Control Box Components - LG MULTI V ARNU363DDA4 Installation Manual

PRODUCT OVERVIEW

Control Box Components

Figure 3: 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)