Lochinvar 1.0- 1.3- 1.5 operation manual Hot Water Generation, DHW with direct control

Page 15

Modbus Instructions

5Unit Operation (continued)

Demand Configuration 5

In this configuration the unit is controlled by providing an enable signal and a rate command through Modbus communications.

The rate command will be 0 - 100% of modulation.

All sensors and limiting devices should be hardwired to the terminal strip on the back of the unit excluding the thermostat enable and tank thermostat enable signal. These signals will be sent to the unit via Modbus.

The holding registers will need to be set as follows:

Holding Registers

Definition

Bit Value (HEX)

Action

 

 

 

 

40001

Configuration

00 05

Set Configuration to read 40002 & 3

 

 

 

 

40002

Coils

00 01

Enables unit (00 00 disables unit)

 

 

 

 

40003

Rate Command

00 ##

Sets Modulation % or Setpoint

 

 

 

 

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.

Demand Configuration 6

In this configuration the unit is controlled by setting the modulation setpoint from 0 - 100%.

Rate command will be 0 - 100% of the modulation range.

All sensors and limiting devices should be hardwired to the terminal strip on the back of the unit excluding the 0 - 10Vdc signal. This signal will be sent to the unit via Modbus.

The holding registers will need to be set as follows:

Holding Registers

Definition

Bit Value (HEX)

Action

 

 

 

 

40001

Configuration

00 04

Set Configuration to read 40003

 

 

 

 

40003

Rate Command

00 00

Sets Modulation %

 

 

 

 

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.

Hot Water Generation

Hot water generation can be accomplished with one of two methods when a SYNC boiler is connected to a BAS system, DHW with direct control, and DHW with remote control.

DHW with direct control:

This is the typical installation with a hot water generator in close proximity to the boiler with the tank thermostat, or tank temperature sensor, wired to the terminal strip of the unit.

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Contents Sync Models 1.0 1.3 Modbus Communication InstructionsContents Addressing ConfigurationParity Timing SpecificationsData Transmission Mode Modbus Board DiagnosticsDec Modbus Function SetName Modbus Exception CodesMemory Map Primary Data TablesSync Boiler Memory Map Holding Registers Configuration BitsPhysical Wiring Wiring RequirementsSecondary Secondary Smart Touch Control Module Primary 4Control Location Typical Boiler System WiringPhysical Configuration Cascade with individual Monitoring Demand Configuration Unit OperationUnit Operation with Modbus Communications DHW with direct control Hot Water GenerationDHW with remote control CascadeMonitoring Only Deg C Deg F Voltages Rate and Temperature ConversionsTemperature RateTroubleshooting Lockout Codes Input Registers 30016 Installation / Replacement ProcedureLOW Voltage 120 VAC High Voltage Diagrams2Ladder 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.
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