LEGEND
C
— Contactor
CB
— Circuit Breaker
CCB
— Control Circuit Breaker
CONT — Control
DPT
— Discharge Pressure Transducer
DU
— Dummy Terminal
GND
— Ground
IFC
— Indoor (Evaporator) Fan Contactor
MMC
— Head Pressure Control Device
OAT
— Outdoor-Air Thermostat
OFC
— Outdoor (Condenser) Fan Contactor
PSIO
— Processor Module
RAT
— Return Air Thermistor
SAT
— Supply Air Thermistor
SCT
— Saturated Condensing Thermistor
SPT
— Suction Pressure Transducer
TB
— Terminal Block
TRAN — Transformer
Fig. 4 — Control Box and Connection Boxes, 054-074
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