnected

TB3

TB7

M1 M2

To be left unconnected

TB02

M1 M2M1 M2

TB5

M1 M2

(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

L22

Group

0402

TB5STB

M1 M2

12 12

A1 B2

TB5 TB15

M1 M2

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.

(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 2-7-1

4) Maximum line distance via outdoor unit (1.25mm

[AWG16] or larger)

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

[AWG16] or larger)

- 36 -

GBHWE13080

[2-7 Example System with an MA Remote Controller ]

(4) Wiring method

1) Indoor/outdoor transmission line

Same as 2-7-2

Shielded cable connection

Same as 2-7-2

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

(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

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 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 2-7-1

When 2 remote controllers are connected to the system

Same as 2-7-1

Group operation of indoor units

Same as 2-7-1

4) LOSSNAY connection

Same as 2-7-2

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 outdoor

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.

2 Restrictions

Fac-

tory setting

Main

HWE13080 GB

37- 37 -

[2-7 Example System with an MA Remote Controller ]

2-7-4 System with a Connection of System Controller to Centralized Control

Transmission Line

(1) Sample control wiring

An example of a system in which a system controller is connected to the transmission cable for the centralized control system and the power is supplied from the outdoor unit

Interlock operation with

the ventilation unit

TB5STB

M1M2

TB5

L11

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

TB3

M1M2 M1M2

Move the male connector from CN41 to CN40.

SW5-1 OFF

TB3

TB02

M1M2

L12

Group

TB5STB

M1M2

Group Group

TB5STB

M1M2 M1M2

To be left unconnected

L21

To be left unconnected

TB7

M1M2

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

TB3

M1M2M1M2

TB7

To be connected

To be left

unconnected

L32

System controller

ABS

Note1

TB02

M1M2

TB7

M1M2

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

L31

TB3

TB7

M1M2 M1M2

(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

M1M2

A1B

L22

TB5

A1B

TB5STB

m2 m1

A1B

0504

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.

Group

TB5STB

A1B

TB5

M1M2M1M2M1M2

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 2-7-3

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

3) MA remote controller wiring Same as 2-7-1

4) Maximum line distance via outdoor unit (1.25mm

[AWG16] or larger)

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

- 38 -

GBHWE13080

[2-7 Example System with an MA Remote Controller ]

(4) Wiring method

1) Indoor/outdoor transmission line

Same as 2-7-2 Only use shielded cables.

Shielded cable connection

Same as 2-7-2

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

(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 2-7-1

When 2 remote controllers are connected to the system

Same as 2-7-1

Group operation of indoor units

Same as 2-7-1

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.

2 Restrictions

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

4 Outdoor unit (Note) OC

5 Auxiliary

outdoor

BCcontroller (Sub)

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

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.

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

Main

HWE13080 GB

39- 39 -

[2-7 Example System with an MA Remote Controller ]

TB5STB

A1B

TB5

TB5STB

0504

TB5

TB5STB

A1B

TB5STB

A1B

GroupGroupGroup

Group Group

Interlock operation with the ventilation unit

Connect

m2 m1

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

TB3

TB7

TB3

TB7

TB3

TB7

TB3

TB7

L31

ABS

L25

M2M1 M2M1

M2M1

M2M1 M2M1

M2M1

M2M1M2M1

M2M1

Not Connect

CN41 CN40 Replace SW5-1 OFF ON

SW5-1 OFF ON

Leave the male connector on CN41 as it is.

SW5-1 OFF ON

Leave the male connector on CN41 as it is.

SW5-1 OFF ON

Leave the male connector on CN41 as it is.

System controller

Note1

TB02

L22

L21

L12

L11

2-7-5 System with a Connection of System Controller to Indoor-Outdoor

Transmission Line

(1) Sample control wiring

(2) Cautions

1) ME remote controller and MA remote controller cannot both be con-

2) No more than 2 MA remote controllers can be connected to a group

3) Do not connect the terminal blocks (TB5) on the indoor units that are

nected to the same group of indoor units.

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

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.)

- 40 -

Number of transmission boost-

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

Refer to the DATABOOK for further information about how many

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.

booster units are required for a given system.

er (sold separately) required

1 unit 2 units

27 - 50 units -

21 - 39 units 40 - 50 units

(3) Maximum allowable length

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

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

2) Transmission line for centralized control

3) MA remote controller wiring

L25 200m [656ft]

L31+L21 200m [656ft]

Same as 2-7-1

4) Maximum line distance via outdoor unit (1.25mm

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

[AWG16] or larger)

GBHWE13080

[2-7 Example System with an MA Remote Controller ]

(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 2-7-1

When 2 remote controllers are connected to the system

Same as 2-7-1

Group operation of indoor units

Same as 2-7-1

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.

2 Restrictions

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

4 Outdoor unit OC

5 Auxiliary

outdoor

BCcontroller (Sub)

unit

BC controller (Main)

BC OC (or OS if it exists) +1

Address

setting

range

Assign the smallest address to the main unit

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

Main

HWE13080 GB

41- 41 -

[2-7 Example System with an MA Remote Controller ]

2-7-6 System with Multiple BC Controllers

(1) Sample control wiring

L31

L11

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

M1M2

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

M1M2

M1M2 M1M2

OS1

TB3

TB7

OS1

TB3

TB7

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

To be left unconnected

L21

To be left unconnected

L32

TB3

M1M2 M1M2

TB7

M1M2

To be connected

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

TB3

M1M2

TB7

L12

Group

53 57

TB02

1 1 2 1 222 12

TB5STB

M1M2

M1M2 M1M2 M1M2 M1M2 M1M2 M1M2 M1M2 M1M2 M1M2

A1 B2

Group Group Group

TB5STB

A1 B2

L22

TB02

TB5STB

Group Group Group

56 59

TB02

M1M2

To be left unconnected

System controller

ABS

1 1 2 1 1

TB5

M1M2 M1M2

A1 B2

Note1

*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.

0503

TB5STB

A1 B2

TB5STB

M1M2

323 1

M1M2

TB02

TB5STB

M1M2

A1 B2

Numbers in the square indicate port numbers.

Connection to BC controllers

Interlock operation with the ventilation unit

TB5STB

M1M2

TB5

TB02

TB5

TB5STB

A1 B2

1 2

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.

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 connec-

tor on CN41 as it is (factory setting).

(3) Maximum allowable length

1) Indoor/outdoor transmission line 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

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

4) Maximum line distance via outdoor unit (1.25mm

[AWG16] or larger)

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

- 42 -

GBHWE13080

[2-7 Example System with an MA Remote Controller ]

(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

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

3) MA remote controller wiring Same as 2-7-1

When 2 remote controllers are connected to the system

Same as 2-7-1

Group operation of indoor units

Same as 2-7-1

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.

2 Restrictions

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

HWE13080 GB

43- 43 -

[2-7 Example System with an MA Remote Controller ]

(5) Address setting method

Pro-

cedur

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-

tings required.

Sub re-

mote controller

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

5 Auxilia-

ry outdoor unit

BC controller (Sub)

BC controller (Main)

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

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

Main

- 44 -

GBHWE13080

[2-7 Example System with an MA Remote Controller ]

2 Restrictions

HWE13080 GB

45- 45 -

[2-8 Example System with an ME Remote Controller ]

2-8 Example System with an ME Remote Controller

2-8-1 System with a Connection of System Controller to Centralized Control

Transmission Line

(1) Sample control wiring

L31

Leave the male connector on CN41 as it is.

SW5-1 OFF ON

Leave the male connector on CN41 as it is.

SW5-1 OFF ON

L11

TB3

M1M2 M1M2

TB7

M1M2

To be left unconnected

L21

TB3

M1M2 M1 M2

TB7

M1M2 M1 M2

To be left unconnected

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

TB3

TB7

M1 M2

Leave the male connector on CN41 as it is.

SW5-1 OFF ON

TB3

TB7

System controller

ABS

To be connected

To be left unconnected

L32

Note1

L12

Group

TB02

M1M2

TB02

M1M2

*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.

Group

TB5STB

M1M2

A1 B2

101

A1 B2

154

Group Group

L22

TB5

M1M2 M1M2 M1M2 M1M2

A1 B2

104

TB5STB

M1M2

A1 B2

102

TB5STB

Interlock operation with the ventilation unit

A1 B2

Group

0504

TB5STB

A1 B2

106

TB5STB

103

TB5

M1M2M1M2

TB5

(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.

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 P72 and P96 models are included in the connected indoor units

15 - 34 units

11 - 26 units

35 - 50

units

27 - 42 units

43 - 50 units

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.

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 2-7-3

2) Transmission line for centralized control Same as 2-7-4

3) ME remote controller wiring Maximum overall line length

(0.3 to 1.25mm

[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

[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

[AWG16] or large)

[AWG18-16].

Same as 2-7-4

- 46 -

GBHWE13080

[2-8 Example System with an ME Remote Controller ]

(4) Wiring method

1) Indoor/outdoor transmission line Same as 2-7-2

Shielded cable connection

Same as 2-7-2

2) Transmission line for centralized control Same as 2-7-4

Shielded cable connection

Same as 2-7-4

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

Sub unit

2 LOSSNAY LC 01 to

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

5 Auxiliary

outdoor

BCcontroller (Sub)

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

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 2-7-4

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

101

2 Restrictions

HWE13080 GB

47- 47 -

[2-9 Example System with an MA and an ME Remote Controller ]

2-9 Example System with an MA and an ME Remote Controller

2-9-1 System with a Connection of System Controller to Centralized Control

Transmission Line

(1) Sample control wiring

L12

Group Group

TB5STB

M1M2 M1M2 M1M2

TB5STB

Leave the male connector on CN41 as it is.

SW5-1 OFF ON

TB3

M1M2

L11

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

TB3

M1M2

TB02

M1M2

TB7

M1M2

Leave the male connector on CN41 as it is.

L31

SW5-1 OFF ON

TB3

TB7

To be left unconnected

L21

To be left unconnected

TB7

M1M2

Leave the male connector on CN41 as it is.

SW5-1 OFF ON

TB3

TB7

M1 M2M1 M2

To be connected

To be left unconnected

L32

Note1

System controller

ABS

M1 M2M1 M2M1 M2

TB02

(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 ground 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

A1 B2

106

L22

GroupGroup

0403

TB5

A1 B2

*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

TB5STB

M1M2M1M2M1M2

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

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).

35 - 50

units

27 - 42 units

43 - 50 units

- 48 -

GBHWE13080

[2-9 Example System with an MA and an ME Remote Controller ]

(3) Maximum allowable length

1) Indoor/outdoor transmission line Same as 2-7-3

2) Transmission line for centralized control Same as 2-7-4

3) MA remote controller wiring Same as 2-7-1

4) ME remote controller wiring Same as 2-8

5) Maximum line distance via outdoor unit (1.25 mm

[AWG16] or larger)

Same as 2-7-4

(4) Wiring method

1) Indoor/outdoor transmission line Same as 2-7-2

Shielded cable connection

Same as 2-7-2

2) Transmission line for centralized control Same as 2-7-4

Shielded cable connection

Same as 2-7-4

3) MA remote controller wiring (When 2 remote controllers are connected to the system) (Group operation of indoor units) Same as 2-7-1

4) ME remote controller wiring (When 2 remote controllers are connected to the system) (Group operation of indoor units) Same as 2-8

5) LOSSNAY connection Same as 2-7-4

6) Switch setting Address setting is required as follows.

2 Restrictions

HWE13080 GB

49- 49 -

[2-9 Example System with an MA and an ME Remote Controller ]

(5) Address setting method

Pro-

ce-

dure

Unit or controller

1Opera-

tion with the

Indoor unit

Main unit

IC 01 to

MA remote controller

2Opera-

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

settings required.

Sub

remote controller

IC 01 to 50Assign the smallest address

IC 01 to

controller

ME remote controller

Main remote controller

Sub remote controller

RC 101 to

150

RC 151 to

200

3 LOSSNAY LC 01 to

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

setting

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 the 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

Main

101

- 50 -

GBHWE13080

[2-10 Restrictions on Refrigerant Pipes ]

2-10 Restrictions on Refrigerant Pipes

2-10-1 Restrictions on Refrigerant 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)

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

Indoor

HH'

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

Indoor Indoor Indoor

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

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

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 Restrictions

*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.

HWE13080 GB

- 51 -

[2-10 Restrictions on Refrigerant Pipes ]

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

[229]

[196]

[164]

[131]

[98]

[64]

Pipe length between main BC

controller and farthest indoor unit (m[ft])

[32]

0 5 10 15

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

[16] [32] [49]

HWE13080 GB

- 52 -

[2-10 Restrictions on Refrigerant Pipes ]

(2) System that requires more than 16 BC controller ports or with multiple BC controllers <Outdoor unit HP96 model or

below>

Outdoor unit

HH'

BC controller (main)

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

Junction pipe

(CMY-R160-J)

Indoor Indoor Indoor Indoor

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

Branch joint (CMY-Y202-G2)

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

Branch joint (

CMY-Y102S-G2)

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

BC controller (sub)

Indoor

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

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

controller

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

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

h3 15 [49] or less

controller

2 Restrictions

*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.

HWE13080 GB

- 53 -

[2-10 Restrictions on Refrigerant Pipes ]

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.

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.

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

[229]

[196]

[164]

[131]

[98]

[64]

Pipe length between main BC

controller and farthest indoor unit (m[ft])

[32]

0 5 10 15

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

[16] [32] [49]

HWE13080 GB

- 54 -

[2-10 Restrictions on Refrigerant Pipes ]

(3) System that requires more than 16 BC controller ports or with multiple BC controllers <Two-outdoor-unit system>

Branch joint (CMY-R100CBK2) The distributor on the low-pressure side must be placed in the outdoor unit that has a larger capacity

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)

BC controller (main)

Junction pipe

(CMY-R160-J)

Indoor Indoor Indoor Indoor

(CMY-Y102S-G2)

Branch joint (

CMY-Y102S-G2)

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

BC controller (sub)

Indoor

HH'

Outdoor unit

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

(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

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

controller

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

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

2 Restrictions

*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.

HWE13080 GB

- 55 -

[2-10 Restrictions on Refrigerant Pipes ]

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.

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-HP144TSKMU-A-H

[PURY-HP72, P96TKMU-A-H] [PURY-HP72, 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])

[PURY-HP192TSKMU-A-H] [PURY-HP192YSKMU-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]

100 110

100

[

PURY-HP144YSKMU-A

[

Aggregate length of all pipes(m[ft])

110

1000

[3280]

900

[2952]

800

[2624]

700

[2296]

600

[1968]

500

[1640]

400

[1312]

300

[984]

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])

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

[229]

[196]

[164]

[131]

[98]

[64]

Pipe length between main BC

controller and farthest indoor unit (m[ft])

[32]

0 5 10 15

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

[16] [32] [49]

]

100 110

HWE13080 GB

- 56 -

[2-10 Restrictions on Refrigerant Pipes ]

2-10-2 Restrictions on 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"] ø22.2 [7/8"] ø19.05 [3/4"]

144

ø28.58 [1-1/8"] ø22.2[7/8"] ø28.58 [1-1/8"] ø22.2 [7/8"]

192

Unit : mm [inch]

(2) Between BC controller and indoor unit (Sections a, b, c, d, e, and f )

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

P36, P48, P54

P72

P96 ø22.2

(3) Between the main and sub BC controllers (Section C)

Indoor unit

- P72

P73 - P108

P109 - P126

P145 - P168 ø15.88 [5/8"]

ø9.52 [3/8"] ø15.88 [5/8"] ø9.52 [3/8"] ø15.88 [5/8"]

ø19.05 [3/4"]

ø12.7 [1/2"]

[7/8"]

Refrigerant pipe size (Brazed connection on all models )

Liquid pipe High-pressure gas pipe Low-pressure gas pipe

ø9.52 [3/8"]

ø12.7 [1/2"]

Unit : mm [inch]

(Flare connection for all models)

ø19.05 [3/4"]

ø12.7 [1/2"]

ø15.88 [5/8"] ø19.05 [3/4"]

ø19.05 [3/4"]

ø28.58 [1-1/8"]P127 - P144

ø22.2 [7/8"]

ø22.2

[7/8"]

Unit : mm [inch]

ø22.2 [7/8"]

2 Restrictions

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.

HWE13080 GB

- 57 -

[2-10 Restrictions on Refrigerant Pipes ]

2-10-3 BC Controller Connection Method

(1) Size of the pipe that fits the standard BC controller ports

HP72 - HP96 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

Junction pipe kit (Model name: CMY-R160-J) (Optional accessory)

Indoor

Operation

Outdoor unit side PURY-HP72TKMU-A-H

PURY-HP72YKMU-A

PURY-HP96TKMU-A-H PURY-HP96YKMU-A

Indoor unit side ø9.52 [3/8"] (Flare connection)

Branch joint (Model name:CMY-Y102S-G2) (Optional accessory)

IndoorIndoorIndoor

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)

ø19.05 [3/4"]

(Brazed connection)

ø22.2 [7/8"]

(Brazed connection)

ø15.88 [5/8"]

(Flare connection)

* BC controllers can only be connected to HP72 - HP96 models of outdoor units.

HWE13080 GB

- 58 -

[2-10 Restrictions on Refrigerant Pipes ]

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.

2 Restrictions

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]

HWE13080 GB

- 59 -

[2-10 Restrictions on Refrigerant Pipes ]

(2) Size of the pipe that fits the main BC controller ports

HP72 - HP192 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

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"]

Pipe sections

Operation

High pressure side (Liquid) Low-pressure side (Gas)

Outdoor unit side

PURY-HP72TKMU-A-H PURY-HP72YKMU-A

PURY-HP96TKMU-A-H PURY-HP96YKMU-A

ø15.88 [5/8"]

(Brazed connection)

ø19.05 [3/4"]

(Brazed connection)

PURY-HP144TSKMU-A-H PURY-HP144YSKMU-A

PURY-HP192TSKMU-A-H

ø22.2 [7/8"]

(Brazed connection)

PURY-HP192YSKMU-A

Indoor unit side ø9.52 [3/8"] (Flare connection) ø15.88 [5/8"] (Flare connection)

Unit : mm [inch]

ø19.05 [3/4"]

(Brazed connection)

ø22.2 [7/8"]

(Brazed connection)

ø28.58 [1-1/8"]

(Brazed connection)

HWE13080 GB

- 60 -

[2-10 Restrictions on Refrigerant Pipes ]

(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

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

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.

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.

2 Restrictions

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"]

(Brazed connection)

ø22.2 [7/8"]

(Brazed connection)

P109 - P126

P127 - P144

P145 - P168

ø22.2 [7/8"]

(Brazed connection)

ø28.58 [1-1/8"]

(Brazed connection)

Unit : mm [inch]

Liquid pipe side

ø9.52 [3/8"]

(Brazed connection)

ø12.7 [1/2"]

(Brazed connection)

ø15.88 [5/8"]

(Brazed connection)

HWE13080 GB

- 61 -

[2-10 Restrictions on Refrigerant Pipes ]

HWE13080 GB

- 62 -

Chapter 3 Major Components, Their Functions and Refrigerant Circuits

3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit................................ 65

3-1-1 External Appearance of Outdoor Unit ................................................................................................... 65

3-1-2 Outdoor Unit Refrigerant Circuits.......................................................................................................... 66

3-2 Outdoor Unit Refrigerant Circuit Diagrams ...................................................................................... 67

3-3 Functions of the Major Components of Outdoor Unit ..................................................................... 69

3-4 Functions of the Major Components of Indoor Unit ........................................................................ 72

3-5 External Appearance and Refrigerant Circuit Components of BC Controller .............................. 73

3-6 BC Controller Refrigerant Circuit Diagrams..................................................................................... 76

3-7 Functions of the Major Components of BC Controller.................................................................... 79

HWE13080 GB

- 63 -

HWE13080 GB

- 64 -

[3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ]

3 Major Components, Their Functions and Refrigerant Circuits

3-1 External Appearance and Refrigerant Circuit Components of

Outdoor Unit

3-1-1 External Appearance of Outdoor Unit

(1) PURY-HP72, HP96TKMU-A-H

PURY-HP72, HP96YKMU-A

Fan guardFan guard

FanFan

Fin guardFin guard

Control boxControl box

Side panelsSide panels

3 Major Components, Their Functions and Refrigerant Circuits

Side panelsSide panels

Heat exchangerHeat exchanger

HWE13080 GB

Relay box

Relay box (TKMU-A-H only)

(TKMU-A-H only)

Front panelsFront panels

- 65 -

[3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ]

3-1-2 Outdoor Unit Refrigerant Circuits

(1) PURY-HP72, HP96TKMU-A-H

PURY-HP72, HP96YKMU-A

4-way valve (21S4a)

Check valve (CV7a)

Check valve (CV5a)

Solenoid valve (SV5b)

Low-pressure sensor (63LS)

Solenoid valve (SV9)

Solenoid valve (SV10)

Accumulator

High-pressure switch (63H1)

High-pressure sensor (63HS1)

Transformer box (YKMU-A only)

Solenoid valve (SV1a)

Compressor cover

Compressor

Low-pressure check joint

Base heater (TKMU-A-H only)

Check valve (CV3a)

Check valve (CV9a)

Check valve (CV8a)

Solenoid valve (SV11)

LEV5a

LEV4

High-pressure check joint

Refrigerant service valve on the low pressure side

Refrigerant service valve on the high pressure side

Check valve (CV6a)

Check valve (CV4a)

Check valve (CV2a)

Oil separator

HWE13080 GB

- 66 -

[3-2 Outdoor Unit Refrigerant Circuit Diagrams ]

3-2 Outdoor Unit Refrigerant Circuit Diagrams

(1) PURY-HP72, HP96TKMU-A-H(-BS)

PURY-HP72, HP96YKMU-A(-BS)

21S4a

63H1

63HS1

O/S

TH4

COMP

ST17

ST3

CJ1

SV11

SV9

SV10

CP1

SV1a

CP5

CP2

CP4

ST7

CJ2

ACC

ST6

TH5

63LS

TH9 TH11

CV8a

Solenoid valve block

SV4a

LEV5a

TH7

ST18

CV9a

SV5b

CV6a

CV4a

HEX

SV4b

TH6

LEV4

CP3

SV4d

CV7a

CV3a

CV2a

CV5a

ST1

BV1

BV2

HWE13080 GB

3 Major Components, Their Functions and Refrigerant Circuits

- 67 -

[3-2 Outdoor Unit Refrigerant Circuit Diagrams ]

(2) PURY-HP144, HP192TSKMU-A-H(-BS)

PURY-HP144, HP192YSKMU-A(-BS)

21S4a

63H1

63HS1

21S4a

63H1

63HS1

O/S

TH4

COMP

O/S

TH4

COMP

ST17

ST3

CJ1

SV11

SV9

SV10

SV11

SV9

SV10

CP1

SV1a

CP1

SV1a

CP5

CP2

CP4

CP5

CP2

CP4

ST7

CJ2

ACC

ST6

ACC

ST6

TH5

63LS

TH9 TH11

CV8a

TH9 TH11

CV8a

Solenoid valve block

SV4a

LEV5a

TH7

HEX

ST18

CV9a

Solenoid valve block

LEV5a

CV9a

TH7

SV5b

CV6a

CV4a

SV4a

HEX

ST18

SV5b

CV6a

SV4b

TH6

LEV4

SV4b

TH6

CP3

SV4d

CV7a

CV3a

CV2a

CV5a

BV1

ST1

BV2

High-pressure side junction pipe

CV5a

BV1

ST1

BV2

Low-pressure side distributor

HWE13080 GB

CV4a

LEV4

- 68 -

[3-3 Functions of the Major Components of Outdoor Unit ]

3-3 Functions of the Major Components of Outdoor Unit

Part

name

Compressor

High pressure sensor

Low pressure sensor

Pressure switch

Power supply transformer

Thermistor

Symbols

(functions)

MC1 (Comp1)

Notes Usage Specifications Check method

Adjusts the amount of circulating refrigerant by adjusting the operating frequency based on the operating pressure data

63HS1 1) Detects high pressure

2) Regulates frequency and provides high-pressure protection

63LS 1) Detects low pressure

2) Provides low-pressure protection

63H1 1) Detects high pressure

2) Provides high-pressure protection

Trans former YKMU

only

Decreases the power supply voltage (460V) supplied to the circuit board

TH4 (Discharge)

1) Detects discharge air temperature

2) Provides high-pressure protection

0°C[32°F] :698kohm 10°C[50°F] :413kohm 20°C[68°F] :250kohm 30°C[86°F] :160kohm 40°C[104°F] :104kohm 50°C[122°F] : 70kohm 60°C[140°F] : 48kohm 70°C[158°F] : 34kohm 80°C[176°F] : 24kohm 90°C[194°F] :17.5kohm 100°C[212°F] :13.0kohm 110°C[230°F] : 9.8kohm

HP72, HP96 models Low-pressure shell scroll compressor Wirewound resistance 20°C[68°F] :

0.092ohm (TKMU)

0.323ohm (YKMU)

Pressure 0~4.15 MPa [601psi]

63HS1

Vout 0.5~3.5V

123

0.071V/0.098 MPa [14psi]

Connector

Pressure [MPa] =1.38 x Vout [V]-0.69 Pressure [psi] =(1.38 x Vout [V] - 0.69) x 145

GND (Black)

Vout (White)

Vcc (DC5V) (Red)

Pressure

63LS

0~1.7 MPa [247psi] Vout 0.5~3.5V

123

0.173V/0.098 MPa [14psi] Pressure [MPa] =0.566 x Vout [V] - 0.283 Pressure [psi] =(0.566 x Vout [V] - 0.283) x 145

GND (Black)

Vout (White)

Vcc (DC5V) (Red)

4.15MPa[601psi] OFF setting

Primary rated voltage: 460V, 50/60Hz Secondary rated voltage: 229V (No-load voltage)

Degrees Celsius Resistance check

R = 7.465k

120

R = 4057

25/120

R =

7.465

exp

4057

273 t

393

3 Major Components, Their Functions and Refrigerant Circuits

HWE13080 GB

- 69 -

[3-3 Functions of the Major Components of Outdoor Unit ]

R = 15k

R = 3460 R = 15

0/80

3460

273 t

273

exp

Part

name

Thermistor

Symbols

(functions)

TH7 (Outdoor temperature)

Notes Usage Specifications Check method

1) Detects outdoor air tempera-

Degrees Celsius

ture

2) Controls fan operation

TH5 Fan operated on the 63LS and

TH5 values.

TH6 Controls defrosting during heating

TH9

operation

(Pipe temperature)

TH11

0°C[32°F] :15kohm 10°C[50°F] :9.7kohm 20°C[68°F] :6.4kohm 25°C[77°F] :5.3kohm 30°C[86°F] :4.3kohm 40°C[104°F] :3.1kohm

(Pipe temperature)

THHS Inverter heat sink temperature

Controls inverter cooling fan based on THHS temperature

Degrees Celsius

R = 17k

R = 4016

25/120

R = 17

THBOX Control box internal temperature detection

0°C[32°F] :161kohm 10°C[50°F] :97kohm 20°C[68°F] :60kohm 25°C[77°F] :48kohm 30°C[86°F] :39kohm 40°C[104°F] :25kohm

Solenoid valve

SV1a Dischargesuction bypass

1) High/low pressure bypass at start-up and stopping, and capacity control during lowload operation

AC208 - 230V Open while being powered/ closed while not being powered

2) High-pressure-rise prevention

SV4a - SV4d Heat

Controls outdoor unit heat ex-

changer capacity exchanger capacity control

SV5b Heat exchanger capacity con-

Prevents high-pressure-rise

Controls defrost cycle

AC208 - 230V Closed while being powered/ open while not being powered

trol

SV9 High-pressure-rise prevention AC208 - 230V

Open while being powered/ closed while not being powered

SV10 ON-defrost control AC208 - 230V

SV11

Open while being powered/ closed while not being powered

LEV LEV4 Injection amount control DC12V

LEV5a Evaporating temperature control

Opening of stepping motor driving valve 0-3000 pulses

exp

4016

273 t

Resistance check

323

Continuity check with a tester

Refer to the section "Continuity Test with a Tester". Continuity between white and orange. Continuity between yellow, brown, and blue.

White

Orange

Yellow

Brown Blue

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[3-3 Functions of the Major Components of Outdoor Unit ]

Part

name

4-way valve

Fan motor

Symbols

(functions)

Notes Usage Specifications Check method

21S4a Changeover between heating and

cooling

FAN motor Regulates the heat exchanger ca-

pacity by adjusting the operating

frequency and operating the pro-

peller fan based on the operating

pressure.

AC208-230V Dead: cooling cycle Live: heating cycle

(TKMU) AC200-230V, 920W (YKMU) AC380-460V, 920W

Continuity check with a tester

HWE13080 GB

3 Major Components, Their Functions and Refrigerant Circuits

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[3-4 Functions of the Major Components of Indoor Unit ]

3-4 Functions of the Major Components of Indoor Unit

Part

Name

Linear expansion valve

Thermistor

Symbol

(functions)

Notes Usage Specification Check method

LEV 1) Adjusts superheat at the

indoor heat exchanger outlet during cooling

2) Adjusts subcool at the heat exchanger outlet of the indoor unit during cooling

TH1

Indoor unit control (Thermo) (Suction air temperature)

TH2 (Pipe temperature)

1) Indoor unit control (Frost prevention, Hot adjust)

2) LEV control during heating operation (subcool detection).

TH3 (Gas pipe tem-

LEV control during cooling operation (superheat detection)

perature)

TH4

Indoor unit control (Thermo) (Outdoor air temperature)

Temperature

Indoor unit control (Thermo) sensor (Indoor air temperature)

DC12V Opening of stepping motor driving valve 0-(1800) pulses

R0=15k R

0/80

=3460 Rt = 15exp{3460( - )}

273+t

273

0°C [32°F]:15 k 10°C [50°F] :9.7 k 20°C [68°F]:6.4 k 25°C [77°F] :5.3 k 30°C [86°F] :4.3 k 40°C [104°F] :3.1 k

Refer to the section "Continuity Test with a Tester". Continuity between white, red, and orange. Continuity between yellow, brown, and blue.

White

Red

Orange

Yellow

Brown Blue

Resistance check

HWE13080 GB

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[3-5 External Appearance and Refrigerant Circuit Components of BC Controller ]

3-5 External Appearance and Refrigerant Circuit Components of

BC Controller

1. CMB-P NU-G, GA, HA (1) Front

Liquid pipe (Indoor unit side)

Gas pipe (Indoor unit side)

(2) Rear view <G type>

Gas/Liquid separator

Tube in tube heat exchanger

TH12

PS1

TH11

SVM1

LEV3 LEV1

PS3

TH16

3 Major Components, Their Functions and Refrigerant Circuits

TH15

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[3-5 External Appearance and Refrigerant Circuit Components of BC Controller ]

(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

HWE13080 GB

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[3-5 External Appearance and Refrigerant Circuit Components of BC Controller ]

2. CMB-P NU-GB, HB (1) Front

(2) Rear view

Liquid pipe (Indoor unit side)

Gas pipe (Indoor unit side)

TH12

LEV3

TH15

3 Major Components, Their Functions and Refrigerant Circuits

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[3-6 BC Controller Refrigerant Circuit Diagrams ]

3-6 BC Controller Refrigerant Circuit Diagrams

(1) CMB-P104 - P1016NU-G

Solenoid valve block

SVC/SVA/SVB

Gas/Liquid separator

TH12

HIC-A

TH11

LEV1

SVM1

TH15

LEV3

HIC-B

PS3PS1

TH16

Check valve block

HWE13080 GB

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[3-6 BC Controller Refrigerant Circuit Diagrams ]

(2) CMB-P108, P1010, P1013, P1016NU-GA (main)

SVC/SVA/SVB

Solenoid valve block

Gas/Liquid separator

TH12

HIC-A

(3) CMB-P104, P108NU-GB (sub)

Solenoid valve block

TH11

LEV2

TH12

HIC-C

LEV1

SVM1

TH15

LEV3

HIC-B

PS3PS1

TH16

Check valve block

SVM2

SVC/SVA/SVB

TH15

LEV3

HWE13080 GB

3 Major Components, Their Functions and Refrigerant Circuits

Check valve block

- 77 -

[3-6 BC Controller Refrigerant Circuit Diagrams ]

(4) CMB-P1016V-HA (main)

SVA,SVB,SVC

Gas/Liquid separator

TH12

HIC-A

(5) CMB-P1016NU-HB (sub)

PS3

PS1

TH11

LEV1

LEV2

SVM1

SVM1b

Solenoid valve block

HIC-B

TH15

LEV3

TH16

SVM2

SVM2b

SVC/SVA/SVB

TH12

HIC-C

TH15

LEV3

Check valve block

HWE13080 GB

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[3-7 Functions of the Major Components of BC Controller ]

3-7 Functions of the Major Components of BC Controller

(1) G type

Part name

Pressure sensor

Symbols

(functions)

PS1 (High pres-

Part

code

Usage Specifications Check method

1) Detects high pressure

2) LEV control

sure side)

PS3 (Intermediate pressure)

Thermistor TH11

(Liquid inlet

1) Detects intermediate pressure

2) LEV control

LEV control

(Liquid level control) temperature)

TH12

LEV control (Superheat) (Bypass outlet temperature)

TH15

LEV control (Superheat) (Bypass inlet temperature)

TH16

LEV control (Subcool) (Liquid refrigerant temperature)

Solenoid valve

SVM1 Opens during cooling and de-

frost modes

SV A Provides refrigerant to indoor

unit in cooling operation

SV B Provides refrigerant to indoor

unit in heating operation

SV C Provides refrigerant to indoor

unit in cooling operation

LEV LEV1 1) Liquid level control

LEV3

2) Pressure differential control

Pressure 0~4.15 MPa [601psi]

PS1

Vout 0.5~3.5V

123

0.071V/0.098 MPa [14psi]

Connector

R = 15k

R = 3460

0/80

R = 15

Pressure [MPa] =1.38 x Vout [V]-0.69 Pressure [psi] =(1.38 x Vout [V] - 0.69) x 145

GND (Black)

Vout (White)

Vcc (DC5V) (Red)

exp

3460

273 t

273

0°C[32°F] : 15kohm 10°C[50°F] :9.7kohm 20°C[68°F] :6.4kohm 25°C[77°F] :5.3kohm 30°C[86°F] :4.3kohm 40°C[104°F] :3.1kohm

AC208-230V Open while being powered/ closed while not being powered

DC12V Opening of a valve driven by a stepping motor 0-2000 pulses

Continuity check with a tester

Same as indoor LEV

3 Major Components, Their Functions and Refrigerant Circuits

HWE13080 GB

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[3-7 Functions of the Major Components of BC Controller ]

(2) GA type

Part name

Pressure sensor

Symbols

(functions)

PS1 (High pressure side)

PS3 (Intermediate pressure)

Thermistor TH11

(Liquid inlet temperature)

TH12 (Bypass outlet temperature)

TH15 (Bypass inlet temperature)

TH16 (Liquid refrigerant temperature)

Solenoid

SVM1 Opens during cooling and de-

valve

SVM2 Pressure differential control

SV A Provides refrigerant to indoor

SV B Provides refrigerant to indoor

SV C Provides refrigerant to indoor

LEV LEV1

LEV2

LEV3 Subcool control

Part

code

Usage Specifications Check method

1) Detects high pressure

2) LEV control

1) Detects intermediate pressure

2) LEV control

LEV control (Liquid level control)

LEV control (Superheat)

LEV control (Subcool)

frost modes

unit in cooling operation

unit in heating operation

unit in cooling operation

1) Liquid level control

2) Pressure differential control

Pressure 0~4.15 MPa [601psi]

PS1

Vout 0.5~3.5V

123

0.071V/0.098 MPa [14psi]

Connector

R = 15k

R = 3460

0/80

R = 15

Pressure [MPa] =1.38 x Vout [V]-0.69 Pressure [psi] =(1.38 x Vout [V] - 0.69) x 145

GND (Black)

Vout (White)

Vcc (DC5V) (Red)

exp

3460

273 t

273

0°C[32°F] : 15kohm 10°C[50°F] :9.7kohm 20°C[68°F] :6.4kohm 25°C[77°F] :5.3kohm 30°C[86°F] :4.3kohm 40°C[104°F] :3.1kohm

AC208-230V Open while being powered/ closed while not being powered

DC12V Opening of a valve driven by a stepping motor 0-2000 pulses

Continuity check with a tester

Same as indoor LEV

HWE13080 GB

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[3-7 Functions of the Major Components of BC Controller ]

(3) GB type

Part name

Symbols

(functions)

Thermistor TH12

(Bypass outlet temperature)

TH15 (Bypass inlet temperature)

Part

code

Usage Specifications Check method

LEV control (Superheat)

R = 15k

R = 3460

0/80

R = 15

0°C[32°F] : 15kohm 10°C[50°F] :9.7kohm 20°C[68°F] :6.4kohm 25°C[77°F] :5.3kohm 30°C[86°F] :4.3kohm 40°C[104°F] :3.1kohm

Solenoid valve

SV A Provides refrigerant to indoor

unit in cooling operation

SV B Provides refrigerant to indoor

unit in heating operation

AC208-230V Open while being powered/ closed while not being powered

SV C Provides refrigerant to indoor

unit in cooling operation

LEV LEV3 Pressure differential control DC12V

Opening of a valve driven by a stepping motor 0-2000 pulses

exp

3460

273 t

273

Continuity check with a tester

Same as indoor LEV

HWE13080 GB

3 Major Components, Their Functions and Refrigerant Circuits

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[3-7 Functions of the Major Components of BC Controller ]

(4) HA type

Part name

Pressure sensor

Symbols

(functions)

PS1 (High pressure side)

PS3 (Intermediate pressure)

Thermistor TH11

(Liquid inlet temperature)

TH12 (Bypass outlet temperature)

TH15 (Bypass inlet temperature)

TH16 (Liquid refrigerant temperature)

Solenoid

SVM1 Opens during cooling and de-

valve

SVM1b Opens during cooling and de-

SVM2 Pressure differential control

SVM2b Pressure differential control

SV A Provides refrigerant to indoor

SV B Provides refrigerant to indoor

SV C Provides refrigerant to indoor

LEV LEV1

LEV2

LEV3 Subcool control

Part

code

Usage Specifications Check method

1) Detects high pressure

2) LEV control

1) Detects intermediate pressure

2) LEV control

LEV control (Liquid level control)

LEV control (Superheat)

LEV control (Subcool)

frost modes

unit in cooling operation

unit in heating operation

unit in cooling operation

1) Liquid level control

2) Pressure differential control

Pressure 0~4.15 MPa [601psi]

PS1

Vout 0.5~3.5V

123

0.071V/0.098 MPa [14psi]

Connector

R = 15k

R = 3460

0/80

R = 15

Pressure [MPa] =1.38 x Vout [V]-0.69 Pressure [psi] =(1.38 x Vout [V] - 0.69) x 145

GND (Black)

Vout (White)

Vcc (DC5V) (Red)

exp

3460

273 t

273

0°C[32°F] : 15kohm 10°C[50°F] :9.7kohm 20°C[68°F] :6.4kohm 25°C[77°F] :5.3kohm 30°C[86°F] :4.3kohm 40°C[104°F] :3.1kohm

AC208-230V Open while being powered/ closed while not being powered

DC12V Opening of a valve driven by a stepping motor 0-2000 pulses

Continuity check with a tester

Same as indoor LEV

HWE13080 GB

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[3-7 Functions of the Major Components of BC Controller ]

(5) HB type

Part name

Symbols

(functions)

Thermistor TH12

(Bypass outlet temperature)

TH15 (Bypass inlet temperature)

Part

code

Usage Specifications Check method

LEV control (Superheat)

R = 15k

R = 3460

0/80

R = 15

0°C[32°F] : 15kohm 10°C[50°F] :9.7kohm 20°C[68°F] :6.4kohm 25°C[77°F] :5.3kohm 30°C[86°F] :4.3kohm 40°C[104°F] :3.1kohm

Solenoid valve

SV A Provides refrigerant to indoor

unit in cooling operation

SV B Provides refrigerant to indoor

unit in heating operation

AC208-230V Open while being powered/ closed while not being powered

SV C Provides refrigerant to indoor

unit in cooling operation

LEV LEV3 Pressure differential control DC12V

Opening of a valve driven by a stepping motor 0-2000 pulses

exp

3460

273 t

273

Continuity check with a tester

Same as indoor LEV

HWE13080 GB

3 Major Components, Their Functions and Refrigerant Circuits

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[3-7 Functions of the Major Components of BC Controller ]

HWE13080 GB

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Chapter 4 Electrical Components and Wiring Diagrams

4-1 Outdoor Unit Circuit Board Arrangement......................................................................................... 87

4-1-1 Outdoor Unit Control Box ...................................................................................................................... 87

4-1-2 Transformer Box ................................................................................................................................... 89

4-2 Outdoor Unit Circuit Board Components ......................................................................................... 90

4-2-1 Control Board ........................................................................................................................................ 90

4-2-2 M-NET Board (Transmission Power Supply Board) ............................................................................. 91

4-2-3 INV Board ............................................................................................................................................. 92

4-2-4 Fan Board ............................................................................................................................................. 94

4-2-5 Noise Filter ............................................................................................................................................ 96

4-3 Outdoor Unit Electrical Wiring Diagrams ......................................................................................... 98

4-4 Transmission Booster Electrical Wiring Diagrams ....................................................................... 100

4-5 BC Controller Circuit Board Arrangement ..................................................................................... 101

4-5-1 BC Controller Control Box................................................................................................................... 101

4-6 BC Controller Circuit Board Components...................................................................................... 102

4-6-1 BC Board ............................................................................................................................................ 102

4-6-2 Four-Relay Board................................................................................................................................ 103

4-6-3 Ten-Relay Board ................................................................................................................................. 103

4-7 BC Controller Electrical Wiring Diagrams...................................................................................... 104

HWE13080 GB

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HWE13080 GB

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[4-1 Outdoor Unit Circuit Board Arrangement ]

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)

4 Electrical Components and Wiring Diagrams

4-1 Outdoor Unit Circuit Board Arrangement

4-1-1 Outdoor Unit Control Box

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-HP72, HP96TKMU-A-H

Terminal block for power supply (TB1)

Ground terminal

Note 1

Smoothing capacitor (C1)

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) Disconnect the outdoor unit fan board connector (CNINV) before performing maintenance work. 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) to the fan board after completion of maintenance work.

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.

HWE13080 GB

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Terminal block for transmission line (TB3, TB7)

4 Electrical Components and Wiring Diagrams

[4-1 Outdoor Unit Circuit Board Arrangement ]

INV board

Noise filter

DC reactor

(DCL)

(72C)

Capacitor

(C100)

2. PURY-HP72, HP96YKMU-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)

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) Disconnect the outdoor unit fan board connector (CNINV) before performing maintenance work. To plug or unplug-

5) To connect wiring to TB7, check that the voltage is 20VDC or below.

6) Reconnect the connector (CNINV) to the fan board after completion of maintenance work.

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.

HWE13080 GB

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[4-1 Outdoor Unit Circuit Board Arrangement ]

Transformer (T03)

Transformer (T02)

4-1-2 Transformer Box

(1) PURY-HP72, HP96YKMU-A

HWE13080 GB

4 Electrical Components and Wiring Diagrams

- 89 -

Mitsubishi PURY-HP72TKMU-A, PURY-HP192T, PURY-HP72TKMU-A-H, PURY-HP72YKMU-A, PURY-HP72YKMU-A-H Service Handbook

Specifications and Main Features

Frequently Asked Questions

User Manual