Table Des Matières; Safety Precautions; Before Installation And Electric Work - Mitsubishi Electric CITY MULTI Série Manuel D'installation

Contents
1. Safety precautions ........................................................................................ 8
1.1. Before installation and electric work ........................................... 8
1.2. Before getting installed ............................................................... 9
1.3. Before getting installed (moved) - electrical work ........................ 9
1.4. Before starting the test run ......................................................... 9
2. Indoor unit accessories .............................................................................. 10
3. Selecting an installation site ....................................................................... 10
3.1. Install the indoor unit on a ceiling strong enough to sustain
its weight .........................................................................................10
3.2. Securing installation and service space .........................................10
3.3. Combining indoor units with outdoor units ................................ 10
4. Fixing hanging bolts ................................................................................... 11
4.1. Fixing hanging bolts .................................................................. 11
5. Installing the unit ........................................................................................ 11
5.1. Hanging the unit body ............................................................... 11
5.2. Confirming the unit's position and fixing hanging bolts ............. 11
6. Connecting drain pipe ................................................................................ 11
6.1. Drain pipe specifications ........................................................... 11
6.2. Drain pipe ................................................................................. 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.
• This appliance is not intended for use by persons (including children)
with reduced physical, sensory or mental capabilities, or lack of experi-
ence and knowledge, unless they have been given supervision or in-
struction concerning 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.
8
6.3. Drain piping work ...................................................................... 11
6.4. Confirming drain discharge ....................................................... 12
7. Connecting water pipes .............................................................................. 12
7.1. Important notes on water pipework installation ......................... 12
7.2. Water pipe insulation ................................................................ 12
7.3. Water treatment and quality control .......................................... 13
8. Duct work ................................................................................................... 13
9. Electrical wiring .......................................................................................... 14
9.1. Power supply wiring .................................................................. 14
9.2. Connecting remote controller, indoor and outdoor
transmission cables .................................................................. 15
9.3. Connecting electrical connections ............................................ 15
9.4. External I/O specifications ........................................................ 15
9.5. Selecting the external static pressure ....................................... 15
9.6. Setting addresses ..................................................................... 16
9.7. Sensing room temperature with the built-in sensor in
a remote controller .................................................................... 16
9.8. Changing the power voltage setting ......................................... 16
9.9. Electrical characteristics ........................................................... 16
• 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.
• 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.
• 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.
• Children should be supervised to ensure that they do not play with the
appliance.
• The installer and system specialist shall secure safety against leakage
according to local regulation or standards.
- Following standards may be applicable if local regulation are not available.
• Pay a special attention to the place, such as a basement, etc. where
refrigeration gas can stay, since refrigeration is heavier than the air.
• 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 per-
sons.