Inhaltsverzeichnis; Safety Precautions; Before Installation And Electric Work; Precautions For Devices That Use R410A Refrigerant - Mitsubishi Electric PFD-P250VM-E Installationshandbuch

Contents
1. Safety precautions ........................................................................................ 9
1.1. Before installation and electric work ............................................ 9
1.2. Precautions for devices that use R410A refrigerant .................... 9
1.3. Before getting installed .............................................................. 10
1.4. Before getting installed (moved) - electrical work ..................... 10
1.5. Before starting the test run ........................................................ 10
1.6. Before connecting to the outdoor unit ....................................... 10
2. Indoor unit accessories .............................................................................. 10
3. Selecting an installation site ....................................................................... 10
3.1. Securing installation and service space .................................... 11
4. Installing the unit ........................................................................................ 11
4.1. Hanging unit .............................................................................. 11
4.2. Fixing unit .................................................................................. 11
5. Refrigerant pipe and drain pipe specifications ........................................... 11
5.1. Refrigerant pipe and drain pipe specifications .......................... 11

1. Safety precautions

1.1. Before installation and electric work

u Before installing the unit, make sure you read all the "Safety
precautions".
u 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 air 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 an air cleaner, humidifier, electric heater, and other acces-
sories specified by Mitsubishi Electric.
- Ask an authorized technician to install the accessories. Improper installa-
tion 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.
All manuals and user guides at all-guides.com
6. Connecting refrigerant pipes and drain pipes............................................. 11
7. Electrical wiring .......................................................................................... 12
8. Remote Controller Operation Problems and Solutions .............................. 15
9. Test Operation (read OPERATION MANUAL as well) ................................ 15
10. Separating the top and bottom of the unit .................................................. 16
•
•
•
•
•
•
•
•
•
1.2. Precautions for devices that use
•
•
•
•
•
6.1. Refrigerant piping work ............................................................. 11
6.2. Drain piping work ...................................................................... 12
7.1. Power supply wiring .................................................................. 12
7.2. Connecting remote controller, indoor and outdoor transmission
cables ........................................................................................ 13
7.3. Connecting electrical connections ............................................. 13
7.4. Setting addresses ..................................................................... 13
7.5. External I/O Specifications ........................................................ 14
Have all electric work done by a licensed electrician according to "Elec-
tric Facility Engineering Standard" and wire regulation of the region
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 en-
ter 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 (R410A) speci-
fied on the unit.
- If a different refrigerant or air is mixed with the original refrigerant, the re-
frigerant cycle may malfunction and the unit may be damaged.
If the air conditioner is installed in a small room, measures must be tak-
en 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.
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.
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, ox-
ides, dust/dirt, shaving particles, oils, moisture, or any other contaminant.
- Contaminants on the inside of the refrigerant piping may cause the refrig-
erant 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 ester oil, ether oil or alkylbenzene (small amount) as the refrigera-
tor oil to coat flares and flange connections.
- The refrigerator oil will degrade if it is mixed with a large amount of mineral
oil.
Use liquid refrigerant to fill the system.
- If gas refrigerant is used to seal the system, the composition of the refrig-
erant in the cylinder will change and performance may drop.
9