Installation & Operation Manual

13 Diagrams (continued)

Figure 13-2Wiring Diagram

LOW VOLTAGE 120 VAC HIGH VOLTAGE

BOX DEPICTS

OPTIONAL ITEMS

BOX DEPICTS DUAL SENSOR SINGLE HOUSING

 

 

 

 

 

 

CONNECTION BOARD

 

 

ALARM

1

 

ALARMBELL

BELLJUMPER

CONTACTS

2

 

LOUVER

7

 

 

 

RUN-TIME

3

 

 

 

CONTACTS

4

 

 

 

24 VAC LOUVER

5

 

 

 

RELAY COIL

6

 

 

 

PROVING SWITCH

8

CN5-1

 

 

CN5-8

 

 

GAS PRESSURE

9

 

 

CN5-2

 

 

SWITCH

10

 

 

CN5-9

 

 

 

 

 

 

 

SWITCH

 

 

 

 

 

 

CN5-3

 

 

 

 

 

 

CN5-11

 

 

 

 

 

 

 

CN5-10

SILENCING

 

 

 

TANK

13

CN5-4

 

 

 

CN5-12

 

 

 

FLOW

11

CN5-5

 

 

SWITCH

12

CN5-14

 

 

THERMOSTAT

14

CN5-6

 

 

 

 

 

 

 

CN5-13

 

 

 

 

 

 

 

CN5-7

 

 

 

 

 

 

15

 

 

 

TANK

 

 

 

16

 

 

 

SENSOR

 

 

 

17

 

 

 

 

 

 

 

18

 

 

 

SHIELD

 

 

 

19

 

 

 

A

 

 

20

 

 

 

CASCADE

 

 

 

21

 

 

 

B

 

 

 

 

 

SHIELD

 

 

 

22

 

 

 

 

 

 

 

 

CN6

 

 

BMS

 

+

0-10V

23

 

 

 

IN

-

24

 

 

 

RATE

 

+

0-10V

25

 

 

 

OUT

-

26

 

 

 

SHIELD

 

27

 

 

 

MODBUS

 

A

 

28

 

 

 

OPTION

 

B

 

29

 

 

 

SHIELD

 

30

 

 

 

LOW

 

 

24 VAC

CN7-1

 

 

 

CUT-OFF

 

 

COM

CN7-2

CN8-1 CN8-2 CN8-3

 

 

 

 

CN7-4

 

 

WATER

 

 

 

CN7-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R BL G

BK BK

BK

BK

BK

BK BK

BK

BK

BK

BK

BK

BK

BK

INTEGRATED

 

 

 

 

CONTROL

 

JUNCTION

L

N

 

 

COM

BOX

 

 

 

 

X-7

X1-3

OR/BK

OR

 

 

 

 

 

OR

 

DHW

 

 

NO

 

PUMP

 

 

 

 

 

X1-4

 

 

 

 

 

 

 

 

 

 

PR/W COM

PR

 

 

X4-7

X1-2

PR

 

BUILDING

X4-14

 

 

 

RECIRC.

 

 

 

 

X4-6

 

 

 

 

PUMP

X4-13

 

NO

 

 

 

X4-5

 

 

 

 

 

 

 

 

 

X4-12

 

ON/OFF

 

 

 

X4-11

 

 

 

 

 

SWITCH

 

L

120V

X4-4

X1-6

BK

L

X4-3

X1-5

W

N

GND

SUPPLY

X4-8

 

 

 

N

 

X4-10

 

 

 

 

 

X4-2

 

 

 

 

 

X4-9

X1-8

G

 

 

 

X4-1

X1-1

R

 

 

 

 

 

 

 

 

 

 

TRANSFORMER

 

 

 

R W G

3.5A

 

 

 

AW 801

 

 

 

1 2 3

ONLY

 

 

 

 

 

 

 

 

BLOWER

 

 

 

 

 

1 2 3 4 5

 

 

 

X6

X5-7

R

 

 

 

X5-16

T

 

 

 

 

 

 

 

 

X5-8

W

 

 

 

 

X5-15

BK

 

 

 

 

X5-9

Y

 

 

 

 

X5-1

BL

 

 

 

 

X5-2

O

 

 

 

 

X5-10

P

BLOCKED DRAIN

 

 

SWITCH

 

 

 

X5-11

O/BK

AIR PRESSURE

 

 

SWITCH

 

 

 

 

-T

 

 

 

X5-4

 

 

 

 

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

 

 

 

Y

 

 

 

 

 

 

 

@24VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X4-2

 

 

 

GY

 

 

X9-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X4-3

 

 

 

 

 

 

 

 

X9-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODBUS BOARD

 

 

 

 

 

G

 

 

 

 

X1-7

 

W/R

 

 

FLAME SENSOR

G

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X4-4

 

 

 

 

 

 

 

 

 

 

X9-4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MTR-01

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TR2

 

 

 

 

 

 

 

 

 

SPARK

 

 

 

 

 

 

 

 

 

SHIELD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ROD

 

 

 

 

 

 

 

 

 

GROUNDING

 

 

 

 

 

 

 

X5-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X5-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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 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

WIRING DIAGRAM

diagrams to troubleshoot unit.

LBL20134 REV B

73

Page 73
Image 73
Lochinvar 151 operation manual 2Wiring Diagram

151 specifications

Lochinvar 151,286 is a notable model in the realm of commercial water heating solutions, designed primarily for large-scale applications. This model incorporates advanced technologies and features that set it apart in terms of efficiency, usability, and reliability.

One of the hallmark features of Lochinvar 151,286 is its high-efficiency system that leverages condensing technology. This technology enables the unit to extract additional heat from exhaust gases, allowing it to operate at an impressive annual fuel utilization efficiency (AFUE) rating. This not only reduces energy consumption, but it also significantly lowers operational costs.

The Lochinvar 151,286 is equipped with a robust stainless steel heat exchanger, which provides both durability and enhanced thermal efficiency. This design withstands the rigors of high-demand environments, making it ideal for restaurants, schools, hospitals, or any facility requiring consistent hot water supply. Its compact footprint allows it to be installed in tight spaces without sacrificing performance.

Another standout characteristic is its intelligent control system. The built-in touchscreen interface offers users an intuitive way to manage settings, monitor performance, and troubleshoot issues. This smart technology aids in simplifying maintenance and improves overall system reliability. The unit also features advanced safety protocols, including multiple sensors that monitor operation and provide alerts in case of irregular performance.

In terms of capacity, the Lochinvar 151,286 can deliver an impressive output, accommodating varying demands with ease. Its innovative modulation capabilities allow the unit to adjust its heating output based on real-time hot water needs, ensuring unmatched comfort and efficiency.

Supporting the model’s performance are versatile connectivity options. Lochinvar 151,286 can integrate seamlessly with building management systems, allowing facility managers to monitor and control heating processes remotely. This level of connectivity not only enhances control but also supports energy-saving strategies across the facility.

In conclusion, Lochinvar 151,286 stands out as a premium choice for commercial water heating needs. With its high-efficiency ratings, durable construction, intelligent control system, impressive capacity, and versatile connectivity, it ensures that hot water is delivered reliably and efficiently, meeting the demands of modern businesses while reducing energy costs. This combination of technology and design makes it an essential component for any large-scale facility focused on performance and sustainability.