Hydronic and plumbing system pump service is one of the most popular seminars R. L. Deppmann offers for contractors and owners. Questions in these seminars …
B&G Systemwize: Overspeeding of Variable Speed Pumps
The term “overspeeding” in pump selection and operation is a topic of conversation in the world of hydronic design. When asked about this subject I …
Basic Centrifugal Pump Selection: Which Pump Do I Choose? (Part 2 of 2)
When looking at pumps, the one question every HVAC and Plumbing engineer will ponder is “which pump do I choose?” There are several factors that …
Basic Centrifugal Pump Selection: Which Pump Do I Choose? (Part 1 of 2)
When looking at pumps, the one question every HVAC and Plumbing engineer will ponder is “which pump do I choose?” There are several factors that …
Variable Speed Pump Control: Wheels and Ladders and Diversity
Commercial and industrial hydronic heating and cooling systems will usually have variable speed distribution pumps. There are multiple ways to identify what speed the pumps …
Variable Speed Systems: Types of Sensors (Part 2)
Last week, in part one of this series, we looked at temperature, pressure, and differential pressure sensors to control the speed of a HVAC or …
Variable Speed Systems: Types of Sensors (Part 1)
The variable frequency drive can vary the speed of the centrifugal pump from zero to speeds over the nameplate of the motor. Of course, the …
Control Head: Quiz Answers and a Thought on Variable Speed Pump Selection
In the last R. L. Deppmann Monday Morning Minutes (MMM), What is Control Head in Hydronic Variable Speed Pumping?, we mentioned a quiz and asked …