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.