McQuay SWT028C User Manual

22 IM709
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 WIRING
FIELD WIRING TERMINAL
TERMINAL P.C. BOARD FACTORY WIRED
WIRE CONNECTOR
PLUG IN CONNECTOR
WIRE NUMBER
OPTION BLOCK
TERMINAL
9.
MECHANICAL JUMPER
M/J

McQuay SWT028C Specifications

General

Brand	McQuay
Model	SWT028C
Category	Air Conditioner
Language	English