Mitsubishi Electric MXZ-3C24NA2 Notice D'installation page 2

C NTENTS
2. OUTDOOR UNIT INSTALLATION ............................................... 4
5. PUMPING DOWN ........................................................................ 7
. BEF E INSTA
- . T E F WING S
WARNING
■ Do not install the unit by yourself (user).
■ Perform the installation securely referring to the installation manual.
■ When installing the unit, use appropriate protective equipment and tools
for safety.
■ 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
■ Perform electrical work according to the installation manual and be sure to
use an exclusive circuit. Do not connect other electrical appliances to the
circuit.
■ Do not damage the wires by applying excessive pressure with parts or
screws.
■ Be sure to cut off the main power in case of setting up the indoor P.C.
board or wiring works.
■
se the speci ed wires to connect the indoor and outdoor units securely
and attach the wires rmly to the terminal block connecting sections so
the stress of the wires is not applied to the sections.
■ Do not install the unit in a place where in ammable gas may leak.
explosion.
■ Do not use intermediate connection of the power cord or the extension
cord and do not connect many devices to one AC outlet.
insulation, exceeding the permissible current, etc.
■ Be sure to use the parts provided or speci ed 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.
If there is dust, clogging, or loose parts on the power supply plug or the outlet, it
plug, replace it.
■ Attach the electrical cover to the indoor unit and the service panel to the
outdoor unit securely.
CAUTION
■ Perform the drainage/piping work securely according to the installation
manual.
■ Do not touch the air inlet or the aluminum ns of the outdoor unit.
-2. SPECIFICATI NS
Power supply
Model
*2 Use a copper pipe or a copper-alloy seamless pipe.
*4 Refrigerant pipe bending radius must be 4 in. (100 mm) or more.
cause dew drippage.
En-1
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ATI N
U D A WA S BE BSE
Max. pipe length per indoor
Frequency
equired Tools for Installation
Scale
Torque wrench
Wrench (or spanner)
ED F SAFET
to dust, water, etc.
■ When installing, relocating, or servicing the unit, make sure that no sub-
stance other than the speci ed refrigerant ( 4 0A) enters the refrigerant
circuit.
Any presence of foreign substance such as air can cause abnormal pressure
to securing product safety.
■ Do not discharge the refrigerant into the atmosphere. If refrigerant leaks
during installation, ventilate the room.
■ Check that the refrigerant gas does not leak after installation has been
completed.
■ 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
■ When pumping down the refrigerant, stop the compressor before discon-
necting the refrigerant pipes.
If the refrigerant pipes are disconnected while the compressor is running and
tion cycle could become abnormally high. This could cause the pipes to burst
■ 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
refrigeration cycle could become abnormally high. This could cause the pipes
■ Fasten a are nut with a torque wrench as speci ed in this manual.
■ The unit shall be installed in accordance with national wiring regulations.
■ Ground the unit correctly.
Do not connect the ground to a gas pipe, water pipe, lightning rod or telephone
■ Be sure to install a Ground Fault Interrupt (GFI) circuit breaker.
■ 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
area around the unit clean.
Pipe length and height difference
Max. no. of bends per in-
Max. height difference
49 ft. (15 m)
is required. (No additional charge is required for pipe length less than 98 ft.
Additional refrigerant (ft.) = A ×
wrench
Flare tool for R410A
Gauge manifold for R410A
Charge hose for R410A
Pipe cutter with reamer
(pipe length (ft.) – 98)
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