2
GB
Contents
1. Safety precautions ........................................................................ 2
1.1. Before installation and electric work .............................. 2
1.2. Before installation .......................................................... 2
1.3. Before installation (relocation) - electrical work ............. 2
1.4. Before starting the test run............................................. 3
2. Parts List ....................................................................................... 4
3. Applicable models ......................................................................... 6
4. Preparation for installation .............................................................7
5. Installation Procedures ..................................................................9
6. Heater Installation ........................................................................10
7. Electrical Wiring ...........................................................................33
8. Relay Box Installation ..................................................................37
9. Reassembly .................................................................................41
10.Confirmation of proper operation .................................................41
* For information not contained in this booklet, please refer to the Installation Manual of the outdoor unit.
• Consult your dealer for purchasing the Relay Box.
• The base heater is packaged separately from this product.
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
: 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>
HIGH VOLTAGE WARNING:
•
Control box houses high-voltage parts.
•
When opening or closing the front panel of the control box, do not let it
come into contact with any of the internal components.
•
Before inspecting the inside of the control box, turn off the power, keep
the unit off for at least 10 minutes, and confirm that the voltage between
FT-P and FT-N on INV Board has dropped to DC20V or less.
(It takes about 10 minutes to discharge electricity after the power supply
is turned off.)
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
instruction concerning use of the appliance by a person responsible for
their safety.
•
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.
•
Always use Relay Box and 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.
•
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 haz-
ard.
•
To reduce the risk of electric shock, do not install the unit when it is
raining.
•
Never attempt to repair the unit without the proper qualifications. If the
air conditioner must be repaired consult the dealer, contractor or quali-
fied Refrigeration Engineer.
- If the unit is repaired improperly, water leakage, electric shock, or fire may
result.
•
Have all electric work done by a licensed electrician according to the
“Electric Facility Engineering Standard”, the “Wire Regulations in each
area” and the instructions given in this manual and always use a dedi-
cated power supply.
- If the power source capacity is inadequate or electric work is performed
improperly, electric shock and fire may result.
•
Securely install the outdoor unit terminal cover (panel).
- If the terminal cover (panel) is not installed properly, dust or water may
enter 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, fuse, or other protection device is
shorted or operated forcibly, or parts other than those specified by Mitsubi-
shi 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.
- Choose the appropriate wire size and the switch capacities for the main
power supply described in this manual if local regulations are not available.
•
Children should be supervised to ensure that they do not play with the
appliance.
1.2. Before installation
Caution:
•
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.
- Inverter equipment, private power generator, high-frequency medical equip-
ment, or radio communication equipment may cause the air conditioner to
operate erroneously, or fail to operate. On the other hand, the air condi-
tioner may affect such equipment by creating noise that disturbs medical
treatment or image broadcasting.
•
To reduce the risk of injury, wear protective gear when working on the
controller.
1.3. Before installation (relocation) -
electrical work
Caution:
•
Ground the unit.
- Do not connect the ground wire to gas or water pipes, lightning rods, or tel-
ephone 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 a leak circuit breaker, as required.
- If a leak circuit breaker is not installed, electric shock may result.
•
Use power line cables of sufficient current carrying capacity and rating.
- Cables that are too small may leak, generate heat, and cause a fire.
•
Use only a circuit breaker and fuse of the specified capacity.
- A fuse or circuit breaker of a larger capacity, or the use of a substitute
simple steel or copper wire may result in a general unit failure or fire.
•
Stop the operation and turn off the power before cleaning.
•
Do not wash the air conditioner units.
- Washing them may cause an electric shock.
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.
Warning:
Carefully read the labels affixed to the main unit.
WT06456X01.book Page 2 Friday, January 20, 2012 3:39 PM
