Samsung AM CNB C AA Series Technical Data Book page 56

13. Installation
Overall system configuration
DVM Hydro unit / Hydro unit HT use 208~230 V
DVM Hydro unit
Distribution board Outdoor unit
ELCB
or
MCCB
+ ELB
Earth
1 Phase
ELCB
or
MCCB
+ ELB
DVM
Hydro
unit
Exclusive
Wired remote
wired remote
controller
controller
Indoor unit
Communication cable
Wired remote
controller
Earth
Wired remote
controller