Mitsubishi PEFY-P25VMA-E, PEFY-P50VMA-E, PEFY-P40VMA-E, PEFY-P32VMA-E, PEFY-P63VMA-E Installation Manual

Air-Conditioners
INDOOR UNIT

PEFY-P20,25,32,40,50,63,71,80,100,125,140VMA-E
PEFY-P20,25,32,40,50,63,71,80,100,125,140VMAL-E

GBDFEINLP

INSTALLATIONSHANDBUCH

Zum sicheren und ordnungsgemäßen Gebrauch der Klimageräte das Installationshandbuch gründlich durchlesen.

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.

INSTALLATION MANUAL

For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner unit.

MANUALE DI INSTALLAZIONE

Per un uso sicuro e corretto, leggere attentamente questo manuale di installazione prima di installare il condizionatore d’aria.

INSTALLATIEHANDLEIDING

Voor een veilig en juist gebruik moet u deze installatiehandleiding grondig doorlezen voordat u de airconditioner installeert.

MANUAL DE INSTALAÇÃO

Para segurança e utilização correctas, leia atentamente este manual de instalação antes de instalar a unidade de ar condicionado.

GRRUTR

ΕΓΧΕΙΡΙΔΙΟ ΟΔΗΓΙΩΝ ΕΓΚΑΤΑΣΤΑΣΗΣ

Για ασφάλεια και σωστή χρήση, παρακαλείστε διαβάσετε προσεχτικά αυτό το εγχειρίδιο εγκατάστασης πριν αρχίσετε την εγκατάσταση της
μονάδας κλιματισμού.

РУКОВОДСТВО ПО УСТАНОВКЕ

Для осторожного и правильного использования прибора необходимо тщательно ознакомиться с данным руководством по установке
до выполнения установки кондиционера.

MONTAJ ELKİTABI

Emniyetli ve doğru biçimde nasıl kullanılacağını öğrenmek için lütfen klima cihazını monte etmeden önce bu elkitabını dikkatle okuyunuz.

SVHGPO CZ

PŘÍRUČKA K INSTALACI

V zájmu bezpečného a správného používání si před instalací klimatizační jednotky důkladně pročtěte tuto příručku k instalaci.

NÁVOD NA INŠTALÁCIU

Pre bezpečné a správne použitie si pred inštalovaním klimatizačnej jednotky, prosím, starostlivo prečítajte tento návod na inštaláciu.

TELEPÍTÉSI KÉZIKÖNYV

A biztonságos és helyes használathoz, kérjük, olvassa el alaposan ezt a telepítési kézikönyvet, mielőtt telepítené a légkondicionáló egységet.

PODRĘCZNIK INSTALACJI

W celu bezpiecznego i poprawnego korzystania należy przed zainstalowaniem klimatyzatora dokładnie zapoznać się z niniejszym podręcznikiem instalacji.

SLSWHRBGRO

PRIROČNIK ZA NAMESTITEV

Za varno in pravilno uporabo pred namestitvijo klimatske naprave skrbno preberite priročnik za namestitev.

INSTALLATIONSHANDBOK

Läs den här installationshandboken noga innan luftkonditioneringsenheten installeras, för säker och korrekt användning.

PRIRUČNIK ZA UGRADNJU

Radi sigurne i ispravne uporabe, temeljito pročitajte ovaj priručnik prije ugradnje unutarnje jedinice.

РЪКОВОДСТВО ЗА МОНТАЖ

За безопасна и правилна употреба, моля, прочетете внимателно това ръководство преди монтажа на климатизатора.

MANUAL CU INSTRUCŢIUNI DE INSTALARE

Pentru o utilizare corectă şi sigură, vă rugăm să citiţi cu atenţie acest manual înainte de a instala unitatea de aer condiţionat.

2

3

3.2

[Fig. 3.2.1]

4

4.1

[Fig. 4.1.1]

A Refrigerant pipe (liquid pipe)
B Refrigerant pipe (gas pipe)
C Drain pipe (O.D. ø32)
D Drain pipe (O.D. ø32, spontaneous draining)

A Unit body
B Lifting machine

C Nuts (field supply)
D Washers (field supply)
E M10 hanging bolt (field supply)

5

5.2

[Fig. 5.1.1] [Fig. 5.1.2] [Fig. 5.2.1]

5.1

6

6.2

[Fig. 6.2.1]

A Center of gravity

A Access door
B Electrical parts box
C Air inlet
D Air outlet
E Ceiling surface
F Service space (viewed from the side)
G Service space (viewed from the direction of arrow)

1 600 mm or more

2 100 mm or more

3 20 mm or more

4 300 mm or more

A Indoor unit’s bottom surface

YX

LW

A

Z

A

C

D

C

E

D

B

C

D

A

F

G

3

4

E

A

50~150 450

450

49

625

777

20

100

23

C
B
A

D

C

E

250

1

2

B

A

137 67

239

357

122

33

41

217

C

A

B

D

Model
PEFY-P20,25,32VMA(L)-E
PEFY-P40,50VMA(L)-E
PEFY-P63,71,80VMA(L)-E
PEFY-P100,125VMA(L)-E
PEFY-P140VMA(L)-E

A
700
900

1100
1400
1600

B
754
954

1154
1454
1654

C

800
1000
1200
1500
1700

D
660
860

1060
1360
1560

E

800
1000
1200
1500
1700

(mm)

3

A Cut here
B Remove brazed cap

A

A

E

C

F

B

D

A Thermal insulation
B Pull out insulation
C Wrap with damp cloth
D Return to original position
E Ensure that there is no gap here
F Wrap with insulating tape

7

[Fig. 7.1.1]

7.1

[Fig. 7.1.3]

B

J

O

N

F

Max. 300mm

[Fig. 7.2.1]

Correct piping

Wrong piping

A Insulation (9 mm or more)
B Downward slope (1/100 or more)
C Support metal
K Air bleeder
L Raised
M Odor trap

Grouped piping

D O. D. ø32 PVC TUBE
E Make it as large as possible. About 10 cm.
F Indoor unit
G Make the piping size large for grouped piping.
H Downward slope (1/100 or more)
I O. D. ø38 PVC TUBE for grouped piping.

(9 mm or more insulation)

J Up to 550 mm
N Drain hose (accessory)
O Horizontal or slightly upgradient

7.2

[Fig. 7.2.2]

C

B

A

L

D

D

D

E

K

M

B

H

I

Max. 20m

1.5-2m

G

F

FF

B

CD D

G

F

E

H

A

3235 25

A Indoor unit
B Tie band (accessory)
C Visible part
D Insertion margin
E Drain hose (accessory)
F Drain pipe (O.D. ø32 PVC TUBE, field supply)
G Insulating material (field supply)
H Tie band (accessory)

A

[Fig. 7.1.2]

A Cool by a wet cloth

A Indoor unit
B Tie band (accessory)
C Band fixing part
D Insertion margin
E Drain hose (accessory)
F Drain pipe (O.D. ø32 PVC TUBE, field supply)
G Insulating material (field supply)

C

D

G

F

E

B

525

A

[Fig. 7.2.3]

4

8

[Fig. 8.0.1]

9

9.1

[Fig. 9.1.1] [Fig. 9.2.1]

[Fig. 9.2.2]

TB5 TB5

SM1M2 SM1M2

TB3

M1M2

AA

B

CC

TB5 TB15 TB5 TB15

SM1M2 SM1M2

TB3

M1M2 21 21

AA

B

CC

A Ter minal block for indoor

transmission cable

B Terminal block for outdoor

transmission cable

C Remote controller

9.2

[Fig. 7.3.1]

7.3

A Insert pump's end 2 to 4 cm.
B Remove the water supply port.
C About 2500 cc
D Water
E Filling port
F Screw

[Fig. 8.0.2]

SWE

[Fig. 7.3.2]

[Fig. 8.0.3]

[Fig. 8.0.4]

<Indoor controller board>

A

B

F

C

D

E

A

B

G

F

A

A
B
C
D
E
F
G

CE

Duct

Air inlet

Access door

Canvas duct

Ceiling surface

Air outlet

Leave distance
enough to pre­vent short cycle

<A> In case of rear inlet

D

A

B

G

C

E

A

F

<B> In case of bottom inlet

D

A

B

A Filter
B Bottom plate

C

D

A Ground-fault interrupter
B Local switch/Wiring breaker
C Indoor unit

AB

C

PE

~220 -240V

5

F Use PG bushing to keep the weight of the cable and external force from being

applied to the power supply terminal connector. Use a cable tie to secure the
cable.

G Power source wiring
H Use ordinary bushing
I Transmission wiring

J Ter minal block for power source
K Ter minal block for indoor transmission
L Ter minal block for remote controller

A Ter minal block
B Round terminal
C Shield wire
D The earth wire from two cables are connected together to the S terminal. (Dead-end connection)
E Insulation tape (To keep the ear th wire of the shielded cable from coming in contact with the transmis-

sion terminal)

9.3

[Fig. 9.3.3]

[Fig. 9.3.4]

[Fig. 9.3.5]

C Ter minal box
D Knockout hole
E Remove

A Screw holding cover (1pc)
B Cover

[Fig. 9.3.1] [Fig. 9.3.2]

A Non-polarized
B TB15
C Remote Controller
D TB5

[Fig. 9.2.3] [Fig. 9.2.4]

2

S

M2

M1

A

B

D

1

DC10~13V

AB
12

L

N

C

D

A

S

M2

M1

B

1

2

L

N

DC24~30V

(A, B)

12

C

M2 SM1

A

B

C

E

D

9.5

[Fig. 9.5.1]

<Indoor controller board>

9.2

A

B

C

D

E

H

I

F

G

J

L

K

SWA

SW5

SW14

SW12

SWC

SW11

6

DFEINLPGRRUTR

CZSVHGPO

GB

Contents

1. Safety precautions ...................................................................................... 6

1.1. Before installation and electric work .......................................... 6

1.2. Precautions for devices that use R410A refrigerant .................. 6

1.3. Before getting installed .............................................................. 7

1.4. Before getting installed (moved) - electrical work ...................... 7

1.5. Before starting the test run ........................................................ 7

2. Indoor unit accessories ............................................................................... 7

3. Selecting an installation site ....................................................................... 7

3.1. Install the indoor unit on a ceiling strong enough to sustain

its weight ................................................................................... 8

3.2. Securing installation and service space .................................... 8

3.3. Combining indoor units with outdoor units ................................ 8

4. Fixing hanging bolts .................................................................................... 8

4.1. Fixing hanging bolts .................................................................. 8

5. Installing the unit ......................................................................................... 8

5.1. Hanging the unit body ............................................................... 8

5.2. Confirming the unit’s position and fixing hanging bolts ............. 8

6. Refrigerant pipe and drain pipe specifications ............................................ 8

6.1. Refrigerant pipe and drain pipe specifications .......................... 9

6.2. Refrigerant pipe, drain pipe ....................................................... 9

7. Connecting refrigerant pipes and drain pipes ............................................. 9

7.1. Refrigerant piping work ............................................................. 9

7.2. Drain piping work ....................................................................... 9

7.3. Confirming drain discharge ..................................................... 10

8. Duct work .................................................................................................. 10

9. Electrical wiring .......................................................................................... 11

9.1. Power supply wiring ................................................................. 11

9.2. Connecting remote controller, indoor and outdoor

transmission cables ................................................................. 12

9.3. Connecting electrical connections ........................................... 12

9.4. External I/O specifications ....................................................... 12

9.5. Selecting the external static pressure ..................................... 12

9.6. Setting addresses .................................................................... 12

9.7. Sensing room temperature with the built-in sensor in

a remote controller .................................................................. 12

9.8. Changing the power voltage setting ........................................ 12

1. Safety precautions

1.1. Before installation and electric work

Before installing the unit, make sure you read all the “Safety
precautions”.

The “Safety precautions” provide very important points re­garding safety. Make sure you follow them.

Symbols used in the text

Warning:

Describes precautions that should be observed to prevent danger of injury
or death to the user.

Caution:

Describes precautions that should be observed to prevent damage to the
unit.

Symbols used in the illustrations

: Indicates an action that must be avoided.

: Indicates that important instructions must be followed.

: Indicates a part which must be grounded.

: Indicates that caution should be taken with rotating parts. (This symbol is

displayed on the main unit label.) <Color: yellow>

: Beware of electric shock (This symbol is displayed on the main unit label.)

<Color: yellow>

Warning:

Carefully read the labels affixed to the main unit.

Warning:

• Ask the dealer or an authorized technician to install the air conditioner.

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

• Install the air unit at a place that can withstand its weight.

- Inadequate strength may cause the unit to fall down, resulting in injuries.

• Use the specified cables for wiring. Make the connections securely so
that the outside force of the cable is not applied to the terminals.

- Inadequate connection and fastening may generate heat and cause a fire.

• Prepare for typhoons and other strong winds and earthquakes and in­stall the unit at the specified place.

- Improper installation may cause the unit to topple and result in injury.

• Always use an air cleaner, humidifier, electric heater, and other accesso­ries specified by Mitsubishi Electric.

- Ask an authorized technician to install the accessories. Improper installation

by the user may result in water leakage, electric shock, or fire.

• Never repair the unit. If the air conditioner must be repaired, consult the
dealer.

- If the unit is repaired improperly, water leakage, electric shock, or fire may

result.

• Do not touch the heat exchanger fins.

- Improper handling may result in injury.

• When handling this product, always wear protective equipment.
EG: Gloves, full arm protection namely boiler suit, and safety glasses.

- Improper handling may result in injury.

• If refrigerant gas leaks during installation work, ventilate the room.

- If the refrigerant gas comes into contact with a flame, poisonous gases will

be released.

• Install the air conditioner according to this Installation Manual.

- If the unit is installed improperly, water leakage, electric shock, or fire may
result.

• Have all electric work done by a licensed electrician according to “Elec­tric Facility Engineering Standard” and “Interior Wire Regulations”and
the instructions given in this manual and always use a special circuit.

- If the power source capacity is inadequate or electric work is performed im-

properly, electric shock and fire may result.

• Keep the electric parts away from water (washing water etc.).

- It might result in electric shock, catching fire or smoke.

• Securely install the outdoor unit terminal cover (panel).

- If the terminal cover (panel) is not installed properly, dust or water may enter

the outdoor unit and fire or electric shock may result.

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

- Doing so may cause the unit or pipes to burst, or result in explosion or fire

during use, during repair, or at the time of disposal of the unit.

- It may also be in violation of applicable laws.

- MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for

malfunctions or accidents resulting from the use of the wrong type of refrigerant.

• If the air conditioner is installed in a small room, measures must be taken
to prevent the refrigerant concentration from exceeding the safety limit
even if the refrigerant should leak.

- Consult the dealer regarding the appropriate measures to prevent the safety

limit from being exceeded. Should the refrigerant leak and cause the safety
limit to be exceeded, hazards due to lack of oxygen in the room could result.

• When moving and reinstalling the air conditioner, consult the dealer or
an authorized technician.

- If the air conditioner is installed improperly, water leakage, electric shock, or

fire may result.

• After completing installation work, make sure that refrigerant gas is not
leaking.

- If the refrigerant gas leaks and is exposed to a fan heater, stove, oven, or

other heat source, it may generate noxious gases.

• Do not reconstruct or change the settings of the protection devices.

- If the pressure switch, thermal switch, or other protection device is shorted

and operated forcibly, or parts other than those specified by Mitsubishi Elec­tric are used, fire or explosion may result.

• To dispose of this product, consult your dealer.

• Do not use a leak detection additive.

1.2. Precautions for devices that use R410A

refrigerant

Caution:

• Do not use the existing refrigerant piping.

- The old refr igerant and refrigerator oil in the existing piping contains a large amount

of chlorine which may cause the refrigerator oil of the new unit to deteriorate.

• Use refrigerant piping made of C1220 (Cu-DHP) phosphorus deoxidized
copper as specified in the JIS H3300 “Copper and copper alloy seamless
pipes and tubes”. In addition, be sure that the inner and outer surfaces of
the pipes are clean and free of hazardous sulphur, oxides, dust/dirt, shav­ing particles, oils, moisture, or any other contaminant.

- Contaminants on the inside of the refrigerant piping may cause the refriger-

ant residual oil to deteriorate.

• Store the piping to be used during installation indoors and keep both
ends of the piping sealed until just before brazing. (Store elbows and
other joints in a plastic bag.)

- If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and

compressor trouble may result.

7

DFEINLPGRRUTRCZSVHGPO

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2. Indoor unit accessories

The unit is provided with the following accessories:

3. Selecting an installation site

• Select a site with sturdy fixed surface sufficiently durable against the weight of
unit.

• Before installing unit, the routing to carry in unit to the installation site should
be determined.

• Select a site where the unit is not affected by entering air.

• Select a site where the flow of supply and return air is not blocked.

• Select a site where refrigerant piping can easily be led to the outside.

• Select a site which allows the supply air to be distributed fully in room.

• Do not install unit at a site with oil splashing or steam in much quantity.

• Do not install unit at a site where combustible gas may generate, flow in, stag-

nate or leak.

• Do not install unit at a site where equipment generating high frequency waves
(a high frequency wave welder for example) is provided.

Part No. Accessories Qty

1 Insulation pipe 1
2 Tie band 3
3 Drain hose 1
4 Washer 8

Part No. Accessories Qty

5 Installation manual 1
6 Operation manual 1

• Use liquid refrigerant to fill the system.

- If gas refrigerant is used to seal the system, the composition of the refriger­ant in the cylinder will change and performance may drop.

• Do not use a refrigerant other than R410A.

- If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may
cause the refrigerator oil to deteriorate.

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

- The vacuum pump oil may flow back into the refrigerant cycle and cause the
refrigerator oil to deteriorate.

• Do not use the following tools that are used with conventional refriger­ants.
(Gauge manifold, charge hose, gas leak detector, reverse flow check valve,
refrigerant charge base, vacuum gauge, refrigerant recovery equipment)

- If the conventional refrigerant and refrigerator oil are mixed in the R410A,

the refrigerant may deteriorated.

- If water is mixed in the R410A, the refrigerator oil may deteriorate.

- Since R410A does not contain any chlorine, gas leak detectors for conven-

tional refrigerants will not react to it.

• Do not use a charging cylinder.

- Using a charging cylinder may cause the refrigerant to deteriorate.

• Be especially careful when managing the tools.

- If dust, dirt, or water gets in the refrigerant cycle, the refrigerant may deterio-

rate.

1.3. Before getting installed

Caution:

• Do not install the unit where combustible gas may leak.

- If the gas leaks and accumulates around the unit, an explosion may result.

• Do not use the air conditioner where food, pets, plants, precision instru­ments, or artwork are kept.

- The quality of the food, etc. may deteriorate.

• Do not use the air conditioner in special environments.

- Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of

the air conditioner or damage its parts.

• When installing the unit in a hospital, communication station, or similar
place, provide sufficient protection against noise.

- The inverter equipment, private power generator, high-frequency medical

equipment, or radio communication equipment may cause the air conditioner
to operate erroneously, or fail to operate. On the other hand, the air condi­tioner may affect such equipment by creating noise that disturbs medical
treatment or image broadcasting.

• Do not install the unit on a structure that may cause leakage.

- When the room humidity exceeds 80% or when the drain pipe is clogged,

condensation may drip from the indoor unit. Perform collective drainage work
together with the outdoor unit, as required.

• The indoor models should be installed the ceiling over than 2.5 m from
floor.

1.4. Before getting installed (moved) - elec-

trical work

Caution:

• Ground the unit.

- Do not connect the ground wire to gas or water pipes, lightning rods, or

telephone ground lines. Improper grounding may result in electric shock.

• Install the power cable so that tension is not applied to the cable.

- Tension may cause the cable to break and generate heat and cause a fire.

• Install an leak circuit breaker, as required.

- If an leak circuit breaker is not installed, electric shock may result.

• Use power line cables of sufficient current carrying capacity and rating.

- Cables that are too small may leak, generate heat, and cause a fire.

• Use only a circuit breaker and fuse of the specified capacity.

- A fuse or circuit breaker of a larger capacity or a steel or copper wire may
result in a general unit failure or fire.

• Do not wash the air conditioner units.

- Washing them may cause an electric shock.

• Be careful that the installation base is not damaged by long use.

- If the damage is left uncorrected, the unit may fall and cause personal injury
or property damage.

• Install the drain piping according to this Installation Manual to ensure
proper drainage. Wrap thermal insulation around the pipes to prevent
condensation.

- Improper drain piping may cause water leakage and damage to furniture

and other possessions.

• Be very careful about product transportation.

- Only one person should not carry the product if it weighs more than 20 kg.

- Some products use PP bands for packaging. Do not use any PP bands for a

means of transportation. It is dangerous.

- Do not touch the heat exchanger fins. Doing so may cut your fingers.

- When transporting the outdoor unit, suspend it at the specified positions on

the unit base. Also support the outdoor unit at four points so that it cannot
slip sideways.

• Safely dispose of the packing materials.

- Packing materials, such as nails and other metal or wooden parts, may cause

stabs or other injuries.

- Tear apart and throw away plastic packaging bags so that children will not

play with them. If children play with a plastic bag which was not torn apart,
they face the risk of suffocation.

1.5. Before starting the test run

Caution:

• Turn on the power at least 12 hours before starting operation.

- Starting operation immediately after turning on the main power switch can

result in severe damage to internal parts. Keep the power switch turned on
during the operational season.

• Do not touch the switches with wet fingers.

- Touching a switch with wet fingers can cause electric shock.

• Do not touch the refrigerant pipes during and immediately after opera­tion.

- During and immediately after operation, the refrigerant pipes are may be hot

and may be cold, depending on the condition of the refrigerant flowing through
the refrigerant piping, compressor, and other refrigerant cycle parts. Your
hands may suffer burns or frostbite if you touch the refrigerant pipes.

• Do not operate the air conditioner with the panels and guards removed.

- Rotating, hot, or high-voltage parts can cause injuries.

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

- Always wait at least five minutes before turning off the power. Otherwise,

water leakage and trouble may occur.

8

DFEINLPGRRUTR

CZSVHGPO

GB

4. Fixing hanging bolts

4.1. Fixing hanging bolts

[Fig. 4.1.1] (P.2)

A Center of gravity

(Give site of suspension strong structure.)

• Do not install unit at a site where fire detector is located at the supply air side.
(Fire detector may operate erroneously due to the heated air supplied during
heating operation.)

• When special chemical product may scatter around such as site chemical plants
and hospitals, full investigation is required before installing unit. (The plastic
components may be damaged depending on the chemical product applied.)

• If the unit is run for long hours when the air above the ceiling is at high tem­perature/high humidity (due point above 26 °C), due condensation may be
produced in the indoor unit. When operating the units in this condition, add
insulation material (10-20 mm) to the entire surface of the indoor unit to avoid
due condensation.

3.1. Install the indoor unit on a ceiling strong

enough to sustain its weight

Warning:

The unit must be securely installed on a structure that can sustain its weight.
If the unit is mounted on an unstable structure, it may fall down causing
injuries.

3.2. Securing installation and service space

• Select the optimum direction of supply airflow according to the configuration of
the room and the installation position.

• As the piping and wiring are connected at the bottom and side surfaces, and
the maintenance is made at the same surfaces, allow a proper space properly.
For the efficient suspension work and safety, provide a space as much as
possible.

[Fig. 3.2.1] (P.2)

A Access door B Electrical parts box
C Air inlet D Air outlet
E Ceiling surface F Service space (viewed from the side)
G Service space (viewed from the direction of arrow)

1 600 mm or more 2 100 mm or more

3 20 mm or more 4 300 mm or more

3.3. Combining indoor units with outdoor

units

For combining indoor units with outdoor units, refer to the outdoor unit installation
manual.

Hanging structure

• Ceiling: The ceiling structure varies from building to one another. For detailed
information, consult your construction company.

• If necessary, reinforce the hanging bolts with anti-quake supporting members
as countermeasures against earthquakes.
* Use M10 for hanging bolts and anti-quake supporting members (field supply).

5. Installing the unit

5.1. Hanging the unit body

Bring the indoor unit to an installation site as it is packed.
To hang the indoor unit, use a lifting machine to lift and pass through the
hanging bolts.

[Fig. 5.1.1] (P.2)

A Unit body
B Lifting machine

[Fig. 5.1.2] (P.2)

C Nuts (field supply)
D Washers (field supply)
E M10 hanging bolt (field supply)

5.2. Confirming the unit’s position and fix-

ing hanging bolts

Use the gage supplied with the panel to confirm that the unit body and
hanging bolts are positioned in place. If they are not positioned in place,
it may result in dew drops due to wind leak. Be sure to check the positional
relationship.
Use a level to check that the surface indicated by

AA

AA

A is at level. Ensure

that the hanging bolt nuts are tightened to fix the hanging bolts.
To ensure that drain is discharged, be sure to hang the unit at level using
a level.

[Fig. 5.2.1] (P.2)

A Indoor unit’s bottom surface

Caution:

Install the unit in horizontal position. If the side with drain port is installed
higher, water leakage may be caused.

6. Refrigerant pipe and drain pipe specifications

Center of gravity and Product Weight

To avoid dew drops, provide sufficient antisweating and insulating work to the re­frigerant and drain pipes.
When using commercially available refrigerant pipes, be sure to wind commer­cially available insulating material (with a heat-resisting temperature of more than
100 °C and thickness given below) onto both liquid and gas pipes.
Insulate all indoor pipes with form polyethylene insulation with a minimum density
of 0.03 and a thickness as specified in the table below.

1 Select the thickness of insulating material by pipe size.

Pipe size Insulating material’s thickness

6.4 mm to 25.4 mm More than 10 mm

28.6 mm to 38.1 mm More than 15 mm

2 If the unit is used on the highest story of a building and under conditions of

high temperature and humidity, it is necessary to use pipe size and insulating
material’s thickness more than those given in the table above.

3 If there are customer’s specifications, simply follow them.

Model name
PEFY-P20VMA(L)-E
PEFY-P25VMA(L)-E
PEFY-P32VMA(L)-E
PEFY-P40VMA(L)-E
PEFY-P50VMA(L)-E
PEFY-P63VMA(L)-E
PEFY-P71VMA(L)-E
PEFY-P80VMA(L)-E
PEFY-P100VMA(L)-E
PEFY-P125VMA(L)-E
PEFY-P140VMA(L)-E

W
643
643
643
643
643
643
643
643
643
643
643

L
754
754
754
954
954

1154
1154
1154
1454
1454
1654

X
330
330
330
340
340
325
325
325
330
330
332

Y
300
300
300
375
375
525
525
525
675
675
725

Z
130
130
130
130
130
130
130
130
130
130
130

Product Weight (kg)

23 (22)
23 (22)
23 (22)
26 (25)
26 (25)
32 (31)
32 (31)
32 (31)
42 (41)
42 (41)
46 (45)

The values in the parenthesis are for the PEFY-P·VMAL-E model.

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• Never use existing refrigerant piping.

- The large amount of chlorine in conventional refrigerant and refrigerator oil
in the existing piping will cause the new refrigerant to deteriorate.

• Store the piping to be used during installation indoors and keep both
ends of the piping sealed until just before brazing.

- If dust, dirt, or water gets into the refrigerant cycle, the oil will deteriorate and

the compressor may fail.

• Use Suniso 4GS or 3GS (small amount) refrigerator oil to coat the flare
and flange connection part. (For models using R22)

•

Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator
oil to coat flares and flange connections. (For models using R410A or R407C)

- The refrigerant used in the unit is highly hygroscopic and mixes with water

and will degrade the refrigerator oil.

7.2. Drain piping work

• Ensure that the drain piping is downward (pitch of more than 1/100) to the
outdoor (discharge) side. Do not provide any trap or irregularity on the way.

• Ensure that any cross-wise drain piping is less than 20 m (excluding the differ­ence of elevation). If the drain piping is long, provide metal braces to prevent it
from waving. Never provide any air vent pipe. Otherwise drain may be ejected.

• Use a hard vinyl chloride pipe VP-25 (with an external diameter of 32 mm) for
drain piping.

• Ensure that collected pipes are 10 cm lower than the unit body’s drain port.

• Do not provide any odor trap at the drain discharge port.

• Put the end of the drain piping in a position where no odor is generated.

•

Do not put the end of the drain piping in any drain where ionic gases are generated.

[Fig. 7.2.1] (P.3)

Correct piping

Wrong piping

A Insulation (9 mm or more)
B Downward slope (1/100 or more)
C Support metal
K Air bleeder
L Raised
M Odor trap

Grouped piping

D O. D. ø32 PVC TUBE
E Make it as large as possible. About 10 cm.
F Indoor unit
G Make the piping size large for grouped piping.
H Downward slope (1/100 or more)
I O. D. ø38 PVC TUBE for grouped piping. (9 mm or more insulation)

PEFY-P·VMA-E model

J Up to 550 mm
N Drain hose (accessory)
O Horizontal or slightly upgradient

[PEFY-P·VMA model]

1. Insert the drain hose (accessory) into the drain por t (insertion margin: 32mm).
(The drain hose must not be bent more than 45° to prevent the hose from
breaking or clogging.)
(Attach the hose with glue, and fix it with the band (small, accessory).)

2. Attach the drain pipe (O.D. ø32 PVC TUBE PV-25, field supply).
(Attach the pipe with glue, and fix it with the band (small, accessory).)

3. Perform insulation work on the drain pipe (O.D. ø32 PVC TUBE PV-25) and on
the socket (including elbow).

4. Check the drainage. (Refer to [Fig. 7.3.1])

7. Connecting refrigerant pipes and drain pipes

7.1. Refrigerant piping work

This piping work must be done in accordance with the installation manuals for both
outdoor unit and BC controller (simultaneous cooling and heating series R2).

• Series R2 is designed to operate in a system that the refrigerant pipe from an
outdoor unit is received by BC controller and branches at the BC controller to
connect between indoor units.

• For constraints on pipe length and allowable difference of elevation, refer to
the outdoor unit manual.

• The method of pipe connection is brazing connection.

Caution:

• Install the refrigerant piping for the indoor unit in accordance with the
following.

1. Cut the tip of the indoor unit piping, remove the gas, and then remove the
brazed cap.

[Fig. 7.1.1] (P.3)

A Cut here
B Remove brazed cap

2. Pull out the thermal insulation on the site refrigerant piping, braze the unit
piping, and replace the insulation in its original position.
Wrap the piping with insulating tape.

Note:

• When blazing the refrigerant pipes, be sure to blaze, after covering a wet
cloth to the pipes of the units in order to prevent it from burning and
shrinking by heat.

[Fig. 7.1.2] (P.3)

A Cool by a wet cloth

• Pay strict attention when wrapping the copper piping since wrapping the
piping may cause condensation instead of preventing it.

[Fig. 7.1.3] (P.3)

A Thermal insulation B Pull out insulation
C Wrap with damp cloth D Return to original position
E Ensure that there is no gap here F Wrap with insulating tape

Cautions On Refrigerant Piping

Be sure to use non-oxidative brazing for brazing to ensure that no for­eign matter or moisture enter into the pipe.
Be sure to apply refrigerating machine oil over the flare connection seat­ing surface and tighten the connection using a double spanner.
Provide a metal brace to support the refrigerant pipe so that no load is
imparted to the indoor unit end pipe. This metal brace should be pro­vided 50 cm away from the indoor unit’s flare connection.

Warning:

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

- Doing so may cause the unit or pipes to burst, or result in explosion or fire during

use, during repair, or at the time of disposal of the unit.

- It may also be in violation of applicable laws.

- MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for

malfunctions or accidents resulting from the use of the wrong type of refrigerant.

Caution:

• Use refrigerant piping made of C1220 (Cu-DHP) phosphorus deoxidized
copper as specified in the JIS H3300 “Copper and copper alloy seamless
pipes and tubes”. In addition, be sure that the inner and outer surfaces
of the pipes are clean and free of hazardous sulphur, oxides, dust/dirt,
shaving particles, oils, moisture, or any other contaminant.

6.1. Refrigerant pipe and drain pipe specifications

Refrigerant pipe

(Brazing connection)

Model PEFY-P·VMA(L)-E

Item 20·25·32·40·50 63·71·80·100·125·140

Liquid pipe ø 6.35 ø 9.52

Gas pipe ø 12.7 ø 15.88

Drain pipe O.D. ø 32

6.2. Refrigerant pipe, drain pipe

[Fig. 6.2.1] (P.2)

A Refrigerant pipe (liquid pipe)
B Refrigerant pipe (gas pipe)
C Drain pipe (O.D. ø32)
D Drain pipe (O.D. ø32, spontaneous draining)

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8.Duct work

7.3. Confirming drain discharge

Make sure that the drain-up mechanism operates normally for discharge
and that there is no water leakage from the connections.

• Be sure to confirm the above in a period of heating operation.

• Be sure to confirm the above before ceiling work is done in the case of a new

construction.

1. Remove the water supply port cover on the same side as the indoor unit pip­ing.

2. Fill water into the feed water pump using a feed water tank. In filling, be sure to
put the end of the pump or tank in a drain pan. (If the insertion is incomplete,
water may flow over the machine.)

3. Perform the test run in cooling mode, or connect the connector to the ON side
of SWE on the Indoor controller board. (The drain pump and the fan are forced
to operate without any remote controller operation.) Make sure using a trans­parent hose that drain is discharged.

4. After confirmation, cancel the test run mode, and turn off the main power.

If the

connector is connected to the ON side of SWE, disconnect it and connect it to
the OFF side, and attach the water supply port cover into its original position.

[Fig. 7.3.1] (P.4)

A Insert pump's end 2 to 4 cm.
B Remove the water supply port.
C About 2500 cc
D Water
E Filling port
F Screw

[Fig. 7.3.2] (P.4)

<Indoor controller board>

5. Attach the insulating material, and fix it with the band (large, accessory) to
insulate the drain port.

[Fig. 7.2.2] (P.3) *only on the PEFY-P·VMA-E model

A Indoor unit
B Tie band (accessory)
C Visible part
D Insertion margin
E Drain hose (accessory)
F Drain pipe (O.D. ø32 PVC TUBE, field supply)
G Insulating material (field supply)
H Tie band (accessory)

[PEFY-P·VMAL-E model]

1. Insert the drain hose (accessory) into the drain port.

(The drain hose must not be bent more than 45° to prevent the hose from
breaking or clogging.)

The connecting part between the indoor unit and the drain hose may be
disconncted at the maintenance. Fix the part with the accessory band, not be
adhered.

2. Attach the drain pipe (O.D. ø32 PVC TUBE, field supply).

(Attach the pipe with glue for the hard vinyl chloride pipe, and fix it with the
band (small, accessory).)

3. Perform insulation work on the drain pipe (O.D. ø32 PVC TUBE) and on the
socket (including elbow).

[Fig. 7.2.3] (P.3) *only on the PEFY-P·VMAL-E model

A Indoor unit
B Tie band (accessory)
C Band fixing part
D Insertion margin
E Drain hose (accessory)
F Drain pipe (O.D. ø32 PVC TUBE, field supply)
G Insulating material (field supply)

• In connecting duct, insert canvas duct between unit and duct.

• Use incombustible material for duct parts.

• Provide full insulation to inlet duct flange and outlet duct to prevent condensa-

tion.

• Be sure to change the position of air filter to the position where it can be serv­iced.

[Fig. 8.0.1] (P.4)

<A> In case of rear inlet

<B> In case of bottom inlet

A Duct B Air inlet
C Access door D Canvas duct
E Ceiling surface F Air outlet
G Leave distance enough to prevent short cycle

• Procedure for changing the rear inlet to the bottom inlet.

[Fig. 8.0.2] (P.4)

A Filter B Bottom plate

1. Remove air filter. (First remove filter lock screw.)

2. Remove the bottom plate.

3. Fit the bottom plate to the rear of the body. [Fig. 8.0.3] (P.4)
(Position of lug-holes on the plate are different from those for rear inlet.)

4. Fit filter to the underside of the body.
(Be careful of which side of the filter to fit.) [Fig. 8.0.4] (P.4)

[Fig. 8.0.4] (P.4)

C Nail for the bottom inlet D Nail for the rear inlet

Caution:

• Inlet duct of 850 mm or more should be construted.
To connect the air conditioner main body and the duct for potential equali-

zation.

• To reduce the risk of injury from metal sheet edges, wear protective gloves.

• To connect the air conditioner main body and the duct for potential equali-

zation.

• The noise from the intake will increase dramatically if intake is fitted
directly beneath the main body. Intake should therefore be installed as
far away from the main body as possible.
Particular care is required when using it with bottom inlet specifications.

• Install sufficient thermal insulation to prevent condensation forming on

outlet duct flanges and outlet ducts.

• Keep the distance between the inlet grille and the fan over 850 mm.

If it is less than 850 mm, install a safety guard not to touch the fan.

• To avoid electrical noise interference, do not run transmission lines at
the bottom of the unit.

When the plate is attached on
the rear side, it exceeds the
height of the rear body panel.

Replicate the plate along the
slit when there is not enough
room above for the entire unit.

SWE SWE

OFF ON OFF ON

< OFF > < ON >

Connector

SWE SWE

OFF ON OFF ON

< ON > < OFF >

Connector

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9.1. Power supply wiring

• Power supply cords of appliances shall not be lighter than design 245 IEC 57 or 227 IEC 57.

• A switch with at least 3 mm contact separation in each pole shall be provided by the Air conditioner installation.

[Fig. 9.1.1] (P.4)

A Ground-fault interrupter
B Local switch/Wiring breaker
C Indoor unit

[Selecting non-fuse breaker (NF) or earth leakage breaker (NV)]

To select NF or NV instead of a combination of Class B fuse with switch, use the following:

• In the case of Class B fuse rated 15 A or 20 A,

NF model name (MITSUBISHI): NF30-CS (15 A) (20 A)
NV model name (MITSUBISHI): NV30-CA (15 A) (20 A)

Use an earth leakage breaker with a sensitivity of less than 30 mA 0.1 s.

Caution:

Do not use anything other than the correct capacity breaker and fuse. Using fuse, wire or copper wire with too large capacity may cause a risk of malfunction or
fire.

Transmission cable specifications

9. Electrical wiring

6. Be sure to connect control cables to the indoor unit, remote controller, and the

outdoor unit.

7. Put the unit to the ground on the outdoor unit side.

8. Select control cables from the conditions given in page

11

.

Caution:

• Be sure to put the unit to the ground on the outdoor unit side. Do not

connect the earth cable to any gas pipe, water pipe, lightening rod, or
telephone earth cable. Incomplete grounding may cause a risk of electric
shock.

• If the supply cord is damaged, it must be replaced by the manufacturer,

its service agent or similarly qualified persons in order to avoid a hazard.

Precautions on electrical wiring

Warning:

Electrical work should be done by qualified electrical engineers in accord­ance with “Engineering Standards For Electrical Installation” and supplied
installation manuals. Special circuits should also be used. If the power cir­cuit lacks capacity or has an installation failure, it may cause a risk of elec­tric shock or fire.

1. Be sure to install an earth leakage breaker to the power.

2. Install the unit to prevent that any of the control circuit cables (remote control­ler, transmission cables) is brought in direct contact with the power cable out­side the unit.

3. Ensure that there is no slack on all wire connections.

4. Some cables (power, remote controller, transmission cables) above the ceiling
may be bitten by mouses. Use as many metal pipes as possible to insert the
cables into them for protection.

5. Never connect the power cable to leads for the transmission cables. Other­wise the cables would be broken.

Type of cable

Transmission cables

Shielding wire (2-core)

CVVS, CPEVS or MVVS

ME Remote controller cables MA Remote controller cables

Sheathed 2-core cable (unshielded) CVV

Cable diameter

More than 1.25 mm

2

0.3 ~ 1.25 mm

2

(0.75 ~ 1.25 mm2)*1

0.3 ~ 1.25 mm

2

(0.75 ~ 1.25 mm2)*1

Max length: 200 m

Maximum length of transmission lines for centralized control and indoor/

outdoor transmission lines (Maximum length via indoor units): 500 m MAX

The maximum length of the wiring between power supply unit for

transmission lines (on the transmission lines for centralized control) and

each outdoor unit and system controller is 200 m.

Max length: 200 m

When 10 m is exceeded, use

cables with the same specifica-

tion as transmission cables.

Remarks

*1 Connected with simple remote controller.

CVVS, MVVS: PVC insulated PVC jacketed shielded control cable
CPEVS: PE insulated PVC jacketed shielded communication cable
CVV: PVC insulated PVC sheathed control cable

Earth wire

<mm

2

>

Power wire

<mm2>

(Non-fuse breaker)

<A>

Indoor unit 15 A 30 mA 0.1sec. or less

Breaker capacity

<A>

Over-current protector*3

<A>

Minimum Wire thicknessWiring breaker

Ground-fault interrupter
*1, *2

Local switch

221616 16

*1 The Ground-fault interrupter should support Inverter circuit. (e.g. Mitsubishi Electric's NV-C series or equivalent).
*2 Ground-fault interrupter should combine using of local switch or wiring breaker.
*3 It shows data for B-type fuse of the breaker for current leakage.

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9.6. Setting addresses

(Be sure to operate with the main power turned OFF.)

[Fig. 9.5.1] (P.5)

<Indoor controller board>

• There are two types of rotary switch setting available: setting addresses 1 to 9
and over 10, and setting branch numbers.
1 How to set addresses

Example: If Address is “3”, remain SW12 (for over 10) at “0”, and match
SW11(for 1 to 9) with “3”.

2 How to set branch numbers SW14 (Series R2 only)

The branch number assigned to each indoor unit is the port number of the
BC controller to which the indoor unit is connected.
Leave it to “0” on the non-R2 series of units.

• The rotary switches are all set to “0” when shipped from the factory. These
switches can be used to set unit addresses and branch numbers at will.

• The determination of indoor unit addresses varies with the system at site. Set
them referring to the Data Book.

9.7. Sensing room temperature with the

built-in sensor in a remote controller

If you want to sense room temperature with the built-in sensor in a remote control­ler, set SW1-1 on the control board to “ON”. The setting of SW1-7 and SW1-8 as
necessary also makes it possible to adjust the air flow at a time when the heating
thermometer is OFF.

9.8. Changing the power voltage setting

(Be sure to operate with the main power turned OFF.)

[Fig. 9.5.1] (P.5)

Please set the switch SW5 according to the power voltage.

• Set SW5 to 240V side when the power supply is 240 volts.

• When the power supply is 220 and 230 volts, set SW5 to 220V side.

9.3. Connecting electrical connections

Please identify the model name of the operation manual attached on the terminal
box cover with that shown on the rating name plate.

1. Remove the screw (1pc) holding the cover to dismount the cover.

[Fig. 9.3.1] (P.5)

A Screw holding cover (1pc) B Cover

2. Open knockout holes
(Recommend to use a screwdriver or the like for this work.)

[Fig. 9.3.2] (P.5)

C Terminal box D Knockout hole
E Remove

3. Fix power source wiring to terminal box by using buffer bushing for tensile
force. (PG connection or the like.) Connect transmission wiring to transmission
terminal block through the knockout hole of terminal box using ordinary bush­ing.

[Fig. 9.3.3] (P.5)

F Use PG bushing to keep the weight of the cable and external force from being

applied to the power supply terminal connector. Use a cable tie to secure the
cable.

G Power source wiring H Use ordinary bushing
I Transmission wiring

4. Connect the power source, Earth, transmission and remote controller wiring.
The dismounting of the terminal box is not needed.

[Fig. 9.3.4] (P.5)

J Terminal block for power source
K Terminal block for indoor transmission
L Terminal block for remote controller

[Shield wire connection]

[Fig. 9.3.5] (P.5)

A Terminal block B Round terminal
C Shield wire
D The earth wire from two cables are connected together to the S terminal. (Dead-

end connection)

E Insulation tape (To keep the ear th wire of the shielded cable from coming in con-

tact with the transmission terminal)

5. After wiring is complete, make sure again that there is no slack on the connec­tions, and attach the cover onto the terminal box in the reverse order of re­moval.

Notes:

• Do not pinch the cables or wires when attaching the terminal box cover.
Doing so may cause a risk of disconnection.

• When accommodating the terminal box, make sure that the connectors
on the box side are not removed. If removed, it cannot operate normally.

9.2. Connecting remote controller, indoor

and outdoor transmission cables

• Connect indoor unit TB5 and outdoor unit TB3. (Non-polarized 2-wire)

The “S” on indoor unit TB5 is a shielding wire connection. For specifications
about the connecting cables, refer to the outdoor unit installation manual.

• Install a remote controller following the manual supplied with the remote con­troller.

• Connect the “1” and “2” on indoor unit TB15 to a MA remote controller. (Non-
polarized 2-wire)

• Connect the “M1” and “M2” on indoor unit TB5 to a M-NET remote controller.
(Non-polarized 2-wire)

• Connect the remote controller’s transmission cable within 10 m using a 0.75mm

2

core cable. If the distance is more than 10 m, use a 1.25 mm2 junction cable.

[Fig. 9.2.1] (P.4) MA Remote controller

[Fig. 9.2.2] (P.4) M-NET Remote controller

A Terminal block for indoor transmission cable
B Terminal block for outdoor transmission cable
C Remote controller

• DC 9 to 13 V between 1 and 2 (MA remote controller)

• DC 24 to 30 V between M1 and M2 (M-NET remote controller)

[Fig. 9.2.3] (P.5) MA Remote controller

[Fig. 9.2.4] (P.5) M-NET Remote controller

A Non-polarized B TB15
C Remote Controller D TB5

• The MA remote controller and the M-NET remote controller cannot be used at
the same time or interchangeably.

Caution:

Install wiring so that it is not tight and under tension. Wiring under tension
may break, or overheat and burn.

External static pressure Switch operation

35 Pa

50 Pa

70 Pa

100 Pa

150 Pa

3
2
1

SWA SWC

SWC

3
2
1

SWA

SWC

3
2
1

SWA

SWC

3
2
1

SWA

SWC

3
2
1

SWA

1
2

1
2

1
2

1
2

1
2

[Fig. 9.5.1] (P.5)

<Indoor controller board>

9.4. External I/O specifications

Caution:

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

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

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

9.5. Selecting the external static pressure

As the factory setting is for use under an external static pressure of 50 Pa, no
switch operation is needed when using under the standard condition.