Weil-McLain III Wiring - continued, LGB-6to LGB-23 Series 2 - Control Supplement, Steam, Water

LGB-6 to LGB-23Series 2 – Control Supplement

III Wiring – continued

STEAM WATER SCHEMATIC WIRING DIAGRAM

LIMIT CIRCUIT			LIMIT CIRCUIT
		HIGH
OPERATING	LOW WATER	LIMIT		LOW WATER
CONTROL	CUT-OFF	CONTROL
				CUT-OFF
					(NOTE 7)
			TEMPERATURE
			OPERATING/LIMIT
			COMBINATION	THESE TERMINALS
JUNCTION			CONTROL
				TO BE JUMPERED
BOX	WIRE NUTS (4)			WHEN L.W.C.O. IS	PILOT
				NOT USED
					(NOTE 9)
FROM TRANSFORMER			FROM TRANSFORMER
		TO LIMIT CIRCUIT
	SERVICE SWITCH				HIGH GAS
	(BY OTHERS)				PRESSURE
H			TRANSFORMER		SWITCH
					(WHEN USED)
FROM					(NOTE 5)
			BK

	PILOT PROVING		MAIN FLAME
	MODULE		PROVING MODULE
	MV		MV
	MV/PV		MV/PV
	PV		PV
	GND (BURNER)		GND (BURNER)
	G		G
	24V (GND)		24V (GND)
	24V		24V
		(NOTE 7)
	SENSE		SENSE
	SPARK		SPARK
		UNIVERSAL
		SPARK
	TERMINAL	IGNITION	WIRE TIE CLIP
	BLOCK	CONTROL
1	2		R
	PRE-WIRED PANEL

(NOTE 8)

MAIN FLAME

SENSOR

FUSED		R
DISCONNECT	120	24
	V.A.C.	V.A.C.
N	W	C

	FIRING RATE CONTROL
	(WHEN USED)		W	BL
	BK
PILOT SOLENOID
VALVE	MV	PV	MV	PV
	MV/PV		MV/PV		MAIN GAS VALVE - TWO
	SECONDARY W	BL	W	BL	STAGE COMBINATION
	GAS VALVE				VALVE W/REGULATOR

BK

NO. 1 BASE WIRING

WIRE NUTS (3)

(SIZES 6 THRU 23)

EQUIPMENT

GROUND (NOTE 10)

(NOTE 7)

PILOT (NOTE 9)

HIGH GAS

PRESSURE

SWITCH

(WHEN USED) (NOTE 5)

	PILOT PROVING		MAIN FLAME
	MODULE		PROVING MODULE
	MV		MV
	MV/PV		MV/PV
	PV		PV
	GND (BURNER)		GND (BURNER)
	G		G
	24V (GND)		24V (GND)
	24V		24V
		(NOTE 7)
	SENSE		SENSE
	SPARK		SPARK
		UNIVERSAL
		SPARK
	TERMINAL	IGNITION	WIRE TIE CLIP
	BLOCK	CONTROL
1	2		R
	PRE-WIRED PANEL

(NOTE 8)

MAIN FLAME

SENSOR

BK

	R
120	24
V.A.C.	V.A.C.
W	C
TRANSFORMER

WIRE NUTS (2)

		FIRING RATE CONTROL		W
	BK	(WHEN USED)			BL
PILOT SOLENOID						MAIN GAS VALVE - TWO
VALVE		MV	PV	MV	PV
						STAGE COMBINATION
		MV/PV		MV/PV		VALVE W/REGULATOR
	SECONDARY W		BL	W	BL
	GAS VALVE

BK

ELECTRICAL SHOCK HAZARD, CAN CAUSE SEVERE INJURY OR DEATH.

DISCONNECT POWER BEFORE INSTALLING AND/OR SERVICING.

NOTES:

1.ALL WIRING MUST BE INSTALLED IN ACCORDANCE WITH:

A.U.S.A. - NATIONAL ELECTRICAL CODE AND ANY OTHER NATIONAL, STATE, OR LOCAL CODE REQUIREMENTS.

B.CANADA - C.S.A. C22.1 CANADIAN ELECTRICAL CODE PART 1 AND ANY OTHER NATIONAL, PROVINCIAL, OR LOCAL CODE REQUIREMENTS.

2.ALL WIRING EXTERNAL TO BOILER JACKET MUST BE:

A.U.S.A. - N.E.C. CLASS 1.

B.CANADA - C.S.A. C22.1 C.E.C. PART 1.

3.IF ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED, TYPE 105C OR ITS EQUIVALENT MUST BE USED. EXCEPTION, SEE NOTE 7.

4.REFER TO CONTROL COMPONENT INSTRUCTIONS PACKED WITH BOILER FOR APPLICATION INFORMATION.

NO. 2 BASE WIRING

(SIZES 13 THRU 23)

LOW VOLTAGE FIELD

HIGH VOLTAGE FIELD

LOW VOLTAGE FACTORY

HIGH VOLTAGE FACTORY

IGNITION/SENSING CABLE

5.	STANDARD EQUIPMENT FOR LGB-21 THRU LGB-23.
		MV/PV	MAIN GAS VALVE TERMINAL.
6.		TERMINAL ON MAIN GAS VALVE IS A SINGLE TERMINAL (COMMON)
	FOR LOW AND HIGH FIRE OPERATORS.
7.	REFER TO CONTROL SUPPLEMENT FOR GROUND LEADWIRE ATTACHMENT.		CONTROL MODULE TERMINAL.
	IF ORIGINAL GROUND LEADWIRE AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED,
	TYPE 125 C OR ITS EQUIVALENT MUST BE USED.		IGNITION CONTROL
8.	WIRES ARE FACTORY INSTALLED TO CONTROL PANEL, BUT MUST BE FIELD		PANEL TERMINAL.
	CONNECTED TO GAS VALVES AND FIRING RATE CONTROL TERMINALS (WHEN USED).		TRANSFORMER TERMINAL.
9.	PILOT LEADWIRES ARE NOT FIELD REPLACEABLE. REPLACE PILOT ASSEMBLY IF NECESSARY.		FACTORY WIRED TO CONTROL -
			FIELD WIRED TO GAS
10.		DENOTES FIELD INSTALLED CHASSIS GROUND.	VALVE OR FIRING RATE CONTROL.
11.	ALL CONTACTS SHOWN WITHOUT POWER APPLIED - OFF SHELF CONDITION.

6 Part Number 550-141-916/1001