3
LEGEND
CCN —
Carrier Comfort Network
CHT —
Cooler Heater Thermostat
CLHR —
Cooler Heater Relay
CPSC —
Compressor Protection and Control System
CXB —
Expansion Board Accessory
EMM —
Energy Management Module
EQUIP GND —
Equipment Ground
EXV —
Electronic Expansion Valve
FB —
Fuse Block
FIOP —
Factory-Installed Option
LED —
Light-Emitting Diode
LEN —
Local Equipment Network
LLSV —
Liquid Line Solenoid Valve
NEC —
National Electrical Code
TB —
Terminal Block
TDR —
Time-Delay Relay
TXV —
Thermostatic Expansion Valve
Fig. 2 — Mounting EMM Module and Terminal Block, 040-110 and 230B-315B Sizes