Installation & Service Manual

5 Electrical connections (continued)

Diagnostic Status Indication

Figure 5-12_Hot surface ignition control module

The ignition module has an LED which indicates the status of the safety circuits. A remote Ignition Module Status indicating light is wired from the ignition module Status LED and mounted on the front diagnostic panel. The flashing operation of this light indicates the diagnostic status of the ignition control module. The status LED, mounted on the ignition module flashes a code sequence from the Ignition Module to indicate the status of the ignition process. See Table 5D for the flashing diagnostic status codes as signaled by the ignition module.

Ignition and control timings

Proven Pilot Hot Surface Ignition System is standard on all models.

Hot Surface Ignition Module Timings (Nominal)

Prepurge:

15 Seconds

Hot Surface Igniter Heat-up Time:

25- 35 seconds

Main Burner Flame Establishing Period:

4 Seconds

Failure Response Time:

0.8Seconds at less than 0.5 µA flame current Flame Current:

2 - 6 µA

Time Delay Between Stages 1&2:

10 or 120 Seconds (depending on high fire offset settings) Post-purge:

30 Seconds Pump Delay Timing:

30 Seconds after burner shutdown.

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Lochinvar 497 - 2067 service manual Diagnostic Status Indication, Ignition and control timings
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497 - 2067 specifications

Lochinvar 497 - 2067 is a highly efficient and versatile condensing boiler that is designed to meet the diverse heating needs of residential and commercial applications. Known for its impressive performance and advanced technology, the Lochinvar 497 - 2067 has garnered a reputation as a reliable choice among heating professionals.

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The Lochinvar 497 - 2067 is equipped with a robust stainless steel heat exchanger designed to handle high temperatures and ensure long-lasting performance. The heat exchanger’s design maximizes heat transfer, while its corrosion-resistant properties guarantee durability over time. This contributes to the boiler's overall longevity and serviceability, reducing the need for frequent replacements.

Control is another critical feature of the Lochinvar 497 - 2067. The boiler comes with an advanced control system that enables easy management of system operations. Users can take advantage of features such as outdoor reset control, which adjusts the temperature of the boiler based on external weather conditions, enhancing system efficiency and comfort.

In terms of safety, the Lochinvar 497 - 2067 incorporates several cutting-edge safety features, including a flame detection system and multiple safety shut-off devices. These safeguards help to ensure the safe operation of the boiler, providing peace of mind to users and heating professionals alike.

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