Mitsubishi Electric CAHV-R450YA-HPB Installation & Operation Manual page 4

CAUTION
To reduce the risk of injury, do not carry the product by the
PP bands that are used on some packages.
Installation
WARNING
Do not install the unit where there is a risk of leaking
flammable gas.
If flammable gas accumulates around the unit, it may ignite
and cause a fire or explosion.
Properly dispose of the packing materials.
Plastic bags pose suffocation hazard to children.
The unit should be installed only by personnel certified
by Mitsubishi Electric according to the instructions
detailed in the Installation/Operation Manual.
Improper installation may result in refrigerant leakage, water
leakage, injury, electric shock, or fire.
Periodically check the installation base for damage.
If the unit is left on a damaged base, it may fall and cause
injury.
Remove packing materials from the unit before operating
the unit. Note that some accessories may be taped to the
unit. Properly install all accessories that are required.
Failing to remove the packing materials or failing to install
required accessories may result in refrigerant leakage,
oxygen starvation, smoke, or fire.
CAUTION
Do not install the unit on or over things that are
vulnerable to water damage.
When the indoor humidity exceeds 80% or if the drain water
outlet becomes clogged, condensation may drip from the
indoor unit onto the ceiling or floor.
Pipe installation
WARNING
To prevent explosion, do not heat the unit with refrigerant gas
in the refrigerant circuit.
CAUTION
Check that no substance other than the specified
refrigerant (R454C) is present in the refrigerant circuit.
Infiltration of other substances may cause the pressure to
rise abnormally high and cause the pipes to explode.
To keep the ceiling and floor from getting wet due to
condensation, properly insulate the pipes.
Piping work should be performed by the dealer or
qualified personnel according to the instructions
detailed in the Installation Manual.
Improper piping work may cause water leakage and damage
the furnishings.
Observe the restrictions on the maximum weight that a
person can lift, which is specified in local regulations.
Consult your dealer and take appropriate measures to
safeguard against refrigerant leakage and resultant oxygen
starvation. An installation of a refrigerant gas detector is
recommended.
Any additional parts must be installed by qualified personnel.
Only use the parts specified by Mitsubishi Electric.
Take appropriate safety measures against wind gusts and
earthquakes to prevent the unit from toppling over and
causing injury.
Be sure to install the unit horizontally, using a level.
If the unit is installed at an angle, it may fall and cause injury
or cause water leakage.
The unit should be installed on a surface that is strong
enough to support its weight.
As an anti-freeze, use ethylene glycol or propylene
glycol diluted to the specified concentration.
The use of other types of anti-freeze solution may cause
corrosion and resultant water leakage. The use of flammable
anti-freeze may cause fire or explosion.
All drainage work should be performed by the dealer or
qualified personnel according to the instructions
detailed in the Installation Manual.
Improper drainage work may cause rain water or drain water
to enter the buildings and damage the furnishings.
Check for refrigerant leakage at the completion of
installation.
If leaked refrigerant comes in contact with a heat source,
toxic gas may be generated.
To keep the ceiling and floor from getting wet due to
condensation, properly insulate the pipes.
Do not open the control box cover while charging
refrigerant.
• If the refrigerant leaks, a fire may result.
4