Lochinvar 1.0- 1.3- 1.5 operation manual Contents

Page 2

Contents

1.

INTRODUCTION

 

3.

MEMORY MAP

 

 

 

Definitions

2

 

Primary Data Tables

7

 

Minimum System Requirements

2

 

SYNC Boiler Memory Map

7-8

2.

CONFIGURATION

 

 

Input Registers

8

 

Addressing

3

 

Holding Registers

8

 

Timing Specifications

4

 

Configuration Bits

8

 

Parity

4

4.

WIRING REQUIREMENTS

 

 

 

Data Transmission Mode

4

 

Physical Wiring

9

 

Modbus Board Diagnostics

4

 

Typical Boiler System Wiring

12-13

 

Internal Faults

4

5.

UNIT OPERATION

 

 

 

Modbus Function Set

5

 

Unit Operation with Modbus Communications

14-17

 

Modbus Exception Codes

6

6.

TROUBLESHOOTING

18-19

 

 

 

7.

DIAGRAMS

 

 

 

 

 

 

Ladder Diagram Part 1 & 2

20-21

 

 

 

 

Wiring Diagram

22

 

 

 

Revision Notes

Back Cover

1Introduction

The information contained in this manual provides general guidelines for the implementation of Modbus communication with the Lochinvar SYNC boiler.

All Modbus networks are implemented utilizing a master-slave arrangement where all SYNC boilers are slaves and the master is a building automation system capable of communicating over a RS-485 serial connection.

Definitions

Abbreviation or Acronym

Meaning

 

 

ASCII

American Standard Code for Information Interchange

 

 

BAS

Building Automation System

 

 

Baud (Baud Rate)

Number of data bits transmitted per second (bps)

 

 

EMS

Energy Management System

 

 

FDX

Full-Duplex

 

 

HDX

Half-Duplex

 

 

Hex

Hexadecimal Number (0 - 9, A - F)

 

 

I/O Box

Input/Output (I/O)

 

 

LSB

Least Significant Byte

 

 

Modbus®

A serial, half-duplex data transmission protocol developed by AEG Modicon

 

 

MSB

Most Significant Byte

 

 

RS232

A standard for serial, full-duplex (FDX) transmission of data based on the

RS232 Standard

 

 

 

RS485

A standard for serial transmission of data based on the RS-485 Standard

 

 

RTU

Remote Terminal Unit

 

 

Minimum System Requirements

BAS system or computer with a serial or USB port with a converter to RS-485.

SYNC boiler equipped with Modbus communication board.

Shielded twisted pair communication cable.

2

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Contents Modbus Communication Instructions Sync Models 1.0 1.3Contents Configuration AddressingModbus Board Diagnostics Timing SpecificationsData Transmission Mode ParityModbus Function Set DecModbus Exception Codes NameSync Boiler Memory Map Memory MapPrimary Data Tables Configuration Bits Holding RegistersWiring Requirements Physical WiringSecondary Secondary Smart Touch Control Module Primary Typical Boiler System Wiring 4Control LocationPhysical Configuration Cascade with individual Monitoring Unit Operation with Modbus Communications Demand ConfigurationUnit Operation Hot Water Generation DHW with direct controlMonitoring Only DHW with remote controlCascade Rate Rate and Temperature ConversionsTemperature Deg C Deg F VoltagesTroubleshooting Installation / Replacement Procedure Lockout Codes Input Registers 30016Diagrams LOW Voltage 120 VAC High Voltage2Ladder DiagramPart 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.