Selecting The Installation Location; Specifications - Mitsubishi Electric MSZ-HR25VF Installation Manual

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Install an earth leakage breaker depending on the
installation place.
If an earth leakage breaker is not installed, it could cause
electric shock.
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Perform the drainage/piping work securely ac-
cording to the installation manual.
If there is defect in the drainage/piping work, water could
drop from the unit, soaking and damaging household
goods.
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Do not touch the air inlet or the aluminum fins of
the outdoor unit.
This could cause injury.
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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.

1-2. SELECTING THE INSTALLATION LOCATION

INDOOR UNIT
The unit should be installed in rooms which have the floor space specified
below.
HR25: 1.7 m² or larger HR35: 2.0 m² or larger
HR42: 2.5 m² or larger HR50: 2.7 m² or larger
As for the details, please refer to the Installation Service Manual for New
Refrigerant System.
When the indoor unit is connected to the multi type outdoor unit of R32
refrigerant, please consult your dealer about the floor space specified.
• Where airflow 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 condi-
tioner may interfere with radio or TV reception. An amplifier may be required for the
affected device.
• In a place as far away as possible from fluorescent 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 filter can be removed and replaced easily.
• Where it is away from the other heat or steam source.
For Wi-Fi interface
• Please ensure that the Router supports the WPA2-AES encryption setting before
commencement of the installation of this indoor unit equipped with the Wi-Fi interface.
• The End user should read and accept the terms and conditions of the Wi-Fi service
before commencement of the installation of this indoor unit equipped with the Wi-Fi
interface.
• This indoor unit equipped with the Wi-Fi interface should not be installed and con-
nected to any Mitsubishi Electric system which is to provide application critical cooling
or heating.
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 floor 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). When the remote controller holder is supplied, install
it at a position from which the indoor unit can receive signals.

1-3. SPECIFICATIONS

Model
Indoor unit Outdoor unit
MSZ-HR25VF(K) MUZ-HR25VF
MSZ-HR35VF(K) MUZ-HR35VF
MSZ-HR42VF(K) MUZ-HR42VF
MSZ-HR50VF(K) MUZ-HR50VF
*1 Connect to the power switch which has a gap of 3 mm or more when open to interrupt the source power phase. (When the
power switch is shut off, it must interrupt all phases.)
*2 Use wires in conformity with design 60245 IEC 57.
*3 Never use pipes with thickness less than specified. The pressure resistance will be insufficient.
*4 Use a copper pipe or a copper-alloy seamless pipe.
*5 Be careful not to crush or bend the pipe during pipe bending.
*6 Refrigerant pipe bending radius must be 100 mm or more.
*7 If pipe length exceeds 7 m, additional refrigerant (R32) charge is required. (No additional charge is required for pipe length
less than 7 m.)
Additional refrigerant = A × (pipe length (m) – 7)
*8 Insulation material : Heat resisting foam plastic 0.045 specific gravity
*9 Be sure to use the insulation of specified thickness. Excessive thickness may cause incorrect installation of the indoor unit
and insufficient thickness may cause dew drippage.
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Do not install the outdoor unit where small ani-
mals may live.
If small animals enter and touch the electric parts inside
the unit, it could cause a malfunction, smoke emission,
or fire. Also, advise user to keep the area around the
unit clean.
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Do not operate the air conditioner during interior
construction and finishing work, or while waxing
the floor.
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.
WARNING
Power supply *1
Rated Voltage Frequency
230 V 50 Hz
CAUTION
(Could lead to serious injury in particular environments when operated incorrectly.)
Note:
In rooms where inverter type fluorescent lamps are used, the signal from the wireless
remote controller may not be received.
OUTDOOR UNIT
• Where it is not exposed to strong wind. If the outdoor unit is exposed to a wind during
defrosting, the defrosting time will be longer.
• Where airflow is good and dustless.
• Where rain or direct sunlight can be avoided as much as possible.
• Where neighbours are not annoyed by operation sound or hot (or cool) air.
• Where rigid wall or support is available to prevent the increase of operation sound or
vibration.
• Where there is no risk of combustible gas leakage.
• When installing the unit at a high level, be sure to secure the unit legs.
• Where it is at least 3 m away from the antenna of TV set or radio. Operation of the
air conditioner may interfere with radio or TV reception in areas where reception is
weak. An amplifier may be required for the affected device.
• Install the unit horizontally.
• Please install it in an area not affected by snowfall or blowing snow. In areas with
heavy snow, please install a canopy, a pedestal and/or some baffle boards.
Note:
It is advisable to make a piping loop near outdoor unit so as to reduce vibration
transmitted from there.
Note:
When operating the air conditioner in low outside temperature, be sure to follow the
instructions described below.
• Never install the outdoor unit in a place where its air inlet/outlet side may be exposed
directly to wind.
• To prevent exposure to wind, install the outdoor unit with its air inlet side facing the wall.
• To prevent exposure to wind, it is recommended to install a baffle board on the air
outlet side of the outdoor unit.
Avoid the following places for installation where air conditioner trouble is liable to occur.
• Where flammable gas could leak.
• Where there is much machine oil.
• Where oil is splashed or where the area is filled with oily smoke (such as cooking areas
and factories, in which the properties of plastic could be changed and damaged).
• Salty places such as the seaside.
• Where sulfide 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 occurring.
Wire specifications
Breaker Indoor/outdoor
Power supply *2
capacity connecting wire *2
3-core
10 A
1.0 mm²
3-core
12 A
1.5 mm²
For Wi-Fi interface
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To prevent damage from static electricity, touch
a nearby metal body to discharge static electric-
ity from yourself before touching the indoor unit
equipped with the Wi-Fi interface.
Static electricity from the human body may damage the
Wi-Fi interface unit.
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Do not use the indoor unit equipped with the
Wi-Fi interface nearby other wireless devices,
microwaves, cordless phones, or facsimiles.
It can cause malfunctions.
Pipe size
(thickness *3, *4)
Gas / Liquid
4-core ø9.52 / 6.35 mm
1.0 mm² (0.8 mm)
Pipe length and height difference
Max. pipe length
Max. height difference
Max. number of bends *5, *6
Refrigerant adjustment A *7
Insulation thickness *8, *9
Maximum amount of
refrigerant charge *7
660 g
710 g
960 g
1060 g
20 m
12 m
10
20 g/m
8 mm