Bohn PRO3 Installation And Operation Manual page 27

ELECTRICAL WIRING DIAGRAMS
AIR DEFROST SYSTEMS - THREE PHASE - P3 CABINET
CC
T1 L1
T2 L2
T3 L3
TB1
PFC
BLUE
L1 T1 BLACK
WHITE
TFC
RED BLACK
RED
WHITE
1 2 3
L2
L1 L3
COMPRESSOR
CC -- COMPRESSOR CONTACTOR DLH -- DRAIN LINE HEATER
CCH -- CRANKCASE HEATER
DLT -- DRAIN LINE THERMOSTAT
CFM -- CONDENSER FAN MOTOR EFM -- EVAPORATOR FAN MOTOR
DH -- DEFROST HEATER GND -- GROUND
PRIMARY SINGLE PHASE PROTECTION PROVIDED PRIMARY SINGLE PHASE PROTECTION PROVIDED
USE COPPER CONDUCTORS ONLY
GND
208-230V/3ø/60HZ
WN
DLH
GRAY GRAY
BLUE
CCH
BLACK BLACK
RED RED
CFM
RELAY R1 RELAY R1
EFM EFM
BLUE
CFM
SW
BLACK
BLUE
LEGEND
HL -- HEATER LIMIT THERMOSTAT
HPS -- HIGH PRESSURE SWITCH
PFC -- PRESSURE FAN CYCLE SWITCH
RC -- RUN CAPACITOR
FACTORY WIRING
FIELD WIRING
(WHEN PLUG
NOT
PROVIDED)
WN
DLT
WN
BLACK BLACK
WN
9 3
BLACK BLACK
RELAY R1
YELLOW
TB1
YELLOW
1 1
7 7
BLACK
BLACK
CC
BLACK
ORANGE
HPS BROWN
A R1 B
RT -- ROOM THERMOSTAT TFC -- TEMPERATURE FAN CYCLE SWITCH
SC -- START CAPACITOR
WN -- WIRE NUT
SR -- START RELAY
SW -- SWITCH
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