Lochinvar 400, 801 operation manual Diagrams, LOW Voltage 120 VAC High Voltage

Installation & Operation Manual

13 Diagrams

Figure 13-1Wiring Diagram

LOW VOLTAGE 120 VAC HIGH VOLTAGE

BOX DEPICTS

OPTIONAL ITEMS

BOX DEPICTS DUAL SENSOR SINGLE HOUSING

ALARM BELL	BELL JUMPER
SILENCING SWITCH

CONNECTION BOARD

INTEGRATED

CONTROL

ALARM

1

L

N

X-7

RELAY

JUNCTION

CONTACTS

2

BOX

BOARD

DHW

RUN-TIME

3

PUMP

CONTACTS

4

X1-3

OR CN2-4

K1

CN1-5

OR

24 VAC LOUVER

5

CN1-6

OR

RELAY COIL

6

X1-4

BR CN2-2

BOILER

LOUVER

K2

CN1-3

BR

PUMP

7

CN5-1

BK

X4-7

PROVING SWITCH

8

CN1-4

BR

CN5-8

BK

X4-14

GAS PRESSURE

9

X1-2

PR CN2-3

K3

CN1-1

PR

CN5-2

BK

X4-6

SWITCH

10

SYSTEM

CN5-9

BK

X4-13

CN2-1

CN1-2

PR

PUMP

CN5-3

BK

X4-5

CN5-10

BK

X4-12

ON/OFF

CN5-11

BK

X4-11

SWITCH

L

FLOW

11

CN5-4

BK

X4-4

X1-6

BK

120V

CN5-5

BK

X4-3

X1-5

W

GND

SUPPLY

SWITCH

12

CN5-14

BK

X4-8

N

TANK

13

CN5-12

BK

X4-10

THERMOSTAT

14

CN5-6

BK

X4-2

HEAT/LOOP

1

15

CN5-13

BK

X4-9

X1-8

G

DEMAND

16

CN5-7

BK

X4-1

HEAT/LOOP

2

17

X1-1

R

DEMAND

18

HEAT/LOOP

3

19

TRANSFORMER

DEMAND

20

SYSTEM

21

R W G

3.5A

KB 801

SENSOR

22

1

2 3

ONLY

OUTDOOR

23

SENSOR

24

TANK

25

BLOWER

26

SENSOR

27

28

1 2 3 4 5

SHIELD

29

A

30

CASCADE B

31

SHIELD

32

CN6

X6

X5-7

R

X5-16

T

BMS

+

33

X5-8

W

0-10V

IN

-

34

X5-15

BK

SYS PUMP

+

0-10V

35

X5-9

Y

IN

-

36

BLR PUMP

+

0-10V

37

X5-1

BL

OUT

-

38

X5-2

O

RATE

+

0-10V

39

O-TEMP HEX SW

P BLOCKED DRAIN SWITCH

OUT

-

40

X5-10

SHIELD

41

AIR PRESSURE SWITCH

MODBUS

A

42

X5-11

O/BK

-T

OPTION

B

43

X5-4

R/BK

OPERATING SENSOR S1a

SHIELD

44

-T

24 VAC

CN7-1

X5-12

GY

HIGH LIMIT SENSOR S1b

LOW

X5-6

P/BK

-T

WATER

CN7-2

CN8-3

CN8-1 CN8-2

INLET SENSOR S2

CN7-3

-T

CUT-OFF

X5-5

COM

CN7-4

W/BK

FLUE SENSOR S3a

X5-13

PR

-T

R BLG

FLUE SENSOR S3b

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

MODBUS BOARD

X4-3

G

X9-3

X1-7

W/R

FLAME SENSOR G

X4-4

X9-4

SHIELD

MTR-01

TR2

SPARK

X5-1

ROD

GROUNDING

CAUTION

HIGH VOLTAGE SPARK LEAD

X5-2

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 diagrams to troubleshoot unit.

WIRING DIAGRAM LBL20116 REV C

77