Wiring Diagram - Three Phase - McQuay ACU018ARAY Installation And Maintenance Manual

WIRING DIAGRAM - THREE PHASE

R V BR
FC
POWER SUPPLY
(SEE RATING PLATE)
USE COPPER CONDUCTORS ONLY
MAIN
V
AUX
BR
CM
BK
IO
BK
CH
WIRING CODE
FACTORY WIRING
HIGH VOLTAGE
LOW VOLTAGE
WIRE NUT
LINE SPLICE
Page 10
HP
BL
Y
BR
V
R
BK
BK
BL R
V
Y
T1 T2 T3
C
L1 L2 L3
BK
BK
Y
BK C COMP
R
BK
COMPONENT CODE
OUTDOOR FAN MOTOR
CM
COMP COMPRESSOR
C CONTACTOR
DEFROST CONTROL
DC
LOW VOLTAGE DEFROST RELAY
LDVR
CH CRANKCASE HEATER
INTERNAL OVERLOAD
IO
LOW PRESSURE CONTROL
LP
HIGH PRESSURE CONTROL
HP
FIELD WIRING
OUTDOOR THERMOSTAT (OPTIONAL)
OT
FAN CAPACITOR
FC
DEFROST THERMOSTAT
DFT
REVERSING VALVE COIL
RVC
HIGH VOLTAGE DEFROST RELAY
HVDR
CONTROLS SHOWN WITH UTILITIES
IN 'ON'POSITION AND THERMOSTAT
IN 'OFF' POSITION.
V
Y
CONNECT TO APPROP. CONTROL
MIN. 40 VA. 24 VOLT
CIRCUIT HAVING
N.E.C. CLASS 2 TRAMSFORMER OR FOR
CERTIFIED C.S.A INSTALLATION. USE C.S.A.
CERTIFIED ENERGY LIMITED CLASS 2
TRANSFORMER.
EQUIPMENT GROUND USE
COPPER CONDUCTORS ONLY
COLOR CODE
BK
BLACK
R
RED
Y YELLOW
BL
BLUE
V VIOLET
S
LTBL LIGHT BLUE
BR BROWN
G
GREEN
O ORANGE
W
WHITE
R
USE N.E.C. CLASS 2 WIRE
OUTDOOR POWER SUPPLY
CH
L3 L2
C C
T3 T2
2
3 1 CAP
COMP
ON
THERMOSTAT
G
FAN SWITCH
AUTO
THERMOSTAT
COOL
ANTICIPATOR
Y
COOL
R
THERMOSTAT
THERMOSTAT
OFF SYSTEM
BULB
SWITCH
HEAT
COIL
THERMOSTAT
ADJ. HEAT W
ANTICIPATOR 24V
R
LOW VOLTAGE
TRANSFORMER
INDOOR POWER SUPPLY
NOTES:
1) TO INDOOR UNIT LOW
VOLTAGE TERMINAL BLOCK &
INDOOR THERMOSTAT.
2) SEE INDOOR UNIT &
OUTDOOR UNIT INSTALLATION
INSTRUCTIONS FOR CONNECTION
OF OPTIONAL OUTDOOR THERMOSTAT.
L1 L1
C
C
T1 T1
MOTOR
CONTACTOR
COIL
FAN RELAY
COIL
C
IM-800