Mitsubishi Electric PURY-RP200YJM-A, PURY-RP300YJM-A, PURY-RP250YJM-A INSTALLATION MANUAL

Air-Conditioners For Building Application
OUTDOOR UNIT

PURY-RP-YJM-A (-BS)

For use with R410A

INSTALLATION MANUAL

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

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.

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.

EΓXEIPI∆IO O∆HΓIΩN EΓKATAΣTAΣHΣ

°И· ·ЫК¿ПВИ· О·И ЫˆЫЩ‹ ¯Ъ‹ЫЛ, ·Ъ·О·ПВ›ЫЩВ ‰И·‚¿ЫВЩВ ЪФЫВ¯ЩИО¿ ·˘Щfi ЩФ ВБ¯ВИЪ›‰ИФ ВБО·Щ¿ЫЩ·ЫЛ˜ ЪИУ ·Ъ¯›ЫВЩВ ЩЛУ
ВБО·Щ¿ЫЩ·ЫЛ ЩЛ˜ МФУ¿‰·˜ ОПИМ·ЩИЫМФ‡.

РУКОВОДСТВО ПО УСТАНОВКЕ

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

MONTAJ ELKMONTAJ ELK

MONTAJ ELK

MONTAJ ELKMONTAJ ELK

Emniyetli ve doqru biçimde naswl kullanwlacaqwnw öqrenmek için lütfen klima cihazwnw monte etmeden önce bu elkitabwnw dikkatle okuyunuz.

WW

TABITABI

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TABI

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TABITABI

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INSTALLATIONSHANDBOK

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

РЪКОВОДСТВО ЗА МОНТАЖ

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

6

[Fig. 6.0.1]

(1)

[Fig. 6.0.2]

C

<A> : Top view

300

*

<B> : Side view

<C> : When there is little space up to an obstruction

450

A

15

15

*

*

<A>

*

A :Front
B : Unit height
C : Back
D : Air outlet guide (Procured at the site)

BB

A

C

C

*

300

*

30

450

*

100

(2)

(3)

(4)

240

45°

BB

100

*

450

A

50

50

*

*

*

A

CC

<A>

450

*

A

C

B

A

450 450

B

C

AAA

*

100

450

A

100*

*

15

h

450 450

H

B

A

h

H

C

*

300

500

BB

A

900

<B>

*

300

*

1000

C

C

D

7

[Fig. 7.0.1]

RP200 ~ RP300

8m

A

50

40°

8m

<C>

C

(mm)

1000

B

A

*

B

900 300

A :Front
B : Must be open
C :Wall height (H)

(mm)

2

[Fig. 8.1.1]

a

b

c

d

BC

EFE

E

(*Note1)

E

BCD

g

i

j

h

8

<A> Without detachable leg

<B> With detachable leg

30mm

A

A : M10 anchor bolt procured at the site.
B :Corner is not seated.
C : Fixing bracket for hole-in anchor bolt (3 locations to fix

with screws).

D : Detachable leg

B

C

[Fig. 8.1.2]

D

9

[Fig. 9.2.1]
[RP200 ~ RP300]

30mm

B

A

C D

A

A : Screws

9.2

A

*Note1

A : Outdoor unit
B : BC controller (standard)
C : BC controller (main)
D : BC controller (sub)
E : Indoor unit (15 ~ 80)
F : Indoor unit (100 ~ 250)

3

9

A [Standard] (mm)

Å Outdoor model

RP200
RP250
RP300

*1 ø25.4 for R22

B (mm)

Î Total capacity of indoor units

a, b, c, d (mm)

Model number

15, 20, 25, 32, 40

50, 63, 71, 80
100, 125, 140

200
250

Unit combination A

Unit 1

-

-

-

~ 80

81 ~ 160

Unit 2

-

-

-

‰ Liquid pipe

ø9.52
ø9.52

‰ Liquid pipe

ø6.35
ø9.52
ø9.52
ø12.7
ø12.7

ı

High-pressure side

ø19.05
ø19.05
ø19.05

Ï Gas pipe

ø15.88
ø19.05

Ï Gas pipe

ø12.7
ø15.88
ø19.05

ø25.4 or ø28.58

ø28.58

9.2

Ç

Low-pressure side

ø28.58*1

ø28.58
ø28.58

4

10

10.2

[Fig. 10.2.1]

<A> Refrigerant service valve

(High-pressure side/brazed type)

C

A

D

[Fig. 10.2.2]

No.

A Shape

RP200
RP250
RP300

<B> Refrigerant service valve

(Low-pressure side/brazed type)

B

A : Shaft
B : Service port

E

C : Cap
D : Pinched connecting pipe severing portion
E : Pinched connecting pipe brazing portion

1

ID ø25.4

ø28.58

ID ø28.58

1 <C> Low-pressure side
1 <C> Low-pressure side
1 <C> Low-pressure side

[Fig. 10.2.3]

* When not attaching a low-pressure twinning pipe.

A

A : Example of closure materials (field supply)
B : Fill the gap at the site

B

<A> Front pipe routing
B When not attaching a low-pressure twinning pipe

<C>

<D>

D

A

B

E

F

<B> Bottom pipe routing
B When not attaching a low-pressure twinning pipe

<C>

<D>

D

C

D

E

F

<E> Severing portion

referral figure

H

G

*1

I

<A> Front pipe routing <B> Bottom pipe routing <C> Low-pressure side
<D> High-pressure side <E> Severing portion referral figure

A Shape B When not attaching a low-pressure twinning pipe C When attaching a low-pressure twinning pipe
D Refrigerant service valve piping E On-site piping (low-pressure connecting pipe) F On-site piping (high-pressure connecting pipe)
G 75 mm (reference measurement) H ID ø25.4 side I Severing portion

*1 Use a pipe cutter to sever.

5

10.3

F

D

[Fig. 10.3.1]

A

C

[Fig. 10.3.3]

A : Nitrogen gas

B

B

C

LOW

D

B In case of the R410A cylinder having no syphon pipe.

HI

E

G

H

I

J

B :To indoor unit
C : System analyzer
D :Low knob
E : Hi knob
F :Valve
G :Low-pressure pipe
H : High-pressure pipe
I : Outdoor unit
J : Service port

[Fig. 10.3.2]

LOW

B

10.4

M

A : System analyzer
B :Low knob
C : Hi knob
D :Valve
E :Low-pressure pipe
F : High-pressure pipe
G : Service port
H : Three-way joint
I :Valve
J :Valve
K : R410A cylinder
L : Scale
M :Vacuum pump
N :To indoor unit
O : Outdoor unit

EN

N

A

HI

C

H

F

O

G

I

K

J

L

A

A : Syphon pipe

[Fig. 10.4.1]

B

A

D

A : Steel wire B : Piping
C : Asphaltic oily mastic or asphalt
D : Heat insulation material A
E : Outer covering B

C

E

[Fig. 10.4.4]

<A> Inner wall (concealed)

A B

<E> Roof pipe shaft

G

C

<F> Penetrating portion on fire

limit and boundary wall

I

D

B

H

F

<B> Outer wall

D

A

1m1m

A B

A

B

[Fig. 10.4.3][Fig. 10.4.2]

C

D

E

E

B

E

A

D

A : High-pressure pipe B :Low-pressure pipe
C : Electric wire D : Finishing tape
E : Insulator

<C> Outer wall (exposed)

E

B

A

<D> Floor (waterproofing)

D

F

G

B

A : Sleeve B : Heat insulating material
C : Lagging D : Caulking material

J

E : Band F :Waterproofing layer
G : Sleeve with edge H : Lagging material
I : Mortar or other incombustible caulking
J : Incombustible heat insulation material

6

B

11

[Fig. 11.2.1]

Control box

[Fig. 11.2.2]

A : Cable strap
B :Power source cable
C :Transmission cable

A

Power supply terminal block

(TB1)

L1 L2 L3 N

A

Terminal block for indoor –

outdoor transmission line

(TB3)

C

11.2

Terminal block for
centralized control

(TB7)

A :Power source
B :Transmission line
C : Earth screw

B

[Fig. 11.3.1]

<A> Change the jumper connec-

tor from CN41 to CN40 *1

<B> SW2-1:ON *2

( ) Address

<C> Keep the jumper connector

on CN41

<B> SW2-1:ON *2

C

11.3

L

1

OC

CN40

CN41

(51)

TB3

M1M2

M1M2

S

TB7

2

L

6

L

D

CN41

CN41

(53)

M1M2

TB7

System

controller

ABS

OC

S

TB3

M1M2

BC

(52)

TB02

M1 M2 S

BC

(54)

TB02

M1 M2 S

L

3

A BC

IC

(01)

TB5

M1 M2 S

1

r

AB AB AB

(101)

RC

IC

(02)

TB5

M1 M2 S

IC

(04)

TB5

M1 M2 S

IC

(03)

TB5

M1 M2 S

5

L

4

r

A

B

(103)

RC

BS

(55)

TB02

M1 M2 S

L

4

IC

(05)

TB5

M1 M2 S

2

r

(105)

RC

TB5

M1 M2 S

(07)

3

(155)

RC

E

IC

r

TB5

M1 M2 S

IC

(06)

*1: When the power supply unit is not connected to the transmission line for centralized control, disconnect the male power supply

connector (CN41) from ONE outdoor unit in the system and connect it to CN40.

*2: If a system controller is used, set SW2-1 on all of the outdoor units to ON.

7

[Fig. 11.3.2]

<A> Change the jumper connec-

tor from CN41 to CN40 *1

<B> SW2-1:ON *2

<C> Keep the jumper connector

on CN41

<B> SW2-1:ON *2

A : Group 1
B : Group 3
C : Group 5
D : Shielded wire
E : Sub remote

controller

( ) Address

L

1

OC

CN40

CN41

(51)

TB3

M1 M2

M1M2

S

TB7

2

L

D

BC

(52)

TB02

M1 M2 S

L

3

A BC

TB5

M1 M2 1 2S

(01)

IC

TB15

2

c

MA

IC

(04)

TB5

M1 M2 S

1

c

BS

(55)

TB02

M1 M2 S

2

c

L

4

TB5

M1 M2 S

IC

(05)

TB15

12

ABABAB

MAMAMA

E

IC

(06)

c

2

TB15

TB5

12

M1 M2 S

1

c

c

4

3

c

OC

(02)

TB5

M1 M2 S

IC

TB15

12

CN41

(53)

TB3

M1 M2

M1M2

S

TB7

6

L

System

controller

A

B

S

BC

(54)

TB02

M1 M2 S

TB5

M1 M2 S

(03)

IC

TB15

12

1

c

AB

TB5

M1 M2 S

(07)

IC

TB15

12

[Fig. 11.3.3]

L

11

L

12

OC

M1M2 S

TB7

CN41

M1M2

(51)

TB3

M1M2

TB02

S

TB5

M1M2 S

ICBC

• ( ) Address

• Daisy-chain terminals (TB3) on outdoor units in the same refrigerant

system together.

• Leave the power jumper connector on CN41 as it is. When connecting a
system controller to the transmission line (TB7) for centralized control,
refer to [Fig. 11.3.1], [Fig. 11.3.2], or DATA BOOK.

[Fig. 11.4.1]

A : Switch (Breakers for

wiring and current
leakage)

B : Breakers for current

leakage

C : Outdoor unit
D : Pull box
E : Indoor unit
F : BC controller

(standard or main)

F':BC controller (sub)

3N~380–415V
L1, L2, L

3,

N

~220–240V
L, N

BA

BA

PE

PE

L

L

L

L

13

14

16

17

Ground

IC

TB5

M1M2 S

15

L

1

r

RC

AB

RP

TB2

TB3

ABS

S

1

r

18

L

TB5

M1M2 S

ABAB

IC

RC

TB5

M1M2 S

IC

11.4

C

F

E

PE

E

PE PE

F'

D

E E

8

Contents

1. Safety precautions ....................................................................................... 9

1.1. Before installation and electric work ............................................ 9

1.2. Precautions for devices that use R410A refrigerant .................. 10

1.3. Before installation ...................................................................... 10

1.4. Before installation (relocation) - electrical work ......................... 10

1.5. Before starting the test run ........................................................ 10

2. About the product ....................................................................................... 10

3. Combination of outdoor units ......................................................................11

4. Specifi cations ..............................................................................................11

5. Confi rmation of parts attached ....................................................................11

6. Space required around unit .........................................................................11

7. Lifting method .............................................................................................11

8. Installation of unit ....................................................................................... 12

8.1. Installation ................................................................................. 12

9. Refrigerant piping installation ..................................................................... 12

9.1. Caution ...................................................................................... 12

9.2. Refrigerant piping system ........................................................ 13

1. Safety precautions

1.1. Before installation and electric work

X Before installing the unit, make sure you read all the

“Safety precautions”.

X 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.

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

label.) <Color: yellow>

Warning:

Carefully read the labels affi xed to the main unit.

HIGH VOLTAGE WARNING:

•

Control box houses high-voltage parts.

•

When opening or closing the front panel of the control box, do not let it
come into contact with any of the internal components.

•

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

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 fi re.

•

This appliance is not intended for use by persons (including children)
with reduced physical, sensory or mental capabilities, or lack of
experience and knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a person responsible
for their safety.

•

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

- Failure to do so may cause the unit to fall down, resulting in injuries and
damage to the unit.

•

Use the specifi ed 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 fi re.

•

Prepare for strong winds and earthquakes and install the unit at the
specifi ed place.

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

•

Always use fi lters and other accessories specifi ed by Mitsubishi Electric.

- Ask an authorized technician to install the accessories. Improper
installation by the user may result in water leakage, electric shock, or fi re.

10. Additional refrigerant charge ...................................................................... 13

10.1. Calculation of additional refrigerant charge ............................... 13

10.2. Precautions concerning piping connection and

valve operation .......................................................................... 14

10.3. Airtight test, evacuation, and refrigerant charging ..................... 15

10.4. Thermal insulation of refrigerant piping ..................................... 16

11. Wiring (For details, refer to the installation manual of each unit and

controller.) .................................................................................................. 16

11.1. Caution ...................................................................................... 16

11.2. Control box and connecting position of wiring ........................... 16

11.3. Wiring transmission cables ....................................................... 17

11.4. Wiring of main power supply and equipment capacity .............. 18

12. Test run ...................................................................................................... 19

12.1. The following phenomena do not represent faults. ................... 19

13. Information on rating plate ......................................................................... 19

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 fi re may
result.

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

•
its service agent or similarly qualifi ed persons in order to avoid a
hazard.
Do not touch the heat exchanger fi ns.

•

- 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 fl ame, 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 fi re 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 dedicated power supply.

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

improperly, electric shock and fi re may result.

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 fi re 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 specifi ed on
the unit.

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

refrigerant 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 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 fi re 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

or operated forcibly, or parts other than those specifi ed by Mitsubishi
Electric are used, fi re or explosion may result.

To dispose of this product, consult your dealer.

•
The installer and system specialist shall secure safety against leakage

•
according to local regulation or standards.

- Choose the appropriate wire size and the switch capacities for the main

power supply described in this manual if local regulations are not available.

Pay special attention to the place of installation, such as a basement,

•
etc. where refrigeration gas can accumulate, since refrigerant is
heavier than the air.
For outdoor units that allow fresh air intake to the indoor unit, the

•
installation site must be carefully chosen to ensure only clean air can
enter the room.

- Direct exposure to outdoor air may have harmful effects on people or food.

•

Children should be supervised to ensure that they do not play with the
appliance.

GB

9

1.2. Precautions for devices that use
R410A refrigerant

Caution:

•

Use refrigerant piping made of phosphorus deoxidized 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
refrigerant 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 failure may result.

•

Apply a small amount of ester oil, ether oil, or alkyl benzene to fl ares.
(for indoor unit)

- Infi ltration of a large amount of mineral oil may cause the refrigerant oil to

GB

deteriorate.

Use liquid refrigerant to fi ll the system.

•

- If gas refrigerant is used to fi ll 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 mixed with R410A, the chlorine in the
refrigerant may cause the refrigerant oil to deteriorate.

Use a vacuum pump with a reverse fl ow check valve.

•

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

Do not use the following tools that are used with conventional

•
refrigerants.
(Gauge manifold, charge hose, gas leak detector, reverse fl ow check
valve, refrigerant charge base, refrigerant recovery equipment)

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

the refrigerant may deteriorate.

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

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

conventional 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 into the refrigerant cycle, the refrigerant may

deteriorate.

1.3. Before installation

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 signifi cantly reduce the performance of

the air conditioner or damage its parts.

•

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

- 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 or over things that are subject to water

•
damage.

- 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.

1.4. Before installation (relocation) ­electrical 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.

•

Never connect in reverse phases.
Never connect the Power Line L1, L2, and L3 to Terminal N.

- If the unit is miss wired, when power is supplied, some electrical parts will
be damaged.

•

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 fi re.

•

Install a leak circuit breaker, as required.

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

•

Use power line cables of suffi cient current carrying capacity and rating.

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

•

Use only a circuit breaker and fuse of the specifi ed capacity.

- A fuse or circuit breaker of a larger capacity, or the use of a substitute
simple steel or copper wire may result in a general unit failure or fi re.

•

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 transporting the product.

- One person should not carry the product. Its weight is in excess of 20kg.

- Some products use PP bands for packaging. Do not use any PP bands as
a means of transportation. It is dangerous.

- Do not touch the heat exchanger fi ns. Doing so may cut your fi ngers.

- When transporting the outdoor unit, support it at the specifi ed 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 has not been 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 irreversible damage to internal parts. Keep the power switch
turned on during the operational season. Make sure of the phase order of
power supply and voltage between each phase.

•

Do not touch the switches with wet fi ngers.

- Touching a switch with wet fi ngers can result in an electric shock.

•

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

- During and immediately after operation, the refrigerant pipes may be hot
or cold, depending on the condition of the refrigerant fl owing 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 5 minutes before turning off the power. Otherwise,
drainage water leakage or mechanical failure of sensitive parts may occur.

•

Do not touch the surface of the compressor during servicing.

- If unit is connected to a supply and not running, the crank case heater
located at the base of the compressor may still be operating.

2. About the product

•

This unit uses R410A-type refrigerant.

•

Piping for systems using R410A may be different from that for systems using
conventional refrigerant because the design pressure in systems using
R410A is higher. Refer to the Data Book for more information.

•

Some of the tools and equipment used for installation with systems that use
other types of refrigerant cannot be used with the systems using R410A.
Refer to the Data Book for more information.

10

Do not use the existing piping, as it contains chlorine, which is found in

•
conventional refrigerating machine oil and refrigerant. This chlorine will
deteriorate the refrigerant machine oil in the new equipment. The existing
piping must not be used as the design pressure in systems using R410A
is higher than that in the systems using other types of refrigerant and the
existing pipes may burst.

Caution:

•

Do not vent R410A into the atmosphere.

•

R410A is a Fluorinated Greenhouse gas, covered by the Kyoto Protocol
with a Global Warming Potential (GWP) = 1975.