Samsung MCU Series - Wiring Works; Circuit Breaker and Wire Installation; Wiring Diagrams and Connections

16
Installing the circuit breaker and wires
Power supply MCCB ELB Power cable Earth cable Communication cable
Max : 242V
Min : 198V
X A
XA, 30mmA
0.1 sec
0.0039inch
2
(2.5mm
2
)
0.0039inch
2
(2.5mm
2
)
0.0012~0.0023inch
2
(0.75~1.5mm
2
)
Installing the wire
X
Supply the 220-240V/208-230V power to L1, L2 (L, N) of MCU separately
X
Connect the communication cable from the outdoor unit to F1, F2 of MCU.
X
Power Line and communication line must be connected as shown in drawing.
Case 1 Case 2
220-240V/208-230V / Single Phase
(Supply separately)
ELB
MCCB
Outdoor
Unit
Indoor
Unit
Indoor
Unit
ELB
MCCB
Outdoor
Unit
Indoor
Unit
Indoor
Unit
MCU
Indoor
Unit
220-240V/208-230V / Single Phase
(Supply separately)
Case 3
ELB
MCCB
Outdoor
Unit
Indoor
Unit
MCU
Indoor
Unit
Indoor
Unit
220-240V/208-230V / Single Phase
(Supply separately)
X
Power Line and communication line must be installed as shown in drawing
❈
Hole size is Φ 43.7 mm
MCU MCU
Indoor Unit
Hole for MCU main power supply
Hole for communication
Refrigerant piping works