Modbus Instructions

7Diagrams (continued)

Figure 7-2Ladder Diagram_Part 2

 

 

 

 

 

 

 

 

 

 

 

BOX DEPICTS

 

 

 

 

 

 

 

 

 

 

 

 

OPTIONAL ITEMS

 

 

 

 

 

 

 

 

 

 

 

 

LOW VOLTAGE

 

 

 

 

 

 

 

 

 

 

 

120 VAC

 

120VAC

 

 

 

JUNCTION BOX

 

NEUTRAL GROUND

 

 

HIGH VOLTAGE

 

 

 

 

 

 

 

 

 

 

 

 

TERMINAL STRIP

 

 

 

 

TERMINAL STRIP

 

L1

JUNCTION BOX

N / L2

 

120V SUPPLY "L"

 

 

 

 

120V SUPPLY "N"

 

 

 

SYSTEM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PUMP

 

 

 

 

 

 

 

 

 

 

 

 

CONTACTS

 

 

ON / OFF

CONTROL MODULE 1

 

 

 

 

 

 

 

 

 

SWITCH

 

 

 

 

SYSTEM PUMP

 

 

 

 

 

 

 

 

F5

 

 

 

 

 

 

 

 

 

 

 

 

 

X1-2

RELAY

 

 

 

 

 

SYSTEM

 

 

 

 

 

 

 

 

 

HEX 1

 

 

 

 

 

 

 

 

 

 

 

PUMP

 

X1-6

5A

 

SYSTEM PUMP

 

 

 

 

 

 

BOILER

 

 

 

 

 

RELAY

 

 

 

 

 

 

PUMP

 

 

 

 

 

 

 

HEX 1

 

 

 

 

CONTACTS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BOILER PUMP

 

 

 

 

 

 

 

 

 

 

 

X1-4

RELAY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BOILER

 

 

 

 

 

 

 

 

 

 

 

HEX 2

 

 

 

 

BOILER PUMP

 

 

 

 

 

 

PUMP

 

X1-8

 

 

 

 

 

 

 

 

BOILER

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PUMP

 

 

 

 

 

 

 

 

 

JUNCTION BOX

DHW PUMP

 

CONTACTS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

 

X1-3

 

 

 

 

 

 

 

JUNCTION

 

 

 

 

 

 

(FIELD SUPPLIED)

 

LOUVER

 

 

 

 

 

 

 

 

 

 

 

BOILER

 

BOX

 

 

DHW PUMP

 

 

 

 

 

 

CONTACTS

 

 

 

 

 

 

 

 

 

 

 

PUMP

 

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLOWER

 

 

 

 

 

 

 

 

F4

 

 

X1-1

1

2

3

 

 

 

 

 

 

3.5A

BLOWER

 

 

 

 

 

 

DHW

 

 

 

 

 

RELAY

 

3

 

 

 

 

PUMP

DHW

 

 

F3

 

 

 

 

 

 

 

CONTACTS

 

 

1.25A

 

 

 

 

 

 

 

 

(FIELD SUPPLIED)

PUMP

 

 

 

120 VAC

X1-5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X5-7

F2

 

 

X6-8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LWCO

 

 

 

DHW

 

X6-7

3.5A

24 VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

PUMP

 

 

 

J3-2

 

 

 

 

 

X6-2

 

 

 

X6-3

 

 

 

LOW GAS

HIGH GAS

CONTROL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PRESSURE

PRESSURE

MODULE 1

 

 

 

 

 

 

 

 

 

 

SWITCH

SWITCH 1

X6-5

 

ON / OFF

CONTROL MODULE 2

 

 

 

 

 

 

 

 

 

SWITCH

 

 

 

 

 

 

 

 

 

 

CONTROL

 

 

F5

 

 

X1-2

 

 

 

 

 

HIGH GAS

 

 

 

 

 

 

 

 

 

MODULE 2

 

 

 

 

 

 

 

 

 

 

 

PRESSURE

X6-5

 

X1-6

5A

 

SYSTEM PUMP

 

 

 

 

 

 

SWITCH 2

 

 

 

 

 

 

 

 

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HEX 2

 

 

 

 

 

 

 

 

 

 

 

 

BOILER PUMP

 

 

 

 

 

 

 

 

 

 

 

X1-4

RELAY

 

 

 

 

 

 

 

X1-8

 

 

BOILER PUMP

 

 

 

 

 

 

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

JUNCTION

 

 

 

X1-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BOX

 

 

DHW PUMP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

 

F4

 

 

 

BLOWER

 

 

 

 

 

 

 

 

 

 

X1-1

1

2

 

 

 

CONTROL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.5A

 

 

 

 

 

 

 

MODULE 1

 

 

 

BLOWER

 

 

 

 

 

 

 

 

 

 

F3

 

RELAY

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.25A

 

 

 

 

 

 

 

 

 

 

 

 

 

120 VAC

 

 

 

 

 

 

 

 

 

X5-7

F2

 

 

X6-8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X6-10

 

 

 

 

24 VAC

 

 

 

 

 

 

 

 

X6-7

3.5A

 

 

 

 

 

 

X6-9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X6-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X6-1

 

 

 

 

 

 

 

 

 

 

 

 

X6-6

 

 

 

 

 

 

 

 

 

 

 

 

X3-2

 

 

 

 

 

 

 

 

 

 

 

 

X3-4

 

 

 

 

 

 

 

 

 

 

 

 

X3-1

 

 

 

 

 

 

 

 

 

 

 

 

X3-3

 

 

CONNECTION

 

 

CONNECTION

 

 

 

 

 

 

 

BOARD

 

 

 

 

 

 

 

 

 

 

 

 

 

BOARD

 

 

 

 

 

 

 

CN1-4

5

 

 

 

6

CN1-6

 

 

 

 

CONTROL

 

 

 

 

 

 

 

 

 

 

 

 

MODULE 2

 

CN1-12

 

LOUVER

 

 

 

 

 

 

 

 

 

 

 

PROVING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN1-13

9

 

 

 

10

CN1-5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HEX 1

 

 

 

 

 

 

 

 

 

 

 

 

FLOW

 

 

 

 

 

 

 

 

 

 

 

7

SWITCH

 

 

8

CN1-6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X6-10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HEX 2

 

 

 

 

 

 

 

 

X6-9

 

 

 

FLOW SWITCH

 

 

 

 

 

 

 

 

 

11

 

12

 

 

 

 

 

 

 

 

 

 

 

CN1-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HW

 

 

 

 

 

 

 

 

 

 

 

 

THERMOSTAT

 

 

 

 

 

 

 

 

 

 

13

 

 

 

14

CN1-11

 

 

 

 

X3-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ENABLE

 

 

 

 

 

 

 

 

X3-4

 

 

 

 

 

 

4

 

 

 

 

 

X3-1

 

 

 

 

 

 

CN1-15

 

 

 

 

X3-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RUN TIME

 

 

 

 

 

 

 

 

 

 

 

CONTACTS

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTES:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN1-10

 

1. Where possible, switches are shown without utilities (gas, water or

 

 

 

 

 

 

 

 

electricity) connected to the unit. As such, actual switch states may

 

LWCO

 

 

 

1

CN1-7

 

vary from those shown on diagrams depending upon whether utilities

J3-5

 

 

 

 

 

 

are connected or a fault condition is present.

 

J3-4

 

 

 

 

 

 

 

J3-6

 

ALARM

 

 

 

 

 

2. See wiring diagram for additional notes.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTACTS

 

2

 

 

 

 

 

 

 

 

J3-3

 

 

 

CN1-8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TEST SWITCH

 

 

 

 

 

 

 

 

 

 

 

PROBE

 

 

 

 

 

 

 

 

 

LADDER DIAGRAM

 

 

 

 

 

 

 

 

 

LBL20046 REV D

 

 

 

 

 

 

 

 

 

 

 

21

Page 21
Image 21
Lochinvar 1.0- 1.3- 1.5 operation manual 2Ladder DiagramPart

1.0- 1.3- 1.5 specifications

Lochinvar has long been recognized as a leader in the water heating industry, offering high-efficiency solutions for residential and commercial applications. Among its celebrated products are the Lochinvar 1.0, 1.3, and 1.5 models, which represent a range of advanced technologies and features designed to meet diverse customer needs.

The Lochinvar 1.0 is crafted for residential applications, featuring a robust design that emphasizes energy efficiency and reliability. This model incorporates condensing technology, ensuring that water heating is optimized, resulting in reduced energy costs. With a thermal efficiency rating of up to 95%, the Lochinvar 1.0 significantly lowers fuel consumption while providing ample hot water for households. This model also includes a digital control system that offers precise temperature management, enhancing user convenience.

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The Lochinvar 1.5 model ramps up the capability even further, catering to larger commercial applications or extensive residential requirements. It offers exceptional performance with an increased output and efficiency, ensuring that even in high-demand scenarios, users are not left wanting for hot water. With an impressive thermal efficiency rating exceeding 96%, this model is engineered to meet stringent energy regulations while providing reliable performance.

All three models feature durable components including stainless steel heat exchangers, enhancing longevity and resistance to corrosion. They also integrate user-friendly interfaces, making them accessible for easy adjustments and monitoring. Additionally, all Lochinvar models are designed with environmental responsibility in mind, contributing to reduced greenhouse gas emissions.

In summary, Lochinvar's 1.0, 1.3, and 1.5 models showcase a commitment to innovation in water heating technology. They offer a blend of efficiency, capacity, and user-friendly features suitable for various applications, making them a wise choice for those in search of reliable hot water solutions.