Sparkeysom
Mar 13, 2009, 04:27 AM
What are the difference between primay and secondary pumps ?
hvac1000
Mar 13, 2009, 08:45 AM
This pretty much says it all.
http://www.taylor-engineering.com/downloads/articles/ASHRAE%20Journal%20-%20Primary-only%20vs%20Primary-Secondary%20Variable%20Flow%20Systems-Taylor.pdf
BTW everything today has gone variable speed with ramp ups programed