Before Installation; Table Of Contents - Mitsubishi Electric MLZ-KP09NA Installation Manual

CoNtENts
1. BEFORE INSTALLATION . ........................... 1
2. INDOOR UNIT INSTALLATION . .................. 4
3. FLARING WORK AND PIPE
CONNECTION ............................................ 8
4. TEST RUN................................................. 10
5. GRILLE (OPTION) INSTALLATION .......... 10

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.
• Please report to your supply authority or obtain their consent before connecting this equipment to the power supply system.
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
protective 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, 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.
I Ground the unit correctly.
Do not connect the ground to a gas pipe, water
pipe, lightning rod or telephone ground. Defective
grounding 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 applied to the sections. Do not
extend the wires, or use intermediate con-
nection.
Incomplete connecting and securing could cause
fire.
I 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.
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.
I Depending on the installation area, install a
Ground Fault Interrupt (GFI) circuit breaker.
If the Ground Fault Interrupt (GFI) circuit breaker
is not installed, an electric shock could occur.
I Perform the drainage/piping work securely
according to the installation manual.
If there is defect in the drainage/piping work,
water could drip from the unit, and damage
household items.
En-1
6. PUMPING DOWN ..................................... 11
7. CONNECTING AN INTERFACE (OPTION)
TO THE AIR CONDITIONER .................... 11
This installation manual describes only for the
indoor unit. Refer to the MXZ type manual for
outdoor unit set up.
WARNING
I 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.
I 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.
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 (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.
I Do not discharge the refrigerant into the
atmosphere. Check that the refrigerant gas
does not leak after installation has been
completed. If refrigerant leaks during instal-
lation, ventilate the room.
If refrigerant comes in contact with a fire, harmful
gas could be generated.
If refrigerant gas leaks indoors, and comes into
contact with the flame of a fan heater, space
heater, stove, etc., harmful gases will be gener-
ated.
I 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.
CAUTION
I Do not touch the air inlet or the aluminum
fins of the outdoor unit.
This could cause injury.
Required tools for Installation
Phillips screwdriver
Level
Scale
Utility knife or scissors
2-15/16 in. (75 mm) hole saw
Torque wrench
Wrench (or spanner)
(Could lead to death, serious injury, etc.)
I 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.
I 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.
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 Do not use means to accelerate the defrost-
ing process or to clean, other than those
recommended by the manufacturer.
I the appliance shall be stored in a room
without continuously operating ignition
sources (for example: 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
damage.
I the installation of pipe-work shall be kept
to a minimum.
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 in-
stallation, repair, and other air conditioner
work will be performed.
(Could lead to serious injury in particular environments when operated incorrectly.)
I Do not install the outdoor unit where small
animals may live.
If small animals enter the unit and damage its
electrical parts, it could cause a malfunction,
smoke emission, or fire. Keep the area around
the unit clean.
Flare tool for R410A
Gauge manifold for R410A
Vacuum pump for R410A
Charge hose for R410A
Pipe cutter with reamer
Water bottle
0.9 to 1.0 L water