Modbus Instructions

7Diagrams

Figure 7-3Wiring Diagram

22

 

LOW VOLTAGE

 

 

 

120 VAC

 

 

X3

HIGH VOLTAGE

 

 

CM 1 PC INTERFACE

 

 

BOX DEPICTS

X5

 

 

OPTIONAL ITEMS

LOUVER

JUNCTION

CONTROL

CONTACTS

BOX

MODULE 1

R1

R2

 

 

PC INTERFACE

 

 

 

 

 

 

 

 

RELAY

 

 

LOUVER

 

 

 

 

X8

 

 

 

 

BOARD

 

 

 

 

 

 

 

 

 

 

 

X1-4

BR

 

 

PR

 

 

HEX 1

 

CONNECTION BOARD

 

 

 

 

 

K1

 

 

 

 

 

 

 

 

 

PR

 

 

BOILER

 

 

 

 

 

 

CM 2 PC

 

 

 

 

 

 

 

 

PUMP

 

CN3

 

 

 

 

 

X1-2

PR

 

 

BR

 

 

 

SHIELD

CN3-16

 

 

 

 

INTERFACE

 

 

 

 

 

 

 

CN4

 

 

 

 

 

 

K2

 

 

SYSTEM

 

CN3-15

 

 

 

 

 

 

 

 

 

BR

 

 

PUMP

CASCADE

 

 

 

 

 

X4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RS485

CN3-14

 

 

 

 

 

 

 

 

 

 

OR

 

 

HEX 2

 

 

 

 

 

 

 

 

 

 

 

 

K3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SYSTEM

 

CN3-13

 

 

 

 

 

 

 

 

 

 

OR

 

 

SHIELD

 

 

 

 

 

 

X1-3

Y

 

 

 

 

 

PUMP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TANK

CN3-12

 

 

 

 

 

 

 

 

 

 

 

 

 

HW PUMP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SENSOR

CN3-11

 

 

 

 

 

 

 

 

 

 

ON/OFF SWITCH

GND

 

RELAY

 

CN3-10

 

 

 

 

 

 

 

BK

 

 

GND

 

 

OUTDOOR

 

 

 

 

 

 

X1-6

 

 

 

L

 

 

 

 

 

 

 

 

 

 

 

 

 

120V SUPPLY

SENSOR

CN3-9

 

 

 

 

 

 

X1-5

W

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

N

 

SYSTEM

CN3-8

 

 

 

 

 

 

 

GR

 

 

GND

 

 

 

 

 

 

 

 

 

 

X1-8

 

 

 

 

 

 

SENSOR

CN3-7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X1-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-

CN3-6

 

 

 

 

4 CONDUCTORS

 

 

 

R W G

 

 

 

EXTERNAL 10VDC

CN3-5

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTROL

 

 

 

 

 

 

 

 

1

2

3

 

 

 

+

 

 

CN1

 

 

 

 

 

 

 

 

 

SHIELD

CN3-4

 

 

 

 

 

 

BLOWER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MOD BUS

CN3-3

 

CN1-10

 

 

 

 

1 2

3 4

5

LOUVER

 

 

 

 

 

 

 

 

 

 

 

 

 

RS485

CN3-2

 

CN1-2

 

MOD BUS

 

 

 

 

 

 

RELAY 1

 

 

 

 

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

KIT

 

 

X5-5

 

 

 

 

 

 

SHIELD

CN3-1

 

 

 

 

 

T

 

 

 

 

 

 

 

CN1-9

 

 

 

 

X5-13

 

 

 

FLAP

 

 

 

 

 

 

 

 

 

 

X5-6

W

 

 

APS

VALVE

 

 

 

 

 

 

 

 

PK

 

X5-12

BK

 

 

 

 

 

 

 

 

 

 

 

 

X6-2

X5-4

OR

 

 

 

 

 

 

 

 

 

 

 

 

BL

X5-10

GY

 

 

 

 

 

 

 

 

 

 

 

 

X6-7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN2-14

 

CN1-11

GY

GY

X6-6

 

 

 

 

AUTO RESET LIMIT

 

 

ENABLE

 

 

 

 

 

 

X5-7

PR

 

 

 

 

 

 

 

CN2-13

 

 

 

 

 

 

X5-14

PR

 

 

 

 

 

 

 

 

 

 

W

W

 

 

 

 

 

 

 

 

TANK

CN2-12

 

CN1-3

 

X6-1

 

 

 

 

HI-LIMIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PK

 

 

X5-3

 

 

 

 

 

 

 

THERMOSTAT

 

 

CN1-4

 

 

 

BK

 

 

 

 

 

 

 

CN2-11

 

 

 

 

 

X5-8

 

 

 

INLET

 

 

MODULE 2

CN2-10

 

CN1-5

 

T

 

 

 

RD

 

 

 

SENSOR

 

 

FLOW

 

CN1-6

 

BR

T

X6-9

X5-1

 

 

 

OUTLET

 

 

SWITCH

CN2-9

 

CN1-13

OR

 

X6-5

X5-2

W

 

 

 

SENSOR

 

 

 

 

 

 

 

 

FLUE

 

 

MODULE 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OR/BK

 

 

Y

 

 

 

 

 

FLOW

CN2-8

 

CN1-14

 

X6-10

X5-9

 

 

 

SENSOR

 

 

SWITCH

CN2-7

 

CN1-12

PK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X6-8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOUVER

CN2-6

 

CN1-15

RD

PR

 

 

BK

 

 

 

 

 

 

PROVING

 

 

 

X3-2

X2-2

 

 

 

 

GAS

 

CN2-5

 

 

 

RD

 

 

 

 

 

 

 

CN1-16

 

 

X2-1

 

 

 

 

 

VALVE

 

 

 

 

 

Y

 

 

 

 

 

 

 

 

RD

 

 

 

 

 

RUNTIME

CN2-4

 

 

 

PR

 

 

 

 

 

 

 

 

 

CN1-8

 

X3-4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTACTS

CN2-3

 

 

 

PR

 

 

 

 

 

 

 

 

 

 

 

 

CN1-7

 

PR

 

 

 

 

 

SPARK

G

 

 

 

 

 

 

 

 

 

 

 

 

ALARM

CN2-2

 

 

 

 

X3-1

 

 

 

 

ROD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTACTS

CN2-1

 

 

 

 

RD

X3-3

 

 

 

 

 

 

 

 

 

 

CN1-1

 

 

 

X1-7

W/RD

 

 

FLAME ROD

 

 

 

CN2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION HIGH VOLTAGE SPARK LEAD

 

 

 

 

BLOCKED

 

 

 

 

 

 

 

DRAIN

 

 

 

 

 

 

 

 

 

 

CONTROL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODULE 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X8

 

PR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X1-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X1-4

BR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X4

X1-3

GY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X1-5

W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOW GAS

 

HIGH GAS

 

 

X1-6

BK

 

 

 

 

 

 

 

PRESSURE SWITCH

 

 

 

 

 

 

 

 

 

PRESSURE 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X1-8

GR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X1-1

RD

R W G

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HIGH GAS

 

 

 

 

1

2

3

 

 

 

 

 

 

 

 

 

BLOWER

 

 

 

 

 

 

PRESSURE 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 2

3 4

5

 

 

 

 

 

 

 

 

 

 

X6-5

 

 

 

 

LOUVER

 

 

 

 

 

 

 

 

 

 

X5-5

RD

 

 

RELAY 2

 

 

 

 

 

 

 

 

 

 

T/BK

 

 

 

 

 

 

 

 

 

 

 

 

T

 

X5-13

 

 

 

 

 

 

 

 

 

 

 

 

X6-9

W

 

 

 

 

 

 

 

 

 

 

 

 

OR/BK

X5-6

 

 

APS

FLAP VALVE

 

 

LOW

 

TEST

 

 

X6-10

BK

 

 

 

 

 

 

 

 

X5-12

 

 

 

 

 

 

J3-1

SWITCH

 

 

 

 

 

 

 

 

 

 

 

WATER

J3-2 OR/BK

BK

PROBE

 

 

X5-4

OR/BK

 

 

 

 

 

 

CUTOFF

J3-3

 

 

 

 

 

 

X5-10

GR/BK

 

 

 

 

 

 

J3-4

 

 

 

 

 

 

 

 

 

 

 

 

BOARD

J3-5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J3-6

 

 

 

 

 

 

 

 

 

 

AUTO RESET LIMIT

 

 

 

BL

 

 

 

 

 

 

 

BL/BK

 

 

 

 

 

 

RESET

 

 

 

 

X5-7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X5-14

PR/BK

 

 

 

 

 

 

 

J2-1

 

OR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J2-2

 

 

 

 

 

 

 

 

 

HI-LIMIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J2-3

 

 

 

 

 

 

 

PK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X5-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BK/RD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X5-8

 

 

 

INLET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RD/BK

 

 

 

SENSOR

 

 

 

 

 

 

 

 

 

 

X5-1

 

 

 

OUTLET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X5-2

W/BK

 

 

 

SENSOR

 

 

 

 

 

 

 

 

 

 

 

 

 

FLUE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X5-9

Y/BK

 

 

 

SENSOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X6-8

 

 

 

 

 

 

 

 

 

 

 

 

 

PR

X3-2

X2-2

BK

 

 

GAS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RD

X3-4

X2-1

Y

 

 

VALVE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PR

X3-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SPARK

 

G

 

 

 

 

 

 

 

 

 

RD

X3-3

 

ROD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X1-7

RD/W

 

 

FLAME ROD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION

HIGH VOLTAGE SPARK LEAD

 

 

 

 

 

 

 

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 voltage spark lead and ribbon cables must be purchased from the factory. Use of a non-approved spark lead

WIRING DIAGRAM

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

LBL20045 REV F

 

diagrams to troubleshoot unit.

Page 22
Image 22
Lochinvar 1.0- 1.3- 1.5 operation manual 3Wiring Diagram

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.

Moving up the scale, the Lochinvar 1.3 model is tailored for slightly larger residential needs and small commercial spaces. This model not only maintains high efficiency with a similar condensing technology but also boasts an expanded capacity. It is equipped with advanced features like an integrated tankless design, which ensures an uninterrupted supply of hot water without the need for a bulky storage tank. Moreover, the Lochinvar 1.3 offers advanced diagnostics, allowing homeowners and technicians to troubleshoot issues quickly and efficiently.

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.