Lochinvar 5 Diagrams, 1 Ladder Diagram_Part, Installation & Operation Manual, Connection Board

Installation & Operation Manual

12 Diagrams

Figure 12-1Ladder Diagram_Part 1

BOX DEPICTS

OPTIONAL ITEMS

LOW VOLTAGE 120 VAC HIGH VOLTAGE

CONTROL	CONTROL
MODULE 1	MODULE 2

LOUVER
RELAY 1	X8
X6-8		X8

				X5-7			X5-7
				24V	LOUVER		24V
				X5-4	RELAY 2		X5-4
	FLAP		AIR PRESSURE		FLAP	AIR PRESSURE
	VALVE
			SWITCH		VALVE	SWITCH
				X5-14			X5-14
			HI-LIMIT			HI-LIMIT	X6-8
				X5-8
INLET					INLET		X5-8
SENSOR					SENSOR
				X5-1			X5-1
OUTLET				X5-9	OUTLET		X5-9
SENSOR					SENSOR
				X5-2			X5-2
FLUE					FLUE
SENSOR					SENSOR
				X5-3
	BLOCKED						X5-3
	DRAIN
		AUTO RESET		X5-10	AUTO RESET		X5-10
			HIGH LIMIT			HIGH LIMIT
GAS VALVE			X2-2		GAS VALVE	X2-2
				GAS VALVE			GAS VALVE
			X2-1	RELAY		X2-1	RELAY
BLOWER			1	X5-5	BLOWER	1	X5-5
			2	X5-13		2	X5-13
			4	X5-6		4	X5-6
			5	X5-12		5	X5-12
			TR1			TR1
			X1-7			X1-7
SPARK			FLAME ROD		SPARK	FLAME ROD
ROD					ROD

CAUTION HIGH VOLTAGE SPARK LEAD CAUTION HIGH VOLTAGE SPARK LEAD

SHIELD

CASCADE

RS485

SHIELD

TANK

SENSOR

OUTDOOR

SENSOR

SYSTEM

SENSOR

-

EXTERNALCONTROL 10VDC

+

SHIELD

MOD BUS

RS485

SHIELD

CONNECTION BOARD

CN3	CN4-3
CN3-16
CN3-15	CN4-1
CN3-14	CN4-2
CN3-13	CN4-4
CN3-12	CN4-6
CN3-11
CN3-10	CN4-5
CN3-9	CN4-8
CN3-8	CN4-7
CN3-7	CN4-9
CN3-6
CN3-5	CN4-10
CN3-4
CN3-3
CN3-2
CN3-1

4CONTROL MODULE 1

X4-3

X4

X4-1

X4-2

X4-4

X4-6

X4-5

X4-8

X4-7

X4-9

X4-10

MOD BUS

KIT

X4-3

X4-1

X4-2

X4-4

CONTROL MODULE 2

X4

NOTES:

1.Where possible, switches are shown without utilities (gas, water or electricity) connected to the unit. As such, actual switch states may vary from those shown on diagrams depending upon whether utilities are connected or a fault condition is present.

2.See wiring diagram for additional notes.

LADDER DIAGRAM LBL20058 REV E

63