White Rodgers 50M56-743 Typical System Wiring Diagram, Cir N, Line N, Xfmr N, Eac N, Ro Out

WIRING

	TYPICAL SYSTEM WIRING DIAGRAM
HOT		NEUTRAL
(LINE)	120 VAC	(LINE)

			24 VAC CLASS II
			TRANSFORMER
TH	24 VAC		TR
	50M56
	COOL
	LO HEAT					CIRCULATOR
	HI HEAT
						BLOWER
	LINE
	XFMR
	EAC
	PARK
	PARK
	IND-N		INDUCER
	IND
	IGN
	IGN-N		IGNITOR
	[4-Pin Connector]
	CIR N
	LINE N
ELECTRONIC	XFMR N
	EAC N
AIR CLEANER
	Y		Y
	W		W			COMPRESSOR
						CONTACTOR
	G		G
	R		R
	C		THERMOSTAT
FLAME	FS
SENSOR
PROBE	PSI			PRESSURE SWITCH (N. O.)
	PSO
	HLI
	HLO		HIGH LIMIT			AUX. HIGH
	RO OUT
	GND		(N. C.)			LIMIT (N. C.)
			ROLLOUT
1 STAGE	RO IN					2 STAGE
	MV LO		(N. C.)
GAS						GAS
	MV HI
VALVE						VALVE
	MV COM
	TR
	TH
	[12-Pin Connector]
LEGEND			HLO	PSO	HLI	PSI
Low Voltage (24 VAC)
			MV	RO	GND	RO
Line Voltage (120 VAC)			LO	OUT		IN
N. C. = Normally closed switch	IND IGN IND	IGN	TH	TR	MV	MV
	N	N			COM	HI
N. O. = Normally open switch	4-Pin Connector		12-Pin Connector

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