Bryant 542J, 548F Legend For Typical Wiring Schematic, TYPICAL WIRING SCHEMATIC cont, 549B036-120

TYPICAL WIRING SCHEMATIC (cont)

LEGEND FOR TYPICAL WIRING SCHEMATIC

IMPORTANT: Consult unit wiring label for actual wiring schematic.

549B036-120

AHA — Adjustable Heat Anticipator

AWG — American Wire Gage

C— Contactor, Compressor CAP — Capacitor

CB — Circuit Breaker

CC — Cooling Compensator CLO — Compressor Lockout COMP — Compressor Motor DB — Defrost Board

DFT — Defrost Thermostat ECON — Economizer

FPT — Freeze-Up Protection Thermostat FSS — Filter Status Switch

FU — Fuse GND — Ground

HC — Heater Contactor (Strip Heat) HPS — High-Pressure Switch

HR — Heater Relay

IFC — Indoor-Fan Contactor IFM — Indoor-Fan Motor LPS — Low-Pressure Switch

LSM — Limit Switch (Manual Reset) MTR — Motor

OAT — Outdoor-Air Thermostat OFM — Outdoor-Fan Motor

P — Plug

PL — Plug Assembly

QT — Quadruple Terminal

R — Relay

RAT — Return-Air Thermostat

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.

3.Thermostat: HH07AT170, 172, 174 Subbase: HH93AZ176

4.Set heat anticipator at .8 amp for 1st stage & .3 amp for 2nd stage.

5.Use copper conductors only.

6.Use copper, copper clad aluminum. or aluminum conductors.

7.

VOLTAGE	CB	MUST
RATING	HFG. PT. NO.	TRIP
24V	POTTER & BRUNFIELD	AMPS
	W2BX-1024-3.2	3.2

RVS	— Reversing Valve Solenoid
SAT	— Supply Air Thermostat
SW2	— Switch, Fully Closed
SW3	— Switch, Minimum Vent Position
TB	— Terminal Block
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

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