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General safety precautions
Installer and user reference guide
12
RXYTQ
VRV IV+ heat pump for high ambient temperatures
4P561157-1B – 2021.11
WARNING
▪
ONLY use copper wires.
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Make sure the field wiring complies with the applicable legislation.
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All field wiring MUST be performed in accordance with the wiring diagram
supplied with the product.
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NEVER squeeze bundled cables and make sure they do NOT come in contact with
the piping and sharp edges. Make sure no external pressure is applied to the
terminal connections.
▪
Make sure to install earth wiring. Do NOT earth the unit to a utility pipe, surge
absorber, or telephone earth. Incomplete earth may cause electrical shock.
▪
Make sure to use a dedicated power circuit. NEVER use a power supply shared by
another appliance.
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Make sure to install the required fuses or circuit breakers.
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Make sure to install an earth leakage protector. Failure to do so may cause
electrical shock or fire.
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When installing the earth leakage protector, make sure it is compatible with the
inverter (resistant to high frequency electric noise) to avoid unnecessary opening
of the earth leakage protector.
CAUTION
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When connecting the power supply: connect the earth cable first, before making
the current-carrying connections.
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When disconnecting the power supply: disconnect the current-carrying cables
first, before separating the earth connection.
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The length of the conductors between the power supply stress relief and the
terminal block itself MUST be as such that the current-carrying wires are
tautened before the earth wire is in case the power supply is pulled loose from
the stress relief.
NOTICE
Precautions when laying power wiring:
▪
Do NOT connect wiring of different thicknesses to the power terminal block (slack
in the power wiring may cause abnormal heat).
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When connecting wiring which is the same thickness, do as shown in the figure
above.
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For wiring, use the designated power wire and connect firmly, then secure to
prevent outside pressure being exerted on the terminal board.
▪
Use an appropriate screwdriver for tightening the terminal screws. A screwdriver
with a small head will damage the head and make proper tightening impossible.
▪
Over-tightening the terminal screws may break them.
Install power cables at least 1 meter away from televisions or radios to prevent
interference. Depending on the radio waves, a distance of 1 meter may NOT be
sufficient.
