Mitsubishi P120, P144TYJMU-A, P216, P240, P264 User Manual

Models

PUHY-P72, P96, P120, P144T(Y)JMU-A PUHY-P168, P192, P216, P240, P264, P288T(Y)SJMU-A PUHY-P312, P336, P360T(Y)SJMU-A

WARNING

CAUTION

WARNING

Safety Precautions

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

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

the risk of serious injury or death.

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

the risk of serious injury or damage to the unit.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Do not touch the heat exchanger fins.

The fins are sharp and dangerous.

HWE09120 GB

ii

WARNING

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

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

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

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

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

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

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

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

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

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

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

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

Only use accessories recommended by MITSUBISHI.

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

Control box houses high-voltage parts.

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

HWE09120 GB

ii

CAUTION

Precautions for handling units for use with R410A

Do not use the existing refrigerant piping.

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

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

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

existing pipes to burst.

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

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

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

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

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

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

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

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

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

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

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

If the refrigerant or the refrigerating machine oil left on

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

Infiltration of water may cause the refrigerating machine

oil to deteriorate.

Gas leak detectors for conventional refrigerants will not

detect an R410A leak because R410A is free of chlorine.

Do not use a charging cylinder.

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

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

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

Only use refrigerant R410A.

The use of other types of refrigerant that contain chlorine (i.e. R22) may cause the refrigerating machine oil to deteriorate.

HWE09120 GB

iiiiii

Before installing the unit

WARNING

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

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

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

The unit is not designed to preserve food products.

Do not use the unit in an unusual environment.

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

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

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

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

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

High-frequency medical equipment may interfere with the normal operation of the air conditioner or vice versa.

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

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

HWE09120 GB

iv

CAUTION

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

Properly ground the unit.

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

Do not put tension on the power supply wires.

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

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

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

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

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

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

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

Periodically check the installation base for damage.

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

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

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

Exercise caution when transporting products.

Products weighing more than 20 kg should not be carried

alone.

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

some products.

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

dangerous.

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

to prevent the unit from falling.

Properly dispose of the packing materials.

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

injury.

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

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

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

Otherwise, electric shock and/or fire may result.

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

HWE09120 GB

vv

Before the test run

CAUTION

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

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

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

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

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

Do not operate the unit without panels and safety guards.

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

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

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

Do not operate the unit without the air filter.

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

HWE09120 GB

vi

CONTENTS

I

II

III

IV

V

VI

VII

VIII

IX

X

Read Before Servicing

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

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

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

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

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

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

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

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

[9] Refrigerant Charging .............................................................................................................. 11

[10] Remedies to be taken in case of a Refrigerant Leak............................................................ 11

[11] Characteristics of the Conventional and the New Refrigerants ............................................ 12

[12] Notes on Refrigerating Machine Oil ...................................................................................... 13

Restrictions

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

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

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

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

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

[6] An Example of a System to which an ME Remote Controller is connected ........................... 38

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

ME Remote Controller are connected .................................................................................... 40

[8] Restrictions on Pipe Length.................................................................................................... 42

Outdoor Unit Components

[1] Outdoor Unit Components and Refrigerant Circuit ................................................................. 49

[2] Control Box of the Outdoor Unit.............................................................................................. 53

[3] Outdoor Unit Circuit Board...................................................................................................... 56

Remote Controller

[1] Functions and Specifications of MA and ME Remote Controllers .......................................... 69

[2] Group Settings and Interlock Settings via the ME Remote Controller .................................... 70

[3] Interlock Settings via the MA Remote Controller .................................................................... 74

[4] Using the built-in Temperature Sensor on the Remote Controller.......................................... 75

Electrical Wiring Diagram

[1] Electrical Wiring Diagram of the Outdoor Unit ........................................................................ 79

[2] Electrical Wiring Diagram of Transmission Booster................................................................ 84

Refrigerant Circuit

[1] Refrigerant Circuit Diagram .................................................................................................... 87

[2] Principal Parts and Functions ................................................................................................. 88

Control

[1] Functions and Factory Settings of the Dipswitches ................................................................ 95

[2] Controlling the Outdoor Unit ................................................................................................. 102

[3] Operation Flow Chart............................................................................................................ 115

Test Run Mode

[1] Items to be checked before a Test Run ................................................................................ 123

[2] Test Run Method .................................................................................................................. 124

[3] Operating Characteristic and Refrigerant Amount................................................................ 125

[4] Adjusting the Refrigerant Amount......................................................................................... 125

[5] Refrigerant Amount Adjust Mode.......................................................................................... 128

[6] The following symptoms are normal. .................................................................................... 130

[7] Standard Operation Data (Reference Data) ......................................................................... 131

Troubleshooting

[1] Error Code Lists.................................................................................................................... 155

[2] Responding to Error Display on the Remote Controller........................................................ 158

[3] Investigation of Transmission Wave Shape/Noise ............................................................... 237

[4] Troubleshooting Principal Parts............................................................................................ 240

[5] Refrigerant Leak ................................................................................................................... 274

[6] Compressor Replacement Instructions................................................................................. 275

[7] Troubleshooting Using the Outdoor Unit LED Error Display................................................. 278

HWE09120 GB

LED Monitor Display on the Outdoor Unit Board

[1] How to Read the LED on the Service Monitor ...................................................................... 281

HWE09120 GB

I

Read Before Servicing

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

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

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

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

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

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

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

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

[9] Refrigerant Charging........................................................................................................ 11

[10] Remedies to be taken in case of a Refrigerant Leak .......................................................11

[11] Characteristics of the Conventional and the New Refrigerants .......................................12

[12] Notes on Refrigerating Machine Oil ................................................................................. 13

HWE09120 GB

- 1 -

- 2 -

[ I Read Before Servicing ]

CAUTION

I Read Before Servicing

[1] Read Before Servicing

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

Multi air conditioner for building application CITY MULTI TJMU-A, YJMU-A series R410A

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

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

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

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

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

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

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

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

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

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

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

HWE09120 GB

- 3 -

[ I Read Before Servicing ]

[2] Necessary Tools and Materials

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

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

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

Tools/Materials Use Notes

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

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

Refrigerant Recovery Cylinder Refrigerant recovery

Refrigerant Cylinder Refrigerant charging The refrigerant type is indicated. The

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

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

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

Tools/Materials Use Notes

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

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

Flare Tool Flare processing Flare processing dimensions for the

Refrigerant Recovery Equipment Refrigerant recovery May be used if compatible with

high-pressure side

conventional model.

cylinder is pink.

than that of the current port.

may be used.

is attached.

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

R410A.

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

Tools/Materials Use Notes

Vacuum Pump with a Check Valve Vacuum drying

Bender Bending pipes

Torque Wrench Tightening flare nuts Only the flare processing dimensions

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

Pipe Cutter Cutting pipes

Welder and Nitrogen Cylinder Welding pipes

Refrigerant Charging Meter Refrigerant charging

Vacuum Gauge Vacuum level check

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

Tools/Materials Use Notes

Charging Cylinder Refrigerant charging Prohibited to use

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

HWE09120 GB

- 4 -

[ I Read Before Servicing ]

[3] Piping Materials

Do not use the existing piping!

1. Copper pipe materials

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

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

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

selves.

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

2. Types of copper pipes

Maximum working pressure Refrigerant type

3.45 MPa [500psi] R22, R407C etc.

4.30 MPa [624psi] R410A etc.

3. Piping materials/Radial thickness

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

at the same radial thickness.

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

ø6.35 [1/4"] 0.8t

ø9.52 [3/8"] 0.8t

ø12.7 [1/2"] 0.8t

ø15.88 [5/8"] 1.0t

ø19.05 [3/4"] 1.0t

ø22.2 [7/8"] 1.0t

ø25.4 [1"] 1.0t

ø28.58 [1-1/8"] 1.0t

ø31.75 [1-1/4"] 1.1t

ø34.93 [1-3/8"] 1.1t

ø41.28 [1-5/8"] 1.2t

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

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

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

that meet the local standards.

O-material (Annealed)

1/2H-material,

H-material (Drawn)

HWE09120 GB

- 5 -

[ I Read Before Servicing ]

Dimension A

Dimension B

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

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

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.

HWE09120 GB

- 6 -

[ I Read Before Servicing ]

[4] Storage of Piping

1. Storage location

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

2. Sealing the pipe ends

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

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

[5] Pipe Processing

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

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

HWE09120 GB

- 7 -

[ I Read Before Servicing ]

[6] Brazing

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

Example: Inside the brazed connection

Use of oxidized solder for brazing Use of non-oxidized solder for brazing

1. Items to be strictly observed

Do not conduct refrigerant piping work outdoors if raining. Use non-oxidized solder. 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.

HWE09120 GB

- 8 -

[ I Read Before Servicing ]

[7] Air Tightness Test

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

Halide torch R22 leakage detector

1. Items to be strictly observed

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

ness, taking temperature variations into account.

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

2. Reasons

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

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

3. Notes

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

HWE09120 GB

- 9 -

[ I Read Before Servicing ]

[8] Vacuum Drying (Evacuation)

(Photo1) 15010H (Photo2) 14010

Recommended vacuum gauge: ROBINAIR 14010 Thermistor Vacuum Gauge

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

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

2. Standard of vacuum degree (Photo 2)

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

3. Required precision of vacuum gauge

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

4. Evacuation time

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

moves moisture in the pipes.)

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

1Torr(130Pa) is acceptable.

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

drying.

5. Procedures for stopping vacuum pump

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

6. Special vacuum drying

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

etrated the system or that there is a leak.

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

0.5kgf/cm

2

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

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

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

HWE09120 GB

- 10 -

[ I Read Before Servicing ]

[9] 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.

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

If the refrigerant leaks out, it may be replenished. The entire refrigerant does not need to be replaced. (Charge refrigerant in the liquid state.) Refer to "IX [5] Refrigerant Leak."(page 274)

HWE09120 GB

- 11 -

[ I Read Before Servicing ]

[11] Characteristics of the Conventional and the New Refrigerants

1. Chemical property

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

New Refrigerant (HFC type) Conventional Refriger-

ant (HCFC type)

R410A R407C R22

R32/R125 R32/R125/R134a R22

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

Type of Refrigerant Pseudo-azeotropic

Refrigerant

Non-azeotropic

Refrigerant

Single Refrigerant

Chloride Not included Not included Included

Safety Class A1/A1 A1/A1 A1

Molecular Weight 72.6 86.2 86.5

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

Steam Pressure

1.557/226 0.9177/133 0.94/136

(25°C,MPa/77°F,psi) (gauge)

Saturated Steam Density (25°C,kg/m

3

/77°F,psi)

64.0 42.5 44.4

Flammability Nonflammable Nonflammable Nonflammable

Ozone Depletion Coefficient (ODP)

Global Warming Coefficient (GWP)

Refrigerant Charging Method Refrigerant charging in

Replenishment of Refrigerant after a Refrigerant

*1

*2

0 0 0.055

1730 1530 1700

the liquid state

Refrigerant charging in

the liquid state

Refrigerant charging in

the gaseous state

Available Available Available

Leak

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

is used as a reference

2

2. Refrigerant composition

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

3. Pressure characteristics

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

Pressure (gauge)

Temperature (°C/°F)

R410A R407C R22

MPa/psi MPa/psi MPa/psi

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

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

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

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

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

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

HWE09120 GB

- 12 -

[ I Read Before Servicing ]

[12] Notes on Refrigerating Machine Oil

1. Refrigerating machine oil in the HFC refrigerant system

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

Refrigerant Refrigerating machine oil

R22 Mineral oil

R407C Ester oil

R410A Ester oil

2. Effects of contaminants

*1

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

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

Cause Symptoms Effects on the refrigerant cycle

Water infiltration Frozen expansion valve

and capillary tubes

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

Clogged expansion valve, capillary tubes, and drier

Hydrolysis

Air infiltration Oxidization

Adhesion to expansion valve and capillary tubes

Sludge formation and adhesion Acid generation Oxidization Oil degradation

Poor cooling performance

Infiltration of contaminants

Dust, dirt

Infiltration of contaminants into the compressor

Compressor overheat

Burn-in on the orbiting scroll

Sludge formation and adhesion Clogged expansion valve and capillary tubes

Mineral oil etc.

Poor cooling performance Compressor overheat

Oil degradation Burn-in on the orbiting scroll

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

HWE09120 GB

- 13 -

[ I Read Before Servicing ]

- 14 -

GBHWE09120

II

Restrictions

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

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

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

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

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

[6] An Example of a System to which an ME Remote Controller is connected.....................38

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

ME Remote Controller are connected.............................................................................. 40

[8] Restrictions on Pipe Length ............................................................................................. 42

HWE09120 GB

- 15 -

- 16 -

[ II Restrictions ]

II Restrictions

[1] System configuration

1. Table of compatible indoor units

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

Outdoor

units

Composing units Maximum total capacity

of connectable indoor

units

Maximum number of connectable in-

door units

Types of connectable in-

door units

72 - - - 36 - 93 15 P06 - P96models

96 - - - 48 - 124 20

R410A series indoor units

120 - - - 60 - 156 26

144 - - - 72 - 187 31

168 96 72 - 84 - 218 36

192 120 72 - 96 - 249 41

216 120 96 - 108 - 280 46

240 120 120 - 120 - 312 50

264 144 120 - 132 - 343

288 144 144 - 144 - 374

312 120 120 72 156 - 405

336 120 120 96 168 - 436

360 144 120 96 180 - 468

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.

HWE09120 GB

- 17 -

[ II Restrictions ]

TB 3 TB 7 TB 3 TB

7

TB

3

TB 3 TB

7

TB

7

TB 3 TB

7

TB

3

TB

7

TB 3 TB 7 TB 3 TB

7

TB

3

TB 3 TB

7

TB

7

TB 3 TB

7

TB

3

TB

7

2-core shielded cable

Indoor unit

Outdoor unit

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

Remote Controller

Indoor unit

Outdoor unit

Remote Controller

multiple-core cable

[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.

(2) Control wiring

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

Types and maximum allowable length of cables

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

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

1) M-NET transmission line

Cable type

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 via outdoor unit)

Facility type

All facility types

Type Shielded cable CVVS, CPEVS, MVVS

Number of cores

Cable size Larger than 1.25mm

500 m [1640ft] max. *The maximum overall line length from the power supply unit on the transmission lines for

2-core cable

2

[AWG16]

200 m [656ft] max.

centralized control to each outdoor unit or to the system controller is 200m [656ft] max.

HWE09120 GB

- 18 -

[ II Restrictions ]

2) Remote controller wiring

MA remote controller

*1

ME remote controller

Type CVV CVV

Number of cores

Cable type

Cable size

Maximum overall line length

2-core cable 2-core cable

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

2 *2

2 ) *3

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

The section of the cable that exceeds 10m

200 m [656ft] max.

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

2 *2

*3

*1 MA remote controller refers to MA remote controller (PAR-20MAU, PAR-21MAA), MA simple remote controller, and

wireless remote controller.

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

2

(AWG18) is recommended for easy handling.

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

cations shown in the parenthesis.

[3] Switch Settings and Address Settings

1. Switch setting

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

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

*3

CITY MULTI indoor unit Main/sub unit IC Outdoor units

LOSSNAY, OA processing unit

*1

LC Outdoor units

Air handling kit IC Outdoor units

and Indoor units

*3

and LOSSNAY

*3

or field supplied air handling

unit

ME remote controller Main/sub remote

RC Outdoor units

*3

controller

MA remote controller Main/sub remote

MA Indoor units

controller

CITY MULTI outdoor unit

*2

OC,OS1,OS2 Outdoor units

*3

*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, OS1, and OS2 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.

HWE09120 GB

- 19 -

[ II Restrictions ]

2. M-NET Address settings

(1) Address settings table

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

Unit or controller Symbol Address set-

Setting method Facto-

ting range

CITY MULTI indoor unit

M-NET adapter

Main/sub unit IC 00,

01 to 50

Assign the smallest address to the main indoor

*1

unit in the group, and assign sequential address numbers to the rest of the indoor units in the same group.

*4

M-NET control interface

Free Plan adapter

LOSSNAY, OA processing unit Air handling kit

LC 00,

01 to 50

Assign an arbitrary but unique address to each

*1

of these units after assigning an address to all indoor units.

ME remote controller

Main remote controller

Sub remote controller

RC 101 to 150 Add 100 to the smallest address of all the in-

door units in the same group.

RC 151 to 200

*2

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

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 OC,

OS1,

System controller Group remote

controller

00, 51 to 100

OS2

Assign sequential addresses to the outdoor

*1,*3

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

*5

GR,SC201 to 250 Assign an address that equals the sum of the

smallest group number of the group to be controlled and 200.

System remote controller

ON/OFF remote controller

SR,

SC

AN,

SC

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.

Schedule timer (compatible

ST,

SC

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

with M-NET)

Centralized controller AG-150A

TR,SC000

201 to 250

Assign an arbitrary but unused address within the range listed on the left to each unit. Be sure

to set it to "000" to control K-control units. G(B)-50A GB-24A

Expansion controller PAC-

TR 000

201 to 250

Assign an arbitrary but unused address within

the range listed on the left to each unit. Be sure

to set it to "000" to control K-control units. YG50ECA

BM adapter BAC-HD150

SC 000

201 to 250

Assign an arbitrary but unused address within

the range listed on the left to each unit. Be sure

to set it to "000" to control K-control units.

LM adapter LMAP03U

SC 201 to 250 Assign an arbitrary but unique address within

the range listed on the left to each unit.

ry set-

ting

00

101

Main

00

201

202

000

247

*1. Address setting is not required for a City Multi system that consists of a single refrigerant circuit (with some exceptions). *2. To set the ME remote controller address to "200", set the rotary switches to "00". *3. To set the outdoor unit address to "100," set the rotary switches to "50." *4. Some indoor units have 2 or 3 controller boards that require address settings.

No. 2 controller board address must be equal to the sum of the No. 1 controller board address and 1, and the No.3

controller board address must equal to the No. 1 controller address and 2.

*5. The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2 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).

HWE09120 GB

- 20 -

[ II Restrictions ]

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

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

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 the

*1

Grouped/not grouped

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 ter-

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

Leave CN41 as it is (Factory setting)

*2

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

system.

(3) Settings for the centralized control switch for the outdoor unit (Factory setting: SW2-1 are set to OFF.)

System configuration Centralized control switch settings *

1

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

Connection to the system controller Connected *

2

ON

*1 Set SW2-1 on all outdoor units in the same refrigerant circuit to the same setting. *2 When only the LM adapter is connected, leave SW2-1 to OFF (as it is).

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

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

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

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

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

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

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

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

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

Function

Power ON/OFF by the plug

*1,*2,*3

Automatic restoration after power failure

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

stopped

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

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

Indoor unit will remain stopped regardless of its operation status before power

Setting (SW1)

910

OFF ON

ON OFF

OFF ON

off (power failure).

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

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

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

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

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

*4 *5

HWE09120 GB

- 21 -

[ II Restrictions ]

CAUTION

(6) Miscellaneous settings

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

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

Type Usage Function

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

DEMAND (level) CN3D

input to the outdoor unit.

*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)

to be

used

*1

*2

Option

Adapter for external input (PACSC36NA-E)

Terminal

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

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

*5

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

Snow sensor signal

CN3S

input (level)

Auto-changeover CN3N

the outdoor unit.

Out-

How to extract signals from the outdoor unit

put

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

Operation status of the compressor

Error status

*5

*6

CN51 Adapter for

external output (PACSC37SA-E)

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

*2. For details, refer to (1) through (4) shown below.

*3. Low-noise mode is valid when Dip SW4-4 on the outdoor unit is set to OFF. When DIP SW4-4 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. When 3 outdoor units exist in one refrigerant circuitsystem, 12 levels of on-DEMAND are possible.

*4. By setting Dip SW5-5, the Low-noise mode can be switched between the Capacity priority mode and the Low-noise pri-

ority mode. When SW5-5 is set to ON: The Low-noise mode always remains effective. When SW5-5 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 mode is effective Capacity priority mode becomes effective

Cooling Heating Cooling Heating

TH7 < 30°C [86°F] and 63HS1 < 32kg/cm

2

TH7 > 3°C [37°F] and 63LS > 4.6kg/cm

TH7 > 35°C [95°F]

2

or 63HS1 > 35kg/cm

2

TH7 < 0°C [32°F] or 63LS < 3.9kg/cm

2

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

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

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

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

HWE09120 GB

- 22 -

[ II Restrictions ]

(1) CN51

(2) CN3S

CN51

X

Y

L

1

L

2

ecruos rewop pmaL

Distant control board

Relay circuit Adapter

1

Outdoor unit control board

Preparations

in the field

Maximum cable length is 10m

5 4 3

X

Y

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

X : Relay

Snow sensor : The outdoor fan runs when X is closed

in stop mode or thermostat mode.

X

CN3S

Preparations

in the field

Maximum cable length is 10m

Adapter

2

Outdoor unit control board

2

3

1

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

Relay circuit

(3) CN3N

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

Preparations

in the field

OFF

CoolingONHeating

Normal

Y

OFF

ON

X

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

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

CN3N

X

Y

Relay circuit

Adapter

2

Outdoor unit control board

Maximum cable length is 10m

1

2

3

Example of wiring connection

(4) CN3D

Relay circuit

X

Preparations

in the field

Y

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

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

Adapter

Maximum cable length is 10m

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

2

1 2

3

Outdoor unit control board

CN3D

1 2

3

Outdoor unit

2

control board

CN3D

Relay circuit

X

Preparations

in the field

X : Low-noise mode X : Relay

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

Adapter

Maximum cable length is 10m

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

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

fan frequency and maximum compressor frequency.

HWE09120 GB

- 23 -

[ II Restrictions ]

3. Demand control (1) General outline of control

Demand control is performed by using the external signal input to the 1-2 and 1-3 pins of CN3D on the outdoor units (OC, OS1, and OS2). Between 2 and 12 steps of demand control is possible by setting DIP SW4-4 on the outdoor units (OC, OS1, and OS2).

No Demand control switch

Input to CN3D *2

OC OS1 OS2

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

(b) 4 steps(0-50-75-100%) ON OFF OFF OC

(c) OFF ON OFF OS1

(d) OFF OFF ON OS2

(e) 8 steps(0-25-38-50-63-75-88-100%) ON ON OFF OC and OS1

(f) ON OFF ON OC and OS2

(g) OFF ON ON OS1 and OS2

DipSW4-4

(h) 12 steps(0-17-25-34-42-50-59-67-75-

ON ON ON OC, OS1, and OS2

84-92-100%)

*1. Available demand functions

P72-P144T(Y)JMU models (single-outdoor-unit system): 2 and 4 steps shown in the rows (a) and (b) in the table above

only.

P168-P288T(Y)SJMU models (two-outdoor-unit system OC+OS1): 2-8 steps shown in the rows (a), (b), (c), and (e) in the

table above only.

P312-P360T(Y)SJMU models (three-outdoor-unit system OC+OS1+OS2): 2-12 steps shown in the rows (a)-(h) in the table

above.

*2. External signal is input to CN3D on the outdoor unit whose SW4-4 is set to ON. When SW4-4 is set to OFF on all outdoor

units, the signal is input to the CN3D on the OC.

Outdoor units whose SW4-4 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% to 0% to 50% : The units may go into the Thermo-OFF mode. (Correct) 100% to 75% to 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 SW4-4 is set to

OFF.

When SW4-4 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. Performing 12-step demand in combination with the low-noise operation in a three-outdoor-unit system.

(2) Contact input and control content

1) SW4-4: OFF (Compressor ON/OFF, Low-noise mode)

CN3D 1-3P Compressor ON/OFF

*1

Open Compressor ON

Short-circuit Compressor OFF

CN3D 1-2P Low-noise mode

*2

Open OFF

Short-circuit ON

*1. When SW4-4 on the outdoor unit in one refrigerant circuit system is set to ON , this function cannot be used. *2. This function and the 4 levels or 8 levels on-DEMAND function can be used together. Input the order to CN3D 1-2P on

the outdoor unit whose SW4-4 is set to OFF.

HWE09120 GB

- 24 -

[ II Restrictions ]

If the step listed as the wrong example above is taken, thermo may go off. 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 capacity. When this function is enabled, the night mode cannot be enabled.

(Wrong)

(Correct)

100%

0%

75%

50%

Demand control

steps

Note the following steps to be taken when using the STEP DEMAND

(Example) When switching from 100% to 50%

2) When SW4-4 on one outdoor unit in one refrigerant circuit system is set to ON (4 levels of on-DEMAND)

(*3)

CN3D 1-2P

CN3D 1-3P Open Short-circuit

Open 100% (No DEMAND) 75%

Short-circuit 0% (Compressor OFF) 50%

*3. Input the order to CN3D on the outdoor unit whose SW4-4 is set to ON.

3) When SW4-4 on the two outdoor units in one refrigerant circuit system is set to ON (8 levels of on-DEMAND)

8 levels of on-DEMAND No.2 CN3D

1-2P Open Short-circuit

No.1 CN3D 1-2P 1-3P Open Short-circuit Open Short-circuit

Open Open 100% 50% 88% 75%

Short-circuit 50% 0% 38% 25%

Short-circuit Open 88% 38% 75% 63%

Short-circuit 75% 25% 63% 50%

(*4, *5)

*4. Input the order to CN3D on the outdoor unit whose SW4-4 is set to ON. *5. CN3D of No. 1, 2, 3 can be selected arbitrary with the outdoor unit whose SW4-4 is set to ON.

4) When SW4-4 on the all outdoor units in one refrigerant circuit system is set to ON (12 levels of on-DEMAND)

12 levels of on-DEMAND

No.1 CN3D

No.2 CN3D 1-2P Open

1-3P Open Short-circuit

No.3 CN3D 1-2P Open Short-circuit Open Short-circuit

1-2P 1-3P Open Short-

circuit

Open Open 100% 67% 92% 84% 67% 34% 59% 50%

Short-

67% 34% 59% 50% 34% 0% 25% 17%

circuit

Short-circuit Open 92% 59% 84% 75% 59% 25% 50% 42%

Short-

84% 50% 75% 67% 50% 17% 42% 34%

circuit

12 levels of on-DEMAND

No.1 CN3D

No.2 CN3D 1-2P Short-circuit

1-3P Open Short-circuit

No.3 CN3D 1-2P Open Short-circuit Open Short-circuit

1-2P 1-3P Open Short-

circuit

Open Open 92% 59% 84% 75% 84% 50% 75% 67%

Short-

59% 25% 50% 42% 50% 17% 42% 34%

circuit

*3. Input the order to CN3D on the outdoor unit whose SW4-4 is set to ON. *4. CN3D of No. 1, 2, 3 can be selected arbitrary with the outdoor unit whose SW4-4 is set to ON.

HWE09120 GB

Short-circuit Open 84% 50% 75% 67% 75% 42% 67% 59%

Shortcircuit

75% 42% 67% 59% 67% 34% 59% 50%

- 25 -

Open Short-

circuit

Open Short-

circuit

Open Short-

circuit

Open Short-

circuit

(*4)

Open Short-

circuit

Open Short-

circuit

[ II Restrictions ]

[4] Sample System Connection

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

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

System

configuration

System with one out-

1.

2.

door unit

System with one out-

door unit

Grouping of units in a

3.

system with multiple

outdoor units

System with one out-

4.

5.

door unit

System with one out-

door unit

Connection to the system controller

NO

With connection to transmission line

for centralized control

With connection to indoor-outdoor

transmission line

Address start up for in-

door and outdoor units

Automatic

address setup

Manual

address setup

Manual

address setup

Manual

address setup

Manual

address setup

Notes

Connection of multiple LOSSNAY units

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

System

configuration

System with one out-

1. door unit

Connection to the system controller

With connection to transmission line

for centralized control

Address start up for indoor

and outdoor units

Manual

address setup

Notes

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

System

configuration

System with one out-

1. door unit

Connection to the system controller

With connection to transmission

line for centralized control

Address start up for indoor and outdoor units

Manual

address setup

Notes

HWE09120 GB

- 26 -

[ II Restrictions ]

HWE09120 GB

- 27 -

[ II Restrictions ]

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

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

Leave the male connector on CN41 as it is.

SW2-1 OFF

Leave the male connector on CN41 as it is.

SW2-1 OFF

OS1 OS2

Leave the male connector on CN41 as it is.

SW2-1 OFF

00

TB3

TB7

M1 M2 M1 M2 M1 M2 M1 M2 M1 M2 M1 M2

TB3

S

TB7

TB3

S

OC

00 00

TB7

L2 L1

Group Group

IC

00

TB5 S TB

S

L3 L4

IC

00

15

1 2

m1

TB5 S TB

15

1 2

Interlock operation with the ventilation unit

LC

00

TB5

M1 M2 M1 M2 M1 M2

S

L11

m4

A B

MA

(2) Cautions

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

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

3) A transmission booster is required in a system to which more than 32 indoor units (26 units if one or more indoor units of the 72 model or above is connected) are connected.

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

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

A B

MA

L12 L13

Group Group

IC

A B

RC

IC

A B

MA

00 00

15

TB

TB5

M1 M2 M1 M2 M1 M2

S 1 2

m5

MA

A B

MA

A B

TB5 S TB

15

1 2

A B

MA

m2

m3

(3) Maximum allowable length

1) Indoor/outdoor transmission line

2

Maximum distance (1.25mm

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

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

3) MA remote controller wiring Maximum overall line length

(0.3 to 1.25mm

2

[AWG22 to 16]) m1 200m [656ft] m2+m3 200m [656ft] m4+m5 200m [656ft]

IC

00

TB5 S TB

15

1 2

- 28 -

GBHWE09120

[ II Restrictions ]

(4) Wiring method

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

for indoor-outdoor transmission line (TB3) on the outdoor units (OC, OS1, OS2) (Note), and terminals M1 and M2 on 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, OS1, and OS2 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, OS1, OS2), and the S terminal on the terminal block (TB5) on the indoor unit (IC) with the shield wire 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). (Nonpolarized two-wire)

When 2 remote controllers are connected to the system

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

Set one of the MA remote controllers to sub. (Refer to

(5) Address setting method

MA remote controller function selection or the installation 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 remote controller. (Non-polarized two-wire)

When performing a group operation of indoor units that

have different functions, "Automatic indoor/outdoor address setup" 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 outdoor unit.)

Refer to "[5] 2. Manual address setup for both indoor and

outdoor units" in the following cases: performing an interlock operation of part of the indoor units in the system with a LOSSNAY unit, using LOSSNAY alone without interlocking it with any units, performing an interlock operation of more than 16 indoor units with a LOSSNAY unit, or connecting two or more LOSSNAY units to indoor units in the same system.

5) Switch setting No address settings required.

Proce-

dures

Unit or controller

1 Indoor unit Main unit IC No settings re-

Sub unit IC

Address setting

range

quired.

Setting

method

Notes

- To perform a group operation of indoor units that have different functions,

Factory

setting

00

refer to [5] 2.(page 30)

2 LOSSNAY LC No settings re-

-00

quired.

3MA

remote controller

Main remote controller

Sub remote controller

MA No settings re-

quired.

MA Sub

remote controller

-Main

Settings to be made according to the remote controller function selection

4 Outdoor unit (Note) OC

OS1

No settings required.

-00

OS2

The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2. The outdoor units are designated as OC, OS1, and OS2 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).

HWE09120 GB

29- 29 -

[ II Restrictions ]

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

(1) Sample control wiring

Leave the male connector on CN41 as it is.

SW2-1 OFF

L1

Leave the male connector on CN41 as it is.

SW2-1 OFF

Leave the male connector on CN41 as it is.

SW2-1 OFF

53

TB3

TB7

M1 M2 M1 M2 M1 M2 M1 M2 M1 M2 M1 M2

S

TB7

TB3

S

L2

OC OS1 OS2

51 52

TB7

S

IC

01

TB5 S TB

M1 M2 M1 M2 M1 M2

L3 L4

Group Group

IC

02

15

1 2

TB5 S TB

15

1 2

TB5

Interlock operation with the ventilation unit

LC

05

S

L11

(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.

3) A transmission booster is required in a system to which more than 32 indoor units (26 units if one or more indoor units of the 72 model or above is connected) are connected.

A B

MA

L12 L13

Group

IC

A B

MA

IC

04 03

TB5

S

15

TB

1 2

A B

MA

TB5 S TB

15

1 2

(3) Maximum allowable length

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

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

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

M1 M2 M1 M2 M1 M2

TB5

LC

06

S

- 30 -

GBHWE09120

[ II Restrictions ]

(4) Wiring method

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

Shielded cable connection

Same as [5] 1.

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

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

When 2 remote controllers are connected to the system

Same as [5] 1.

Group operation of indoor units

Same as [5] 1.

(5) Address setting method

Proce-

dures

Unit or controller

1 Indoor unit Main

IC 01 to 50 Assign the smallest ad-

Address

setting

unit

Sub unit Assign sequential numbers

2 LOSSNAY LC 01 to 50 Assign an arbitrary but

3MA

remote controller

Main remote control-

MA No

settings required.

ler

Sub remote control-

MA Sub

remote controller

ler

4 Outdoor unit OC

51 to 100 Assign sequential address OS1 OS2

range

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

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

Interlock setting between the indoor units and LOSS-

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

5) Switch setting Address setting is required as follows.

Setting method Notes

To perform a group operadress to the main unit in the group.

tion of indoor units that

have different functions,

designate the indoor unit

starting with the address of the main unit in the same group +1. (Main unit ad-

in the group with the great-

est number of functions as

the main unit.

dress +1, main unit address +2, main unit address +3, etc.)

None of these addresses unique address to each of these units after assigning

may overlap any of the in-

door unit addresses. an address to all indoor units.

-Main

Settings to be made according to the remote controller function selection

To set the address to 100, to the outdoor units in the same refrigerant circuit.

set the rotary switches to

50. The outdoor units are automatically designated as OC, OS1, and OS2.(Note)

Factory

setting

00

The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2. The outdoor units are designated as OC, OS1, and OS2 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).

HWE09120 GB

31- 31 -

[ II Restrictions ]

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

L11

S

Leave the male connector on CN41 as it is.

SW2-1 OFF

To be left unconnected

OS1

52

TB3

TB7

S

Leave the male connector on CN41 as it is.

SW2-1 OFF

OS2

53

TB3

M1 M2 M1 M2 M1 M2

TB7

M1 M2 M1 M2 M1 M2

To be left unconnected

Move the male connector from CN41 to CN40.

SW2-1 OFF

OC

51

TB3

TB7

S

To be connected

Group

IC

01

15

TB5 S TB

1 2

M1 M2 M1 M2 M1 M2 M1 M2

A B

m2

L12

Group

IC

03

TB5 S TB

15

1 2

A B

Interlock operation with the ventilation unit

Group

IC

06

15

TB5 S TB

1 2

A B

TB5

LC

07

S

L31

Leave the male connector on CN41 as it is.

SW2-1 OFF

OS2

56

TB3

M1 M2 M1 M2 M1 M2

TB7

M1 M2 M1 M2 M1 M2

S

To be left unconnected

L21

Leave the male connector on CN41 as it is.

SW2-1 OFF

55

TB3

TB7

OS1

S

Leave the male connector on CN41 as it is.

SW2-1 OFF

To be left unconnected

54

TB3

TB7

OC

S

To be left unconnected

TB5

M1 M2

(2) Cautions

1) ME remote controller and MA remote controller can not 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.

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

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

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

6) A transmission booster is required in a system to which more than 32 indoor units (26 units if one or more indoor units of the 72 model or above is connected) are connected.

MA

m3

L22

IC

15

TB

S

1 2

Group

MA

IC

04 02

15

TB5 S TB

1 2 1 2

A B

MA

IC

05

TB5 TB15

S

M1 M2 M1 M2

(3) Maximum allowable length

1) Indoor/outdoor transmission line

2

Maximum distance (1.25mm

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

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

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

4) Maximum line distance via outdoor unit (1.25mm

2

[AWG16] or larger)

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

- 32 -

GBHWE09120

[ II Restrictions ]

(4) Wiring method

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

Only use shielded cables.

Shielded cable connection

Same as [5] 1.

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, OS1, and OS2 (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 auto-

matically designated as OC, OS1, and OS2 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) When not daisy-chaining TB7's on the outdoor units in

the same refrigerant circuit, connect the transmission line for centralized control to TB7 on the OC (Note a). To maintain centralized control even during an OC failure or

(5) Address setting method

a power failure, daisy-chain TB7 of OC, OS1, and OS2. (If there is a problem with the outdoor unit whose power jumper was moved from CN41 to CN40, centralized control is not possible, even if TB7's are daisy-chained).

Only use shielded cables.

Shielded cable connection

Daisy-chain the S terminal on the terminal block (TB7) on the outdoor units (OC, OS1, OS2) with the shield wire of the shielded cable. Short-circuit the earth terminal ( ) and the S terminal on the terminal block (TB7) on the outdoor unit whose power jumper connector is mated with CN40.

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

When 2 remote controllers are connected to the system

Same as [5] 1.

Group operation of indoor units

Same as [5] 1.

4) LOSSNAY connection Same as [5] 2.

5) Switch setting Address setting is required as follows.

Proce-

dures

1 Indoor

Unit or controller

Main unit IC 01 to 50 Assign the smallest ad-

unit

Address setting

range

Setting method Notes

dress to the main unit in the group.

Sub unit Assign sequential num-

bers 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.)

2 LOSSNAY LC 01 to 50 Assign an arbitrary but

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

3MA

remote controller

Main remote controller

Sub remote controller

4 Outdoor unit OC

MA No

settings required.

MA Sub

remote controller

Settings to be made according to the remote controller function selection

51 to 100 Assign sequential address OS1 OS2

to the outdoor units in the same refrigerant circuit.

-Main

The outdoor units are automatically designated as OC, OS1, and OS2. (Note)

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.

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

To set the address to 100, set the rotary switches to 50.

Factory

setting

00

The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2. The outdoor units are designated as OC, OS1, and OS2 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).

HWE09120 GB

33- 33 -

[ II Restrictions ]

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

(1) Sample control wiring

Interlock operation with

15

1 2

the ventilation unit

IC

03

TB5 S TB

1 2

LC

07

TB5

15

S

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

OS2

53

TB3

M1 M2 M1 M2 M1 M2

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

OS1

52

TB3

Move the male connector from CN41 to CN40.

SW2-1 OFF ON

OC

51

TB3

L12 L11

Group Group Group

IC

01

15

TB5 S TB

1 2

M1 M2 M1 M2 M1 M2 M1 M2

IC

02

TB5 S TB

L31

TB7

S

M1 M2 M1 M2 M1 M2

To be left unconnected

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

OS2

56

TB3

M1 M2 M1 M2 M1 M2

TB7

M1 M2 M1 M2 M1 M2

S

To be left unconnected

TB7

S

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

OS1

55

TB3

TB7

S

To be left unconnected

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

TB7

S

To be connected

OC

54

TB3

TB7

S

To be left unconnected

L32

System controller

A B S

TB5

Note1

A B

MA

L22 L21

IC

15

TB

S

1 2

A B

MA

TB5 S TB

m2 m1

m3

Note1 When only the LM adapter is connected, leave SW2-1 to OFF (as it is). Note2 LM adapters require the power supply capacity of single-phase AC 208/230V.

A B

MA

IC

Group Group

05 04

15

1 2

IC

06

TB5 S TB

15

1 2

A B

MA

A B

MA

LC

08

TB5

M1 M2 M1 M2 M1 M2 M1 M2

S

(2) Cautions

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

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

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 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.

6) A transmission booster is required in a system to which more than 32 indoor units (26 units if one or more indoor units of the 72 model or above is connected) are connected.

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

(3) Maximum allowable length

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

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

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

4) Maximum line distance via outdoor unit (1.25mm

2

[AWG16] or larger)

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

- 34 -

GBHWE09120

[ II Restrictions ]

(4) Wiring method

1) Indoor/outdoor transmission line Same as [5] 1. Only use shielded cables.

Shielded cable connection

Same as [5] 1.

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, OS1, and OS2) 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 (SW2-1) on the control board of all outdoor units to "ON."

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

matically designated as OC, OS1, and OS2 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) When not daisy-chaining TB7's on the outdoor units in

the same refrigerant circuit, connect the transmission line for centralized control to TB7 on the OC (Note a). To maintain centralized control even during an OC failure or a power failure, daisy-chain TB7 of OC, OS1, and OS2.

(5) Address setting method

(If there is a problem with the outdoor unit whose power jumper was moved from CN41 to CN40, centralized control is not possible, even if TB7's are daisy-chained).

Only use shielded cables.

Shielded cable connection

Daisy-chain the S terminal on the terminal block (TB7) on the outdoor units (OC, OS1, OS2) with the shield wire of the shielded cable. Short-circuit the earth terminal ( ) and the S terminal on the terminal block (TB7) on the outdoor unit whose power jumper connector is mated with CN40.

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

When 2 remote controllers are connected to the system

Same as [5] 1.

Group operation of indoor units

Same as [5] 1.

4) LOSSNAY connection 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 2-core cable)

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.

Proce-

dures

Unit or controller

Address

setting

range

Setting method Notes

1 Indoor unit Main unit IC 01 to 50 Assign the smallest address

to the main unit in the group.

Sub unit 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.)

2 LOSSNAY LC 01 to 50 Assign an arbitrary but

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

3MA

remote controller

Main remote control-

MA No

settings required.

- Enter the same indoor

ler Sub

remote control-

MA Sub

remote controller

Settings to be made according to the remote controller function selection

ler

4 Outdoor unit OC

51 to 100 Assign sequential address to OS1 OS2

the outdoor units in the same refrigerant circuit. The outdoor units are automatically designated as OC, OS1, and OS2. (Note)

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.

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

unit group settings on the system controller as the ones that were entered on the MA remote controller.

To set the address to 100, set the rotary switches to

50.

Factory

setting

00

Main

00

The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2. The outdoor units are designated as OC, OS1, and OS2 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).

HWE09120 GB

35- 35 -

[ II Restrictions ]

IC

TB5 S TB

15

1 2

01

IC

TB5 S TB

15

1 2

02

A B

MA

A B

MA

LC

TB5

S

07

IC

TB5

S

1 2

TB

15

IC

TB5 S TB

15

1 2

05 04

LC

TB5

S

08

IC

TB5 S TB

15

1 2

03

A B

MA

IC

TB5 S TB

15

1 2

06

A B

MA

A B

MA

M1 M2 M1 M2 M1 M2 M1 M2

M1 M2

M1 M2 M1 M2

L12 L11

L22 L21

m3

OC

TB3

TB7

S

51

m2 m1

OS1

TB3

TB7

S

52

OS2

TB3

TB7

M1 M2 M1 M2 M1 M2

S

53

OC

TB3

TB7

S

54

OS1

TB3

TB7

S

55

OS2

TB3

TB7

M1 M2 M1 M2 M1 M2

S

56

L31

A B S

L25

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

Note1

System controller

SW2-1 OFF ON

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

Leave the male connector on CN41 as it is.

Move the male connector from CN41 to CN40.

SW2-1 OFF ON

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

Leave the male connector on CN41 as it is.

Group Group Group

Group Group

Interlock operation with the ventilation unit

To be left unconnected

To be connected

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

(1) Sample control wiring

(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.

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)

5) Provide grounding to S terminal on the terminal block for

6) A maximum of 3 system controllers can be connected to

7) When the total number of indoor units exceeds 26, it may

8) In a system to which more than 18 indoor units including

must be performed only on one of the outdoor units.

transmission line for centralized control (TB7) on only one of the outdoor units.

the indoor-outdoor transmission line, with the exception that only one G(B)-50A may be connected.

not be possible to connect a system controller on the indoor-outdoor transmission line.

one or more indoor units of 72 model or above are connected, there may be cases in which the system controller cannot be connected to the indoor-outdoor transmission line.

(3) Maximum allowable length

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

L11+L12 200m [656ft]

2

[AWG16] or larger)

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

2) Transmission line for centralized control

- 36 -

L31+L21 200m [656ft]

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

4) Maximum line distance via outdoor unit (1.25mm

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

2

[AWG16] or larger)

GBHWE09120

[ II Restrictions ]

(4) Wiring method

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

for indoor-outdoor transmission line (TB3) on the outdoor units (OC, OS1, OS2) (Note a), terminals M1 and M2 on the terminal block for indoor-outdoor transmission line (TB5) on each indoor unit (IC), and the S terminal on the system controller. (Non-polarized two-wire)

Only use shielded cables.

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

matically designated as OC, OS1, and OS2. The outdoor units are designated as OC, OS1, and OS2 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, OS1, OS2), the S terminal on the terminal block (TB5) on the indoor unit (IC), and the S terminal on the system controller with the shield wire 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, OS1, and OS2 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 (SW2-1) on the control board of all outdoor units to "ON."

(5) Address setting method

b) When not daisy-chaining TB7's on the outdoor units in the

same refrigerant circuit, connect the transmission line for centralized control to TB7 on the OC (Note a). To maintain centralized control even during an OC failure or a power failure, daisy-chain TB7 of OC, OS1, and OS2. (If there is a problem with the outdoor unit whose power jumper was moved from CN41 to CN40, centralized control is not possible, even if TB7's are daisy-chained).

Only use shielded cables.

Shielded cable connection

Daisy-chain the S terminal on the terminal block (TB7) on the outdoor units (OC, OS1, OS2) with the shield wire of the shielded cable. Short-circuit the earth terminal ( ) and the S terminal on the terminal block (TB7) on the outdoor unit whose power jumper connector is mated with CN40.

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

When 2 remote controllers are connected to the system

Same as [5] 1.

Group operation of indoor units

Same as [5] 1.

4) LOSSNAY connection 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 twowire)

Indoor units must be interlocked with the LOSSNAY unit

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

5) Switch setting Address setting is required as follows.

Proce-

dures

1 Indoor

Unit or controller

Main unit IC 01 to 50 Assign the smallest address

unit

Sub unit Assign sequential numbers

Address set-

ting range

Setting method Notes

To perform a group opera-

to the main unit in the group.

tion of indoor units that have different functions, desig-

starting with the address of the main unit in the same group +1. (Main unit address +1, main unit address +2,

nate the indoor unit in the group with the greatest number of functions as the main unit.

Factory

setting

00

main unit address +3, etc.)

2 LOSSNAY LC 01 to 50 Assign an arbitrary but

unique address to each of these units after assigning an

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

00

address to all indoor units.

3MA

remote controller

4 Outdoor unit OC

Main remote controller

Sub remote controller

MA No

settings required.

MA Sub

remote controller

Settings to be made according to the remote controller function selection

51 to 100 Assign sequential address to OS1 OS2

the outdoor units in the same refrigerant circuit.

- Enter the same indoor unit group settings on the system controller as the ones that were entered on the MA remote controller.

To set the address to 100, set the rotary switches to 50.

Main

00

The outdoor units are automatically designated as OC, OS1, and OS2. (Note)

The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2. The outdoor units are designated as OC, OS1, and OS2 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).

HWE09120 GB

37- 37 -

[ II Restrictions ]

IC

TB5 S TB

15

1 2

01

IC

TB5 S TB

15

1 2

02

LC

TB5

S

07

IC

TB5

S

1 2

TB

15

IC

TB5 S TB

15

1 2

05 04

LC

TB5

S

08

IC

TB5 S TB

15

1 2

03

IC

TB5 S TB

15

1 2

06

A B

RC

101

A B

RC

102

A B

RC

103

Group

Group Group Group

M1 M2 M1 M2 M1 M2 M1 M2

L12 L11

L22 L21

L31

A B S

L32

Note1

System controller

Interlock operation with the ventilation unit

OC

TB3

TB7

S

51

m1

OS1

TB3

TB7

S

52

OS2

TB3

TB7

M1 M2 M1 M2 M1 M2

S

53

OC

TB3

TB7

S

54

OS1

TB3

TB7

S

55

OS2

TB3

TB7

M1 M2 M1 M2 M1 M2

S

56

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

Move the male connector from CN41 to CN40.

To be connected

To be left unconnected

104

A B

RC

154

A B

RC

m3

106

A B

RC

m2

Note1 When only the LM adapter is connected, leave SW2-1 to OFF (as it is). Note2 LM adapters require the power supply capacity of single-phase AC 208/230V.

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

(1) Sample control wiring

(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 3 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

5) Provide an electrical path to ground for the S terminal on

from CN41 to CN40 on only one of the outdoor units.

the terminal block for centralized control on only one of the outdoor units.

6) A transmission booster must be connected to a system in which the total number of connected indoor units ex-

7) A transmission booster is required in a system to which

ceeds 20.

more than 16 indoor including one or more indoor units of the 72 model or above are connected.

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

2) Transmission line for centralized control

3) M-NET remote controller wiring

4) Maximum line distance via outdoor unit

- 38 -

Same as [5] 3.

Same as [5] 4.

Maximum overall line length (0.3 to 1.25mm

2

[AWG22 to 16]) m1 10m [32ft] m2+m3 10m [32ft] If the standard-supplied cable must be extended, use a cable with a diameter of 1.25mm of the cable that exceeds 10m [32ft] must be included in the maximum indoor-outdoor transmission line distance

2

[AWG16]. The section

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

2

(1.25 mm Same as [5] 4.

[AWG16] min.)

2

[AWG18-14].

GBHWE09120

[ II Restrictions ]

(4) Wiring method

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

Shielded cable connection

Same as [5] 1.

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

Shielded cable connection

Same as [5] 4.

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

door-outdoor transmission line.

(5) Address setting method

Proce-

dures

1 Indoor

Unit or controller

Main unit IC 01 to 50 Assign the smallest ad-

Address setting

unit

Sub unit Assign sequential num-

2 LOSSNAY LC 01 to 50 Assign an arbitrary but

3 ME re-

mote controller

Main remote controller

Sub

RC 101 to 150 Add 100 to the main unit

RC 151 to 200 Add 150 to the main unit remote controller

4 Outdoor unit OC

51 to 100 Assign sequential adOS1 OS2

range

When 2 remote controllers are connected to the system

Refer to the section on Switch Setting.

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

Refer to the section on Switch Setting.

4) LOSSNAY connection Same as [5] 4.

5) Switch setting Address setting is required as follows.

Setting method Notes

To perform a group dress to the main unit in the group.

operation of indoor

units that have differ-

ent functions, desig-

bers starting with the address of the main unit in the same group +1. (Main unit address +1, main unit address +2,

nate the indoor unit in

the group with the

greatest number of

functions as the main

unit.

main unit address +3, etc.)

None of these adunique address to each of these units after assigning an address to all

dresses may overlap

any of the indoor unit

addresses. indoor units.

It is not necessary to

address in the group

set the 100s digit.

To set the address

to 200, set the rota-

address in the group

ry switches to 00.

To set the address to dress to the outdoor units in the same refrig-

100, set the rotary

switches to 50. erant circuit. The outdoor units are automatically designated as OC, OS1, and OS2. (Note)

Factory

setting

00

101

00

The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2. The outdoor units are designated as OC, OS1, and OS2 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).

HWE09120 GB

39- 39 -

[ II Restrictions ]

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

(1) Sample control wiring

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

TB3

M1 M2 M1 M2 M1 M2

L11 L12

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

TB3

Move the male connector from CN41 to CN40.

SW2-1 OFF ON

OC OS1 OS2

51 52 53

TB3

Group

IC

01

TB5 TB

M1 M2

S

1 2

Group

IC

02

15

TB5 TB

M1 M2

15

1 2

S

TB5 TB

M1 M2

06

S

IC

15

1 2

To be left unconnected

TB7

To be connected

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

OC

54

TB3

TB7

S

To be left unconnected

System controller

A B S

L31

TB7

M1 M2 M1 M2 M1 M2

S

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

OS2

56

TB3

M1 M2 M1 M2 M1 M2

TB7

S

M1 M2 M1 M2 M1 M2

TB7

To be left unconnected

S

L21 L22

Leave the male connector on CN41 as it is.

SW2-1 OFF ON

OS1

55

TB3

TB7

S

(2) Cautions

1) Be sure to connect a system controller.

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

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

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

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

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) A transmission booster must be connected to a system in which the total number of connected indoor units exceeds 20.

10) A transmission booster is required in a system to which more than 16 indoor including one or more indoor units of the 72 model or above are connected.

11) 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).

L32

Note1

TB5

M1 M2

S

IC

A B

MA

Group Group

IC

04 03

15

TB

1 2

A B

MA

TB5 TB

M1 M2

S

1 2

A B

104

RC

Note1 When only the LM adapter is connected, leave SW2-1 to OFF (as it is).

Note2 LM adapters require the power supply capacity of single-phase AC 208/230V.

A B

106

RC

IC

05

15

TB5 TB

M1 M2

S

15

1 2

(3) Maximum allowable length

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

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

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

4) M-NET remote controller wiring Same as [5] 1.

5) Maximum line distance via outdoor unit (1.25 mm

2

[AWG16] min. )

Same as [5] 4.

- 40 -

GBHWE09120

[ II Restrictions ]

(4) Wiring method

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

Shielded cable connection

Same as [5] 1.

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

Shielded cable connection

Same as [5] 4.

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

When 2 remote controllers are connected to the system

(5) Address setting method

Proce-

dures

1 Opera-

tion with the MA re-

Unit or controller

In-

Main unit IC 01 to 50 door unit

Sub unit

mote controller

MA remote controller

Main re-

mote con-

troller

Sub

remote

MA No

MA Sub

controller

2 Opera-

tion with the ME remote

Indoor unit

Main unit IC 01 to 50 Assign the smallest ad-

Sub unit

controller

ME remote controller

Main re-

mote con-

troller

Sub

RC 101 to

RC 151 to remote controller

3 LOSSNAY LC 01 to 50

4 Outdoor unit OC

OS1

OS2

Address

setting

range

settings required.

remote controller

150

200

51 to 100

Same as [5] 1.

Group operation of indoor units

Same as [5] 1.

4) M-NET remote controller wiring Same as [5] 1.

When 2 remote controllers are connected to the system

Same as [5] 1.

Group operation of indoor units

Same as [5] 1.

5) LOSSNAY connection Same as [5] 4.

6) Switch setting Address setting is required as follows.

Setting method Notes

Assign the smallest address 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.)

-

Settings to be made according to the remote controller function selection

dress 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.

Add 150 to the main unit

Assign an address smaller

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

Enter the same indoor unit

group settings 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.

Enter the indoor unit group

settings on the system controller (MELANS).

Assign an address larger than

those of the indoor units that are connected to 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.

It is not necessary to set

the 100s digit.

To set the address to 200,

set the rotary switches to

00.

address in the group.

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

Assign sequential address to the outdoor units in the same refrigerantcircuit. The outdoor units are automatically designated as OC, OS1, and OS2. (Note)

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

To set the address to 100, set the rotary switches to 50.

Factory

setting

00

Main

00

101

00

The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2. The outdoor units are designated as OC, OS1, and OS2 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).

HWE09120 GB

41- 41 -

[ II Restrictions ]

[8] Restrictions on Pipe Length

(1) End branching

P72 - P144 models

Outdoor unit

A

D

First branch (Branch joint)

B

Branch joint

(Outdoor unit above indoor unit)

(Outdoor unit below indoor unit)

' H

H

C

a

Indoor Indoor Indoor

1

L

d

Indoor Indoor Indoor

b

2

c

3

4

Operation Pipe sections

Length Total pipe length A+B+C+D

+a+b+c+d+e+f

Height difference

Total pipe length (L) from the outdoor unit to the farthest indoor unit

Total pipe length from the first branch to the farthest indoor unit ( )

Between indoor and outdoor units

Outdoor unit above indoor unit

Outdoor unit below in-

A+B+C+c or

A+D+f

B+C+c or

D+f

H 50 [164] or less

H' 40 [131] or less

door unit

Between indoor units h 15 [49] or less

Branch header

cap

e

5

f

6

h

Allowable length of

pipes

1000 [3280] or less

165 [541] or less

(Equivalent length 190

[623] or less)

40 [131] or less

Unit: m [ft]

HWE09120 GB

- 42 -

[ II Restrictions ]

P168 - P360 models The figure shows a system with three outdoor units. (P312-P360 models)

Note1 Install the pipe that connects the branch pipe and the outdoor units in

the way that it has a downward inclination toward the branch pipe.

Provide a trap on the pipe (gas pipe only) within 2 m from the joint pipe if the total length of the pipe that connects the joint pipe and the outdoor unit exceeds 2 m.

h2

B D A

C

Second gas refrigerant distributor Second liquid refrigerant distributor

First liquid refrigerant distributor First gas refrigerant distributor

H

First branch

h1

Downward inclination

Upward inclination

L

To indoor unit

(Note)

E F G I

a

Indoor Indoor Indoor Indoor

1

J K M

e

Indoor Indoor Indoor Indoor

5

c

b

d

E

3

2

g

f

6

4

i

7

8

Note : "Total sum of downstream unit model numbers" in the table is the sum of the model numbers of the units after point E in the figure.

Operation Pipe sections

2m [6ft]

2m [6ft] Max.

To indoor unit Joint pipe

Trap (gas pipe only)

To downstream units

Allowable length of

To indoor unit Joint pipe

pipes

Length Between outdoor units A+B+C+D 10 [32] or less

Total pipe length A+B+C+D+E+F+G+I+J

1000 [3280] or less

+K+M+a+b+c+d+e+f+g

+i

Total pipe length (L) from the outdoor unit to the farthest indoor unit

Total pipe length from the first branch to the far-

A(B)+C+E+J+K+M+i

F+G+I+d or J+K+M+i 40 [131] or less

165 [541] or less

(Equivalent length 190

[623] or less)

thest indoor unit ( )

Height difference

Between indoor and outdoor units H 50 [164] or less

(40 [131] or below if

outdoor unit is below in-

door unit)

Between indoor units h1 15 [49] or less

Between outdoor units h2 0.1[0.3] or less

Unit: m [ft]

HWE09120 GB

- 43 -

[ II Restrictions ]

1. Refrigerant pipe size (1) Diameter of the refrigerant pipe between the outdoor unit and the first branch (outdoor unit pipe size)

Outdoor unit set name

Liquid pipe size (mm) [inch] Gas pipe size (mm) [inch]

(total capacity)

72 model ø9.52 [3/8"] ø19.05 [3/4"]

96 model ø9.52 [3/8"]

120 model ø9.52 [3/8"]

*1

*2

ø22.2 [7/8"]

144 model ø12.7 [1/2"] ø28.58 [1-1/8"]

168 model ø15.88 [5/8"] ø28.58 [1-1/8"]

192 model ø15.88 [5/8"] ø28.58 [1-1/8"]

216 model ø15.88 [5/8"] ø28.58 [1-1/8"]

240 model ø15.88 [5/8"] ø28.58 [1-1/8"]

264 - 312 model ø19.05 [3/4"] ø34.93 [1-3/8"]

336 - 360 model ø19.05 [3/4"] ø41.28 [1-5/8"]

*1. Use ø12.7 [1/2"] pipes if the piping length exceeds 90 m [295 ft].

*2. Use ø12.7 [1/2"] pipes if the piping length exceeds 40 m [131 ft].

(2) Size of the refrigerant pipe between the first branch and the indoor unit (indoor unit pipe size)

model Pipe diameter (mm) [inch]

06 - 15 models Liquid pipe ø6.35 [1/4"]

Gas pipe ø12.7 [1/2"]

18 - 54 models Liquid pipe ø9.52 [3/8"]

Gas pipe ø15.88 [5/8"]

72 model Liquid pipe ø9.52 [3/8"]

Gas pipe ø19.05 [3/4"]

96 model Liquid pipe ø9.52 [3/8"]

Gas pipe ø22.2 [7/8"]

(3) Size of the refrigerant pipe between the branches for connection to indoor units

Total capacity of the

Liquid pipe size (mm) [inch] Gas pipe size (mm) [inch]

downstream units

- 54 ø9.52 [3/8"] ø15.88 [5/8"]

P55 - P72 ø9.52 [3/8"] ø19.05 [3/4"]

P72 - P108 ø9.52 [3/8"] ø22.2 [7/8"]

P109 - P144 ø12.7 [1/2"] ø28.58 [1-1/8"]

P145 - P240 ø15.88 [5/8"] ø28.58 [1-1/8"]

P241 - P308 ø19.05 [3/4"] ø34.93 [1-3/8"]

P309 - ø19.05 [3/4"] ø41.28 [1-5/8"]

HWE09120 GB

- 44 -

[ II Restrictions ]

(4) Size of the refrigerant pipe between the first distributor and the second distributor

Liquid pipe size (mm) [inch] Gas pipe size (mm) [inch]

ø19.05 [3/4"] ø34.93 [1-3/8"]

(5) Size of the refrigerant pipe between the first distributor or the second distributor and outdoor units

Liquid pipe size (mm) [inch] Gas pipe size (mm) [inch]

72 model ø9.52 [3/8"] ø22.2 [7/8"]

96 model

120 model ø12.7 [1/2"]

144 model ø28.58 [1-1/8"]

* Only applicable to the 144 model and below

HWE09120 GB

- 45 -

[ II Restrictions ]

- 46 -

GBHWE09120

III

Outdoor Unit Components

[1] Outdoor Unit Components and Refrigerant Circuit .......................................................... 49

[2] Control Box of the Outdoor Unit....................................................................................... 53

[3] Outdoor Unit Circuit Board............................................................................................... 56

HWE09120 GB

- 47 -

- 48 -

[ III Outdoor Unit Components ]

Fan

Control Control Box

Control Box

Fan guard

Fin guard

Front panel

Heat exchangerHeat exchangerHeat exchanger

III Outdoor Unit Components

[1] Outdoor Unit Components and Refrigerant Circuit

1. Front view of a outdoor unit (1) PUHY-P72, P96TJMU-A

PUHY-P72, P96YJMU-A

HWE09120 GB

- 49 -

[ III Outdoor Unit Components ]

Fan

Control Control BoxBox

Control box

Fan guard

Fin guard

Front panel

Heat exchanger

Contactor box

Transformer box

(YJMU-A only)

Transformer box

(YJMU-A only)

(2) PUHY-P120, P144TJMU-A

PUHY-P120, P144YJMU-A

HWE09120 GB

- 50 -

[ III Outdoor Unit Components ]

High-pressure sensor(63HS1)

High-pressure switch(63H1)

Accumulator

Transformer box (YJMU-A only)

Compressor cover

Compressor

Oil separator

Solenoid valve (SV1a)Solenoid valve (SV9)

Gas-side valve

Liquid-side valve

Linear expansion valve

(LEV2)

Solenoid valve(SV5b)

Linear expansion valve

(LEV1)

Subcool coil

High-pressure check joint

Low-pressure check joint

4-way valve(21S4a)

4-way valve(21S4b)

Check valve

Low-pressure sensor(63LS)

Accumulator

Transformer box (YJMU-A only)

Compressor cover

Compressor

Oil separator

Solenoid valve (SV1a)

Solenoid valve (SV9)Gas-side valveLiquid-side valve

Linear expansion valve

(LEV2)

Solenoid valve(SV5b)

Linear expansion valve

(LEV1)

Subcool coil

High-pressure

check joint

Low-pressure

check joint

4-way valve(21S4a)

4-way valve(21S4b)

Check valve

Low-pressure sensor (63LS)

High-pressure sensor(63HS1)High-pressure switch(63H1)

2. Refrigerant circuit (1) PUHY-P72TJMU-A

PUHY-P72YJMU-A

(2) PUHY-P96TJMU-A

PUHY-P96YJMU-A

HWE09120 GB

- 51 -

[ III Outdoor Unit Components ]

High-pressure sensor(63HS1)

Accumulator

Compressor cover

Compressor

Oil separator

Solenoid valve (SV1a)

Solenoid valve (SV9)

Gas-side valve

Liquid-side valve

Linear expansion valve (LEV2)

Solenoid valve(SV5b)

Linear expansion

valve(LEV1)

Subcool coil

High-pressure check joint

Low-pressure check joint

4-way valve(21S4a)

4-way valve(21S4b)

Check valve

Low-pressure sensor(63LS)

High-pressure switch (63H1)

4-way valve(21S4c)

Solenoid valve(SV5c)

(3) PUHY-P120, P144TJMU-A

PUHY-P120, P144YJMU-A

The YJMU model has a transformer box.

HWE09120 GB

- 52 -

[ III Outdoor Unit Components ]

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 voltage across terminals FT-P and FT-N (YJMU) on the INV board or the voltage at both ends of the main capacitor (C1) (TJMU) is 20VDC or below. (It takes about 10 minutes to discharge electricity after the power supply is turned off.)

Electromagnetic relay(72C)

DC reactor (DCL)

Fan board

Rush current protection resistor (R1) Note.2

Noise filter

Note.2

Terminal block for

power supply

(TB1)

Note.1

Ground terminal

Smoothing capacitor(C1)

INV board

Terminal block for transmission line (TB3, TB7)

M-NET board

Control board

[2] Control Box of the Outdoor Unit

1. PUHY-P72, P96TJMU-A

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.

HWE09120 GB

- 53 -

[ III Outdoor Unit Components ]

Current sensor

(ACCT3)

Note.2

Fan board

INV board Control board

DC reactor (DCL)

Diode stack

Noise filter

Current sensor

(DCCT1)

Terminal block for

power supply

(TB1)

Ground terminal

Smoothing capacitor(C1)

Note.1

Current sensor (ACCT2)

Current sensor (ACCT1)

IPM

Terminal block for transmission line (TB3, TB7)

M-NET board

Electromagnetic relay

(72C)

INV board

Terminal block for power supply

(TB1)

Noise filter

DC reactor (DCL)

Electromagnetic relay(72C)

Capacitor(C100)

Rush current protection resistor (R1,R5) Note.2

Fan board

Control board

M-NET board

Terminal block for transmission line (TB3, TB7)

Note.1

Fuse(F4)

Fuse(F5)

Ground terminal

2. PUHY-P96, P120, P144TJMU-A

3. PUHY-P72, P96, P120, P144YJMU-A

1) Exercise caution not to damage the bottom and the front panel of the control box. Damage to these parts affect the water-

2) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the ter-

HWE09120 GB

proof and dust proof properties of the control box and may result in damage to its internal components.

minals to remove them.

- 54 -

[ III Outdoor Unit Components ]

4. Transformer Box (PUHY-P72, P96, P120, P144YJMU-A)

Transformer (T03)

Transformer (T02)

HWE09120 GB

- 55 -

[ III Outdoor Unit Components ]

CN332 Output 18VDC GND (Fan board)

LED2 Lit during normal CPU operation

Serial communication signal input GND

INV board

Output 17VDC

CN801 Pressure switch connection

CN4 GND Serial communication signal output

LEV driving output

LED1 Service LED

SWU1,2 Address switch

SW1-5 Dip

switch

Sensor input

CNVCC2 Output 12VDC Output 5VDC GND

CNIT Output 12VDC GND Output 5VDC Power supply detection input

Power supply ON/OFF signal output CNS2 Transmission line input/output for centralized control system (30VDC)

CN41 Power supply for centralized control OFF

CN40 Power supply for centralized control ON

CN102

Indoor/outdoor transmission line input/output (30VDC)

Power supply input for centralized control system (30VDC)

External signal input (contact input)

F01 Fuse 250V AC/3.15A

CNAC L1 L2

Actuator driving output

Output 12VDC Compressor ON/OFF output Error output

CN51

CNAC2 L1 L2

CNDC Bus voltage input P N

CN2

CN72 72C driving output (YJMU)

CN505 72C driving output (TJMU)

LED3 Lit when powered

[3] Outdoor Unit Circuit Board

1. Outdoor unit control board

HWE09120 GB

- 56 -

[ III Outdoor Unit Components ]

2. M-NET board

(TJMU only) F01 250V

3.15A

Grounding

CN03(TJMU only) Bus voltage input P N

CN04 Bus voltage input (YJMU only) Bus voltage output (TJMU only) P N

Grounding

CN102

Power supply output for centralized control system (30VDC) Indoor/outdoor transmission line input/output (30VDC)

Ground terminal for

TB3 Indoor/outdoor transmission block

transmission line

CNS2 Transmission line input/output for centralized control system (30VDC)

TB7 Terminal block for transmission line for centralized control

CNIT Input 12VDC GND Input 5VDC Power supply detection output Power supply ON/OFF signal input

LED1 Power supply for indoor transmission line

TP1,2 Check pins for indoor/outdoor transmission line

HWE09120 GB

- 57 -

[ III Outdoor Unit Components ]

3. INV board (1) PUHY-P72TJMU-A

SC-P1 Rectifier diode output (P)

C30,31,32 Smoothing capacitor

RSH1,2 Overcurrent detection resistor

CN6 Open: No-load operation setting Short-circuited: Normal setting

IGBT (Rear)

CN5V GND Output 5VDC

LED1 Lit: Inverter in normal operation Blink: Inverter error

CN4 GND

Serial communication signal output

CNDC Bus voltage output P N

(Fan Board)

CN2

S

erial communication signal output

SC-P2 Bus voltage Input(

TB-P(Note) Bus voltage output(P

P)

)

TB-N(Note) Bus voltage output

(N)

SC-T Input(L3)

CT3 Current sensor(

L3)

SC-S Input(L2)

CT12 Current sensor

SC-R Input(L1)

CT22 Current sensor

(U)

SC-U Inverter output(U)

GND Input 17VDC

SC-V Inverter output(V)

SC-W Inverter output(W)

(W)

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.

HWE09120 GB

- 58 -

[ III Outdoor Unit Components ]

CNCT2 AC sensor input

ACCT1 ACCT2

CNTH Thermistor input (THHS)

CNTYP Function setting connector input (Z26)

CNCT3 AC sensor input (ACCT3)

LED1 Inverter operation (Lit)/error (Blinking)

SW1

:Fixed to OFF

CN5V GND 5 VDC output

CN2 Serial communication signal output GND 17 VDC input

CN4 GND (FAN INV board) Serial communication signal input

LED3 Charging

CNFG Functional earth

F02 Fuse AC250V 3.15A

CNDC3 Bus voltage output

P N

CNDC2 Bus voltage input

CNDC1 Bus voltage output

SC-P1 Bus voltage input/output(P)

IPM-P Bus voltage output(P) (IPM input)

IPM-N Bus voltage input/output(N) (IPM input)

FT-N(Note) Bus voltage output(N)

CNCT DC sensor input (DCCT1)

LED4 Lit during normal CPU operation

1 2

34

2

1

5

7

1

2

1

3

6

ON:No-load operation setting OFF:Normal setting

P N

1

CNIPM ~ Power and signal outputs for driving the IPM

IPM error signal input (IPM output)

1

24

25

4

1

4

1

3

(2) PUHY-P96, P120, P144TJMU-A

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.

HWE09120 GB

- 59 -

[ III Outdoor Unit Components ]

SC-L1 Input(L1)

SC-L2 Input(L2)

SC-L3 Input(L3)

IGBT (Rear)

Bus voltage check terminal (P) Note

Bus voltage check terminal (N) Note 1

SC-P2 Bus voltage Input(P)

SC-P1 Rectifier diode output (P)

LED1 Lit: Inverter in normal operation Blink: Inverter error

CN6 Open: No-load operation setting Short-circuited: Normal setting

CN5V GND 5VDC output

RSH1 Overcurrent detection resistor

CN4 GND

(Fan Board) Serial communication signal output

CN2

S

erial communication signal output GND 17VDC input

SC-V Inverter output(V)

CNTYP Inverter board type

SC-W Inverter output(W)

SC-U Inverter output(U)

CT22 Current sensor(W)

CT12 Current sensor(U)

C30 C37 Smoothing capacitor

CN1 Bus voltage output N P

CT3 Current sensor(L3)

(3) PUHY-P72, P96, P120, P144YJMU-A

1) Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the voltage between FT-P and FT-N on INV Board has dropped to DC20V or less. (It takes about 10 minutes to discharge electricity after the power supply is turned off.)

HWE09120 GB

- 60 -

[ III Outdoor Unit Components ]

CNVDC Bus voltage input

N P

F01 Fuse 250VAC 15A

LED3 Lit during normal CPU operation

CN18V

Input 18VDC GND

CN4

GND Serial communication signal output GND（Control board） Serial communication signal output

CN22

GND（INV board） Input 5VDC

Serial communication signal input

GND（INV board） Input 17VDC

CN21

Serial communication signal output

GND（INV board） Input 17VDC

THBOX Thermistor (Control box internal temperature detection)

LED1 Inverter in normal operation

LED2 Inverter error

DIP IPM（Rear）

CNINV Inverter output

W V U

R630 Overcurrent detection resistor

4. Fan board

(1) PUHY-P72, P96, P120, P144TJMU-A

HWE09120 GB

- 61 -

[ III Outdoor Unit Components ]

(2) PUHY-P72, P96, P120, P144YJMU-A

CNVDC Bus voltage input N P

CNINV Inverter output W V U

R630,R631 Overcurrent detection resistor

DIP IPM Rear

CN18V Input 18VDC GND

LED3 Lit during normal CPU operation

CN4 GND Serial communication signal output

CN5

GND(Control board)

Serial communication signal output

CN21 Serial communication signal output GND(INV board) Input 17VDC

CN22 GND(INV board) Input 5VDC Serial communication signal input GND(INV board) Output 17VDC

THBOX Thermistor (Control box internal temperature detection)

LED1 Inverter in normal operation

LED2 Inverter error

HWE09120 GB

- 62 -

[ III Outdoor Unit Components ]

Grounding

TB21 Input/output（L1）

CN02 Output

L1 L2

TB22 Input/output（L2）

TB23 Input/output（L3）

CN01 Input

L3 L2 L1

F1 Fuse 250VAC 6.3A

F2 Fuse 250VAC 6.3A

5. Noise Filter

(1) PUHY-P72TJMU-A

HWE09120 GB

- 63 -

[ III Outdoor Unit Components ]

Grounding

F3 Fuse 250VAC 6.3A

R1,2 Rush current protection resistor

TB42 Bus voltage output（N）

TB31 Bus voltage output（P）

CN03 72C drive input

Electromagnetic relay

（72C）

Diode stack rectified voltage input (Diode stack output)

Output

（Diode stack input）

TB23 Input

（L3）

TB22 Input

（L2）

TB21 Input

（L1）

CN01 Input

L3 L2 L1

F2 Fuse 250VAC 6.3A

F1 Fuse 250VAC 6.3A

CN02 Output

L1 L2

(2) PUHY-P96, P120, P144TJMU-A

HWE09120 GB

- 64 -

[ III Outdoor Unit Components ]

CN4 Output (Rectified L2-L3 current) P N

CN5 Output (Rectified L2-L3 current) P N

TB21 Input/output(L1)

TB22 Input/output(L2)

TB23 Input/output(L3)

CN1B Input L3 L2

CN1A Input L1

Grounding

F1,F2,F3,F4 Fuse 250VAC 6.3A

CN6 Input L2 L3

Grounding

CN2 Surge absorber circuit Surge absorber circuit Short circuit Short circuit

(3) PUHY-P72, P96, P120, P144YJMU-A

HWE09120 GB

- 65 -

[ III Outdoor Unit Components ]

- 66 -

GBHWE09120

IV

Remote Controller

[1] Functions and Specifications of MA and ME Remote Controllers ................................... 69

[2] Group Settings and Interlock Settings via the ME Remote Controller .............................70

[3] Interlock Settings via the MA Remote Controller ............................................................. 74

[4] Using the built-in Temperature Sensor on the Remote Controller ................................... 75

HWE09120 GB

- 67 -

- 68 -

[ IV Remote Controller ]

MA remote controller

Outdoor unit

Indoor unit

M-NET transmission line (indoor/outdoor transmission line)

groupgroup

ME remote controller

Outdoor unit

Indoor unit

M-NET transmission line (indoor/outdoor transmission line)

groupgroup

IV Remote Controller

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

There are two types of remote controllers: ME remote controller, which is connected on the indoor-outdoor transmission line, and MA remote controller, which is connected to each indoor unit.

1. Comparison of functions and specifications between MA and ME remote controllers

Functions/specifications MA remote controller

*1*2

ME remote controller

*2

Remote controller address settings Not required Required

Indoor/outdoor unit address settings

Not required (required only by a system with one outdoor unit)

*3

Wiring method Non-polarized 2-core cable

Required

Non-polarized 2-core cable

To perform a group operation, daisy-

chain the indoor units using non-polarized 2-core cables.

Remote controller connection Connectable to any indoor unit in the

group

Interlock with the ventilation unit Each indoor unit can individually be in-

terlocked with a ventilation unit. (Set up via remote controller in the group.)

Changes to be made upon grouping change

MA remote controller wiring between indoor units requires rewiring.

Connectable anywhere on the indoor-outdoor transmission line

Each indoor unit can individually be interlocked with a ventilation unit. (Set up via remote controller.)

Either the indoor unit address and remote controller address must both be changed, or the registration information must be changed via MELANS.

*1. MA remote controller refers to MA remote controller (PAR-20MAU, PAR-21MAA), MA simple remote controller, and wire-

less remote controller.

*2. Either the MA remote controller or the ME remote controller can be connected when a group operation of units in a sys-

tem with multiple outdoor units is conducted or when a system controller is connected.

*3. Depending on the system configuration, some systems with one outdoor unit may require address settings.

2. Remote controller selection criteria

MA remote controller and ME remote controller have different functions and characteristics. Choose the one that better suits the requirements of a given system. Use the following criteria as a reference.

MA remote controller

*1*2

There is little likelihood of system expansion and group-

ing changes.

Grouping (floor plan) has been set at the time of instal-

lation.

ME remote controller

There is a likelihood of centralized installation of remote

controllers, system expansion, and grouping changes.

Grouping (floor plan) has not been set at the time of in-

stallation.

*1*2

To connect the remote controller directly to the OA pro-

cessing unit.

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

*2. A system controller must be connected to a system to which both MA remote controller and ME remote controller are con-

nected.

HWE09120 GB

- 69 -

[ IV Remote Controller ]

[Normal display]

(B) Interlock Settings (A) Group Settings

Indoor unit address display window

Interlocked unit address display window

Make the following settings to perform a group operation of units that are connected to different outdoor units or to manually set up the indoor/outdoor unit address.

(A) Group settings...........Registration of the indoor units to be controlled with the remote controller,

and search and deletion of registered information.

(B) Interlock settings........Registration of LOSSNAY units to be interlocked with the indoor units,

and search and deletion of registered information

[Operation Procedures]

(1) Address settings

Register the indoor unit to be controlled with the remote controller. Bring up either one of the following displays on the remote controller: The blinking display of HO, which appears when the power is turned on, or the normal display, which appears when the unit is stopped. The display window must look like one of the two figures below to proceed to the next step.

1

2

Bring up the Group Setting window.

-Press and hold buttons [FILTER] and [LOUVER] simultaneously for 2 seconds to bring up the display as shown below.

3

A

C

D

B

Select the unit address.

-

Select the address of the indoor unit to be registered by pressing

button

[SET TEMP. ( ) or ( )] to advance or go back

through the addresses.

Register the indoor unit whose address appears on the display.

- Press button [TEST] to register the indoor unit address

whose address appears on the display.

- If registration is successfully completed, unit type will appear on the display as shown in the figure below.

- If the selected address does not have a corresponding indoor unit, an error message will appear on the display. Check the address, and try again.

5

Unit type (Indoor unit in this case)

blinks to indicate a registration error. (Indicates that selected address does not have a corresponding unit.)

4

To register the addresses for multiple indoor units, repeat steps and above.

3

4

To search for an address, go to section (2) Address Search.

Next page.

To search for an address, go to section (2) Address Search.

Bring up the Interlock Setting window.

-Press button [MODE] to bring up the following display. Press again to go back to the Group Setting window as shown under step .

6

G

2

Both the indoor unit address and interlocked unit address will be displayed together.

Bring up the address of the indoor unit and the address of the LOSSNAY to be interlocked on the display.

- Select the address of the indoor unit to be registered by pressing button [SET TEMP. ( ) or ( )] to advance or go back through the addresses.

- Select the address of the LOSSNAY unit to be interlocked by pressing button [TIMER SET ( ) or ( )] to advance or go back through the interlocked unit addresses.

7

8

C

H

Make the settings to interlock LOSSNAY units with indoor units.

- Press button [TEST] while both the indoor unit address and the address of the LOSSNAY units to be interlocked are displayed to enter the interlock setting.

- Interlock setting can also be made by bringing up the LOSSNAY address in the indoor unit address display window and the indoor unit address in the interlocked unit address display window.

D

(Displayed alternately)

If registration is successfully completed, the two displays as shown on the left will appear alternately. If the registration fails, will blink on the display. (Indicates that the selected address does not have a corresponding unit.)

NOTE : Interlock all the indoor units in the group with the LOSSNAY units; otherwise, the LOSSNAY units will not operate.

[Blinking display of HO ]

ON/OFF

SET TEMP.

PAR-F27MEA-US

FILTER

CHECK

TEST

CLOCKONOFF

MODE TIMER

FAN SPEED

LOUVER

VENTILATION

AIR DIRECTION

TIMER SET

?

A

F

D

B

H

G

C

E

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

1. Group settings/interlock settings

HWE09120 GB

- 70 -

[ IV Remote Controller ]

(C) To return to the normal display When all the group settings and interlock settings are made, take the following step to go back to the normal display.

Press and hold buttons [FILTER] and [LOUVER] simultaneously for 2 seconds to go back to the window as shown in step .

(2) Address search

To search for the address of indoor units that have been entered into the remote controller, follow steps and .

(A) To search group settings

Unit type (Indoor unit in this case)

- When only one unit address is registered, the same address will remain on the display regardless of how many times the button is pressed.

- When the address of multiple units are registered (i.e. 011, 012, 013 ), they will be displayed one at a time in an ascending order with each pressing of button [TIMER ] .

To delete an address, go to section (3) Address Deletion.

To go back to the normal display, follow step

(Displayed alternately)

To delete an address, go to section (3) Address Deletion .

Bring up the address of another registered unit on the display.

- After completing step , a subsequent pressing of button [TIMER] will bring up the address of another registered unit. (The display method is the same as the one in step .)

Address of an interlocked LOSSNAY unit

Address of another interlocked unit

Bring up on the display the address of the LOSSNAY unit that was interlocked with the indoor unit in step .

- With each pressing of button [TIMER], the address of the LOSSNAY and indoor unit that is interlocked with it will be displayed alternately.

LOSSNAY can be searched in the same manner by bringing up the LOSSNAY address in the Interlocked unit address display window.

(B) Interlock setting search

After performing step , proceed as follows:

Bring up the address of the indoor unit to be searched on the display.

- Select the address of the indoor unit to be searched by pressing button [TIMER SET ( ) or ( )] to advance or go back through the interlocked addresses.

Repeat steps and in the previous page to interlock all the indoor units in a group with the LOSSNAY unit.

7

8

To go back to the normal display, follow step

To search for an address, go to section (2) Address Search.

(3) Address deletion

(Displayed alternately)

10

A

B

1

Bring up the Group Setting window.

- Each pressing of button [TIMER ] will bring up the address of a registered indoor unit and its unit type on the display.

11

E

1

2

E

10

E

13

12

14

12

6

E

H

9

10

The addresses of the indoor units that have been entered into the remote controller can be deleted by deleting the group settings. The interlock settings between units can be deleted by deleting the interlock settings. Follow the steps in section (2) Address Search to find the address to be deleted and perform deletion with the address being displayed in the display window. To delete an address, the address must first be bought up on the display.

Delete the registered indoor unit address or the interlock setting between units.

- Press button ? [CLOCK ON OFF] twice while either the indoor unit address or the address of the interlocked unit is displayed on the display to delete the interlock setting.

F

15

HWE09120 GB

- 71 -

[ IV Remote Controller ]

(A) To delete group settings

(B) To delete interlock settings

will be displayed in the room temperature display window.

- If a transmission error occurs, the selected setting will not be deleted, and the display will appear as shown below. In this case, repeat the steps above.

(Displayed alternately)

will be displayed in the room temperature display window.

(4) Making (A) Group settings and (B) Interlock settings of a group from any arbitrary remote controller

(A) Group settings and (B) Interlock settings of a group can be made from any arbitrary remote controller. Refer to (B) Interlock Settings under section 1 Group Settings/Interlock Settings for operation procedures. Set the address as shown below.

(A) To make group settings Interlocked unit address display window...Remote controller address

Indoor unit address display window...........The address of the indoor unit to be controlled with the remote controller

(B) To make interlock settings Interlocked unit address display window...LOSSNAY address

Indoor unit address display window..........The address of the indoor unit to be interlocked with the LOSSNAY

If deletion is successfully completed, will appear in the unit type display window. If the deletion fails, will appear in the unit type display window. In this case, repeat the steps above.

- -

To go back to the normal display, follow step .

10

PAR-F27MEA-US

ON/OFF

FILTER

FUN SPEED

LOUVER

VENTILATION

AIR DIRECTION

CHECK TEST

TIMER SET

MODE TIMER

CLOCK? ON? OFF

SET TEMP.

COOL

AUTO

HEAT

FAN SPEED

1

3

2

4

In the remote controller function selection mode, the settings for three types of functions can be made or changed as necessary.

3) Narrowed preset temperature range mode The default temperature ranges are 67°F to 87°F in the cooling/dry mode and 63°F to 83°F in the heating mode. By changing these ranges (raising the lower limit for the cooling/dry mode and lowering the upper limit for the heating mode), energy can be saved. *The settable range varies depending on the unit to be connected.

On the PAR-F27MEA-US model, automatic operation mode cannot be selected while the unit is in the narrowed preset temperature range mode. Only the lower limit can be set for cooling/dry mode, and upper limit for heating mode.

NOTE

[Function selection mode sequence on the remote controller]

Normal Display (Stopped unit)

1 1

3

2

3

2

3

2

3

2

[Normal display]

Operation mode display selection mode

Room temperature display selection mode

Narrowed preset temperature range mode (cooling/dry mode)

Narrowed preset temperature range mode (heating mode)

CENTRALLY CONTROLLED

DAILY

AUTO OFF

DRY

FAN

REMAINDER

ERROR CODE

CLOCK

SET TEMP.

AUTOONAUTO

OFF

FAN SPEED

CHECK MODE

FILTER

SENSOR

INSIDE

TEST RUN LIMIT TEMP.

1Hr.

NOT AVAILABLE

VENTILATION

STAND BY DEFROST

TIMER

CHECK

1

3

2

: Press and hold the [CHECK] and [MODE] buttons simultaneously for two seconds. : [SET TEMP.

( ) ]

button

: [SET TEMP.

( ) ]

button

2) Room temperature display selection mode (Display or non-display of room temperature) Although the suction temperature is normally displayed on the remote controller, the setting can be changed so that it will not appear on the remote controller.

1) Operation mode display selection mode (Display or non-display of COOL/HEAT during automatic operation mode) When the automatic operation mode is selected, the indoor unit will automatically perform a cooling or heating operation based on the room temperature. In this case, AUTO COOL or AUTO HEAT will appear on the remote controller display. This setting can be changed so that only AUTO will appear on the display.

Remote controller function selection mode

2. Remote controller function selection via the ME remote controller

HWE09120 GB

- 72 -

[ IV Remote Controller ]

1Hr.

NOT AVAILABLE

VENTILATION

STAND BY DEFROST

TIMER

CHECK

[Operation Procedures]

1. Press the [ON/OFF] button on the remote controller to bring the unit to a stop. The display will appear as shown in the previous page (Normal display).

2. Press buttons [CHECK] and [MODE] simultaneously for 2 seconds to go into the operation mode display selection mode under the remote controller function selection mode. Press button [SET TEMP. ( )] or [SET TEMP. ( )] to go into the other three modes under the remote controller function selection mode.

2

3

Operation mode display selection mode (Display or non-display of room temperature on the remote controller.)

AUTO COOL/HEAT will blink, and either ON or OFF will light up.

Press button [TIMER SET ( ) or ( )] in this

state to switch between ON and OFF.

When it is set to ON, AUTO and COOL or AUTO and HEAT will appear on the display during automatic operation mode. When it is set to OFF, only AUTO will appear on the display during automatic operation mode.

Room temperature display selection mode (Display or non-display of room temperature)

Narrowed preset temperature range mode (The range of preset temperature can be changed.)

When it is set to ON, the room temperature will stay in the operation display window during operation. When it is set to OFF, the room temperature will not appear in the operation display window during operation.

88 F will blink in the room temperature display window, and either ON or OFF will light up. Press button [TIMER SET ( ) or ( )] in this state to switch between ON and OFF.

1) Temperature range setting for the cooling/dry mode

COOL/DRY and LIMIT TEMP. will light up in the display window, and the temperature range for the cooling/dry mode will appear on the display. The lower limit temperature will be blinking in the preset temperature display window. While it is blinking, the temperature setting can be changed. [Selection range for the lower limit temperature] : 67 F 87 F (Medium temperature range indoor unit 57 F 87 F) (The upper limit temperature is fixed at 87 F

. Only the lower limit temperature is changeable.)

HEAT and LIMIT TEMP will light up, and the temperature range for the heating mode will appear on the screen. The upper limit temperature can be changed with button [TIMER SET ( ) or ( )]. [Selection range for the upper limit temperature] : 63 F 83 F (Medium temperature range indoor unit 63 F 83 F) (The lower limit temperature is fixed at 63 F

. Only the upper limit temperature is changeable.)

[When the temperature range for the cooling or dry mode is set to 67 F to 87 F]

[When the temperature range is changed to 75 F - 87 F]

2) Press button [TIMER SET ( ) or ( )] to set the lower limit temperature to the desired temperature.

3) After completing the step above, press button [SET TEMP. ( )] to go into the temperature range setting mode to set the temperature range for the heating operation.

3. When all the necessary settings have been made, exit the remote controller function selection mode and go back to the Normal display by pressing and holding buttons [CHECK] and [MODE] simultaneously for 2 seconds.

1

CENTRALLY CONTROLLED

DAILY

AUTO OFF

DRY COOL

AUTO FAN

HEAT

REMAINDER

ERROR CODE

CLOCK

SET TEMP.

AUTOONAUTO

OFF

FAN SPEED

CHECK MODE

FILTER

SENSAOR

INSIDE

TEST RUN LIMIT TEMP.

1Hr.

NOT AVAILABLE

VENTILATION

STAND BY DEFROST

TIMER

CHECK

CENTRALLY CONTROLLED

DAILY

AUTO OFF

DRY COOL

AUTO FAN

HEAT

REMAINDER

ERROR CODE

CLOCK

SET TEMP.

AUTOONAUTO

OFF

FAN SPEED

CHECK MODE

FILTER

SENSAOR

INSIDE

TEST RUN LIMIT TEMP.

1Hr.

NOT AVAILABLE

VENTILATION

STAND BY DEFROST

TIMER

CHECK

CENTRALLY CONTROLLED

DAILY

AUTO OFF

DRY COOL

AUTO FAN

HEAT

REMAINDER

ERROR CODE

CLOCK

SET TEMP.

AUTOONAUTO

OFF

FAN SPEED

CHECK MODE

FILTER

SENSAOR

INSIDE

TEST RUN LIMIT TEMP.

1Hr.

NOT AVAILABLE

VENTILATION

STAND BY DEFROST

TIMER

CHECK

CENTRALLY CONTROLLED

DAILY

AUTO OFF

DRY COOL

AUTO FAN

HEAT

REMAINDER

ERROR CODE

CLOCK

SET TEMP.

AUTOONAUTO

OFF

FAN SPEED

CHECK MODE

FILTER

SENSAOR

INSIDE

TEST RUN LIMIT TEMP.

1Hr.

NOT AVAILABLE

VENTILATION

STAND BY DEFROST

TIMER

CHECK

CENTRALLY CONTROLLED

DAILY

AUTO OFF

DRY COOL

AUTO FAN

HEAT

REMAINDER

ERROR CODE

CLOCK

SET TEMP.

AUTOONAUTO

OFF

FAN SPEED

CHECK MODE

FILTER

SENSAOR

INSIDE

TEST RUN

LIMIT TEMP.

1Hr.

NOT AVAILABLE

VENTILATION

STAND BY DEFROST

TIMER

CHECK

[TIMER SET ( ) (( ))] button

4

2

1

HWE09120 GB

- 73 -

[ IV Remote Controller ]

[Operation Procedures]

- Without interlocked LOSSNAY settings

Search result

- The indoor unit address and the interlocked LOSSNAY address will appear alternately.

Press the [ON/OFF] button on the remote controller to bring the unit to a stop. The display window on the remote controller must look like the figure below to proceed to step .

NOTE: When using LOSSNAY units in conjunction, interlock the addresses of all indoor units within the group and address of LOSSNAY units.

Perform this operation to enter the interlock setting between the LOSSNAY and the indoor units to which the remote controller is connected, or to search and delete registered information.

* When the upper controller is connected, make the setting using the upper controller.

In the following example, the address of the indoor unit is 05 and the address of the LOSSNAY unit is 30.

2

< 1. Registration Procedures >

Indoor unit address LOSSNAY address

Press the [TEST] button to register the address of the selected indoor unit and the interlocked LOSSNAY unit.

- Registration completed The registered indoor unit address and IC, and the interlocked LOSSNAY address and LC will appear alternately.

- Registration error If the registration fails, the indoor unit address and the LOSSNAY address will be displayed alternately.

Registration cannot be completed: The selected unit address does not have a corresponding indoor unit or a LOSSNAY unit. Registration cannot be completed: Another LOSSNAY has already been interlocked with the selected indoor unit.

1

3

2

Press and hold the [FILTER] and [ ] buttons simultaneously for two seconds to perform a search for the LOSSNAY that is interlocked with the indoor unit to which the remote controller is connected.

If no settings are necessary, exit the window by pressing and holding the [FILTER] and [ ] buttons simultaneously for 2 seconds. Go to step 1. Registration Procedures to make the interlock settings with LOSSNAY units, or go to step 2. Search Procedures to search for a particular LOSSNAY unit. Go to step 3. Deletion Procedures to delete any LOSSNAY settings.

To interlock an indoor unit with a LOSSNAY unit, press the [ TEMP. ( ) or ( )] button on the remote controller that is connected to the indoor unit, and select its address (01 to 50). Press the [ CLOCK ( ) or ( )] button to select the address of the LOSSNAY to be interlocked (01 to 50).

5

4

7

6

[3] Interlock Settings via the MA Remote Controller

1. LOSSNAY interlock setting (Make this setting only when necessary.)

(1) MA Remote Controller (PAR-21MAA)

HWE09120 GB

- 74 -

[ IV Remote Controller ]

- Search completed (No interlocked settings with a LOSSNAY exist.)

- The selected address does not have a corresponding indoor unit.

< 2. Search Procedures >

< 3. Deletion Procedures >

Press the [ MENU] button to search for the address of the LOSSNAY unit that is interlocked with the selected indoor unit.

- Search completed (With a LOSSNAY connection) The indoor unit address and IC, and the interlocked LOSSNAY address and LC will appear alternately.

Take the following steps to delete the interlock setting between a LOSSNAY unit and the interlocked indoor unit from the remote controller that is connected to the indoor unit. Find the address of the LOSSNAY to be deleted (See section 2. Search Procedures. ), and bring up the result of the search for both the indoor unit and LOSSNAY on the display.

Press the [ ON/OFF] button twice to delete the address of the LOSSNAY unit that is interlocked with the selected indoor unit.

- Registration completed The indoor unit address and , and the interlocked LOSSNAY address and will appear alternately.

-Deletion error If the deletion fails

8

9

10

11

To search for the LOSSNAY unit that is interlocked with a particular indoor unit, enter the address of the indoor unit into the remote controller that is connected to it.

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

1. Selecting the position of temperature detection (Factory setting: SW1-1 on the controller board on the indoor unit is set to OFF.)

To use the built-in sensor on the remote controller, set the SW1-1 on the controller board on the indoor unit to ON.

Some models of remote controllers are not equipped with a built-in temperature sensor. Use the built-in temperature sensor

on the indoor unit instead.

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

HWE09120 GB

- 75 -

[ IV Remote Controller ]

- 76 -

GBHWE09120

V

Electrical Wiring Diagram

[1] Electrical Wiring Diagram of the Outdoor Unit .................................................................79

[2] Electrical Wiring Diagram of Transmission Booster......................................................... 84

HWE09120 GB

- 77 -

- 78 -

HIC bypass,Controls refrigerant

flow in HIC circuit

G

Ground

G

Explanation

Symbol

1

SV5b

X05

3

6

CN506

163

X09

CN508

black

SV9

L3L2

L1

1

SV1a

For opening/closing the bypass

circuit

Subcooled liquid refrigerant

temperature

Terminal

block

Central control transmission

cable

Indoor/Outdoor transmission

cable

Power supply

Function setting connector

IGBT temperature

OA temperature

ACC inlet pipe temperature

Discharge pipe temperature

Thermistor

Pipe temperature

Outdoor unit heat exchanger

capacity control

4-way valve

Explanation

CN504

green

3

1

CH11

3

1

X03

CN503

blue

72C

2

1

X02

CN502

3

1

X01

CN02

Motor

(Compressor)

TB21

F2

AC250V

6.3A T

CN5V

yellow

CN22

red

31

Fan motor

(Heat exchanger)

U

21

CNT01

V

M

3㨪

W

21

CN18V

blue

CNDC

pink

CN4

12 45

123

4

CN21

blue

12345

CPU power

supply circuit

1

F01

AC250V

3.15A T

CN03

black

1313

6

2

M-NET power

supply

circuit

12

2

M-NET Board

*4

7

4

TH2

TH4

tࠑ

321

Indoor/Outdoor

transmission

cable

Central control

transmission

cable

63HS1

5

red

CNAC

63LS

3

TP2

2

CN2

1

Control Board

LEV1

LEV2

3

TH5

M

TP1

TH6

TH7MTH3

TB3

M1 M2 M1 M2 S

TB7

123

6

tࠑ

4512

1234

tࠑ

1

21S4b

tࠑ

2

FAN Board

LED1

Unit address setting

tࠑ

LED1㧦Power supply to

ޓIndoor/Outdoor

ޓtransmission line

CN102

CNS2

yellow

SWU2

10's digit

SWU1

1's digit

10

1

10

1

10

1

10

1

SW4 SW3 SW2 SW1

ON

OFF ON

OFF ON OFF ON

X04

*3

LED3:Lit when powered

CN01

red

5

black

3

CNINV

1

3

CNVDC

CNIT

red

F01

AC250V

15A T

1

R630

3

654

3

1

2

C630

IPM

2

1

2

1

LED3:CPU in

operation

1

LED1:Normal

operation

2

1

OFF

2323123

blue

CN3N

yellow

CN3K

F01

AC250V

3.15A T

4521

OFF

432112 431

21234

6

21

CNLVA

122131

CN801

yellow

CNT02

CN332

blue

CN4

21223

3123

CN41CN102CN3D

4

1

red

CN3S

red

CNIT

yellow

CNS2

CN202

red

CN201

CN215

black

CN211

4321

Power selecting

connector

2

1

Z24

Z25

3

CNLVB

red

ON

CNTYP5

green

CNTYP4

green

CN990

CN40

LED2㧦CPU in operation

CN212

CN213

red

TB1

L3L2

whitered

Noise Filter

F1

AC250V

6.3A T

W

CX6

CY3

V

black

SC-V

7

tࠑ

black

INV Board

RSH2

3

ZNR1

C32

red

black

CN6

SC-U

CN2

SC-T

MS

3㨪

*5

CX5

C1

U

CN4

black

red

white

U

72C

31

R30

TB23

TB22

1

CT22

DSA1

black

1

CX2

CY1

CX1

Z3

CX3

Z4

Z1

U

SC-P2

3

CY2

CX4

black

white

*5

red

CT12

black

SC-W

1

SC-S

red

CT3

SC-R

red

R1

DCL

2

5

C31

C1

RSH1

U

C30

IGBT

CNDC

pink

LED1:Normal operation(Lit)

/Error(Blink)

2

1

2

THHS

1

L

TB-P

443334

*5

131423

43

24

white

red

white

CN501

21S4a

㧗㧗㧗

TB-N

SC-P1

1

P

63H1

Power supply

3㨪

60Hz

208/230V

CN04

red

LED2:Error

UZ2U

ONOFF

1

10

SW5

12V

5

4

3

1

CN51

*3

Function setting

LED1

Display

setting

Compressor ON/OFF output

Error detection output

L1

㧗

Pressure

sensor

Pressure

switch

High pressure protection for the

outdoor unit

Discharge pressure

Low pressure

Magnetic relay(inverter main circuit)

Current sensor(AC)

Crankcase heater(for heating the compressor)

Linear

expansion

valve

DC reactor

SV9

TB1

TB3

TB7

TH3

TH4

TH5

TH6

TH7

THHS

Z24,25

21S4a

Symbol

63H1

63HS1

63LS

72C

CH11

CT12,22,3

LEV1

DCL

SV5b

Cooling/Heating switching

Heat exchanger capacity control

21S4b

TH2

Subcool bypass outlet

temperature

LEV2

Pressure control,Refrigerant flow

rate control

SV1a

Solenoid

valve

For opening/closing the bypass

circuit under the O/S

white

CNAC2

black

132

1

X72

CN505

black

A1

A2

Power

failure

detection

circuit

*1. Single-dotted lines indicate wiring

not supplied with the unit.

*2. Dot-dash lines indicate the control

box boundaries.

*3. Refer to the Data book for connecting

input/output signal connectors.

*4. Daisy-chain terminals (TB3) on the

outdoor units in the same refrigerant

system together.

*5. Faston terminals have a locking

function.Make sure the terminals

are securely locked in place after

insertion.Press the tab on the

terminals to remove them.

[ V Electrical Wiring Diagram ]

V Electrical Wiring Diagram

[1] Electrical Wiring Diagram of the Outdoor Unit

1. Electrical wiring diagram of the outdoor unit

(1) PUHY-P72TJMU-A

HWE09120 GB

- 79 -

[ V Electrical Wiring Diagram ]

LED1:Normal operation(Lit)

/Error(Blink)

LED4:CPU in

operation

ON

CN5V

yellow

3

1

OFF

SW1

6

1

Function

setting

HIC bypass,Controls refrigerant

flow in HIC circuit

G

Ground

G

Explanation

Symbol

DCCT1 Current sensor(DC)

21S4b

X01

1

CN502

X02

1

2

CN503

blue

X03

1

3

CH11

CN501

3

X04

21S4a

CN504

green

3

116

3

X05

CN506

SV5b

For opening/closing the bypass

circuit

Subcooled liquid refrigerant

temperature

Terminal

block

Central control transmission

cable

Indoor/Outdoor transmission

cable

Power supply

Function setting connector

IGBT temperature

OA temperature

ACC inlet pipe temperature

Discharge pipe temperature

Thermistor

Pipe temperature

CN04

red

4-way valve

LED2:CPU in operation

CN3D

2

CN40

ON

LED3:Lit when powered

2t°112

32132

1

CN202

red

121

63HS1

CN211

TH4

3

1

TH2

12234

1

2

1

TH5

t°

CN990

CN212

CN213

red

Z25

Z24

CNTYP4

green

CNLVB

red

1

13

red

CNIT

4

Explanation

CN03

black

yellow

CNS2

*3

3

2

OFF

1

2

red

CN3S

51232132

yellow

CN3K

1

2

33

3

4

F01

AC250V

3.15A T

LEV1

21 1

blue

CN3N

Pressure

sensor

M

LEV2

CNLVA

122

Pressure

switch

CN102

2

CN18V

blue

High pressure protection for the

outdoor unit

LED3:CPU in

operation

F01

AC250V

15A T

LED3:Charge

2

4

1

C630

W

IPM

72C

CN03

black

~~~

C41

black

DSA1

IPM

FAN Board

CY2

Z4

U

CY3

CY1

CX6

CX4

U

Z2

Z3

TB23

U

CX1

-

1

Discharge pressure

F3

AC250V

6.3A T

CNDC2

1

*5

INV Board

SC-P1

CN02

Z5

Noise

Filter

TB42

3

CNCT

31

R2R1

DCL

72C

red

+

Diode Stack

U

*4

U

CX3

ACCT3

CNTYP

1

3

CN505

black

LED1

Power

failure

detection

circuit

CNDC

pink

X72

5

1

CNT02

black

CNIPM

W

F02

AC250V

3.15A T

ACCT1

V

C008

CNDC1

N

P

C007

U

white

1

TB3

red

V

IPM power

supply

circuit

CN2

CNCT3

black

LED1:Normal

operation

CN4

Power supply

3~

60Hz

208/230V

11

CNDC3

pink

2

CNFG

blue

3

t°

Low pressure

SWU2

Central control

transmission

cable

4

t°

4

25

Indoor/Outdoor

transmission

cable

10's digit

1

CNIT

red

S

TP2

CNS2

yellow

12

TP1

2

Magnetic relay(inverter main circuit)

TB7

3

F01

AC250V

3.15A T

45

M-NET power

supply

circuit

12

1

CN102

black

Current sensor(AC)

M-NET Board

432

Crankcase heater(for heating the compressor)

3

4

CNINV

261

CNTYP5

green

2

4

CN4

3

2

3

Error detection output

1

CN215

black

CN201

63LS

t°

3

1

CN4

LED2:Error

TH6

CN41

CN21

blue

t°

THHS

Z26

4

black

3121

SWU1

2

1

CNTH

green

3

7

521

white

U

1

red

1's digit

CX2

3

Compressor ON/OFF output

SW5

M

3~

U

Control Board

23

3

41

CNAC

red

1

752

63H1

CN801

yellow

*3

2

t°

LED1

Display

setting

3

Function setting

CN51

12V

10

1

536

TH7

P

CN2

5

TH3

Unit address setting

1

CN332

blue

211131

12

432

4

2

1

Linear

expansion

valve

R630

2

1

CNVDC

2

Power selecting

connector

Fan motor

(Heat exchanger)

1

3

DC reactor

1

SV9

TB31

1

654

3

R01

2

CNCT2

blue

4

Motor

(Compressor)

TB1

C1

DCCT1

ACCT2

FT-N

TB3

TB7

Z1

TB21

TH3

TH4

TB22

L

F2

AC250V

6.3A T

1

F1

AC250V

6.3A T

5

blackwhitered

TH5

TH6

TH7

THHS3Z24,25,26

CN01

L3

L2

L1

TB1

W

CNAC2

black

*1.Single-dotted lines indicate wiring

not supplied with the unit.

*2.Dot-dash lines indicate the control

box boundaries.

*3.Refer to the Data book for connecting

input/output signal connectors.

*4.Daisy-chain terminals (TB3) on the

outdoor units in the same refrigerant

system together.

*5.Faston terminals have a locking

function.Make sure the terminals

are securely locked in place after

insertion.Press the tab on the

terminals to remove them.

L1

21S4a

Symbol

63H1

63HS1

63LS

72C

CH11

ACCT1,2,3

LEV1

DCL

Cooling/Heating switching

Heat exchanger capacity control

21S4b

TH2

Subcool bypass outlet

temperature

LEV2

Pressure control,Refrigerant flow

rate control

SV1a

Solenoid

valve

For opening/closing the bypass

circuit under the O/S

SW1

OFF

10

ON OFF

CNT01

CX5

ON

10

1

SW2

OFF

10

ON

1

SW3

OFF ON

10

1

SW4

OFF ON

4

1

LED1:Power supply to

Indoor/Outdoor

transmission line

4

2

1

V

red

MS

3~

CN22

red

124

6

163

SV9

CN508

black

X09

M1 M2 M1 M2

CPU power

supply circuit

Outdoor unit heat exchanger

capacity control

SV5b

SV1a

(2) PUHY-P96TJMU-A

HWE09120 GB

- 80 -

[ V Electrical Wiring Diagram ]

Contactor

Box

CNVDC

52F

Fan motor 2

(Heat exchanger)

Fan motor 1

(Heat exchanger)

CN12

black

white

red

black

white

red

642

1

black

white

red

TSR

W

V

U

A2

A1

LED1:Normal operation(Lit)

/Error(Blink)

TH3

TH7

TH6

TH5

TH2

TH4

52F Magnetic contactor(FAN)

Symbol

Explanation

For opening/closing the bypass

circuit under the O/S

Solenoid

valve

SV1a

Pressure control,Refrigerant flow

rate control

LEV2

Subcool bypass outlet

temperature

TH2

21S4b,c

Heat exchanger capacity control

Cooling/Heating switching

DCL

LEV1

ACCT1,2,3

CH11

72C

63LS

63HS1

63H1

Symbol

21S4a

Z24,25,26

THHS

TH7

TH6

TH5

TH4

TH3

TB1

DC reactor

Linear

expansion

valve

Crankcase heater(for heating the compressor)

Current sensor(AC)

Magnetic relay(inverter main circuit)

Low pressure

Discharge pressure

High pressure protection for the

outdoor unit

Pressure

switch

Pressure

sensor

Explanation

4-way valve

Pipe temperature

Thermistor

Discharge pipe temperature

ACC inlet pipe temperature

OA temperature

IGBT temperature

Function setting connector

Power supply

Terminal

block

Subcooled liquid refrigerant

temperature

Current sensor(DC)DCCT1

SV5b,c

Outdoor unit heat exchanger

capacity control

HIC bypass,Controls refrigerant

flow in HIC circuit

Indoor/Outdoor transmission cableTB3

Central control transmission cableTB7

For opening/closing the bypass circuitSV9

21S4b

X01

1

CN502

X02

1

2

CN503

blue

X03

1

3

CH11

CN501

3

X04

21S4a

CN504

green

3

116

3

X05

CN506

SV5b

635

1

SV5c

21S4c

CN507

red

X07

X08

CN04

red

LED2:CPU in operation

CN3D

2

CN40

ON

LED3:Lit when powered

2t°112

32132

1

CN202

red

121

63HS1

CN211

3

1122341

2

1

t°

CN990

CN212

CN213

red

Z25

Z24

CNTYP4

green

CNLVB

red

1

13

red

CNIT

4

CN03

black

yellow

CNS2

*3

3

2

OFF

1

2

red

CN3S

5123

2132

yellow

CN3K

1

2

3

4

F01

AC250V

3.15A T

LEV1

21 1

blue

CN3N

M

LEV2

CNLVA

122

CN102

2

CN18V

blue

LED3:CPU in

operation

F01

AC250V

15A T

LED3:Charge

2

4

1

C630

W

IPM

72C

CN03

black

~~~

C41

black

DSA1

IPM

FAN Board

CY2

Z4

U

CY3

CY1

CX6

CX4

U

Z2

Z3

TB23

U

CX1

-

1

F3

AC250V

6.3A T

CNDC2

1

*5

INV Board

SC-P1

CN02

Z5

Noise

Filter

TB42

3

CNCT

31

R2R1

DCL

72C

red

+

Diode Stack

U

*4

U

CX3

ACCT3

CNTYP

1

3

CN505

black

LED1

Power

failure

detection

circuit

CNDC

pink

X72

5

1

CNT02

black

CNIPM

F02

AC250V

3.15A T

ACCT1

V

C008

CNDC1

N

P

C007

U

white

1

TB3

red

IPM power

supply

circuit

CN2

CNCT3

black

LED1:Normal

operation

CN4

Power supply

3~

60Hz

208/230V

11

CNDC3

pink

2

CNFG

blue

3

t°

SWU2

Central control

transmission

cable

4

t°

4

25

Indoor/Outdoor

transmission

cable

10's digit

1

CNIT

red

S

TP2

CNS2

yellow

12

TP1

2

TB7

3

F01

AC250V

3.15A T

45

M-NET power

supply

circuit

12

1

CN102

black

M-NET Board

432

3

4

CNINV

261

CNTYP5

green

2

4

CN4

3

2

3

Error detection output

1

CN215

black

CN201

63LS

t°

3

1

CN4

LED2:Error

CN41

CN21

blue

t°

THHS

Z26

4

black

3121

SWU1

2

1

CNTH

green

3

7

521

white

U

1

red

1's digit

LED4:CPU in

operation

CX2

3

Compressor ON/OFF output

SW5

Control Board

23

3

41

CNAC

red

1

752

63H1

CN801

yellow

*3

2

t°

LED1

Display

setting

3

Function setting

CN51

12V

10

1

536

P

CN2

5

Unit address setting

1

CN332

blue

211131

12

432

4

2

1

R630

2

1

CN11

2

Power selecting

connector

1

3

1

TB31

1

654

3

R01

2

CNCT2

blue

4

Motor

(Compressor)

C1

DCCT1

ACCT2

FT-N

Z1

TB21 TB22

L

F2

AC250V

6.3A T

1

F1

AC250V

6.3A T

5

blackwhitered

3

CN01

L3

L2

L1

TB1

W

CNAC2

black

L1

SW1

OFF

10

ON OFF

CNT01

CX5

ON

10

1

SW2

OFF

10

ON

1

SW3

OFF ON

10

1

SW4

OFF ON

4

1

LED1:Power supply to

Indoor/Outdoor

transmission line

4

1

3

CN510

yellow

6

2

1

V

red

MS

3~

CN22

red

52F

1

Contactor Box

124

6

U

M

3~

V

W

642

1

163

SV9

CN508

black

X09

M1 M2 M1 M2

CPU power

supply circuit

1

5

X14

U

M

3~

V

W

CN5V

yellow

Function

setting

SW1

ONOFF

G

Ground

G

SV1a

*1.Single-dotted lines indicate wiring

not supplied with the unit.

*2.Dot-dash lines indicate the control

box boundaries.

*3.Refer to the Data book for connecting

input/output signal connectors.

*4.Daisy-chain terminals (TB3) on the

outdoor units in the same refrigerant

system together.

*5.Faston terminals have a locking

function.Make sure the terminals

are securely locked in place after

insertion.Press the tab on the

terminals to remove them.

(3) PUHY-P120, P144TJMU-A

HWE09120 GB

- 81 -

[ V Electrical Wiring Diagram ]

+-

+

2

1

+++++

Transformer Box

*1.Single-dotted lines indicate wiring not supplied with the unit.

*2.Dot-dash lines indicate the control box boundaries.

*3.Refer to the Data book for connecting input/output signal connectors.

*4.Daisy-chain terminals (TB3) on the outdoor units in the

same refrigerant system together.

*5.Faston terminals have a locking function.

Make sure the terminals are securely locked

in place after insertion. Press the tab

on the terminals to remove them.

*6.Control box houses high-voltage parts.

Before inspecting the inside of the

control box,turn off the power,keep

the unit off for at least 10 minutes,

and confirm that the voltage between

FT-P and FT-N on INV Board has dropped

to DC20V or less.

HIC bypass,Controls refrigerant

flow in HIC circuit

Ground

G

GG

L3

L1

L2

Power Source

3~

60Hz

460V

T02

(Transformer)

CNTR2

432

1

2

3

4

T03

(Transformer)

CNTR3

21S4b

CN501

X01

1

3

X09

3

6

CN508

black

Unit address

setting

CN504

green

CT12

C31

C33

CN5

red

D1

R5

Z5

1

SV9

CNTR1

12

L1L2 L2

3

L3

45678

R631

white

TH2

t°

white

red

black

white

red

F4

AC600V

3A F

C8

F5

AC600V

3A F

red

CNIT

yellow

CNS2

t°

1

LED1

Display

setting

CN51

12V

Function

setting

SW1

10

1

CN212

CNTYP4

green

F4

AC250V

6.3A T

R4

F3

F1

Z4

R2

F2

*3

3

2

Compressor ON/OFF output

Error detection output

CN201

Z25

1

4

1

TH3

Z3

3

Z2

U

ONOFF

SW2

10

1

SWU2

LED1

C4

C35

C37

R31

R33

R30

ON

SW3

10

Control Board

TH7

CN40

63HS1

CN41

TH6

t°

TH4

3

2

1

SW5

LED3:Lit when powered

1

3

4

R32

2

Z1

1

DSA

C10

R34 R35

LEV1

LEV2

C36

3

C34

SC-V

CT22

SC-U

V

1

CN4

blue

red

1

M

1

t°

LED3:CPU in

operation

black

4

1

CNTYP2

black

3

6

yellow

CN3K

*3

3

M

C3

TB21

C1

R3

3

CN1A

5

U

CN2

blue

CN3N

5

6

C7

U

44

R1

CN21

blue

TB1

1

CN1B

3

TB7 Power

selecting

connector

CN102

CNVDC

3

2

1

IPM

2

21

U

4

TP1

W

L3

DCL

V

black

72C

white

red

3

21

ON

OFF

12

M-NET power

supply circuit

123

C6

M-NET Board

12

1

Power failure

detection circuit

1

CNAC2

black

CN502

5

Indoor/Outdoor

transmission

cable

INV Board

red

3

CNT01

TB23

L2L1

U

4

1

ON

1

2

1's

digit

THHS

1

CNIT

red

S

2

1

CN990

1

3

W

TB3

10's

digit

OFF

LED2:CPU in operation

5

2

CNS2

yellow

TB7

1

CNDC

pink

M1

2

red

6

MS

3~

1

t°

C100

*5

3

U

1

4

LED1:Power supply to

Indoor/Outdoor

transmission line

ZNR01

M2

32

M1

black

Central control

transmission

cable

*6

SC-L1

1

4

C2

C9

ON

C5

OFF

FT-N

R5

M

3~

Motor

(Compressor)

CN5V

yellow

5

2

3

red

CN3S

1

CN04

red

1

CN2

2

3

CN4

X05

2

Fan motor

(Heat exchanger)

SC-P2

P

1

CN211

CN202

red

TH5

N

CN1

M2

2

TP2

LED1:Normal operation(Lit)

/ Error(Blink)

2

CN503

blue

5

X04

4

*4

SC-W

U

C32

SC-L3

CH11

CN506

1

2

CN72

red

3

P

63H1

CN801

yellow

1

2

CN332

blue

F1,F2,F3

AC250V

6.3A T

21

OFF

SW4

10

1

CNT02

11

CN3D

432

1

21

CPU power

supply circuit

CNAC

red

2

1

F01

AC250V

3.15A T

1

t°

ONOFF

10

SWU1

white

CN213

red

SC-L2

3

Z24

7

4

3 21122

7

1

2

CN5

1

CN4

red

CNINV

3

4

R630

1

C630

3

CN22

red

C631

5

F01

DC700V

4A T

1

CNTYP5

green

4

LED2:Error

21S4a

1

LED1:Normal

operation

2

3

2

U

X02

X03

CN18V

blue

5

1

7

CN4

3

CN6

2

IPM

4

SC-P1

FT-P

black

C30

red

DB1

CT3

72C

C1

CN2

CNTYP

black

R1

black

TB22

6

3

RSH1

CN102

3

R6

C17

1

FAN Board

63LS

ZNR1

U

L

3

Noise

Filter

SV5b

3

1

CN6

yellow

red

CNLVA

CNLVB

red

12345

6

white

black

SV1a

6

432

1

2

1

L1

L2 L3

CN215

black

For opening/closing the bypass

circuit

Terminal

block

Central control transmission

cable

Indoor/Outdoor transmission

cable

Power supply

Function setting connector

IGBT temperature

OA temperature

ACC inlet pipe temperature

Discharge pipe temperature

Thermistor

SV9

TB1

TB3

TB7

TH3

TH4

TH5

TH6

TH7

THHS

Z24,25

TH2

Subcool bypass outlet

temperature

DC reactor

Linear

expansion

valve

Crankcase heater(for heating the compressor)

Current sensor(AC)

Magnetic relay(inverter main circuit)

Low pressure

Discharge pressure

High pressure protection for the

outdoor unit

Pressure

switch

Cooling/Heating switching

Pressure

sensor

Explanation

4-way valve

Heat exchanger capacity control

For opening/closing the bypass

circuit under the O/S

Solenoid

valve

Pressure control,Refrigerant flow

rate control

DCL

LEV1

CT12,22,3

CH11

21S4b

72C

63LS

63HS1

63H1

Symbol

21S4a

LEV2

SV1a

SV5b

Outdoor unit heat exchanger

capacity control

Pipe temperature

Subcooled liquid refrigerant

temperature

(4) PUHY-P72, P96YJMU-A

HWE09120 GB

- 82 -

[ V Electrical Wiring Diagram ]

+-

++++

2

1

+

++

Contactor

Box

W

V

CN11

1

black

2

8

7

5

red

white

8

M

3~

U

2

CN12

52F

TSR

black

white

red

black

white

red

W

V

U

V

W

5

1

7

A2

A1

Transformer Box

CNTR3

T03

(Transformer)

432

1

2

3

4

CNTR2

T02

(Transformer)

*1.Single-dotted lines indicate wiring not supplied with the unit.

*2.Dot-dash lines indicate the control box boundaries.

*3.Refer to the Data book for connecting input/output signal connectors.

*4.Daisy-chain terminals (TB3) on the outdoor units in the

same refrigerant system together.

*5.Faston terminals have a locking function.

Make sure the terminals are securely locked

in place after insertion. Press the tab

on the terminals to remove them.

*6.Control box houses high-voltage parts.

Before inspecting the inside of the

control box,turn off the power,keep

the unit off for at least 10 minutes,

and confirm that the voltage between

FT-P and FT-N on INV Board has dropped

to DC20V or less.

Magnetic contactor(FAN)52F

L3

L1

L2

Power Source3~60Hz

460V

Contactor Box

Fan motor 1

(Heat exchanger)

1

21S4b

21S4c

CN501

X01

1

3

X09

3

6

CN508

black

Unit address

setting

CN504

green

CT12

C31

C33

CN5

red

D1

R5

Z5

1

SV9

CNTR1

12

L1L2 L2

3

L3

45678

R631

white

TH2

t°

white

red

black

white

red

F4

AC600V

3A F

C8

F5

AC600V

3A F

red

CNIT

yellow

CNS2

t°

1

LED1

Display

setting

CN51

12V

Function

setting

SW1

10

1

CN212

CNTYP4

green

F4

AC250V

6.3A T

R4

F3

F1

Z4

R2

F2

*3

3

2

Compressor ON/OFF output

Error detection output

CN201

Z25

1

4

1

TH3

Z3

3

Z2

U

ONOFF

SW2

10

1

SWU2

LED1

C4

C35

C37

R31

R33

R30

ON

SW3

10

Control Board

TH7

CN40

63HS1

CN41

TH6

t°

TH4

3

2

1

SW5

LED3:Lit when powered

1

3

4

R32

2

Z1

1

DSA

C10

R34 R35

LEV1

LEV2

C36

3

C34

SC-V

CT22

SC-U

V

1

CN4

blue

red

1

M

1

t°

LED3:CPU in

operation

black

4

1

CNTYP2

black

3

6

yellow

CN3K

*3

3

M

C3

TB21

C1

R3

3

CN1A

5

U

CN2

blue

CN3N

5

6

C7

U

44

R1

CN21

blue

TB1

1

CN1B

3

TB7 Power

selecting

connector

CN102

CNVDC

3

2

1

IPM

2

21

U

4

TP1

L3

DCL

black

72C

white

red

3

21

ON

OFF

12

M-NET power

supply circuit

123

C6

M-NET Board

12

1

Power failure

detection circuit

1

CNAC2

black

CN502

5

Indoor/Outdoor

transmission

cable

INV Board

red

3

CNT01

TB23

L2L1

Fan motor 2

(Heat exchanger)

4

1

ON

1

2

1's

digit

THHS

1

CNIT

red

S

2

1

CN990

1

3

W

TB3

10's

digit

OFF

LED2:CPU in operation

5

2

CNS2

yellow

TB7

1

CNDC

pink

M1

2

red

6

MS

3~

1

t°

C100

*5

3

U

1

4

LED1:Power supply to

Indoor/Outdoor

transmission line

ZNR01

M2

32

M1

black

Central control

transmission

cable

*6

SC-L1

1

4

C2

C9

ON

C5

OFF

FT-N

R5

M

3~

Motor

(Compressor)

CN5V

yellow

5

2

3

red

CN3S

1

CN04

red

1

CN2

2

3

CN4

X05

2

SC-P2

P

1

CN211

CN202

red

TH5

N

CN1

M2

2

TP2

LED1:Normal operation(Lit)

/ Error(Blink)

2

CN503

blue

5

X04

4

*4

SC-W

U

C32

SC-L3

CH11

CN506

1

2

CN72

red

3

P

63H1

CN801

yellow

1

2

CN332

blue

F1,F2,F3

AC250V

6.3A T

21

OFF

SW4

10

1

CNT02

11

CN3D

432

1

21

CPU power

supply circuit

CNAC

red

2

1

F01

AC250V

3.15A T

1

t°

CN507

red

ONOFF

10

SWU1

white

CN213

red

SC-L2

3

Z24

7

4

3 21122

7

1

2

CN5

1

CN4

red

CNINV

3

4

R630

1

C630

3

CN22

red

C631

5

F01

DC700V

4A T

1

CNTYP5

green

4

LED2:Error

21S4a

1

LED1:Normal

operation

2

3

2

U

X02

X03

CN18V

blue

5

1

7

CN4

3

CN6

2

IPM

4

SC-P1

FT-P

black

C30

red

DB1

CT3

72C

C1

CN2

CNTYP

black

R1

black

TB22

6

3

RSH1

CN102

3

R6

C17

1

FAN Board

63LS

ZNR1

U

L

3

Noise

Filter

SV5b

X08

3

1

CN6

yellow

red

SV5c

X07

356

6

5

X14

CN510

yellow

1

CNLVA

CNLVB

red

12345

6

white

black

SV1a

52F

G

Ground

6

432

1

G

2

1

L1 L2 L3

CN215

black

HIC bypass,Controls refrigerant

flow in HIC circuit

For opening/closing the bypass

circuit

Terminal

block

Central control transmission

cable

Indoor/Outdoor transmission

cable

Power supply

Function setting connector

IGBT temperature

OA temperature

ACC inlet pipe temperature

Discharge pipe temperature

Thermistor

SV9

TB1

TB3

TB7

TH3

TH4

TH5

TH6

TH7

THHS

Z24,25

TH2

Subcool bypass outlet

temperature

DC reactor

Linear

expansion

valve

Crankcase heater(for heating the compressor)

Current sensor(AC)

Magnetic relay(inverter main circuit)

Low pressure

Discharge pressure

High pressure protection for the

outdoor unit

Pressure

switch

Cooling/Heating switching

Pressure

sensor

Explanation

4-way valve

Heat exchanger capacity control

For opening/closing the bypass

circuit under the O/S

Solenoid

valve

Pressure control,Refrigerant flow

rate control

DCL

LEV1

CT12,22,3

CH11

21S4b,c

72C

63LS

63HS1

63H1

Symbol

21S4a

LEV2

SV1a

SV5b,c

Outdoor unit heat exchanger

capacity control

Pipe temperature

Subcooled liquid refrigerant

temperature

(5) PUHY-P120, P144YJMU-A

HWE09120 GB

- 83 -

[ V Electrical Wiring Diagram ]

AC208V/230V

L

Red

Red Red

White

Green

250V 2A

Grounding

Red Red

Red

U

White

White White

White

White BlueRedRed

DSA

White

Blue

Red

Varistor

Noise filter

Stabilized power supply

4

3

2

1

2

3

CN2

CN1

Black

Green/Yellow

1

2

3

E

4

Choke coil

12

CN3

1212

CN4

CN2

1

2

CN1

Electronic control board

Black

White

Red

Black

S

B

A

S

B

A

Terminal block 2 for transmission line (TB3) Expanded (indoor unit) side

Terminal block 1 for transmission line (TB2) Expanded (outdoor unit) side

Terminal block for power supply (TB1)

[2] Electrical Wiring Diagram of Transmission Booster

HWE09120 GB

- 84 -

VI

Refrigerant Circuit

[1] Refrigerant Circuit Diagram ............................................................................................. 87

[2] Principal Parts and Functions .......................................................................................... 88

HWE09120 GB

- 85 -

- 86 -

[ VI Refrigerant Circuit ]

HEX

O/S

Comp

ACC

CP2SV9

BV1

BV2

ST2

ST1

LEV2

CV

SV5b

63LS

CJ1

CP1

TH5

21S4b

TH6

TH7

TH3

TH2

TH4

CJ2

ST7

63HS1

ST6

ST3

21S4a

63H1

SV1a

LEV1

SCC

CV

TH7

HEX2

HEX1

TH3

SV5c

SV5b

21S4a

21S4c

21S4b

CJ2

TH2

SV9 CP2

63H1

ST3

63HS1

CJ1

O/S

TH4

Comp

ACC

ST6

ST7

SV1a

CP1

TH5

63LS

BV1

ST1

SCC

LEV1

TH6

LEV2

ST2

BV2

VI Refrigerant Circuit

[1] Refrigerant Circuit Diagram

1. Outdoor unit

(1) PUHY-P72, P96 models

(2) PUHY-P120, P144 models

HWE09120 GB

- 87 -

[ VI Refrigerant Circuit ]

Pressure 0~4.15 MPa [601psi] Vout 0.5~3.5V

0.071V/0.098 MPa [14psi] 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)

Connector

63HS1

1

123

2 3

[2] Principal Parts and Functions

1. Outdoor unit

Part

name

Compressor

High pressure sensor

Low pressure sensor

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

P72 model Low-pressure shell scroll compressor Wirewound resistance 20°C[68°F] :

0.2ohm(TJMU)

0.71ohm(YJMU) P96,P120,P144 models

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

0.092ohm(TJMU)

0.323ohm(YJMU)

Pressure

63LS

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

123

0.173V/0.098 MPa [14psi]

Connector

Pressure [MPa] =0.566 x Vout [V] - 0.283 Pressure [psi] =(0.566 x Vout [V] - 0.283) x 145

1

GND (Black)

2

Vout (White)

3

Vcc (DC5V) (Red)

Pressure switch

Power supply transformer

63H1 1) Detects high pressure

2) Provides high-pressure protection

Trans former YJMU

only

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

4.15MPa[601psi] OFF setting

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

Electromagnetic contactor

52F P120

and P144 only

Turns ON and OFF the output to the fan motor.

AC208-230V Refer to the

section on troubleshooting the outdoor unit fan (page 243) for the ON/OFF pattern of the electromagnetic contactors.

HWE09120 GB

- 88 -

[ VI Refrigerant Circuit ]

R = 7.465k

120

R = 4057 R =

7.465

25/120

t

4057

273 t

1

393

1

exp

R = 15k

0

R = 3460 R = 15

0/80

t

3460

273 t

1

273

1

exp

R = 17k

50

R = 4016 R = 17

25/120

t

4016

273 t

1

323

1

exp

Part

name

Thermistor

Symbols

(functions)

TH4 (Discharge)

Notes

Usage Specifications Check method

1) Detects discharge air temperature

Degrees Celsius Resistance

check

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

TH2 LEV 1 is controlled based on the

TH2, TH3, and TH6 values.

TH3 (Pipe temperature)

1) Controls frequency

2) Controls defrosting during heating operation

3) Detects subcool at the heat exchanger outlet and controls LEV1 based on HPS data and TH3 data

TH7 (Outdoor temperature)

1) Detects outdoor air temperature

2) Controls fan operation

Degrees Celsius

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

Resistance check

TH5 LEV2 is controlled based on the

63LS and TH5 values.

TH6 Controls LEV1 based on TH2,

TH3, and TH6 data.

THHS Inverter

Controls inverter cooling fan based on THHS temperature

Degrees Celsius

heat sink temperature

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 Discharge-suction 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

Continuity check with a tester

2) High-pressure-rise prevention

SV5b Heat

Controls outdoor unit heat ex-

changer capacity exchanger capacity control

SV5c For controlling heat exchanger capacity

P120, P144 moels only

SV9 High-pressure-rise prevention Open while being powered/

closed while not being powered

HWE09120 GB

- 89 -

[ VI Refrigerant Circuit ]

Part

name

Linear expansion

Symbols

(functions)

LEV1 (SC control)

Notes Usage Specifications Check method

Adjusts the amount of bypass flow

from the liquid pipe on the outdoor

unit during cooling

valve

LEV2 (Refrigerant

Adjusts refrigerant flow during

heating flow adjustment)

Heater CH11 Heats the refrigerant in the com-

pressor

4-way valve

21S4a Changeover between heating and

cooling

21S4b 1) Changeover betwee n heating

21S4c P120,

P144 moels

and cooling

2) Controls outdoor unit heat exchanger capacity

only

Fan motor

FAN motor 1,2 FAN

motor 2 is only on the P120

Regulates the heat exchanger capacity by adjusting the operating frequency and operating the propeller fan based on the operating

pressure. and P144 models.

DC12V Opening of a valve driven by a stepping motor 0-480 pulses (direct driven type)

DC12V Opening of a valve driven by a stepping motor 2100 pulses (Max. 3000 pulses)

Belt heater P72 model 1511 ohm 35W (AC230V) P96, P120, and P144 models 1280 ohm 45W (AC240V)

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

AC208-230V Dead: cooling cycle Outdoor unit heat exchanger capacity at 100% Live: heating cycle Outdoor unit heat exchanger capacity at 50% or heating cycle

(TJMU) AC180V, 50.5Hz, 920W (YJMU) AC414V, 50.5Hz, 920W

Same as indoor LEV The resistance value differs from that of the indoor LEV. (Refer to the section "LEV Troubleshooti ng.")(page 24

5)

Same as indoor LEV

Resistance check

Continuity check with a tester

HWE09120 GB

- 90 -

[ VI Refrigerant Circuit ]

1

273+t

R0=15k R

0/80

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

1

273

2. 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

LEV control during cooling operation (superheat detection)

temperature)

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-(1400) pulses

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

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

M

Brown Blue

Resistance check

HWE09120 GB

- 91 -

Mitsubishi P120, P144TYJMU-A, P216, P240, P264 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual