Electrical System Installation - LG LA090HYV3 Installation Manual

Single zone art cool premier wall mounted

Table of Contents

• All power wiring and communication cable installation must be performed by trained service providers working in accordance with local, state,

and National Electrical Code (NEC) / UL / CSA federal regulations related to electrical equipment and wiring, and following the manufacturer

product diagrams, requirements, and instructions in this manual. Failure to do so will lead to electric shock which can cause physical injury

or death.

• Verify that main power to the unit is completely off before proceeding. Follow all safety and warning information outlined at the beginning of

this manual. Failure to do so will cause electric shock and bodily injury or death.

• Familiarize yourself with the location of the circuit breaker. Be sure that a circuit breaker or some other emergency power cutoff device is in

place before any power wiring is done to the system. Failure to do so will cause bodily injury or death.

•

Never touch any power lines or live cables before all power is cutoff to the system. To do so will cause bodily injury or death.

• Undersized wiring will lead to unacceptable voltage at the unit and will cause a fire, which will cause bodily injury or death.

• Properly ground the Single Zone outdoor and indoor units. Ground wiring is required to prevent accidental electrical shock, bodily injury, and

death during current leakage.

• Ground wiring must always be installed by a trained technician.

• Install appropriately sized breakers / fuses / overcurrent protection switches and wiring in accordance with local, state, and NEC regulations

related to electrical equipment and wiring, and following the instructions in this manual. Using an oversized breaker or fuse will result in

electric shock, physical injury or death.

•

Do not connect ground wire to refrigerant, gas, or water piping; to lightning rods; to telephone ground wiring; or to the building plumbing

system. Failure to properly provide a NEC-approved earth ground can result in electric shock, fire, physical injury or death.

• Consider ambient conditions (temperature, direct sunlight, inclement weather, etc.) when selecting, installing, and connecting the power wir-

ing.

• Properly ground the Single Zone outdoor and indoor unit. Improperly connected ground wire can cause communication problems from electri-

cal noise, and motor current leakage. Ground wiring must always be installed by a trained technician.

• Install appropriately sized breakers / fuses / overcurrent protection switches and wiring in accordance with local, state, and NEC regulations

related to electrical equipment and wiring, and following the instructions in this manual. Using an oversized breaker or fuse will result in equip-

ment malfunction and property damage.

•

Do not connect ground wire to refrigerant, gas, or water piping; to lightning rods; to telephone ground wiring; or to the building plumbing

system. Failure to properly provide a NEC-approved earth ground can result in property damage and equipment malfunction.

•

Do not operate the air conditioning system until the refrigerant piping installation is complete. Operating the system before refrigerant

piping is finalized will damage the compressor.

Power Wiring / Communication Cable Connections

Best practice dictates using solderless ring or fork terminals at all power wiring and com-

munication cable terminations. Use copper bearing ring or fork terminals;

galvanized or nickel plate over steel. Use appropriate crimping tool to attach the ring or fork

terminals at all power wiring and control cable terminations.

To Install a Ring or Fork Terminal:

1. Trim the wiring with wire cutters or pliers, then strip the insulation to expose the strand

wiring to about 3/8 inches.

2. Using a ring terminal fastener or pliers, securely clamp a ring terminal to each stripped

wire end.