Most heating and cooling pumps in commercial buildings operate in a variable speed mode. Today, we take your Monday Morning Minutes to explore the variable …
Three-way and Two-way Control Valve Basics in Hydronic Systems
Centrifugal pumps operate at the intersection of the pump curve and the system curve. Last week we developed the system curve for an example closed …
Closed System Curves in HVAC Hydronic Systems
A system curve is a graphical representation of how a heating or cooling system flow rate and system head might change as the load …
What’s On a Pump Curve?
Selecting centrifugal pumps for heating, cooling, process, and plumbing systems is easy once you understand how they work and what you are seeing when …
Centrifugal Pumps: How Do They Work?
How a centrifugal pump moves water may seem too basic for engineers and contractors to spend time reading about. However, understanding how a centrifugal pump …
Happy New Year from R. L. Deppmann
The R. L. Deppmann team wishes you a Happy New Year! We look forward to continuing to serve you in 2024. We will be back …
R. L. Deppmann Wishes You a Happy Holidays
R. L. Deppmann wishes you and yours a Happy Holidays! We wish you all the best this holiday season.
R. L. Deppmann Monday Morning Minutes for 2024
The R. L. Deppmann Monday Morning Minutes blog is entering its fifteenth year of offering tips and training to plumbing and hydronic professionals. To celebrate …
Condensing Boiler Specification – Part 8 – Mobile and Computer Monitoring
In the real world of today, there is little chance of having an employee available to check all the equipment in the boiler room …
Condensing Boiler Specification – Part 7 – O2 Trim Saves Your Client Money
Any person who loves to drive fast classic cars understands the need for proper air-to-fuel mixture or ratio. If you are old enough to remember …