SMMS High-Wall Type
Installation Manual
– 7 –
Electrical wiring
• Only a qualified installer(*1) or qualified service person(*1) is allowed to carry out the electrical work of
the air conditioner. Under no circumstances must this work be done by an unqualified individual since
failure to carry out the work properly may result in electric shocks and / or electrical leaks.
• To connect the electrical wires, repair the electrical parts or undertake other electrical jobs, wear gloves
to provide protection for electricians and from heat, insulating shoes and clothing to provide protection
from electric shocks. Failure to wear this protective gear may result in electric shocks.
• Use wiring that meets the specifications in the Installation Manual and the stipulations in the local
regulations and laws. Use of wiring which does not meet the specifications may give rise to electric
shocks, electrical leakage, smoking and / or a fire.
• Connect earth wire. (Grounding work)
Incomplete grounding causes an electric shock.
• Do not connect earth wires to gas pipes, water pipes, and lightning conductor or telephone earth wires.
• After completing the repair or relocation work, check that the earth wires are connected properly.
• Install a circuit breaker that meets the specifications in the installation manual and the stipulations in
the local regulations and laws.
• Install the circuit breaker where it can be easily accessed by the agent.
• When installing the circuit breaker outdoors, install one which is designed to be used outdoors.
• Under no circumstances the power wire must not be extended. Connection trouble in the places where
the wire is extended may give rise to smoking and / or a fire.
• Electrical wiring work shall be conducted according to law and regulation in the community and
installation manual.
Failure to do so may result in electrocution or short circuit.
Test run
• Before operating the air conditioner after having completed the work, check that the electrical parts box
cover of the indoor unit and service panel of the outdoor unit are closed, and set the circuit breaker to
the ON position. You may receive an electric shock if the power is turned on without first conducting
these checks.
• If there is any kind of trouble (such as an error display has appeared, smell of burning, abnormal
sounds, the air conditioner fails to cool or heat or water is leaking) has occurred in the air conditioner,
do not touch the air conditioner yourself but set the circuit breaker to the OFF position, and contact a
qualified service person. Take steps to ensure that the power will not be turned on (by marking “out of
service” near the circuit breaker, for instance) until qualified service person arrives. Continuing to use
the air conditioner in the trouble status may cause mechanical problems to escalate or result in electric
shocks or other trouble.
• After the work has finished, use an insulation tester set (500 V Megger) to check the resistance is 1 M
Ω
or more between the charge section and the non-charge metal section (Earth section). If the resistance
value is low, a disaster such as a leak or electric shock is caused at user’s side.
• Upon completion of the installation work, check for refrigerant leaks and check the insulation resistance
and water drainage. Then conduct a test run to check that the air conditioner is operating properly.
Explanations given to user
• Upon completion of the installation work, tell the user where the circuit breaker is located. If the user
does not know where the circuit breaker is, he or she will not be able to turn it off in the event that trouble
has occurred in the air conditioner.
• If the fan grille is damaged, do not approach the outdoor unit but set the circuit breaker to the OFF
position, and contact a qualified service person(*1) to have the repairs done. Do not set the circuit
breaker to the ON position until the repairs are completed.
• After the installation work, follow the Owner’s Manual to explain to the customer how to use and
maintain the unit.
7-EN
High-Wall Type
