Installation Manual

En-16
6. ELECTRICAL WIRING
6.1. Safety precautions for electrical wiring
Power
WARNING
The rated voltage of this product is 208/230 V A.C. 60 Hz.
Before turning on verify that the voltage is within the 187V to 264V range.
Use a dedicated power circuit and breaker matched to the capacity of the total of Branch boxes and Indoor units ratings.
(Install in accordance with standard.)
Perform wiring work in accordance with standards so that the air conditioner can be operated safely and correctly.
When installing this system in high humidity locations, install using Ground fault equipment breakers (often referred to in
other countries as an ELCB earth leakage current breaker) to reduce the risk of leaking current which may result in electric
shock or potential fi re.
CAUTION
We suggest installing GFEB breakers (30 mA or greater) or follow local electrical code.
The power source capacity must be the sum of the air conditioner current and the current of other electrical appliances.
When the current contracted capacity is insuffi cient, change the contracted capacity.
Electrical wiring
WARNING
Before starting work, check that power is not being supplied to all units.
Match the terminal board numbers and connection cable colors with those of the outdoor unit and indoor unit.
Erroneous wiring may cause burning of electric parts.
Connect the connection cables fi rmly to the terminal board. Imperfect installation may cause a fi re.
Always fasten the outside covering of the connection cable with the cable clamp. (If the insulator is chafed, electric leakage
may occur.)
Always connect the ground wire.
Install the remote controller cables so that a hand cannot touch it directly.
Be sure to always turn the power off fi rst before performing the installation.
Otherwise, handling electrical parts without turning off the power fi rst may cause electric shock.
Be sure to set up an earth (ground) during installation. An earth (ground) wire should not be connected to the gas pipe,
water pipe, lightning rod, or telephone earth wiring (ground).
A faulty earth can cause electric shock or fi re.
Make sure all wiring connections are secure, do not bundle power cables together, and do not use extension cables or
circular power strips.
Otherwise, a faulty installation may cause excessive heat and electric shock or fi re.
Use the specifi ed electrical wires for the wiring between the indoor unit and the branch box and for the power supply. Ensure
proper connection of these wires and be sure to secure them in such manner that no external force of the electrical wires is
applied to the terminals.
Arrange the electrical wires between the indoor unit and the branch box and for the power supply in such manner that the
structures such as the service cover do not rise, and then install the cover securely.
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