Lochinvar SNR200-100 Installation & Service Manual, Low Voltage, 120 VAC, High Voltage

TM

Installation & Service Manual

14 Diagrams (continued)

Figure 14-2Wiring Diagram

DISPLAY	LOW VOLTAGE	WARNING
	120 VAC
		DISCONNECT POWER
	HIGH VOLTAGE
		BEFORE SERVICING

INTEGRATED CONTROL

X3

JUNCTION

BOX DEPICTS

PC

BOX

X8

OPTIONAL ITEMS

INTERFACE

CONNECTION BOARD

OR

L

DHW

W

W

N

GND

CN1

CN2

X1-5

PUMP

PUMP

RELAY

3

EXTERNAL

1

CN2-9

OR

X6-10

1

2

BK

4

LIMITS

2

CN2-3

X6-5

X1-3

OR

X1-6

BK

BK

L

L

120V

W

N

GND

GND

SUPPLY

N

PR

TERMINAL STRIP

ALARM

5

CN2-7

X3-4

CONTACTS

6

CN2-1

PR

X3-2

X1-8

G

R

RUN-TIME

3

CN2-8

X3-1

R

CONTACTS

R

X1-1

4

CN2-2

X3-3

R W G

BLOWER

1

2

3

1 2 3 4

5

X5-5

R

T

X5-13

W

CN5

X5-6

BL

BK

24 VAC

CN5-1

CN2-6

X6-2

X5-12

GY

BL

BL

LOW

CN5-3

CN2-12

X6-7

X5-7

MANUAL RESET

BR

PR

PR

WATER

CN5-4

CN2-11

X6-9

X5-14

HI-LIMIT

CUT-OFF

OR/BK

Y

AIR PRESSURE

COM

CN5-2

CN2-4

X6-3

OR

Y

CN2-10

X6-8

OR/BK

SWITCH

X5-11

OR

BLOCKED

GAS

P

P

CN4-3

X5-3

DRAIN

PRESSURE

P

X5-4

OR

OR

SWITCH

CN4-6

CN2-5

X6-4

AUTO RESET

GY

GY

X5-10

HI-LIMIT

BK

X5-8

S2

INLET

R

S1

SENSOR

TANK

S4

CN4-1

X5-1

OUTLET

SENSOR

CN4-4

CN3

X4

X5-2

W

S3

SENSOR

FLUE

EXTERNAL

+

CN4-5

Y

0-10V

X5-9

SENSOR

CN4-2

CONTROL

-

BK

X2-2

GAS

CN4

CN3

Y

X2-1

VALVE

W/R

FLAME

X1-7

ROD

TR1

SPARK

G

ROD

CAUTION HIGH VOLTAGE SPARK LEAD

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 diagrams to troubleshoot unit.

WIRING DIAGRAM

LBL20025 REV A

71