Mitsubishi Electric MLZ-KP25VF User manual

CEILING CASSETTE TYPE AIR CONDITIONERS
MLZ-KP25VF MLZ-KP35VF MLZ-KP50VF
REFRIGERANT
R32/R410A
English
INSTALLATION MANUAL

EN-1
EN
FOR INSTALLER
1. BEFORE INSTALLATION
WARNING
Do not install the unit by yourself (user).
-
Perform the installation securely referring to the
installation manual.
When installing the unit, use appropriate protec-
tive equipment and tools for safety.
Install the unit securely in a place which can bear
the weight of the unit.
Electrical work should be performed by a quali-
circuit. Do not connect other electrical appliances
to the circuit.
Earth the unit correctly.
pressure with parts or screws.
Be sure to cut off the main power in case of set-
ting up the indoor P.C. board or wiring works.
to the terminal block connecting sections so the
stress of the wires is not applied to the sections.
-
nection.
gas may leak.
Do not use intermediate connection of the power
devices to one AC outlet.
parts for the installation work.
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.
Attach the electrical cover to the indoor unit and
the service panel to the outdoor unit securely.
When installing, relocating, or servicing the
unit, make sure that no substance other than
refrigerant circuit.
-
Do not alter the unit.
Do not discharge the refrigerant into the atmos-
phere. If refrigerant leaks during installation, ven-
tilate the room. Check that the refrigerant does not
leak after installation has been completed.
Use appropriate tools and piping materials for
installation.
When pumping down the refrigerant, stop the
compressor before disconnecting the refrigerant
pipes.
When installing the unit, securely connect the
refrigerant pipes before starting the compressor.
-
The unit shall be installed in accordance with
national wiring regulations.
equipment, completely remove all of the refrigerant
from the air conditioner and ensure that the area is
well-ventilated.
Do not use means to accelerate the defrosting
process or to clean, other than those recommended
by the manufacturer.
The appliance shall be stored in a room without
-
operating electric heater).
Do not pierce or burn.
Be aware that refrigerants may not contain an odour.
Pipe-work shall be protected from physical damage.
The installation of pipe-work shall be kept to a
minimum.
Compliance with national gas regulations shall be
observed.
Keep any required ventilation openings clear of
obstruction.
Keep gas-burning appliances, electric heaters, and
location where installation, repair, and other air
conditioner work will be performed.
The appliance shall be stored in a well-ventilated
area where the room size corresponds to the room
WARNING
ENGLISH
English is
original.
CONTENTS
9
9
Required Tools for Installation

EN-2
EN
This manual only describes the installation of indoor unit.
When installing the outdoor unit, refer to the installation manual of outdoor unit.
1-2. SELECTING THE INSTALLATION LOCATION
INDOOR UNIT
•
REMOTE CONTROLLER
Note:
Note:
-
• -
1-3. SPECIFICATIONS
-
CAUTION
Install an earth leakage breaker depending on the
installation place.
-
ing to the installation manual.
the outdoor unit.
Do not install the outdoor unit where small animals
may live.
Do not operate the air conditioner during interior
-
WARNING

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ACCESSORIES
* Note:
Service space
WARNING
piping.
IMPORTANT NOTES

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2-1. CEILING OPENINGS AND SUSPENSION BOLT
INSTALLATION LOCATIONS
2. INDOOR UNIT INSTALLATION

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2-2. HOLE DRILLING
Unit suspension procedures
in
*
2-3. DRAIN PIPING

EN-6
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-

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3-1. PIPING WORK
Note:
3. FLARING WORK AND PIPE CONNECTION
[When using pipe with super insulating material]

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3-3. PIPE CONNECTION
Indoor unit connection
Outdoor unit connection
When using pipe with super insulating material
Note:
3-2. FLARING WORK
-
90°
-
A
When installing the unit, securely connect the refrigerant
pipes before starting the compressor.
[When using pipe with super
insulating material]
WARNING
WARNING
not allowed indoors.
When connecting the refrigerant piping by brazing,
prior to connecting indoor unit to outdoor unit.

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-
Checking the remote (infrared) signal reception
Water drainage check
Caution:
To the user
Emergency
operation switch
(E.O. SW)
5. GRILLE (OPTION) INSTALLATION

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EN
6. PUMPING DOWN
When pumping down the refrigerant, stop the compressor before disconnecting
the refrigerant pipes. The compressor may burst if air etc. get into it.
WARNING
WARNING