Lochinvar 81 - 286 operation manual 2Wiring Diagram

Models: 81 - 286

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Installation & Operation Manual

13 Diagrams

Figure 13-2Wiring Diagram

ALARM BELL

BELL JUMPER

SILENCING SWITCH

 

 

 

 

 

LOW VOLTAGE

BOX DEPICTS

 

 

 

 

 

 

 

120 VAC

 

 

 

 

 

 

 

 

 

OPTIONAL ITEMS

 

 

 

 

 

 

 

 

HIGH VOLTAGE

 

BOX DEPICTS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DUAL SENSOR

 

 

 

 

 

 

 

 

 

 

SINGLE HOUSING

 

 

 

 

 

 

 

CONNECTION BOARD

 

INTEGRATED

 

 

 

BOX DEPICTS

 

 

 

 

CONTROL

 

JUNCTION

 

 

 

 

 

 

 

 

OPTIONAL

 

 

 

 

 

 

 

 

BOX

 

 

ITEMS

ALARM

1

 

 

X-7

X1-3

OR

L

 

 

 

CONTACTS

2

 

 

G

 

DHW

 

 

 

 

 

 

 

RUN-TIME

3

 

 

 

 

 

N

 

PUMP

 

 

 

 

W

 

 

CONTACTS

4

 

 

 

 

 

 

 

 

 

 

X1-4

BR

L

 

 

 

24 VAC LOUVER

5

 

 

 

G

 

BOILER

 

 

 

 

 

 

 

RELAY COIL

6

 

 

 

 

W

N

 

 

PUMP

LOUVER

7

 

 

 

 

 

 

 

CN5-1

BK

X4-7

X1-2

PR

L

 

 

 

PROVING SWITCH

8

G

 

SYSTEM

CN5-8

BK

X4-14

 

 

 

 

GAS PRESSURE

9

 

W

N

 

 

PUMP

CN5-2

BK

X4-6

 

 

 

 

SWITCH

10

 

 

 

 

CN5-9

BK

X4-13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN5-3

BK

X4-5

 

KB ONLY

 

 

 

 

 

 

 

CN5-10

BK

X4-12

 

ON/OFF

 

 

 

 

 

 

 

CN5-11

BK

X4-11

 

SWITCH

 

 

L

120V

 

 

 

CN5-4

BK

X4-4

X1-6

BK

L

 

FLOW

11

CN5-5

BK

X4-3

X1-5

W

N

GND

SUPPLY

 

N

SWITCH

12

CN5-14

BK

X4-8

 

 

 

 

 

 

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

X1-1

 

 

 

 

 

HEAT/LOOP

2

17

 

 

 

R

 

 

 

 

DEMAND

18

 

 

 

 

 

 

 

 

 

HEAT/LOOP

3

19

 

 

 

 

 

TRANSFORMER

 

 

DEMAND

20

 

 

 

 

 

 

 

 

 

SYSTEM

 

 

21

 

 

R W G

 

SENSOR

 

 

22

 

 

1 2 3

 

OUTDOOR

 

 

23

 

 

 

 

 

 

 

 

 

SENSOR

 

 

24

 

 

 

 

 

 

 

25

 

 

BLOWER

 

TANK

 

 

26

 

 

 

SENSOR

 

 

27

 

 

 

 

 

 

 

28

 

 

1 2 3 4 5

 

SHIELD

 

 

29

 

 

 

 

 

 

 

 

 

A

 

 

30

 

 

 

 

CASCADE

 

 

31

 

 

 

 

B

 

 

 

 

 

 

SHIELD

 

 

32

 

 

 

 

 

 

 

CN6

X5-7

R

 

 

 

 

 

X6

T

 

 

 

 

 

 

X5-16

 

 

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

 

KB 286 ONLY

RATE

+

0-10V

39

 

 

 

P BLOCKED DRAIN SWITCH

O-TEMP HEX SW

OUT

-

40

X5-10

 

SHIELD

 

41

X5-11

 

AIR PRESSURE SWITCH

 

MODBUS

A

 

42

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

CUT-OFF

COM

CN7-2

CN8-1 CN8-2 CN8-3

INLET SENSOR S2

CN7-4

X5-5

W/BK

FLUE SENSOR S3a

WATER

 

CN7-3

 

 

 

-T

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

@24VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Y

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X4-2

 

 

 

 

 

X9-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODBUS BOARD

 

 

 

 

X4-3

 

 

 

 

G

 

 

 

X9-3

 

X1-7

 

W/R

 

 

FLAME SENSOR

G

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X4-4

 

 

 

 

 

 

 

 

 

 

X9-4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MTR-01

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TR2

 

 

 

 

 

 

 

 

 

SPARK

 

 

 

 

 

 

 

 

 

 

 

SHIELD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ROD

 

 

 

 

 

 

 

 

 

 

 

GROUNDING

 

 

 

 

 

 

 

 

 

X5-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X5-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION

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.

LBL20127 REV C

78

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Image 78
Lochinvar 81 - 286 operation manual 2Wiring Diagram

81 - 286 specifications

Lochinvar 81 - 286 is a state-of-the-art boiler recognized for its efficiency and reliability in both residential and commercial applications. This high-performance heating solution is designed to meet the diverse needs of users while adhering to modern environmental standards.

One of the standout features of the Lochinvar 81 - 286 is its advanced condensing technology. This allows the unit to harness more heat from the combustion gases, significantly boosting its thermal efficiency. With an impressive efficiency rating of over 95%, users can expect lower energy bills and reduced carbon emissions, making this boiler an environmentally friendly choice.

The Lochinvar 81 - 286 incorporates a robust stainless steel heat exchanger that guarantees durability and longevity. This corrosion-resistant material not only prolongs the unit's life but also ensures consistent performance over time. Additionally, the heat exchanger’s design facilitates optimal heat transfer, further enhancing the boiler's efficiency.

In terms of control, the Lochinvar 81 - 286 features a user-friendly control interface that simplifies operation. The boiler is equipped with advanced modulation capabilities, allowing it to adjust its output based on real-time heating demands. This responsiveness reduces energy waste and optimizes comfort levels within the space it serves.

The boiler also supports a variety of installation configurations, providing flexibility for different building layouts. Its compact design allows for easy installation in restricted spaces, while versatile venting options facilitate integration into various systems.

Safety is a paramount consideration in the design of the Lochinvar 81 - 286. The unit comes with integrated safety features such as a built-in diagnostic system that alerts users to any potential issues before they escalate. This proactive technology helps in maintaining seamless operation and reducing downtime.

Finally, the Lochinvar 81 - 286 is compliant with the latest regulations and industry standards, ensuring that it meets the expectations of both consumers and environmental agencies. With its impressive combination of efficiency, durability, and advanced technology, the Lochinvar 81 - 286 stands out as a top choice for anyone seeking a high-performance heating solution. This boiler not only addresses the immediate needs of heating but also supports long-term sustainability initiatives, proving to be a wise investment for the future.