Filter
Top Products
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 004-816 Printed in U.S.A. Form 48TF-C1SI Pg 46 1-01 Replaces: New
Book 1 4
Ta b 1 a 6 a
Copyright 2001 Carrier Corporation
Fig. 55 — Typical Unit Wiring Schematic
LEGEND
AHA —
Adjustable Heat Anticipator
BR —
Blower Relay
C —
Contactor, Compressor
CAP —
Capacitor
CB —
Circuit Breaker
CC —
Cooling Compensator
COMP —
Compressor Motor
CR —
Combustion Relay
D —
Diode
EC —
Enthalpy Control
ECON —
Economizer
EPS —
Emergency Power Supply
(9-Volt Battery)
EQUIP —
Equipment
ER —
Economizer Relay
FPT —
Freeze-Up Protection Thermostat
FSS —
Filter Status Sensor
GND —
Ground
GVR —
Gas Valve Relay
HPS —
High-Pressure Switch
HS —
Hall-Effect Sensor
I —
Ignitor
IDM —
Induced-Draft Motor
IFC —
Indoor-Fan Contactor
IFM —
Indoor Fan Motor
IGC —
Integrated Gas Unit Controller
LPS —
Low-Pressure Switch
LS —
Limit Switch
MGV —
Main Gas Valve
MTR —
Motor
OAT —
Outdoor-Air Thermostat
OFM —
Outdoor-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 Min. Vent Position
SW4 —
Switch Max. Vent Position
TC —
Thermostat-Cooling
TH —
Thermostat-Heating
TRAN —
Transformer
Field Splice
Marked Wire
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.
NOTES:
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.
Thermostat: HH07AT170, 172, 174 and P272-2783
Subbase: HH93AZ176, 178 and P272-1882, 1883
3. Set heat anticipator for first stage at 0.14 amp, second stage at
0.2 amp, except for 008 low heat, set both first and second stage at
0.14 amp.
4. Use copper conductors only.