Contents

CONTENTS

2

2. MAINTENANCE

 

 

Hazard Definitions

2

Maintenance and Annual Startup

28-32

PLEASE READ BEFORE PROCEEDING

3

3. TROUBLESHOOTING

 

 

Handling Ceramic Fiber Materials

3

Before Troubleshooting

33

When servicing boiler

4

Check Control Module Fuses

33

Boiler operation

4

Table 3-1 - Troubleshooting Chart - No Display

34

Boiler water

4

Checking Temperature Sensors

35

Freeze protection fluids

4

Table 3-3 - Troubleshooting Chart - Noisy System

36

WHAT IS IN THIS MANUAL

5

Table 3-4 - Troubleshooting Chart - Fault Messages . 37-46

1. SERVICE

 

Combustion Analysis Procedure

46

Near Boiler Piping

6

Table 3-5 - Flue Products

46

The Knight XL Display

7

Table 3-6 - Troubleshooting Chart - Combustion Levels

46

Control Inputs

8

Gas Valve Adjustment Procedure

47

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

15-18

 

 

 

Viewable and Changeable Control Parameters

19-27

 

 

 

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 801, 400 service manual Contents

400, 801 specifications

The Lochinvar 801,400 is a cutting-edge solution in the realm of high-efficiency commercial water heating. This model represents a significant advancement in the design and functionality of water heaters, catering primarily to the demands of large-scale facilities like hotels, hospitals, and large industrial operations.

One of the standout features of the Lochinvar 801,400 is its impressive heating capacity, which can produce up to 801,400 BTUs, making it suitable for high-demand applications. This output is crucial for establishments that require a consistent supply of hot water, such as commercial kitchens and laundry facilities. The robust design ensures that it can handle peak demand periods without compromising performance.

Another significant aspect is the innovative use of advanced technology in its operation. The Lochinvar 801,400 integrates smart controls that enhance its efficiency and ease of operation. These controls allow for precise monitoring and adjustment of water temperatures, ensuring that the system operates within optimal parameters while maximizing energy savings. The intelligent monitoring system can provide real-time updates, making it easier for facility managers to keep track of performance and address maintenance needs proactively.

The construction of the Lochinvar 801,400 incorporates durable materials that not only enhance the longevity of the unit but also offer resistance to corrosion and wear. This durability translates into lower maintenance costs and an extended lifespan for the unit, making it a worthwhile investment for businesses.

Moreover, the Lochinvar 801,400 is designed with energy efficiency in mind. It boasts a high thermal efficiency rating, which reduces operational costs and minimizes the carbon footprint of heating operations. This efficiency is critical in today’s environmentally conscious market, where businesses are seeking to reduce their energy consumption and comply with strict regulations.

The design of the Lochinvar 801,400 also prioritizes safety, featuring innovative safety controls and fail-safes that protect both the unit and the users.

In summary, the Lochinvar 801,400 offers a combination of high capacity, advanced technology, durability, and energy efficiency, making it an excellent choice for commercial water heating solutions. As industries continue to evolve, the demand for reliable and efficient water heating solutions like the Lochinvar 801,400 will only increase.