Mitsubishi PEFY-P18, PEFY-P08, PEFY-P12, PEFY-P15, PEFY-P24 Installation Manual

Air-Conditioners
INDOOR UNIT

PEFY-P06,08,12,15,18,24,27,30,36,48,54NMAU-E

GB

F

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.

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 mm [1-1/4 in])
D Drain pipe (O.D. ø32 mm [1-1/4 in], 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 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[2~5-15/16] 450[17-3/4]

450[17-

3

/

4

]

49[1-

15

/

16

]

625[24-

5

/

8

]

777[30-

5

/

8

]

20[13/16]

100[3-

15

/16]

23
[15/16]

C
B
A

D

C

E

250[9-

7

/

8

]

1

2

B

A

137[5-7/16]67[2-5/8]

239[9-7/16]

357[14-

1

/16]

122[4-

13

/

16

]

33

[1-

5

/

16

]

41[1-

5

/

8

]

217[8-

9

/

16

]

C

A

B

D

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 [23-5/8 in] or more

2 100 mm [3-15/16 in] or more

3 20 mm [13/16 in] or more

4 300 mm [11-13/16 in] or more

Model

PEFY-P06,08,12NMAU-E

PEFY-P15,18NMAU-E

PEFY-P24,27,30NMAU-E

PEFY-P36,48NMAU-E

PEFY-P54NMAU-E

A

700

[27-9/16]

900

[35-7/16]

1100

[43-5/16]

1400

[55-1/8]

1600

[63]

B

754

[29-11/16]

954

[37-9/16]

1154

[45-7/16]

1454

[57-1/4]

1654

[65-1/8]

C

800

[31-1/2]

1000

[39-3/8]

1200

[47-1/4]

1500

[59-1/16]

1700

[66-15/16]

D

660

[25-31/32]

860

[33-27/32]

1060

[41-23/32]

1360

[53-17/32]

1560

[61-13/32]

E

800

[31-1/2]

1000

[39-3/8]

1200

[47-1/4]

1500

[59-1/16]

1700

[66-15/16]

(Unit: mm [in])

(Unit: mm [in])

(Unit: mm [in])

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[11-13/

16

in]

[Fig. 7.2.1]

Correct piping

Wrong piping

A Insulation (9 mm [3/8 in] 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 [1-1/4 in] PVC TUBE
E Make it as large as possible. About 10 cm

[3-15/16 in].

F Indoor unit
G Make the piping size large for grouped piping.
H Downward slope (1/100 or more)
I O. D. ø38 [1-1/2 in] PVC TUBE for grouped piping.

(9 mm [3/8 in] or more insulation)

J Up to 550 mm [21-11/16 in]
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 [65ft]

1.5-2m[5-7ft]

G

F

FF

B

CD D

G

F

E

H

A

32

[1-

1

/4]

35

[1-

13

/32]

25
[1]

A Indoor unit
B Tie band (accessory)
C Visible part
D Insertion margin
E Drain hose (accessory)
F Drain pipe (O.D. ø32 mm [1-1/4 in] PVC TUBE, field supply)
G Insulating material (field supply)
H Tie band (accessory)

A

[Fig. 7.1.2]

A Cool by a wet cloth

(Unit: mm [in])

4

AB

DE

CCCCCCC

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 Switch 16 A
B Overcurrent protection 16 A
C Indoor unit
D Total operating current be less than 16 A
E Pull box

A Ter minal block for indoor

transmission cable

B Ter minal 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 [13/16 to 1-5/8 in].
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

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 K Side frame
H Use ordinary bushing L Knockout hole (for power source wiring)
I Transmission wiring M Washer (accessory)
J Conduit

N Ter minal block for power source
O Ter minal block for indoor transmission
P 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 earth 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

L1

L2

GR

C

D

A

S

M2

M1

B

1

2

L1

L2

GR

DC24~30V

(A, B)

12

C

M2 SM1

A

B

C

E

D

9.5

[Fig. 9.5.1]

<Indoor controller board>

9.2

SWA

SW5

SW14

SW12

SWC

SW11

B

A

D

E

C

LK

J

M

J

G

FI

H

O

P

N

6

GBDFEINLPGRRUTR

CZSVHGPO

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 .................................................................. 11

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.

• When installing and moving the air conditioner to another site, do not
charge the it with a refrigerant different from the refrigerant specified on
the unit.

- If a different refrigerant or air is mixed with the original refrigerant, the refrig-

erant cycle may malfunction and the unit may be damaged.

• 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 refrigerant 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.