LG MULTI V ARNU363DDA4 Installation Manual page 46

ELECTRICAL
Recommended Electrical Entry Location
It is recommended by the manufacturer that electrical service be brought into the unit through the end wall, as shown below. There are three
penetrations into the cabinet that are required.
Figure 32: Electrical Entry in the Split Rooftop Units.
Control Box Wiring Connections
It is recommended by the Manufacturer that electrical service be brought into the unit through the end wall, as shown below. There are three
penetrations into the cabinet that are required. See Figure below.
Figure 33: Control box in the Split Rooftop Unit.
Main PCB
SUB PCB(HR UNIT)
SUB PCB(Main PCB)
Transformer
208-230V → 24V
T/B-Economizer
T/B-Motor
T/B-Communication/ Remote
T/B-Main Power
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HR UNIT PCB
Dry Contact
208-230V → 24V
Relay PCB
T/B-DO (Digital Output)
Economizer(Honey Well)