McQuay SWT C Series, Installation And Maintenance Manual

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Electrical Legend
Designation Description Standard Location Designation Description Standard Location
ACT1 ACTUATOR,VARIABLE INLET VANES SUPPLY FAN SECTION OAE OUTSIDE AIR ENTHALPY EXTERNAL
ACT2 ACTUATOR,BYPASS VALVE CONDENSER VALVE OAT OUTSIDE AIR TEMP. SENSOR EXTERNAL
ACT3 ACTUATOR,WATERSIDE ECONOMIZER WATERSIDE ECONO
VALVE OL10 OVERLOAD RELAY--SUPPLY FAN MAIN CONTROL
AFD10 ADJUST.FREQUENCY DRIVE--SUPPLY FAN MAIN CONTROL PB1 POWER BLOCK--TOTAL UNIT OR
COMPR/HEAT MAIN CONTROL
CCB1,2 COMPR CONTROL BOARDS--REFRIG. CIR-
CUITS MAIN CONTROL PB2 POWER BLOCK--SAF/RAF/CONTROLS MAIN CONTROL
COMPR#1-6 COMPRESSORS #1--6 COMPRESSOR SEC-
TION PC5 PRESSURE CONTROL--CLOGGED FILTER COIL SECTION
DAT DISCHARGE AIR TEMP. SENSOR NEAR FAN INLET PC7 PRESSURE CONTROL--PROOF AIRFLOW COIL SECTION
DHL DUCT HI-LIMIT COIL SECTION PM1 PHONE MODEM MAIN CONTROL
DS1 DISCONNECT--TOTAL UNIT OR
COND/HEAT MAIN CONTROL PSR1,2 PRESSURE SENSOR,REFRIGERANT LIQ. SHUTOFF VALVES
DS2 DISCONNECT--SAF/RAF/CONTROLS MAIN CONTROL PVM1 PHASE VOLTAGE MONITOR MAIN CONTROL
EWT ENT. COND. WATER SENSOR COND. WATER INLET PVM2 PHASE VOLTAGE MONITOR MAIN CONTROL
F1 FUSE--CONTROL CIRCUIT MAIN CONTROL R11 RELAY--ELECTRIC HEAT STAGE 1 HW/S
CLOSE MAIN CONTROL
FB10 FUSEBLOCK--SUPPLY FAN MAIN CONTROL R12 RELAY--ELECTRIC HEAT STAGE 2 HW/S
OPEN MAIN CONTROL
FB11,12 FUSEBLOCKS--ELECTRIC HEAT MAIN CONTROL R1-6 RELAYS--HI-PRESSURE MAIN CONTROL
FB1--6 FUSEBLOCKS--COMPRESSOR #1-6 MAIN CONTROL R18 RELAY--COOL ENABLE MAIN CONTROL
FB8 FUSEBLOCK--MAIN TRANSFORMER MAIN CONTROL R67 RELAY--ENABLE SUPPLY FAN MAIN CONTROL
FP1-6 FROST PROTECTION--REFRIG. CIRCUITS EVAP. COIL RAE RETURN AIR ENTHALPY EXTERNAL
FS1 FREEZESTAT CONTROL BT/DT COIL RAT RETURN AIR TEMP. SENSOR EXTERNAL
GRD GROUND ALL CONTROL BOX S1 SWITCH--SYSTEM ON/OFF MAIN CONTROL
HL13-14 HI-LIMITS, PWR, ELEC HEATERS ELECTRIC HEAT
JCT.BOX S4,5 SWITCHES--INVERTER BYPASS MAIN CONTROL
HP1-6 HI-PRESSURE CONTROLS, REFRIG ON COMPRESSORS
#1-6 S7 SWITCH--LOCAL ON/OFF TO CONTROLLER MAIN CONTROL
HTR-11,12 ELECTRIC HEATERS DX COIL S8 SWITCH--COOL ENABLE MAIN CONTROL
HTR-15,16 ELECTRIC HEATERS DX COIL S9 SWITCH--HEAT MAIN CONTROL
HTR1-6 CRANKCASE HEATERS ON COMPRESSORS
#1-6 SD1 SMOKE DETECTOR--SUPPLY FAN EXTERNAL
HUM1 HUMIDSTAT SENSOR EXTERNAL SD2 SMOKE DETECTOR--RETURN FAN EXTERNAL
LP1-6 LO-PRESSURE CONTROLS, REFRIG ON COMPRESSORS
#1-6 SPS1,2 STATIC PRESSURE SENSORS--DUCT/BLDG MAIN CONTROL
LWT LEAVING COND. WATER SENSOR COND. WATER OUTLET T1 TRANSFORMER--MAIN CONTROL
(LINE/115V) MAIN CONTROL
M10 CONTACTOR--SUPPLY FAN MAIN CONTROL T2 TRANSFORMER--CONTROL INPUT 24V MAIN CONTROL
M11,12 CONTACTORS--ELECTRIC HEAT CONTROL MAIN CONTROL T3 TRANSFORMER--CONTROL OUTPUT 24V MAIN CONTROL
M13,14 CONTACTORS--ELECTRIC HEAT SAFETY MAIN CONTROL TB10 TERMINAL BLOCK-- MAIN CONTROL
M15,16 CONTACTORS--ELECTRIC HEAT CONTROL MAIN CONTROL TB2 TERMINAL BLOCK--24V-FACTORY/FIELD MAIN CONTROL
M1-6 CONTACTORS--COMPR#1-6 MAIN CONTROL TB3 TERMINAL BLOCK--24V- MAIN CONTROL
M17,18 CONTACTORS--ELECTRIC HEAT SAFETY MAIN CONTROL TB4 TERMINAL BLOCK--24V-COMPRESSOR MAIN CONTROL
M30 CONTACTOR--INVERTER BYPASS MAIN CONTROL TB5 TERMINAL BLOCK--115V-FACTORY/FIELD MAIN CONTROL
MAT MIXED AIR TEMP SENSOR BEHIND FILTERS TB6 TERMINAL BLOCK--115V/24V FACTORY MAIN CONTROL
MCB1 MICROPROCESSOR CIRCUIT BOARD #1 MAIN CONTROL TB8 TERMINAL BLOCK-- MAIN CONTROL
MJ MECHANICAL JUMPERS ON TEMINAL BLOCKS VM1 VALVE MOTOR #1--HEATING NEAR HOT WATER
INLET
MP1-6 MOTOR PROTECTOR--COMPR#1-6 ON COMPRESSORS
#1-6 VM5 VALVE MOTOR #5--COOLING NEAR CHILLED WATER
NB1 NEUTRAL BLOCKS MAIN CONTROL WF1 CONDENSER WATER FLOW SWITCH NEAR CONDENSER
ZNT1 ZONE TEMP. SENSOR--SETBACK FIELD INSTALLED
200
1.
2.
3.
4.
5.
6.
7.
8.
FIELD W IRIN G
FIELD W IRIN G TERMINAL
TERMINAL P.C. B OARD FACTOR Y W IRED
WIRE C ONNECTOR
PLUG IN C ONNECTOR
WIRE N UMB ER
OPTION BLOCK
TERMINAL
9.
MEC HANICA L JUMPER
M/J