Mitsubishi Electric ECOV-X37VA Manuel D'installation page 8

Install the unit horizontally, using a level. A unit
installed on an inclined surface can result in wa-
ter leakage or topple over and cause injury.
CAUTION
To reduce the risk of rain water or drain water
from entering the room and damaging the interi-
or, drainage work must be performed by your
dealer or qualified personnel according to the in-
structions detailed in the Installation Manual.
[4] Piping Work
Piping Work
WARNING
Use caution when operating the refrigerant ser-
vice valve. Refrigerant may spew out and cause
oxygen starvation, frost bites, or injuries.
To reduce the risk of refrigerant catching fire
and causing burns, remove the refrigerant gas
and the residual refrigerant oil in the pipes be-
fore heating them.
To reduce the risk of pipe damage, refrigerant
leakage, or oxygen deprivation, use pipes that
meet the pipe thickness specifications, which
vary by the type of refrigerant used, pipe diame-
ter, and pipe material.
Evacuate the refrigerant circuit using a vacuum
pump. Allowing the type of gasses other than
the one specified to infiltrate into the refrigerant
circuit may result in a burst or an explosion.
To reduce the risk of explosion or deterioration
of refrigerant oil caused by chloride, do not use
oxygen, flammable gas, or refrigerant that con-
tains chloride as a pressurizing gas.
CAUTION
To reduce the risk of a burst or an explosion due
to an abnormal pressure rise, do not allow any
substances other than R744 (such as air) to en-
ter the refrigerant circuit.
[5] Wiring Work
Wiring Work
WARNING
Replace damaged circuit boards immediately.
Continued use of damaged circuit boards may
result in abnormal heat generation or fire.
To reduce the risk of wire breakage, overheating,
smoke, or fire, keep undue force from being ap-
plied to the wires.
WT09614X03_GB
To reduce the risk of injury from units falling or
falling over, install the unit on a surface that is
strong enough to support its weight.
To prevent a burst or an explosion, do not heat
the unit with refrigerant gas in the refrigerant cir-
cuit.
To reduce the risk of oxygen deprivation or gas
poisoning, check for gas leakage with an appro-
priate leak detector, and keep fire sources away.
Conduct an air-tightness test at the pressure
specified on the unit and in the installation man-
ual. Conducting an air tightness test above the
specified pressure may result in damage to the
unit and resultant refrigerant leakage, which can
cause oxygen deprivation.
Insulate pipe connections after completing the
air tightness test. Performing an air tightness
test with the pipe being insulated may lead to
failure to detect refrigerant leakage and cause
oxygen deprivation.
To reduce the risk of pipe damage and resultant
refrigerant leakage or oxygen deprivation, keep
the field-installed pipes out of contact with the
edges of components.
To keep the ceiling and floor from getting wet
due to condensation, properly insulate the
pipes.
To reduce the risk of wire breakage, overheating,
smoke, or fire, properly secure the wires in place
and provide adequate slack in the wires so as
not to stress the terminals.
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