Carrier WeatherExpert 48N2 Controls, Start-Up, Operation, Service, And Troubleshooting page 149

ACCSY
— Accessory
ACC'Y — Accessory
ACC FSS — Accessory Fan Status Switch
AN — Analog
APS
— Air Pressure Switch
BP — Building Pressure
BR — Blower Relay
C — Compressor Contactor
CB — Compressor Circuit Breaker
CCB
— Control Circuit Breaker
CCH — Crankcase Heater
CCHR — Crankcase Heater Relay
CCN — Carrier Comfort Network®
CCT — Cooling Coil Thermistor
CEM
— Controls Expansion Module
CMR — Compressor Modulation Relay
CO — Convenience Outlet
COMP — Compressor
CR — Control Relay
CSB
— Current Sensor Board
CXB — Compressor Expansion Board
DGS — Discharge Gas Sensor
DI — Digital Input
DP
— Duct Pressure
DPT — Discharge Pressure Transducer
— Discharge Temperature
DTT
Thermistor
DUS — Digital Unloader Solenoid
ECC — Evaporative Condenser Control
ECON — Economizer
EQUIP — Equipment
EXV — Electronic Expansion Valve
FS
— Filter Switch
FS/FP — Filter Switch/Filter Pressure
FTS — Filter Switch
FU — Fuse
GND
— Ground
GVR — Gas Valve Relay
HC — Heater Contactor
HIR — Heat Induction Relay
HGBP — Hot Gas Bypass
HMV — Humidi-MiZer Valve
HPS — High-Pressure Switch
HS — Hall Effect Sensor
HV
— High Voltage
HVS — Humidi-MiZer
®
I — Igniter
IAQ — Indoor Air Quality
IDM — Induced Draft Motor
IFCB
— Indoor Fan Circuit Breaker
IFM — Indoor Fan Motor
IGC — Integrated Gas Controller
LEN — Local Equipment Network
LEGEND FOR Fig. 18-31
LON
LPT
LS
LT
LVT
MBB
MGV
MLV
MMF
MMR
MMV
MP
NEC
OA
OAQ
OAT
OD
OFC
OFM
OL
PE
PECB
PEM
PL
PP
PPSS
PS
PTC
RACFM
RAT
RF
RFCB
RFM
RGT
RHPS
RS
RXB
SACFM
SAT
SC30
SCB
SCCR
SCR
SEN
Valve Solenoid SPT
ST
TB
TR1
TRAN
UPC
VAV
VFD
— Local Operating Network
— Liquid Pressure Transducer
— Limit Switch
— Liquid Temperature
— Low Volume Terminal
— Main Base Board
— Main Gas Valve
— Minimum Load Valve
— Motormaster Fuse
— Motormaster Relay
— Motormaster VFD
— Communications
— National Electrical Code
— Outdoor Air
— Outdoor Air Quality
— Outdoor-Air Thermistor
— Outdoor
— Outdoor Fan Contactor
— Outdoor Fan Motor
— Overload
— Power Exhaust
— Power Exhaust Circuit Breaker
— Power Exhaust Motor
— Plug Assembly
— Communications
— Plenum Pressure Safety Switch
— Pressure Switch
Positive Temperature
—
Coefficient Power Reference
— Return Air CFM
— Return Air Thermistor
— Return Fan
— Return Fan Circuit Breaker
— Return Fan Motor
— Return Gas Thermistor
— Relative Humidity Power
Supply
— Rollout Switch
— Rooftop Control Board
— Supply Air CFM
— Supply Air Thermistor
— Signal Conditioner Control
Board
— Staged Gas Control Board
— Short Circuit Current Rating
— Silicon Controlled Rectifier
— Sensor
— Suction Pressure Transducer
— Suction Temperature
— Terminal Block
— Timer Relay Control Board
— Transformer
— Unitary Protocol Converter
— Variable Air Volume
— Variable Frequency Drive
149
Terminal Block
Terminal (Unmarked)
Terminal (Marked)
Splice
Factory Wiring
Field Wiring
To indicate common potential
only, not to represent wiring.
To indicate factory-installed
option or accessory