White Rodgers 37-6334a installation instructions Zone Valve N.C

WIRING CONT.

All wiring should be done according to local and national electrical codes

DIAGRAMS FOR SYSTEMS WHERE BURNER AND CIRCULATOR OPERATION IS INDEPENDENT OF THERMOSTATS

TRANSFORMER

N

LINE 24 VAC

W-R 2-WIRE HEATING THERMOSTATS

Fig. 6 Zone Valve (N.C.)

HOT

BLUE BROWN

ZONE VALVES (N.C.)

DIAGRAM FOR SYSTEMS WHERE INTERNAL TRANSFORMER OF RELAY CONTROL SUPPLIES POWER FOR ZONE VALVES

	TYPE 668
	OIL BURNER CONTROL
	F		TYPE 956
			FLAME		W-R 2-WIRE HEATING THERMOSTATS
	F		DETECTOR
	T
IGNITION	T
TRANS.
		BLACK	RELAY/TRANSFORMER	BLUE	BROWN
	ORANGE
	WHITE		W
				BLACK
		HIGH	Y
		LIMIT		BLACK
BURNER MOTOR
		TRANSFORMER
			COM
			STAT
N	WHITE		R		ZONE VALVES (N.C.)
			BLUE
LINE	BLACK				COMMON
HOT							24 VAC
			G		MUST BE N.E.C.
					CLASS 1 WIRING	HIGH LIMIT	GAS VALVE
			BLACK
		N.O.	N.C.		G (BLK)
			RELAY COIL		Fig. 7a Diagram for Gas-Fired System,
		RED
					eliminate Oil Burner for Gas-Fired system

Fig. 7

TAPE

OFF

CIRCULATOR

MOTOR

Diagram for Oil-Fired system using Relay/ Transformer with Zone Valves (N.C.)

DIAGRAMS FOR SYSTEMS WHERE EXTERNAL TRANSFORMER REQUIRED FOR POWERING FOR ZONE VALVES

		W-R 2-WIRE HEATING THERMOSTATS
ADDITIONAL
ZONES
						RELAY/TRANSFORMER
STAT
BLUE			BLUE						HOT
	BLUE	BROWN		BROWN
									LINE
BLACK					BLACK		1	2	N
						T1
BLACK							C1	C2
BLACK					BLACK	T2	B1	B2
BLACK
									IGN.
									TRANS.
TRANSFORMER		ZONE VALVES (N.C.)	TRANSFORMER
N			N			CIRCULATOR
LINE			LINE
						MOTOR			BURNER
HOT			HOT
									MOTOR

Fig. 8

Diagram for for System using Relay/transformer with Zone Valves (N.C.)

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