ManualsPro Mitsubishi Electric MITSUBISHI ELECTRIC PURY-P-TNU-A Air Conditioners For Building Out Door Unit Instruction Manual

MITSUBISHI ELECTRIC PURY-P-TNU-A Air Conditioners For Building Out Door Unit Instruction Manual

May 15, 2024
Mitsubishi Electric

MITSUBISHI-ELECTRIC-logo

MITSUBISHI ELECTRIC PURY-P-TNU-A Air Conditioners For Building Out Door

Unit

MITSUBISHI-ELECTRIC-PURY-P-TNU-A-Air-Conditioners-For-Building-Out-Door- Unit-image

Product Information

  • Model: PURY-P-TNU-A (-BS), PURY-P-YNU-A (-BS), PURY-EP-TNU-A (-BS), PURY-EP-YNU-A (-BS)
  • For use with: R410A

Specifications

  • For building application outdoor unit
  • Installation manual included for safe and correct use
  • Ensure all refrigerant piping work, electrical work, air-tightness test, and brazing work are performed by qualified personnel

Product Usage Instructions

Safety Precautions

Read and observe the safety precautions below and the instructions provided on the labels affixed to the unit. Retain this manual for future reference and ensure it is passed on to end users.

1. General Precautions

  • Do not use any refrigerant other than the type indicated in the manuals and on the nameplate to avoid malfunctions, accidents, or legal violations.
  • Avoid using the unit in environments with oil, steam, corrosive gases, or chemical sprays to prevent performance reduction or damage.
  • Do not change safety or protection device settings to avoid potential risks of bursting, fire, or explosion.
  • Avoid altering or modifying the unit to prevent refrigerant leakage, water leakage, injury, shock, or fire.
  • Avoid wetting electrical parts or touching them with wet fingers to prevent current leakage, shock, malfunction, or fire.
  • Avoid touching refrigerant pipes or electrical parts with bare hands during and after operation to prevent burns or frostbite.

Frequently Asked Questions

  • Q: Can I install the unit myself?
    • A: To ensure safety and proper installation, it is recommended to have all refrigerant piping work, electrical work, air-tightness test, and brazing work done by qualified personnel.
  • Q: What type of refrigerant should I use?
    • A: Only use the type of refrigerant indicated in the manuals for the unit and on the nameplate. The use of incorrect refrigerant may lead to malfunctions, accidents, or legal violations.
  • Q: Is it safe to change the settings of safety devices?
    • A: It is not recommended to change the settings of safety devices as it may lead to potential risks of bursting, fire, or explosion. Operating the unit with altered safety device settings can be dangerous.
  • Q: What should I do if I accidentally touch electrical parts with wet fingers?
    • A: If you accidentally touch electrical parts with wet fingers, immediately dry your hands and ensure the unit is turned off before attempting any further actions to prevent electric shock or malfunction.

“`

Air-Conditioners For Building Application OUTDOOR UNIT
PURY-P-TNU-A (-BS) PURY-P-YNU-A (-BS) PURY-EP-TNU-A (-BS) PURY-EP-YNU-A (-BS)

For use with R410A

INSTALLATION MANUAL
For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner unit.
MANUEL D’INSTALLATION
Veuillez lire le manuel d’installation en entier avant d’installer ce climatiseur pour éviter tout accident et vous assurer d’une utilisation correcte.
MANUAL DE INSTALACIÓN
Para un uso seguro y correcto, lea detalladamente este manual de instalación antes de montar la unidad de aire acondicionado.

Safety precautions

Read and observe the safety precautions below and the instructions provided on the labels affixed to the unit.
Retain this manual for future reference. Make sure that this manual is passed on to the end users. All refrigerant piping work, electrical work, air- tightness test, and brazing work must be performed by
qualified personnel. Incorrect use may result in serious injury.
: indicates a hazardous situation which, if not avoided, could result in death or serious injury.
: indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
: addresses practices not related to personal injury, such as product and/or property damage.
1-1. General precautions

Do not use any refrigerant other than the type indicated in the manuals for the unit and on the nameplate. – Doing so will cause the unit or pipes to burst, or result in an explosion or fire during use, during repairs, or at the
time of disposal of the unit. – It may also be in violation of applicable laws. – MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for malfunctions or accidents resulting from
the use of the wrong type of refrigerant.
Do not use the unit in an unusual environment. – If the unit is used in areas exposed to large amounts of oil, steam, organic solvents, or corrosive gases (such as
ammonia, sulfuric compounds, or acids), or areas where acidic/alkaline solutions or special chemical sprays are used frequently, it may significantly reduce the performance and corrode the internal parts, resulting in refrigerant leakage, water leakage, injury, electric shock, malfunction, smoke, or fire.
Do not change the settings of the safety or protection devices. – Forcing the unit to operate by disabling the safety devices, such as the pressure switch or the thermal switch, may
result in bursting, fire, or explosion. – Operating the unit with a safety device whose settings have been changed may result in bursting, fire, or explosion. – Using safety devices other than those specified by Mitsubishi Electric may result in bursting, fire, or explosion.
Do not alter or modify the unit. – Doing so will result in refrigerant leakage, water leakage, serious injury, electric shock, or fire.
Do not wet the electrical parts. – Doing so may result in current leakage, electric shock, malfunction, or fire.
Do not touch the electrical parts, switches, or buttons with wet fingers. – Doing so may result in electric shock, malfunction, or fire.
Do not touch the refrigerant pipes and refrigerant line components with bare hands during and immediately after operation. – The refrigerant in the pipes will be very hot or very cold, resulting in frostbite or burns.
Do not touch the electrical parts with bare hands during and immediately after operation. – Doing so may result in burns.
Ventilate the room while servicing the unit. – If the refrigerant leaks, oxygen deficiency may result. If the leaked refrigerant comes in contact with a heat source,
toxic gas will be generated.

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If you notice any abnormality (e.g., a burning smell), stop the operation, turn off the power switch, and consult your dealer. – Continuing the operation may result in electric shock, malfunction, or fire. Properly install all required covers and panels on the terminal box and the control box. – If dust or water enters the unit, this may result in electric shock or fire. Periodically check the unit base for damage. – If the damage is left uncorrected, the unit will fall and cause serious injury. Consult your dealer for the proper disposal of the unit. – The refrigerant oil and the refrigerant in the unit will pose a risk of environmental pollution, fire, or explosion. 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, or fire.
Children should be supervised to ensure that they do not play with the appliance. Do not operate the unit with the panels and guards removed. – Rotating, hot, or high-voltage parts may cause injury, electric shock, or fire. Do not touch fans, heat exchanger fins, or the sharp edges of components with bare hands. – Doing so may result in injury. Wear protective gloves when working on the unit. – Failure to do so may result in injury. – High-pressure pipes poses a risk of burns if touched with bare hands while the unit is in operation.
1-2. Precautions for transporting the unit
When lifting the unit, pass the slings through the four designated sling holes. – Improper lifting will cause the unit to topple or fall, resulting in serious injury.
Do not lift the unit with the PP bands that are used on some products. – Doing so may result in injury. Observe the restrictions on the maximum weight that a person can lift, which is specified in local regulations. – Failure to do so may result in injury.
1-3. Precautions for unit installation
Do not install the unit where combustible gas may leak. – If combustible gas accumulates around the unit, fire or explosion may result. Do not allow children to play with the packing materials. – Suffocation or serious injury may result. Cut up the packing materials before disposal. All installation work must be performed by qualified personnel in accordance with this manual. – Improper installation may result in refrigerant leakage, water leakage, serious injury, electric shock, or fire.

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If the air conditioner is installed in a small room, take measures to prevent the refrigerant concentration from exceeding the safety limit in the event of refrigerant leakage. – Consult your dealer regarding the appropriate measures to prevent the allowable concentration from being
exceeded. If the refrigerant leaks and the allowable concentration is exceeded, hazards due to a lack of oxygen in the room will result.
Install the unit in accordance with the instructions to minimize the risk of damage from earthquakes and strong winds. – Improper installation will cause the unit to topple, resulting in serious injury.
The unit must be securely installed on a structure that can sustain its weight. – Failure to do so will cause the unit to fall, resulting in serious injury.

Seal all openings around pipes and wires to keep out small animals, rainwater, or snow. – Failure to do so may result in current leakage, electric shock, or damage to the unit.
1-4. Precautions for piping work

Before heating the brazed sections, remove the gas and oil that are trapped in the pipes. – Failure to do so may generate fire, resulting in serious injury.
Do not purge the air using refrigerant. Use a vacuum pump to evacuate the system. – Residual gas in the refrigerant lines will cause bursting of the pipes or an explosion.
Do not use oxygen, flammable gas, or a refrigerant containing chlorine for air-tightness testing. – Doing so may result in an explosion. Chlorine will deteriorate the refrigerant oil.
When installing or relocating the unit, do not allow air or any substance other than the specified refrigerant to enter the refrigerant lines. – Any substance other than the specified refrigerant may cause abnormally high pressure in the refrigerant lines,
resulting in bursting of the pipes or an explosion.
After the installation has been completed, check for refrigerant leaks. – If the refrigerant leaks, oxygen starvation may result. If the leaked refrigerant comes in contact with a heat source,
toxic gas will be generated.
1-5. Precautions for electrical wiring

Include some slack in the power cables. – Failure to do so may break or overheat the cables, resulting in smoke or fire.
Connections must be made securely and without tension on the terminals. – Improperly connected cables may break, overheat, or cause smoke or fire.
Tighten all terminal screws to the specified torque. – Loose screws and contact failure may result in smoke or fire.
Electrical work must be performed by qualified personnel in accordance with local regulations and the instructions provided in this manual. Only use the specified cables and dedicated circuits. – Inadequate power source capacity or improper electrical work will result in electric shock, malfunction, or fire.
Install an inverter circuit breaker on the power supply of each unit. – Failure to do so may result in electric shock or fire.
Only use properly rated breakers (an earth leakage breaker, local switch <a switch + fuse that meets local electrical codes>, or overcurrent breaker). – Failure to do so may result in electric shock, malfunction, smoke, or fire.

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Only use standard power cables of sufficient capacity. – Failure to do so may result in current leakage, overheating, smoke, or fire.
Proper grounding must be provided by qualified personnel. – Improper grounding may result in electric shock, fire, explosion, or malfunction due to electrical noise. Do not
connect the ground wire to gas or water pipes, lightning rods, or telephone ground wires.

GB

After the wiring work has been completed, measure the insulation resistance, and make sure that it reads at least 1 M. – Failure to do so may result in electric leakage, malfunction, or fire.
1-6. Precautions for relocating or repairing the unit

Only qualified personnel must relocate or repair the unit. Do not attempt to disassemble or alter the unit. – Failure to do so will result in refrigerant leakage, water leakage, serious injury, electric shock, or fire.
Do not service the unit in the rain. – Doing so may result in electric leakage, electric shock, wire shorting, malfunction, smoke, or fire.
1-7. Additional precautions
Do not turn off the power immediately after stopping operation. – Wait for at least five minutes after the unit has stopped before turning off the power. Failure to do so may result in
drain water leakage or the mechanical failure of sensitive parts.
The unit must be periodically inspected by a dealer or qualified personnel. – If dust or dirt accumulates inside the unit, the drain pipes may become clogged, and water leakage from the pipes
may wet the surroundings and generate odours.
Turn on the power at least 12 hours before starting operation. Keep the power turned on throughout the operating season. – Insufficient energizing will result in malfunction.
Do not use the air conditioner for special purposes (e.g. keeping food, animals, plants, precision devices, or art objects in a room). – Such items could be damaged or deteriorated.
Collect the refrigerant and properly dispose of it in accordance with local regulations.
Do not install the unit on or over items that are subject to water damage. – When the room humidity exceeds 80% or if the drain pipe is clogged, condensation may collect and drip from the
indoor unit onto the ceiling or floor.
Drain piping must be installed by a dealer or qualified personnel to ensure proper drainage. – Improper drain piping may cause water leakage, resulting in damage to furniture and other surroundings.
Take appropriate measures against electrical noise interference when installing the unit in hospitals or radio communication facilities. – Inverter, high-frequency medical, or wireless communication equipment as well as power generators may cause the
air conditioning system to malfunction. The air conditioning system may also adversely affect the operation of these types of equipment by creating electrical noise.
Insulate pipes to prevent condensation. – Condensation may collect and drip from the unit onto the ceiling or floor.
Keep the service valves closed until refrigerant charging is completed. – Failure to do so will damage the unit.

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Place a wet towel on the service valves before brazing the pipes to keep the temperature of the valves from rising above 120ºC (248ºF). – Failure to do so may result in equipment damage.
Keep the flame out of contact with the cables and metal sheet when brazing the pipes. – Failure to do so may result in burnout or malfunction.
Use the following tools specifically designed for use with the specified refrigerant: Gauge manifold, charge hose, gas leak detector, check valve, refrigerant charge base, vacuum gauge, and refrigerant recovery equipment. – Gas leak detectors for conventional refrigerants will not react to a refrigerant that does not contain chlorine. – If the specified refrigerant is mixed with water, refrigerant oil, or another refrigerant, the refrigerant oil will deteriorate
and the compressor will malfunction.
Use a vacuum pump with a check valve. – If the vacuum pump oil flows back into the refrigerant lines, the refrigerant oil may deteriorate and the compressor
may malfunction.
Keep tools clean. – If dust, dirt, or water accumulates on the charging hose or the flare processing tool, the refrigerant will deteriorate
and the compressor will malfunction.
Use refrigerant piping made of phosphorus deoxidized copper (copper and copper alloy seamless pipes) that meets local requirements. Pipe joints should also meet local requirements. Keep the inner and outer surfaces of the pipes clean and free of sulphur, oxides, dust/dirt, shaving particles, oils, moisture, or any other contaminants. – Contaminants on the inside of the refrigerant piping will cause the refrigerant oil to deteriorate and cause the
compressor to malfunction.
Store pipes indoors, and keep both ends of the pipes sealed until just before making a flare connection or brazing. (Store elbows and other joints in plastic bags.) – If dust, dirt, or water enters the refrigerant lines, the refrigerant oil will deteriorate and the compressor will
malfunction.
Braze the pipes with a nitrogen purge to avoid oxidation. – Oxidized flux inside the refrigerant pipes will cause the refrigerant oil to deteriorate and cause the compressor to
malfunction.
Do not use existing refrigerant piping. – The old refrigerant and refrigerant oil in the existing piping contain a large amount of chlorine, which will cause the
refrigerant oil in the new unit to deteriorate and cause the compressor to malfunction.
Charge refrigerant in a liquid state. – Charging refrigerant in the gaseous state will change the composition of the refrigerant and lead to a performance
drop.
Do not use a charging cylinder when charging refrigerant. – The use of a charging cylinder may change the composition of the refrigerant and lead to a performance drop.
If a large electric current flows due to a malfunction or faulty wiring, earth-leakage breakers on the unit side and on the upstream side of the power supply system could both operate. Depending on the importance of the system, separate the power supply system or take protective coordination of breakers.
This appliance is intended to be used by expert or trained users in shops, in light industry and on farms, or for commercial use by lay persons.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
Only qualified personnel may touch the USB port in the control box.

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About the product

The outdoor unit described in this manual is air-conditioning equipment that is designed only for human comfort. The numeric values in the unit model name (e.g., PURY-PTNU-A, PURY-PYNU-A, PURY-EPTNU-A, PURY-EPYNU-A) indicate the
capacity index of the unit. This unit uses R410A refrigerant.

Combination of outdoor units

(1) TNU models (208-230 V)

Outdoor unit model PURY-P72TNU-A(-BS) PURY-P96TNU-A(-BS) PURY-P120TNU-A(-BS) PURY-P144TNU-A(-BS) PURY-P168TNU-A(-BS) PURY-P192TSNU-A(-BS) PURY- P216TSNU-A(-BS) PURY-P240TSNU-A(-BS) PURY-P264TSNU-A(-BS) PURY-P288TSNU-A(-BS) PURY-P312TSNU-A(-BS) PURY-P336TSNU-A(-BS)

PURY-P96TNU-A(-BS) PURY-P120TNU-A(-BS) PURY-P120TNU-A(-BS) PURY-P144TNU-A(-BS) PURY-P144TNU-A(-BS) PURY-P168TNU-A(-BS) PURY-P168TNU-A(-BS)

Outdoor unit model PURY-EP72TNU-A(-BS) PURY-EP96TNU-A(-BS) PURY- EP120TNU-A(-BS) PURY-EP144TNU-A(-BS) PURY-EP168TNU-A(-BS) PURY-EP192TNU-A(-BS) PURY-EP192TSNU-A(-BS) PURY-EP216TNU-A(-BS) PURY-EP216TSNU-A(-BS) PURY- EP240TNU-A(-BS) PURY-EP240TSNU-A(-BS) PURY-EP264TSNU-A(-BS) PURY- EP288TSNU-A(-BS) PURY-EP312TSNU-A(-BS) PURY-EP336TSNU-A(-BS) PURY- EP384TSNU-A(-BS) PURY-EP432TSNU-A(-BS)

PURY-EP96TNU-A(-BS) PURY-EP120TNU-A(-BS) PURY-EP120TNU-A(-BS) PURY- EP144TNU-A(-BS) PURY-EP144TNU-A(-BS) PURY-EP168TNU-A(-BS) PURY-EP168TNU-A(-BS) PURY-EP192TNU-A(-BS) PURY-EP216TNU-A(-BS)

  • “Twinning Kit” is required to connect combination units on site.

(2) YNU models (460 V)

Outdoor unit model PURY-P72YNU-A(-BS) PURY-P96YNU-A(-BS) PURY-P120YNU-A(-BS) PURY-P144YNU-A(-BS) PURY-P168YNU-A(-BS) PURY-P192YSNU-A(-BS) PURY- P216YSNU-A(-BS) PURY-P240YSNU-A(-BS) PURY-P264YSNU-A(-BS) PURY-P288YSNU-A(-BS) PURY-P312YSNU-A(-BS) PURY-P336YSNU-A(-BS)

PURY-P96YNU-A(-BS) PURY-P120YNU-A(-BS) PURY-P120YNU-A(-BS) PURY-P144YNU-A(-BS) PURY-P144YNU-A(-BS) PURY-P168YNU-A(-BS) PURY-P168YNU-A(-BS)

Outdoor unit model PURY-EP72YNU-A(-BS) PURY-EP96YNU-A(-BS) PURY- EP120YNU-A(-BS) PURY-EP144YNU-A(-BS) PURY-EP168YNU-A(-BS) PURY-EP192YNU-A(-BS) PURY-EP192YSNU-A(-BS) PURY-EP216YNU-A(-BS) PURY-EP216YSNU-A(-BS) PURY- EP240YNU-A(-BS) PURY-EP240YSNU-A(-BS) PURY-EP264YSNU-A(-BS) PURY- EP288YSNU-A(-BS) PURY-EP312YSNU-A(-BS) PURY-EP336YSNU-A(-BS) PURY- EP384YSNU-A(-BS) PURY-EP432YSNU-A(-BS)

PURY-EP96YNU-A(-BS) PURY-EP120YNU-A(-BS) PURY-EP120YNU-A(-BS) PURY- EP144YNU-A(-BS) PURY-EP144YNU-A(-BS) PURY-EP168YNU-A(-BS) PURY-EP168YNU-A(-BS) PURY-EP192YNU-A(-BS) PURY-EP216YNU-A(-BS)

  • “Twinning Kit” is required to connect combination units on site.

Combination of outdoor units –
PURY-P96TNU-A(-BS) PURY-P96TNU-A(-BS) PURY-P120TNU-A(-BS) PURY-P120TNU-A(-BS) PURY-P144TNU-A(-BS) PURY-P144TNU-A(-BS) PURY-P168TNU-A(-BS)
Combination of outdoor units –
PURY-EP96TNU-A(-BS) –
PURY-EP96TNU-A(-BS) –
PURY-EP120TNU-A(-BS) PURY-EP120TNU-A(-BS) PURY-EP144TNU-A(-BS) PURY- EP144TNU-A(-BS) PURY-EP168TNU-A(-BS) PURY-EP192TNU-A(-BS) PURY-EP216TNU-A(-BS)
Combination of outdoor units –
PURY-P96YNU-A(-BS) PURY-P96YNU-A(-BS) PURY-P120YNU-A(-BS) PURY-P120YNU-A(-BS) PURY-P144YNU-A(-BS) PURY-P144YNU-A(-BS) PURY-P168YNU-A(-BS)
Combination of outdoor units –
PURY-EP96YNU-A(-BS) –
PURY-EP96YNU-A(-BS) –
PURY-EP120YNU-A(-BS) PURY-EP120YNU-A(-BS) PURY-EP144YNU-A(-BS) PURY- EP144YNU-A(-BS) PURY-EP168YNU-A(-BS) PURY-EP192YNU-A(-BS) PURY-EP216YNU-A(-BS)

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Specifications

(1) TNU models

Model

Sound level4 5

External static pressure

Total capacity

Indoor unit

Model

Quantity R2 system

Temperature range (Cooling)

Indoor Outdoor

W.B. D.B.

Temperature range (Heating)

Indoor Outdoor

D.B. W.B.

Model Sound level4 5 External static pressure
Indoor unit
Temperature range (Cooling) Temperature range (Heating)

Total capacity

Model

Quantity

Indoor

W.B.

Outdoor

D.B.

Indoor

D.B.

Outdoor

W.B.

Model Sound level4 5 External static pressure
Indoor unit
Temperature range (Cooling) Temperature range (Heating)

Total capacity

Model

Quantity

Indoor

W.B.

Outdoor

D.B.

Indoor

D.B.

Outdoor

W.B.

PURY-P72TNU-A

PURY-P96TNU-A

56.5 dB

58.5 dB

0 Pa*2

50% to 150%*1

05 to 96

1 to 18

1 to 24

+15.0°C to +24.0°C (+59.0°F to +75.0°F)

-5.0°C to +52.0°C (+23.0°F to +125.6°F)

+15.0°C to +27.0°C (+59.0°F to +81.0°F)

-25.0°C to +15.5°C (-13.0°F to +60.0°F)*3

PURY-P120TNU-A 60.0 dB
1 to 30

PURY-P144TNU-A

PURY-P168TNU-A

PURY-P192TSNU-A

65.0 dB

62.5 dB

58.5 dB

0 Pa*2

50% to 150%*1

05 to 96

1 to 36

1 to 42

1 to 48

+15.0°C to +24.0°C (+59.0°F to +75.0°F)

-5.0°C to +52.0°C (+23.0°F to +125.6°F)

+15.0°C to +27.0°C (+59.0°F to +81.0°F)

-25.0°C to +15.5°C (-13.0°F to +60.0°F)*3

PURY-P240TSNU-A 60.0 dB
2 to 50

PURY-P264TSNU-A

PURY-P288TSNU-A

PURY-P312TSNU-A

65.0 dB

65.0 dB

62.5 dB

0 Pa*2

50% to 150%*1

05 to 96

2 to 50

2 to 50

2 to 50

+15.0°C to +24.0°C (+59.0°F to +75.0°F)

-5.0°C to +52.0°C (+23.0°F to +125.6°F)

+15.0°C to +27.0°C (+59.0°F to +81.0°F)

-25.0°C to +15.5°C (-13.0°F to +60.0°F)*3

PURY-P216TSNU-A 60.0 dB
2 to 50
PURY-P336TSNU-A 62.5 dB
2 to 50

Model

Sound level4 5

External static pressure

Total capacity

Indoor unit

Model

Quantity R2 system

Temperature range (Cooling)

Indoor Outdoor

W.B. D.B.

Temperature range (Heating)

Indoor Outdoor

D.B. W.B.

Model Sound level4 5 External static pressure
Indoor unit
Temperature range (Cooling) Temperature range (Heating)

Total capacity

Model

Quantity

Indoor

W.B.

Outdoor

D.B.

Indoor

D.B.

Outdoor

W.B.

Model Sound level4 5 External static pressure
Indoor unit
Temperature range (Cooling) Temperature range (Heating)

Total capacity

Model

Quantity

Indoor

W.B.

Outdoor

D.B.

Indoor

D.B.

Outdoor

W.B.

PURY-EP72TNU-A

PURY-EP96TNU-A

56.5 dB

58.5 dB

0 Pa*2

50% to 150%*1

05 to 96

1 to 18

1 to 24

+15.0°C to +24.0°C (+59.0°F to +75.0°F)

-5.0°C to +52.0°C (+23.0°F to +125.6°F)

+15.0°C to +27.0°C (+59.0°F to +81.0°F)

-25.0°C to +15.5°C (-13.0°F to +60.0°F)

PURY-EP120TNU-A 60.0 dB
1 to 30

PURY-EP144TNU-A

PURY-EP168TNU-A

PURY-EP192TNU-A

65.0 dB

62.5 dB

64.5 dB

0 Pa*2

50% to 150%*1

05 to 96

1 to 36

1 to 42

1 to 48

+15.0°C to +24.0°C (+59.0°F to +75.0°F)

-5.0°C to +52.0°C (+23.0°F to +125.6°F)

+15.0°C to +27.0°C (+59.0°F to +81.0°F)

-25.0°C to +15.5°C (-13.0°F to +60.0°F)

PURY-EP216TNU-A 66.5 dB
2 to 50

PURY-EP216TSNU-A

PURY-EP240TNU-A

PURY-EP240TSNU-A

60.0 dB

67.5 dB

60.0 dB

0 Pa*2

50% to 150%*1

05 to 96

2 to 50

2 to 50

2 to 50

+15.0°C to +24.0°C (+59.0°F to +75.0°F)

-5.0°C to +52.0°C (+23.0°F to +125.6°F)

+15.0°C to +27.0°C (+59.0°F to +81.0°F)

-25.0°C to +15.5°C (-13.0°F to +60.0°F)

PURY-EP192TSNU-A 58.5 dB
1 to 48
PURY-EP264TSNU-A 65.0 dB
2 to 50

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Model Sound level4 5 External static pressure
Indoor unit
Temperature range (Cooling) Temperature range (Heating)

Total capacity

Model

Quantity

Indoor

W.B.

Outdoor

D.B.

Indoor

D.B.

Outdoor

W.B.

PURY-EP288TSNU-A 65.0 dB
2 to 50

PURY-EP312TSNU-A

PURY-EP336TSNU-A

PURY-EP384TSNU-A

62.5 dB

62.5 dB

67.5 dB

0 Pa*2

50% to 150%*1

05 to 96

2 to 50

2 to 50

2 to 50

+15.0°C to +24.0°C (+59.0°F to +75.0°F)

-5.0°C to +52.0°C (+23.0°F to +125.6°F)

+15.0°C to +27.0°C (+59.0°F to +81.0°F)

-25.0°C to +15.5°C (-13.0°F to +60.0°F)

PURY-EP432TSNU-A 69.5 dB
2 to 50

1 The maximum total capacity of indoor units operating simultaneously is 150%. 2 To enable the high static pressure setting, set the dipswitch on the main board as follows.

SW6-4: ON SW6-4: OFF

SW6-5: ON 80 Pa 30 Pa

SW6-5: OFF 60 Pa 0 Pa

3 When applying product below -20.0°C (-4.0°F), consult your design engineer for cold climate application best practices, including the use of a backup source for heating. 4 Cooling mode *5 The sound pressure level shown above indicates A-weighted sound pressure level. Although the sound pressure level in JIS has been changed to the sound power level (PWL), the value shown
above indicates the sound pressure level measured by the conventional method for reference purpose.

(2) YNU models

Model

Sound level4 5

External static pressure

Total capacity

Indoor unit

Model

Quantity R2 system

Temperature range (Cooling)

Indoor Outdoor

W.B. D.B.

Temperature range (Heating)

Indoor Outdoor

D.B. W.B.

PURY-P72YNU-A

PURY-P96YNU-A

56.5 dB

58.5 dB

0 Pa*2

50% to 150%*1

05 to 96

1 to 18

1 to 24

+15.0°C to +24.0°C (+59.0°F to +75.0°F)

-5.0°C to +52.0°C (+23.0°F to +125.6°F)

+15.0°C to +27.0°C (+59.0°F to +81.0°F)

-25.0°C to +15.5°C (-13.0°F to +60.0°F)*3

Model Sound level4 5 External static pressure
Indoor unit
Temperature range (Cooling) Temperature range (Heating)

Total capacity

Model

Quantity

Indoor

W.B.

Outdoor

D.B.

Indoor

D.B.

Outdoor

W.B.

PURY-P120YNU-A 60.0 dB
1 to 30

PURY-P144YNU-A

PURY-P168YNU-A

PURY-P192YSNU-A

65.0 dB

62.5 dB

58.5 dB

0 Pa*2

50% to 150%*1

05 to 96

1 to 36

1 to 42

1 to 48

+15.0°C to +24.0°C (+59.0°F to +75.0°F)

-5.0°C to +52.0°C (+23.0°F to +125.6°F)

+15.0°C to +27.0°C (+59.0°F to +81.0°F)

-25.0°C to +15.5°C (-13.0°F to +60.0°F)*3

PURY-P216YSNU-A 60.0 dB
2 to 50

Model Sound level4 5 External static pressure
Indoor unit
Temperature range (Cooling) Temperature range (Heating)

Total capacity

Model

Quantity

Indoor

W.B.

Outdoor

D.B.

Indoor

D.B.

Outdoor

W.B.

PURY-P240YSNU-A 60.0 dB
2 to 50

PURY-P264YSNU-A

PURY-P288YSNU-A

PURY-P312YSNU-A

65.0 dB

65.0 dB

62.5 dB

0 Pa*2

50% to 150%*1

05 to 96

2 to 50

2 to 50

2 to 50

+15.0°C to +24.0°C (+59.0°F to +75.0°F)

-5.0°C to +52.0°C (+23.0°F to +125.6°F)

+15.0°C to +27.0°C (+59.0°F to +81.0°F)

-25.0°C to +15.5°C (-13.0°F to +60.0°F)*3

PURY-P336YSNU-A 62.5 dB
2 to 50

Model

Sound level4 5

External static pressure

Total capacity

Indoor unit

Model

Quantity R2 system

Temperature range (Cooling)

Indoor Outdoor

W.B. D.B.

Temperature range (Heating)

Indoor Outdoor

D.B. W.B.

Model Sound level4 5 External static pressure
Indoor unit
Temperature range (Cooling) Temperature range (Heating)

Total capacity

Model

Quantity

Indoor

W.B.

Outdoor

D.B.

Indoor

D.B.

Outdoor

W.B.

PURY-EP72YNU-A

PURY-EP96YNU-A

56.5 dB

58.5 dB

0 Pa*2

50% to 150%*1

05 to 96

1 to 18

1 to 24

+15.0°C to +24.0°C (+59.0°F to +75.0°F)

-5.0°C to +52.0°C (+23.0°F to +125.6°F)

+15.0°C to +27.0°C (+59.0°F to +81.0°F)

-25.0°C to +15.5°C (-13.0°F to +60.0°F)

PURY-EP120YNU-A 60.0 dB
1 to 30

PURY-EP144YNU-A

PURY-EP168YNU-A

PURY-EP192YNU-A

65.0 dB

62.5 dB

64.5 dB

0 Pa*2

50% to 150%*1

05 to 96

1 to 36

1 to 42

1 to 48

+15.0°C to +24.0°C (+59.0°F to +75.0°F)

-5.0°C to +52.0°C (+23.0°F to +125.6°F)

+15.0°C to +27.0°C (+59.0°F to +81.0°F)

-25.0°C to +15.5°C (-13.0°F to +60.0°F)

PURY-EP192YSNU-A 58.5 dB
1 to 48

WT09106X04

GB-9

Model Sound level4 5 External static pressure
Indoor unit
Temperature range (Cooling) Temperature range (Heating)

Total capacity

Model

Quantity

Indoor

W.B.

Outdoor

D.B.

Indoor

D.B.

Outdoor

W.B.

Model Sound level4 5 External static pressure
Indoor unit
Temperature range (Cooling) Temperature range (Heating)

Total capacity

Model

Quantity

Indoor

W.B.

Outdoor

D.B.

Indoor

D.B.

Outdoor

W.B.

PURY-EP216YNU-A 66.5 dB
2 to 50
PURY-EP288YSNU-A 65.0 dB
2 to 50

PURY-EP216YSNU-A

PURY-EP240YNU-A

PURY-EP240YSNU-A

60.0 dB

67.5 dB

60.0 dB

0 Pa*2

50% to 150%*1

05 to 96

2 to 50

2 to 50

2 to 50

+15.0°C to +24.0°C (+59.0°F to +75.0°F)

-5.0°C to +52.0°C (+23.0°F to +125.6°F)

+15.0°C to +27.0°C (+59.0°F to +81.0°F)

-25.0°C to +15.5°C (-13.0°F to +60.0°F)

PURY-EP312YSNU-A PURY-EP336YSNU-A PURY-EP384YSNU-A

62.5 dB

62.5 dB

67.5 dB

0 Pa*2

50% to 150%*1

05 to 96

2 to 50

2 to 50

2 to 50

+15.0°C to +24.0°C (+59.0°F to +75.0°F)

-5.0°C to +52.0°C (+23.0°F to +125.6°F)

+15.0°C to +27.0°C (+59.0°F to +81.0°F)

-25.0°C to +15.5°C (-13.0°F to +60.0°F)

PURY-EP264YSNU-A 65.0 dB
2 to 50
PURY-EP432YSNU-A 69.5 dB
2 to 50

1 The maximum total capacity of indoor units operating simultaneously is 150%. 2 To enable the high static pressure setting, set the dipswitch on the main board as follows.

SW6-4: ON SW6-4: OFF

SW6-5: ON 80 Pa 30 Pa

SW6-5: OFF 60 Pa 0 Pa

3 When applying product below -20.0°C (-4.0°F), consult your design engineer for cold climate application best practices, including the use of a backup source for heating. 4 Cooling mode *5 The sound pressure level shown above indicates A-weighted sound pressure level. Although the sound pressure level in JIS has been changed to the sound power level (PWL), the value shown
above indicates the sound pressure level measured by the conventional method for reference purpose.

WT09106X04

GB-10

Package contents

The table below lists all the parts and their quantities included in the package. (1) P models

P72 P96 P120 P144 P168

Tie band
2 2 2 2 2

(2) EP models

EP72 EP96 EP120 EP144 EP168 EP192 EP216 EP240

Tie band
2 2 2 2 2 2 2 2

GB

WT09106X04

GB-11

Transporting the unit

When lifting the unit, pass the slings through the four designated sling holes. – Improper lifting will cause the unit to topple or fall, resulting in serious injury.

Always use two slings to lift up the unit. Each sling must be at least 8 m (26 ft) long and must be able to support the weight of the unit. Put protective pads between slings and the unit where the slings touch the unit at the base to protect the unit from being scratched. Put 50 mm (2 in) or thicker protective pads between slings and the unit where the slings touch the unit at the top of the unit to protect the unit from
being scratched and to avoid contact with the slings and the fan guard.
Make sure that the angles between slings at the top are less than 40 degrees.

P72, EP72

P96, P120, P144, EP96, EP120, EP144

40°

40°

P168, EP168, EP192, EP216, EP240 40°

Slings (Min. 8 m (26 ft) x 2) Protective pads (Minimum thickness: 50 mm
(2 in)) (two each in the front and back) Protective pads (two each in the front and back) Sling holes (two each in the front and back) Fan guard

WT09106X04

GB-12

Installation location

Do not install the unit where combustible gas may leak. – If combustible gas accumulates around the unit, fire or explosion may result.
Provide sufficient space around the unit for effective operation, efficient air movement, and ease of access for maintenance. Note that refrigerant gas is heavier than air and will therefore tend to collect in low spots such as basements. When an indoor unit that draws in outside air exits near the outdoor unit, be careful not to affect the normal operation of the indoor unit. When the amount of drain water is excessive, drain water comes out of the outdoor unit along the panel during heating operation. Provide
sufficient space around the unit according to the instructions below.

7-1. Single unit installation
(1) When all walls are within their height limits*.

  • Height limit Front/Right/Left/Rear Same height or lower than the overall height of the unit

[mm (in)]

Unit height Unit height Unit height
GB

L3

L2

L1

When the distance behind the unit (L2) needs to be small When the distance to the right or left (L3) needs to be small

Required minimum distance [mm (in)]

L1 (Front)

L2 (Rear)

L3 (Right/Left)

450 (17-3/4)

100 (3-15/16)

50 (2)

450 (17-3/4)

300 (11-13/16)

15 (5/8)

(2) When one or more walls exceed their height limits*.

When the wall(s) at the front and/or the right/left exceed(s) their height limits

When the wall at the rear exceeds its height limit

When all walls exceed their height limits

h2

h2

h2

Unit height Unit height Unit height
Unit height Unit height Unit height
Unit height Unit height Unit height

h3 h1

L3

L2

L1

L3

L2

L1

h3
h1 L3

L3

L2

L1

Add the dimension that exceeds the height limit (shown as “h1” through “h3” in the figures) to L1, L2, and L3 as shown in the table below.

When the distance behind the unit (L2) needs to be small When the distance to the right or left (L3) needs to be small

L1 (Front) 450 (17-3/4) + h1 450 (17-3/4) + h1

Required minimum distance [mm (in)] L2 (Rear)
100 (3-15/16) + h2 300 (11-13/16) + h2

L3 (Right/Left) 50 (2) + h3 15 (5/8) + h3

(3) When there are overhead obstacles

45°

240 (9-1/2)

1000 (39-3/8)

50 (2)

Air outlet guide (not supplied)

WT09106X04

GB-13

7-2. Multiple unit installation
When installing multiple units, make sure to take into consideration factors such as providing enough space for people to pass through, ample space between blocks of units, and sufficient space for airflow. (The areas marked with in the figures below must be left open.)
In the same way as with the single unit installation, add the dimension that exceeds the height limit (shown as “h1” through “h3” in the figures) to L1, L2, and L3 as shown in the tables below.
If there are walls in the front and rear of the block of units, up to six units (P168, EP168, EP192, EP216, and EP240) can be installed consecutively side by side, and a space of 1000 mm (39-3/8 in) or more must be left between each block of six units.
When the amount of drain water is excessive, drain water comes out of the outdoor unit along the panel during heating operation.

(1) Side-by-side installation When the distances between the units (L4) need to be small

When the distance behind the block of units (L2) needs to be small

h2

L4

Unit height

h1 Unit height

L2
L1

Required minimum distance [mm (in)]

L1 (Front)

L2 (Rear)

450 (17-3/4) + h1

300 (11-13/16) + h2

L4 (Between) 30 (1-3/16)

(2) Face-to-face installation When there are walls in the front and rear of the block of units

L4 h1
Unit height

h2
Unit height
L2 L1

Required minimum distance [mm (in)]

L1 (Front)

L2 (Rear)

450 (17-3/4) + h1

100 (3-15/16) + h2

L4 (Between) 100 (3-15/16)

When there is a wall on either the right or left side of the block of units

h2

Unit height

h1 Unit height

L2
L4 L4

L1

Required minimum distance [mm (in)]

L1 (Front)

L2 (Rear)

450 (17-3/4) + h1

100 (3-15/16) + h2

L4 (Between) 450 (17-3/4)

(3) Combination of face-to-face and side-by-side installations When there are walls in the front and rear of the block of units

h3 Unit height
L3

L4 L4

Required minimum distance [mm (in)]

L3 (Right/Left)

L4 (Between)

15 (5/8) + h3

450 (17-3/4)

When there are two walls in an L-shape

h2

h3

Unit height

Unit height

h2 Unit height

h2′

L2

Unit height

L4
L2′

Required minimum distance [mm (in)]

L2 (Rear)

L2′ (Rear)

300 (11-13/16) + h2

300 (11-13/16) + h2′

L4 (Between) 900 (35-7/16)

Leave open in two directions.

WT09106X04

L3

L2
L4

Required minimum distance [mm (in)]

L2 (Rear)

L3 (Right/Left)

300 (11-13/16) + h2

1000 (39-3/8) + h3

L4 (Between) 900 (35-7/16)

GB-14

Foundation work

Install the unit in accordance with the instructions to minimize the risk of damage from earthquakes and strong winds. – Improper installation will cause the unit to topple, resulting in serious injury.

The unit must be securely installed on a structure that can sustain its weight. – Failure to do so will cause the unit to fall, resulting in serious injury.

When performing the foundation work, make sure that the floor surface has sufficient strength and carefully route pipes and wires in consideration of the water drainage that will be required when the unit is operated.

If considering routing the pipes and wires across the bottom of the unit, make sure that the base is at least 100 mm (3-15/16 in) high so that the through- holes will not be blocked.

Provide a strong base of concrete or angle iron. If a stainless steel base is used, insulate the area between the base and the outdoor unit by putting a rubber cushion or by applying an electrically insulated coating to prevent the base from rusting.

Install the unit on a level surface.

With some types of installation, unit vibration and sound will be transmitted to the floors and walls. In such locations, take measures to prevent

vibration (such as using anti-vibration rubber pads).

[mm (in)]

30 (1-3/16)
GB

M10 anchor bolt (not supplied) (Incorrect installation) The corner section is not securely received. Fixing bracket for post-installed anchor bolts (not supplied) (To be fixed with three screws) Anti-vibration rubber pad (The pad needs to be large enough to cover the entire width of each unit leg.)
Make sure that the corner section is securely received. If not, the unit legs could bend. The length of the projecting part of the anchor bolt should be 30 mm (1-3/16 in) or less. This unit is not designed to be anchored with post- installed anchor bolts unless fixing brackets are installed at the bottom four locations (six
locations for units P168, EP168, EP192, EP216, and EP240).
In abnormally harsh environments such as cold and/or windy areas, sufficient countermeasures to guard against excessive wind and snow should be taken to ensure the unit’s correct operation. When the unit is expected to operate in cooling mode in conditions under 10°C (50°F), in snowy areas, in environments subject to strong winds or rain, install snow hoods of the following specifications (not supplied) as shown in the figure below.

Material: Galvanized steel plate 1.2T Painting: Overall painting with polyester powder Color: Munsell 5Y8/1 (same as the unit color) Size: Refer to the Data Book.

Outlet Inlet Snow hood Raised base

Install the unit so that the wind will not blow directly against the inlet and outlet. If necessary, install the unit on a raised base of the following specifications (not supplied) to prevent damage from snow.

Material: Angle iron (Build a structure that snow and wind can pass through.) Height: Expected maximum snowfall plus 200 mm (7-7/8 in) Width: Within the unit width (If the raised base is too wide, snow will accumulate on the raised base.)

When the unit is used in a cold region and the heating operation is continuously performed for a long time when the outside air temperature is below freezing, install a heater on the raised base or take other appropriate measures to prevent water from freezing on the raised base.
When installing a panel heater, provide sufficient space for maintenance accordingly. For details, refer to the Data Book or installation manual for the panel heater.

WT09106X04

GB-15

Refrigerant piping work

Do not use any refrigerant other than the type indicated in the manuals for the unit and on the nameplate. – Doing so will cause the unit or pipes to burst, or result in an explosion or fire during use, during repairs, or at the
time of disposal of the unit. – It may also be in violation of applicable laws. – MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for malfunctions or accidents resulting from
the use of the wrong type of refrigerant.
After the installation has been completed, check for refrigerant leaks. – If the refrigerant leaks, oxygen starvation may result. If the leaked refrigerant comes in contact with a heat source,
toxic gas will be generated.

Wear protective gloves when working on the unit. – Failure to do so may result in injury. – High-pressure pipes poses a risk of burns if touched with bare hands while the unit is in operation.

Use the following tools specifically designed for use with the specified refrigerant: Gauge manifold, charge hose, gas leak detector, check valve, refrigerant charge base, vacuum gauge, and refrigerant recovery equipment. – Gas leak detectors for conventional refrigerants will not react to a refrigerant that does not contain chlorine. – If the specified refrigerant is mixed with water, refrigerant oil, or another refrigerant, the refrigerant oil will deteriorate
and the compressor will malfunction.
Do not use existing refrigerant piping. – The old refrigerant and refrigerant oil in the existing piping contain a large amount of chlorine, which will cause the
refrigerant oil in the new unit to deteriorate and cause the compressor to malfunction.
9-1. Restrictions
Existing refrigerant piping must not be used because the design pressure for systems using R410A is higher than that for systems using other types of refrigerants.
Do not install outdoor unit piping when it is raining. Do not use special detergents for washing piping. Always observe the restrictions on refrigerant piping (such as pipe size, pipe length, and vertical separation distance) to prevent equipment failure
or a decline in heating/cooling performance. Do not install solenoid valves to prevent oil backflow and compressor start-up failure. Do not install a sight glass because it may show improper refrigerant flow. If a sight glass is installed, inexperienced technicians that use the glass
may overcharge the refrigerant. The pipe from multiple outdoor units must be installed so that oil will not accumulate in the pipe under certain conditions. Refer to the figures
below for details.

  • Small dots in the figures indicate branching points.
    To a BC controller
    (1) The pipe from the outdoor units must be inclined downward to the indoor unit side. In the figure on the right, because the pipe is inclined upward, the oil in the pipe accumulates when Unit 1 is in operation and Unit 2 is stopped.

Unit 1

Unit 2

Unit 1

Unit 2

WT09106X04

GB-16

±15°
GB

(2) The distance between the unit bottom and the pipe (H) must be 0.2 m (7-7/8 in) or below. In the figure on the right, because the distance is more than 0.2 m (7-7/8 in), the oil accumulates in Unit 1 when Unit 2 is in operation and Unit 1 is stopped.

Unit 1

Unit 2

Unit 1
H
H 0.2 m (7-7/8 in)

Unit 2

Unit 1

H

Unit 2

H > 0.2 m (7-7/8 in)

(3) The vertical separation between units (H) must be 0.1 m (3-15/16 in) or below. In the figure on the right, because the distance is more than 0.1 m (3-15/16 in), the oil accumulates in Unit 1 when Unit 2 is in operation and Unit 1 is stopped.

Unit 2

Unit 1

H

H 0.1 m (3-15/16 in)

Unit 2

Unit 1

H

H > 0.1 m (3-15/16 in)

(4) The vertical separation between units (H) must be 0.1 m (3-15/16 in) or below. In the figure on the right, because the distance is more than 0.1 m (3-15/16 in), the oil accumulates in Unit 2 when Unit 1 is in operation and Unit 2 is stopped.

Unit 1

Unit 1

Unit 2

H

Unit 2

H

H 0.1 m (3-15/16 in)

H > 0.1 m (3-15/16 in)

Make sure that the inclination tolerance of the Twinning Kit is ±15° to the ground to avoid unit damage.

Twinning Kit

Restriction on installing the 2-Branch Joint Pipe CMY-R201/202/203/204/205S-G on the high-pressure piping, low-pressure piping, and liquid piping.
To sub BC controller C

A To main BC controller

B To sub BC controller

–Regarding the 2-Branch Joint Pipe on the high-pressure/low-pressure/liquid piping, A and B must be installed horizontally, and C must be installed upward higher than the horizontal plane of A and B.
If the length of the pipe between the branching point and the outdoor unit exceeds 2 m (6 ft), provide a trap within 2 m (6 ft) from the branching point. The trap must be at least 200 mm (7-7/8 in) in height. (high-pressure pipe only) If there is no trap, oil can accumulate inside the pipe, causing a shortage of oil and may damage the compressor.

  • Small dots in the figures indicate branching points.

2 m (6 ft)

To a BC controller Trap (high-pressure pipe only) High-pressure pipe

2 m (6 ft)

WT09106X04

GB-17

9-2. Pipe selection

Use refrigerant piping made of phosphorus deoxidized copper (copper and copper alloy seamless pipes) that meets local requirements. Pipe joints should also meet local requirements. Keep the inner and outer surfaces of the pipes clean and free of sulphur, oxides, dust/dirt, shaving particles, oils, moisture, or any other contaminants.
– Contaminants on the inside of the refrigerant piping will cause the refrigerant oil to deteriorate and cause the compressor to malfunction.

Use refrigerant pipes for use with R410A refrigerant system. Piping for systems for use with other types of refrigerants may not be able to be used. Use refrigerant pipes with the thicknesses specified in the table below.

Size [mm (in)] ø6.35 (ø1/4) ø9.52 (ø3/8) ø12.7 (ø1/2) ø15.88 (ø5/8) ø19.05 (ø3/4) ø22.2 (ø7/8) ø25.4 (ø1) ø28.58 (ø1-1/8) ø31.75 (ø1-1/4) ø34.93 (ø1-3/8) ø41.28 (ø1-5/8)

Minimum wall thickness [mm (in)] 0.67 (0.0265) 0.72 (0.0285) 0.72 (0.0285) 0.8 (0.0315) 0.98 (0.0385) 1.04 (0.0410) 1.17 (0.0460) 1.17 (0.0460) 1.28 (0.0505) 1.28 (0.0505) 1.41 (0.0555)

9-3. Twinning kit selection
Select appropriate twinning kits (sold separately), referring to the sections below.

  • Use an adapter, if necessary, to connect a refrigerant pipe to a twinning pipe of a different diameter.
    9-3-1. 2-Branch Joint Pipe
    A 2-Branch Joint Pipe is used to connect multiple indoor units to a port.

(1) R2 system

Total capacity of downstream indoor units 72 or below 73 to 96

Kit model CMY-Y102SS-G2 CMY-Y102LS-G2

9-3-2. Joint Pipe Kit
A Joint Pipe Kit is used to connect an indoor unit of P72 model or above.

Indoor unit model P72 to P96

Kit model CMY-R160-J1

  • When connecting P72 through P96 models of indoor units to two ports, set the dipswitch SW4-6 on the BC controller to ON.

9-3-3. Outdoor unit twinning kit
Outdoor unit twinning kit is used to combine multiple outdoor units.

Total capacity of outdoor units P192 to 240T/YSNU, EP192 to 240T/YSNU P264 to 336T/YSNU, EP264 to 432T/YSNU

Kit model CMY-R200NCBK CMY-R300NCBK

WT09106X04

GB-18

9-4. Pipe connection example
9-4-1. Example of pipe connection between outdoor units

On-site piping Twinning Kit The pipe section before the twinning pipe must
have at least 500 mm (19-11/16 in) of straight section.

GB

WT09106X04

GB-19

9-4-2. Example of pipe connection between an outdoor unit and BC controller, and between a BC controller and indoor unit (R2 system)

P72 to P168 EP72 to EP240

Unit 1

A A

a

b

a

b

B
B
c c

d d

Outdoor unit BC controller (Main) BC controller (Sub) Indoor unit (Total capacity of downstream indoor
units: 05 to 30)
Indoor unit (Total capacity of downstream indoor units: 72 to 96)
Joint Pipe Kit 2-Branch Joint Pipe Outdoor unit twinning kit High-pressure pipe (A, A1, A2) Low-pressure pipe (A, A1, A2) High-pressure pipe (C, D, E, F, G, H, I) Low-pressure pipe (C, D, E, F, G, H, I) Liquid pipe (C, D, E, F, G, H, I) Liquid pipe (a, b, c, d, e, f, g, h) Gas pipe (a, b, c, d, e, f, g, h)

*1
P192 to P336 EP192 to EP432

Unit 1

Unit 2

A1 A1

A2 A2

A

A

a b

a

b

ee

C

DD D

E

G

C

E

G

C

E

G

F FF

B B

c c

dd

ff

*1

*1 j

I I I HH H

gg

hh

l k

i

  • Contact your dealer for pipe connection examples when connecting CMB-PNU-J1, CMB-PNU-JA1, CMB-PNU-KA1, or CMB-PNU-KB1.

WT09106X04

GB-20

GB

Pipes A, A1, A2
Unit model
P72T/YNU P96T/YNU P120T/YNU P144T/YNU P168T/YNU P192T/YSNU P216T/YSNU P240T/YSNU P264T/YSNU P288T/YSNU P312T/YSNU P336T/YSNU

Combination unit

Unit 1

Unit 2

–

–

–

–

–

–

–

–

–

–

P96

P96

P120

P96

P120

P120

P144

P120

P144

P144

P168

P144

P168

P168

Pipe A

High-pressure

Low-pressure

ø15.88 (5/8)

ø19.05 (3/4)

ø19.05 (3/4)

ø22.2 (7/8)

ø19.05 (3/4)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

ø22.2 (7/8)*2

ø28.58 (1-1/8)

ø22.2 (7/8)*2

ø34.93 (1-3/8)

ø28.58 (1-1/8)

ø34.93 (1-3/8)

ø28.58 (1-1/8)

ø34.93 (1-3/8)

ø28.58 (1-1/8)

ø41.28 (1-5/8)

ø28.58 (1-1/8)

ø41.28 (1-5/8)

Pipe A1*1

High-pressure

Low-pressure

–

–

–

–

–

–

–

–

–

–

ø19.05 (3/4)

ø22.2 (7/8)

ø19.05 (3/4)

ø28.58 (1-1/8)

ø19.05 (3/4)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

[mm (in)]

Pipe A2*1

High-pressure

Low-pressure

–

–

–

–

–

–

–

–

–

–

ø19.05 (3/4)

ø22.2 (7/8)

ø19.05 (3/4)

ø22.2 (7/8)

ø19.05 (3/4)

ø28.58 (1-1/8)

ø19.05 (3/4)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

Pipes A, A1, A2 Unit model

Combination unit

Unit 1

Unit 2

Pipe A

High-pressure

Low-pressure

Pipe A1*1

High-pressure

Low-pressure

EP72T/YNU

–

–

ø15.88 (5/8)

ø19.05 (3/4)

–

–

EP96T/YNU

–

–

ø19.05 (3/4)

ø22.2 (7/8)

–

–

EP120T/YNU

–

–

ø19.05 (3/4)

ø28.58 (1-1/8)

–

–

EP144T/YNU

–

–

ø22.2 (7/8)

ø28.58 (1-1/8)

–

–

EP168T/YNU

–

–

ø22.2 (7/8)

ø28.58 (1-1/8)

–

–

EP192T/YNU

–

–

ø22.2 (7/8)

ø28.58 (1-1/8)

–

–

EP192T/YSNU

EP96

EP96

ø22.2 (7/8)

ø28.58 (1-1/8)

ø19.05 (3/4)

ø22.2 (7/8)

EP216T/YNU

–

–

ø22.2 (7/8)*2

ø28.58 (1-1/8)

–

–

EP216T/YSNU

EP120

EP96

ø22.2 (7/8)*2

ø28.58 (1-1/8)

ø19.05 (3/4)

ø28.58 (1-1/8)

EP240T/YNU

–

–

ø22.2 (7/8)*2

ø34.93 (1-3/8)

–

–

EP240T/YSNU

EP120

EP120

ø22.2 (7/8)*2

ø34.93 (1-3/8)

ø19.05 (3/4)

ø28.58 (1-1/8)

EP264T/YSNU

EP144

EP120

ø28.58 (1-1/8)

ø34.93 (1-3/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

EP288T/YSNU

EP144

EP144

ø28.58 (1-1/8)

ø34.93 (1-3/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

EP312T/YSNU

EP168

EP144

ø28.58 (1-1/8)

ø41.28 (1-5/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

EP336T/YSNU

EP168

EP168

ø28.58 (1-1/8)

ø41.28 (1-5/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

EP384T/YSNU

EP192

EP192

ø28.58 (1-1/8)

ø41.28 (1-5/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

EP432T/YSNU

EP216

EP216

ø28.58 (1-1/8)

ø41.28 (1-5/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

1 If the combination units 1 and 2 are in a different order as listed in the table, make sure to use the pipes of appropriate size for the situation. 2 If the length of “High-pressure pipe A” exceeds 65 m (213 ft), use the ø28.58 (ø1-1/8) pipes for all pipes after 65 m (213 ft).

Pipe B

[mm (in)]

Total capacity of indoor units

Pipe

Liquid

Gas

30 or below

ø9.52 (ø3/8)

ø15.88 (ø5/8)

[mm (in)]

Pipe A2*1

High-pressure

Low-pressure

–

–

–

–

–

–

–

–

–

–

–

–

ø19.05 (3/4)

ø22.2 (7/8)

–

–

ø19.05 (3/4)

ø22.2 (7/8)

–

–

ø19.05 (3/4)

ø28.58 (1-1/8)

ø19.05 (3/4)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

ø22.2 (7/8)

ø28.58 (1-1/8)

Pipes C, D, E, F, G, H, I (*) Total model number of downstream indoor units 72 or below 73 to 108 109 to 126 127 to 144 145 to 216 217 to 234 235 to 288 289 to 360 361 or above

High-pressure ø15.88 (ø5/8) ø19.05 (ø3/4) ø19.05 (ø3/4) ø22.2 (ø7/8) ø22.2 (ø7/8) ø28.58 (ø1-1/8) ø28.58 (ø1-1/8) ø28.58 (ø1-1/8) ø34.93 (ø1-3/8)

Pipe Low-pressure ø19.05 (ø3/4) ø22.2 (ø7/8) ø28.58 (ø1-1/8) ø28.58 (ø1-1/8) ø28.58 (ø1-1/8) ø28.58 (ø1-1/8) ø34.93 (ø1-3/8) ø41.28 (ø1-5/8) ø41.28 (ø1-5/8)

[mm (in)] Liquid ø9.52 (ø3/8) ø9.52 (ø3/8) ø12.7 (ø1/2) ø12.7 (ø1/2) ø15.88 (ø5/8) ø15.88 (ø5/8) ø19.05 (ø3/4) ø19.05 (ø3/4) ø19.05 (ø3/4)

Pipes a, b, c, d, e, f, g, h (*)
Capacity index of indoor unit
05, 06, 08, 12, 15, 18 24, 27, 30, 36, 48, 54
72 96

[mm (in)]

Pipe

Liquid

Gas

ø6.35 (ø1/4)

ø12.7 (ø1/2)

ø9.52 (ø3/8)

ø15.88 (ø5/8)

ø9.52 (ø3/8)

ø19.05 (ø3/4)

ø9.52 (ø3/8)

ø22.2 (ø7/8)

Pipes i, j, k, l (*)
Capacity index of indoor unit
36 48 54

Liquid pipe

i

j

ø9.52 (ø3/8)

ø9.52 (ø3/8)

ø9.52 (ø3/8)

ø9.52 (ø3/8)

ø9.52 (ø3/8)

ø9.52 (ø3/8)

[mm (in)]

Gas pipe

k

l

ø15.88 (ø5/8)

ø15.88 (ø5/8)

ø15.88 (ø5/8)

ø15.88 (ø5/8)

ø15.88 (ø5/8)

ø15.88 (ø5/8)

72

ø9.52 (ø3/8)

ø9.52 (ø3/8)

ø19.05 (ø3/4)

ø15.88 (ø5/8)

96

ø9.52 (ø3/8)

ø9.52 (ø3/8)

ø22.2 (ø7/8)

ø15.88 (ø5/8)

  • If the length of high-pressure pipe or liquid pipe exceeds the restriction, use the one size larger pipe. Refer to the BC controller Installation Manual for details.

WT09106X04

GB-21

9-5. Piping connections and valve operations

Before heating the brazed sections, remove the gas and oil that are trapped in the pipes. – Failure to do so may generate fire, resulting in serious injury.
Ventilate the room while servicing the unit. – If the refrigerant leaks, oxygen deficiency may result. If the leaked refrigerant comes in contact with a heat source,
toxic gas will be generated.

Store pipes indoors, and keep both ends of the pipes sealed until just before making a flare connection or brazing. (Store elbows and other joints in plastic bags.) – If dust, dirt, or water enters the refrigerant lines, the refrigerant oil will deteriorate and the compressor will malfunction.

Keep the service valves closed until refrigerant charging is completed. – Failure to do so will damage the unit.

Place a wet towel on the service valves before brazing the pipes to keep the temperature of the valves from rising above 120ºC (248ºF). – Failure to do so may result in equipment damage.

Keep the flame out of contact with the cables and metal sheet when brazing the pipes. – Failure to do so may result in burnout or malfunction.

Braze the pipes with a nitrogen purge to avoid oxidation. – Oxidized flux inside the refrigerant pipes will cause the refrigerant oil to deteriorate and cause the compressor to
malfunction.

9-5-1. Removing the pinched connecting pipes
The unit is shipped with the pinched connecting pipes attached to the high- and low-pressure side service valves to prevent gas leakage. Take the following steps through to remove the pinched connecting pipes before connecting refrigerant pipes to the outdoor unit.
Check that the service valves are fully closed (turned clockwise all the way). Remove the gas in the pinched connecting pipes, and drain out all the refrigerant oil. (See below.) Remove the pinched connecting pipes. (See below.)

Refrigerant service valve (high-pressure/brazed) Refrigerant service valve (low-pressure/brazed) Valve shaft
The unit is shipped with the valve closed. Keep the valve closed while connecting pipes or evacuating the system. Open the valve upon completion of this work. Turn the shaft counterclockwise as far as it will go (90°) to open the valve, and clockwise to close it.
Stopper pin Prevents the shaft from turning 90° or more.
Service port Through the service ports, you can charge refrigerant, remove the gas in the pinched connecting pipes, or evacuate the system.
Cap Remove the cap before turning the shaft. Put the cap back on upon completion of all work.
Severed section of the pinched connecting pipe Brazed section of the pinched connecting pipe

9-5-2. Connecting pipes
The refrigerant pipe from the outdoor unit is branched at the pipe end, and each branch is then connected to an indoor unit.

Outdoor unit

Indoor unit High-pressure pipe Low-pressure pipe

Connecting method Brazed or flared Brazed Brazed

Branched section

Brazed

When connecting pipes, make sure the service valves are completely closed. Commercially available pipes often contain dust or debris. Always blow them clean with a dry inert gas. Take care to prevent dust, water or other contaminants from entering the pipes during installation. Reduce the number of bending portions as much as possible, and make the bending radius as big as possible. Do not use any commercially available anti-oxidizing agents since they may cause pipe corrosion and degrading of the refrigerant oil. Please
contact Mitsubishi Electric for more details.

Make sure that the pipes are not in contact with each other, unit panels, or base plates. Refer to the twinning kit Installation Manual for how to install the twinning kit.

WT09106X04

GB-22

Obtain joints and elbows on site as necessary according to the pipe diameter, and connect the pipes as shown in the figures below. (1) When routing the pipes through the front of the unit

GB

(2) When routing the pipes through the bottom of the unit

High-pressure side Low-pressure side Refrigerant service valve piping Reducer etc. Elbow On-site piping

Size of refrigerant pipes

P72 P96 P120 P144 P168

On-site piping [mm (in)]

High-pressure side

Low-pressure side

ø15.88 (ø5/8)

ø19.05 (ø3/4)

ø19.05 (ø3/4)

ø22.2 (ø7/8)

ø22.2 (ø7/8)

ø28.58 (ø1-1/8)

EP72 EP96 EP120 EP144 EP168 EP192 EP216 EP240

On-site piping [mm (in)]

High-pressure side

Low-pressure side

ø15.88 (ø5/8)

ø19.05 (ø3/4)

ø19.05 (ø3/4)

ø22.2 (ø7/8)

ø22.2 (ø7/8)

ø28.58 (ø1-1/8) ø34.93 (ø1-3/8)

Service valve piping [mm (in)]

High-pressure side

Low-pressure side

ø22.2 (ø7/8)

ø28.58 (ø1-1/8)

ø28.58 (ø1-1/8)

Service valve piping [mm (in)]

High-pressure side

Low-pressure side

ø22.2 (ø7/8)

ø28.58 (ø1-1/8)

ø28.58 (ø1-1/8)

When expanding the on-site piping, satisfy the minimum insertion depth requirement as follows.

Pipe size [mm (in)] ø5 (ø1/4) or more, less than ø8 (ø3/8) ø8 (ø3/8) or more, less than ø12 (ø1/2) ø12 (ø1/2) or more, less than ø16 (ø11/16) ø16 (ø11/16) or more, less than ø25 (ø1) ø25 (ø1) or more, less than ø35 (ø1-7/16) ø35 (ø1-7/16) or more, less than ø45 (ø1-13/16)

Minimum insertion depth [mm (in)] 6 (1/4) 7 (5/16) 8 (3/8)
10 (7/16) 12 (1/2) 14 (9/16)

WT09106X04

GB-23

9-5-3. Sealing the openings around the pipes
Seal all openings around pipes and wires to keep out small animals, rainwater, or snow. – Failure to do so may result in current leakage, electric shock, or damage to the unit.
Example of closure materials (not supplied) Fill the openings

9-6. Air-tightness test

Do not use oxygen, flammable gas, or a refrigerant containing chlorine for air-tightness testing. – Doing so may result in an explosion. Chlorine will deteriorate the refrigerant oil.

After refrigerant pipe installation is completed, check the system for leaks by conducting an air-tightness test. If there is a leak, the composition of the refrigerant will change and the performance will drop.

Make sure the service valves are closed.

Add pressure to the refrigerant pipes through the service ports of the high- and low-pressure pipes.

  • Pressurize to the design pressure (4.15 MPa) using nitrogen gas.

If the pressure holds for one day and does not decrease, the pipes have passed the test and there are no leaks. If the pressure decreases, there is a leak. Look for the source of the leak by spraying a bubbling agent (e.g., Gupoflex) on the flared or brazed sections.

Wipe off the bubbling agent.

LO

HI

Nitrogen gas To indoor unit Gauge manifold Low pressure knob High pressure knob Service valve Low-pressure pipe High-pressure pipe Outdoor unit Service port

WT09106X04

GB-24

GB

9-7. Thermal insulation for pipes

Insulate pipes to prevent condensation. – Condensation may collect and drip from the unit onto the ceiling or floor.

Insulate the high- and low-pressure pipes, and liquid and gas pipes separately with polyethylene foam insulation materials. Inadequate insulation may cause condensation to drip. Pipes in the ceiling are especially vulnerable to condensation and require adequate insulation.
9-7-1. Insulation material
Check that the insulation materials meet the standards in the table below.

Between an outdoor unit and BC controller

Thickness [mm (in)] Heat resistance

High-pressure pipe Min. 10 (7/16)

Min. 120°C (248°F)

Low-pressure pipe Min. 20 (13/16)

Between a BC controller and indoor unit (R2 system)

Thickness [mm (in)] Heat resistance

ø6.35 (ø1/4)­ø25.4 (ø1) Min. 10 (7/16)

Pipe size [mm (in)] ø28.58 (ø1-1/8)­ø38.1 (ø1­1/2) Min. 15 (5/8)
Min. 120°C (248°F)

  • The insulation thickness may need to be increased in high-temperature/humidity conditions. * Even when specifications are defined by your client, the standards in the table should be met.

Steel wire Pipe Oily mastic asphalt or asphalt Insulation material A Outer covering B

Insulation material Glass fiber + Steel wire

A

Adhesive + Heat-resistant polyethylene foam + Adhesive tape

Indoor

Vinyl tape

Outer covering B Under the floor and exposed

Waterproof hemp cloth + Bronze asphalt

Outdoor

Waterproof hemp cloth + Zinc plate + Oily paint

  • If a polyethylene cover is used as an outer covering, asphalt roofing is not necessary.

Do not insulate the electric wires.

High-pressure pipe or liquid pipe

Low-pressure pipe or gas pipe

Electric wire

Finishing tape

Insulation material

Make sure that the pipe connections all the way from the indoor unit are properly insulated.

WT09106X04

GB-25

9-7-2. Insulation for the section of the pipe that goes through a wall

(1) Inner wall (concealed)

(2) Outer wall

(3) Outer wall (exposed)

(4) Floor (waterproof)

(5) Rooftop pipe shaft

(6) Protecting the penetrating parts in a fire limit zone or through a parting wall

[mm (in)]

1000

1000

(39-3/8) (39-3/8)

Sleeve Insulation material Lagging Caulking material Band Waterproof layer Sleeve with a flange Caulk with a nonflammable material such as mortar. Nonflammable insulation material
When caulking the gaps with mortar, cover the section of the pipe that goes through the wall with a metal sheet to prevent the insulation material from sagging. For this section, use nonflammable insulation and covering materials. (Vinyl tape should not be used.)

9-8. Evacuation of the system

Do not purge the air using refrigerant. Use a vacuum pump to evacuate the system. – Residual gas in the refrigerant lines will cause bursting of the pipes or an explosion.
Use a vacuum pump with a check valve. – If the vacuum pump oil flows back into the refrigerant lines, the refrigerant oil may deteriorate and the compressor
may malfunction.

Evacuate the system from both service ports, using a vacuum pump with the service valves closed. After the vacuum reaches 650 Pa (0.0943 psi/5 Torr), continue evacuation for at least one hour. Stop the vacuum pump and leave it for an hour. Verify that the vacuum has not increased by more than 130 Pa (0.01886 psi/1 Torr). If the vacuum has increased by more than 130 Pa, water infiltration is suspected. Pressurize the system with dry nitrogen gas up to 0.05 MPa (7.25 psi/375 Torr). Repeat though until the vacuum is increased by 130 Pa or below. If the results persist, then perform the “Triple Evacuation” below. Evacuate the system to 533 Pa (0.07729 psi/4 Torr) from both service ports, using a vacuum pump. Pressurize the system with dry nitrogen gas up to 0 Pa (0 psi/0 Torr) from the discharge service port. Evacuate the system to 200 Pa (0.029 psi/1.5 Torr) from the suction service port, using a vacuum pump. Pressurize the system with dry nitrogen gas up to 0 Pa (0 psi/0 Torr) from the discharge service port. Evacuate the system from both service ports, using a vacuum pump. After the vacuum reaches 66.7 Pa (0.09672 psi/5 Torr), stop the vacuum pump and leave it for an hour. A vacuum of 66.7 Pa must be maintained for at least one hour. Verify that the vacuum has not increased for at least 30 minutes.

WT09106X04

GB-26

GB

LO

HI

Gauge manifold

Low pressure knob

High pressure knob

Service valve

Low-pressure pipe

High-pressure pipe

Service port

Three-way joint

Valve (vacuum pump)

Valve (for charging refrigerant)

Refrigerant tank

Scale

Vacuum pump

To indoor unit

Outdoor unit

Use a scale that can measure down to 0.1 kg (0.1 oz). Recommended vacuum gauge: ROBINAIR 14830A Thermistor Vacuum Gauge or Micron Gauge Do not use a gauge manifold to measure the vacuum pressure. Use a vacuum pump capable of attaining a vacuum of 65 Pa (abs) within five minutes of operation.

9-9. Additional refrigerant charge

Charge refrigerant in a liquid state. – Charging refrigerant in the gaseous state will change the composition of the refrigerant and lead to a performance drop.

Do not use a charging cylinder when charging refrigerant. – The use of a charging cylinder may change the composition of the refrigerant and lead to a performance drop.

The amount of refrigerant that is shown in the table below is factory-charged in the outdoor units. The amount necessary for extended piping is not included and needs to be added on site.

Unit model P72 P96 P120 P144 P168

Factory-charged amount [kg (oz)] 5.2 (184) 8.0 (283) 8.0 (283) 10.8 (381) 10.8 (381)

Unit model EP72 EP96 EP120 EP144 EP168 EP192 EP216 EP240

Factory-charged amount [kg (oz)] 5.2 (184) 8.0 (283) 8.0 (283) 10.8 (381) 10.8 (381) 11.8 (416) 11.8 (416) 11.8 (416)

The amount of refrigerant that is shown in the table below is the maximum amount to be added on site.

Unit model P72T/YNU P96T/YNU P120T/YNU P144T/YNU P168T/YNU P192T/YSNU P216T/YSNU P240T/YSNU P264T/YSNU P288T/YSNU P312T/YSNU P336T/YSNU

Maximum amount to be added [kg (oz)] 28.3 (999) 33.5 (1182) 39.5 (1394) 38.5 (1359) 39.5 (1394) 58 (2046) 74 (2611) 74 (2611) 71.2 (2512) 68.4 (2413) 68.4 (2413) 68.4 (2413)

Unit model EP72T/YNU EP96T/YNU EP120T/YNU EP144T/YNU EP168T/YNU EP192T/YNU EP192T/YSNU EP216T/YNU EP216T/YSNU EP240T/YNU EP240T/YSNU EP264T/YSNU EP288T/YSNU EP312T/YSNU EP336T/YSNU EP384T/YSNU EP432T/YSNU

Maximum amount to be added [kg (oz)] 28.3 (999) 33.5 (1182) 39.5 (1394) 38.5 (1359) 39.5 (1394) 38.5 (1359) 58 (2046) 38.5 (1359) 74 (2611) 38.5 (1359) 74 (2611) 71.2 (2512) 68.4 (2413) 68.4 (2413) 68.4 (2413) 54.4 (1919) 54.4 (1919)

WT09106X04

GB-27

The amount of refrigerant that is shown in the table below is the maximum total amount in the system.

Unit model P72T/YNU P96T/YNU P120T/YNU P144T/YNU P168T/YNU P192T/YSNU P216T/YSNU P240T/YSNU P264T/YSNU P288T/YSNU P312T/YSNU P336T/YSNU

Maixmum total amount in the system [kg (oz)] 33.5 (1182) 41.5 (1464) 47.5 (1676) 49.3 (1739) 50.3 (1775) 74 (2611) 90 (3175) 90 (3175) 90 (3175) 90 (3175) 90 (3175) 90 (3175)

Unit model EP72T/YNU EP96T/YNU EP120T/YNU EP144T/YNU EP168T/YNU EP192T/YNU EP192T/YSNU EP216T/YNU EP216T/YSNU EP240T/YNU EP240T/YSNU EP264T/YSNU EP288T/YSNU EP312T/YSNU EP336T/YSNU EP384T/YSNU EP432T/YSNU

Maixmum total amount in the system [kg (oz)] 33.5 (1182) 41.5 (1464) 47.5 (1676) 49.3 (1739) 50.3 (1775) 50.3 (1775) 74 (2611) 50.3 (1775) 90 (3175) 50.3 (1775) 90 (3175) 90 (3175) 90 (3175) 90 (3175) 90 (3175) 78 (2752) 78 (2752)

Both refrigerant overcharge and undercharge will cause problems. Charge the system with the proper amount of refrigerant. Record the added refrigerant amount on the label attached to the control box panel for future servicing.

9-9-1. Calculation of the amount of additional refrigerant
The amount of refrigerant to be added depends on the size and the total length of the high-pressure piping and liquid piping. Calculate the amount of refrigerant to be charged according to the formula below. Round up the calculation result to the nearest 0.1 kg (0.1 oz).

(1) Units “m” and “kg” (In an R2 system)

When the piping length from the outdoor unit to the farthest indoor unit is 30.5 m (100 ft) or shorter

Amount of additional charge (kg)

High-pressure pipe ø28.58 = total length
× 0.36 (kg/m)

High-pressure pipe ø22.2 + total length
× 0.23 (kg/m)

High-pressure pipe ø19.05

High-pressure pipe ø15.88

+ total length

+ total length

× 0.16 (kg/m)

× 0.11 (kg/m)

Liquid pipe ø15.88 total + length
× 0.2 (kg/m)

Liquid pipe ø12.7 total + length
× 0.12 (kg/m)

Liquid pipe ø9.52 total + length
× 0.06 (kg/m)

Liquid pipe ø6.35 total + length
× 0.024 (kg/m)

Main or sub BC controller

J-type

JA-type

KA-type

KB-type

Amount (kg/unit)
1.5 3.0 4.7 0.4

Total capacity of connected

Amount (kg)

indoor units

(to be added for indoor unit)

27 or below

2.0

28 to 54

2.5

55 to 126

3.0

127 to 144

3.5

145 to 180

4.5

181 to 234

5.0

235 to 273

6.0

274 to 307

8.0

308 to 342

9.0

343 to 411

10.0

412 to 450

12.0

451 or above

14.0

Total capacity of outdoor units

72

96

120

144 Single
168

192

216

240

192

216

240

264

Combination

288

312

336

384

432

Amount (kg) (to be added for outdoor unit)

0

0

0

0

0

4.4

4.4

4.4

0

0

0

0

0

0

0

8.8

8.8

Total capacity of outdoor units

72

96

120

144 Single
168

192

216

240

192

216

240

264

Combination

288

312

336

384

432

Amount (kg)
1.5 1.5 3.0 2.5 4.0 3.5 4.0 4.5 4.0 4.5 5.0 2.5 1.5 2.0 2.0 0 0

WT09106X04

GB-28

  • In the case all connected indoor unit models are Case 1 or Case 2, do NOT add the refrigerant listed in table . Instead, add the following amount of refrigerant. Case 1: PLFY-EP06/18/36NEMU-E Add 0.67 kg per PLFY-EP06/18/36NEMU-E. Case 2: PEFY-P06/24/36NMAU-E Add 0.55 kg per PEFY-P06/24/36NMAU-E.

GB

When the piping length from the outdoor unit to the farthest indoor unit is longer than 30.5 m (100 ft)

Amount of additional charge (kg)

High-pressure pipe ø28.58 = total length
× 0.33 (kg/m)

High-pressure pipe ø22.2 + total length
× 0.21 (kg/m)

High-pressure pipe ø19.05

High-pressure pipe ø15.88

+ total length

+ total length

× 0.14 (kg/m)

× 0.1 (kg/m)

Liquid pipe ø15.88 total + length
× 0.18 (kg/m)

Liquid pipe ø12.7 total + length
× 0.11 (kg/m)

Liquid pipe ø9.52 total + length
× 0.054 (kg/m)

Liquid pipe ø6.35 total + length
× 0.021 (kg/m)

Main or sub BC controller
J-type +
JA-type KA-type KB-type

Amount (kg/unit)
1.5 3.0 4.7 0.4

Total capacity of connected

Amount (kg)

indoor units

(to be added for indoor unit)

27 or below

2.0

28 to 54

2.5

55 to 126

3.0

127 to 144

3.5

145 to 180

4.5

181 to 234

5.0

235 to 273

6.0

274 to 307

8.0

308 to 342

9.0

343 to 411

10.0

412 to 450

12.0

451 or above

14.0

Total capacity of outdoor units

72

96

120

144 Single
168

192

216

240

192

216

240

264

Combination

288

312

336

384

432

Amount (kg) (to be added for outdoor unit)
0 0 0 0 0 4.4 4.4 4.4 0 0 0 0 0 0 0 5 5

  • When connecting PLFY-EP06NEMU-E, PLFY-EP18NEMU-E, or PLFY-EP36NEMU-E*, add 0.67 kg of refrigerant per indoor unit. When connecting PEFY-P06NMAU-E, PEFY-P24NMAU-E, or PEFY-P36NMAU-E**, add 0.55 kg of refrigerant per indoor unit.
Outdoor unit 1 model: P120 Outdoor unit 2 model: P120 BC controller (Main) model: CMB-P108NU-JA1 BC controller (Sub) model: CMB-P104NU-KB1 × 4 units Total capacity of connected indoor units: 206
  • Refer to the pipe connection examples in section 9-4 for the pipes marked with the letters below.
    A: ø28.58; 40 m B: ø9.52; 10 m C: ø9.52; 5 m D: ø9.52; 5 m E: ø9.52; 5 m F: ø9.52; 5 m G: ø9.52; 5 m H: ø9.52; 5 m I: ø9.52; 5 m A1: ø19.05; 3 m A2: ø19.05; 1 m a: ø9.52; 10 m b: ø9.52; 5 m c: ø6.35; 5 m d: ø6.35; 10 m e: ø6.35; 5 m f: ø9.52; 5 m

WT09106X04

GB-29

g: ø9.52; 5 m h: ø9.52; 5 m

The total length of the high-pressure piping and liquid piping in each case is as follows: ø28.58 total length: 40 (A) ø19.05 total length: 3 (A1) + 1 (A2) = 4 ø9.52 total length: 10 (B) + 5 (C) + 5 (D) + 5 (E) + 5 (F) + 5 (G) + 5 (H) + 5 (I) + 10 (a) + 5 (b) + 5 (f) + 5 (g)
+ 5 (h) = 75 ø6.35 total length: 5 (c) + 10 (d) + 5 (e) = 20

Therefore, when the piping length from the outdoor unit to the farthest indoor unit is longer than 30.5 m (100 ft), Amount of additional charge = (40 × 0.33)

  • (4 × 0.14) + (75 × 0.054) + (20 × 0.021) + 3.0 + (0.4 × 4) + 5
    = 27.9 kg (Fractions are rounded up.)

(2) Units “ft” and “oz” (In an R2 system)

When the piping length from the outdoor unit to the farthest indoor unit is 30.5 m (100 ft) or shorter

Amount of additional charge (oz)

High-pressure pipe ø1-1/8 = total length
× 3.88 (oz/ft)

High-pressure pipe ø7/8 + total length
× 2.48 (oz/ft)

High-pressure pipe ø3/4 + total length
× 1.73 (oz/ft)

High-pressure pipe ø5/8 + total length
× 1.19 (oz/ft)

Liquid pipe ø5/8 total + length
× 2.16 (oz/ft)

Liquid pipe ø1/2 total + length
× 1.30 (oz/ft)

Liquid pipe ø3/8 total + length
× 0.65 (oz/ft)

Liquid pipe ø1/4 total + length
× 0.26 (oz/ft)

Main or sub BC controller
J-type +
JA-type KA-type KB-type

Amount (oz/unit)
53 106 166 15

Total capacity of connected

Amount (oz)

indoor units

(to be added for indoor unit)

27 or below

71

28 to 54

89

55 to 126

106

127 to 144

124

145 to 180

159

181 to 234

177

235 to 273

212

274 to 307

283

308 to 342

318

343 to 411

353

412 to 450

424

451 or above

494

Total capacity of outdoor units

72

96

120

144 Single
168

192

216

240

192

216

240

264

Combination

288

312

336

384

432

Amount (oz) (to be added for outdoor unit)

0

0

0

0

0

156

156

156

0

0

0

0

0

0

0

311

311

Total capacity of outdoor units

72

96

120

144 Single
168

192

216

240

192

216

240

264

Combination

288

312

336

384

432

Amount (oz)
53 53 106 89 142 124 142 159 142 159 177 89 53 71 71 0 0

  • In the case all connected indoor unit models are Case 1 or Case 2, do NOT add the refrigerant listed in table . Instead, add the following amount of refrigerant. Case 1: PLFY-EP06/18/36NEMU-E Add 24 oz per PLFY-EP06/18/36NEMU-E. Case 2: PEFY-P06/24/36NMAU-E Add 20 oz per PEFY-P06/24/36NMAU-E.

WT09106X04

GB-30

GB

When the piping length from the outdoor unit to the farthest indoor unit is longer than 30.5 m (100 ft)

Amount of additional charge (oz)

High-pressure pipe ø1-1/8 = total length
× 3.54 (oz/ft)

High-pressure pipe ø7/8 + total length
× 2.26 (oz/ft)

High-pressure pipe ø3/4 + total length
× 1.51 (oz/ft)

High-pressure pipe ø5/8 + total length
× 1.08 (oz/ft)

Liquid pipe ø5/8 total + length
× 1.94 (oz/ft)

Liquid pipe ø1/2 total + length
× 1.19 (oz/ft)

Liquid pipe ø3/8 total + length
× 0.59 (oz/ft)

Liquid pipe ø1/4 total + length
× 0.23 (oz/ft)

Main or sub BC controller

J-type

JA-type

KA-type

KB-type

Amount (oz/unit)
53 106 166 15

Total capacity of connected

Amount (oz)

indoor units

(to be added for indoor unit)

27 or below

71

28 to 54

89

55 to 126

106

127 to 144

124

145 to 180

159

181 to 234

177

235 to 273

212

274 to 307

283

308 to 342

318

343 to 411

353

412 to 450

424

451 or above

494

Total capacity of outdoor units

72

96

120

144 Single
168

192

216

240

192

216

240

264

Combination

288

312

336

384

432

Amount (oz) (to be added for outdoor unit)
0 0 0 0 0 156 156 156 0 0 0 0 0 0 0 177 177

  • When connecting PLFY-EP06NEMU-E, PLFY-EP18NEMU-E, or PLFY-EP36NEMU-E*, add 24 oz of refrigerant per indoor unit. When connecting PEFY-P06NMAU-E, PEFY-P24NMAU-E, or PEFY-P36NMAU-E**, add 20 oz of refrigerant per indoor unit.
Outdoor unit 1 model: P120 Outdoor unit 2 model: P120 BC controller (Main) model: CMB-P108NU-JA1 BC controller (Sub) model: CMB-P104NU-KB1 × 4 units Total capacity of connected indoor units: 206
  • Refer to the pipe connection examples in section 9-4 for the pipes marked with the letters below.
    A: ø1-1/8; 131 ft B: ø3/8; 32 ft C: ø3/8; 16 ft D: ø3/8; 16 ft E: ø3/8; 16 ft F: ø3/8; 16 ft G: ø3/8; 16 ft H: ø3/8; 16 ft I: ø3/8; 16 ft A1: ø3/4; 9 ft A2: ø3/4; 3 ft a: ø3/8; 32 ft b: ø3/8; 16 ft c: ø1/4; 16 ft d: ø1/4; 32 ft e: ø1/4; 16 ft f: ø3/8; 16 ft g: ø3/8; 16 ft h: ø3/8; 16 ft

WT09106X04

GB-31

The total length of the high-pressure piping and liquid piping in each case is as follows: ø1-1/8 total length: 131 (A) ø3/4 total length: 9 (A1) + 3 (A2) = 12 ø3/8 total length: 32 (B) + 16 (C) + 16 (D) + 16 (E) + 16 (F) + 16 (G) + 16 (H) + 16 (I) + 32 (a) + 16 (b) + 16 (f)
+ 16 (g) + 16 (h) = 240 ø1/4 total length: 16 (c) + 32 (d) + 16 (e) = 64

Therefore, when the piping length from the outdoor unit to the farthest indoor unit is longer than 30.5 m (100 ft), Amount of additional charge = (131 × 3.54) + (12 × 1.51) + (240 × 0.59) + (64 × 0.23) + 106 + (15 × 4) + 177
= 981.2 oz (Fractions are rounded up.)

9-9-2. Charging additional refrigerant
Charge the calculated amount of refrigerant in the liquid state to the unit through the service port after the completion of piping work. Upon completion of all work, securely tighten all service port caps and shaft caps to prevent refrigerant leakage.

Do not vent the refrigerant into the atmosphere.

Refer to the table below for the appropriate tightening torque.

Pipe size [mm (in)]

Shaft cap (N·m)

Service port cap (N·m)

ø9.52 (ø3/8)

25

ø12.7 (ø1/2)

30

ø15.88 (ø5/8)

35

14

ø19.05 (ø3/4)

25

ø25.4 (ø1)

25

ø28.58 (ø1-1/8)

24.5

18

If the refrigerant tank does not have a siphon pipe, charge the liquid refrigerant with the tank upside-down as shown in the figure below.

Siphon pipe After evacuation and refrigerant charging, ensure that the service valves are fully open. Do not operate the unit with the service valves closed.

WT09106X04

GB-32

10. Electrical work

GB

Electrical work must be performed by qualified personnel in accordance with local regulations and the instructions provided in this manual. Only use the specified cables and dedicated circuits. – Inadequate power source capacity or improper electrical work will result in electric shock, malfunction, or fire.
Proper grounding must be provided by qualified personnel. – Improper grounding may result in electric shock, fire, explosion, or malfunction due to electrical noise. Do not
connect the ground wire to gas or water pipes, lightning rods, or telephone ground wires.
10-1. Before electrical work
When performing electrical work, refer to the indoor unit or controller installation manuals as well. Bear in mind ambient conditions (ambient temperature, direct sunlight, rain water, etc.) when proceeding with the wiring and connections. When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components. Specific wiring requirements should adhere to the wiring regulations of the region. Include some slack in the wiring for the control box on the indoor and outdoor units, because these boxes are sometimes removed at the time of
service work.
10-2. Power cables and device capacity

Include some slack in the power cables. – Failure to do so may break or overheat the cables, resulting in smoke or fire.
Install an inverter circuit breaker on the power supply of each unit. – Failure to do so may result in electric shock or fire.
Only use properly rated breakers (an earth leakage breaker, local switch <a switch + fuse that meets local electrical codes>, or overcurrent breaker). – Failure to do so may result in electric shock, malfunction, smoke, or fire.
Only use standard power cables of sufficient capacity. – Failure to do so may result in current leakage, overheating, smoke, or fire.
Tighten all terminal screws to the specified torque. – Loose screws and contact failure may result in smoke or fire.

If a large electric current flows due to a malfunction or faulty wiring, earth-leakage breakers on the unit side and on the upstream side of the power supply system could both operate. Depending on the importance of the system, separate the power supply system or take protective coordination of breakers.

Wiring example
T(S)NU: 3~208­230 V Y(S)NU: 3~460 V L1, L2, L3
~208­230 V L1, L2

Earth leakage breaker

Outdoor unit

Pull box

Indoor unit

Ground

Standard or main BC controller

Sub BC controller

Be sure to use the appropriate type of overcurrent breaker. Note that generated overcurrent may include some amount of direct current. Select the type of breaker for an inverter circuit as an earth leakage breaker. (Mitsubishi Electric NV-C series or its equivalent) The earth leakage breaker should be used in combination with a local switch. Ensure the correct phase sequence. (L1, L2, and L3) If the power cable is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard. Use dedicated power cables for the outdoor unit and indoor unit. Ensure OC and OS are wired individually. Power cable size, device capacity, and system impedance
(If local regulations do not specify the minimum power cable size or device capacity, follow the values in the table below.)

WT09106X04

GB-33

Power cable size and device capacity MOP is used to select the fuse, switch, or breaker for current leakage.

(1) TNU models (208 V)

Outdoor unit model

Unit combination

PURY-P72TNU-A(-BS) PURY-P96TNU-A(-BS) PURY-P120TNU-A(-BS) PURY-P144TNU-A(-BS) PURY-P168TNU-A(-BS) PURY-P192TSNU-A(-BS)
PURY-P216TSNU-A(-BS)
PURY-P240TSNU-A(-BS)
PURY-P264TSNU-A(-BS)
PURY-P288TSNU-A(-BS)
PURY-P312TSNU-A(-BS)
PURY-P336TSNU-A(-BS) PURY-EP72TNU-A(-BS) PURY-EP96TNU-A(-BS) PURY- EP120TNU-A(-BS) PURY-EP144TNU-A(-BS) PURY-EP168TNU-A(-BS) PURY-EP192TNU-A(-BS) PURY-EP192TSNU-A(-BS) PURY-EP216TNU-A(-BS) PURY-EP216TSNU-A(-BS) PURY- EP240TNU-A(-BS) PURY-EP240TSNU-A(-BS)
PURY-EP264TSNU-A(-BS)
PURY-EP288TSNU-A(-BS)
PURY-EP312TSNU-A(-BS)
PURY-EP336TSNU-A(-BS)
PURY-EP384TSNU-A(-BS)
PURY-EP432TSNU-A(-BS)

­ ­ ­ ­ ­ PURY-P96TNU-A(-BS) PURY-P96TNU-A(-BS) PURY-P120TNU-A(-BS) PURY- P96TNU-A(-BS) PURY-P120TNU-A(-BS) PURY-P120TNU-A(-BS) PURY-P144TNU-A(-BS) PURY-P120TNU-A(-BS) PURY-P144TNU-A(-BS) PURY-P144TNU-A(-BS) PURY- P168TNU-A(-BS) PURY-P144TNU-A(-BS) PURY-P168TNU-A(-BS) PURY-P168TNU-A(-BS) ­ ­ ­ ­ ­ ­ PURY-EP96TNU-A(-BS) PURY-EP96TNU-A(-BS) ­ PURY-EP120TNU-A(-BS) PURY- EP96TNU-A(-BS) ­ PURY-EP120TNU-A(-BS) PURY-EP120TNU-A(-BS) PURY- EP144TNU-A(-BS) PURY-EP120TNU-A(-BS) PURY-EP144TNU-A(-BS) PURY-EP144TNU-A(-BS) PURY-EP168TNU-A(-BS) PURY-EP144TNU-A(-BS) PURY-EP168TNU-A(-BS) PURY- EP168TNU-A(-BS) PURY-EP192TNU-A(-BS) PURY-EP192TNU-A(-BS) PURY-EP216TNU-A(-BS) PURY-EP216TNU-A(-BS)

Minimum size [mm2 (AWG)]

Power cable

Ground

5.3 (10)

5.3 (10)

8.4 (8)

8.4 (8)

13.3 (6)

13.3 (6)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

13.3 (6)

13.3 (6)

8.4 (8)

8.4 (8)

13.3 (6)

13.3 (6)

13.3 (6)

13.3 (6)

21.2 (4)

21.2 (4)

13.3 (6)

13.3 (6)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

8.4 (8)

8.4 (8)

13.3 (6)

13.3 (6)

21.2 (4)

21.4 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

33.6 (2)

33.6 (2)

13.3 (6)

13.3 (6)

13.3 (6)

13.3 (6)

33.6 (2)

33.6 (2)

21.2 (4)

21.4 (4)

13.3 (6)

13.3 (6)

33.6 (2)

33.6 (2)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

33.6 (2)

33.6 (2)

33.6 (2)

33.6 (2)

33.6 (2)

33.6 (2)

33.6 (2)

33.6 (2)

Earth leakage breaker
30 A 30 mA or 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 35 A 30 mA or 100 mA 0.1 sec. or less 45 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 80 A 100 mA 0.1 sec. or less 45 A 100 mA 0.1 sec. or less 45 A 100 mA 0.1 sec. or less 90 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 45 A 100 mA 0.1 sec. or less 90 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 80 A 100 mA 0.1 sec. or less 80 A 100 mA 0.1 sec. or less 90 A 100 mA 0.1 sec. or less 90 A 100 mA 0.1 sec. or less

MCA (A)
24 33 43 52 61 33 33 43 33 43 43 52 43 52 52 61 52 61 61 23 31 41 49 57 66 31 31 73 41 31 82 41 41 49 41 49 49 57 49 57 57 66 66 73 73

MOP (A)
40 50 70 80 100 50 50 70 50 70 70 80 70 80 80 100 80 100 100 35 45 60 80 90 110 45 45 125 60 45 125 60 60 80 60 80 80 90 80 90 90 110 110 125 125

WT09106X04

GB-34

GB

(2) TNU models (230 V)

Outdoor unit model

Unit combination

PURY-P72TNU-A(-BS) PURY-P96TNU-A(-BS) PURY-P120TNU-A(-BS) PURY-P144TNU-A(-BS) PURY-P168TNU-A(-BS) PURY-P192TSNU-A(-BS)
PURY-P216TSNU-A(-BS)
PURY-P240TSNU-A(-BS)
PURY-P264TSNU-A(-BS)
PURY-P288TSNU-A(-BS)
PURY-P312TSNU-A(-BS)
PURY-P336TSNU-A(-BS) PURY-EP72TNU-A(-BS) PURY-EP96TNU-A(-BS) PURY- EP120TNU-A(-BS) PURY-EP144TNU-A(-BS) PURY-EP168TNU-A(-BS) PURY-EP192TNU-A(-BS) PURY-EP192TSNU-A(-BS) PURY-EP216TNU-A(-BS) PURY-EP216TSNU-A(-BS) PURY- EP240TNU-A(-BS) PURY-EP240TSNU-A(-BS)
PURY-EP264TSNU-A(-BS)
PURY-EP288TSNU-A(-BS)
PURY-EP312TSNU-A(-BS)
PURY-EP336TSNU-A(-BS)
PURY-EP384TSNU-A(-BS)
PURY-EP432TSNU-A(-BS)

­ ­ ­ ­ ­ PURY-P96TNU-A(-BS) PURY-P96TNU-A(-BS) PURY-P120TNU-A(-BS) PURY- P96TNU-A(-BS) PURY-P120TNU-A(-BS) PURY-P120TNU-A(-BS) PURY-P144TNU-A(-BS) PURY-P120TNU-A(-BS) PURY-P144TNU-A(-BS) PURY-P144TNU-A(-BS) PURY- P168TNU-A(-BS) PURY-P144TNU-A(-BS) PURY-P168TNU-A(-BS) PURY-P168TNU-A(-BS) ­ ­ ­ ­ ­ ­ PURY-EP96TNU-A(-BS) PURY-EP96TNU-A(-BS) ­ PURY-EP120TNU-A(-BS) PURY- EP96TNU-A(-BS) ­ PURY-EP120TNU-A(-BS) PURY-EP120TNU-A(-BS) PURY- EP144TNU-A(-BS) PURY-EP120TNU-A(-BS) PURY-EP144TNU-A(-BS) PURY-EP144TNU-A(-BS) PURY-EP168TNU-A(-BS) PURY-EP144TNU-A(-BS) PURY-EP168TNU-A(-BS) PURY- EP168TNU-A(-BS) PURY-EP192TNU-A(-BS) PURY-EP192TNU-A(-BS) PURY-EP216TNU-A(-BS) PURY-EP216TNU-A(-BS)

Minimum size [mm2 (AWG)]

Power cable

Ground

5.3 (10)

5.3 (10)

8.4 (8)

8.4 (8)

13.3 (6)

13.3 (6)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

13.3 (6)

13.3 (6)

8.4 (8)

8.4 (8)

13.3 (6)

13.3 (6)

13.3 (6)

13.3 (6)

21.2 (4)

21.2 (4)

13.3 (6)

13.3 (6)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

5.3 (10)

5.3 (10)

13.3 (6)

13.3 (6)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

33.6 (2)

33.6 (2)

13.3 (6)

13.3 (6)

13.3 (6)

13.3 (6)

33.6 (2)

33.6 (2)

21.2 (4)

21.2 (4)

13.3 (6)

13.3 (6)

33.6 (2)

33.6 (2)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

21.2 (4)

33.6 (2)

33.6 (2)

33.6 (2)

33.6 (2)

33.6 (2)

33.6 (2)

33.6 (2)

33.6 (2)

Earth leakage breaker
30 A 30 mA or 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 30 A 30 mA or 100 mA 0.1 sec. or less 45 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 80 A 100 mA 0.1 sec. or less 45 A 100 mA 0.1 sec. or less 45 A 100 mA 0.1 sec. or less 90 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 45 A 100 mA 0.1 sec. or less 90 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 70 A 100 mA 0.1 sec. or less 80 A 100 mA 0.1 sec. or less 80 A 100 mA 0.1 sec. or less 90 A 100 mA 0.1 sec. or less 90 A 100 mA 0.1 sec. or less

MCA (A)
22 30 40 48 57 30 30 40 30 40 40 48 40 48 48 57 48 57 57 21 29 38 45 53 60 29 29 67 38 29 75 38 38 45 38 45 45 53 45 53 53 60 60 67 67

MOP (A)
35 45 60 70 90 45 45 60 45 60 60 70 60 70 70 90 70 90 90 30 45 60 70 80 100 45 45 110 60 45 125 60 60 70 60 70 70 80 70 80 80 100 100 110 110

WT09106X04

GB-35

(3) YNU models

Outdoor unit model

Unit combination

PURY-P72YNU-A(-BS)

­

PURY-P96YNU-A(-BS)

­

PURY-P120YNU-A(-BS)

­

PURY-P144YNU-A(-BS)

­

PURY-P168YNU-A(-BS)

­

PURY-P192YSNU-A(-BS)

PURY-P96YNU-A(-BS) PURY-P96YNU-A(-BS)

PURY-P216YSNU-A(-BS)

PURY-P120YNU-A(-BS) PURY-P96YNU-A(-BS)

PURY-P240YSNU-A(-BS)

PURY-P120YNU-A(-BS) PURY-P120YNU-A(-BS)

PURY-P264YSNU-A(-BS)

PURY-P144YNU-A(-BS) PURY-P120YNU-A(-BS)

PURY-P288YSNU-A(-BS)

PURY-P144YNU-A(-BS) PURY-P144YNU-A(-BS)

PURY-P312YSNU-A(-BS)

PURY-P168YNU-A(-BS) PURY-P144YNU-A(-BS)

PURY-P336YSNU-A(-BS)

PURY-P168YNU-A(-BS) PURY-P168YNU-A(-BS)

PURY-EP72YNU-A(-BS)

­

PURY-EP96YNU-A(-BS)

­

PURY-EP120YNU-A(-BS)

­

PURY-EP144YNU-A(-BS)

­

PURY-EP168YNU-A(-BS)

­

PURY-EP192YNU-A(-BS)

­

PURY-EP96YNU-A(-BS) PURY-EP192YSNU-A(-BS)
PURY-EP96YNU-A(-BS)

PURY-EP216YNU-A(-BS)

­

PURY-EP120YNU-A(-BS) PURY-EP216YSNU-A(-BS)
PURY-EP96YNU-A(-BS)

PURY-EP240YNU-A(-BS)

­

PURY-EP120YNU-A(-BS) PURY-EP240YSNU-A(-BS)
PURY-EP120YNU-A(-BS)

PURY-EP144YNU-A(-BS) PURY-EP264YSNU-A(-BS)
PURY-EP120YNU-A(-BS)

PURY-EP144YNU-A(-BS) PURY-EP288YSNU-A(-BS)
PURY-EP144YNU-A(-BS)

PURY-EP168YNU-A(-BS) PURY-EP312YSNU-A(-BS)
PURY-EP144YNU-A(-BS)

PURY-EP168YNU-A(-BS) PURY-EP336YSNU-A(-BS)
PURY-EP168YNU-A(-BS)

PURY-EP192YNU-A(-BS) PURY-EP384YSNU-A(-BS)
PURY-EP192YNU-A(-BS)

PURY-EP216YNU-A(-BS) PURY-EP432YSNU-A(-BS)
PURY-EP216YNU-A(-BS)

Minimum size [mm2 (AWG)]

Power cable

Ground

2.1 (14)

2.1 (14)

3.3 (12)

3.3 (12)

5.3 (10)

5.3 (10)

5.3 (10)

5.3 (10)

8.4 (8)

8.4 (8)

3.3 (12)

3.3 (12)

3.3 (12)

3.3 (12)

5.3 (10)

5.3 (10)

3.3 (12)

3.3 (12)

5.3 (10)

5.3 (10)

5.3 (10)

5.3 (10)

5.3 (10)

5.3 (10)

5.3 (10)

5.3 (10)

5.3 (10)

5.3 (10)

5.3 (10)

5.3 (10)

8.4 (8)

8.4 (8)

5.3 (10)

5.3 (10)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

2.1 (14)

2.1 (14)

3.3 (12)

3.3 (12)

5.3 (10)

5.3 (10)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

3.3 (12)

3.3 (12)

3.3 (12)

3.3 (12)

13.3 (6)

13.3 (6)

5.3 (10)

5.3 (10)

3.3 (12)

3.3 (12)

13.3 (6)

13.3 (6)

5.3 (10)

5.3 (10)

5.3 (10)

5.3 (10)

8.4 (8)

8.4 (8)

5.3 (10)

5.3 (10)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

8.4 (8)

13.3 (6)

13.3 (6)

13.3 (6)

13.3 (6)

Earth leakage breaker
15 A 30 mA or 100 mA 0.1 sec. or less 20 A 30 mA or 100 mA 0.1 sec. or less 25 A 30 mA or 100 mA 0.1 sec. or less 30 A 30 mA or 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 20 A 30 mA or 100 mA 0.1 sec. or less 20 A 30 mA or 100 mA 0.1 sec. or less 25 A 30 mA or 100 mA 0.1 sec. or less 20 A 30 mA or 100 mA 0.1 sec. or less 25 A 30 mA or 100 mA 0.1 sec. or less 25 A 30 mA or 100 mA 0.1 sec. or less 30 A 30 mA or 100 mA 0.1 sec. or less 25 A 30 mA or 100 mA 0.1 sec. or less 30 A 30 mA or 100 mA 0.1 sec. or less 30 A 30 mA or 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 30 A 30 mA or 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 15 A 30 mA or 100 mA 0.1 sec. or less 20 A 30 mA or 100 mA 0.1 sec. or less 30 A 30 mA or 100 mA 0.1 sec. or less 35 A 30 mA or 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 20 A 30 mA or 100 mA 0.1 sec. or less 20 A 30 mA or 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 30 A 30 mA or 100 mA 0.1 sec. or less 20 A 30 mA or 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 30 A 30 mA or 100 mA 0.1 sec. or less 30 A 30 mA or 100 mA 0.1 sec. or less 35 A 30 mA or 100 mA 0.1 sec. or less 30 A 30 mA or 100 mA 0.1 sec. or less 35 A 30 mA or 100 mA 0.1 sec. or less 35 A 30 mA or 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 35 A 30 mA or 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 40 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less

MCA (A) (460 V)
11 15 18 20 28 15 15 18 15 18 18 20 18 20 20 28 20 28 28 10 14 19 22 26 30 14 14 33 19 14 37 19 19 22 19 22 22 26 22 26 26 30 30 33 33

MOP (A) (460 V)
15 20 25 30 40 20 20 25 20 25 25 30 25 30 30 40 30 40 40 15 20 30 35 40 50 20 20 50 30 20 60 30 30 35 30 35 35 40 35 40 40 50 50 50 50

The wire size is the minimum value for metal conduit wiring. If the voltage drops, use a wire that is one size thicker in diameter. Make sure the power- supply voltage does not drop more than 10%. Make sure that the voltage imbalance between the phases is 2% or less.
Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord (design 245 IEC57). For example, use wiring such as YZW.

10-3. Control cable specifications
Transmission cable

Type

2-core shielded cable CVVS, CPEVS, or MVVS

Size

1.25 mm2 (AWG 16)

Length

Max. 200 m (656 ft)

Remarks

The maximum allowable length of transmission cables via outdoor units (both centralized control transmission cables and indoor-outdoor transmission cables) is 500 m (1640 ft)*1. The maximum allowable length of transmission cables from the power supply unit to each outdoor unit or to the system controller is 200 m (656 ft).

  • 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.
  • Ensure shield continuity when extending the transmission cable. *1 When extending the length of the transmission cables to 1000 m (3280 ft), consult your dealer.

Remote controller cable

Type Size
Length

ME remote controller cable

MA remote controller cable

2-core sheathed cable (unshielded) CVV

0.3­1.25 mm2 (AWG 22­16) (0.75­1.25 mm2 (AWG 18­16) if a simple remote controller is connected)

Max. 10 m (32 ft) * If the length exceeds 10 m (32 ft), use a 1.25 mm2 (AWG 16) shielded
cable.

Max. 200 m (656 ft)

WT09106X04

GB-36

GB

10-4. System configuration
Unit code and the maximum number of connectable units

Unit type

Code

Number of connectable units

Outdoor unit

Main unit

OC

­

Sub unit

OS

­

Indoor unit BC controller

IC

Main

BC

Sub

BS

1 to 50 units per OC (depends on the unit model) 1 unit per OC 0 to 11 units per OC

Remote controller

RC

0 to 2 units per group

Transmission booster unit

RP

0 to 2 units per OC

  • A transmission booster may be required depending on the number of connected indoor units. The outdoor unit does not support PAC-SF46EPA but PAC-SF46EPA-G only. * The outdoor units in the same refrigerant circuit are automatically designated as OC and OS. The outdoor units are designated as OC and OS in the order of capacity from large to small (if two
    or more units have the same capacity, in the order of address from small to large).

System configuration example

  • The numbers in the parentheses in the figures below indicate address numbers.
    (1) When ME remote controllers are connected

  • Move the power jumper from CN41 to CN40. *1

  • SW5-1: ON *2

OC
CN41 CN40
(51)
TB3 M1M2 S M1M2
TB7

BC *3
(52)
TB02 M1M2 S

Group 1 IC
(01)
TB5 M1M2S

L1
Group 3 IC
(04)
TB5 M1M2S

BS *3
(55)
TB02 M1M2 S

Group 5

IC

IC

(05)
TB5 M1M2S

(06)
TB5 M1M2S

2

1

  • Leave the power jumper connected to CN41.
  • SW5-1: ON *2

L2

3

AB
(101)

AB

AB

(105) (155)

ME

L3

L4

OC

CN41
(53)
TB3 M1M2 S M1M2
TB7

BC *3
(54)
TB02 M1M2 S

IC
(02)
TB5 M1M2S

IC
(03)
TB5 M1M2S

ME ME
IC (07)
TB5 M1M2S

L5

L6

A BS

4

AB
(103)

ME

Shielded cable Sub remote controller System controller
1 When a power supply unit is not connected to the centralized control transmission cable, move the power jumper from CN41 to CN40 on only one of the outdoor units (except TNU model). When the System controller is connected to TB7 side and TNU outdoor unit model is used, connect a power supply unit to TB7 side. If a power supply unit cannot be used, connect the System controller to TB3 side. Up to three System controllers can be connected to TB3 side.
2 If a system controller is used, set SW5-1 on all of the outdoor units to ON. *3 BC, BS

Maximum allowable length of control cables

Transmission cables via outdoor units Transmission cables
Remote controller cables

L1 + L2 + L3 + L4, L1 + L2 + L3 + L5, L1 + L2 + L6 500 m (1640 ft)
L1, L3 + L4, L3 + L5, L6, L2 + L6 200 m (656 ft)
1, 2, 3, 4 10 m (32 ft) * If the length exceeds 10 m (32 ft), the length that exceeds 10 m (32 ft) needs to be included in the
maximum allowable length of transmission cables above.

*4 When extending the length of the transmission cables to 1000 m (3280 ft), consult your dealer.

WT09106X04

GB-37

(2) When MA remote controllers are connected

  • Move the power jumper from CN41 to CN40. *1
  • SW5-1: ON *2

OC
CN41 CN40
(51)
TB3 M1M2 S M1M2
TB7

BC *3
(52)
TB02 M1M2 S

Group 1 IC
(01)
TB5 TB15 M1M2S 1 2

L1
Group 3 IC
(04)
TB5 TB15 M1M2S 1 2

BS *3
(55)
TB02 M1M2 S

Group 5

IC

IC

(05)
TB5 TB15 M1M2S 1 2

2

(06)

TB5 TB15 M1M2S 1 2

1 3

  • Leave the power jumper connected to CN41.
  • SW5-1: ON *2

L2

OC
CN41
(53)
TB3 M1M2 S M1M2
TB7

AB

MA

L3

L4

BC *3
(54)
TB02 M1M2 S

IC
(02)
TB5 TB15 M1M2S 1 2

IC
(03)
TB5 TB15 M1M2S 1 2

2

2 1

4

AB

AB

MA MA

IC
(07)
TB5 TB15 M1M2S 1 2

L6

1

A BS

AB

MA

Shielded cable Sub remote controller System controller

1 When a power supply unit is not connected to the centralized control transmission cable, move the power jumper from CN41 to CN40 on only one of the outdoor units (except TNU model). When the System controller is connected to TB7 side and TNU outdoor unit model is used, connect a power supply unit to TB7 side. If a power supply unit cannot be used, connect the System controller to TB3 side. Up to three System controllers can be connected to TB3 side.
2 If a system controller is used, set SW5-1 on all of the outdoor units to ON. 3 When a PAR-31MAA is connected to a group, no other MA remote controllers can be connected to the same group. 4 BC, BS

Maximum allowable length of control cables

Transmission cables via outdoor units Transmission cables Remote controller cables

L1 + L2 + L3 + L4, L1 + L2 + L6 500 m (1640 ft) L1, L3 + L4, L6, L2 + L6 200 m (656 ft) m1 + m2, m1 + m2 + m3 + m4 200 m (656 ft)

*5 When extending the length of the transmission cables to 1000 m (3280 ft), consult your dealer.

(3) When a transmission booster unit is connected

M1M2 S TB7

OS (52)

M1M2 S TB7

OC (51)

CN41
TB3 M1 M2

CN41
TB3 M1 M2

BC *3
TB02 M1M2 S

IC
TB5 M1M2 S

IC
TB5 M1M2 S

Ground

RP

IC

TB2

TB3

ABS A BS

TB5 M1M2 S

IC
TB5 M1M2 S

1
L8

AB

AB

ME

ME

Shielded cable

1 Daisy-chain terminals (TB3) on outdoor units together in the same refrigerant system. 2 Leave the power jumper connected to CN41. When connecting a system controller to the transmission line (TB7) for centralized control, refer to (1), (2), or DATA BOOK. *3 BC

Maximum allowable length of control cables

Transmission cables Remote controller cables

L1 + L2 + L3 + L4 + L6 + L7, L1 + L2 + L3 + L4 + L6 + L8, L1 + L2 + L3 + L5, L7 + L6 + L4 + L5, L5 + L4 + L6 + L8 200 m (656 ft)
1, 2 10 m (32 ft) * If the length exceeds 10 m (32 ft), the length that exceeds 10 m (32 ft) needs to be included in the
maximum allowable length of transmission cables above.

WT09106X04

GB-38

10-5. Wiring connections in the control box

Connections must be made securely and without tension on the terminals. – Improperly connected cables may break, overheat, or cause smoke or fire.
10-5-1. Threading power cable through the knockout hole
Open the front panel when performing wiring work. Punch out the knockout holes at the bottom of the front panel or base with a hammer. Use the appropriate knockout hole according to the size of
the power cable, referring to the table below.

(1) When routing the wiring through the front of the unit

(2) When routing the wiring through the bottom of the unit

GB

Fill the gap.

Power cable size (mm2) 2, 3.5, 5.5 8, 14 21, 26, 33 53, 67, 84

Knockout hole to be used Knockout hole 2 Knockout hole 4 Knockout hole 3 Knockout hole 5

Cable strap Power cable Transmission cable
The length of the section after the cable access hole must be at least 1100 mm (43 in). Clamp Ground wire that connects Main Box and Inverter Box

Do not remove the ground wire that connects Main Box and Inverter Box. Install the transmission cable as shown in the figure above so that the cable is long enough for the Main Box to be moved for servicing. If there are any gaps around the power cable and transmission cable, please be sure to fill these in with a suitable material to prevent snow from entering, which may cause damage to the electrical parts, and to protect your hands from direct contact with cables. When putting the power cable through the knockout hole without using a conduit tube, deburr the hole and protect the power cable with protective tape. Use a conduit tube to narrow down the opening if there is a possibility of small animals entering the unit. When taking the conduit tube out from the bottom part of the unit, caulk around the tube opening to prevent water infiltration.

WT09106X04

GB-39

10-5-2. Fixing the cables in place
Route the cables as shown in the figures below. (E)P72 YNU
Main Box
Transmission terminal block Rubber bushing
(for main inverter connection wiring (200 V) and unit wiring
(solenoid coil wiring)) Tie band
(Supplied) Rubber bushing 2
Unit wiring (sensor wiring)
(E)P72 TNU
Main Box
Transmission terminal block Rubber bushing
(for Fan cable and unit wiring (solenoid coil wiring)) Tie band (Supplied) Rubber bushing 2
Unit wiring (sensor wiring)

Inverter Box Power supply terminal block
Cable strap Rubber bushing (for FAN cable) Tie band (Supplied)
Rubber bushing 1
Power cable (not supplied)

Main inverter connection wiring (low voltage)

Fill the gap.

Transmission cable (not supplied) The length of the section after the cable access hole must be at least 1100 mm (43 in).

Inverter Box Power supply terminal block
Cable strap Rubber bushing (for FAN cable) Tie band (Supplied)
Rubber bushing 1
Power cable (not supplied)

Main inverter connection wiring (low voltage)

Fill the gap.

Transmission cable (not supplied)

WT09106X04

GB-40

(E)P96 to 240 YNU
Transmission terminal block Rubber bushing
(for main inverter connection wiring (200 V) and unit wiring
(solenoid coil wiring)) Tie band
(Supplied) Rubber bushing 2
Unit wiring (sensor wiring)
(E)P96 to 240 TNU
Transmission terminal block Rubber bushing
(for Fan cable and unit wiring (solenoid coil wiring)) Tie band (Supplied) Rubber bushing 2
Unit wiring (sensor wiring)
WT09106X04

Power supply terminal block
Cable strap
Tie band (Supplied)
Rubber bushing 1 Power cable (not supplied)

Fill the gap.

Transmission cable (not supplied)

Power supply terminal block
Cable strap
Tie band (Supplied)
Rubber bushing 1 Power cable (not supplied)

Fill the gap.

Transmission cable (not supplied)

GB-41

GB

Take the procedure below.
Thread the power cable through the rubber bushing 1. (See 1 and 2 below.) Thread the unit wiring (sensor wiring) and the transmission cable through the rubber bushing 2. (See 1 and 2 below.) Hold the power cable and the transmission cable in place respectively with the cable straps. Secure each rubber bushing with the supplied tie band. (See *3 below.)

*1 Make sure the cables are not coming out of the rubber bushing cut.

Top view

Wiring

Wiring

Rubber bushing

Cut

Cables are coming out of the rubber bushing.

Rubber bushing (oval part)

Top view

Rubber bushing (oval part)

Wiring Cross-sectional view

*2 When threading the wiring through the rubber bushing, make sure the rubber bushing will not come off the sheet metal on the control box.

Sheet metal on the control box
Rubber bushing

Sheet metal on the control box
Rubber bushing

*3 When tying the supplied tie band around the rubber bushing, make sure to leave no gap between the ends.

Tie band
Overlapped rubber bushing

Approx. 20 mm (13/16 in)

Cut on the rubber bushing

There is a gap in the rubber bushing.

Cut on the rubber bushing

<> When putting the tie band on the rubber bushing, make sure the ends of the rubber bushing overlap each other as shown in the figure at left.

  • If there is a gap, water from snow or rain may enter, resulting in
    equipment damage.

WT09106X04

GB-42

GB

10-5-3. Connecting the cables
(E)P72

-1 -2

L1 L2 L3

(E)P96 to 240

L1 L2 L3

Control box

Power supply terminal block (TB1)

Terminal block for indoor-outdoor transmission cable (TB3)

Terminal block for centralized control transmission cable (TB7)

Terminal block with loose screws

Properly installed terminal block

Spring washers must be parallel to the terminal block.

Power cables, transmission cables Daisy-chain (transmission cables only) Terminal blocks (TB1, TB3, TB7) Make an alignment mark. Install the ring terminals back to back.

Connect the cables respectively to the power supply terminal block and the transmission terminal block. Erroneous connection does not allow the system to operate. Never connect the power cable to the transmission terminal block. If connected, electrical parts will be damaged. Transmission cables should be (5 cm (2 in) or more) apart from the power cable so that it is not influenced by electric noise from the power cable. (Do not put the transmission cables and the power cable in the same conduit.) Follow the tightening torque for each screw type as shown below. Be careful not to use excessive torque as this could damage the screw. Terminal block (TB1, TNU (M8 screw): 10­13.5 [N·m], YNU (M6 screw)): 2.5­2.9 [N·m] Terminal block (TB3, TB7 (M3.5 screw)): 0.82­1.0 [N·m] When tightening the screws, do not push the driver strongly to avoid damaging the screw. Make an alignment mark with a permanent marker across the screw head, washer, and terminal after tightening the screws. Take the procedure below to connect the cables. Connect the indoor-outdoor transmission cable to TB3. If multiple outdoor units are connected to the same refrigerant system, daisy-chain TB3 (M1, M2, ground) on the outdoor units. The indooroutdoor transmission cable to the indoor unit should be connected to TB3 (M1, M2, ground) of only one of the outdoor units. Connect the shield to the ground terminal. Connect the centralized control transmission cables (between the centralized control system and the outdoor units of different refrigerant systems) to TB7. If multiple outdoor units are connected to the same refrigerant system, daisy- chain TB7 (M1, M2, S) on all outdoor units.*1 Connect the shield to the S terminal. *1 If TB7 on the outdoor units in the same refrigerant system are not daisy-chained, connect the centralized control transmission cable to TB7 on the OC. If the OC is out of order, or if centralized control is being conducted during a power supply shut-off, daisy-chain TB7 on the OC and OS. (In the case that the outdoor unit whose power jumper CN41 on the control board has been replaced with CN40 is out of order or the power is shut-off, centralized control will not be conducted even when TB7 is daisy-chained.) When a power supply unit is not connected to the centralized control transmission cable, move the power jumper from CN41 to CN40 on only one of the outdoor units (except TNU model). When the System controller is connected to TB7 side and TNU outdoor unit model is used, connect a power supply unit to TB7 side. If a power supply unit cannot be used, connect the System controller to TB3 side. Up to three System controllers can be connected to TB3 side. On the outdoor unit whose power jumper was moved from CN41 to CN40, short circuit the S terminal and the ground terminal. Connect terminals M1 and M2 of the transmission terminal block on the indoor unit that has the lowest address in the group to the terminal block on the remote controller. When a system controller is connected, set SW5-1 on all outdoor units to ON. Fix the cables securely in place with the cable strap below the terminal block.

WT09106X04

GB-43

10-6. Address setting
Set the address setting switch as follows.

Indoor unit (Main, Sub)

Outdoor unit (OC, OS)
BC controller
ME remote controller MA remote controller

Main
Sub Main Sub

Address setting method
Assign the lowest address to the main indoor unit in the group, and assign sequential addresses to the rest of the indoor units in the same group. In an R2 system with a sub BC controller, make the settings for the indoor units in the following order. (Set the addresses
so that the addresses of are smaller than those of , and the addresses of are smaller than those of .) Indoor units that are connected to the main BC controller or main HBC controller Indoor units that are connected to sub BC controller 1 Indoor units that are connected to sub BC controller 2
Assign sequential addresses to the outdoor units in the same refrigerant system. To set the address to 100, the address setting switch must be set to 50.
Assign an address that equals the address of the outdoor unit plus 1. If the address that is assigned to the main BC controller overlaps any of the addresses that are assigned to the outdoor units or to the sub BC controller, use a different, unused address within the setting range. To set the address to 100, the address setting switch must be set to 50.
Assign an address that equals the lowest address of the indoor units that are connected to the sub BC controller plus 50. To set the address to 100, the address setting switch must be set to 50.
Assign an address that equals the address of the main indoor unit in the group plus 100.
Assign an address that equals the address of the main indoor unit in the group plus 150.
Address setting is not required. (The Main/Sub setting is required.)

Address
01 to 50
51 to 100 51 to 100
51 to 100 101 to 150 151 to 200
­

  • The outdoor units in the same refrigerant circuit are automatically designated as OC and OS. The outdoor units are designated as OC and OS in the order of capacity from large to small (if two or more units have the same capacity, in the order of address from small to large).
  • Make indoor unit group settings from remote controllers after turning on the power to all units.

Address setting switch (Outdoor units)

WT09106X04

GB-44

GB

Test run

11-1. Before a test run
After the wiring work has been completed, measure the insulation resistance, and make sure that it reads at least 1 M. – Failure to do so may result in electric leakage, malfunction, or fire.
Turn on the power at least 12 hours before starting operation. Keep the power turned on throughout the operating season. – Insufficient energizing will result in malfunction.
Before performing a test run, turn off the power to the outdoor unit, and disconnect the power cable from the power supply terminal block to measure the insulation resistance.
Measure the insulation resistance between the power supply terminal block and the earth with a 500 V ohmmeter, and make sure it is at least 1 M. If the insulation resistance is 1 M or above, connect the power cable to the power supply terminal, and turn on the power at least 12 hours
before starting operation. If the insulation resistance is below 1 M, do not operate the unit, and check the compressor for a earth fault. While the unit is turned on, the compressor will remain energized even when it is stopped. The insulation resistance between the power supply terminal block and the earth may drop to near 1 M immediately after installation or when
the main power to the unit has been turned off for a long time because of the stagnation of refrigerant in the compressor. By turning on the main power and energizing the unit for 12 hours or longer, the refrigerant in the compressor will evaporate and the insulation
resistance will rise. Do not apply an ohmmeter voltage to the terminal block for transmission cables. Doing so will damage the control board. Do not measure the insulation resistance of the transmission terminal block of the unit remote controller. Check for refrigerant leakage and for loose power cables and transmission cables. Check that the high-pressure side and low- pressure side service valves are fully open. Tighten the valve caps. Check the phase order of the power supply and the interphase voltage. If the voltage is out of the ±10% range, or if the voltage imbalance is more
than 2%, discuss the countermeasure with the customer. When a transmission booster unit is connected, turn on the transmission booster unit before turning on the outdoor unit. If the outdoor unit is
turned on first, the refrigerant circuit connection information will not be properly verified. If the outdoor unit is turned on first, turn on the transmission booster unit and then power reset the outdoor unit. When a power supply unit is connected to the centralized control transmission cable, or when power is supplied from a system controller with a power-supply function, perform a test run with the power supply unit being energized. Leave the power jumper connected to CN41. When power is turned on or after power recovery, performance may degrade for approximately 30 minutes.

WT09106X04

GB-45

11-2. Function setting
Make function settings by setting the dipswitches SW4, SW6, and SWP3 on the main board. Write down the switch settings on the electrical wiring diagram label on the control box front panel for future reference when the control box needs to be replaced. Take the following steps to make temperature unit (ºC or ºF) settings.

Set the 10th bit of SW6 to ON.

Set SW4 as shown in the table below to select the setting item No.921. (The setting item No. will be displayed on LED1.)

Press SWP3 for two seconds or longer to change the settings. (The settings can be checked on LED3.)

Setting item No. 12

Temperature unit setting

921

10

1 Make the SW4 setting after the unit is energized. 2 This will blink while the system is starting up.

SW4 0: OFF, 1: ON *1 345678
011001

9 10 11

Setting (LED3 display) *2

Unlit

Lit

ºC

ºF

Make various function settings by setting SW5 and SW6, referring to the table below.

SW5-1
SW5-2 SW5-3 SW5-4 SW5-5 SW5-6 SW5-7 SW5-8

Setting content
Centralized control switch
Deletion of connection information ­ ­ ­ ­ ­ ­

Setting

OFF

ON

Without connection to the centralized controller

With connection to the centralized controller

Normal control

Deletion

Preset before shipment

SW6-1

Setting content ­

Setting

OFF

ON

­

­

SW6-2 SW6-3 SW6-4 SW6-5 SW6-6 SW6-7 SW6-8

­ ­
High static pressure setting
­ Low-noise mode selection Selection of Low-noise or Demand

­ ­
Refer to *1.
­ Performance priority
Low-noise (Night)

­ ­
Refer to *1.
­ Low-noise priority
Demand

SW6-9 SW6-10

Selection of Diagnostic display or Function detail setting

Refer to *2.

Refer to *2.

  • Do not change the factory settings of SW5-3 through SW5-8. Unless otherwise specified, leave the switch to OFF where indicated by “­,” which may be set to OFF for a reason. 1

SW6-4: ON SW6-4: OFF *2

SW6-5: ON 80 Pa 30 Pa

SW6-5: OFF 60 Pa 0 Pa

SW6-9: ON SW6-9: OFF

SW6-10: ON LED (round type) No. 0 to 1023 Function setting No. 0 to 1023

SW6-10: OFF LED (7seg) No. 1024 to 2047
LED (7seg) No. 0 to 1023

Switch setting timing
Before being energized Before being energized
­ ­ ­ ­ ­ ­
Switch setting timing
­ ­ ­
Before being energized
­ Any time after being energized
Before being energized
Any time after being energized

11-3. Operation characteristics in relation to the refrigerant charge
It is important to have a clear understanding of the characteristics of refrigerant and the operation characteristics of air conditioners before attempting to adjust the refrigerant charge in a given system. During cooling operation, the amount of refrigerant in the accumulator is the smallest when all indoor units are in operation. During heating operation, the amount of refrigerant in the accumulator is the largest when all indoor units are in operation. Refrigerant undercharge creates a tendency for the discharge temperature to rise. Changing the amount of refrigerant in the system while there is refrigerant in the accumulator has little effect on the discharge temperature. The higher the high pressure level, the more likely it is for the discharge temperature to rise. The lower the low pressure level, the more likely it is for the discharge temperature to rise. When the amount of refrigerant in the system is adequate, the compressor shell temperature is 10 to 60ºC (50 to 140ºF) higher than the low-
pressure saturation temperature. If the temperature difference between the compressor shell temperature and low-pressure saturation temperature is 5ºC (41ºF) or less, refrigerant overcharge is suspected.

WT09106X04

GB-46

GB

11-4. Operation check
The following symptoms are normal and do not indicate a problem.

Events The auto vane automatically switches air flow direction.

Display on remote controller
Normal display

The fan speed automatically changes during heating operation. The fan stops during heating operation. The fan keeps running after the unit has stopped. At the beginning of heating operation, the fan cannot be manually set.

Normal display
“Defrost” No display “Stand By”

When the main power is turned on, the display as shown “HO” or “PLEASE

right appears on the remote controller for about five

WAIT” blinks.

minutes.

The drain pump keeps running after the unit has stopped.

No display

Cause
The auto vane may switch over to horizontal air flow operation from vertical air flow operation in cooling mode if the vertical air flow operation has been running for one hour. At defrost in heating mode or immediately after heating start-up/shutdown, the auto vane automatically switches to horizontal air flow for a short time. The fan operates at Very Low speed when the thermostat is turned off, and automatically changes over to the preset speed according to the timer setting or refrigerant temperature when the thermostat is turned on. The fan remains stopped during the defrost cycle. After the unit has stopped during heating operation, the fan operates for one minute to exhaust heat. The fan operates at Very Low speed for five minutes after heating operation starts or until the refrigerant temperature reaches 35°C (95°F), then the fan operates at Low speed for two minutes, and finally the fan operates at the preset speed. The system is starting up. Wait until “HO” or “PLEASE WAIT” stops blinking and goes off then try again.
The drain pump remains in operation for three minutes after the unit in cooling mode has stopped. The drain pump goes into operation when drain water is detected, even when the unit is stopped.

The indoor unit emits noise when switching from heating to cooling and vice versa.
Immediately after startup, the indoor unit emits the sound of liquid flowing.
In a short while after the outdoor unit stops, the unit makes a clicking sound.

Normal display Normal display No display

Drain water comes out of the outdoor unit from the bottom part of the heat exchanger.

No display

This is a normal sound of the refrigerant circuit operating properly.
Unstable flow of the heating medium produces a sound. This is temporary and does not imply a problem.
After the unit stops and before the unit performs pressure equalization, the pressure difference temporarily becomes small and the check valve may vibrate and make a sound. This is temporary and does not imply a problem. This ensures proper drainage of drain water in case the drain water freezes and remains in the outdoor unit during the heating operation at low ambient temperature.

Inspection and maintenance

Only qualified personnel must relocate or repair the unit. Do not attempt to disassemble or alter the unit.
– Failure to do so will result in refrigerant leakage, water leakage, serious injury, electric shock, or fire.
While the unit is turned on, the compressor will remain energized even when it is stopped. Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less. (It takes about 10 minutes to discharge electricity after the power supply is turned off.)
Control boxes house high-voltage and high-temperature electrical parts. They may still remain energized or hot after the power is turned off. Perform the service after disconnecting the connector (RYFAN1 and RYFAN2).
(To plug or unplug connectors, check that the outdoor unit fan is not rotating and that the voltage of capacitor in the main circuit is 20 VDC or below. The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.) Reconnect the connector (RYFAN1 and RYFAN2) after servicing.
Unit components may be damaged after long use of the unit, resulting in a performance drop or the unit becoming a safety hazard. To use the unit safely and maximize its life, it is recommended that a maintenance contract with a dealer or qualified personnel be signed. If the contract is signed, service technicians will periodically inspect the unit to identify any damage at an early stage, and take appropriate measures.
Please contact local MITSUBISHI ELECTRIC sales office for maintenance frequency and tasking recommendations. When the outdoor unit is installed on the waterproof sheet, the sheet may become dirty due to the copper component seeped out from the unit. In
this case, installing a drain pan for centralized drainage is recommended.

WT09106X04

GB-47

Rating plate information

(1) TNU models
Model Unit combination Refrigerant (R410A) Allowable pressure (Ps) Net weight
Model Unit combination Refrigerant (R410A) Allowable pressure (Ps) Net weight
Model Unit combination Refrigerant (R410A) Allowable pressure (Ps) Net weight
Model Unit combination Refrigerant (R410A) Allowable pressure (Ps) Net weight
Model Unit combination Refrigerant (R410A) Allowable pressure (Ps) Net weight

PURY-P72TNU-A(-BS) ­
5.2 kg [11 lbs 7 oz] 219 kg [483 lbs]

PURY-P96TNU-A(-BS)

PURY-P120TNU-A(-BS)

PURY-P144TNU-A(-BS)

­

­

­

8.0 kg [17 lbs 10 oz]

8.0 kg [17 lbs 10 oz]

10.8 kg [23 lbs 12 oz]

HP: 4.15 MPa [601 psi], LP: 2.21 MPa [320 psi]

261 kg [576 lbs]

271 kg [598 lbs]

293 kg [646 lbs]

PURY-P192TSNU-A(-BS)

PURY-P216TSNU-A(-BS)

PURY-P96TNU-A(-BS)

PURY-P96TNU-A(-BS)

PURY-P120TNU-A(-BS)

PURY-P96TNU-A(-BS)

8.0 kg [17 lbs 10 oz]

8.0 kg [17 lbs 10 oz]

8.0 kg [17 lbs 10 oz]

8.0 kg [17 lbs 10 oz]

HP: 4.15 MPa [601 psi], LP: 2.21 MPa [320 psi]

261 kg [576 lbs]

261 kg [576 lbs]

271 kg [598 lbs]

261 kg [576 lbs]

PURY-P240TSNU-A(-BS)

PURY-P264TSNU-A(-BS)

PURY-P120TNU-A(-BS)

PURY-P120TNU-A(-BS)

PURY-P144TNU-A(-BS)

PURY-P120TNU-A(-BS)

8.0 kg [17 lbs 10 oz]

8.0 kg [17 lbs 10 oz]

10.8 kg [23 lbs 12 oz]

8.0 kg [17 lbs 10 oz]

HP: 4.15 MPa [601 psi], LP: 2.21 MPa [320 psi]

271 kg [598 lbs]

271 kg [598 lbs]

293 kg [646 lbs]

271 kg [598 lbs]

PURY-P288TSNU-A(-BS)

PURY-P312TSNU-A(-BS)

PURY-P144TNU-A(-BS)

PURY-P144TNU-A(-BS)

PURY-P168TNU-A(-BS)

PURY-P144TNU-A(-BS)

10.8 kg [23 lbs 12 oz]

10.8 kg [23 lbs 12 oz]

10.8 kg [23 lbs 12 oz]

10.8 kg [23 lbs 12 oz]

HP: 4.15 MPa [601 psi], LP: 2.21 MPa [320 psi]

293 kg [646 lbs]

293 kg [646 lbs]

335 kg [739 lbs]

293 kg [646 lbs]

PURY-P336TSNU-A(-BS)

PURY-P168TNU-A(-BS)

PURY-P168TNU-A(-BS)

10.8 kg [23 lbs 12 oz]

10.8 kg [23 lbs 12 oz]

HP: 4.15 MPa [601 psi], LP: 2.21 MPa [320 psi]

335 kg [739 lbs]

335 kg [739 lbs]

PURY-P168TNU-A(-BS) ­
10.8 kg [23 lbs 12 oz] 335 kg [739 lbs]

Model Unit combination Refrigerant (R410A) Allowable pressure (Ps) Net weight
Model Unit combination Refrigerant (R410A) Allowable pressure (Ps) Net weight
Model Unit combination Refrigerant (R410A) Allowable pressure (Ps) Net weight
Model Unit combination Refrigerant (R410A) Allowable pressure (Ps) Net weight
Model Unit combination Refrigerant (R410A) Allowable pressure (Ps) Net weight
Model Unit combination Refrigerant (R410A) Allowable pressure (Ps) Net weight

PURY-EP72TNU-A(-BS) ­
5.2 kg [11 lbs 7 oz] 235 kg [519 lbs]

PURY-EP96TNU-A(-BS)

PURY-EP120TNU-A(-BS)

PURY-EP144TNU-A(-BS)

­

­

­

8.0 kg [17 lbs 10 oz]

8.0 kg [17 lbs 10 oz]

10.8 kg [23 lbs 12 oz]

HP: 4.15 MPa [601 psi], LP: 2.21 MPa [320 psi]

278 kg [613 lbs]

282 kg [622 lbs]

308 kg [680 lbs]

PURY-EP168TNU-A(-BS) ­
10.8 kg [23 lbs 12 oz] 352 kg [777 lbs]

PURY-EP192TNU-A(-BS) ­
11.8 kg [26 lbs 1 oz] 402 kg [887 lbs]

PURY-EP192TSNU-A(-BS)

PURY-EP96TNU-A(-BS)

PURY-EP96TNU-A(-BS)

8.0 kg [17 lbs 10 oz]

8.0 kg [17 lbs 10 oz]

HP: 4.15 MPa [601 psi], LP: 2.21 MPa [320 psi]

278 kg [613 lbs]

278 kg [613 lbs]

PURY-EP216TNU-A(-BS) ­
11.8 kg [26 lbs 1 oz] 402 kg [887 lbs]

PURY-EP216TSNU-A(-BS)

PURY-EP240TNU-A(-BS)

PURY-EP240TSNU-A(-BS)

PURY-EP120TNU-A(-BS)

PURY-EP96TNU-A(-BS)

­

PURY-EP120TNU-A(-BS)

PURY-EP120TNU-A(-BS)

8.0 kg [17 lbs 10 oz]

8.0 kg [17 lbs 10 oz]

11.8 kg [26 lbs 1 oz]

8.0 kg [17 lbs 10 oz]

8.0 kg [17 lbs 10 oz]

HP: 4.15 MPa [601 psi], LP: 2.21 MPa [320 psi]

282 kg [622 lbs]

278 kg [613 lbs]

402 kg [887 lbs]

282 kg [622 lbs]

282 kg [622 lbs]

PURY-EP264TSNU-A(-BS)

PURY-EP288TSNU-A(-BS)

PURY-EP144TNU-A(-BS)

PURY-EP120TNU-A(-BS)

PURY-EP144TNU-A(-BS)

PURY-EP144TNU-A(-BS)

10.8 kg [23 lbs 12 oz]

8.0 kg [17 lbs 10 oz]

10.8 kg [23 lbs 12 oz]

10.8 kg [23 lbs 12 oz]

HP: 4.15 MPa [601 psi], LP: 2.21 MPa [320 psi]

308 kg [680 lbs]

282 kg [622 lbs]

308 kg [680 lbs]

308 kg [680 lbs]

PURY-EP312TSNU-A(-BS)

PURY-EP336TSNU-A(-BS)

PURY-EP168TNU-A(-BS)

PURY-EP144TNU-A(-BS)

PURY-EP168TNU-A(-BS)

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