Lochinvar 5 3 Wiring Diagram, Low Voltage, Caution High Voltage Spark Lead, 120 VAC

Installation & Operation Manual

12 Diagrams (continued)

Figure 12-3Wiring Diagram

SHIELD
CASCADE
RS485
SHIELD
TANK
SENSOR
OUTDOOR
SENSOR
SYSTEM
SENSOR
EXTERNAL		-
CONTROL	10VDC
		+
SHIELD
MOD BUS
RS485
SHIELD
ENABLE
TANK
THERMOSTAT
HEX 1
FLOW
SWITCH
HEX 2
FLOW
SWITCH
LOUVER
PROVING
RUNTIME
CONTACTS
ALARM
CONTACTS

X3

				CM 1 PC INTERFACE
				X5
					CONTROL
					MODULE 1
PC INTERFACE					X8
CONNECTION BOARD						X1-4
CN3-16	CN3			CM 2 PC		X1-2
				INTERFACE
		CN4
CN3-15
					X4
CN3-14
CN3-13						X1-3
CN3-12
CN3-11
CN3-10						X1-6
CN3-9						X1-5
CN3-8
CN3-7						X1-8
						X1-1
CN3-6
				4 CONDUCTORS
CN3-5		CN1
CN3-4
CN3-3		CN1-10
CN3-2		CN1-2		MOD BUS
CN3-1				KIT		X5-5
		CN1-9				X5-13
						X5-6
				PK		X5-12
					X6-2	X5-4
				BL		X5-10
					X6-7
CN2-14		CN1-11	GY	GY	X6-6
						X5-7
CN2-13			W			X5-14
CN2-12		CN1-3		W	X6-1
			PK			X5-3
		CN1-4
CN2-11						X5-8
			T
CN2-10		CN1-5
			BR	T		X5-1
		CN1-6			X6-9
CN2-9		CN1-13	OR		X6-5	X5-2
CN2-8		CN1-14		OR/BK	X6-10	X5-9
CN2-7		CN1-12	PK			X6-8
CN2-6		CN1-15	RD	PR	X3-2
			RD			X2-2
CN2-5
		CN1-16				X2-1
CN2-4		CN1-8	PR	RD	X3-4
CN2-3		CN1-7	PR
				PR
CN2-2					X3-1
CN2-1				RD	X3-3
	CN2	CN1-1				X1-7

LOW VOLTAGE
120 VAC
HIGH VOLTAGE
					BOX DEPICTS
					OPTIONAL ITEMS
			LOUVER		JUNCTION
			CONTACTS		BOX
			R1	R2
			RELAY					LOUVER
BR			BOARD	OR
			K1
								BOILER 2
				OR
PR			K2	BR
								BOILER 1
				BR
			K3	PR				SYSTEM
				PR
GY								PUMP
						GND		HW PUMP
			ON/OFF SWITCH					RELAY
BK						GND
								L
W							GND	120V SUPPLY
								N
GR					GND
	R W G
	1	2	3
BLOWER
1 2	3 4		5			LOUVER
						RELAY 1
R
T						FLAP
W
					APS	VALVE
BK
OR
GY
AUTO RESET LIMIT					O-TEMP HEX SW
BL
PR
				HI-LIMIT
BK						INLET
RD						SENSOR
						OUTLET
W						SENSOR
						FLUE
Y
						SENSOR
BK							GAS
Y							VALVE
					SPARK		G
					ROD
W/RD						FLAME ROD

CAUTION HIGH VOLTAGE SPARK LEAD	BLOCKED
	DRAIN
	CONTROL
	MODULE 2
	X8
	BR/W
	X1-4

						X4	X1-3
							X1-5
	LOW GAS		HIGH GAS				X1-6
	PRESSURE SWITCH
			PRESSURE 1
							X1-8
							X1-1
			HIGH GAS
			PRESSURE 2
						X6-5
							X5-5
					BR	X6-9	X5-13
					OR/BK		X5-6
LOW		TEST				X6-10
	J3-1	SWITCH					X5-12
WATER		OR/BK		PROBE
	J3-2		BK				X5-4
CUTOFF	J3-3						X5-10
	J3-4
BOARD	J3-5
	J3-6	BL
		RESET					X5-7
							X5-14
	J2-1		OR
	J2-2
	J2-3
							X5-3
							X5-8
							X5-1
							X5-2
							X5-9
							X6-8
						PR

GY
W
BK
GR
RD	R W G
1	2	3
BLOWER
1 2 3 4		5
RD
T/BK
W
BK
OR/BK
GR/BK
AUTO RESET LIMIT
BL/BK
PR/BK
PK
BK/RD
RD/BK
W/BK
Y/BK

LOUVER

RELAY 2

APS FLAP VALVE

O-TEMP HEX SW

HI-LIMIT

INLET

SENSOR

OUTLET

SENSOR

FLUE

SENSOR

	X3-2	X2-2
RD	X3-4	X2-1
PR	X3-1
RD	X3-3
		X1-7
CAUTION HIGH VOLTAGE SPARK LEAD

BK	GAS
Y	VALVE
SPARK	G
ROD
RD/W	FLAME ROD

	Notes:
	1.	All wiring must be installed in accordance with: local, state, provincial and national code requirements per either N.E.C. in USA or C.S.A. in Canada.
	2.	If any original equipment wire as supplied with the appliance must be replaced, it must be replaced with wire having same wire gauge (AWG) and rated for a
	minimum of 105°C. Exceptions: Replacement high vo ltage spark lead and ribbon cables must be purchased from the factory. Use of a non-approved spark lead
WIRING DIAGRAM	or ribbon cables can lead to operational problems which could result in non-repairable damage to the integrated controller or other components.
	3. Actual connector block locations may vary from those shown on diagrams. Refer to actual components for proper connector block locations when using
LBL20045 REV M
	diagrams to troubleshoot unit.

65