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Contents
1. Safety precautions ...................................................................................... 6
1.1. Before installation and electric work .......................................... 6
1.2. Precautions for devices that use R407C refrigerant .................. 6
1.3. Before getting installed .............................................................. 7
1.4. Before getting installed (moved) - electrical work ...................... 7
1.5. Before starting the test run ........................................................ 7
2. Unit accessories ......................................................................................... 7
3. Selecting an installation site ....................................................................... 7
3.1. Space required around unit ....................................................... 7
4. Lifting method and weight of product .......................................................... 8
5. Installation of unit ........................................................................................ 8
5.1. Installation ................................................................................. 8
6. Drain piping work ........................................................................................ 8
7. Duct work .................................................................................................... 8
8. Remote controller ....................................................................................... 9
8.1. Installing procedures ................................................................. 9
8.2. Connecting procedures ............................................................. 9
1. Safety precautions
1.1. Before installation and electric work
s Before installing the unit, make sure you read all the "Safety
precautions".
s The "Safety precautions" provide very important points re-
garding 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 put on the unit
: 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 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 strong winds and earthquakes and install the unit at the speci-
fied place.
- Improper installation may cause the unit to topple and result in injury.
•
Always use other accessories specified by Mitsubishi Electric.
- 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 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.
•
Install the air conditioner according to this Installation Manual.
- If the unit is installed improperly, water leakage, electric shock, or fire may result.
6
8.3. Fitting the upper case ................................................................ 9
8.4. Function selection ................................................................... 10
9. Electrical wiring ........................................................................................... 13
9.1. Address settings ...................................................................... 14
9.2. Wiring connection .................................................................... 14
10. Specifications for installing the belt ........................................................... 14
11. Modification method of fan direction (From side flow to top flow) .............. 14
12. Test run ...................................................................................................... 15
12.1. Before test run ......................................................................... 15
12.2. Test run procedures ................................................................. 15
12.3. Self-check ................................................................................ 16
12.4. Remote controller check .......................................................... 17
13. Troubleshooting ......................................................................................... 17
13.1. How to handle problems with the test run ............................... 17
13.2. The following occurrences are not problems or errors ............ 18
14. System control .......................................................................................... 19
14.1. System settings ....................................................................... 19
14.2. Examples of refrigerant system address setting ..................... 19
•
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 im-
properly, electric shock and fire may result.
•
Securely install the unit terminal cover (panel).
- If the terminal cover (panel) is not installed properly, dust or water may enter
the unit and fire or electric shock may result.
•
When re-charging the refrigerant circuit after installation or relocation of
the unit, only use the specified refrigerant (R407).
- If a different refrigerant or air is mixed with the original refrigerant, the refrig-
erant cycle may malfunction and the unit may be damaged.
•
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 Elec-
tric 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 re-
frigeration gas can stay, since refrigeration is heavier than the air.
•
The appliance is not intended for use by young children or infirm per-
sons without supervision.
•
Young children should be supervised to ensure that they do not play
with the appliance.
1.2. Precautions for devices that use R407C
refrigerant
Caution:
•
Use liquid refrigerant to fill the system.
- If gas refrigerant is used to seal the system, the composition of the refriger-
ant in the cylinder will change and performance may drop.
•
Do not use a refrigerant other than R407C.
- If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may
cause the refrigerator oil to deteriorate.
•
Use a vacuum pump with a reverse flow check valve.
- The vacuum pump oil may flow back into the refrigerant cycle and cause the
refrigerator oil to deteriorate.
•
Do not use the following tools that are used with conventional refriger-
ants.
(Gauge manifold, charge hose, gas leak detector, reverse flow check valve,
refrigerant charge base, refrigerant recovery equipment)
- If the conventional refrigerant and refrigerator oil are mixed in the R407C,
the refrigerant may deteriorated.
- If water is mixed in the R407C, the refrigerator oil may deteriorate.
- Since R407C does not contain any chlorine, gas leak detectors for conven-
tional refrigerants will not react to it.
•
Do not use a charging cylinder.
- Using a charging cylinder may cause the refrigerant to deteriorate.
•
Be especially careful when managing the tools.
- If dust, dirt, or water gets in the refrigerant cycle, the refrigerant may deterio-
rate.
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