Understanding Primary Secondary Pumping Part 6: 5 Ways to Pump an HVAC System

By Chris Edmondson

There’s more than one way to pump a chiller or boiler system.  In fact, there are five common approaches, and all but one includes some variation of our topic of late -- primary secondary pumping. 

Variable Primary Pumping

Contemporary systems that do not utilize primary secondary pumping are typically known as variable primary systems.  In this simple design, there is only one set of pumps (chiller or boiler pumps) creating flow for the entire system. 

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Understanding Primary Secondary Pumping Part 1: Behold the Humble Tee!

Are you involved in the design or installation of hydronic systems?  Do you anticipate becoming involved?

 If you answered yes to either of these questions, this blog series on primary/secondary pumping will interest you.  If you are a hydronic’s veteran, feel free to skip the first few blogs in the series – they may be too much of a review.  Better yet, pass them onto a junior associate and

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