Outdoor Knight Boiler Installation & Operation Manual

10 Diagrams

Figure 10-1Ladder Diagram

120VAC

 

 

JUNCTION BOX

 

 

 

 

 

 

NEUTRAL GROUND

 

TERMINAL STRIP

 

 

 

 

 

 

 

 

TERMINAL STRIP

 

120V SUPPLY "L"

 

 

 

 

 

 

 

 

120V SUPPLY "N"

 

 

 

 

 

 

 

 

 

1

 

2

KB ONLY

ON / OFF

 

INTEGRATED CONTROL

 

 

 

GND

 

BLOWER

 

 

 

 

 

 

 

 

 

 

 

SWITCH

 

 

 

 

SYSTEM

 

SYSTEM

 

 

 

 

X1-6

 

F2

 

X1-1

 

 

3

 

 

 

 

 

 

X1-2

PUMP "L"

 

PUMP "N"

 

 

 

 

 

 

3.15A

 

 

 

 

 

 

 

 

 

 

 

F1

 

 

 

SYSTEM

GND

 

 

 

 

 

 

 

 

 

BOILER

PUMP

BOILER

 

 

 

 

 

 

5A

SYSTEM PUMP

 

 

 

 

 

 

 

 

X1-4

PUMP "L"

 

PUMP "N"

 

 

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BOILER PUMP

 

 

BOILER

GND

 

 

 

 

 

 

 

RELAY

 

 

PUMP

 

 

 

 

 

 

 

 

 

 

DHW

DHW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DHW PUMP

X1-3

PUMP "L"

 

PUMP "N"

 

 

 

 

 

 

F3

RELAY

 

 

 

 

 

 

 

 

 

 

 

 

 

TERMINAL

 

TERMINAL

 

 

 

 

 

 

.8A

24V DC

 

STRIP

DHW

STRIP

 

 

 

 

X5-9

 

SUPPLY

X5-1

 

PUMP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

120 VAC

 

 

 

 

 

 

 

 

 

X4-3

3.5A

24 VAC

 

 

 

 

 

 

 

 

 

KB 801

 

CONNECTION BOARD

 

 

 

 

 

 

ONLY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INTEGRATED

 

CN5-5

 

 

LWCO

 

 

 

 

 

 

CONTROL

 

 

 

 

 

 

FLOW

 

CN5-14

X4-8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN7-3

 

 

CN7-4

11

SWITCH

12

CN5-10

X4-12

 

 

 

 

 

 

 

 

 

 

24 VAC

 

 

 

CN7-1

 

CN7-2

 

 

 

 

 

 

 

 

 

HEAT/LOOPDEMAND 1

 

 

CN5-7

X4-1

 

 

 

 

 

 

 

 

 

 

 

19

 

20

 

 

 

 

 

 

 

 

 

HEAT/LOOPDEMAND 2

 

 

CN5-13

X4-9

 

 

 

 

 

 

 

 

 

 

 

17

 

18

 

 

 

 

 

 

 

 

 

HEAT/LOOPDEMAND 3

 

 

CN5-6

X4-2

 

 

 

 

 

 

 

 

 

 

 

15

 

16

 

 

 

 

 

 

 

 

 

TANK

 

 

 

 

 

 

 

 

 

THERMOSTAT

 

 

CN5-12

X4-10

 

 

 

 

 

 

 

 

 

 

 

13

 

14

 

 

 

 

 

 

 

 

 

LOW GAS

HIGH GAS

 

 

 

 

 

 

 

 

 

PRESSURE

PRESSURE

 

 

 

 

 

 

 

 

 

SWITCH

SWITCH

 

 

CN5-11

X4-11

 

 

 

 

 

 

 

 

 

 

 

10

 

9

 

 

CN5-3

X4-5

 

 

 

 

 

INTEGRATED

 

 

 

 

 

 

 

LOUVER

 

 

 

 

 

 

 

 

 

CONTROL

5

 

 

 

 

 

 

 

 

 

RELAY COIL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24VAC

6

 

 

 

 

 

 

 

 

 

LOUVER

7

 

 

 

 

 

 

 

 

 

PROVING SWITCH

CN5-4

X4-4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X7

 

8

 

 

 

 

 

 

 

RIBBON CABLE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KB 286 ONLY

 

 

X5-2

 

 

 

 

 

 

 

 

 

 

 

PC INTERFACE

 

 

 

O-TEMP HEX SW

BLOCKED

 

X5-10

 

 

 

 

 

X5-6

DRAIN SWITCH

 

 

 

 

S2

 

 

 

 

 

 

INLET

 

 

 

 

 

 

ALARM

BELL

1

SENSOR

 

 

 

AIR PRESSURE

 

 

 

 

 

X5-4

 

 

X5-11

 

 

 

OPERATING S1a

 

SWITCH

 

 

 

 

SENSOR

 

 

 

 

 

 

 

 

 

 

HIGH LIMIT

S1b

X5-12

GAS VALVE

 

 

 

 

 

 

 

 

X2-2

 

 

 

SENSOR

 

 

 

 

 

2

6

FLUE SENSOR

S3a

X5-5

X5-13

 

GAS VALVE

X2-1

RELAY

FLUE SENSOR

S3b

X5-14

13

CONNECTION

BOARD

BLOWER

1

X5-7

 

2

X5-16

 

 

 

1

 

CN5-1

 

 

ALARM

 

 

 

CONTACTS

2

 

CN5-8

 

 

 

 

 

 

 

 

 

 

3

 

CN5-2

 

 

RUN-TIME

 

 

 

CONTACTS

4

 

CN5-9

 

 

 

 

 

 

 

SYSTEM

S6

21

 

CN6

 

 

 

 

SENSOR

 

22

 

CN6

 

 

 

 

 

OUTDOOR

S5

23

 

CN6

 

 

 

 

SENSOR

 

24

 

 

 

TANK

S4

26

 

CN6

 

 

 

 

SENSOR

 

27

 

CN6

 

 

 

 

 

 

 

SHIELD

 

29

 

CN6

 

 

A

 

30

 

 

CASCADE

 

 

 

 

B

 

31

 

CN6

 

 

 

 

 

 

SHIELD

 

32

 

CN6

 

 

 

 

 

BMS +

 

33

 

CN6

 

0-10V

 

 

 

IN -

34

 

CN6

 

 

 

 

 

 

CN6

 

SYS PUMP

+

 

35

 

 

0-10V

 

 

 

IN

-

36

 

CN6

 

 

 

 

BLR PUMP

+

 

37

 

CN6

 

0-10V

 

 

 

OUT -

38

 

CN6

 

 

 

 

 

 

 

 

RATE

+

 

39

 

CN6

 

0-10V

 

 

 

OUT

-

40

 

 

 

 

 

 

M

SHIELD

 

41

 

 

 

A

 

42

CN8-1

X6-1

O

 

 

D

MODBUS B

 

43

CN8-2

X6-2

B

SHIELD

 

44

CN8-3

X6-3

U

 

 

 

S

X4-7

X4-14

X4-6

X4-13

X6

X6

X6

X6

X6

X6

X6

X6

X6

X6

X6

X6

X6

X6

X6

X4-1 X9-2

X4-2 X9-1

X4-3 X9-3

4 X5-8

5 X5-15

TR2

X1-7

FLAME ROD

SPARK

ROD

CAUTION HIGH VOLTAGE SPARK LEAD

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.

BOX DEPICTS

OPTIONAL ITEMS

LOW VOLTAGE 120 VAC HIGH VOLTAGE

LADDER DIAGRAM

LBL20148 REV D

54

Page 54
Image 54
Lochinvar 151-286 operation manual Diagrams, PC Interface

151-286 specifications

Lochinvar 151-286 is a high-efficiency water heater designed for both residential and commercial applications. This model stands out due to its advanced technology, user-friendly controls, and robust construction, making it a reliable choice for those seeking to optimize their hot water supply.

One of the key features of the Lochinvar 151-286 is its impressive heating capacity. With a maximum input of 286,000 BTU/hr, it can efficiently meet hot water demands for a variety of settings, including hotels, restaurants, and other commercial facilities. This substantial output ensures that even during peak usage hours, hot water availability is maximized, reducing wait times and enhancing customer satisfaction.

The water heater utilizes a state-of-the-art condensing technology that maximizes efficiency by capturing and utilizing flue gas heat. This process allows the Lochinvar 151-286 to achieve an impressive thermal efficiency rating of up to 98%. The benefit of such high efficiency translates to significant energy savings and reduced operational costs over time, making it an environmentally friendly option as well.

The Lochinvar 151-286 is equipped with a user-friendly control system featuring advanced microprocessor controls. These controls allow for precise temperature management and monitoring, enabling users to set optimal temperatures according to their specific needs. Additionally, the heater includes built-in diagnostics, allowing for easy troubleshooting and maintenance, which minimizes downtime and extends the life of the unit.

Another standout characteristic of the Lochinvar 151-286 is its durable construction. Built with high-quality materials, including a robust stainless steel heat exchanger, this model is designed to withstand the rigors of daily use. The unit also features a compact design, which facilitates easy installation in various locations, whether it be in a utility closet or alongside existing equipment.

Safety features are paramount in the Lochinvar 151-286, with multiple safeguards in place to protect against overheating and other potential issues. The unit is designed to operate reliably, ensuring peace of mind for users who depend on consistent hot water availability.

In summary, the Lochinvar 151-286 water heater combines high capacity, exceptional efficiency, and user-friendly technology, making it an excellent choice for those seeking reliable hot water solutions. Its advanced features deliver performance and durability that stand out in the competitive market of water heating systems.