Contents

CONTENTS

. 2

2. MAINTENANCE

 

 

Hazard Definitions

. 2

Maintenance and Annual Startup

. . . . . . .

19-23

PLEASE READ BEFORE PROCEEDING

. 3

3. TROUBLESHOOTING

 

 

Handling Ceramic Fiber Materials

. 3

Before Troubleshooting

. . . . . . .

24

When servicing water heater

. 3

Check Control Module Fuses

. . . . . . .

24

Water heater operation

3

Table 3A - Troubleshooting Chart - No Display .

. . . . . . .

25

WHAT IS IN THIS MANUAL

. 4

Checking Temperature Sensors

. . . . . . .

26

1. SERVICE

 

Table 3E - Troubleshooting Chart - Noisy System . . . . . 27

The Armor Water Heater Display

. 5

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

28-35

Control Inputs

. 6

Combustion Analysis Procedure

. . . . . . .

36

Control Outputs

. 7

Table 3G - Flue Products

. . . . . . .

36

General Operation

. 8

Table 3H - Troubleshooting Chart - Combustion Levels .

36

Sequence of Operation

9

Gas Valve Adjustment Procedure

. . . . . . .

37-38

Display Panel Menu Access

10

Revision Notes

Back Cover

Display Panel Parameter Access

11

 

 

 

Parameter Table

12-13

 

 

 

Viewable and Changeable Control Parameters

14-18

 

 

 

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 151 - 801 service manual Contents

151 - 801 specifications

Lochinvar 151 - 801 is a high-efficiency commercial water heater designed to meet the demanding needs of various applications in the hospitality, healthcare, and educational sectors. This advanced system provides reliable hot water with enhanced performance while promoting energy conservation and sustainability.

One of the standout features of the Lochinvar 151 - 801 is its powerful heating capability. With a robust heating input of up to 150,000 BTU per hour, it ensures a steady supply of hot water even during peak demand times. The efficient heat exchanger design optimizes thermal performance, allowing for quicker recovery rates, which is essential for facilities requiring substantial hot water usage.

This model integrates cutting-edge technologies to maximize energy efficiency. Utilized in the Lochinvar 151 - 801 is the Smart System control technology, which provides precise temperature management and diagnostics. This feature not only enhances operation efficiency but simplifies service and maintenance by providing real-time data and alerts, leading to reduced downtime.

Additionally, the Lochinvar 151 - 801 employs a stainless-steel tank construction that promotes durability and robustness. The tank is adequately insulated to minimize heat loss, thus keeping energy costs down. Its compact design also allows for easy installation in various spaces, including those with limited footprints.

Moreover, the unit features advanced combustion technology, including a modulating gas valve that adjusts the flame size according to demand, promoting even greater efficiency. This ensures that the water heater operates at optimum performance levels, reducing fuel consumption while ensuring a consistent supply of hot water.

Safety is a primary concern for Lochinvar, and the 151 - 801 model includes several integrated safety features, such as an ignition safety shutoff and a temperature/pressure relief valve. These systems work together to provide peace of mind while ensuring the unit operates safely within its designated parameters.

In conclusion, the Lochinvar 151 - 801 is an exemplary choice for commercial applications, offering powerful performance, efficient technologies, durable construction, and enhanced safety features. With its combination of high output and advanced monitoring capabilities, it stands as a reliable solution for organizations seeking an effective hot water heating solution.