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1. Safety precautions ..................................................................... 21
1.1. Before installation and electric work ........................... 21
1.2. Before installation ....................................................... 21
1.3. Before installation (relocation) - electrical work .......... 22
1.4. Before starting the test run .......................................... 22
2. Spacing ...................................................................................... 23
3. Parts List .................................................................................... 25
4. Applicable models ..................................................................... 26
5. Preparation for installation ......................................................... 26
* For information not contained in this booklet, please refer to the Installation Manual of the outdoor unit.
• Use the supplied terminal block for the panel heater.
• Switch setting is required to use the panel heater.
• Using a snow hood is recommended.
• When the panel heater is installed in a place where winds blow directly to it, install a wind guard to obtain enough heating effect.
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.
: 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.
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
experience and knowledge, unless they have been given supervision or
instruction concerning 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.
•
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 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.
6. Installation Procedures ...............................................................27
7. Panel Heater Installation ............................................................27
8. Electrical Wiring ..........................................................................28
9. Electrical wiring diagram and Dipswitch settings ........................30
10. Reassembly ................................................................................30
11. Confirmation of proper operation ................................................30
12. The following symptoms do not indicate malfunctions. ..............31
13. Failure judgement .......................................................................32
•
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.
•
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
qualified 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
dedicated 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
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.
•
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
equipment, or radio communication equipment may cause the air
conditioner to operate erroneously, or fail to operate. On the other hand, the
air conditioner 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.
21
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