Carrier 48AJ/AK/AMD020, Installation Instructions Manual

Page: 31 / 48

31
LEGEND AND NOTES FOR FIG. 19-25
LEGEND
NOTES:
1. Factory wiring is in accordance with the National Electrical
Codes. Any field modifications or additions must be in compli-
ance with all applicable codes.
2. Use 75° C min wire for field power supply, use copper wires for
all units.
3. All circuit breakers “Must Trip Amps” are equal to or less than
156% RLA (rated load amps).
4. Compressor and fan motors are thermally protected — three
phase motors protected against primary single phase conditions.
5. Red jumper wire must be added between R and W1 for space
temperature mode and temporarily during service-test mode
when the heaters need to operate.
AUX — Auxiliary
BP — Building Pressure
C — Contactor, Compressor
CAP — Capacitor
CB — Circuit Breaker
CCB — Control Circuit Breaker
CCH — Crankcase Heater
CCN — Carrier Communication Network
CEM — Controls Expansion Module
COMP — Compressor Motor
CS — Compressor Safety
CSB — Current Sensing Board
DP — Duct Pressure
DS — Disconnect Switch
ECB — Economizer Control Board
EDT — Evaporator Discharge Sensor
EMM — Energy Management Board
FIOP — Factory-Installed Option
GND — Ground
HC — Heat Contactor
HGBP — Hot Gas Bypass
HIR — Heat Interlock Relay
HPS — High Pressure Switch
HR — Heater Relay
IAQ — Indoor Air Quality
IDM — Induced Draft Motor
IFC — Indoor Fan Contactor
IFCB — Indoor Fan Circuit Breaker
IFM — Indoor Fan Motor
IGC — Integrated Gas Unit Controller
IP — Internal Protection
LEN — Local Equipment Network
LS — Limit Switch
MBB — Main Base Board
MGV — Main Gas Valve
NEC — National Electrical Code
OARH — Outdoor Air Relative Humidity Sensor
OAT — Outdoor Air Thermostat
OFC — Outdoor Fan Contactor
OFM — Outdoor Fan Motor
PEC — Power Exhaust Contactor
PEM — Power Exhaust Motor
PL — Plug Assembly
PTC — Positive Temperature Coefficient
Power Reference
RARH — Return Air Relative Humidity Sensor
RAT — Return Air Thermistor
RS — Rollout Switch
SCB — Staged Gas Board
SCT — Saturated Condensing Temperature Sensor
TB — Terminal Block
TRAN — Transformer
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 FIOP or Accessory