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Multi V Ducted Indoor Units
Due to our policy of continuous product innovation, some specifications may change without notification.
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POWER AND CONTROL WIRING
Overview
DANGER
High voltage electricity is required to operate this system. Adhere to the National Electrical Codes and these
instructions when wiring.
Improper connections and inadequate grounding can cause accidental injury or death.
Always ground the unit following local, state, and National Electrical Codes.
Improper connections and inadequate grounding can cause accidental injury or death.
Properly size all circuit breakers or fuses.
There is risk of fire, electric shock, explosion, physical injury or death.
WARNING
The information contained in this manual is intended for use by a trained electrician familiar with applicable
local codes and the U.S. National Electric Code (NEC), and who is equipped with the proper tools and test
instruments.
Failure to carefully read and follow all instructions in this manual can result in personal injury or death.
Connect the indoor unit input power cable but do not apply power to the indoor unit until authorized to do so
by the system commissioning agent.
Inappropriate power connection can result in personal injury or death.
Ensure the unit is connected to a dedicated power source that provides adequate power.
If the power source capacity is inadequate or the electric work is not performed properly, it may result in fire, electric shock, physical
injury or death.
Refer to local, state, and federal codes, and use power wires of sufficient current capacity and rating.
Wires that are too small may generate heat and cause a fire, resulting in physical injury or death.
Secure all field wiring connections with appropriate wire strain relief.
Improperly securing wires will create undue stress on equipment power lugs. Inadequate connections may generate heat, cause
a fire and physical injury or death.
Properly tighten all power connections.
Loose wiring may overheat at connection points, causing a fire, physical injury or death.
Note:
Connect the indoor unit input power cable but do not apply power to the indoor unit until authorized to do so
by the system commissioning agent.
Inappropriate power connection can result in equipment damage and will void the LG limited liability warranty.
Do not cut, lengthen or shorten the communications and power cable between a zone controller or dry contact
unit and its connected indoor unit. Do not install the zone controller or dry contact unit in a location where the
communications and power cable cannot be safely and easily connected between the two units. Do not allow
strain on this cable.
Poor cable connections can cause equipment malfunction.
The information contained in this manual is intended for use by an industry-qualified, experienced, trained
electrician familiar with applicable local codes and the U.S. National Electric Code (NEC), and who is
equipped with the proper tools and test instruments.
Failure to carefully read and follow all instructions in this manual can result in equipment malfunction or property damage and will
void the LG limited liability warranty.
Connecting Power and Control Wiring
Indoor unit installation best practices are to connect control wiring (low voltage) and then connect power wiring (high voltage).
Do not apply power to the indoor unit or any Multi V system component until authorized to do so by the system commissioning
agent.
