Bryant 580D manual Legend For Typical Wiring Schematics

TYPICAL WIRING SCHEMATIC (579F240-300, 460-v shown) (cont)

LEGEND FOR TYPICAL WIRING SCHEMATICS

AHA	Ð Adjustable Heat Anticipator	HV	Ð High Voltage	PRI	Ð Primary
BKR W/AT Ð Breaks with Amp Turns		I	Ð Ignitor	QT	Ð Quadruple Terminal
BR	Ð Burner Relay	IDM	Ð Induced-Draft Motor	R	Ð Relay
C	Ð Contactor, Compressor	IFC	Ð Indoor (Evaporator)	RS	Ð Rollout Switch
CAP	Ð Capacitor		Fan Contactor	SR	Ð Solenoid Relay
CB	Ð Circuit Breaker	IFCB	Ð Indoor (Evaporator)	SEN,SN	Ð Sensor
CC	Ð Cooling Compensator		Fan Circuit Breaker	SW	Ð Switch
CH	Ð Crankcase Heater	IFM	Ð Indoor (Evaporator)	TB	Ð Terminal Block
CLO	Ð Compressor Lockout		Fan Motor	TC	Ð Thermostat Cooling
COMP	Ð Compressor Motor	IGC	Ð Integrated Gas Unit Controller	TDR	Ð Time-Delay Relay
CR	Ð Control Relay	IP	Ð Internal Protector	TH	Ð Thermostat Heating
CT	Ð Current Transformer	L	Ð Light	TRAN	Ð Transformer
DM	Ð Damper Motor	LLSV Ð Liquid Line Solenoid Valve			Terminal (Marked)
DU	Ð Dummy Terminal	LOR	Ð Lockout Relay
EC	Ð Enthalpy Control	LPS	Ð Low-Pressure Switch		Terminal (Unmarked)
ER	Ð Economizer Relay	LS	Ð Limit Switch		Terminal Block
EQUIP	Ð Equipment	MAT	Ð Mixed-Air Thermostat
EPS	Ð Emergency Power Supply	MGV	Ð Main Gas Valve		Splice
	(9 v Battery)	MTR	Ð Motor
FPT	Ð Freeze Protection Thermostat	OAT	Ð Outdoor-Air Thermostat		Factory Wiring
FU	Ð Fuse	OFC	Ð Outdoor (Condenser)
					Field Wiring
GND	Ð Ground		Fan Contactor
					To Indicate Common
GVR	Ð Gas Valve Relay	OFM	Ð Outdoor (Condenser)
HPS	Ð High-Pressure Switch		Fan Motor		Potential Only, Not
HS	Ð Hall Effect Sensor	PL	Ð Plug Assembly		To Represent Wiring

NOTES FOR 579F240-300 UNITS:

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, and CB1 and CB2 (156%).

5.On TRAN1 use BLK lead for 460-v power supply.

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 signi®es a single-pole, double-throw contact. An underlined number signi®es a normally closed contact. A plain (no line) number signi®es a normally open contact.

8.TDR switches 1 and 2 to be set to ON for a 3-second delay.

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