Service Manual

1Service

Cascade offset

This parameter determines how much the temperature must go above set point before the lead boiler will turn off. This parameter can be adjusted by the installer by accessing parameter H5. The default value is 9.9°F (5°C).

Cascade off-on differential

This parameter determines how much the temperature must go below the turn off temperature (Set point + Offset) before the lead boiler turns on. This parameter can be adjusted by the installer by accessing parameter H6. The default value is 19.8°F (11°C).

I: Circulation pumps

System pump delay

The system pump delay parameter sets the length of time the system pump (if connected) will run after a SH demand has been satisfied. Setting the delay time to 0 will disable the pump. This parameter is adjustable by the installer by accessing parameter I1. The time range for this parameter is 0 minutes to 40 minutes. The default time is 30 seconds.

SH pump delay

The SH pump delay parameter sets the length of time the boiler pump will run after a SH demand has been satisfied. Setting the delay time to 0 will disable the pump. This parameter is adjustable by the installer by accessing parameter I2. The time range for this parameter is 0 minutes to 40 minutes. The default time is 30 seconds.

DHW pump delay

The DHW pump delay parameter sets the length of time the DHW pump (if connected) will run after a DHW demand has been satisfied. Setting the delay time to 0 will disable the pump. This parameter is adjustable by the installer by accessing parameter I3. The time range for this parameter is 0 minutes to 40 minutes. The default time is 30 seconds.

J: Service Notification

Service notification in months

When the boiler control determines that a scheduled service is due based on days of installation, the boiler display will alternate the standard boiler display text with the message SERVICE DUE every 5 seconds. This parameter is adjustable by the installer by accessing parameter J1. The time range for this parameter is 0 months to 36 months. The default time is 12 months.

Service notification running hours

When the boiler control determines that a scheduled service is due based on the hours of actual operation, the boiler display will alternate the standard boiler display text with the message SERVICE DUE every 5 seconds. This parameter is adjustable by the installer by accessing parameter J2. The time range for this parameter is 0 hours to 100,000 hours. The default time is 10,000 hours.

Service notification boiler cycles

When the boiler control determines that a scheduled service is due based on the number of boiler cycles, the boiler display will alternate the standard boiler display text with the message SERVICE DUE every 5 seconds. This parameter is adjustable by the installer by accessing parameter J3. The range for this parameter is 0 cycles to 100,000 cycles. The default is 10,000 cycles.

Reset service notification counter

Once servicing has been completed, the service notification counter should be reset. This parameter can be reset by the installer by accessing parameter J4. Once accessed, press the RESET key to reset the service notification counter.

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Lochinvar 399 - 800 service manual Cascade offset, Circulation pumps, Service Notification

399 - 800 specifications

Lochinvar is known for its cutting-edge water heating and boiler systems, and the Lochinvar 399 - 800 series is no exception. Specifically designed for commercial applications, this series brings advanced technology and engineering to the forefront of hydronic heating solutions.

One of the standout features of the Lochinvar 399 - 800 series is its impressive efficiency. Equipped with a condensing design, these boilers utilize high-efficiency stainless steel heat exchangers that allow for maximum heat transfer while minimizing energy consumption. With an impressive thermal efficiency of up to 96%, the Lochinvar 399 - 800 series stands out in its class, offering significant energy savings and reduced operational costs over time.

Another key characteristic of this series is its robust construction. Designed with longevity in mind, the boilers are built using high-quality materials that withstand extreme temperatures and pressures. The stainless steel design not only enhances durability but also combats corrosion, ensuring a long service life and reduced maintenance costs for users.

The Lochinvar 399 - 800 series also incorporates advanced control technologies. With its intuitive control system, users can easily adjust and monitor heating parameters, ensuring optimal performance and comfort. The integrated Control Wizard feature simplifies the setup process, allowing for quick commissioning and troubleshooting. Additionally, the optional Lochinvar SMART CONTROL technology provides remote monitoring capabilities, allowing operators to keep track of system performance from anywhere.

Versatility is another hallmark of the Lochinvar 399 - 800 series. These boilers come in a range of sizes, with the ability to modulate output based on real-time heating demands. This flexibility ensures that systems can operate efficiently under varying load conditions, making them ideal for schools, hospitals, and commercial buildings requiring consistent hot water availability.

In summary, the Lochinvar 399 - 800 series exemplifies modern boiler technology, combining energy efficiency, durability, advanced controls, and versatility. As businesses and facilities seek to enhance their heating systems, the Lochinvar 399 - 800 offers a reliable and forward-thinking solution for today's energy-conscious environment. Investing in this state-of-the-art boiler system not only improves comfort but also fosters sustainability and cost-effectiveness in commercial heating applications.