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Table Of Contents; Safety Precautions; Before Installation And Electric Work - Mitsubishi Electric City Multi PUMY-P200YKM2 Installation Manual

Air-conditioners for building application
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  • ENGLISH, page 3
Caution
Please be sure to read this installation manual and the files on the website before proceeding with the
installation. Failure to follow the instructions may result in equipment damage.
If the files are not readable, please contact your dealer.
Listed below are the contents of this booklet.
For information not contained in this booklet, please refer to the manuals that can be downloaded from the
website.
Contents
1. Safety precautions

1.1. Before installation and electric work

► Before installing the unit, make sure you read all the "Safety
precautions".
► The "Safety precautions" provide very important points regarding
safety. Make sure you follow them.
► Please report to or take consent by the supply authority before
connection to the system.
"This equipment complies with IEC 61000-3-12 provided that the
short-circuit power S
is greater than or equal to S
sc
interface point between the user's supply and the public system.
It is the responsibility of the installer or user of the equipment to
ensure, by consulation with the distribution network operator if
necessary, that the equipment is connected only to a supply with a
short-circuit power S
greater than or equal to S
sc
S
(*1)
sc
Model
PUMY-P200YKM2
► It is designed for use in the residential, commercial and light-
industrial environment.
Symbols used in the text
Warning:
Describes precautions that should be observed to prevent danger of injury
or death to the user.
Caution:
Describes precautions that should be observed to prevent damage to the unit.
Symbols used in the illustrations
: Indicates an action that must be avoided.
: Indicates that important instructions must be followed.
: Indicates a part which must be grounded.
: Beware of electric shock. (This symbol is displayed on the main unit
label.) <Colour: yellow>
Warning:
Carefully read the labels affixed to the main unit.
HIGH VOLTAGE WARNING:
Control box houses high-voltage parts.
When opening or closing the front panel of the control box, do not let it
come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep
the unit off until the main DC bus voltage on outdoor power circuit
board has dropped to DC20V or less.
(For the amount of time required for the voltage to drop to DC20V or
below, refer to the wiring diagram of the target model)
Warning:
Ask the dealer or an authorized technician to install the air conditioner.
- Improper installation by the user may result in water leakage, electric
shock, or fire.
Install the unit at a place that can withstand its weight.
- Failure to do so may cause the unit to fall down, resulting in injuries and
damage to the unit.
When installing the unit, use appropriate protective equipment and
tools for safety. Failure to do so could cause injuries.
2. About the product
3. Additional refrigerant charge
4. Refrigerant collecting (Pump down)
(*1) at the
sc
(*1)"
sc
S
(MVA)
sc
1.56
3.1. Calculation of additional refrigerant charge
Use only specified cables for wiring. The wiring connections must be made
securely with no tension applied on the terminal connections. Also, never
splice the power cable or the indoor - outdoor unit connection cables for
wiring (unless otherwise indicated in this document).
Failure to observe these instructions may result in overheating, a fire
or communication failure.
Prepare for strong winds and earthquakes and install the unit at the
specified place.
- Improper installation may cause the unit to topple and result in injury and
damage to the unit.
Always use filters and other authorized accessories.
- Ask an authorized technician to install the accessories. Improper
installation by the user may result in water leakage, electric shock, or fire.
Never repair the unit by yourself. If the air conditioner must be
repaired, consult the dealer.
- If the unit is repaired improperly, water leakage, electric shock, or fire may
result.
Do not touch the heat exchanger fins.
- Improper handling may result in injury.
If refrigerant gas leaks during installation work, ventilate the room
immediately.
- If the refrigerant gas comes into contact with a flame, poisonous gases will
be released.
Install the air conditioner according to this Installation Manual &
website.
- If the unit is installed improperly, water leakage, electric shock, or fire may
result.
Have all electric work done by a licensed electrician according
to "Electric Facility Engineering Standard" and "Interior Wire
Regulations" and the instructions given in this manual and always use
a dedicated power supply.
- If the power source capacity is inadequate or electric work is performed
improperly, electric shock and fire may result.
Securely install the outdoor unit terminal cover (panel).
- If the terminal cover (panel) is not installed properly, dust or water may
enter the outdoor unit and fire or electric shock may result.
When installing and moving the air conditioner to another site, do not
charge it with a refrigerant different from the refrigerant specified on
the unit.
- If a different refrigerant or air is mixed with the original refrigerant, the
refrigerant cycle may malfunction and the unit may be damaged.
If the air conditioner is installed in a small room, measures must be
taken to prevent the refrigerant concentration from exceeding the
safety limit 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.
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
or operated forcibly, or parts other than those specified by Mitsubishi
Electric are used, fire or explosion may result.
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