Mitsubishi Electric PRC- 8MYA, PRC-10MYA, PRC-12MYA, PRC-15MYA, PRC-20MYA Installation Manual
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MITSUBISHI ELECTRIC AIR CONDITIONERS
CONTENTS
1. Safety precautions.
2. Selection of installed place.
3. Space required around units.
4. Preparation before installation.
5. Installation of the unit.
6. Drain piping.
7. Electric wiring.
8. Before starting the trial run.
PAGE
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5
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Note
1. Please read this manual to have the correct, safe use before installation.
2. Please keep this manual in the place where it is always seen to use this manual
with "Operation manual" after reading.
3. The customer must not install and not transfer the unit by themselves.
(Safety and the function cannot be secured.)
INSTALLATION MANUAL
Service ref.
PRC- 8MYA(-03)
PRC-10MYA(-03)
PRC-12MYA(-03)
PRC-15MYA(-03)
PRC-20MYA(-03)
PRC-24MYA(-03)
PRC-32MYA(-03)
Model
PRC- 8MYA
PRC-10MYA
PRC-12MYA
PRC-15MYA
PRC-20MYA
PRC-24MYA
PRC-32MYA
Cooling only
1
Warning.
Use only optional parts authorized by Mitsubishi
Electric.
If the accessories are installed improperly, water leakage,
electric shock or fire may result.
Ask your dealer or an authorized company to install them.
Danger and the extent caused when wrong handling is done
are divided by displaying warning and attention and
are explained.
1. Safety precautions.
1)
Before doing electrical work.
1.1 Before installation.
The Installation Manual details the suggested installation method.
Any structural alteration necessary for installation must comply with
local building code requirements.
After you have read this manual, keep it and the Operation Manual
in a safe place for easy reference whenever a question arises.
If the unit is going to be operated by another person, make sure that
this manual is given to him or her.
The unit should not be installed by the user.
(Safety and the function cannot be secured)
Caution.
When installing the power lines, do not apply tension to
the cables.
The tighten or loosen the connections may cause generate heat
and cause fire.
When installing at a watery place, provide an electric
leak breaker.
Failure to mount the electric leak breaker may cause electric shock.
Ventilate the room if refrigerant leaks during Installation.
The refrigerant heated generates poisonous gas by decomposition
which can cause poisoning.
The unit must be installed on stable, level surface
in a place where there is no accumulation of snow,
leaves or rubbish.
The unit should be installed in a location where air and
noise emitted by the unit will not disturb the neighbors.
If the unit is loosely mounted, it may fall, and cause injury.
The terminal block cover of unit must be firmly attached
to prevent entry of dust and moisture.
Improper mounting of the cover cause electric shock or fire.
For the power lines, use standard cables of sufficient
current capacity.
Otherwise, current leakage, overheating or fire may occur.
Use breaker or fuse with proper capacity.
Make sure that each appliance has a main power switch.
Using a wire or copper wire instead of proper capacity can cause fire
or trouble.
Other appliances connected to the same line could cause an overload.
The unit must be properly earth connected.
Do not connect the earth wire to gas pipe, city water
pipe, lightning rod or telephone earth wire.
Improper earth connection may cause electric shock.
Ask your dealer or specialized subcontractor for
installation.
Conducting installation work by yourself improperly may cause
a fire, electric shock or water leakage.
For installation, conduct the work correctly by
following the Installation Manual.
Improper installation may cause a fire, electric shock or water leakage.
Use only the specified refrigerant (R-22) to charge
the refrigerant circuit.
Do not mix it with any other refrigerant and do not
allow air to remain in the circuit.
Air enclosed in the circuit can cause high pressure resulting in a
rupture and other hazards.
Arrange the configuration of wiring not to bring up
the panel and terminal cover, and fasten the panel and
terminal cover securely.
The poor mounting of the panel or terminal cover may cause the heat
generation of the terminal connection, a fire or electric shock.
Install the unit on a spot sufficiently durable against
the unit weight.
Insufficient durability can cause an injury by the falling down of unit.
All electrical work must be performed by licensed technician,
according to local regulations and the instructions given
in this manual.
Power lines with insufficient capacity or improper electric work may
result in electrical shock or fire.
Never repair the unit, remodel or transfer
it to another site by yourself.
If they are performed improperly, water leakage,
electric shock or fire may result.
If you need to have the unit repaired or moved,
consult your dealer.
After completing installation work, make sure that
refrigerant gas has not leaked.
If refrigerant gas has leaked and exposed to fan heater, stove, oven
and so on, it may generate noxious gases.
Please do the gas leakage inspection before starting.
Take a proper measure to suppress the critical
concentration of refrigerant, if leaked when installing
the unit in a small room.
The limit density is made not to be exceeded even if the refrigerant
leaks by any chance.
You are necessary to measure the ventilation in order to prevent the
accident.
If the refrigerant leaks, hypoxia accident may caused.
For the countermeasure to be taken, consult your dealer.
Use only the specified cables for wiring. The connections
must be made secured without tension the terminals.
Improper connection or fastening can cause a fire or electric shock.
The unit should be installed according to the
instructions in order to minimize the risk of damage
from earthquakes, typhoons or strong winds.
Improper installation work can cause an injury by the falling down of
the unit.
Before operating the unit ,make sure you read all the
"Safety precautions".
"Safety precautions" lists important points about safety.
Please be sure to follow them.
The display and its meaning are given below.
Warning
Erroneous handling gives a high possibility
to induce serious results such as death
or heavy injury.
Caution
Erroneous handling may induce serious
injury depending on the situation.
Warning.
Carefully read the labels affixed to the main unit.
The symbols used here represent that as follows.
Never do this.
Never touch without wearing glove on your hands.
Make sure to connect earth line.
2)
Before constructing the installation or transfer.
Do not leave the mounting base being damaged.
The damaged base may cause the falling down of the unit which
may give injury.
Install drain piping (hose) according to
this Installation Manual to ensure proper
drainage.
Improper drain piping (hose) may cause water
leakage and damage to furniture or other possessions.
Do not touch the metal edges inside the unit without
wearing glove on your hands.
Touching directly it may injure your hands.
Do not place objects under the units to avoid damage
of condensation.
When the room is high humidity or when the drain pipe is clogged,
water may drip from the unit.
Never install on the place where a combustible gas
might leak.
The gas may ignite or explode when the gas leaks and collects
in surroundings of the unit.
For special use as for foods, animals/plants, precision
equipment or art objects, the applicability should be
confirmed earlier.
As the use for the applications other than that
designed originally may result in the deterioration
of the quality.
Consult your dealer in this regard.
When the unit is installed at telecommunication centers
or hospitals, take a proper provision against noise.
The erroneous operation of air conditioner may be induced by inverter
equipment, independent power device, medical equipment or
communication equipment.
Do not operate the air conditioner without the air filter
set place.
Dust may accumulate, and cause a failure.
Do not touch the compressor or refrigerant
piping without wearing glove on your hands.
Touching directly such the parts can cause a burn
or frostbite as it becomes high or low temperature
according to the refrigerant state.
Do not handle the switch with wet hands.
Otherwise electric shock can be resulted.
The unit should be securely installed level surface.
When the unit inclines, it causes the water leak and the breakdown.
Please confirm the horizontal with the spirit level.
Do not use the unit under a special atmosphere.
Installing the unit at the following places may cause a trouble,
a place where is much machine oil, salt , humidity or dust,
spa district, a place full of sulfur gas, volatile gas, or corrosive gas,
a place near high frequency processing machine.
Do not wash the unit with water.
If washed with water, electric shock may be caused.
At emergency (if you smell something burning), stop
operation and turn the power source switch off.
Continuing the operation without eliminating the emergency state may
cause a machine trouble, fire, or electric shock.
Do not remove the panel or the fan guard from the unit
when it is running.
You could be injured if you touch rotating, hot or high-voltage parts .
Process the packing material surely.
Be sure to safety dispose the packing materials.
Packing materials, such as catches and other metal or wooden parts,
may cause stabs or other injuries.
Tear off and discard plastic packing bags so that children will not play
any of them.
If children play with a plastic bags which was not torn off, it may cause
a risk of suffocation.
2
The base and attachments of the unit should be periodically
checked for looseness, cracks or other damage.
If such defects are left uncorrected, the unit may fall and cause personal
injury or property damage.
3)
Before starting.
2. Selection of installed place.
Select space for installing unit, which will meet the following
conditions.
Please pay attention to the refrigerant (Freon gas).
A non flammable, non-toxic, odourless refrigerant is used for this air
conditioner.
The refrigerant is collected on the floor side in the room because the
specific gravity are larger than air. And, it causes the hypoxia accident.
When the refrigerant gas leaks by any chance, the user must ventilates
air enough by stopping the drive of the unit and opening the door.
Place where no direct thermal radiation from other heat sources.
Place where no possibility of short cycle operations caused by exhaust
heat from unit.
Place where no possibility of annoying neighbors by noise from unit.
Place where no exposition to strong wind.
Place where no possibility of snow wind.
Place where with strength which bears weight unit.
Because of the possibility of fire, do not install unit to the space where
generation, inflow, stagnation, and leak of combustible gas is expected.
Avoid unit installation in a place where acidic spray (sulfur) are often used.
Place without dispersion of oil and steam.
Remote controller is not allowed to install for the place
where direct sunshine strikes.
Remote controller should be pushed with finger.
It occasionally causes the electric shock and the breakdown.
Please do not use the unit in the following places.
Place where a lot of oil (The machine oil is contained), moistures,
and dust exist.
Place where a lot of salinity such as beach districts exists.
Place where sulfur gas, volatile gas, and corroded gas are filled.
Place where acid solution is frequently used.
Place where special spray is frequently used.
Hot spring zone.
Near machine (high cycle welding machine etc.) generating high cycle.
Place where ventilation entrance of unit is closed by snowfall.
The main body might corrode when the unit is used in such a place,
the refrigerant leak, the performance of the unit decrease remarkably,
and it cause the damage of parts of the unit.
Be very careful about unit transportation.
When carrying in unit, be sure to support it at four points.
Carrying in and lifting with 3-point support may make unit unstable,
resulting in a fall of it.
The unit should not be carried by only one person if it is more than 20 kg.
It occasionally causes the damage of the unit and health to be impaired.
Some units use PP bands for packing. Do not use any PP band for
delivery purpose. It may cause the injury.
Do not touch the heat exchanger fins with your bare hands.
Doing so may cut your hands.
Do not operate the air conditioner without the eliminator
set place.
Drain may drop into down flow supply duct.
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