Inhaltsverzeichnis; Before Installation - Mitsubishi Electric MLZ-KA25VA Installationsanleitung

CoNTENTS
1. BEFORE INSTALLATION . .................... 1
2. INDOOR UNIT INSTALLATION . ........... 3
3. FLARING WORK AND PIPE
CONNECTION ..................................... 6
4. TEST RUN............................................ 8
5. GRILLE (OPTION) INSTALLATION ..... 8

1. BEFoRE INSTALLATIoN

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.
n 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.
n 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.
n When installing the unit, use appropriate
protective 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
qualified, experienced electrician, accord-
ing 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 insufficient
or there is incomplete electrical work, it could
result in a fire 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 exces-
sive pressure with parts or screws.
Damaged wires could cause fire or electric
shock.
n 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.
n Use the specified wires to connect the in-
door and outdoor units securely and attach
the wires firmly to the terminal block con-
necting sections so the stress of the wires
is not applied to the sections. Do not extend
the wires, or use intermediate connection.
Incomplete connecting and securing could
cause fire.
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 Perform the drainage/piping work securely
according to the installation manual.
1-2. SELECTING THE INSTALLATIoN LoCATIoN
INDooR uNIT
• Where airflow is not blocked.
• Where cool air spreads over the entire room.
• 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 amplifier
may be required for the affected device.
• In a place as far away as possible from fluores-
cent and incandescent lights. In order to make
the infrared remote control operate the air con-
ditioner normally. The heat from the lights may
cause deformation or the ultraviolet may cause
deterioration.
En-1
6. PUMPING DOWN ................................ 9
7. CONNECTING AN INTERFACE
(OPTION) TO THE AIR CONDITIONER . .. 9
This installation manual describes only
for the indoor unit. Refer to the MXZ type
manual for outdoor unit set up.
WARNING
n Do not install the unit in a place where
inflammable 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 fire 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-
fied 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.
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 fire. 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 fire 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 specified refrigerant (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
mechanical failure, system malfunction, or unit
breakdown. In the worst case, this could lead to
a serious impediment to securing product safety.
CAUTION
(Could lead to serious injury in particular environments when operated incorrectly.)
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
fins of the outdoor unit.
This could cause injury.
• Where the air filter can be removed and replaced easily.
• Where it is away from the other heat or steam source.
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 posi-
tion ('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 fluorescent lamps
are used, the signal from the wireless remote
controller may not be received.
Required Tools for Installation
Phillips screwdriver Flare tool for R410A
Level Gauge manifold for R410A
Scale Vacuum pump for R410A
Utility knife or scissors Charge hose for 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.)
n Do not discharge the refrigerant into the
atmosphere. If refrigerant leaks during instal-
lation, ventilate the room.
If refrigerant comes in contact with a fire, harm-
ful gas could be generated. Refrigerant leakage
may cause suffocation. Provide ventilation in
accordance with EN378-1.
n Check that the refrigerant gas does not leak
after installation has been completed.
If refrigerant gas leaks indoors, and comes into
contact with the flame of a fan heater, space
heater, stove, etc., harmful substances will be
generated.
n use appropriate tools and piping materials
for installation.
The pressure of 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 pumping down the refrigerant, stop
the compressor 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 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.
n The unit shall be installed in accordance
with national wiring regulations.
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 malfunc-
tion, smoke emission, or fire. Also, advise user
to keep the area around the unit clean.
Note:
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.