Lochinvar 1.0- 1.3- 1.5 operation manual Cascade, DHW with remote control, Monitoring Only

Page 16

Modbus Instructions

5Unit Operation

DHW with remote control:

This installation may or may not have the hot water generator in close proximity to the boiler. Its sensors and thermostat values are only available through the Modbus communication bus.

To ensure that the SYNC boiler can properly respond to a call for hot water generation the following holding registers must be set in addition to other commands:

Holding Registers

Definition

Bit Value (HEX)

Action

 

 

 

 

40001

Configuration

00 4A

Set Configuration to read 40002, 4 & 5

 

 

 

 

40002

Coils

00 08

Enables Tank Tstat (00 00 disables unit)

 

 

 

 

40004

Tank Setpoint

0# ##

Sets Setpoint

 

 

 

 

40005

Tank Temperature

0# ##

Passes tank temp from remote sensor

 

 

 

 

NOTE: To ensure proper operation re-send the configuration bits to holding register 40001 prior to issuing a command.

For proper hexadecimal conversion of rate percentage, please refer to the Rate and Temperature Conversion section on page 17 of this manual.

Cascade

In order to operate the SYNC boiler in Cascade with Modbus communications, configure the leader boiler per the demand configurations in this manual. Connect the remaining boilers in the cascade through the normal cascade communications wiring. Cascade control can then be accomplished automatically through the leader boiler.

Please note that with Modbus communication connected to only the leader boiler, total Cascade information can be seen through the communications link. If you wish to see all the individual temperatures of each unit in the Cascade, each unit will have to have a Modbus communication board. However, each unit can be monitored without the need to control each one individually.

Monitoring Only

Any SYNC boiler can be equipped with the Modbus communication board and then be set up to operate with its own internal controls. If necessary, Modbus can be configured as a monitoring device by selecting demand configurations 1 - 3, and polling the Modbus board for the read only variables.

16

Page 15 Page 17
Image 16
Page 15 Page 17
Contents Modbus Communication Instructions Sync Models 1.0 1.3Contents Configuration AddressingTiming Specifications Data Transmission ModeModbus Board Diagnostics ParityModbus Function Set DecModbus Exception Codes NamePrimary Data Tables Memory MapSync Boiler Memory Map 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 Demand ConfigurationUnit Operation with Modbus Communications Hot Water Generation DHW with direct controlCascade DHW with remote controlMonitoring Only Rate and Temperature Conversions TemperatureRate 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.
Top Page Image Contents