In the R. L. Deppmann Monday Morning Minute from June 4th we offered some tips on converting an existing over-headed constant speed pumping system to a …
HVAC Centrifugal Pump – Converting Constant Speed To Variable Speed
This week a Michigan engineer contacted me to discuss the conversion of an existing and oversized constant speed secondary chilled water pump to variable speed …
Using ECM Smart Circulator Pumps in Primary Pump Applications in Hydronic Systems
Last week I featured the ECM High-Efficiency Smart Circulator Pump used in a secondary application. This week the R.L. Deppmann Monday Morning Minutes continues to …
Using ECM Smart Pumps in Secondary Hydronic Systems
This week the R.L. Deppmann Monday Morning Minutes continues to look at the application of ECM High-Efficiency Smart Circulator Pumps applied to the secondary loop …
Smart ECM Pump Applications – Variable Speed Heating & Cooling System
ECM (Electronically Commutated Motor) pumps have electronics built into them which may be used to vary the speed of the pump. If the pump manufacturer …
How Can an ECM Smart Pump Save Energy?
Pumps with ECM or Electronically Commutated Motors have the ability to vary the speed of the pump built into the motor. Can you control the …
What are ECM Pumps & ECM Smart Pumps
Last week, I defined ECM motors and how they differ from standard PSC and induction motors. We recently had a customer call who was very …
What is an ECM Pump? – Part 1
ECM pumps and Smart pumps are marketing terms being thrown around to indicate a highly efficient variable speed pump that saves more money than you …
How to Pick a HVAC Centrifugal Pump Part 10: HVAC Pump using a Variable Frequency Drive
The last R L Deppmann Monday Morning Minutes described the recommended limitations when over speeding a HVAC pump with a Variable Frequency Drive (VFD). Today …
Solving Oversized Pumping Problems
Printer Friendly (PDF) The last two weeks we used the Pump Affinity Laws and the ITT Bell and Gossett System Syzer® to either trim the …