Articles by Leo A. Meyer

HVACR Tips: Creating a Frame for Return Air Grilles

By Leo A. Meyer
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To establish the openings for return air grilles, you can use a frame made on the job from sheet metal. It forces the wall hangers to cut the return air openings as they install the sheetrock.


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HVACR Tips: Making Terminal Connections

Make Proper Connections to Avoid Problems
By Leo A. Meyer
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Loose electrical connections to motor terminals can cause voltage drop, overheating, and a chance of fire. For three-phase motors, a loose connection can cause single phasing — which will damage the motor.


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HVACR Tips: Ladder Safety

Set Your Ladder at the Proper Angle, Make Sure It Is Secure
By Leo A. Meyer
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Don‘t brush off ladder safety rules because you‘ve used ladders all your life. You may learn a thing or two.


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Furnace Installation Safety

By Leo A. Meyer
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This article deals with your personal safety when installing a new or replacement furnace. Topics covered include emergency procedures; clothing and safety gear; fall protection; electricity; lock out, tag out; GFCI; fuel safety; and confined spaces.


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Green Job Opportunities for You

By Leo A. Meyer
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These conditions were noted in an energy audit report: “The fire/smoke damper was closed.” “The coils are still dirty.” These are not unusual examples. Since 40 percent of the energy used in the United States is used to operate buildings, it is obvious that a big step in making America green is to make our buildings green.
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How a DDC System Operates

By Leo A. Meyer
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Every manufacturer of an HVAC digital control system uses the DDC to perform pretty much the same functions. The catch is that each DDC system has different ways of letting you use these functions. If you are used to operating computers, you have the basic knowledge required.
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Maintaining Control Systems and Identifying Problems

By Leo A. Meyer
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Remember that automatic control systems are automatic in operation, but not self-repairing. Unless a building has a service contract with a reputable controls contractor to inspect and calibrate the HVAC control system every six months, it is very likely that the HVAC system is not providing maximum comfort.
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Basic Principles of Refrigeration

By Leo A. Meyer
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If you are like most in the HVAC industry, you are a hands-on person - you don‘t want to mess with a lot of theory, but just get in and get the job done. But a refrigeration system is different from most of our work.
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Basics of Airflow

By Leo A. Meyer
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If you work in the HVAC industry, you are concerned with the process of conditioning air and moving air from one area to another. It makes sense that you need to know how air flows in ducts and what factors affect the flow.
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Math for the Technician: Using Shapes and Angles

By Leo A. Meyer
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A technician often has to sketch or design ductwork and other parts of an HVAC system. This means working with lines, angles, and other shapes. This article shows you how to draw and work with these different figures.
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John Missell, vice president and COO of Spectrum Design, joins the program to discuss how his company has utilized geothermal technologies, and we examine the future of renewable energy resources. Posted on Aug. 15.

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