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- MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for mal-
functions 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-operat-
ing ignition device such as open flame, gas appliance, or electrical heater.
•
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 loca-
tion, 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.
•
If the air conditioner is installed in a small room or closed room, measures
must be taken to prevent the refrigerant concentration from exceeding the
safety limit even if the refrigerant should leak.
- Consult the dealer regarding the appropriate measures to prevent the safety
limit from being exceeded. Should the refrigerant leak and cause the safety
limit to be exceeded, hazards due to lack of oxygen in the room could result.
•
The appliance shall be stored so as to prevent mechanical damage from
occurring.
•
For installation and relocation work, follow the instructions in the installa-
tion manual and use tools and pipe components specifically made for
using with refrigerant specified in the outdoor unit installation manual.
•
When moving and reinstalling the air conditioner, consult the dealer or an
authorized technician.
- If the air conditioner is installed improperly, water leakage, electric shock, or
fire may result.
•
After completing installation work, make sure that refrigerant gas is not
leaking.
- If the refrigerant gas leaks and is exposed to a fan heater, stove, oven, or other
heat source, it may generate noxious gases.
•
Do not reconstruct or change the settings of the protection devices.
- If the pressure switch, thermal switch, or other protection device is shorted and
operated forcibly, or parts other than those specified by Mitsubishi Electric are
used, fire or explosion may result.
•
To dispose of this product, consult your dealer.
•
Do not use a leak detection additive.
•
If the supply cord is damaged, it must be replaced by the manufacturer, its
service agent or similarly qualified persons in order to avoid a hazard.
•
Servicing shall be performed only as recommended by the manufacturer.
•
This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience
and knowledge, unless they have been given supervision or instruction
concerning use of the appliance by a person responsible for their safety.
•
Children should be supervised to ensure that they do not play with the
appliance.
•
The installer and system specialist shall secure safety against leakage
according to local regulation or standards.
- The instructions in this manual may be applicable if local regulation are not
available.
•
Pay a special attention to the place, such as a basement, etc. where
refrigeration gas can stay, since refrigeration is heavier than the air.
•
This appliance is intended to be used by expert or trained users in shops,
in light industry and on farms, or for commercial use by lay persons.
1.2. Precautions for devices that use R32 refrigerant
Caution:
•
Do not use the existing refrigerant piping.
- The old refrigerant and refrigerator oil in the existing piping contains a large
amount of chlorine which may cause the refrigerator oil of the new unit to
deteriorate.
•
Use refrigerant piping made of C1220 (Cu-DHP) phosphorus deoxidized
copper as specified in the JIS H3300 "Copper and copper alloy seamless
pipes and tubes". In addition, be sure that the inner and outer surfaces of
the pipes are clean and free of hazardous sulphur, oxides, dust/dirt,
shaving particles, oils, moisture, or any other contaminant.
- Contaminants on the inside of the refrigerant piping may cause the refrigerant
residual oil to deteriorate.
•
Store the piping to be used during installation indoors and keep both ends
of the piping sealed until just before brazing. (Store elbows and other
joints in a plastic bag.)
- If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and
compressor trouble may result.
•
Use liquid refrigerant to fill the system.
- If gas refrigerant is used to seal the system, the composition of the refrigerant
in the cylinder will change and performance may drop.
8
•
Do not use a refrigerant other than R32.
- If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may
cause the refrigerator oil to deteriorate.
•
Use a vacuum pump with a reverse flow check valve.
- The vacuum pump oil may flow back into the refrigerant cycle and cause the
refrigerator oil to deteriorate.
•
Do not use the following tools that are used with conventional
refrigerants.
(Gauge manifold, charge hose, gas leak detector, reverse flow check
valve, refrigerant charge base, vacuum gauge, refrigerant recovery
equipment)
- If the conventional refrigerant and refrigerator oil are mixed in the R32, the
refrigerant may deteriorated.
- If water is mixed in the R32, the refrigerator oil may deteriorate.
- Since R32 does not contain any chlorine, gas leak detectors for conventional
refrigerants will not react to it.
•
Do not use a charging cylinder.
- Using a charging cylinder may cause the refrigerant to deteriorate.
•
Be especially careful when managing the tools.
- If dust, dirt, or water gets in the refrigerant cycle, the refrigerant may
deteriorate.
1.3. Before getting installed
Caution:
•
Do not install the unit where combustible gas may leak.
- If the gas leaks and accumulates around the unit, an explosion may result.
•
Do not use the air conditioner where food, pets, plants, precision
instruments, or artwork are kept.
- The quality of the food, etc. may deteriorate.
•
Do not use the air conditioner in special environments.
- Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of the
air conditioner or damage its parts.
•
When installing the unit in a hospital, communication station, or similar
place, provide sufficient protection against electromagnetic noise.
- The inverter equipment, private power generator, high-frequency medical
equipment, or radio communication equipment may cause the air conditioner
to operate erroneously, or fail to operate. On the other hand, the air conditioner
may affect such equipment by creating electromagnetic noise that disturbs
medical treatment or image broadcasting.
•
Do not install the unit on a structure that may cause leakage.
- When the room humidity exceeds 80% or when the drain pipe is clogged,
condensation may drip from the indoor unit. Perform collective drainage work
together with the outdoor unit, as required.
•
The indoor models should be installed the ceiling over than 2.5 m from
floor.
•
Do not install the unit above the cooking or food processing area.
1.4. Before getting installed (moved) - electrical work
Caution:
•
Ground the unit.
- Do not connect the ground wire to gas or water pipes, lightning rods, or
telephone ground lines. Improper grounding may result in electric shock.
•
Install the power cable so that tension is not applied to the cable.
- Tension may cause the cable to break and generate heat and cause a fire.
•
Install a leak circuit breaker, as required.
- If a leak circuit breaker is not installed, electric shock may result.
•
Use power line cables of sufficient current carrying capacity and rating.
- Cables that are too small may leak, generate heat, and cause a fire.
•
Use only a circuit breaker and fuse of the specified capacity.
- A fuse or circuit breaker of a larger capacity or a steel or copper wire may result
in a general unit failure or fire.
•
Do not wash the electrical parts of the air conditioner units.
- Washing them may cause an electric shock.
•
Be careful that the installation base is not damaged by long use.
- If the damage is left uncorrected, the unit may fall and cause personal injury or
property damage.
•
Install the drain piping according to this Installation Manual to ensure
proper drainage. Wrap thermal insulation around the pipes to prevent
condensation.
- Improper drain piping may cause water leakage and damage to furniture and
other possessions.
•
Be very careful about product transportation.
- Only one person should not carry the product if it weighs more than 20 kg.
- Some products use PP bands for packaging. Do not use any PP bands for a
means of transportation. It is dangerous.
- Do not touch the heat exchanger fins. Doing so may cut your fingers.
•
Safely dispose of the packing materials.
- Packing materials, such as nails and other metal or wooden parts, may cause
stabs or other injuries.
- Tear apart and throw away plastic packaging bags so that children will not play
with them. If children play with a plastic bag which was not torn apart, they face
the risk of suffocation.
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