Legend for fig. 66-73 – Carrier NP034-074 User Manual
Page 57
LEGEND FOR FIG. 66-73
ACC
— Accessory
BP
— Building Pressure
C
— Contactor
CB
— Circuit Breaker
CCB
— Control Circuit Breaker
CF
— Check Filter Switch
CLO
— Compressor Lockout
COM
— Common
COMM — Communication Plug
COMP — Compressor
COND
— Condenser
CR
— Control Relay
CS
— Centrifugal Switch
CV
— Constant Volume
DP
— Duct Pressure
DPT
— Discharge Pressure Transducer
DSIO
— High-Voltage Relay Module
DU
— Dummy
EC
— Enthalpy Control
EQUIP — Equipment
FS
— Fan Status Switch
FU
— Fuse
GND
— Ground
GR
— Gas Relay
HHR
— Hydronic Humidifier Relay
HIR
— Heat Interlock Relay
HPS
— High-Pressure Switch
HR
— Heater Relay
HSIO
— Keypad and Display Module
HV
— High Voltage
HYD
— Hydronic
I
— Ignitor
ICP
— Ignitor Control Pack
IDC
— Induced Draft Contactor
IDM
— Induced Draft Motor
IFC
— Indoor (Evaporator) Fan Contactor
IFCB
— Indoor (Evaporator) Fan Circuit Breaker
IFM
— Indoor (Evaporator) Fan Motor
IGV
— Inlet Guide Vanes
IGVM
— Inlet Guide Vanes Motor
LPS
— Low-Pressure Switch
LS
— Limit Switch
LSR
— Limit Switch Relay
MG
— Main Gas
MGV
— Main Gas Valve
MM
— Head Control Pressure Device
MPER
— Modulating Power Exhaust Relay
MV
— Main Valve
NC
— Normally Closed
NO
— Normally Open
OFM
— Outdoor (Condenser) Fan Motor
PCB
— Power Exhaust Circuit Breaker
PEC
— Power Exhaust Contactor
PEDM
— Power Exhaust Damper Motor
PEM
— Power Exhaust Motor
PG
— Pilot Gas
PGV
— Pilot Gas Valve
PIC
— Processor-Integrated Controls
P, PL
— Plug
PS
— Power Supply (5 VDC)
PSIO
— Processor Module
PV
— Pilot Valve
PWR
— Power
RES
— Resistor
RFC
— Return Fan Contactor
RFDM
— Return Fan Damper Motor
RS
— Rollout Switch
SEN,SN — Sensor
SPT
— Suction Pressure Transducer
SW
— Switch
TB
— Terminal Block
TDO
— Timed Discrete Output
TH
— Thermostat
TRAN
— Transformer
VLV
— Valve
Field Wiring
Factory Wiring
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