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149
ACCSY
— Accessory
LON
— Local Operating Network
ACC’Y
— Accessory
LPT
— Liquid Pressure Transducer
ACC FSS
— Accessory Fan Status Switch
LS
— Limit Switch
AN
— Analog
LT
— Liquid Temperature
APS
— Air Pressure Switch
LVT
— Low Volume Terminal
BP
— Building Pressure
MBB
— Main Base Board
BR
— Blower Relay
MGV
— Main Gas Valve
C
— Compressor Contactor
MLV
— Minimum Load Valve
CB
— Compressor Circuit Breaker
MMF
— Motormaster Fuse
CCB
— Control Circuit Breaker
MMR
— Motormaster Relay
CCH
— Crankcase Heater
MMV
— Motormaster VFD
CCHR
— Crankcase Heater Relay
MP
— Communications
CCN
— Carrier Comfort Network®
NEC
— National Electrical Code
CCT
— Cooling Coil Thermistor
OA
— Outdoor Air
CEM
— Controls Expansion Module
OAQ
— Outdoor Air Quality
CMR
— Compressor Modulation Relay
OAT
— Outdoor-Air Thermistor
CO
— Convenience Outlet
OD
— Outdoor
COMP
— Compressor
OFC
— Outdoor Fan Contactor
CR
— Control Relay
OFM
— Outdoor Fan Motor
CSB
— Current Sensor Board
OL
— Overload
CXB
— Compressor Expansion Board
PE
— Power Exhaust
DGS
— Discharge Gas Sensor
PECB
— Power Exhaust Circuit Breaker
DI
— Digital Input
PEM
— Power Exhaust Motor
DP
— Duct Pressure
PL
— Plug Assembly
DPT
— Discharge Pressure Transducer
PP
— Communications
DTT
— Discharge Temperature
Thermistor
PPSS
— Plenum Pressure Safety Switch
DUS
— Digital Unloader Solenoid
PS
— Pressure Switch
ECC
— Evaporative Condenser Control
PTC
— Positive Temperature
Coefficient Power Reference
ECON
— Economizer
RACFM
— Return Air CFM
EQUIP
— Equipment
RAT
— Return Air Thermistor
EXV
— Electronic Expansion Valve
RF
— Return Fan
FS
— Filter Switch
RFCB
— Return Fan Circuit Breaker
FS/FP
— Filter Switch/Filter Pressure
RFM
— Return Fan Motor
FTS
— Filter Switch
RGT
— Return Gas Thermistor
FU
— Fuse
RHPS
— Relative Humidity Power
Supply
GND
— Ground
RS
— Rollout Switch
GVR
— Gas Valve Relay
RXB
— Rooftop Control Board
HC
— Heater Contactor
SACFM
— Supply Air CFM
HIR
— Heat Induction Relay
SAT
— Supply Air Thermistor
HGBP
— Hot Gas Bypass
SC30
— Signal Conditioner Control
Board
HMV
— Humidi-MiZer Valve
SCB
— Staged Gas Control Board
HPS
— High-Pressure Switch
SCCR
— Short Circuit Current Rating
HS
— Hall Effect Sensor
SCR
— Silicon Controlled Rectifier
HV
— High Voltage
SEN
— Sensor
HVS
— Humidi-MiZer
®
Valve Solenoid
SPT
— Suction Pressure Transducer
I
— Igniter
ST
— Suction Temperature
IAQ
— Indoor Air Quality
TB
— Terminal Block
IDM
— Induced Draft Motor
TR1
— Timer Relay Control Board
IFCB
— Indoor Fan Circuit Breaker
TRAN
— Transformer
IFM
— Indoor Fan Motor
UPC
— Unitary Protocol Converter
IGC
— Integrated Gas Controller
VAV
— Variable Air Volume
LEN
— Local Equipment Network
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
Summary of Contents for WeatherExpert 48N2
Page 135: ...135 Fig 18 48 50N Typical Power Schematic Nominal 075 Ton Unit Shown ...
Page 136: ...136 Fig 19 48 50N Typical Power Schematic Nominal Ton 90 150 Units Shown ...
Page 137: ...137 Fig 20 48 50N Main Base Board Input Output Connections ...
Page 138: ...138 Fig 21 48 50N RXB EXB CEM Input Output Connections a48 9307 ...
Page 139: ...139 Fig 22 48 50N EXV SCB Input Output Connections a48 9308 ...
Page 140: ...140 Fig 23 48N Typical Modulating Gas Heat Unit Control Wiring ...
Page 141: ...141 Fig 24 50N Typical Electric Heat Unit Control Wiring ...
Page 144: ...144 Fig 27 48N Typical Gas Heat Section Wiring Nominal Ton 120 to 150 Units ...
Page 145: ...145 Fig 28 48 50N Typical Power Component Control Wiring 460 v ...
Page 146: ...146 Fig 29 48 50N Component Control Wiring 575 v Nominal Ton 075 to 150 Units ...
Page 147: ...147 Fig 30 48 50N Component Arrangement Power Box ...
Page 148: ...148 Fig 31 48 50N Component Arrangement Control Box ...
Page 240: ...240 APPENDIX D VFD INFORMATION CONT Fig G VFD Bypass Wiring Diagram WHEN USED ...