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LEGEND FOR TYPICAL WIRING SCHEMATIC

NOTES FOR TYPICAL WIRING SCHEMATIC

1. If any of the original wire furnished must be replaced, it must be replaced with

Type 90 C wire or its equivalent.

2. Three-phase motors are protected under primary single-phasing conditions.

3. Thermostat:

HH07AT170, 172, 174, and P272-2783.

Subbase:

HH93AZ176, 178, and P272-1882, 1883.

4. Set heat anticipator for first stage at .14 amp, second stage at 0.20 amp, except

for 008 and 009 low heat. Set both first and second stage at 0.14 amp.

5. Use copper conductors only.

IMPORTANT: Refer to unit wiring label for actual unit wiring.

AHA —

Adjustable Heat Anticipator

C —

Contactor, Compressor

CAP —

Capacitor

CB —

Circuit Breaker

CC —

Cooling Compensator

CLO —

Compressor Lockout

COMP —

Compressor Motor

CONN —

Connection

D —

Diode

EC —

Enthalpy Control

ECON —

Economizer

EPS —

Emergency Power Supply (9-Volt Battery)

EQUIP GND —

Equipment Ground

ER —

Economizer Relay

FPT —

Freeze-Protection Thermostat

FS —

Flame Sensor

FSS —

Filter-Status Switch

FU —

Fuse

GV —

Gas Valve

GVR —

Gas Valve Relay

HPS —

High-Pressure Switch

HS —

Hall-Effect Sensor

HV —

High Voltage

I —

Ignitor

IDM —

Induced-Draft Motor

IFC —

Indoor (Evaporator) Fan Contactor

IFM —

Indoor (Evaporator) Fan Motor

IGC —

Integrated Gas Unit Controller

LPS —

Low-Pressure/Loss-of-Charge Switch

LS —

Limit Switch

MGV —

Main Gas Valve

MTR —

Motor

NC —

Normally Closed

NO —

Normally Open

OAT —

Outdoor-Air Thermostat

OFC —

Outdoor (Condenser) Fan Contactor

OFM —

Outdoor (Condenser) Fan Motor

P —

Plug

PL —

Plug Assembly

QT —

Quadruple Terminal

R —

Relay

RS —

Rollout Switch

SAT —

Supply-Air Thermostat

SEN —

Sensor

SW1 —

Switch Fully Open

SW2 —

Switch Fully Closed

SW3 —

Switch Minimum Vent Position

SW4 —

Switch Maximum Vent Position

TC —

Thermostat-Cooling

TH —

Thermostat-Heating

TRAN —

Transformer

Field Splice

Terminal (Marked)

Terminal (Unmarked)

Terminal Block

Splice

Splice (Marked)

Factory Wiring

Field Control Wiring

Field Power Wiring

Accessory or Optional Wiring

To indicate common potential only,

not to represent wiring.

Brand	Carrier
Model	48HJE004
Category	Heat Pump
Language	English

Carrier 48HJE004 User Manual

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Carrier 48HJE004 Specifications

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