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Large Cabinet Models Wiring. 208-230/3/60 voltage.
Diagram 4. Wiring Diagram for System, Air Defrost 208-230/3/60 (C): Models PTT099H2C and PTT128H2C.
Cooler - Air Defrost Systems - Three Phase
YELLOW
BLACK
RT
N
L C
BLACK
BLUE
BLACK
BLUE
-(3) Hours of compressor run time between defrosts.
Approximate dial settings of room thermostat dial:
-Room temp sensor has 59" lead length
-Defrost sensor has 59" lead length and a blue label.
-Defrost termination temperature = 3.5°C / 38°F
Minimum compressor off time - 4 minutes
Minimum compressor run time - 1 minute
Room Thermostat Notes:
0 - Unit Off ( Not an electrical disconnect)
1 - 52°F / 11°C
3 - 45°F / 7°C
4 - 41°F / 5°C
5 - 38°F / 3°C
6 - 34°F / 1°C
CC
RT -- ROOM THERMOSTAT
CFM -- CONDENSER FAN MOTOR
CC -- COMPRESSOR CONTACTOR
EFM -- EVAPORATOR FAN MOTOR
LEGEND
HL -- HEATER LIMIT THERMOSTAT
DH -- DEFROST HEATER
GND -- GROUND
RC -- RUN CAPACITOR
SR -- START RELAY
USE COPPER CONDUCTORS ONLY
NOT
FACTORY WIRING
FIELD WIRING
(WHEN PLUG
PROVIDED)
SC -- START CAPACITOR
HPS -- HIGH PRESSURE SWITCH
PRIMARY SINGLE PHASE PROTECTION PROVIDEDPRIMARY SINGLE PHASE PROTECTION PROVIDED
CCH -- CRANKCASE HEATER
PFC -- PRESSURE FAN CYCLE SWITCH
DLT -- DRAIN LINE THERMOSTAT
DLH -- DRAIN LINE HEATER
TFC -- TEMPERATURE FAN CYCLE SWITCH
WN -- WIRE NUT
SW -- SWITCH
COMPRESSOR
L1 L3
L2
1
2
3
208-230V/3PH/60HZ
L1T1
CC
L2T2
L3T3
GND
CFM
CFM
EFM
EFM
EFM
DLH
YELLOW
WHITE
WN
DLT
GRAY
WN
WN
GRAY BLUE
CCH
BLACKBLACK
YELLOW
PFC
WN
L1
T1
WN
TFC
Rev 2.47
EFM
EFM
EFM
Large
Cabinet
Large Cabinet
Outdoor Units Only
Outdoor Units Only
5. Wiring Information