Eric Johnson explains how natural-gas pressure affects boiler burner sizing, input, turndown, and combustion control. His central commissioning rule is simple: set regulated gas pressure at high fire to achieve the rated input, then use the air damper or gas butterfly valve for combustion adjustments elsewhere in the firing range.

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Eric Johnson makes the case for broader use of automatic bottom blowdown systems in U.S. boiler rooms. He weighs code and safety considerations, comparisons with international practice, and practical design ideas, while arguing that engineering controls can reduce dependence on customers remembering manual tasks.

Eric Johnson discusses the realities of the boiler industry, career prospects, industry challenges, and how to attract new talent. He shares personal stories, industry insights, and thoughts on improving industry perception.

Eric Johnson breaks down the complex topic of burner linkage adjustment, making it accessible for service technicians and boiler industry professionals. He shares five core concepts that simplify understanding how to adjust linkage systems effectively.

5 Building Blocks to Understanding Burner Linkage Adjustment

1. On the driver crank arm, moving the rod connection farther from the shaft increases connecting rod travel distance.
2. On the receiver crank arm, moving the rod connection farther from the shaft decreases the arm’s rotational travel distance.
3. Adjusting the connecting rod length moves the receiver crank arm's starting position without changing its rotational travel distance.
4. When both crank arms are parallel and connected at equal distances from their shafts, the receiver crank arm matches the driver crank arm's speed and travel throughout the entire stroke.
5. When crank arms are set at different angles, an arm rotates fastest at 90 degrees to the connecting rod and slows down as the angle flattens.

This episode explores the science of human learning and how it applies to training in the boiler industry. Eric Johnson shares insights on effective teaching methods, Bloom's taxonomy, and the importance of practical application for mastering complex skills.

Eric Johnson explains the purpose and functions of triple duty valves in hydronic systems, emphasizing their importance in pump operation, system efficiency, and maintenance.

Eric Johnson talked with Izzy Friedman who shares the fascinating history and modern innovations of boiler and building management systems, emphasizing energy efficiency, remote monitoring, and the future of heating technology in older buildings. Izzy Friedman shares his passion and expertise in steam systems, boiler maintenance, and energy efficiency. This episode covers practical advice, industry insights, and the future of boiler technology, making it essential for building owners, contractors, and enthusiasts.

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Eric Johnson explores the complexities of boiler efficiency, the importance of proper system design, and the misconceptions around high efficiency boilers. He emphasizes the need for understanding total lifecycle costs and working with knowledgeable professionals to make informed decisions.

If you are looking for more training around boiler systems, go to www.boilearn.com