McQuay A Series - Electrical Wiring Diagrams (Continued)

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English
CK40A & CK50A
Model Indoor 5CK30/40A CK40A CK50A
Outdoor 5SL35C SL40C SL50C
Voltage range** 380-420V/3Ph /50Hz+ N+
!
or 208-230V/3Ph/60Hz+N+
!
Recommended fuse* (A) 10/20 16/25
Power supply cable size* (mm
2
) (50/60Hz) 1.5/2.5 2.5/4.0
Number of conductors 55
Interconnection cable size* (mm
2
) (50/60Hz) 1.5/1.5 1.5/1.5
Number of conductors 44
COMP
L
N
COMP
L
N
S
R
T
N
There must be a double pole switch with minimum
3mm contact gap and fuse/circuit breaker as
recommended in the fixed installation circuit.
CK40A / CK50A <> SL40C / SL50C
Indoor Unit
Terminal
Block
Interconnection Cable
Outdoor Unit
Terminal
Block
Power Supply Cable
!
CK20AR / CK25AR / CK30AR
Model Indoor CK20AR CK25AR CK30AR
Outdoor SL20BR/20CR SL25BR/25CR SL28CR/30CR
Voltage range** 220-240V/1Ph/50Hz+
!
or 208-230V/1Ph/60Hz+
!
Recommended fuse* (A) 16 20 25
Power supply cable size* (mm
2
) 2.5 2.5 4.0
Number of conductors 333
Interconnection cable size* (mm
2
) 2.5 2.5 2.5
Number of conductors 556
There must be a double pole switch with minimum
3mm contact gap and fuse/circuit breaker as
recommended in the fixed installation circuit.
4WV
OF
N1
L
N2
COMP
4V
OF
N
COMP
CK20AR / 25AR <>
SL20BR / 25BR
SL20CR / 25CR
Indoor Unit
Terminal
Block
Interconnection Cable
Outdoor Unit
Terminal
Block
Power
Supply
Cable
!
Outdoor Coil Sensor
Heat Pump
IMPORTANT : * These values are for information only. They should be checked and selected to comply with local and/or
national codes and regulations. They are also subject to the type of installation and size of conductors.
** The appropriate voltage range should be checked with label data on the unit.