Lochinvar 151 2 Wiring Diagram, Installation & Operation Manual, LOW VOLTAGE 120 VAC HIGH VOLTAGE

Installation & Operation Manual

13 Diagrams (continued)

Figure 13-2Wiring Diagram

LOW VOLTAGE 120 VAC HIGH VOLTAGE

BOX DEPICTS

OPTIONAL ITEMS

BOX DEPICTS DUAL SENSOR SINGLE HOUSING

						CONNECTION BOARD
		ALARM				1
ALARMBELL	BELLJUMPER	CONTACTS				2
		LOUVER				7
		RUN-TIME				3
		CONTACTS				4
		24 VAC LOUVER				5
		RELAY COIL				6
		PROVING SWITCH				8	CN5-1
							CN5-8
		GAS PRESSURE				9
							CN5-2
		SWITCH				10
							CN5-9
SWITCH							CN5-3
							CN5-11
							CN5-10
SILENCING				TANK		13	CN5-4
							CN5-12
			FLOW			11	CN5-5
		SWITCH				12	CN5-14
		THERMOSTAT				14	CN5-6
							CN5-13
							CN5-7
						15
		TANK				16
		SENSOR				17
						18
		SHIELD				19
		A				20
		CASCADE				21
		B
		SHIELD				22
							CN6
		BMS		+	0-10V	23
		IN	-			24
		RATE		+	0-10V	25
		OUT	-			26
		SHIELD				27
		MODBUS		A		28
		OPTION		B		29
		SHIELD				30
		LOW			24 VAC	CN7-1
		CUT-OFF			COM	CN7-2	CN8-1 CN8-2 CN8-3
						CN7-4
		WATER				CN7-3
							R BL G

BK BK

BK

BK

BK

BK BK

BK

BK

BK

BK

BK

BK

BK

INTEGRATED
CONTROL			JUNCTION	L	N
		COM	BOX
X-7	X1-3	OR/BK	OR
			OR		DHW
		NO			PUMP
	X1-4
		PR/W COM	PR
X4-7	X1-2		PR		BUILDING
X4-14					RECIRC.
X4-6					PUMP
X4-13		NO
X4-5
X4-12		ON/OFF
X4-11
		SWITCH		L	120V
X4-4	X1-6	BK	L
X4-3	X1-5	W	N	GND	SUPPLY
X4-8				N
X4-10
X4-2
X4-9	X1-8	G
X4-1	X1-1	R
			TRANSFORMER
		R W G	3.5A
			AW 801
		1 2 3	ONLY
		BLOWER
		1 2 3 4 5
X6	X5-7	R
	X5-16	T
	X5-8	W
	X5-15	BK
	X5-9	Y
	X5-1	BL
	X5-2	O
	X5-10	P	BLOCKED DRAIN
			SWITCH
	X5-11	O/BK	AIR PRESSURE
			SWITCH
		-T
	X5-4
		R/BK	OPERATING SENSOR S1a
	X5-12	-T	HIGH LIMIT SENSOR S1b
		GY
	X5-6	-T	INLET SENSOR S2
		P/BK
	X5-5	-T	FLUE SENSOR S3a
		W/BK
	X5-13	-T	FLUE SENSOR S3b
		PR

X5-14

X6-3 X6-2 X6-1

X6-4

Y

X2-2

BK

GAS VALVE

X4-1

O

X9-1

X2-1

Y

@24VAC

X4-2

GY

X9-2

X4-3

X9-3

MODBUS BOARD

G

X1-7

W/R

FLAME SENSOR

G

X4-4

X9-4

MTR-01

TR2

SPARK

SHIELD

ROD

GROUNDING

X5-1

CAUTION

X5-2

HIGH VOLTAGE SPARK LEAD

JUMPER

X1-1

BK

X1-2

W

X1-3

G

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 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	WIRING DIAGRAM
diagrams to troubleshoot unit.	LBL20134 REV B

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