Lochinvar 151-286 operation manual 120 VAC, High Voltage

Outdoor Knight Boiler Installation & Operation Manual

10 Diagrams (continued)

Figure 10-2Wiring Diagram

	LOW VOLTAGE	BOX DEPICTS
	120 VAC
		OPTIONAL ITEMS
	HIGH VOLTAGE	BOX DEPICTS
		DUAL SENSOR
		SINGLE HOUSING
CONNECTION BOARD	INTEGRATED
	CONTROL	JUNCTION
		BOX

BOX DEPICTS

OPTIONAL

ITEMS

		ALARM		1
	BELL JUMPER	CONTACTS		2
ALARMBELL		RUN-TIME		3
		CONTACTS		4
		24 VAC LOUVER		5
		RELAY COIL		6
		LOUVER		7	CN5-1	BK
		PROVING SWITCH		8
					CN5-8	BK
		GAS PRESSURE		9
					CN5-2	BK
		SWITCH		10
					CN5-9	BK
SWITCH					CN5-3	BK
					CN5-10	BK
					CN5-11	BK
SILENCING					CN5-4	BK
		FLOW		11	CN5-5	BK
		SWITCH		12	CN5-14	BK
		TANK		13	CN5-12	BK
		THERMOSTAT		14	CN5-6	BK
		HEAT/LOOP	3	15	CN5-13	BK
		DEMAND		16	CN5-7	BK
		HEAT/LOOP	2	17
		DEMAND		18
		HEAT/LOOP

X-7

X4-7

X4-14

X4-6

X4-13

X4-5

X4-12

X4-11

X4-4

X4-3

X4-8

X4-10

X4-2

X4-9

X4-1

X1-3

X1-4

X1-2

X1-6

X1-5

X1-8

X1-1

OR

BR

PR

BK

W

G

R

W

W

W

KB ONLY

ON/OFF

SWITCH

L	G	DHW
N		PUMP
L	G	BOILER
N		PUMP
L	G	SYSTEM
N		PUMP
L	L	120V
N	GND	SUPPLY
	N

DEMAND 1			19
			20
SYSTEM			21
SENSOR			22
OUTDOOR			23
SENSOR			24
			25
TANK			26
SENSOR			27
			28
SHIELD			29
A			30
CASCADE			31
B
SHIELD			32
				CN6
BMS	+	0-10V	33
IN	-		34
SYS PUMP	+	0-10V	35
IN	-		36
BLR PUMP	+	0-10V	37
OUT	-		38
RATE	+	0-10V	39
OUT	-		40
SHIELD			41
MODBUS	A		42
OPTION	B		43
SHIELD			44
LOW		24 VAC	CN7-1
WATER		COM	CN7-2	CN8-1 CN8-2 CN8-3
			CN7-3
CUT-OFF
			CN7-4
				R BLG

X6

TRANSFORMER

R W G

1 2 3

	BLOWER
	1 2 3 4 5
X5-7	R
X5-16	T
X5-8	W
X5-15	BK
X5-9	Y
X5-1	BL
X5-2	O	KB 286 ONLY
X5-10	BLOCKED DRAIN SWITCH	O-TEMP HEX SW
	P
X5-11	AIR PRESSURE SWITCH
	O/BK
X5-4	-T
	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

@24VAC

Y

X4-2

GY

X9-2

MODBUS BOARD

X4-3

G

X9-3

X1-7

W/R

FLAME SENSOR

G

X4-4

X9-4

MTR-01

TR2

SPARK

SHIELD

ROD

GROUNDING

X5-1

X5-2

CAUTION

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 voltage 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.	LBL20127 REV E

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