7
GB
Contents
1.
Safety precautions .............................................................................................7
1.1.
Before installation and electric work .................................................7
1.2.
Precautions for devices that use R410A refrigerant .........................8
1.3.
Before getting installed.....................................................................8
1.4.
Before getting installed (moved) - electrical work.............................8
1.5.
Before starting the test run ...............................................................8
2.
About the product...............................................................................................9
3.
Specifications.....................................................................................................9
4.
Confirmation of parts attached...........................................................................9
5.
Lifting method ....................................................................................................9
6.
Installation of unit and service space .................................................................9
6.1.
Installation ........................................................................................9
6.2.
Service space ...................................................................................9
7.
Water pipe installation......................................................................................10
7.1.
Precautions during installation .......................................................10
7.2.
Insulation installation ......................................................................10
7.3.
Water processing and water quality control ...................................11
7.4.
Pump interlock................................................................................11
8.
Refrigerant pipe and drain pipe specifications .................................................12
8.1.
Refrigerant pipe, drain pipe and filling port.....................................12
9.
Connecting refrigerant pipes and drain pipes ..................................................12
9.1.
Refrigerant piping work ..................................................................12
9.2.
Drain piping work............................................................................12
9.3.
Connecting electrical connections..................................................13
10. Electrical wiring ................................................................................................13
10.1. Power supply wiring .......................................................................13
10.2. Connecting remote controller, indoor and outdoor transmission
cables .............................................................................................14
10.3. External input/output function.........................................................14
10.4. Setting addresses...........................................................................15
11. Information on rating plate ...............................................................................15
1. Safety precautions
1.1. Before installation and electric work
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
Warning:
• 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.
• 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.
• 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.
• Do not use refrigerant other than the type indicated in the manuals provided
with the unit and on the nameplate.
- Doing so may cause the unit or pipes to burst, or result in explosion or fire during
use, during repair, or at the time of disposal of the unit.
- It may also be in violation of applicable laws.
- MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for mal-
functions or accidents resulting from the use of the wrong type of refrigerant.
• Do not use steel pipes as water pipes.
- Copper pipes are recommended.
• The water circuit should be a closed circuit.
• 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 in a place that can withstand its weight.
- Inadequate strength may cause the unit to fall down, resulting in injuries.
• Do not touch the unit. The unit surface can be hot.
• Do not install the unit where corrosive gas is generated.
• 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 rain and other moisture 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 strainer and other accessories specified by Mitsubishi Elec-
tric.
- 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 refrigerant pipes and Water pipes.
- 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 unit 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 “Electric
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 improp-
erly, 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 heat source unit terminal cover (panel).
- If the terminal cover (panel) is not installed properly, dust or water may enter the
heat source 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) 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.
• To dispose of this product, consult your dealer.
• 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 refrig-
eration gas can stay, since refrigeration is heavier than the air.
• Children should be supervised to ensure that they do not play with the
appliance.
Before installing the unit, make sure you read all the “Safety pre-
cautions”.
The “Safety precautions” provide very important points regard-
ing safety. Make sure you follow them.
: 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.)
<Color: yellow>
: Beware of hot surface.
Warning:
Carefully read the labels affixed to the main unit.
WT07507X01.book 7 ページ ２０１４年１２月１７日 水曜日 午前９時３６分
