Revision Notes: Revision B (ECO #C02407) reflects gas valve adjustment, room air, new sidewall vent termination, piping diagrams, flow switch, relief valve, T & P gauge, Maintenance Section, FIG. 8-1 (Line Voltage), and high altitude changes.

Revision C (ECO #C02545) reflects the addition of references to the safety shutoff testing and instructions, sediment trap, periodic cleaning of screens in vent terminations, removal of B149.2 references, changed the arrow direction on FIG. 6-8, wall thickness for direct vent terminations and sidewall vent termination kit number correction.

Revision D (ECO #C02738) reflects updates made to the line voltage image (FIG. 8-1 on page 43), and edits made to the gas conversion section for the new orifice on the 399 model (page 12).

Revision E (ECO #C03223) reflects edits made to the high altitude section on page 7 and updates made to the condensate trap image on pages 49 and 66.

Revision F (ECO #C03735) reflects, room air, LWCO, pump, hydro and dirt separator changes.

Revision G (ECO #C04433) reflects the addition of the illustrations disclaimer on all the piping drawings (ECR #R02431), changing out “dirt separator” for “Y-Strainer” (ECR #R02455), address Step #5 of the Sequence of Operation, add a description column in Table 3F, and change the direction of the arrows on FIG. 6-8.

Revision H (ECO #C05457) update the vent table to reflect Schedule 80 as acceptable CPVC material (R02799), add stainless steel as acceptable material in a closet or alcove installation (R02900), add flex- smooth wall to the FasNSeal material (ECR #R02845), and update the HEX cleaning procedure to reflect the new HEX cleaning kit (R02634).

KBX-I-O Rev H

4/10

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Lochinvar 399 operation manual KBX-I-O Rev H
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399 specifications

Lochinvar 999 - 750, CF-CH(E)-i&s-08,399 is a cutting-edge boiler designed for commercial heating applications. With its robust construction and high efficiency, this model stands out in the crowded market of heating solutions.

One of the main features of the Lochinvar 999 - 750 is its exceptional thermal efficiency rating. The unit incorporates advanced condensing technology that allows it to recover heat from flue gases, which helps in achieving efficiency levels of up to 99%. This efficiency not only reduces energy consumption but also lowers operational costs, making it an excellent investment for businesses looking to minimize their carbon footprint.

The boiler is designed to provide a powerful output of 750 kW, ensuring it meets the heating demands of larger buildings or commercial spaces. Its capacity makes it suitable for a range of applications including schools, hospitals, and industrial facilities. Moreover, the unit features a built-in cascading system that enables multiple boilers to be connected, enhancing system reliability and flexibility.

In terms of technology, the Lochinvar 999 - 750 is equipped with a user-friendly touchscreen interface. This innovative control system allows operators to monitor and adjust settings with ease, providing real-time performance data and alerts for maintenance needs. The intelligent controls optimize operation to match the heating load, further enhancing energy efficiency.

Safety is a top priority with this model. It is built with multiple safety features such as automatic shut-off valves, pressure relief valves, and flame monitoring systems, ensuring safe operation under various conditions. The unit also adheres to stringent industry standards and regulations, making it a reliable choice for commercial applications.

Furthermore, the Lochinvar 999 - 750 is designed with serviceability in mind. Its compact footprint and accessible components simplify maintenance, reducing downtime and associated costs. The unit also supports a variety of fuel sources, including natural gas, propane, and biodiesel, providing flexibility to meet different facility requirements.

In summary, the Lochinvar 999 - 750, CF-CH(E)-i&s-08,399 represents a blend of efficiency, reliability, and safety in commercial heating. Its advanced technologies and thoughtful design make it a powerful solution for various heating needs, making it an ideal choice for businesses aiming for excellence in energy management and operational efficiency.
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