Carrier AquaSnap 30MPA Series Controls, Start-Up, Operation, Service, And Troubleshooting page 11

TO MULTI-CHILLER
CONTROLLER ACCESSORY
PANEL IN A DAISY CHAIN
CONFIGURATION (IF APPLICABLE)
Fig. 4 — Typical Control Wiring Schematic — 30MP015-071 Units
11
LEGEND
TERMINAL BLOCK
TERMINAL (UNMARKED)
TERMINAL (MARKED)
SPLICE
FACTORY WIRING
FIELD WIRING
ACCESSORY OR OPTION WIRING
TO INDICATE COMMON POTENTIAL
ONLY, NOT TO REPRESENT WIRING
ACCSY ACCESSORY
ALMR ALARM RELAY
AUX AUXILIARY
C CONTACTOR, COMPRESSOR
CB CIRCUIT BREAKER
CCB COMPRESSOR CIRCUIT BREAKER
CCN CARRIER COMFORT NETWORK
CH CRANKCASE HEATER
CCH CRANKCASE HEATER RELAY
CEFT COOLER ENTERING FLUID TEMP
CLFT COOLER LEAVING FLUID TEMP
CNFS CONDENSER FLOW SWITCH
CNPI CONDENSER PUMP INTERLOCK
COMP COMPRESSOR
CR CONTROL RELAY
CSB CURRENT SENSING BOARD
CWP CHILLED WATER TEMP
CWFS CHILLED WATER FLOW SWITCH
CWPI CHILLED WATER PUMP INTERLOCK
DGS DIGITAL SCROLL
DLS DEMAND LIMIT SWITCH
DPT DISCHARGE PRESSURE TRANSDUCER
DTT DISCHARGE TEMPERATURE THERMISTOR
DUS DIGITAL UNLOADER SOLENOID
EFT ENTERING FLUID TEMPERATURE
EMM ENERGY MANAGEMENT
EWT ENTERING WATER TEMPERATURE
FB FUSE BLOCK
FIOP FACTORY INSTALLED OPTION
FU FUSE
GND GROUND
HPS HIGH PRESSURE SWITCH
LEN LOCAL EQUIPMENT NETWORK
LFT LEAVING FLUID TEMPERATURE
LLSV LIQUID LINE SOLENOID VALVE
LVT LOW VOLTAGE TERMINAL
LWT LEAVING WATER TEMPERATURE
MBB MAIN BASE BOARD
MLV MINIMUM LOAD VALVE
MP MODULAR MOTOR PROTECTOR
MTT MOTOR TEMPERATURE THERMISTOR
OAT OUTDOOR AIR THERMISTOR
OFM OUTDOOR FAN MOTOR
OPT OPTION
PL PLUG
R RELAY
RGT RETURN GAS TEMPERATURE
SEN SENSOR
SPT SUCTION PRESSURE TRANSDUCER
SW SWITCH
TB TERMINAL BLOCK
TRAN TRANSFORMER
UPC UNITARY PROTOCOL CONVERTER