Lochinvar 1.0- 1.3- 1.5 operation manual Wiring Requirements, Physical Wiring

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Modbus Instructions

4Wiring Requirements

Note that when the System Supply Temperature and/or the Tank Temperature are provided by the BAS, they need to be refreshed every few seconds. This is required in order to prevent unwanted fluctuations in these temperatures. If these values are not provided every few seconds (timeout is programmable), the boiler will revert to its own internal control. If neither of these temperatures is provided by the BAS, but any of the other control signals are being provided, the BAS will still need to refresh these inputs at least every 4 minutes.

Physical Wiring

RS-485 Communication Bus

Maximum Length = 4000 feet

Cable Specification = 24 AWG / A,B (twisted pair) and GND Shielded, with characteristic Impedance = 120 ohm

Maximum Load = 32 units (32 nodes)

NOTE: Cable must be terminated with 120 ohm impedance matching resistor on each end.

Figure 4-1_Terminal Strip Connections

 

 

 

 

 

 

 

 

 

 

 

 

8 FLOW SWITCH

 

10 FLOW SWITCH

 

12 THERMOSTAT

 

 

LBL20052 REV B

 

MOD BUS

0 - 10VINPUT

 

 

 

 

 

 

 

CASCADE

 

 

COMMUNICATIONBUS

 

 

 

 

 

 

 

 

1 ALARM

2 CONTACTS

3 RUN TIME

4 CONTACTS

5 LOUVER

6 PROVING

7 HEX 2

9 HEX 1

11 TANK

ENABLE

 

15 SHIELD GND

 

17 B 18 SHIELD GND

21 SYSTEM

22 SENSOR

23 OUT DOOR

24 SENSOR

25 TANK

26 SENSOR

27 SHIELD GND

 

 

30 SHIELD GND

 

 

 

 

 

 

 

 

 

13 R

14 W

16 A

19 (+)

20 (-)

28 B

29 A

 

BOILER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHIELD

MODBUS

A B TO NEXT

SHIELD

TO NEXT BOILER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A B

 

 

 

SHIELD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHIELD

PREVIOUS BOILER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FROM

BUILDING

MANAGEMENT

SYSTEM

LOUVER

PROVING

SWITCH

 

HEAT

EXCHANGER 2

FLOW SWITCH

 

 

 

HEAT

EXCHANGER 1

FLOW SWITCH

 

TANK

THERMOSTAT

 

 

 

 

 

ENABLING DEVICE

 

 

 

SYSTEM SENSOR

 

 

 

OUTDOOR SENSOR

 

 

TANK SENSOR

 

 

 

9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Image 9
Contents Sync Models 1.0 1.3 Modbus Communication InstructionsContents Addressing ConfigurationData Transmission Mode Timing SpecificationsModbus Board Diagnostics ParityDec 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 Temperature Rate and Temperature ConversionsRate Deg C Deg F VoltagesTroubleshooting 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.