Tabla De Contenido; Before Installation; The Following Should Always Be Observed For Safety - Mitsubishi Electric MLZ-KP25VF Manual De Instalación

CONTENTS
1. BEFORE INSTALLATION . .................... 1
2. INDOOR UNIT INSTALLATION . ........... 4
3. FLARING WORK AND PIPE
CONNECTION ..................................... 7
4. TEST RUN............................................ 9
5. GRILLE (OPTION) INSTALLATION ..... 9

1. BEFORE INSTALLATION

MEANINGS OF SYMBOLS DISPLAYED ON INDOOR UNIT AND/OR OUTDOOR UNIT
WARNING
(Risk of fire)
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 specified 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.
I Do not install the unit by yourself (user).
Incomplete installation could cause fire or electric
shock, injury due to the unit falling, or leakage of
water. Consult the dealer from whom you purchased
the unit or a qualified installer.
I Perform the installation securely referring to
the installation manual.
Incomplete installation could cause fire or electric
shock, injury due to the unit falling, or leakage of
water.
I When installing the unit, use appropriate pro-
tective equipment and tools for safety.
Failure to do so could cause injury.
I 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.
I Electrical work should be performed by a
qualified, experienced electrician, according
to the installation manual. Be sure to use an
exclusive circuit. Do not connect other electri-
cal appliances to the circuit.
If the capacity of the power circuit is insufficient or
there is incomplete electrical work, it could result in
a fire or an electric shock.
I 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.
I Do not damage the wires by applying excessive
pressure with parts or screws.
Damaged wires could cause fire or electric shock.
I Be sure to cut off the main power in case of
setting up the indoor P.C. board or wiring
works.
Failure to do so could cause electric shock.
I Use the specified wires to connect the indoor
and outdoor units securely and attach the
wires firmly to the terminal block connecting
sections so the stress of the wires is not ap-
plied to the sections. Do not extend the wires,
or use intermediate connection.
Incomplete connecting and securing could cause
fire.
I Do not install the unit in a place where inflam-
mable gas may leak.
If gas leaks and accumulates in the area around the
unit, it could cause an explosion.
I 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 fire or an electric shock due to
defective contact, defective insulation, exceeding
the permissible current, etc.
En-1
6. PUMPING DOWN .............................. 10
7. CONNECTING AN INTERFACE (OPTION)
TO THE AIR CONDITIONER .................. 10
This installation manual describes only
for the indoor unit. Refer to the MXZ type
manual for outdoor unit set up.
This unit uses a flammable refrigerant.
If refrigerant leaks and comes in contact with fire or heating part, it will create harmful gas and there is risk of fire.
WARNING
I Be sure to use the parts provided or specified
parts for the installation work.
The use of defective parts could cause an injury or
leakage of water due to a fire, an electric shock, the
unit falling, etc.
I When plugging the power supply plug into the
outlet, make sure that there is no dust, clog-
ging, 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 fire. If loose parts are found on the power supply
plug, replace it.
I 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 fire or an electric shock
due to dust, water, etc.
I When installing, relocating, or servicing the
unit, make sure that no substance other than
the specified refrigerant (R32/R410A) enters
the refrigerant circuit.
Any presence of foreign substance such as air can
cause abnormal pressure rise and may result in
explosion or injury. The use of any refrigerant other
than that specified for the system will cause mechani-
cal failure, system malfunction, or unit breakdown. In
the worst case, this could lead to a serious impedi-
ment to securing product safety.
I 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.
If refrigerant leaks and comes in contact with fire or
heating part of such a fan heater, kerosene heater,
or cooking stove, it will create harmful gas. Provide
ventilation in accordance with EN378-1.
I 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.
I When pumping down the refrigerant, stop the
compressor before disconnecting the refriger-
ant 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 refrigera-
tion cycle could become abnormally high. This could
cause the pipes to burst or injury.
Required Tools for Installation
Phillips screwdriver Flare tool for R32, R410A
Level Gauge manifold for R32, R410A
Scale Vacuum pump for R32, R410A
Utility knife or scissors Charge hose for R32, R410A
75 mm hole saw Pipe cutter with reamer
Torque wrench Water bottle
Wrench (or spanner) 0.9 to 1.0 L water
(Could lead to death, serious injury, etc.)
I When installing the unit, securely connect the
refrigerant pipes before starting the compres-
sor.
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.
I Fasten a flare nut with a torque wrench as
specified in this manual.
If fastened too tight, a flare nut may break after a
long period and cause refrigerant leakage.
I The unit shall be installed in accordance with
national wiring regulations.
I When using a gas burner or other flame-pro-
ducing 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 fire
or heating part, it will create harmful gas and there
is risk of fire.
I Do not use means to accelerate the defrosting
process or to clean, other than those recom-
mended by the manufacturer.
I The appliance shall be stored in a room without
continuously operating ignition sources (for ex-
ample: open flames, an operating gas appliance
or an operating electric heater).
I Do not pierce or burn.
I Be aware that refrigerants may not contain an
odour.
I Pipe-work shall be protected from physical dam-
age.
I The installation of pipe-work shall be kept to a
minimum.
I Compliance with national gas regulations shall
be observed.
I Keep any required ventilation openings clear of
obstruction.
I Keep gas-burning appliances, electric heaters,
and other fire sources (ignition sources) away
from the location where installation, repair, and
other air conditioner work will be performed.
I The appliance shall be stored in a well-ventilated
area where the room size corresponds to the
room area as specified for operation.