Mitsubishi MFXZ-KW25-50VG Bruksanvisning

Mitsubishi luftkondisjonering MFXZ-KW25-50VG

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FLOOR TYPE AIR CONDITIONERS

MFXZ-KW25VG MFXZ-KW35VG MFXZ-KW50VG

REFRIGERANT

R32/R410A

English

INSTALLATION MANUAL

For INSTALLER

• This manual only describes the installation of indoor unit. When installing the

outdoor unit, refer to the installation manual of outdoor unit.

EN-1

CONTENTS

1. BEFORE INSTALLATION ....................................1

2. INDOOR UNIT INSTALLATION ...........................4

3. FLARE CONNECTION, PIPE CONNECTION ..... 8

4. TEST RUN ...........................................................8

5. PUMPING DOWN ................................................9

ENGLISH

Model names are indicated

in 1-3.

This installation manual describes

only for the indoor unit. Refer to

the outdoor unit installation manual

to set up outdoor units.

1. BEFORE INSTALLATION

MEANINGS OF SYMBOLS DISPLAYED ON INDOOR UNIT AND/OR OUTDOOR UNIT

WARNING

(Risk of re)

This unit uses a ammable refrigerant.

If refrigerant leaks and comes in contact with re or heating part, it will create harmful gas and there is risk of re.

Read the OPERATING INSTRUCTIONS carefully before operation.

Service personnel are required to carefully read the OPERATING INSTRUCTIONS and INSTALLATION MANUAL before operation.

Further information is available in the OPERATING INSTRUCTIONS, INSTALLATION MANUAL, and the like.

1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY

• Be sure to read “THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY” before installing the air conditioner.

• Be sure to observe the warnings and cautions specied here as they include important items related to safety.

• After reading this manual, be sure to keep it together with the OPERATING INSTRUCTIONS for future reference.

• When using this product in Australia, carefully read the Australian Institute of Refrigeration and Flammable refrigerants Safety Guide in Air conditioning and Heating (AIRAH) as well.

WARNING

(Could lead to death, serious injury, etc.)

Required Tools for Installation

Phillips screwdriver

Level

Scale

Utility knife or scissors

75 mm hole saw

Torque wrench

Wrench (or spanner)

Flare tool for R32, R410A

Gauge manifold for R32, R410A

Vacuum pump for R32, R410A

Charge hose for R32, R410A

Pipe cutter with reamer

Water bottle

0.9 to 1.0 L water

n Do not install the unit by yourself (user).

Incomplete installation could cause re or electric

shock, injury due to the unit falling, or leakage of water.

Consult the dealer from whom you purchased the unit

or a qualied installer.

n Perform the installation securely referring to the

installation manual.

Incomplete installation could cause re or electric

shock, injury due to the unit falling, or leakage of water.

n When installing the unit, use appropriate protec-

tive equipment and tools for safety.

Failure to do so could cause injury.

n Install the unit securely in a place which can bear

the weight of the unit.

If the installation location cannot bear the weight of the

unit, the unit could fall causing injury.

n Electrical work should be performed by a quali-

ed, experienced electrician, according to the

installation manual. Be sure to use an exclusive

circuit. Do not connect other electrical appliances

to the circuit.

If the capacity of the power circuit is insu󰀩cient or there

is incomplete electrical work, it could result in a re or

an electric shock.

n Earth the unit correctly.

Do not connect the earth to a gas pipe, water pipe,

lightning rod or telephone earth. Defective earthing

could cause electric shock.

n Do not damage the wires by applying excessive

pressure with parts or screws.

Damaged wires could cause re or electric shock.

n Be sure to cut o󰀨 the main power in case of set-

ting up the indoor P.C. board or wiring works.

Failure to do so could cause electric shock.

n Use the specied wires to connect the indoor and

outdoor units securely and attach the wires rmly

to the terminal block connecting sections so the

stress of the wires is not applied to the sections.

Do not extend the wires, or use intermediate con-

nection.

Incomplete connecting and securing could cause re.

n Do not install the unit in a place where ammable

gas may leak.

If gas leaks and accumulates in the area around the

unit, it could cause an explosion.

n Do not use intermediate connection of the power

cord or the extension cord and do not connect many

devices to one AC outlet.

It could cause a re or an electric shock due to defective

contact, defective insulation, exceeding the permissible

current, etc.

n Be sure to use the parts provided or specied

parts for the installation work.

The use of defective parts could cause an injury or

leakage of water due to a re, an electric shock, the

unit falling, etc.

n When plugging the power supply plug into the

outlet, make sure that there is no dust, clogging,

or loose parts in both the outlet and the plug.

Make sure that the power supply plug is pushed

completely into the outlet.

If there is dust, clogging, or loose parts on the power

supply plug or the outlet, it could cause electric shock

or re. If loose parts are found on the power supply

plug, replace it.

n Attach the electrical cover to the indoor unit and

the service panel to the outdoor unit securely.

If the electrical cover of the indoor unit and/or the service

panel of the outdoor unit are not attached securely, it

could result in a re or an electric shock due to dust,

water, etc.

n When installing, relocating, or servicing the

unit, make sure that no substance other than

the specied refrigerant (R32/R410A) enters the

refrigerant circuit.

Any presence of foreign substance such as air can

cause abnormal pressure rise and may result in ex-

plosion or injury. The use of any refrigerant other than

that specied for the system will cause mechanical

failure, system malfunction, or unit breakdown. In the

worst case, this could lead to a serious impediment to

securing product safety.

n Do not alter the unit.

It may cause re, electric shock, injury or water leakage.

n Do not discharge the refrigerant into the atmos-

phere. If refrigerant leaks during installation,

ventilate the room. Check that the refrigerant does

not leak after installation has been completed.

If refrigerant leaks and comes in contact with re or

heating part of such a fan heater, kerosene heater, or

cooking stove, it will create harmful gas.

n Use appropriate tools and piping materials for

installation.

The pressure of R32/R410A is 1.6 times more than R22.

Not using appropriate tools or materials and incomplete

installation could cause the pipes to burst or injury.

n When the refrigeration circuit has a leak, do not

execute pump down with the compressor. When

pumping down the refrigerant, stop the compres-

sor before disconnecting the refrigerant pipes.

If the refrigerant pipes are disconnected while the

compressor is running and the stop valve is open, air

could be drawn in and the pressure in the refrigeration

cycle could become abnormally high. This could cause

the pipes to burst or injury.

n When installing the unit, securely connect the

refrigerant pipes before starting the compressor.

If the compressor is started before the refrigerant pipes

are connected and when the stop valve is open, air

could be drawn in and the pressure in the refrigeration

cycle could become abnormally high. This could cause

the pipes to burst or injury.

n Install an earth leakage breaker depending on the

installation place.

If an earth leakage breaker is not installed, it could

cause electric shock.

n Fasten a are nut with a torque wrench as speci-

ed in this manual.

If fastened too tight, a are nut may break after a long

period and cause refrigerant leakage.

n The unit shall be installed in accordance with

national wiring regulations.

n When using a gas burner or other ame-producing

equipment, completely remove all of the refrigerant

from the air conditioner and ensure that the area is

well-ventilated.

If the refrigerant leaks and comes in contact in re or

heating part, it will create harmful gas and there is risk

of re.

n Do not use means to accelerate the defrosting

process or to clean, other than those recommended

by the manufacturer.

n The appliance shall be stored in a room without

continuously operating ignition sources (for exam-

ple: open ames, an operating gas appliance or an

operating electric heater).

n Do not pierce or burn.

Be aware that refrigerants may not contain an odour.

n Pipe-work shall be protected from physical damage.

n The installation of pipe-work shall be kept to a

minimum.

n Compliance with national gas regulations shall be

observed.

n Keep any required ventilation openings clear of

obstruction.

n Keep gas-burning appliances, electric heaters, and

other re sources (ignition sources) away from the

location where installation, repair, and other air

conditioner work will be performed.

n The appliance shall be stored in a well-ventilated

area where the room size corresponds to the room

area as specied for operation.

n Do not turn the breaker OFF except the case of

burning smell, or when performing maintenance

or inspection.

The power cannot be supplied to the refrigerant sensor

mounted in the indoor unit, and the sensor cannot detect

the refrigerant leakage. This may cause a re.

n In Australia, only technicians that possess the

appropriate license issued by the Australian Refrig-

eration Council (ARC) should install this product.

n Fix the connecting cable at the prescribed posi-

tion securely.

Incorrect installation may cause electric shock, re,

and/or malfunction.

Appropriate personal protective equipment

The installer should ensure they check the respective Work

Health and Safety (WHS) Act within their jurisdiction as the

requirements and obligations may di󰀨er.

EN-2

1-2. SELECTING THE INSTALLATION LOCATION

INDOOR UNIT

WARNING

This unit should be installed in rooms which exceed the oor space

specied in outdoor unit installation manual.

• Refer to outdoor unit installation manual.

Following conditions should be satised when installing indoor units:

• Where airow is not blocked.

• Where cool (or warm) air spreads over the entire room.

• Rigid wall without vibration.

• Where it is not exposed to direct sunshine. Do not expose to direct sunshine also

during the period following unpacking to before use.

• Where easily drained.

• At a distance 1 m or more away from your TV and radio. Operation of the air

conditioner may interfere with radio or TV reception. An amplier may be required

for the a󰀨ected device.

•

In a place as far away as possible from uorescent and incandescent lights. In order

to make the infrared remote control operate the air conditioner normally. The heat

from the lights may cause deformation or the ultraviolet may cause deterioration.

• Where the air lter can be removed and replaced easily.

• Where it is away from the other heat or steam source.

• Do not install the unit in the environment where any gas equipment for propane,

butane or methane, sprays such as bug killer, equipment which generates smoke,

paint etc., and chemicals are used, or in the place where sulfur-based gas is

generated.

• The refrigerant sensor mounted in the indoor unit may react to them, and display

an error of refrigerant leakage. This may cause the unit not to operate.

REMOTE CONTROLLER

Followings are preferable conditions to store a remote controller:

• Where it is easy to operate and easily visible.

• Where children cannot touch it.

• Select a position about 1.2 m above the oor and check that signals from the

remote controller are surely received by the indoor unit from that position (‘beep’

or ‘beep beep’ receiving tone sounds). After that, attach remote controller holder

to a pillar or wall and install wireless remote controller.

Note:

In rooms where inverter type uorescent lamps are used, the signal from the

wireless remote controller may not be received.

Note:

Avoid the following places for installation where air conditioner trouble is liable

to occur.

• Where ammable gas could leak.

• Where there is much machine oil.

• Where oil is splashed or where the area is lled with oily smoke (such as cook-

ing areas and factories, in which the properties of plastic could be changed

and damaged).

• Salty places such as the seaside.

• Where sulde gas is generated such as hot spring, sewage, waste water.

• Where there is high-frequency or wireless equipment.

• Where there is emission of high levels of VOCs, including phthalate compounds,

formaldehyde, etc., which may cause chemical cracking.

• The appliance shall be stored so as to prevent mechanical damage from oc-

curring.

CAUTION

(Could lead to serious injury in particular environments when operated incorrectly.)

n Perform the drainage/piping work securely accord-

ing to the installation manual.

If there is defect in the drainage/piping work, water could

drop from the unit, soaking and damaging household

goods.

n Do not touch the air inlet or the aluminum ns of

the outdoor unit.

This could cause injury.

n Please wear protective equipment when you touch

the base of the outdoor unit.

It could cause injury if you do not wear the protective

equipment.

n Do not install the outdoor unit where small animals

may live.

If small animals enter and touch the electric parts inside

the unit, it could cause a malfunction, smoke emission,

or re. Also, advise user to keep the area around the

unit clean.

n Do not operate the air conditioner during interior

construction and nishing work, or while waxing

the oor.

Before operating the air conditioner, ventilate the room

well after such work is performed. Otherwise, it may

cause volatile elements to adhere inside the air condi-

tioner, resulting in water leakage or scattering of dew.

n Do not install the unit in a place where smoke, gas,

or chemicals may ll.

The refrigerant sensor mounted in the indoor unit may

react to it, and display an error of refrigerant leakage.

n Be careful of the fan rotation when the breaker is

ON.

When the refrigerant sensor detects the refrigerant

leakage, the fan starts rotating automatically. This may

cause injury.

n When using any aerosol sprays for interior con-

struction, nishing work, or sealing a wall hole,

turn o󰀨 the breaker and ventilate the room well.

The refrigerant sensor may react to the gas in the

sprays, and it may cause misdetection.

M [kg] Amin [m

]

1.00

No requirements

1.10

1.20

1.30

1.40

1.50

1.60

1.70

1.80

1.84 3.63

1.90 3.75

2.00 3.95

2.10 4.15

2.20 4.34

2.30 4.54

2.40 4.74

If connecting to the outdoor unit that uses R32 refrigerant, install the indoor unit in a room with a oor area of Amin or more, corresponding to refrigerant M (factory-

charged refrigerant + locally add refrigerant). For refrigerant quantity and additional refrigerant charge, refer to the outdoor unit.

Refer to the installation manual of outdoor unit for refrigerant charge.

This manual only describes the installation of indoor unit.

When installing the outdoor unit, refer to the installation manual of outdoor unit.