22
Side blow VRF Data book
4
Wiring design
4-1. General
•
The appliance shall be installed in a accordance with national wiring regulations.
Capacity shortages of the power circuit or an incomplete installation may cause an electric shock or fire.
• Perform wiring of power supply complying with the rules and regulations of the local electric company.
• Never connect AC voltage power to the control wiring terminal block (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.
• Locate wiring system for the control and refrigerant piping system in the same line.
• Do not turn on the power supply of the indoor units until vacuuming of the refrigerant pipe 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.
4-2. Electrical wiring design
Determine the wire size for the indoor unit according to the number of connected indoor units downstream.
4-3. Outdoor unit power supply
Electrical characteristics
MCA : Maximum Circuit Amps
MOCP : Maximum Overcurrent Protection (Amps)
Model name
Normal Voltage
(V-Ph-Hz)
Voltage Range
Compressor
Fan Motor
Power Supply
Min
Max
kW
kW
MCA
MOCP
MCY-MHP0404HT-E
230 - 1 - 50
198
264
3.75
0.100
×
2
23.5
32.0
MCY-MHP0504HT-E
230 - 1 - 50
198
264
3.75
0.100
×
2
26.5
32.0
MCY-MHP0604HT-E
230 - 1 - 50
198
264
3.75
0.100
×
2
28.0
32.0
Pull box
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Single phase
50 Hz 220-240V
Earth leakage breaker
power switch
Circuit breaker
(Earth leakage breaker)
Main switch
(Fuse)
Outdoor
power source
Indoor
power source
