Inhaltsverzeichnis; Safety Precautions; Before Installation And Electric Work; Before Getting Installed - Mitsubishi Electric City Multi PFFY-WP20-VLRMM-E Installationshandbuch

Contents
1. Safety precautions ........................................................................................ 5
1.1. Before installation and electric work ........................................... 5
1.2. Before getting installed ............................................................... 5
1.3. Before getting installed (moved) - electrical work ....................... 5
1.4. Before starting the test run ......................................................... 6
2. Indoor unit accessories ................................................................................ 6
3. Selecting an installation site ......................................................................... 6
3.1. Securing installation and service space ...................................... 6
3.2. Combining indoor units with outdoor units .................................. 6
4. Installing the unit .......................................................................................... 6
4.1. Assembling the unit ..................................................................... 6
4.2. Center of gravity and product weight .......................................... 7
5. Connecting drain pipe .................................................................................. 7
5.1. Drain pipe .................................................................................... 7
5.2. Drain piping work ........................................................................ 7

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 la-
bel.) <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.
• 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 con-
cerning use of the appliance by a person responsible for their safety.
• 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 typhoons and other strong winds and earthquakes and in-
stall 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.
• 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.
• Do not touch the heat exchanger fins.
- Improper handling may result in injury.
6. Connecting water pipes ................................................................................ 7
6.1. Important notes on water pipework installation ........................... 7
6.2. Water pipe insulation .................................................................. 7
6.3. Water treatment and quality control ............................................ 8
7. Electrical wiring ............................................................................................ 9
7.1. Power supply wiring .................................................................... 9
7.2. Connecting remote controller, indoor and outdoor transmission
cables ........................................................................................ 10
7.3. Connecting electrical wires ....................................................... 10
7.4. Selecting the external static pressure ....................................... 10
7.5. Setting addresses ..................................................................... 11
7.6. Sensing room temperature with the built-in sensor in a remote
controller ................................................................................... 11
7.7. Electrical characteristics ........................................................... 11
• 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.
• Install the air conditioner according to this Installation Manual.
- 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 "Elec-
tric Facility Engineering Standard" and "Interior Wire Regulations" and
the 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.
• Keep the electric parts away from water (washing water etc.).
- It might result in electric shock, catching fire or smoke.
• 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 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.
• 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.

1.2. Before getting installed

Caution:
• Do not use the air conditioner where food, pets, plants, precision instru-
ments, 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 noise.
- The inverter equipment, private power generator, high-frequency medical
equipment, or radio communication equipment may cause the air con-
ditioner to operate erroneously, or fail to operate. On the other hand, the
air conditioner may affect such equipment by creating 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.
1.3. Before getting installed (moved) - elec-
trical work
Caution:
• Ground the unit.
- Do not connect the ground wire to 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 an leak circuit breaker, as required.
- If an leak circuit breaker is not installed, electric shock may result.
5