Carrier 50TJ016-028 Installation, Start-Up And Service Instructions Manual page 34

AHA — Adjustable Heat Anticipator
BRK W/AT — Breaks with Amp Turns
C — Contactor, Compressor
CB — Circuit Breaker
CC — Cooling Compensator
CH — Crankcase Heater
CLO — Compressor Lockout
COMP — Compressor Motor
CMP — Compressor Protection Module
CR — Control Relay
— Current Transformer
CT
— Discharge Air Thermistor
DAT
— Damper Motor
DM
DU — Dummy Terminal
EC — Enthalpy Control
EQUIP — Equipment
FL — Fuse Link
FLA — Full Load Amps
FPT — Freeze Protection Thermostat
FU — Fuse
LEGEND AND NOTES FOR FIG. 44 AND 45
GND — Ground
HC — Heater Contactor
HPS — High-Pressure Switch
HTR — Heater
IFC — Indoor-Fan Contactor
IFCB — Indoor-Fan Circuit Breaker
IFM — Indoor-Fan Motor
IFR — Indoor-Fan Relay
L — Light
LLSV — Liquid Line Solenoid
LPS — Low-Pressure Switch
— Limit Switch
LS
NEC — National Electrical Code
NEUT— Neutral
OAT — Outdoor-Air Thermostat
OFC — Outdoor-Fan Contactor
OFM — Outdoor-Fan Motor
OP — Overcurrent Protection
PL — Plug Assembly
PRI — Primary
NOTES:
1. Compressor and fan motor(s) thermally protected. Three-phase motors pro-
tected against primary single-phasing conditions.
2. If any of the original wire furnished must be replaced, it must be replaced with
type 90° C wire or its equivalent.
3. Jumpers are omitted when unit is equipped with EconoMi$er.
5. IFCB must trip amps are equal to or less than 140% FLA.
6. The CLO locks out the compressor to prevent short cycling on compressor over-
load and safety devices. Before replacing CLO, check these devices.
7. Number(s) indicates the line location of used contacts. A bracket over (2) num-
bers signifies a single-pole, double-throw contact. An underlined number sig-
nifies a normally closed contact. Plain (no line) number signifies a normally open
contact.
LEGEND
34
TB — Terminal Block
TC — Thermostat Cooling
TH — Thermostat Heating
TRAN — Transformer
Terminal (Marked)
Terminal (Unmarked)
Terminal Block
Splice
Factory Wiring
Field Control Wiring
Option/Accessory Wiring
To indicate common potential
only; not to represent wiring.