Mitsubishi Electric Mr. SLIM SEZ-M25DA Manuel D'installation page 10

1. Safety precautions
• When installing, relocating, or servicing the air conditioner, use only the
specified refrigerant written on the outdoor unit to charge the refrigerant
lines. Do not mix the refrigerant with any other refrigerant, and do not allow
air to remain in the lines.
- If air is mixed with the refrigerant, then it may cause abnormal high pressure in
the refrigerant lines, resulting in an explosion and other hazards.
- 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.
- It may also be in violation of applicable laws.
- MITSUBISHI ELECTRIC CORPORATION cannot be held responsible
for malfunctions or accidents resulting from the use of the wrong type of
refrigerant.
• This indoor unit should be installed in a room which is equal to or larger
than the floor space specified in the outdoor unit installation manual. Refer
to the outdoor unit installation manual.
• Only use means recommended by the manufacturer to accelerate the
defrosting process or to clean.
• This indoor unit shall be stored in a room that has no continuously-
operating ignition device such as open flame, gas appliance, or electrical
heater.
Caution:
• Perform grounding.
Do not connect the ground wire to a gas pipe, water pipe arrester or
telephone ground wire. Defective grounding could cause an electric shock.
• Do not install the unit in a place where an inflammable gas leaks.
If gas leaks and accumulates in the area surrounding the unit, it could
cause an explosion.
• Install a ground leakage breaker depending on the installation place (where
it is humid).
If a ground leakage breaker is not installed, it could cause an electric
shock.
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• Do not pierce a hole in or burn this indoor unit or refrigerant lines.
• Be aware that the refrigerant may be odour-free.
• Pipe-work shall be protected from physical damage.
• The installation of pipe-work shall be kept to a minimum.
• Compliance with national gas regulations shall be observed.
• Keep any required ventilation openings clear of obstruction.
• Do not use low temperature solder alloy when brazing the refrigerant pipes.
• When performing brazing work, be sure to ventilate the room sufficiently.
Make sure that there are no hazardous or flammable materials nearby.
When performing the work in a closed room, small room, or similar
location, make sure that there are no refrigerant leaks before performing
the work. If refrigerant leaks and accumulates, it may ignite or poisonous
gases may be released.
• For installation and relocation work, follow the instructions in the
installation manual and use tools and pipe components specifically made
for using with refrigerant specified in the outdoor unit installation manual.
• Perform the drainage/piping work securely according to the installation
manual.
If there is a defect in the drainage/piping work, water could drop from the
unit and household goods could be wet and damaged.
• Fasten a flare nut with a torque wrench as specified in this manual.
When fastened too tight, a flare nut may broken after a long period and
cause a leakage of refrigerant.