Table Des Matières; Safety Precautions; Before Installation And Electric Work; Symbols Used In The Illustrations - Mitsubishi Electric PFAV-P250VM-E Manuel D'installation

The original language of this instruction book is English. The rest of the languages are the translation from the original version of English.
Contents
Contents............................................................................................................11
1. Safety precautions ......................................................................................11
1.1. Before installation and electric work ..........................................11
1.2. Precautions for devices that use R410A refrigerant ..................11
1.3. Before getting installed ..............................................................12
1.4. Before getting installed (moved) - electrical work ......................12
1.5. Before starting the test run ........................................................12
2. Indoor unit accessories ...............................................................................12
3. Selecting an installation site........................................................................13
3.1. Securing installation and service space ....................................13
4. Installing the unit .........................................................................................13
4.1. Fixing unit ..................................................................................13
4.2. Requests regarding pulleys and belts .......................................13
5. Refrigerant pipe and drain pipe specifications ............................................15
5.1. Refrigerant pipe and drain pipe specifications...........................15
6. Connecting refrigerant pipes and drain pipes .............................................15

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.
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.
: Indicates that caution should be taken with rotating parts. (This symbol is
displayed on the main unit label.) <Color: yellow>
: Beware of electric shock (This symbol is displayed on the main unit label.)
<Color: yellow>
Warning:
Carefully read the labels affixed to the main unit.
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.
- Inadequate strength may cause the unit to fall down, resulting in injuries.
• Use the specified cables for wiring. Make the connections securely so
that the outside force of the cable is not applied to the terminals.
- Inadequate connection and fastening may generate heat and cause a fire.
• Prepare for other strong winds and earthquakes and install the unit at
the specified place.
- Improper installation may cause the unit to topple and result in injury.
• Always use the accessories specified by Mitsubishi Electric.
- 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. 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.
• When handling this product, always wear protective equipment.
EG: Gloves, full arm protection namely boiler suit, and safety glasses.
- Improper handling may result in injury.
• If refrigerant gas leaks during installation work, ventilate the room.
- If the refrigerant gas comes into contact with a flame, poisonous gases will
be released.
• Install the air conditioner according to this Installation Manual.
- If the unit is installed improperly, water leakage, electric shock, or fire may
result.
6.1. Refrigerant piping work..............................................................15
6.2. Drain piping work .......................................................................16
7. Electrical wiring ...........................................................................................17
7.1. Power supply wiring...................................................................18
7.2. Connecting remote controller, indoor and outdoor transmission
cables ........................................................................................18
7.3. Connecting electrical connections .............................................18
7.4. Setting addresses ......................................................................19
7.5. When using other than the internal sensor of the unit to detect
the room temperature ................................................................19
7.6. About fan control .......................................................................20
7.7. System connection example......................................................20
8. Test operation (read OPERATION MANUAL as well) ................................21
8.1. Test operation............................................................................21
8.2. Test run troubleshooting ............................................................22
• Have all electric work done by an authorized electrician according to the
local regulations and instructions given in this manual and always use a
special circuit.
- 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 the it with a refrigerant different from the refrigerant (R410A)
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 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.
• 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.
• When installing the Fresh Air Intake type units, take it into consideration
that the outside air may be delivered directly into the room upon
Thermo-OFF.
- Direct exposure to outdoor air may have an adverse effect on health or
cause food spoilage.
• Do not stand on the unit.
• 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.
• 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.
1.2. Precautions for devices that use
R410A 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 phosphorus deoxidized 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.
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