LG MULTI V ARNU073TUD4 Installation Manual page 72

System ID No.: _________________________________________________ Indoor Unit ID.: ____________________________________
Checked by: __________________________________ Date:__________________ Signature: ___________________________________
Power Wiring / Communications Cable
Description
Power provided is single phase, ±10% of indoor unit nameplate specifications.
Power wiring to each indoor unit was installed per all local, state, and NEC requirements. Indoor unit is properly grounded.
Power wiring / communication cables from the outdoor unit to the indoor unit(s) / heat recovery unit(s) (heat recovery systems
only) are connected to the proper terminals. See wiring diagrams for each indoor unit / heat recovery unit model.
Power wiring and communication cables were properly separated using at least the required minimum distances provided in the
product installation manual.
Cables are installed using at least the required minimum distances from high voltage and EMF generating equipment.
All terminal block screws are tight. Power wiring is not in contact with communication terminals. Power wiring / communication
cables have ring or fork terminals installed (use appropriate crimping tool to attach).
Power wiring and communication cables are properly secured to the control panel case to prevent wire tension at the terminal
block.
Power wiring and communication cables are protected from chaffing and sharp edges at control box case and conduit pipe
openings.
Communication cable between Master ODU to Slave ODU(s), and Master ODU to IDUs / HRUs to be 18 AWG, 2-conductor,
twisted, stranded, shielded. Ensure the communication cable shield is properly grounded to the Master ODU chassis only. Cable
segment shields are tied together.
Communications cable is plenum rated.
Ground wire was installed and properly terminated at the outdoor unit(s).
(Optional) Smoke detector is properly installed and wired. New batteries are installed (if applicable).
Wall Mounted Zone Controller Communications
Description
Communication cable from Indoor Unit to Remote Controller(s) is to be 22 AWG, 3-conductor, twisted, stranded, unshielded.
Wiring must comply with all applicable local and national codes.
Zone controller cable has not been cut, spliced, or extended with wire nuts.
Cable is securely plugged into the socket on the zone controller or the three screw terminals (controller model specific); Yellow
to "Y", Red to "R", and Black to "B".
Zone controller field settings have been adjusted for the application's space temperature sensing strategy.
Indoor Unit Control Panel
Description
Zone controller cable is securely connected to the indoor unit PCB.
If an optional remote temperature sensor was installed, the associated cable is plugged into the proper socket (the factory return
air thermistor has been unplugged).
Indoor unit DIP switches have been adjusted for application (group control-master / slave; continuous fan operation; dry con-
tact).
All plugs are properly seated in the sockets on the control board.
Power and communications cables are properly restrained and separated.
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