Mitsubishi Electric PEFY-P06, PEFY-P15, PEFY-P08, PEFY-P18l, PEFY-P12 Installation Manual

Air-Conditioners
INDOOR UNIT

PEFY-P06,P08,P12,P15,P18,P24 NMSU-E

GB

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.

F

KB79K383H01_cv.p65 08.1.22, 5:45 PM3

3

3.2

[Fig. 3.2.1]

4

4.1

[Fig. 4.1.1]

A Refrigerant pipe (liquid pipe): HP
B Refrigerant pipe (gas pipe): LP
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 (accessory)
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]

2

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 [23-5/8 in] or more

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

3 10 mm [13/32 in] or more

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

A Indoor unit’s bottom surface

YX

LW

A

Z

B

A

A

A

B

C

D

270 [10-21/32]

170

[6-23/32]

102

[4-1/32]

48

[1-29/32]

270 [10-21/32]

116

[4-19/32]70[2-25/32]

B

C

D

A

F

G

3

4

E

A

50~150 [1-31/32~5-29/32] 450 [17-23/32]

450 [17-23/32]

49

[1-15/16]

625

[24-5/8]

777 [30-19/32]

100

[3-15/16]

20

[13/16]

90

[3-9/16]

23

[29/32]

C
B
A

D

B

E

200 [7-7/8]

1

2

C

D

C

E

D

(Unit: mm [in])

Model

PEFY-P06,08,12 NMSU-E

PEFY-P15,18NMSU-E

PEFY-P24NMSU-E

A

700

[27-9/16]

900

[35-7/16]

1100

[43-5/16]

B

752

[29-5/8]

952

[37-1/2]

1152

[45-3/8]

C

798

[31-7/16]

998

[39-5/16]

1198

[47-3/16]

D
660
[26]
860

[33-7/8]

1060

[41-3/4]

E

800

[31-1/2]

1000

[39-3/8]

1200

47-1/4

(Unit: mm [in])

(Unit: mm [in])

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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. 300 mm [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 mm [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 mm [1-1/2 in] PVC TUBE for grouped piping.

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

J Up to 550 mm [21-21/32 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 [65 ft]

1.5-2 m [5 to 7 ft]

G

F

FF

B

C

DE E

H

G

K

J

F

I

A

25 [1] 25 [1]

35

[1-13/32]

A Indoor unit
B Insulation pipe (long) (accessory)
C Tie band (accessory)
D Visible part
E Insertion margin
F Drain hose (accessory)
G Drain pipe (O.D. ø32 mm [1-1/4 in] PVC TUBE, field supply)
H Insulating material (field supply)
I Tie band (accessory)
J Max.180 ± 5 mm [7-3/32 ± 7/32 in]
K To be gap free. The joint section of the insulation material meet must be

at the top.

A

[Fig. 7.1.2]

A Cool by a wet cloth

[Fig. 7.2.3]

A Indoor unit
B Insulation pipe (short) (accessory)
C Tie band (accessory)
D Band fixing part
E Insertion margin
F Drain hose (accessory)
G Drain pipe (O.D. ø32 mm [1-1/4 in] PVC TUBE, field supply)
H Insulating material (field supply)
I Max.145 ± 5 mm [5-23/32 ± 7/32 in]

D

E

H

G

I

F

B

C

5

[7/32]

A

25 [1]

(Unit: mm [in])

(Unit: mm [in])

KB79K383H01-illust 08.1.16, 2:44 PM3

4

A Air inlet
B Air outlet
C Access door
D Ceiling surface
E Canvas duct
F Air filter
G Inlet grille

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

F

G

E

DC

BA

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 Terminal block for indoor

transmission cable

B Terminal block for outdoor

transmission cable

C Remote controller

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

G

C

D

A

S

M2

M1

B

1

2

L1

L2

G

DC24~30V

(A, B)

12

C

9.2

[Fig. 7.3.1]

7.3

A

B

F

C

D

E

A Insert pump's end 2 to 4 cm [13/16 to 1-19/32 in].
B Remove the water supply port.
C About 2000 cc
D Water
E Filling port
F Screw

[Fig. 7.3.2]

SWE

<Indoor board>

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5

E Use conduit to keep the weight of the cable and external force from being applied

to the power supply terminal connector.

F Power source wiring
G Conduit
H Terminal bed box
I Knockout hole (for power source wiring)
J Washer (accessory)
K Tensile force
L Use ordinary bushing
M Transmission wiring

N Power source terminal bed
O Terminal bed for indoor transmission
P Terminal bed for remote controller
Q To 1-phase power source
R Transmission line DC 30 V
S Terminal bed for outdoor transmission line (TB3)
T Transmission line to the remote controller, ter minal bed for indoor unit and

BC controller

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

sion terminal)

<Address board>

9.3

[Fig. 9.3.3] [Fig. 9.3.4]

[Fig. 9.5.1]

[Fig. 9.3.5]

9.5

A Terminal bed box
B Knockout hole
C RemoveA Screw holding cover (2pcs)

B Cover

[Fig. 9.3.1] [Fig. 9.3.2]

A

B

C

A

B

M2

M1

O

N

T

P

R

S

M1 M2 S

12

L1

L2 G

Q

L2

L1

E

F

G

K

M

L

J

H

G

I

M2 SM1

A

B

C

E

D

A

C

FD BE

2

1

A SWA
B SWC
C SW1
D SW11
E SW12
F SW14

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Contents

1. Safety precautions

1.1. Before installation and electric work

s Before installing the unit, make sure you read all the “Safety

precautions”.

s The “Safety precautions” provide very important points re-

garding 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 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 par ts 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

or R22 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.

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

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

1.2. Precautions for devices that use R410A

or R22 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 ......................................................................................... 10

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

9.2. Connecting remote controller, indoor and outdoor

transmission cables ................................................................. 11

9.3. Connecting electrical connections ........................................... 11

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

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• Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator
oil to coat flares and flange connections.

- The refrigerator oil will degrade if it is mixed with a large amount of mineral oil.

• Use liquid refrigerant to fill the system.

- If gas refrigerant is used to seal the system, the composition of the refriger-

ant in the cylinder will change and performance may drop.

• Do not use a refrigerant other than R410A or R22.

- If another refrigerant is used, the chlorine in the refrigerant and the refriger-

ant oil in the existing piping 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 or

R22, the refrigerant may deteriorated.

- If water is mixed in the R410A or R22, 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 deter iorate.

• 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 [9 ft]
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

[45 LBS].

- 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 tor n 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 tur ning off the power. Otherwise,

water leakage and trouble may occur.

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, stag­nate 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 (long) 1
2 Insulation pipe (short) 1
3 Tie band 3
4 Drain hose 1
5 Washer (for hanging) 8

Part No. Accessories Qty

6

Short pipe (ø12.7 mm [1/2 in]-ø15.88 mm [5/8 in]) : Model P18 only.

1

7

Short pipe (ø6.35 mm [1/4 in]-ø9.52 mm [3/8 in]) : Model P18 only.

1
8 Installation manual 1
9 Operation manual 1

10 Washer (for power source wiring) 2

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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.)

Hanging structure

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

• 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 [79 °F]), due condensation may
be produced in the indoor unit. When operating the units in this condition, add
insulation material (10 - 20 mm [13/32 to 13/16 in]) 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 [23-5/8 in] or more 2 100 mm [3-15/16 in] or more

3 10 mm [13/32 in] or more 4 300 mm [11-13/16 in] or more

3.3. Combining indoor units with outdoor

units

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

• 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

ss

ss

s Bring the indoor unit to an installation site as it is packed.
ss

ss

s 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 (accessory)
E M10 hanging bolt (field supply)

5.2. Confirming the unit’s position and fix-

ing hanging bolts

ss

ss

s 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.

ss

ss

s 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.

ss

ss

s 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

Model name
PEFY-P06NMSU-E
PEFY-P08NMSU-E
PEFY-P12NMSU-E
PEFY-P15NMSU-E
PEFY-P18NMSU-E
PEFY-P24NMSU-E

W (mm [in])
625 [24-5/8]
625 [24-5/8]
625 [24-5/8]
625 [24-5/8]
625 [24-5/8]
625 [24-5/8]

L (mm [in])
752 [29-5/8]
752 [29-5/8]
752 [29-5/8]
952 [37-1/2]
952 [37-1/2]

1152 [45-3/8]

X (mm [in])
263 [10-3/8]
263 [10-3/8]

275 [10-27/32]

280 [11-1/32]
280 [11-1/32]

285 [11-1/4]

Y (mm [in])
338 [13-5/16]
338 [13-5/16]

340 [13-13/32]

422 [16-5/8]
422 [16-5/8]
511 [20-1/8]

Z (mm [in])
105 [4-5/32]
105 [4-5/32]

104 [4-1/8]

104 [4-1/8]

104 [4-1/8]

104 [4-1/8]

Product Weight (kg [Ib])

19 [42]
19 [42]
20 [46]
24 [54]
24 [54]
28 [62]

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 [212 °F]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.

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.

Insulating material’s thickness
More than 10 mm [13/32 in]
More than 15 mm [19/32 in]

Pipe size

6.4 to 25.4 mm [1/4 to 1 in]

28.6 to 38.1 mm [1-1/8 to 1-1/2 in]

KB79K383H01_en 08.1.24, 10:33 AM8