Wiring Design; General; Outdoor Unit Power Supply - Toshiba MCY-MAP 7HS-UL Series Engineering Data Book

4
Data book

Wiring design

4-1.General

• All field wiring insulation rating must comply with NEC and local codes.
• Do not connect 208/230 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.
• Prepare an exclusive power supply for the air conditioner.

4-2.Outdoor unit power supply

Circuit breaker
Outdoor unit data
Model name Capacity
MCY- type
MAP0367HS-UL 36
MAP0487HS-UL 48
MAP0607HS-UL 60
Disconnect per NEC
and local codes.
Power supply Voltage Range
Phase and Nominal Min.
frequency Voltage (V)
1Ph 60 Hz 208/230 V 187
1Ph 60 Hz 208/230 V 187
1Ph 60 Hz 208/230 V 187
Compressor Fan Motor
Max.
(kW) (kW)
(V)
253 3.75 0.10 x 2
253 3.75 0.10 x 2
253 3.75 0.10 x 2
22
MCA MOCP Recommended
(A) (A) breaker size
36.3 60 40
36.3 60 40
36.3 60 40