7 Gas connections (continued)

17.Check burner performance by cycling the system while you observe burner response. The burner should ignite promptly. Flame pattern should be stable. Turn system off and allow burner to cool, then cycle burner again to ensure proper ignition and flame characteristics.

Figure 7-6Inlet Gas Supply Check - Models 151 - 286

LOOSEN THE SET SCREW ONE (1) FULL TURN AND

PLACE THE MANOMETER TUBING OVER THE

PRESSURE TAP

DETAIL

Figure 7-7Inlet Gas Supply Check - Model 400

LOOSEN THE SET SCREW ONE (1) FULL TURN AND

PLACE THE MANOMETER TUBING OVER THE

PRESSURE TAP

DETAIL

Installation & Operation Manual

Figure 7-9Inlet Gas Supply Check - Models 601 - 801

REMOVE THE 1/8” (3 MM) PIPE PLUG ON THE INLET FLANGE TO THE VALVE AND INSTALL A SUITABLE 1/8” (3 MM) FITTING (FIELD SUPPLIED) FOR THE MANOMETER TUBING.

DETAIL

Gas pressure

The gas pressure must remain between 4 inches w.c. (natural), 8 inches w.c. (LP) minimum and 14 inches w.c. (natural and LP) maximum during stand-by (static) mode and while in operating (dynamic) mode. If an in-line regulator is used, it must be a minimum of 10 feet from the Armor water heater. It is very important that the gas line is properly purged by the gas supplier or utility company. Failure to properly purge the lines or improper line sizing, will result in ignition failure.

The problem is especially noticeable in NEW LP installations and also in empty tank situations. This can also occur when a utility company shuts off service to an area to provide maintenance to their lines.

Gas valve replacement

The gas valve MUST NOT be replaced with a conventional gas valve under any circumstances. As an additional safety feature, this gas valve has a flanged connection to the venturi and blower.

Figure 7-8Inlet Gas Supply Check - Model 501

LOOSEN THE SET SCREW ONE (1) FULL TURN AND PLACE THE MANOMETER TUBING OVER THE PRESSURE TAP

DETAIL

￿WARNING

￿WARNING

Failure to follow all precautions could result in fire, explosion, or death!

DO NOT adjust or attempt to measure gas valve outlet pressure. The gas valve is factory-set for the correct outlet pressure. This setting is suitable for natural gas and propane, requiring no field adjustment. Attempting to alter or measure the gas valve outlet pressure could result in damage to the valve, causing potential severe personal injury, death, or substantial property damage.

47

Page 47
Image 47
Lochinvar 151 operation manual Gas pressure, Gas valve replacement

151 specifications

Lochinvar 151,286 is a notable model in the realm of commercial water heating solutions, designed primarily for large-scale applications. This model incorporates advanced technologies and features that set it apart in terms of efficiency, usability, and reliability.

One of the hallmark features of Lochinvar 151,286 is its high-efficiency system that leverages condensing technology. This technology enables the unit to extract additional heat from exhaust gases, allowing it to operate at an impressive annual fuel utilization efficiency (AFUE) rating. This not only reduces energy consumption, but it also significantly lowers operational costs.

The Lochinvar 151,286 is equipped with a robust stainless steel heat exchanger, which provides both durability and enhanced thermal efficiency. This design withstands the rigors of high-demand environments, making it ideal for restaurants, schools, hospitals, or any facility requiring consistent hot water supply. Its compact footprint allows it to be installed in tight spaces without sacrificing performance.

Another standout characteristic is its intelligent control system. The built-in touchscreen interface offers users an intuitive way to manage settings, monitor performance, and troubleshoot issues. This smart technology aids in simplifying maintenance and improves overall system reliability. The unit also features advanced safety protocols, including multiple sensors that monitor operation and provide alerts in case of irregular performance.

In terms of capacity, the Lochinvar 151,286 can deliver an impressive output, accommodating varying demands with ease. Its innovative modulation capabilities allow the unit to adjust its heating output based on real-time hot water needs, ensuring unmatched comfort and efficiency.

Supporting the model’s performance are versatile connectivity options. Lochinvar 151,286 can integrate seamlessly with building management systems, allowing facility managers to monitor and control heating processes remotely. This level of connectivity not only enhances control but also supports energy-saving strategies across the facility.

In conclusion, Lochinvar 151,286 stands out as a premium choice for commercial water heating needs. With its high-efficiency ratings, durable construction, intelligent control system, impressive capacity, and versatile connectivity, it ensures that hot water is delivered reliably and efficiently, meeting the demands of modern businesses while reducing energy costs. This combination of technology and design makes it an essential component for any large-scale facility focused on performance and sustainability.