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7 − 1
T-364
SECTION 7
ELECTRICAL WIRING SCHEMATICS
7.1 INTRODUCTION
This section contains the Electrical Schematics and Wiring Diagrams.
SYMBOL DESCRIPTION
AMBS AMBIENT SENSOR (C − 22)
C CONTROLLER (L − 21)
CB1 CIRCUIT BREAKER − 460 VOLT (J − 1)
CB2 OPTIONAL CIRCUIT BREAKER − DVM (OPTION)
(D − 1) TERMINAL BLOCK WHEN CB2 NOT PRESENT
CF CONDENSER FAN CONTACTOR (N − 8, L − 11)
CH COMPRESSOR CONTACTOR (L − 10, P − 1)
CI COMMUNICATIONS INTERFACE MODULE (OPTION)
(A − 4)
CL COOL LIGHT (OPTION) (L − 12)
CM CONDENSER FAN MOTOR (E − 11, G − 11, R − 9)
CP COMPRESSOR MOTOR (T − 4)
CPDS DISCHARGE TEMPERATURE SENSOR (A − 23)
CS CURRENT SENSOR (M − 2)
DHBL DEFROST HEATER − BOTTOM LEFT (R − 8)
DHBR DEFROST HEATER − BOTTOM RIGHT (T − 7)
DHML DEFROST HEATER − MIDDLE LEFT (R − 7)
DHMR DEFROST HEATER − MIDDLE RIGHT (T − 7)
DHTL DEFROST HEATER − TOP LEFT (R − 7)
DHTR DEFROST HEATER − TOP RIGHT (T − 8)
DL DEFROST LIGHT (OPTION) (L − 7)
DPT DISCHARGE PRESSURE TRANSDUCER (K − 23)
DTS DEFROST TEMPERATURE SENSOR (C − 23)
DUV DIGITAL UNLOADER VALVE (F − 24)
DVM DUAL VOLTAGE MODULE (OPTIONAL) (D − 1)
DVR DUAL VOLTAGE RECEPTACLE (OPTIONAL) (F − 2)
EEV ELECTRONIC EXPANSION VALVE (R − 16)
EF EVAPORATOR FAN CONTACTOR − HIGH SPEED
(N − 11, K − 13)
EM EVAPORATOR FAN MOTOR (T − 11, T − 13, E − 14, F − 14,
G − 14)
EPT EVAPORATOR PRESSURE TRANSDUCER (H − 23)
ES EVAPORATOR FAN CONTACTOR − LOW SPEED
(P − 10, L − 13)
ETS EVAPORATOR TEMPERATURE SENSOR (SUCTION)
(D − 23)
ESV ECONOMIZER SOLENOID VALVE (J − 11)
F FUSE (C − 7, D − 7, F − 21, G − 21)
FLA FULL LOAD AMPS
HPS HIGH PRESSURE SWITCH (G − 9)
HR HEATER CONTACTOR (N − 7, L − 15)
HW HEATER CONTACTOR (R − 8)
LEGEND
SYMBOL DESCRIPTION
HS HUMIDITY SENSOR (OPTIONAL) (F − 23)
HTT HEAT TERMINATION THERMOSTAT (E − 15)
ICF INTERROGATOR CONNECTOR FRONT (T − 23)
ICR INTERROGATOR CONNECTOR REAR (T − 24)
IP INTERNAL PROTECTOR (E − 14, F − 11, G − 14)
IRL IN RANGE LIGHT (OPTION) (K − 15)
PA UNIT PHASE CONTACTOR (K − 9, L − 7, K − 12)
PB UNIT PHASE CONTACTOR (K − 8, L − 9, N − 3)
PR USDA PROBE RECEPTACLE (M − 24, N − 24, P − 24)
PTC PTC FOR VENT POSITIONING SENSOR (N − 17)
RM REMOTE MONITORING RECEPTACLE (OPTION)
(K − 7, L − 7, K − 12, L − 12, K − 15, L − 15)
RRS RETURN RECORDER SENSOR (C − 23)
RTS RETURN TEMPERATURE SENSOR (B − 23)
SPT SUCTION PRESSURE TRANSDUCER (H − 23)
SRS SUPPLY RECORDER SENSOR (L − 23)
ST START − STOP SWITCH (K − 5)
STS SUPPLY TEMPERATURE SENSOR (A − 23)
TC CONTROLLER RELAY − COOLING (J − 9)
TCC TRANSFRESH COMMUNICATIONS CONNECTOR
(OPTION) (D − 6)
TCP CONTROLLER RELAY − PHASE SEQUENCING
(J − 8, J − 9)
TE CONTROLLER RELAY − HIGH SPEED EVAPORATOR
FANS (J − 14)
TH CONTROLLER RELAY − HEATING (J − 15)
TF CONTROLLER RELAY − DEFROST (E − 7)
TI IN − RANGE RELAY (J − 15)
TL CONTROLLER RELAY − COOL LIGHT (J − 12)
TN CONTROLLER RELAY − CONDENSER FAN (J − 11)
TP TEST POINT (H − 9, F − 10, H − 11, G − 12, H − 13,
G − 15, L − 17)
TR TRANSFORMER (M − 3)
TRANS AUTO TRANSFORMER 230/460 (OPTION) (D − 3)
TRC TRANSFRESH REAR CONNECTOR (OPTION) (E − 7)
TS CONTROLLER RELAY − ECONOMIZER SOLENOID
VALVE (E − 10)
TV CONTROLLER RELAY − LOW SPEED EVAPORATOR
FANS (J − 13)
VPS VENT POSITION SENSOR (UPPER) (N − 17)
WCR WETTING CURRENT RESISTOR (OPTION) (J − 12)
WP WATER PRESSURE SWITCH (OPTION) (E − 12)
Figure 7 − 1 LEGEND − Standard Unit Configuration