Bryant 581A/B manual 300 579F180

TYPICAL WIRING SCHEMATICS — 579F

(579F240, 208/230 V Shown) (cont)

-300
579F180	a48-5655

LEGEND AND NOTES

LEGEND

AHA	—	Adjustable Heat Anticipator	IFCB —		Indoor-Fan Circuit Breaker	TRAN — Transformer
BKR W/AT —		Breaker with Amp Turns	IFM	—	Indoor-Fan Motor	Terminal (Marked)
C	—	Contactor, Compressor	IGC	—	Integrated Gas Unit Controller
CB	—	Circuit Breaker	L	—	Light	Terminal (Unmarked)
CC	—	Cooling Compensator	LED	—	Light-Emitting Diode
CLO	—	Compressor Lockout	LOR	—	Lockout Relay	Terminal Block
COMP	—	Compressor Motor	LPS	—	Low-Pressure Switch
CR	—	Control Relay	LS	—	Limit Switch	Splice
CT	—	Control Transformer	MGV —		Main Gas Valve
DM	—	Damper Motor	NEC —		National Electrical Code	Splice (Marked)
DU	—	Dummy Terminal	OFC —		Outdoor-Fan Contactor
EQUIP	—	Equipment	OFM —		Outdoor-Fan Motor	Splice (Field Supplied)
FPT	—	Freeze Protection Thermostat	PL	—	Plug Assembly
FU	—	Fuse	PRI	—	Primary	Factory Wiring
GND	—	Ground	RS	—	Rollout Switch	Field Control Wiring
HPS	—	High-Pressure Switch	SN	—	Sensor
HS	—	Hall Effect Sensor	SR	—	Solenoid Relay	Field Power Wiring
HV	— High Voltage		SW	— Switch		Accessory or Optional Wiring
I	— Ignitor		TB	— Terminal Block
IDM	— Induced-Draft Motor		TC	— Thermostat Cooling		To indicate common potential
IFC	— Indoor-Fan Contactor		TH	— Thermostat Heating		only; not to represent wiring.

NOTES:

1.Compressor and fan motors thermally protected; 3-phase motors protected 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 economizer.

4.IFCB must trip amps is equal to or less than 140% full load amps.

5.On 208/230-v unit, TRAN1 is factory wired to ORN lead for 230-v power supply. If unit is to run on 208-v power supply, TRAN1 must be rewired. Disconnect the BLK wire on TRAN1 and connect wire to 208-v RED wire. Insulate 230-v ORN wire.

6.The CLO locks out the compressor to prevent short cycling on compressor overload and safety devices. Before replacing CLO, check these devices.

7.Number(s) indicates the line location of used contacts. A bracket over (2) numbers signifies a single-pole, double-throw contact. An underlined number signifies a normally closed contact. A plain (no line) number signifies a normally open contact.

168