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Installation Manual
Power wiring selection
Standard model
MCA: Maximum Circuit Amps
MOCP: Maximum Overcurrent Protection (Amps)
Model
Power Supply
Nominal Voltage, Phase and frequency
MCA
(A)
MOCP
(A)
MCY-MHP0404*
380-415 V 3N~, 50 Hz
12.5
16.0
MCY-MHP0504*
12.5
16.0
MCY-MHP0604*
12.5
16.0
Circuit breaker
(Earth leakage breaker)
Main switch
(Fuse)
Specifications for communication wiring
Design of communication wiring
Summary of communication wiring
Communication wiring and central control wiring use 2-core non-polarity wires.
Use 2-core shield wires to prevent noise trouble.
In this case, for the system grounding, close (connect) the end of shield wires, and isolate the end of terminal.
Use 2-core non-polarity wire for remote controller. (A, B terminals)
Use 2-core non-polarity wire for wiring of group control. (A, B terminals)
U1 U2 U3 U4
U1 U2
U3 U4
U1 U2 A B
2
U
B
A
U1
U2
U1
A
2
U
B
U1
A B
B
A
B
A
B
A
Outdoor unit
Central controller
Communication wiring between indoor and outdoor units
(Shield wire)
Communication wiring between indoor units (Shield wire)
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Remote controller
Remote controller
Remote controller
(Group control)
EN-45
EN-46
