95
LEGEND FOR Fig. 64
19XR2-E Chiller Control Schematic
1FU — Fuse, 5A
2FU — Fuse, 10A
1C — Oil Heater Contactor
2C — Oil Pump Contactor
3C — EC Valve Solenoid Open Relay
1-4IOB — Carrier Input Output Board 1-4
1-4TB — Terminal Block 1-4
ALE — Chiller Alert Relay
ALM — Chiller Alarm Relay
AUTO_DEM — Auto Demand Limit Input
AUTO_RES — Auto Water Temp Reset
CB2/3 — Circuit Breaker 2/3
CDW_DP — Cond Water Pressure Difference
CDWP — Condenser Water Pump
CDWP_V — Condenser Water Pump (Variable Speed)
CHRS — Chiller Run Status
CHST_OUT — Chiller Status Output mA
CHW_DP — Chilled Water Pressure Difference
CHWP — Chilled Water Pump
CHWP_V — Chilled Water Pump (Variable Speed)
CHWR_T — Common Chilled Water Return Temperature
CHWS_T — Common Chilled Water Supply Temperature
COND_EWP — Entering Cond Water Pressure
COND_FL — Cond Water Flow Measurement
COND_FS — Cond Water Flow Switch
COND_LH — Cond Sump Level High
COND_LL — Cond Sump Level Low
COND_LWP — Leaving Cond Water Pressure
COND_P — Condenser Pressure
CUS_ALE — Customer Alert
CVSI — Compressor VFD/Starter Interlock
DGT — Compressor Discharge Temperature
DIFF_OUT — Diffuser Output
DIFF_P — Diffuser Pressure
DMP_CL — Economizer Damper Valve Close
DMP_FC — Damper Valve Feedback Fully Close
DMP_FO — Damper Valve Feedback Fully Open
DMP_OP — Economizer Damper Valve Open
E_STOP — Remote Emergency Stop Input
ECDW — Entering Condenser Water Temperature
ECON_P — Economizer Pressure
EC VALVE — Envelope Control Valve
ECW — Entering Chilled Water Temperature
EVAP_FL — Evap Water Flow Measurement
EVAP_FS — Evap Water Flow Switch
EVAP_P — Evaporator Pressure
EVAP_T — Evap Refrigerant Liquid Temperature
FC_MODE — Free Cooling Mode
FC_SS — Free Cooling Start Switch
FS_LOCK — Fire Security Interlock
GV1_DEC — Stage 1 IGV Decrease
GV1_INC — Stage 1 IGV Increase
GV1_OUT — Guide Vane 1 Output
GV1_POS — Guide Vane 1 Actual Position
HDPV_OUT — head pressure output
HGBP_MA — EC Valve Feedback
HGBP_OP — EC Valve Solenoid/Open
HGBP_OUT — EC Valve Output mA
HMI — Human Machine Interface (Touch Screen)
HP_SW — High Pressure Switch
HR_EWT — Heat Reclaim Entering Temperature
HR_LWT — Heat Reclaim Leaving Temperature
ICE_CON — Ice Build Contact
IGV — Integrated Guide Vane
LCDW — Leaving Condenser Water Temperature
LCW — Leaving Chilled Water Temperature
LLC_EXV — Liquid Level EXV Output
LOWLIFT_OUT — Low Lift Valve Output
MTRB_OIL — Thrust Bearing Oil Temperature
MTRW1 — Motor Winding Temperature 1
MTRW2 — Motor Winding Temperature 2
MTRW3 — Motor Winding Temperature 3
OIL_EXVO — Oil EVX Output
OIL_HEAT — Oil Heater Relay
OIL_PUMP — Oil Pump Relay
OILP_DIS — Oil Supply Pressure
OILP_SMP — Oil Sump Pressure
OILT_DIS — Oil Supply Temperature
OILT_SMP — Oil Sump Temperature
POW_FDB — Power Request Feedback
POW_REQ — Power Request Output
R_RESET — Remote Reset Sensor
REF_LEAK — Refrigerant Leak Sensor
REM_CON — Remote Contact Input
REM_LOCK — Chiller Lockout Input
SAFETY — Spare Safety
T1/2 — Transformer 1/2
TFR_HIGH — Tower Fan High
TFR_LOW — Tower Fan Low
TOW_FAN — Tower Fan (Variable Speed)
VFDC_MA — FS VFD Load Current
VS_SV — Vapor Source SV
WIRING
Factory Wiring
Mechanically Connected
Power Panel Terminal Block
Conductor Male/Female Conductor
Field Wiring
Optional Wiring
Component / Panel Enclosure
Control Panel Terminal Block
Oil Pump Terminal
Wire Splice
Component Terminal
Motor Starter Panel Conn
Thermistor
Contactor / Relay Coil
Contactor Contact (N.O.)
High Pressure Switch
Pressure Transducer
Oil Heater
Circuit Breaker
BLK Black
BLU Blue
BRN Brown
GRN Green
GRY Gray
RED Red
WHT White
YEL Yellow
Y/G Yellow/green
ORG Orange
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