LEGEND and NOTES for Fig. 56-60 Ð Typical Wiring Schematics

LEGEND

AHA

Ð Adjustable Heat Anticipator

IFC

Ð Indoor Fan Contactor

TC

Ð Thermostat Cooling

BP

Ð Building Pressure

IFCB

Ð Indoor Fan Circuit Breaker

TH

Ð Thermostat Heating

BR

Ð Burner Relay

IFM

Ð Indoor-Fan Motor

TRAN

Ð Transformer

C

Ð Contactor, Compressor

IFR

Ð Indoor-Fan Relay

UL

Ð Compressor Unloader

CAP

Ð Capacitor

IGC

Ð Integrated Gas Unit Controller

VFD

Ð Variable Frequency Drive

CB

Ð Circuit Breaker

IP

Ð Internal Protector

 

Terminal (Marked)

CC

Ð Cooling Compensator

L

Ð Light

 

CCB

Ð Controller Circuit Breaker

LPS

Ð Low-Pressure Switch

 

 

CCH

Ð Crankcase Heater

MGV

Ð Main Gas Valve

 

Terminal (Unmarked)

COM

Ð Communication

NC

Ð Normally Closed

 

 

COMP

Ð Compressor Motor

NO

Ð Normally Open

 

Terminal Block

CR

Ð Control Relay

OAT

Ð Outdoor-Air Thermistor

 

 

 

DM

Ð Damper Motor

OFC

Ð Outdoor-Fan Contactor

 

Splice

DP

Ð Duct Pressure

OFM

Ð Outdoor-Fan Motor

 

EC

Ð Enthalpy Control

PEC

Ð Power Exhaust Contactor

 

Factory Wiring

EQUIP

Ð Equipment

PEM

Ð Power Exhaust Motor

 

FLA

Ð Full Load Amps

PES

Ð Power Exhaust Sequencer

 

Field Wiring

FPT

Ð Freeze Protection Thermostat

PESC Ð Power Exhaust Sequencer

 

 

 

FU

Ð Fuse

 

Controller

 

To Indicate Common Potential Only,

GRD

Ð Ground

PL

Ð Plug Assembly

 

 

Not To Represent Wiring

GVR

Ð Gas Valve Relay

R

Ð Relay

 

 

 

HPS

Ð High-Pressure Switch

RAT

Ð Return-Air Thermistor

 

 

HS

Ð Hall Effect Sensor

RS

Ð Rollout Switch

 

 

HV

Ð High Voltage

SAT

Ð Supply-Air Thermistor

 

 

IDM

Ð Induced-Draft Motor

TB

Ð Terminal Block

 

 

NOTES:

1.Connect TRAN1 to H4 for 460 v units. Connect to H3 for 230 v. If 208/230 v units are run with a 208 v power supply connect to H2.

2.Connect TRAN2 to black lead for 460 v units. Connect to orange lead for 230 v units. If 208/230 v units are run with a 208 v power supply connect to red lead.

3.Circuit breaker must trip amps are equal to or less than 156% FLA for CB1 and CB2. All others are 140%.

4.If any of the original wire furnished must be replaced, it must be replaced with type 90 C wire or its equivalent.

5.Compressors and/or fan motors are thermally protected.

6.Three phase motors are protected against primary single phasing conditions.

7.Red wire and violet wire are spliced together at the factory. The brown wire has a wire nut added at the factory.

TABLE A

THE FOLLOWING COMPRESSORS HAVE TWO PARALLEL WIRES RUN FROM TB1 TO THE COMPRESSORS

(NOT SHOWN ON LABEL DIAGRAM)

COMPRESSOR

VOLTAGE

WIRE

MODEL

QUANTITY

 

06D-537

208/230-3-60

2

TABLE B

THE FOLLOWING FAN MOTORS HAVE TWO PARALLEL WIRES RUN FROM TB1 TO THE FAN MOTORS

(NOT SHOWN ON LABEL DIAGRAM)

INDOOR

VOLTAGE

WIRE

MOTOR

QUANTITY

 

20 HP

208/230-3-60

2

50

Page 50
Image 50
Carrier EK, EW Aha, Ifcb, Tran, Ifr, Cap, Igc, Ccb, Lps, Cch, Mgv, Comp, Oat, Ofc, Equip, Pem, Pes, Fpt, Grd, Gvr, Hps

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