Figure 8.1 Legend - Carrier 69NT40-541-306 Operation And Service

ELECTRICAL WIRING SCHEMATIC AND DIAGRAMS
8.1 INTRODUCTION
This section contains Electrical Schematic and Wiring Diagrams, the diagrams are presented as follows:
Figure 8.1provides the legend for use with all figures.
Figure 8.2 provides the basic schematic diagram for units with single evaporator fan capability and VPS.
Figure 8.3 & Figure 8.4
Figure 8.5 provides the basic schematic diagram for units with normal evaporator fan capability, TransFresh
and Crankcase Heater.
Figure 8.6 & Figure 8.7provide wiring diagrams for units with normal evaporator fan capability, TransFresh
and Crankcase Heater.
SYMBOL DESCRIPTION
AMBS AMBIENT SENSOR (D- -18)
C CONTROLLER (C- -16)
CB1 CIRCUIT BREAKER 460 VOLT (J- -1)
CB2 OPTIONAL CIRCUIT BREAKER 230V (DVM OPTION)
TERMINAL BLOCK WHEN CB2 NOT PRESENT (D- -1)
CCH CRANKCASE HEATER (T- -4)
CF CONDENSER FAN CONTACTOR (M- -9, P- -6)
CI COMMUNICATIONS INTERFACE MODULE
(OPTION) (A- -4)
CH COMPRESSOR CONTACTOR (L- -8, P- -1, P- -3)
C - - L COOL LIGHT (OPTION) (L- -11)
CM CONDENSER FAN MOTOR (G- -10, T- -6)
CP COMPRESSOR MOTOR (E- -8, T- -2)
CPDS COMPRESSOR DISCHARGE SENSOR
(TEMP.) (OPTION) (C- -18)
CPSS COMPRESSOR SUCTION SENSOR
(TEMP.) (OPTION) (E- -18)
CPT CONDENSER PRESSURE TRANSDUCER (H- -19)
CR CHART RECORDER (OPTION) (A- -14)
CS CURRENT SENSOR (M- -2)
DHBL DEFROST HEATER - - BOTTOM LEFT (R- -4)
DHBR DEFROST HEATER - - BOTTOM RIGHT (T- -4)
DHML DEFROST HEATER - - MIDDLE LEFT (R- -4)
DHMR DEFROST HEATER - - MIDDLE RIGHT (T- -4)
DHTL DEFROST HEATER - - TOP LEFT (R- -3)
DHTR DEFROST HEATER - - TOP RIGHT (T- -4)
DL DEFROST LIGHT (OPTION) (M- -14 / L- -8)
DPT DISCHARGE PRESSURE TRANSDUCER
(OPTION) (K- -19)
DTS DEFROST TEMPERATURE SENSOR (D- -18)
DVM DUAL VOLTAGE MODULE (OPTION) (D- -1)
DVR DUAL VOLTAGE RECEPTACLE (OPTION) (F- -2)
E EVAPORATOR FAN CONTACTOR
(HIGH SPEED) (G- -11, H- -12, J- -10, K- -11, P- -7, P- -10)
EM EVAPORATOR FAN MOTOR (L- -10, L- -12, T- -6, T- -8)
S EVAPORATOR FAN CONTACTOR
(LOW SPEED) (G- -10, H- -11, J- -11, K- -12, R- -8, R- -11)
EF EVAPORATOR FAN CONTACTOR
(HIGH SPEED) (L- -11, M- -10, P- -7, P- -8)
EM EVAPORATOR FAN MOTOR (D- -11, F- -11, T- -8, T- -10)
ES EVAPORATOR FAN CONTACTOR
(LOW SPEED) (M- -11, R- -7)
SECTION 8
provide wiring diagrams for units with single evaporator fan capability and VPS.

Figure 8.1 Legend

LEGEND
SYMBOL DESCRIPTION
F FUSE (C- -8, D- -8, E- -16, F- -16, H- -6, G- -16)
HPS HIGH PRESSURE SWITCH (H- -8)
HR HEATER CONTACTOR (M- -13, P- -4)
HS HUMIDITY SENSOR (G- -19)
HTT HEAT TERMINATION THERMOSTAT (H- -12)
IC INTERROGATOR CONNECTOR (OPTION) (T- -19)
IP INTERNAL PROTECTOR (E- -8, G- -9, M- -10, M- -12)
(E- -9, E- -11, G- -11, H- -10)
IRL IN- -RANGE LIGHT (OPTION) (L- -13)
PR PROBE RECEPTACLE (USDA OPTION)
(F- -19, M- -20, N- -20, P- -20)
RM REMOTE MONITORING RECEPTACLE
(OPTION) (L- -8, L- -9, L- -13)
RRS RETURN RECORDER SENSOR (L- -19)
RTS RETURN TEMPERATURE SENSOR (C- -18)
SMV STEPPER MOTOR SUCTION MODULATION
VALVE (T- -14)
SPT SUCTION PRESSURE TRANSDUCER (OPTION)
(J- -20)
SRS SUPPLY RECORDER SENSOR (OPTION) (B- -18)
ST START - - STOP SWITCH (K- -5)
STS SUPPLY TEMPERATURE SENSOR (B- -18)
TC CONTROLLER RELAY - - COOLING (K- -8)
TCC TRANSFRESH COMMUNICATIONS CONNECTOR
(OPTION) (D- -7)
TE CONTROLLER RELAY (HIGH SPEED
EVAPORATOR FANS) (F- -10) (K- -11)
TF DEFROST RELAY (K- -14) (K- -8)
TFC TRANSFRESH CONTROLLER (OPTION) (G- -7)
TH CONTROLLER RELAY (HEATING) (K- -13)
TI INRANGE RELAY (K- -13)
TL CONTROLLER RELAY (COOL LIGHT) (K- -11)
TN CONTROLLER RELAY (CONDENSER FAN) (K- -9)
TP TEST POINT (E- -10, F- -9, J- -8, J- -9, J- -13, M- -14)
(F- -10, J- -8, J- -10, J- -11, J- -12, M- -13)
TR TRANSFORMER (M- -3)
TRANS AUTO TRANSFORMER 230/460 (OPTION) (D- -2)
TRC TRANSFRESH REAR CONNECTOR (OPTION) (E- -7)
TV CONTROLLER RELAY (LOW SPEED
EVAPORATOR FANS (F- -12) (K- -11)
VPS VENT POSITION SENSOR (UPPER) (OPTION) (N- -14)
WCR WETTING CURRENT RESISTER (OPTION) (J- -10)
WP WATER PRESSURE SWITCH (OPTION) (E- -9)
8–1 T-354