Contents

CONTENTS

. 2

2. MAINTENANCE

 

 

Hazard Definitions

. 2

Maintenance and Annual Startup

. . . . . . .

23-27

PLEASE READ BEFORE PROCEEDING

. 3

3. TROUBLESHOOTING

 

 

Handling Ceramic Fiber Materials

. 3

Before Troubleshooting

. . . . . . .

28

When servicing boiler

. 4

Check Control Module Fuses

. . . . . . .

28

Boiler operation

4

Table 3A - Troubleshooting Chart - No Display .

. . . . . . .

29

Boiler water

. 4

Checking Temperature Sensors

. . . . . . .

30

Freeze protection fluids

. 4

Table 3E - Troubleshooting Chart - Noisy System . . . . . 31

WHAT IS IN THIS MANUAL

. 5

Table 3F - Troubleshooting Chart - Fault Messages . . . .

32-39

1. SERVICE

 

Combustion Analysis Procedure

. . . . . . .

40

Near Boiler Piping

. 6

Table 3G - Troubleshooting Chart - Combustion Levels

40

The Knight Wall Mount Display

. 7

Table 3H - Flue Products

. . . . . . .

40

Control Inputs

. 8

Gas Valve Adjustment Procedure

. . . . . . .

41

Control Outputs

. 9

Revision Notes

Back Cover

General Operation

10

 

 

 

Sequence of Operation

11-12

 

 

 

Display Panel Menu Access

13

 

 

 

Display Panel Parameter Access

14

 

 

 

Parameter Table

15-16

 

 

 

Viewable and Changeable Control Parameters

17-22

 

 

 

Hazard definitions

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product.

￿DANGER

￿WARNING

￿CAUTION

CAUTION

NOTICE

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.

NOTICE indicates special instructions on installation, operation, or maintenance that are important but not related to personal injury or property damage.

2

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Lochinvar 50-210 service manual Contents

50-210 specifications

The Lochinvar 50-210 is a powerful and efficient boiler designed for residential and commercial heating applications. This model is a part of Lochinvar’s line of advanced heating solutions, known for their reliability, efficiency, and innovative technologies. The 50-210 offers a high thermal efficiency rating, ensuring that energy consumption is minimized while still providing excellent heating performance.

One of the standout features of the Lochinvar 50-210 boiler is its advanced control system. It is equipped with a user-friendly LCD display that allows easy access to system settings and real-time performance data. This technology enhances user experience, allowing for easy adjustments and monitoring, ensuring optimal performance based on specific heating needs.

The Lochinvar 50-210 is designed with a fully modulating burner, which means it can adjust its output to match the heating demand effectively. This feature not only provides superior comfort but also increases energy savings by preventing the boiler from running at full capacity when it's not necessary. Moreover, the modulating burner minimizes wear and tear, extending the lifespan of the unit.

In terms of safety, the Lochinvar 50-210 incorporates several features such as multiple temperature and pressure sensors, flame safeguard systems, and safety cut-off controls. These safeguard mechanisms ensure that the system operates safely and efficiently, providing peace of mind to users.

The construction of the Lochinvar 50-210 is robust, featuring high-grade stainless steel and a durable heat exchanger. This design helps resist corrosion, ensuring longevity and requiring minimal maintenance over the years. Additionally, its compact design allows for easier installation, making it suitable for various settings, even those with limited space.

Furthermore, the Lochinvar 50-210 operates quietly, which adds to its appeal for residential installations. Its environmental considerations are also noteworthy, with low emissions contributing to cleaner air quality.

Overall, the Lochinvar 50-210 is a sophisticated heating solution that blends efficiency, reliability, and advanced technology. With its user-friendly controls, modulating burner, safety features, and durable construction, it meets the heating demands of modern homes and commercial spaces, making it a top choice for those seeking dependable boiler performance.