Lochinvar 000 through 2 Wiring Diagram continued, 1,500,000 - 1,300,000 - 2,000,000 Btu/hr Models

Wiring Diagram (continued)

1,500,000 - 1,300,000 - 2,000,000 Btu/hr Models

WARNING:To avoid possible shock hazard, disconnect power before servicing. GY HOT

BK
W
Y
BL
BR			Y
LOUVER
			COM
RELAY
GY
GY	FC-FC+
	5
BK	S1	ENI
	4
	L1	L

R	BR	BR
	NO	BK	LOUVER
		STD.	RELAY
		BK	CONTACTS
	IGNITION
	MODULE

F2 F1

BR

BL

	SURFACE	GY
	IGNITER
		W
	GY	GY
	COMMUNICATION
BL	CABLE #1	O
24 VAC
Y

	LAR
2	TU
L2	EN
1
S2/FS

11	N/A
10	TH
9	PI
8	LV2

-

+

STATUS

LED

Y

BL/BK

J3

3 2 1

O/BK

P

U

FLOW
SWITCH
C	NO	O
	O
	NC
	PU

OPTIONAL
Low	High	O
Gas	Gas
	NC	O
NO O/ C
C
BK	NO
NC
PU		PU

AIR		Blocked		Louver		BL
SWITCH
		Drain	Proving Sw			T
	NO	NO		C	NO
		C
C			W	BR
	T	BK			NC
O		NC
	NC			OPTIONAL
		R
						PU
		TOGGLE
				MANUAL
		SWITCH		OVERRIDE
	PU					PU
				C	1	2
				Y

7		RESET
6		LV1	R
5		MV
4		PS
3		FF
2		M/S
1		FF
W R BK			WBK R
1	2	3	4	3	2
1	2	3	BYPASS
W			VALVE

	BL
	IGNITION
	RESET
R	24VAC GAS
	VALVE
R	Y

R GAS VALVE RELAY

OR AT OPEN

BL

W/BK

Y

R	R	Y
R		OPTIONAL

3J
	51
	41
UOT	31
mV/a	21
	11
mV/a	01
MH	9
O

COMMUNICATION

CABLE #1

COMMUNICATION
CABLE #2
INPUTS
1	PU
1
2	PU
3	PU
4	PU
5	Y

PU	50 Hz Limit
	Resistor
Y	1.2K Ohm
	P
	OPTIONAL
TO VFD	TO VFD
TERMINAL	TERMINAL
NUMBER 14	NUMBER 15
OPTIONAL 50 Hz LIMIT RESISTOR

CONTROL PANEL COMMUNICATION CABLE CONNECTION

COM

BK

COM

BK

NO	VENT VALVE
	BK	W
	EXT. GAS VALVE

120VAC GAS
NO	VALVE
	W
BK
	Y

	8			3
M										BYPASS SENSOR
	7
HO		BYPASS		2		1	2
MOH	6			1			1		1
		SENSOR
						OA
	5
						SENSOR
M
	4	1			1			1
HO			2			2			2
	3		1			1			1	OUTLET SENSOR
	2	ENABLE			INLET
								OUTLET
ND	1	SWITCH			SENSOR			SENSOR
G		G	BK		BK
	CHASSIS						RUN/STOP SWITCH
	GROUND

2	2	OA SENSOR
1	1	OPTIONAL
2	2	INLET SENSOR
1	1

COMMUNICATION CABLE #3

REAR COMMUNICATION CABLE CONNECTION

NOTE: DO NOT DISCONNECT

CABLE FROM BLOWER.

T

IO

N

A

T

O

M

R

T

O

R

A

T

O

I

N

BLOWER

ASSEMBLY

Y

Y

UVERS

COMMON

CLOSED INPUT

OPEN INPUT

LOUVER

CONTACTS

EXT. GAS		INLET
		SENSOR
	VALVE
		2	1
1	BK

2120VAC

3OUT

4 W

BLOCKED
DRAIN
1	2	3
T PU BR
NMO MCO	KEDBLOC	PENO

NOTES:

(1)WARNING: To avoid possible shock hazard, disconnect power before servicing.

(2)Where possible, switches and circuitry are shown in power off state.

(3)When replacing wiring, use wire of equal or higher temperature and gage.

(4)Schematic shows electrical connections only. Please refer to wiring diagram in owner's manual for routing and pin-outs for all connector blocks.

(5)Pump delay is standard on water heaters.

LBL90002 REV A

79