Electric Wiring - Toshiba MCY-MAP0401TP Series Installation Manual

2FAN_IM_DB04905901-00.book Page 16 Friday, October 24, 2014 3:19 PM
6

Electric Wiring

WARNING
The appliance shall be installed in accordance with national wiring regulations.
Capacity shortages of the power circuit or an incomplete installation may cause an electric shock or fire.
CAUTION
• Perform wiring of power supply complying with the rules and regulations of the local electric company.
• Do not connect 220 V power to the terminal blocks for control cables (U1, U2, U3, U4); otherwise, the unit may
break down.
• Be sure that electric wiring does not come into contact with high-temperature parts of piping; otherwise, the coating
of cables may melt and cause an accident.
• After connecting wires to the terminal block, take off the traps and fix the wires with cord clamps.
• Do not conduct power to indoor units until vacuuming of the refrigerant pipes has finished.
• For the wiring of power to indoor units and that between indoor and outdoor units, follow the instructions in the
installation manual of each indoor unit.
Power wiring selection
Standard model
Model
Nominal Voltage, Phase and frequency
MCY-MAP0401*
220–240 V ~ 50 Hz
MCY-MAP0501*
220–230 V ~ 60 Hz
MCY-MAP0601*
Circuit breaker
(Earth leakage breaker)
EN-31
MCA: Maximum Circuit Amps
MOCP: Maximum Overcurrent Protection (Amps)
Power Supply MCA
(A)
27.0
28.0
28.0
Main switch
(Fuse)
 Specifications for communication wiring
Design of communication wiring
Summary of communication wiring
Outdoor unit
U1 U2 U3 U4
Central controller
U1 U2
U3 U4
U1 U2 A B
MOCP
Indoor unit
(A)
32.0
32.0
A B
32.0
Remote controller
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)
– 16 –
Communication wiring between indoor and outdoor units
(Shield wire)
Communication wiring between indoor units (Shield wire)
U1 U2 A B U1 U 2 A B
Indoor unit Indoor unit
A B A B
Remote controller Remote controller
(Group control)
Installation Manual
U1 U 2 A B
Indoor unit
EN-32