7
GB
Contents
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.
:
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: Beware of hot surface.
Warning:
Carefully read the labels af
¿
xed to the main unit.
Warning:
If the supply cord is damaged, it must be replaced by the manufacturer,
its service agent or similarly
T
uali
¿
ed persons in order to avoid a ha
]
ard.
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
cocerning 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 pro-
vided with the unit and on the nameplate.
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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
malfunctions 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 authori
]
ed technician to install the air conditioner.
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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 speci
¿
ed cables for wiring. Make the connections securely so
that the outside force of the cable is not applied to the terminals.
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Prepare for rain and other moisture and earth
T
uakes and install the
unit at the speci
¿
ed place.
- Improper installation may cause the unit to topple and result in injury.
Always use an strainer and other accessories speci
¿
ed by Mitsubishi
Electric.
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-
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Never repair the unit. If the air conditioner must be repaired, consult
the dealer.
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result.
Do not touch the refrigerant pipes and Water pipes.
- Improper handling may result in injury.
When handling this product, always wear protective e
T
uipment.
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.
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be released.
Install the unit according to this Installation Manual.
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result.
+
ave 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.
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.
eep the electric parts away from water (washing water etc.).
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Securely install the heat source unit terminal cover (panel).
- If the terminal cover (panel) is not installed properly, dust or water may en-
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When installing and moving the air conditioner to another site, do not
charge it with a refrigerant different from the refrigerant (R410A) speci-
¿
ed 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
taken to prevent the refrigerant concentration from exceeding the safe-
ty limit even if the refrigerant should leak.
- Consult the dealer regarding the appropriate measures to prevent the
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could result.
When moving and reinstalling the air conditioner, consult the dealer or
an authori
]
ed technician.
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After completing installation work, make sure that refrigerant gas is not
leaking.
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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
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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
refrigeration gas can stay, since refrigeration is heavier than the air.
Children should be supervised to ensure that they do not play with the
appliance.
1. Safety
precautions
........................................................................................ 7
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........................................... 7
1.2.
Precautions for devices that use R410A refrigerant ......................8
1.3. Before getting installed ............................................................... 8
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....................... 8
1.5. Before starting the test run ......................................................... 8
2. About the product ......................................................................................... 9
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............................................................................................... 9
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..................................................................... 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 .................................................................................. 9
7.1. Precautions during installation .................................................. 10
7.2.
Insulation
installation
................................................................ 10
7.3. Water processing and water quality control .............................. 10
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.......................................................................... 11
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........................................... 11
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............................... 12
9. Connecting refrigerant pipes and drain pipes............................................. 12
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............................................................. 12
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...................................................................... 12
9.3. Connecting electrical connections ............................................ 12
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
..................................................................... 14
11. Information on rating plate .......................................................................... 14
