Mitsubishi Heavy Industries FDCW60VNX-A, Installation Manual

Page: 107 / 288

the box. Install the service panel correctly.
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Do not perform brazing work in the
airtight room.
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Use the prescribed pipes, flare nuts
and tools for R410A.
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Tighten the flare nut by using double
spanners and torque wrench according
to prescribed method. Be sure not to
tighten the flare nut too much.
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Do not open the service valves for
liquid line and gas line until completed
refrigerant piping work, air tightness
test and evacuation.
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Do not put the drainage pipe directly into
drainage channels where poisonous
gases such as sulphide gas can occur.
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Only use prescribed optional parts.
The installation must be carried out by
the qualified installer.
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Do not run the unit with removed panels
or protections
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Be sure to fix up the service panels.
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Do not perform any repairs or modifi-
cations by yourself. Consult the dealer
if the unit requires repair.
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Safety precautions
Hang up the unit at the specified points
with ropes which can support the
weight in lifting for portage. And to
avoid jolting out of alignment, be sure to
hang up the unit at 4-point support.
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Install the unit in a location with good
support.
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Ensure the unit is stable when installed,
so that it can withstand earthquakes
and strong winds.
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Ensure that no air enters in the refriger-
ant circuit when the unit is installed
and removed.
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The electrical installation must be
carried out by the qualified electrician
in accordance with “the norm for
electrical work” and “national wiring
regulation”, and the system must be
connected to the dedicated circuit.
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Be sure to shut off the power before
starting electrical work.
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Be sure to use the cables conformed
to safety standard and cable ampacity
for power distribution work.
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Use the prescribed cables for electrical
connection, tighten the cables securely
in terminal block and relieve the
cables correctly to prevent overloading the
terminal blocks.
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Arrange the wiring in the control box so
that it cannot be pushed up further into