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ACCSY —
Accessory
ACC'Y
—
Accessory
AN
—
Analog
APS
—
Air Pressure Switch
BR
—
Blower Relay
C
—
Compressor Contactor
CB
—
Compressor Circuit Breaker
CCB
—
Control Circuit Breaker
CCH
—
Crankcase Heater
CCN
—
Carrier Comfort Network
CCT
—
Cooling Coil Thermistor
CEM
—
Controls Expansion Module
CMR
—
Compressor Modulation Relay
COMP
—
Compressor
CR
—
Control Relay
CSB
—
Current Sensor Board
CXB
—
Compressor Expansion Board
DGS
—
Discharge Gas Sensor
DI
—
Digital Input
DPT
—
Discharge Pressure Transducer
D/S
—
Downshot (Vertical)
DTT
—
Discharge Temperature Thermistor
DUS
—
Digital Unloader Solenoid
ECB
—
Economizer Control Board
ECON
—
Economizer
EQUIP
—
Equipment
ERV
—
Energy Recovery Ventilation
EXB
—
Economizer Control Board
EXH
—
Exhaust
EXV
—
Electronic Expansion Valve
FIOP
—
Factory-Installed Options
FU
—
Fuse
GND
—
Ground
GVR
—
Gas Valve Relay
HC
—
Heater Contactor
HIR
—
Heat Induction Relay
HMV
—
Humidi-MiZer Valve
HPS
—
High-Pressure Switch
HS
—
Hall Effect Sensor
HV
—
High Voltage
RED LED - STATUS
J1
J2
J3
J4
J5
J6
J7
LEGEND FOR FIG. 18-30
HVS
—
I
—
IAQ
—
IDM
—
IFC
—
IFCB
—
IFM
—
IFO
—
IGC
—
®
LEN
—
LLS
—
LLT
—
LON
—
LS
—
MBB
—
MGV
—
MLV
—
MM
—
MMF
—
MMR
—
MMV
—
MP
—
MSP
—
NEC
—
OA
—
OAQ
—
OAT
—
OD
—
OFC
—
OFM
—
OL
—
OPT
—
PE
—
PEC
—
PECB
—
PEM
—
PLP
—
PMO
—
PMR
—
PP
—
GREEN LED - LEN (LOCAL EQUIPMENT NETWORK)
CEPL130346-01 HK 50AA029 CE BO 430346
STATUS
LEN
Fig. 31 — Main Base Board (MBB)
Humidi-MiZer Valve Solenoid
Ignitor
Indoor Air Quality
Induced Draft Motor
Indoor Fan Contactor
Indoor Fan Circuit Breaker
Indoor Fan Motor
IGC Fan Output
Integrated Gas Controller
Local Equipment Network
Liquid Line Solenoid
Liquid Line Transducer
Local Operating Network
Limit Switch
Main Base Board
Main Gas Valve
Minimum Load Valve
Motormaster
®
MotorMaster V Fuses
MotorMaster V Relay
MotorMaster V Control
Modular Motor Protector
Motor Starter Protector
National Electrical Code
Outdoor Air
Outdoor Air Quality
Outdoor-Air Thermostat
Outdoor
Outdoor Fan Contactor
Outdoor Fan Motor
Overload
Option
Power Exhaust
Power Exhaust Contactor
Power Exhaust Circuit Breaker
Power Exhaust Motor
Phase Loss Protection
Phase Monitor Option
Phase Monitor Relay
Communications
YELLOW LED -
CCN (CARRIER COMFORT NETWORK)
INSTANCE JUMPER (SET TO 1)
J8
147
PS
—
Pressure Switch
Positive Temperature Coefficient
PTC
—
Power Reference
RAT
—
Return Air Thermistor
RCB
—
Rooftop Control Board
RET
—
Return
RF
—
Return Fan
RS
—
Rollout Switch
RXB
—
Rooftop Control Board
SAT
—
Supply Air Thermistor
SCB
—
Staged Gas Control Board
SCR
—
Silicon Controlled Rectifier
SEN
—
Sensor
SPT
—
Suction Pressure Transducer
S/S
—
Side Shot
STDU
—
Standard Tier Display Unit
TB
—
Terminal Block
TRAN
—
Transformer
UPC
—
Unitary Protocol Converter
VAV
—
Variable Air Volume
VFD
—
Variable Frequency Drive
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.
J9
J10
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